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valign="top" align="left" height="893" style="padding-top:0cm;padding-right: 0cm;padding-bottom:0cm;padding-left:0cm"> <p class="620" align="center" style="margin-top:0cm;margin-right:11.0pt; margin-bottom:21.8pt;margin-left:0cm;text-align:center;line-height:35.5pt; mso-line-height-rule:exactly;background:transparent;mso-element:frame; mso-element-frame-width:464.9pt;mso-element-frame-height:669.8pt;mso-element-wrap: none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal:page; mso-element-left:59.95pt;mso-element-top:114.4pt;mso-height-rule:exactly"><a name="bookmark0"><span class="620pt"><span style="font-size:9.0pt">镗铣加工中心主轴部件热特性分析<br /> 中文摘要</span></span></a><span style="font-size:9.0pt"><o:p></o:p></span></p> <p class="160" style="margin-top:0cm;margin-right:8.0pt;margin-bottom:0cm; margin-left:19.0pt;margin-bottom:.0001pt;text-align:justify;text-justify: inter-ideograph;text-indent:24.0pt;line-height:23.3pt;mso-line-height-rule: exactly;background:transparent;mso-element:frame;mso-element-frame-width: 464.9pt;mso-element-frame-height:669.8pt;mso-element-wrap:none;mso-element-anchor-vertical: page;mso-element-anchor-horizontal:page;mso-element-left:59.95pt;mso-element-top: 114.4pt;mso-height-rule:exactly"><span class="160pt">工业发展水平的不断提高，为机床行业的发展带来了新的机遇，也带来了新的挑 战。高精密数控机床己经占据了我国制造业以及其他相关行业的基础地位。机床的加 工精度主要通过减小加工误差来实现。在减小加工误差的研宄过程中发现，机床热变 形误差在机床总加工误差中占据了相当大的比重。所以，探宄如何降低机床的热变形 误差就显得十分重要。主轴及其部件是卧式镗铣加工中心的核心组成部分，而它在热 源作用下的热特性，直接影响到机床的加工精度。所以，对机床主轴部件进行热特性 分析，对减小加工误差，提高机床加工精度具有重要的理论以及工程应用价值。</span><span style="font-size:9.0pt"><o:p></o:p></span></p> <p class="160" style="margin-top:0cm;margin-right:8.0pt;margin-bottom:0cm; margin-left:19.0pt;margin-bottom:.0001pt;text-align:justify;text-justify: inter-ideograph;text-indent:24.0pt;line-height:23.3pt;mso-line-height-rule: exactly;background:transparent;mso-element:frame;mso-element-frame-width: 464.9pt;mso-element-frame-height:669.8pt;mso-element-wrap:none;mso-element-anchor-vertical: page;mso-element-anchor-horizontal:page;mso-element-left:59.95pt;mso-element-top: 114.4pt;mso-height-rule:exactly"><span class="160pt">本文以</span><span class="16AngsanaUPC"><span lang="EN-US" style="font-size: 9pt;">TH</span></span><span class="160pt"><span lang="EN-US" style="font-size:9.0pt;mso-ansi-language:EN-US;mso-fareast-language: EN-US;mso-bidi-language:EN-US">6213</span></span><span class="160pt">卧式镗铣加工中心的主轴箱及其关键功能部件为研宄对象，借助 有限元分析方法，通过热源分析、发热量计算以及数值模拟，得到主轴、</span><span class="16AngsanaUPC"><span lang="EN-US" style="font-size: 9pt;">ZF</span></span><span class="160pt">减速箱、 主轴箱的稳态、瞬态温度场分布以及相应热变形量大小，结合实际温度测量跑车试验 为主轴部件结构的优化设计以及热误差的补偿提供依据。</span><span style="font-size:9.0pt"><o:p></o:p></span></p> <p class="160" style="margin-left:19.0pt;text-align:justify;text-justify:inter-ideograph; text-indent:24.0pt;line-height:23.3pt;mso-line-height-rule:exactly; background:transparent;mso-element:frame;mso-element-frame-width:464.9pt; mso-element-frame-height:669.8pt;mso-element-wrap:none;mso-element-anchor-vertical: page;mso-element-anchor-horizontal:page;mso-element-left:59.95pt;mso-element-top: 114.4pt;mso-height-rule:exactly"><span class="160pt">本文主要工作如下：</span><span style="font-size:9.0pt"><o:p></o:p></span></p> <p class="160" style="margin-top:0cm;margin-right:8.0pt;margin-bottom:0cm; margin-left:19.0pt;margin-bottom:.0001pt;text-align:justify;text-justify: inter-ideograph;text-indent:24.0pt;line-height:23.3pt;mso-line-height-rule: exactly;mso-list:l0 level1 lfo1;tab-stops:60.75pt;background:transparent; mso-element:frame;mso-element-frame-width:464.9pt;mso-element-frame-height: 669.8pt;mso-element-wrap:none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal: page;mso-element-left:59.95pt;mso-element-top:114.4pt;mso-height-rule:exactly"><!--[if !supportLists]--><span lang="EN-US" style="letter-spacing: 0pt;">0.<span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span class="160pt">建立了镗铣加工中心主轴及其关键功能部件的热特性分析有限元模型；通过 模型简化等手段对其进行了优化，并且应用整体划分、局部细化的方法对模型进行了 有限元网格划分。