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font-size: 12pt; font-family: 宋体;">引言</span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">试切的过程也就是对</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> CAD/CAM</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">系统生成的</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt"> NC</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">程序的检验过程。传统的试切是采用塑模、</span><span style="font-size:12.0pt; mso-font-kerning:0pt"> </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">蜡模或木模在专用设备上进行的</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">需要技术人员在整个过程中进行监控。而且试切过程本身具有危险</span><span lang="EN-US" style="font-size: 12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">如刀具和夹具或工作台之间发生的碰撞、进给不合理导致的刀具破坏等。因此这种做法不但浪费人力物力</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">而且延缓生产周期</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">增加产品开发成本、</span><span style="font-size:12.0pt; mso-font-kerning:0pt"> </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">降低生产效率</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">极大地影响制造系统的性能。</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体;mso-bidi-font-family:宋体; mso-font-kerning:0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">另一方面</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">由于计算机性能的不断改善以及计算机图形学技术的迅猛发展</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">计算机仿真技术在制造系统中得到了广泛的应用。如果采用计算机上的仿真加工来替代或减少实际的试切工作</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">就可以大大缩短产品的生产周期</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">降低其制造成本</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">增加整个产品的市场竞争力。在这样的背景之下</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">虚拟加工应运而生。</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体; mso-bidi-font-family:宋体;mso-font-kerning:0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">1 </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">虚拟加工概述</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体;mso-bidi-font-family:宋体; mso-font-kerning:0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">结合目前国内外的研究</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">本文对虚拟加工作如下定义。</span><span lang="EN-US" style="font-size:12.0pt;font-family: 宋体;mso-bidi-font-family:宋体;mso-font-kerning:0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">虚拟加工是实际加工过程在计算机上的本质实现</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">[1], </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">即采用计算机仿真技术</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">对</span><span lang="EN-US" style="font-size:12.0pt; mso-bidi-font-family:宋体;mso-font-kerning:0pt"><a href="http://www.bethel-cnc.com/" target="_blank"><span lang="EN-US" style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">加工中心</span></a></span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">进行建模</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">由此在计算机上实现如车、</span><span style="font-size:12.0pt;mso-font-kerning:0pt"> </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">镗、</span><span style="font-size:12.0pt;mso-font-kerning:0pt"> </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">铣、</span><span style="font-size:12.0pt;mso-font-kerning:0pt"> </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">钻等实际产品加工的本质过程</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">为虚拟制造建立一个真实的可视化的加工环境。</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体;mso-bidi-font-family:宋体;mso-font-kerning: 0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">由此可见</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">虚拟加工虽然不是实际的加工</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">但却能实现实际加工的本质过程</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">并且可以全面逼真地反映现实的加工环境。在计算机仿真技术的支持下</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">虚拟加工可以实现实际加工过程在虚拟环境中的完全映射</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">,</span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">同时无需消耗额外的实际资源。因此可以通过在计算机上实现虚拟加工环境</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">用以仿真和评测各加工过程对产品性能和质量的影响</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">以消除设计中的不合理成分</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">增强对产品加工的预测能力和决策水平</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">提高加工质量和加工效率</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">最终提高产品的加工和制造水平。</span><span lang="EN-US" style="font-size:12.0pt;font-family: 宋体;mso-bidi-font-family:宋体;mso-font-kerning:0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">从开发实现的角度来说</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">虚拟加工系统的实现主要集中在加工过程仿真。加工过程仿真的研究一直是</span><span lang="EN-US" style="font-size: 12.0pt;mso-font-kerning:0pt">CAD/CAM</span><span style="font-size:12.0pt; font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">技术的一个研究热点。根据在</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> CAD/CAM</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">中的不同阶段</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">加工过程仿真系统可以分为</span><span lang="EN-US" style="font-size: 12.0pt;mso-font-kerning:0pt"> 3 </span><span style="font-size:12.0pt; font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">种</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">: </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">编程过程中的图形检验、</span><span style="font-size:12.0pt;mso-font-kerning:0pt"> </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">刀位驱动的切削过程图形仿真和</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt"> NC</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">驱动的加工过程仿真。在这</span><span lang="EN-US" style="font-size: 12.0pt;mso-font-kerning:0pt"> 3 </span><span style="font-size:12.0pt; font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">个方面国外都有相应的软件系统</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">如</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> IDEAS- GNC</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">中采用了第</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt"> 1 </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">种图形仿真检验方法</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">利用动态显示刀具来对整个走刀轨迹进行总体检查</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">为了方便判断</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">可灵活选择所要显示的型面图、</span><span style="font-size:12.0pt; mso-font-kerning:0pt"> </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">观察视点</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">利用窗口放大局部细节等。</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">Cimplex</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">采用第</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> 2 </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">种仿真方法</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">采用了加工件的逐步成型技术</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">技术细节还不可知</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">; Command </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">软件采用了第</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt"> 3 </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">种方法</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">利用形体定义法可检验运动中的干涉问题。</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体;mso-bidi-font-family:宋体; mso-font-kerning:0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">由于目前的实际加工制造过程中大多采用数控系统进行控制</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">而控制的输入则是</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt"> NC </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">代码</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">因此在上述</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">3 </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">种方法中</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">适用范围比较广泛的是第</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt"> 3 </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">种</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">即</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> NC </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">驱动的加工过程仿真。实际的虚拟加工软件系统则往往是以</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt"> NC</span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">驱动的加工过程仿真系统</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">即采用三维实体仿真技术</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">以</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt"> NC</span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">代码为驱动</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">数控指令翻译器对输入的</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">NC </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">代码进行语法检查、</span><span style="font-size:12.0pt;mso-font-kerning:0pt"> </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">翻译</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">; </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">根据指令生成相应的刀具扫描体</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">在指令的驱动下</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">刀具扫描体与被加工零件的几何体进行求交运算、</span><span style="font-size:12.0pt;mso-font-kerning:0pt"> </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">碰撞干涉检查、</span><span style="font-size:12.0pt;mso-font-kerning:0pt"> </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">材料切除等</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">,</span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">并生成指令执行后的中间结果。所有这些虚拟加工过程均可以在计算机屏幕上通过三维动画显示出来。指令不断执行</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">每一条指令的执行结果均可保存</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning: 0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family: 宋体;mso-font-kerning:0pt">以便查验</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"; mso-bidi-font-family:宋体;mso-font-kerning:0pt">直到所有指令执行完毕</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">虚拟加工任务结束。</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体; mso-bidi-font-family:宋体;mso-font-kerning:0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">2 </span><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">虚拟加工关键技术</span><span lang="EN-US" style="font-size:12.0pt;font-family:宋体;mso-bidi-font-family:宋体; mso-font-kerning:0pt"><o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-indent: 24pt;"><span style="font-size: 12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning:0pt">结合前文对虚拟加工内涵的分析</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt">, </span><span style="font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:宋体;mso-font-kerning: 0pt">笔者认为虚拟加工的几个主要关键技术是几何建模技术、数控代码翻译、</span><span style="font-size:12.0pt; mso-font-kerning:0pt"> </span><span 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<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="五轴线性刀路的局部能量光顺和避免方法" href="/bethel/5-aix/show-2960.html" target="_blank">五轴线性刀路的局部能量光顺和避免方法</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：１）本文建立了基于转角向量和双弦弓高的局部能量光顺算法，该方法以刀心点光顺前后最大许用偏移量作为约束，通过计算拐角处微小线段局部能量最优解，可使… <a href="/bethel/5-aix/show-2960.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> <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> <!-- 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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