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class="13pt">第6章结论与展望</span></a></p> <div class="Section1"> <p class="30" style="margin-bottom:16.35pt;line-height:13.0pt;mso-line-height-rule: exactly;mso-pagination:lines-together;page-break-after:avoid;background:transparent"><a name="bookmark60"><span class="33pt"><span lang="EN-US">6.1</span></span></a><span class="33pt">结论</span></p> <p class="20" style="margin-right:19.0pt;text-align:justify;text-justify:inter-ideograph; text-indent:26.0pt;line-height:23.3pt;mso-line-height-rule:exactly;background: transparent"><span class="2SimSun"><span style="font-size: 11.5pt;">本论文在深入研宄机床静力学、动力学分析方法国内外研宄现状的基础上, 对龙门加工中心关键部件以及整机装配体进行了比较完善的静动态特性分析与 研究。完成了预期的工作任务，达到了全面了解机床静动态特性的目的。论文 的总结如下：</span></span></p> <p class="20" style="margin-top:0cm;margin-right:19.0pt;margin-bottom:6.2pt; margin-left:0cm;text-align:justify;text-justify:inter-ideograph;text-indent: 32.0pt;line-height:23.5pt;mso-line-height-rule:exactly;mso-list:l0 level1 lfo1; tab-stops:55.0pt;background:transparent"><!--[if !supportLists]--><span style="font-size: 11.5pt; font-family: SimSun;">(1)<span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span class="2SimSun"><span style="font-size: 11.5pt;">通过静力分析可以得到整机的节点位移</span></span><span class="2SimSun5"><span lang="EN-US">DMX</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">=0. 344</span></span><span class="2SimSun5"><span lang="EN-US">X</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">10'</span></span><span class="2SimSun"><span style="font-size: 11.5pt;">节点应力 </span></span><span class="2SimSun5"><span lang="EN-US">SMX</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">=0. 242</span></span><span class="2SimSun5"><span lang="EN-US">X</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">10<sup>9</sup></span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: MingLiU;">、</span></span><span class="2SimSun"><span style="font-size: 11.5pt;">节点应变</span></span><span class="2SimSun5"><span lang="EN-US">SMX</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">=2. 21</span></span><span class="2SimSun5"><span lang="EN-US">XKT</span></span><span class="2SimSun"><sup><span style="font-size: 11.5pt; font-family: SimSun;">3</span></sup></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: MingLiU;">，</span></span><span class="2SimSun"><span style="font-size: 11.5pt;">从分析的结果可以算出整机装配 体的变形在允许的范围内，应力远远小于材料的许用应力，所以我们可以断言 该加工中心在正常运转的过程中不会发生应力集中而破坏。</span></span><o:p></o:p></p> <p class="20" align="left" style="margin: 0cm 0cm 6pt; text-indent: 32pt; line-height: 23.3pt; background: transparent;"><!--[if !supportLists]--><span style="font-size: 11.5pt; font-family: SimSun;">(2)<span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span class="2SimSun"><span style="font-size: 11.5pt;">通过谐响应分析得出滑枕滑块在</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">42</span></span><span class="2SimSun5"><span lang="EN-US">Hz</span></span><span class="2SimSun"><span style="font-size: 11.5pt;">和</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">43</span></span><span class="2SimSun5"><span lang="EN-US">Hz</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">,</span></span><span class="2SimSun"><span style="font-size: 11.5pt;">结构的谐响应出现了 幅值，而机床在工作过程中外界的驱振力频率在</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">35-50</span></span><span class="2SimSun5"><span lang="EN-US">HZ</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: MingLiU;">，</span></span><span class="2SimSun"><span style="font-size: 11.5pt;">所以如果采用此结构 就有可能出现共振的情况，鉴于机床要实现特定的功能，尺寸方面不能改变， 所以我建议滑枕、滑块更换刚度更大，质量更轻的材料。