</span><span style="font-size:9.0pt"><o:p></o:p></span></p> <p class="160" style="margin-top:0cm;margin-right:8.0pt;margin-bottom:0cm; margin-left:19.0pt;margin-bottom:.0001pt;text-align:justify;text-justify: inter-ideograph;text-indent:24.0pt;line-height:23.3pt;mso-line-height-rule: exactly;mso-list:l0 level1 lfo1;tab-stops:60.75pt;background:transparent; mso-element:frame;mso-element-frame-width:464.9pt;mso-element-frame-height: 669.8pt;mso-element-wrap:none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal: page;mso-element-left:59.95pt;mso-element-top:114.4pt;mso-height-rule:exactly"><!--[if !supportLists]--><span lang="EN-US" style="letter-spacing: 0pt;">1.<span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span class="160pt">分析了主轴及其部件的发热规律，确定了主要热源一主轴轴承；计算发热量 作为主轴热特性分析的外加载荷，计算模型各对流表面的对流换热系数作为有限元分 析的边界条件。</span><span style="font-size:9.0pt"><o:p></o:p></span></p> <p class="160" style="margin-top:0cm;margin-right:8.0pt;margin-bottom:0cm; margin-left:19.0pt;margin-bottom:.0001pt;text-align:justify;text-justify: inter-ideograph;text-indent:24.0pt;line-height:23.3pt;mso-line-height-rule: exactly;mso-list:l0 level1 lfo1;tab-stops:60.75pt;background:transparent; mso-element:frame;mso-element-frame-width:464.9pt;mso-element-frame-height: 669.8pt;mso-element-wrap:none;mso-element-anchor-vertical:page;mso-element-anchor-horizontal: page;mso-element-left:59.95pt;mso-element-top:114.4pt;mso-height-rule:exactly"><!--[if !supportLists]--><span lang="EN-US" style="letter-spacing: 0pt;">2.<span style="font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';"> </span></span><!--[endif]--><span class="160pt">对主轴、</span><span class="16AngsanaUPC"><span lang="EN-US" style="font-size: 9pt;">ZF</span></span><span class="160pt">减速箱以及主轴箱整体进行温度场有限元仿真分析，得到温度场 分布以及稳态、瞬态温度场变化规律：从稳态分析结果可以得出系统达到热平衡时的 温度场分布；从主轴瞬态温度变化曲线中可以得出，主轴系统温度曲线平滑，初始温 度变化率较大，逐渐趋于平稳，约在</span><span class="160pt"><span lang="EN-US" style="font-size:9.0pt;mso-ansi-language:EN-US; mso-fareast-language:EN-US;mso-bidi-language:EN-US">9600</span></span><span class="16AngsanaUPC"><span lang="EN-US" style="font-size: 9pt;">s</span></span><span class="160pt">左右达到热平衡；各主轴轴承位置温度最 高达</span><span class="160pt"><span lang="EN-US" style="font-size:9.0pt;mso-ansi-language:EN-US; mso-fareast-language:EN-US;mso-bidi-language:EN-US">45.456°</span></span><span class="16AngsanaUPC"><span lang="EN-US" style="font-size: 9pt;">C</span></span><span class="160pt">，出现在负载最高的三号轴承位置;而对称温度场分布则验证了 </span><span class="16AngsanaUPC"><span lang="EN-US" style="font-size: 9pt;">TH</span></span><span class="160pt"><span lang="EN-US" style="font-size:9.0pt;mso-ansi-language:EN-US; mso-fareast-language:EN-US;mso-bidi-language:EN-US">6213</span></span><span style="font-size:9.0pt"><o:p></o:p></span></p> </td> </tr> </tbody> </table> </div> <!--[if !supportTextWrap]--> <p><br clear="ALL" /> <!--[endif]--></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> <!-- 分类 --> <div class="blank10"></div> 分类： <a href='/bethel/type/jnc/type-1.html' target='_blank'>加工中心</a> <div class="blank30"></div> <!--自动调用自定义字段--> <div class="blank20"></div> <div class="blank30"></div> <!-- 投票 --> <script src="/index.php?case=vote&act=view&aid=1434"></script> <!-- 自定义表单开始 --> <!-- 自定义表单结束 --> <div class="blank60"></div> <!-- 上下页开始 --> <div id="page"> <strong>上一篇</strong><a href="/bethel/news/show_1433.html">复杂箱体精密复合镗铣加工中心结构设计中若干问题研究之结 论</a> <div class="blank10"></div> <strong>下一篇</strong><a 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<p>在机测量技术由于其成本低、检测效率高、无需二次装夹等优势被广泛用于零件加工测量当中，使得五轴加工中心和五轴钻攻中心，同时又兼具测量功能。在机测量系统的构成如图1所示，硬件部分主要是由高精度探头、信号接收器、机床整个本体，软件部分由机床控制系统、测量软件等组成[8]。待零件加工完成… <a href="/bethel/5-aix/show-2959.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="五轴加工中心进给系统动态误差影响因素" href="/bethel/5-aix/show-2958.html" target="_blank">五轴加工中心进给系统动态误差影响因素</a></h4> <p>加工精度是影响机床性能和产品质量的主要难题，也是制约国家精密制造能力的重要因素。本文以五轴加工中心为对象，针对提升机床精度进行了研究。并且随着科技的发展，精密的仪器和零件在生产实践中占据的分量逐渐增加，在数控机床这种精密机器精度不断提高的同时，必须控制内外界环境的随机影响因素在… <a href="/bethel/5-aix/show-2958.html" target="_blank">[了解更多]</a></p> </div> <!-- 内容列表结束 --> </div> <!-- 相关文章结束 --> <!-- 页底推荐图文产品开始 --> <hr class="featurette-divider"> <!-- 页面标题开始 --> <div class="title"> <h3 class="wow bounceInDown" data-wow-delay="0.5s"><a href="/bethel/cnc">产品中心<small></small></a></h3> <span>——</span> </div> <!-- 页面标题结束 --> <div class="container"> <div class="blank30"></div> <!-- 中部开始 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