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bodyBgs[3] = "/images/banner/s4.jpg"; bodyBgs[4] = "/images/banner/s5.jpg"; var randomBgIndex = Math.round( Math.random() * 4 ); //输出随机的背景图 document.write('<style>.banner{background:url(' + bodyBgs[randomBgIndex] + ') no-repeat 50% bottom}</style>'); //]]> </script> <section> <div class="banner" style="height:160px;"> </div> </section> <!-- 面包屑导航开始 --> <div class="container "> <nav class="sub_menu"> <ol class="breadcrumb"><span class="glyphicon glyphicon-list"></span> <li><a href="/">网站首页</a></li> <li><a title="技术文章" href="/bethel/NC">技术文章</a></li> <li><a title="数控文章" href="/bethel/news">数控文章</a></li> </ol> </nav> </div> <!--/sub_menu--><!-- 面包屑导航结束 --> <!-- 页面标题开始 --> <div class="title"> <h3><a>MDH80加工中心故障数据初步分析<small></small></a></h3> </div> <!-- 页面标题结束 --> <hr class="featurette-divider"> <!-- 中部开始 --> <div class="container"> <!-- 正文 --> <div class="lead" id="print"> <p> 2.3故障数据初步分析<br /> 故障数据初步分析可以为后续的可靠性研究提供必要的数据支撑。同时它还可以帮 助管理人员对故障进行管理和分类。搜集到的MDH80加工中心故障数据一共有89个， 本节会对这89个故障数据进行初步分析。<br /> 2. 3.1故障频率分析<br /> 本文将所有的故障数据进行分类整理，得到各个子系统的故障频数和故障频率。<br /> 表2. 3各个子系统故障频率<br /> Tab. 23 Failure frequency of subsystems</p> <table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse;mso-table-layout-alt:fixed;mso-table-overlap: never;mso-padding-alt:0cm .5pt 0cm .5pt"> <tbody> <tr style="mso-yfti-irow:0;mso-yfti-firstrow:yes;height:20.4pt;mso-height-rule: exactly"> <td width="193" style="width: 144.95pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 20.4pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2105pt">子系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="115" style="width: 86.15pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 20.4pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2105pt">故障频数</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="126" style="width: 94.55pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 20.4pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2105pt">故障频率</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:1;height:19.45pt;mso-height-rule:exactly"> <td width="193" style="width: 144.95pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2105pt">工件传输系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="115" style="width: 86.15pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">19</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> <td width="126" style="width: 94.55pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">21.35%</span></span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:2;height:19.45pt;mso-height-rule:exactly"> <td width="193" style="width: 144.95pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2105pt">控制电气系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="115" style="width: 86.15pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">17</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> <td width="126" style="width: 94.55pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">19.1%</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:3;height:19.45pt;mso-height-rule:exactly"> <td width="193" style="width: 144.95pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2105pt">夹具系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="115" style="width: 86.15pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">13</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> <td width="126" style="width: 94.55pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">14.61%</span></span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:4;height:19.2pt;mso-height-rule:exactly"> <td width="193" style="width: 144.95pt; padding: 0cm 0.5pt; height: 19.2pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2105pt">刀库系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="115" style="width: 86.15pt; padding: 0cm 0.5pt; height: 19.2pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">9</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> <td width="126" style="width: 94.55pt; padding: 0cm 0.5pt; height: 19.2pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">10.11%</span></span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:5;height:19.45pt;mso-height-rule:exactly"> <td width="193" style="width: 144.95pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2105pt">进给系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="115" style="width: 86.15pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">7</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> <td width="126" style="width: 94.55pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">7.87%</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:6;height:19.7pt;mso-height-rule:exactly"> <td width="193" style="width: 144.95pt; padding: 0cm 0.5pt; height: 19.7pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2105pt">机床防护及基础件</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="115" style="width: 86.15pt; padding: 0cm 0.5pt; height: 19.7pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">7</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> <td width="126" style="width: 94.55pt; padding: 0cm 0.5pt; height: 19.7pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">7.87%</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:7;height:19.45pt;mso-height-rule:exactly"> <td width="193" style="width: 