摘要
为了解决数控机床加工复杂轮廓时机床进给系统反复启停引起的加工效率低、加工质量差等问题,提出轨迹光滑转接插补控制算法。文中首先描述算法的求解过程,并对其进行了误差分析,然后建立机床伺服系统的数学模型,通过分析轨迹转接过程中伺服系统的动态响应特性,证明了控制算法的有效性。应用该算法进行实验,轨迹加工效率提高14.1%,轨迹误差小于3μm。结果表明,该算法在保证轨迹精度的前提下,通过轨迹段之间的光滑转接,实现多段轨迹的连续加工,提高了加工质量和加工效率。
When machining complex contours, the frequent starting and stoping of the machining tool feed system reduces the machining efficiency and the machining quality. A new control algorithm was developed to realize smooth transfers along a continuous segment trajectory. The control algorithm solution process was described with an error analysis. Amathematic model of a servo system with a lead screw drive was used to analyze the dynamic characteristics of the servo system in the transfer process. The results illustrate the control algorithm efficiency. A machining simulation shows that the machining efficiency is enhanced by 14.1% and the trajectory error is smaller than 3 μm which proves the feasibility of the algorithm in an actual machining process. This algorithm effectively improves machining efficiency and contour quality.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第8期1295-1299,共5页
Journal of Tsinghua University(Science and Technology)
基金
国家"八六三"高技术项目(2004AA424160)
关键词
数控系统
光滑转接
插补控制
误差分析
computer numerical control systems smooth transfer
interpolation control
error analysis
作者简介
杨开明（1970-）,男（汉）,云南,博士后.
通讯联系人：叶佩青,教授,E-mail：yepq@mail.tsinghua.edu.cn
