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<tbody> <tr> <td valign="top" align="left" height="804" style="padding-top:0cm;padding-right: 0cm;padding-bottom:0cm;padding-left:0cm"> <p class="620" style="margin-top:0cm;margin-right:320.0pt;margin-bottom:0cm; margin-left:0cm;margin-bottom:.0001pt;line-height:31.9pt;mso-line-height-rule: exactly;background:transparent;mso-element:frame;mso-element-frame-width: 482.15pt;mso-element-frame-height:602.85pt;mso-element-wrap:none;mso-element-anchor-vertical: page;mso-element-anchor-horizontal:page;mso-element-left:66.35pt;mso-element-top: 147.05pt;mso-height-rule:exactly"><span lang="EN-US">1.1</span>课题背景和研究意义 <span lang="EN-US">1.1.1</span>课题背景</p> <p class="20" style="margin-bottom:9.55pt;text-align:justify;text-justify:inter-ideograph; text-indent:28.0pt;line-height:20.15pt;mso-line-height-rule:exactly; background:transparent;mso-element:frame;mso-element-frame-width:482.15pt; mso-element-frame-height:602.85pt;mso-element-wrap:none;mso-element-anchor-vertical: page;mso-element-anchor-horizontal:page;mso-element-left:66.35pt;mso-element-top: 147.05pt;mso-height-rule:exactly">本文的研究课题来自国家“高档数控机床与基础制造装备”科技重大专项课题“锡 柴重型柴油发动机缸体、缸盖柔性加工生产线示范工程”的子课题“机床精度稳定性和 可靠性技术研究”。主要希望以柴油发动机缸体、缸盖生产线中关键加工中心为研究对 象，对其结构性能和加工特性进行研究，最终提高示范工程中机床的结构性能和精度稳 定性能力。</p> <p class="20" align="left" style="margin-bottom: 5.4pt; text-indent: 0cm; line-height: 12pt; background: transparent;"><span lang="EN-US">1.1.2</span>课题研究的意义</p> <p class="20" style="text-align:justify;text-justify:inter-ideograph; text-indent:28.0pt;background:transparent;mso-element:frame;mso-element-frame-width: 482.15pt;mso-element-frame-height:602.85pt;mso-element-wrap:none;mso-element-anchor-vertical: page;mso-element-anchor-horizontal:page;mso-element-left:66.35pt;mso-element-top: 147.05pt;mso-height-rule:exactly">机床是装备制造业的工作母机，实现装备制造业的现代化，取决于我国的机床发展 水平，振兴装备制造业必须要振兴机床工业，国家战略地位和国家综合国力水平的提高 也离不开机床行业的大力发展。</p> <p class="20" style="text-align:justify;text-justify:inter-ideograph; text-indent:28.0pt;background:transparent;mso-element:frame;mso-element-frame-width: 482.15pt;mso-element-frame-height:602.85pt;mso-element-wrap:none;mso-element-anchor-vertical: page;mso-element-anchor-horizontal:page;mso-element-left:66.35pt;mso-element-top: 147.05pt;mso-height-rule:exactly">作为机床中自动化程度、技术集成程度和制造难度较髙的产品，高速卧式加工中心 是汽车、精密机械和航空航天等领域必备的关键设备。而高速卧式加工中心的加工精度 稳定性技术直接关系到生产实际，对于提高我国装备制造业技术水平具有十分重要的作 用。</p> <p class="20" style="text-align:justify;text-justify:inter-ideograph; text-indent:28.0pt;background:transparent;mso-element:frame;mso-element-frame-width: 482.15pt;mso-element-frame-height:602.85pt;mso-element-wrap:none;mso-element-anchor-vertical: page;mso-element-anchor-horizontal:page;mso-element-left:66.35pt;mso-element-top: 147.05pt;mso-height-rule:exactly">特别是对于汽车行业来说，我国已成为第一汽车生产大国，但并非生产强国，尤其 在汽车研发核心技术和制造技术上与国外相比有较大差距。加工设备方面，我国柴油发 动机的缸体、缸盖的加工普遍釆用刚性自动线的形式，而国外多采用柔性生产系统。国 内高档发动机生产厂家柴油机缸体、缸盖的加工也多采用进口专用设备、加工中心或进 口的自动线，进口设备价格高、消耗大量外汇，同时也使得国产高档数控机床市场空间 很小。研究开发高效、精密重型柴油发动机缸体、缸盖柔性自动线，替代进口产品，已 成为国内重型汽车行业的必须解决的问题。而其中，加工中心作为柔性制造系统的基础 担负着整条线相当多的关键加工内容，其加工精度的稳定性问题是关系到整条生产线能 否顺利投产和加工效率的一个重大问题。</p> <p class="20" style="text-align:justify;text-justify:inter-ideograph; text-indent:28.0pt;background:transparent;mso-element:frame;mso-element-frame-width: 482.15pt;mso-element-frame-height:602.85pt;mso-element-wrap:none;mso-element-anchor-vertical: page;mso-element-anchor-horizontal:page;mso-element-left:66.35pt;mso-element-top: 147.05pt;mso-height-rule:exactly">通过研究该生产线所用到的卧式加工中心的结构优化和加工特性分析技术，提高加 工中心在使用过程中的精度稳定性能力，使其不仅具有高柔性和高效率，还具有较高的 加工精度稳定性和设备利用率，充分发挥生产线批量生产的优势，积极推动示范工程向 着高效、高质和高技术方向前进。</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 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