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font-size: 10.5pt;">3.8</span><span style="line-height: 14pt; text-align: justify; text-indent: 0pt; font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">本章小结</span></p> <p class="NewStyle19" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:26.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; "><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">本章从仿真分析的角度对高速机床伺服传动系统的热位移做了深入的研宄。在仿 真分析时，通过空心滚珠丝杠与实心滚珠丝杠冷却液冷却的热仿真对比，得出以下结论：</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"><o:p></o:p></span></p> <p class="NewStyle19" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:26.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; "><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">1、</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"> </span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">从温度分布的角度，实心/空心滚珠丝杠的温度分布略有不同。相比于实心滚 珠丝杠，空心滚珠丝杠两端轴承的温度有了显著的温升。这主要是因为冷却液带走大 量的摩擦热量使得两端轴承的发热量显现出来。</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"><o:p></o:p></span></p> <p class="NewStyle19" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:26.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; "><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">2、</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"> </span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">实心滚珠丝杠较大的热变形</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">（</span><span class="16" style="font-family: 'Times New Roman'; letter-spacing: 0pt; font-size: 10.5pt;">lmm</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">数量级</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">）</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">与径向热膨胀</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">（0.01</span><span class="16" style="font-family: 'Times New Roman'; letter-spacing: 0pt; font-size: 10.5pt;">mm</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">数量级</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">) </span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">不能满足伺服系统的定位精度。仿真空心丝杠、空心螺母通入冷却液冷却，空心滚珠 丝杠的热伸长</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">（</span><span class="16" style="font-family: 'Times New Roman'; letter-spacing: 0pt; font-size: 10.5pt;">O</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">.</span><span class="16" style="font-family: 'Times New Roman'; letter-spacing: 0pt; font-size: 10.5pt;">Olmm</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">)</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">与热膨胀</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">（120</span><span class="16" style="font-family: 'Times New Roman'; letter-spacing: 0pt; font-size: 10.5pt;">m</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">/</span><span class="16" style="font-family: 'Times New Roman'; letter-spacing: 0pt; font-size: 10.5pt;">min</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">时仿真最大</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">0.00015</span><span class="16" style="font-family: 'Times New Roman'; letter-spacing: 0pt; font-size: 10.5pt;">mm</span><span class="17" style="font-family: 宋体; letter-spacing: 1.5pt; font-size: 10.5pt;">)</span><span class="17" style="font-family: 宋体; letter-spacing: 1.5pt; font-size: 10.5pt;">有效抑制了 </span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">丝杠的热位移与轴向热膨胀。</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"><o:p></o:p></span></p> <p class="NewStyle19" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:26.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; "><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">3、</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"> </span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">通过对不同的仿真条件（不同的转速、不同的冷却液流量、不同的冷却介质、 不同的开孔大小）的对比，得出了空心滚珠丝杠的热变形规律及相关的优化参数。</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"><o:p></o:p></span></p> <p class="NewStyle19" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:26.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; "><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">4、</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"> </span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">研宄发现空心冷却效果在高速滚珠丝杠进给系统中的局限性。如果热误差在</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"><o:p></o:p></span></p> <p class="NewStyle19" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:0.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; "><span class="16" style="font-family: 'Times New Roman'; letter-spacing: 0pt; font-size: 10.5pt;">O</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">.</span><span class="16" style="font-family: 'Times New Roman'; letter-spacing: 0pt; font-size: 10.5pt;">Olmm</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">数量级的基础上再进一步抑制滚珠丝杠的热位移则需要配合其他的热补偿方 法。</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"><o:p></o:p></span></p> <p class="NewStyle19" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:26.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; "><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">5、</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"> </span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">实心滚珠丝杠达到稳态的时间远大于空心滚珠丝杠，这对于机床的热机时间 具有重要的意义。</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"><o:p></o:p></span></p> <p class="NewStyle19" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:26.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; "><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">6、</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"> </span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">仿真分析弥补了理论上的不足，得到了在确定工况下的空心/实心滚珠丝杠的 温度分布及每一位置的热应变及热变形，详细地说明了空心滚珠丝杠的热特性。</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"><br clear="all" style="page-break-before:always;mso-break-type:section-break" /> </span></p> <p class="NewStyle19" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:26.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; "> </p> <p class="NewStyle19" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:26.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; "> </p> <p class="NewStyle19" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:26.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; "><span style="font-size:9.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: "Times New Roman";mso-font-kerning:1.0pt;mso-ansi-language:EN-US;mso-fareast-language: ZH-CN;mso-bidi-language:AR-SA">本文采摘自“空心滚珠丝杠在数控机床伺服进给系统中的应用研究”，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></p></div> <div class="blank30"></div> <!-- tag --> <div class="blank10"></div> 标签： <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 href='/index.php?case=tag&act=show&tag=CNC%E5%8A%A0%E5%B7%A5%E4%B8%AD%E5%BF%83' target='_blank'>CNC加工中心</a> <a href='/index.php?case=tag&act=show&tag=%E6%95%B0%E6%8E%A7%E6%9C%BA%E5%BA%8A' 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