同样龙门结构在</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">36</span></span><span class="2SimSun5"><span lang="EN-US">Hz </span></span><span class="2SimSun"><span style="font-size: 11.5pt;">和</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">44</span></span><span class="2SimSun5"><span lang="EN-US">Hz</span></span><span class="2SimSun"><span style="font-size: 11.5pt;">时，结构的谐响应也出现了幅值，所以龙门结构材料也需要更换为刚度 更大，质量更轻的材料。</span></span><o:p></o:p></p> <p class="20" style="margin-top:0cm;margin-right:19.0pt;margin-bottom:5.8pt; margin-left:0cm;text-align:justify;text-justify:inter-ideograph;text-indent: 32.0pt;line-height:23.3pt;mso-line-height-rule:exactly;mso-list:l0 level1 lfo1; tab-stops:55.0pt;background:transparent"><!--[if !supportLists]--><span style="font-size: 11.5pt; font-family: SimSun;">(3)<span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span class="2SimSun"><span style="font-size: 11.5pt;">整机滑枕下端圆心处的点，谐响应分析三个方向第一峰值所对应的频 率分别是</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">22</span></span><span class="2SimSun5"><span lang="EN-US">Hz</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: MingLiU;">、</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">19</span></span><span class="2SimSun5"><span lang="EN-US">Hz</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: MingLiU;">、</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">31</span></span><span class="2SimSun5"><span lang="EN-US">Hz</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">,</span></span><span class="2SimSun"><span style="font-size: 11.5pt;">均在</span></span><span class="2SimSun"><span style="font-size: 11.5pt; font-family: SimSun;">35</span></span><span class="2SimSun5"><span lang="EN-US">Hz</span></span><span class="2SimSun"><span style="font-size: 11.5pt;">以下，所以整机的结构在实际使用的过 程中是安全的。</span></span><o:p></o:p></p> <p class="20" style="margin-top:0cm;margin-right:19.0pt;margin-bottom:15.6pt; margin-left:0cm;text-align:justify;text-justify:inter-ideograph;text-indent: 32.0pt;line-height:23.5pt;mso-line-height-rule:exactly;mso-list:l0 level1 lfo1; tab-stops:55.0pt;background:transparent"><!--[if !supportLists]--><span style="font-size: 11.5pt; font-family: SimSun;">(4)<span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span class="2SimSun"><span style="font-size: 11.5pt;">本文分析的整机装配体的单元网格数量超过200万，在大模型定义装 配体方面，本文首次提出了定义接触与节点耦合相结合的方法来定义整机装配 体，这在以后定义大模型的装配体上面给出了一个范例。</span></span><o:p></o:p></p> <p class="20" style="margin-top:0cm;margin-right:0cm;margin-bottom:11.05pt; margin-left:0cm;text-align:justify;text-justify:inter-ideograph;text-indent: 32.0pt;line-height:11.5pt;mso-line-height-rule:exactly;mso-list:l0 level1 lfo1; tab-stops:56.3pt;background:transparent"><!--[if !supportLists]--><span style="font-size: 11.5pt; font-family: SimSun;">(5)<span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span class="2SimSun"><span style="font-size: 11.5pt;">在应力应变试验中本文首次采用了无线采集的方法，这种方法更加的</span></span><o:p></o:p></p> <p class="20" align="left" style="line-height: 11.5pt; background: transparent;"><span class="2SimSun"><span style="font-size: 11.5pt;">安全、准确，这种方法在我此前查阅的文献中鲜有见到。</span></span></p> <p class="30" style="margin-bottom:15.9pt;line-height:13.0pt;mso-line-height-rule: exactly;mso-pagination:lines-together;page-break-after:avoid;background:transparent"><a name="bookmark61"><span class="33pt"><span lang="EN-US">6.2</span></span></a><span class="33pt">展望</span></p> <p class="20" style="text-align:justify;text-justify:inter-ideograph;text-indent: 26.0pt;line-height:23.3pt;mso-line-height-rule:exactly;background:transparent"><span class="2SimSun"><span style="font-size: 11.5pt;">本文虽然在研宄龙门机床静动态特性方面提出了比较完善的研宄过程和方 法，但是对于重载式动梁龙门移动式加工中心的整体结构来说，是一个比较复 杂的系统问题，尤其在结合面参数识别上始终是有限元分析的一个难题。