144.95pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2105pt">液压气动系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="115" style="width: 86.15pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">7</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> <td width="126" style="width: 94.55pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">7.87%</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:8;height:19.2pt;mso-height-rule:exactly"> <td width="193" style="width: 144.95pt; padding: 0cm 0.5pt; height: 19.2pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2105pt">主轴系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="115" style="width: 86.15pt; padding: 0cm 0.5pt; height: 19.2pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">4</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> <td width="126" style="width: 94.55pt; padding: 0cm 0.5pt; height: 19.2pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">4. 49%</span></span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:9;height:19.45pt;mso-height-rule:exactly"> <td width="193" style="width: 144.95pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="margin-left:18.0pt;text-align:center; text-indent:0cm;line-height:10.5pt;mso-line-height-rule:exactly;background: transparent;mso-element:frame;mso-element-frame-width:325.7pt;mso-element-frame-height: 215.3pt;mso-element-wrap:none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal: page;mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2105pt">冷却排屑除尘除雾系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="115" style="width: 86.15pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">4</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> <td width="126" style="width: 94.55pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">4. 49%</span></span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:10;mso-yfti-lastrow:yes;height:20.15pt;mso-height-rule: exactly"> <td width="193" style="width: 144.95pt; border-style: none none solid; border-bottom-color: windowtext; border-bottom-width: 1pt; padding: 0cm 0.5pt; height: 20.15pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2105pt">集中润滑系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="115" style="width: 86.15pt; border-style: none none solid; border-bottom-color: windowtext; border-bottom-width: 1pt; padding: 0cm 0.5pt; height: 20.15pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">2</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> <td width="126" style="width: 94.55pt; border-style: none none solid; border-bottom-color: windowtext; border-bottom-width: 1pt; padding: 0cm 0.5pt; height: 20.15pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:325.7pt;mso-element-frame-height:215.3pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:147.3pt;mso-element-top:418.25pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">2. 25%</span></span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> </tr> </tbody> </table> <p>从表2.3和图2.2中可以看出，工件传输系统和控制电气系统的故障频率所占的比 重较大，都能达到20%左右，属于故障频发部位；夹具系统和刀库系统故障频率也都超 过了 10%,也应该加强重视。而主轴系统、冷却系统和集中润滑系统的故障频率都较小， 但是并不能说明它们对加工中心的故障危害度就一定是最小的，对此将会在下一章论 述。只要发生了故障就会造成加工中心停止运行，影响生产节拍，因此对于故障频发的 子系统要起到应有的重视。<br /> 2. 3. 2故障维修时间分析<br /> 根据故障记录表中的时间数据，本文总结出了所有的子系统的平均维修时间。每个 故障的维修时间等于维修完工时间减去故障发生时间。<br /> 表2. 4各子系统平均维修时间<br /> Tab. 2.4 Mean maintenance time of subsystems</p> <table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse;mso-table-layout-alt:fixed;mso-table-overlap: never;mso-padding-alt:0cm .5pt 0cm .5pt"> <tbody> <tr style="mso-yfti-irow:0;mso-yfti-firstrow:yes;height:29.3pt;mso-height-rule: exactly"> <td width="164" style="width: 123.1pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 29.3pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2105pt">子系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="111" style="width: 83.5pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 29.3pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 13.2pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2105pt">平均维修时间 </span><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">(min)</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> <td width="149" style="width: 111.6pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 29.3pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2105pt">子系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="116" style="width: 86.9pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 29.3pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 13.2pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2105pt">平均维修时间 </span><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">(min)</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:1;height:19.45pt;mso-height-rule:exactly"> <td width="164" style="width: 123.1pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2105pt">工件传输系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="111" style="width: 83.5pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="margin-left:8.0pt;text-align:center; text-indent:0cm;line-height:16.0pt;mso-line-height-rule:exactly;background: transparent;mso-element:frame;mso-element-frame-width:405.1pt;mso-element-frame-height: 127.45pt;mso-element-wrap:none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal: page;mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">, 102</span></span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="149" style="width: 