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言</span></p> <p class="NewStyle19" style="margin-left: 0pt; text-indent: 18pt; line-height: 21.85pt;"><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">随着我国数控机床产业的高速发展，我国在高精度数控机床的研发与制造方面有 了很大的进步。根据研宄院发布的《中国数控机床行业市场需求预测与投资战略规划 分析报告前瞻》中明确指出了我国在数控技术有了突破性的进展，在参考外国数控技 术的基础上，通过自主研发形成了属于我国特色的数控技术：包括理论基础、研究开 发、应用技术、数控系统及工程化和经营管理队伍等，尤其在高档数控装置技术开发 和生产应用这俩方面取得的进步最大，这些技术和产品己经广泛应用于航空航天、汽 车和船舶等一些重工业领域。近几年，为了提高我国数控机床的整体发展水平，除了 引进国外高档数控机床和我国自主研发的高档数控机床外，对中低档的数控机床的改 造需求量也在增大，机床的改造经过这几年的发展逐步形成了一个产业，既在原有数 控机床构造基础上对机械结构、电气系统或伺服系统进行适当的改造，使机床的整体性 能得到优化来提高中低档数控机床的精度。</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;"><o:p></o:p></span></p> <p class="NewStyle19" style="margin-left: 0pt; text-indent: 18pt; line-height: 21.85pt;"><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">爬行是数控机床普遍存在的问题，改善了爬行就能够有效的提高数控机床的精度等 级。从上世纪五十年代左右到现在，国内外许多专家和学者对爬行现象做了大量的理论 研宄和实验，针对不同的简化物理模型，提出了多种导致爬行的原因及解决措施，大部 分的观点认为摩擦是导致爬行的主要因素，但是并未得出一致的论断，对于产生爬行现 象的各个因素之间的明确关系也没有一个比较确切的说法。</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;"><o:p></o:p></span></p> <p class="NewStyle19" style="margin-left: 0pt; text-indent: 18pt; line-height: 21.85pt;"><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">本文根据数控机床进给系统的简易物理模型，综合比较了各个爬行因子对数控机床 爬行的影响。通过给模型外加振动源来分析它对爬行的影响可以看出，由于爬行现象产 生的速度波动是无规律的，故外加理想振动源来耦合机床在低速行进时产生的振动是非 常困难的。经过多次调整外加振动源的频率和幅值，将实验数据反复进行对比分析，发 现外加振动源对爬行有一定的改善作用，但完全消除爬行仍存在一些困难，因为本身在 </span><span class="16" style="font-family: Georgia; letter-spacing: 0.5pt; font-size: 10.5pt;">ADAMS</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">中建立的机械进给爬行系统模型与机床在实际环境中进行工作还是有一定的误 差，而且由于外加的是正弦力和正弦振动，也必须要考虑到可能会出现机床运动更加不 稳定的情况。</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;"><o:p></o:p></span></p> <p class="NewStyle19" style="margin-left: 0pt; text-indent: 18pt; line-height: 21.85pt;"><span class="16" style="font-family: Georgia; letter-spacing: 0.5pt; font-size: 10.5pt;">PID</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">控制器最早作为实用化的控制器已有近百年历史，</span><span class="16" style="font-family: Georgia; letter-spacing: 0.5pt; font-size: 10.5pt;">PID</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">控制器操作简单易懂， 因其使用不需要精确的系统模型而成为工业上应用最为广泛的控制器。在爬行的 </span><span class="16" style="font-family: Georgia; letter-spacing: 0.5pt; font-size: 10.5pt;">ADAMS</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">仿真模型工作台上加入</span><span class="16" style="font-family: Georgia; letter-spacing: 0.5pt; font-size: 10.5pt;">PID</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">控制系统，经过反复模拟仿真，整定增益参数，确 定最优参数后，确定加入</span><span class="16" style="font-family: Georgia; letter-spacing: 0.5pt; font-size: 10.5pt;">PID</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">控制系统能够有效控制爬行。在加入振动的模型上进一步 加入</span><span class="16" style="font-family: Georgia; letter-spacing: 0.5pt; font-size: 10.5pt;">PID</span><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;">控制时，真正做到了在低速情况下改善爬行。</span></p> <p class="NewStyle19" style="margin-left: 0pt; text-indent: 18pt; line-height: 21.85pt;"> </p> <p class="NewStyle19" style="margin-left: 0pt; text-indent: 18pt; line-height: 21.85pt;"><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“振动对数控机床进给系统爬行的影响”，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="NewStyle19" style="margin-left: 0pt; text-indent: 18pt; line-height: 21.85pt;"><span style="font-family: 宋体; letter-spacing: 0pt; font-size: 11pt;"><o:p></o:p></span></p></div> <div class="blank30"></div> <!-- tag --> <div class="blank10"></div> 标签： <a 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