其次 就是如果能实现自适应分析，那么对于大模型的动力学分析结果准确性的提升 具有很大的影响。针对以上的问题，我认为后续的工作可望在一下几个方面进 行：</span></span></p> <p class="20" style="margin-left:0cm;text-align:justify;text-justify:inter-ideograph; text-indent:32.0pt;line-height:23.3pt;mso-line-height-rule:exactly;mso-list: l1 level1 lfo2;tab-stops:53.55pt;background:transparent"><!--[if !supportLists]--><span style="font-size: 11.5pt; font-family: SimSun;">(1)<span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span class="2SimSun"><span style="font-size: 11.5pt;">本文对于龙门机床静动态特性的分析是在定义结合面的基础上进行的, 然而对于结合面的参数的设置可能还不是很准确，后续的研宄主要应该集中在 如何能准确的设置结合面的参数上面。</span></span><o:p></o:p></p> <p class="20" style="margin-left:0cm;text-align:justify;text-justify:inter-ideograph; text-indent:32.0pt;line-height:23.3pt;mso-line-height-rule:exactly;mso-list: l1 level1 lfo2;tab-stops:53.8pt;background:transparent"><!--[if !supportLists]--><span style="font-size: 11.5pt; font-family: SimSun;">(2)<span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span class="2SimSun"><span style="font-size: 11.5pt;">大模型动力学分析的另一个急需要解决的问题是，实现自适应分析。 在瞬态动力学分析时若能实现自适应分析，那么仿真结果就能更加贴近实际工 况，所以实现自适应分析应该是后续研宄的主要工作。</span></span></p> <p class="20" style="margin-left:0cm;text-align:justify;text-justify:inter-ideograph; text-indent:32.0pt;line-height:23.3pt;mso-line-height-rule:exactly;mso-list: l1 level1 lfo2;tab-stops:53.8pt;background:transparent"> </p> <p class="20" style="margin-left:0cm;text-align:justify;text-justify:inter-ideograph; text-indent:32.0pt;line-height:23.3pt;mso-line-height-rule:exactly;mso-list: l1 level1 lfo2;tab-stops:53.8pt;background:transparent"><o:p></o:p></p> </div> <p class="MsoNormal"><span style="font-size:9.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">本文采摘自“龙门加工中心整机及关键部件静动态特性分析与试验研究”，因为编辑困难导致有些函数、表格、图片、内容无法显示，有需要者可以在网络中查找相关文章！本文由伯特利数控整理发表文章均来自网络仅供学习参考，转载请注明！</span><span lang="EN-US" style="font-size:9.0pt"> <o:p></o:p></span></p></div> <div class="blank30"></div> <!-- tag --> <div class="blank10"></div> 标签： <a href='/index.php?case=tag&act=show&tag=%E9%BE%99%E9%97%A8%E5%8A%A0%E5%B7%A5%E4%B8%AD%E5%BF%83' target='_blank'>龙门加工中心</a> <a href='/index.php?case=tag&act=show&tag=%E5%8A%A0%E5%B7%A5%E4%B8%AD%E5%BF%83' target='_blank'>加工中心</a> <a href='/index.php?case=tag&act=show&tag=%E6%95%B0%E6%8E%A7%E5%8A%A0%E5%B7%A5%E4%B8%AD%E5%BF%83' target='_blank'>数控加工中心</a> <a 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href="/bethel/5-aix/show-2966.html" target="_blank">六角亭五轴加工工艺</a></h4> <p>本文以组合式六角亭模型为实例，分析工艺难点与加工可行性，指出该模型的加工难点是模型形状不规则和整体刚性差，并通过设计新的工艺方案解决加工难点，完成了模型整体的加工。新的加工工艺有助于提高加工效率和精度，为五轴数控加工提供了一个典型案例，对于五轴加工中心数控加工也具有指导作用和重要… <a href="/bethel/5-aix/show-2966.html" target="_blank">[了解更多]</a></p> </div> <div class="news-list list-border list-border-w"> <div class="list-date"> <span>05</span> <p>2024-11</p> </div> <h4><a title="自适应控制方法在混联五轴加工中心中的应用" href="/bethel/5-aix/show-2965.html" target="_blank">自适应控制方法在混联五轴加工中心中的应用</a></h4> <p>宇匠数控 备注：为保证文章的完整度，本文核心内容由PDF格式显示，如未有显示请刷新或转换浏览器尝试，手机浏览可能无法正常使用！本文摘要：通过对混联五轴加工中心自适应深度学习控制方法的 研 究，可 知 此 方 法 的 创 新 之 处 在 于：１）建 立 了 机 床 的 运 动 学 … <a href="/bethel/5-aix/show-2965.html" target="_blank">[了解更多]</a></p> </div> <div class="news-list list-border list-border-w"> <div class="list-date"> <span>05</span> <p>2024-11</p> </div> <h4><a title="五轴加工中心和五轴钻攻中心在机测量探头补偿" href="/bethel/5-aix/show-2959.html" target="_blank">五轴加工中心和五轴钻攻中心在机测量探头补</a></h4> 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