111.6pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2105pt">控制电气系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="116" style="width: 86.9pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">62</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:2;height:19.45pt;mso-height-rule:exactly"> <td width="164" style="width: 123.1pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2105pt">夹具系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="111" style="width: 83.5pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">74</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> <td width="149" style="width: 111.6pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2105pt">刀库系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="116" style="width: 86.9pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">67</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:3;height:19.45pt;mso-height-rule:exactly"> <td width="164" style="width: 123.1pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2105pt">进给系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="111" style="width: 83.5pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">99</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> <td width="149" style="width: 111.6pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="margin-left:13.0pt;text-align:center; text-indent:0cm;line-height:10.5pt;mso-line-height-rule:exactly;background: transparent;mso-element:frame;mso-element-frame-width:405.1pt;mso-element-frame-height: 127.45pt;mso-element-wrap:none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal: page;mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2105pt">机床防护及基础件</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="116" style="width: 86.9pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">55</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:4;height:19.45pt;mso-height-rule:exactly"> <td width="164" style="width: 123.1pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2105pt">液压气动系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="111" style="width: 83.5pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">56</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> <td width="149" style="width: 111.6pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2105pt">主轴系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="116" style="width: 86.9pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">210</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:5;mso-yfti-lastrow:yes;height:20.4pt;mso-height-rule: exactly"> <td width="164" style="width: 123.1pt; border-style: none none solid; border-bottom-color: windowtext; border-bottom-width: 1pt; padding: 0cm 0.5pt; height: 20.4pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="margin-left:8.0pt;text-align:center; text-indent:0cm;line-height:10.5pt;mso-line-height-rule:exactly;background: transparent;mso-element:frame;mso-element-frame-width:405.1pt;mso-element-frame-height: 127.45pt;mso-element-wrap:none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal: page;mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2105pt">冷却排屑除尘除雾系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="111" style="width: 83.5pt; border-style: none none solid; border-bottom-color: windowtext; border-bottom-width: 1pt; padding: 0cm 0.5pt; height: 20.4pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">47</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> <td width="149" style="width: 111.6pt; border-style: none none solid; border-bottom-color: windowtext; border-bottom-width: 1pt; padding: 0cm 0.5pt; height: 20.4pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2105pt">集中润滑系统</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="116" style="width: 86.9pt; border-style: none none solid; border-bottom-color: windowtext; border-bottom-width: 1pt; padding: 0cm 0.5pt; height: 20.4pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:405.1pt;mso-element-frame-height:127.45pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:105.45pt;mso-element-top:633.8pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">13</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> </tr> </tbody> </table> <p><br /> 从表2.4中可以看出，主轴系统的平均维修时间最长。为了减少维修时间，维修人 员应该做好完整的维修预案，事先考虑到所有可能的故障原因，减少排查的步骤。<br /> 2.3.3故障责任分析<br /> 加工中心从设计到使用要经过很多环节，比如设计、生产、购买外购件、装配、使 用、管理、维护等。现代的产品可靠性分析不能仅仅局限于产品本身，还要对产品从设 计到报废处理有一个完整的管理方法。故障责任分析法能够帮助加工中心的制造商和使 用用户制定有效的管理方案，帮助故障数据管理者将故障数据反馈给相对应的部门以提 高管理效率。本文将故障责任分为如下几类： _<br /> (1) 操作责任：操作责任即由车间生产线上的工作人员操作失误造成的故障，包 括误操作、维修过程中造成了损坏以及一些正常的检查维护并未做好而造成的故障。<br /> (2) 外购与外协件责任：指的是外购件出现问题。外购件包括电主轴、机械手、 数控系统等硬件部分，还有一些传感器开关、电气设备。<br /> (3) 加工责任：指加工中心中由生产厂家加工过程失误造成的故障。囘时也包括 有些数控系统程序设计没有问题，但有些参数写错了。<br /> (4) 装配责任：装配是加工中心制造过程中的重要环节。属于装配责任的故障包 括螺丝没拧紧，装配间隙过大或过小，元器件装错位置，漏装某些零部件，因装配不当 而引起的整个系统性能不佳等。<br /> (5) 设计责任：有一些故障是由于设计不合理导致的。比如没有完全考虑到实际 情况而造成的结构设计失误，并未充分考虑到加工中心使用时会出现的突发情况而导致 的程序设计不完善。<br /> 分析由操作责任产生的故障可以帮助加工中心使用厂家改进操作规范与流程，更加 适应现代化的生产线管理；分析由外购与外协件责任引起的故障可以帮助机床制造企业 的采购人员制定新的零件选购方案，并在与零件供应商之间的谈判中提供有效的数据支 撑；分析由加工责任与装配责任引起的故障能够帮助机床制造商提高加工中心制造水 平；分析由设计责任引起的故障其实是一个反馈过程，它可以帮助加工中心设计人员改 进设计方案，设计出可靠性水平更高的新产品。表2.5中所列的是MDH80加工中心89 个故障的故障责任所占的比例。<br /> 表2. 