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letter-spacing: 0pt; font-size: 10.5pt;">3.4</span><span style="line-height: 22.1pt; text-align: justify; text-indent: 0pt; font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">空心滚珠丝杠副在不同冷却液流速下冷却液中心线温度分布及热变 形比较</span></p> <div class="Section0"> <p class="NewStyle18" style="margin: 0pt 0pt 37.65pt; text-indent: 0pt;"><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">为研究空心滚珠丝杠的温度分布及热变形规律，下面仿真了在不同的冷却液流速 </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;">lm</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;">s</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;">lm</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;">s</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;">lm</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;">s</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;">lm</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;">s</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">、10</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;">s</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">,10</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;">s</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;">下的空心丝杠的温度分布及热变形。 比较图</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">3.27</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">—图</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">3.29</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">可知：螺母横断面的温度分布是分层的，且随着冷却液流速的 增加，螺母横断面的温度分布变化很大，尤其是空心丝杠中心的温度明显地降低了。</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"><o:p></o:p></span></p> </div> <p class="NewStyle18" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:27.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; line-height:22.1000pt; mso-line-height-rule:exactly; "><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">图</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">3.30</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">是空心滚珠丝杠不同冷却液流速下冷却液中轴线的温度分布图，其分析 类似于图3.23。随着冷却液流量的增加，温度分布呈下降趋势。从图中可以看出在螺 母热源处滚珠丝杠温度陡然增加，而在其他位置的温度较低且温度变化不大。这说明 螺母处的热源是主要的热源，随着冷却液流量的增加，丝杠的温度可以达到很低的水 平（温升仅为</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">0.25° </span><span class="16" style="font-family: 'Times New Roman'; letter-spacing: 0pt; font-size: 10.5pt;">C</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;">相比于图</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">3.2</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">实心滚珠丝杠的温度分布，其温度升高大为降 低，单从空心丝杠冷却液的温度低来说，丝杠处于较低的温度状态，有效的减小了丝 杠的热位移。</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"><o:p></o:p></span><span style="font-family: MingLiU; letter-spacing: 0pt; font-size: 10.5pt;"><br clear="all" style="page-break-before:always" /> </span><span style="font-family: MingLiU; letter-spacing: 0pt; font-size: 10.5pt;"><o:p></o:p></span></p> <p class="NewStyle18" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:25.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; line-height:22.1000pt; mso-line-height-rule:exactly; "><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">图</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">3.31</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">是空心滚珠丝杠的热位移图，比较流速</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;">lm</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;">s</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</span><span class="16" style="font-family: 'Times New Roman'; letter-spacing: 0pt; font-size: 10.5pt;">lm</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;">s</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">时的热变形量有 少许的变化，而比较流速</span><span class="16" style="font-family: 'Times New Roman'; letter-spacing: 0pt; font-size: 10.5pt;">lm</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;">s</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</span><span class="16" style="font-family: 'Times New Roman'; letter-spacing: 0pt; font-size: 10.5pt;">lOm</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;">s</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">时的热变形量几乎没有变化。由此可以看 出冷却液流速对滚珠丝杠冷却的影响很小，没有必要为了提高冷却液的冷却效果而增 加制冷设备的性能，然而对于制冷设备保持其冷却液温度的恒定是必要的。另外，从 空心丝杠抑制热伸长在</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">0.01</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;">数量级的角度看，如果想继续进一步抑制丝杠的热伸长, 则需要配合其他的热误差补偿方法。</span></p> <p class="NewStyle18" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:25.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; line-height:22.1000pt; mso-line-height-rule:exactly; "> </p> <p class="NewStyle18" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:25.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; line-height:22.1000pt; mso-line-height-rule:exactly; "><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> <p class="NewStyle18" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; text-indent:25.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; line-height:22.1000pt; mso-line-height-rule:exactly; "><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 10.5pt;"><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=%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' target='_blank'>数控机床</a> <a href='/index.php?case=tag&act=show&tag=%E6%BB%9A%E7%8F%A0%E4%B8%9D%E6%9D%86' target='_blank'>滚珠丝杆</a> <!-- 分类 --> <div class="blank10"></div> 分类： <a href='/bethel/type/jnc/type-1.html' 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