5各故障责任所占比重<br /> Tab. 2.5 Proportion of responsible</p> <table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse;mso-table-layout-alt:fixed;mso-table-overlap: never;mso-padding-alt:0cm .5pt 0cm .5pt"> <tbody> <tr style="mso-yfti-irow:0;mso-yfti-firstrow:yes;height:20.9pt;mso-height-rule: exactly"> <td width="219" style="width: 164.15pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 20.9pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:264.7pt;mso-element-frame-height:119.05pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:175.5pt;mso-element-top:154.75pt"><span class="2105pt">故障责任</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="134" style="width: 100.55pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 20.9pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:264.7pt;mso-element-frame-height:119.05pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:175.5pt;mso-element-top:154.75pt"><span class="2105pt">比例</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:1;height:19.45pt;mso-height-rule:exactly"> <td width="219" style="width: 164.15pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:264.7pt;mso-element-frame-height:119.05pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:175.5pt;mso-element-top:154.75pt"><span class="2105pt">操作责任</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="134" style="width: 100.55pt; border-style: solid none none; border-top-color: windowtext; border-top-width: 1pt; padding: 0cm 0.5pt; height: 19.45pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:264.7pt;mso-element-frame-height:119.05pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:175.5pt;mso-element-top:154.75pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">19.1%</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:2;height:19.2pt;mso-height-rule:exactly"> <td width="219" style="width: 164.15pt; padding: 0cm 0.5pt; height: 19.2pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:264.7pt;mso-element-frame-height:119.05pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:175.5pt;mso-element-top:154.75pt"><span class="2105pt">外购与外协件责任</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="134" style="width: 100.55pt; padding: 0cm 0.5pt; height: 19.2pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:264.7pt;mso-element-frame-height:119.05pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:175.5pt;mso-element-top:154.75pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">21.3%</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:3;height:19.7pt;mso-height-rule:exactly"> <td width="219" style="width: 164.15pt; padding: 0cm 0.5pt; height: 19.7pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:264.7pt;mso-element-frame-height:119.05pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:175.5pt;mso-element-top:154.75pt"><span class="2105pt">加工责任</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="134" style="width: 100.55pt; padding: 0cm 0.5pt; height: 19.7pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:264.7pt;mso-element-frame-height:119.05pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:175.5pt;mso-element-top:154.75pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">15.7%</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:4;height:19.2pt;mso-height-rule:exactly"> <td width="219" style="width: 164.15pt; padding: 0cm 0.5pt; height: 19.2pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:264.7pt;mso-element-frame-height:119.05pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:175.5pt;mso-element-top:154.75pt"><span class="2105pt">装配责任</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="134" style="width: 100.55pt; padding: 0cm 0.5pt; height: 19.2pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:264.7pt;mso-element-frame-height:119.05pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:175.5pt;mso-element-top:154.75pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">31.5%</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> </tr> <tr style="mso-yfti-irow:5;mso-yfti-lastrow:yes;height:20.65pt;mso-height-rule: exactly"> <td width="219" style="width: 164.15pt; border-style: none none solid; border-bottom-color: windowtext; border-bottom-width: 1pt; padding: 0cm 0.5pt; height: 20.65pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 10.5pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:264.7pt;mso-element-frame-height:119.05pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:175.5pt;mso-element-top:154.75pt"><span class="2105pt">设计责任</span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> <td width="134" style="width: 100.55pt; border-style: none none solid; border-bottom-color: windowtext; border-bottom-width: 1pt; padding: 0cm 0.5pt; height: 20.65pt; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;"> <p class="20" align="center" style="text-align:center;text-indent:0cm;line-height: 16.0pt;mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:264.7pt;mso-element-frame-height:119.05pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:175.5pt;mso-element-top:154.75pt"><span class="2AngsanaUPC"><span lang="EN-US" style="font-size:9.0pt">12.4%</span></span><span style="font-size: 9.0pt"><o:p></o:p></span></p> </td> </tr> </tbody> </table> <p>从表2.5上可以看出，装配责任比例占到30%以上，因此装配环节是需要重点改善 的。而其他类型的故障责任所占比例也不小，都需要提高重视程度。<br /> 2. 4本章小结<br /> 本章介绍了生产线及MDH80加工中心的基本情况，并将加工中心分为了十个不同 功能的子系统。制定了故障数据采集和整理规范。介绍了本次研究所用的加工中心是处 在早期失效期。将采集到的89个故障数据进行了初步分析，得出各个子系统的故障频 率和平均维修时间，并制定了故障责任分类规范。本章为之后两章的加工中心可靠性分 析工作奠定了基础。</p></div> <div 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