828D系统高精度公式曲线零件加工策略  

Maching Strategy of High Precision Formula Curve Parts in 828D System

作　　者：赵科学[1,2] 刘业峰[1,2] 赵元[1,2] 陶林[1,2] 李康举[1] 陈经伟[3] Zhao Kexue;LiuYefeng;Zhao Yuan;Tao Lin;Li Kangju;Chen Jingwei(College of Mechanical and Vehicle Engineering,Shenyang Institute of Technology,Liaoning Key Laboratory of Information Physics Fusion and Intelligent Manufacturing for CNC Machine,Fushun,Liaoning 113122,China)

机构地区：[1]沈阳工学院辽宁省数控机床信息物理融合与智能制造重点实验室 [2]沈阳工学院机械与运载学院 [3]沈阳机床(集团)有限责任公司

出　　处：《工具技术》2019年第1期78-81,共4页Tool Engineering

基　　金：国家科技重大专项(2013ZX04011011);国家自然科学基金(61603262);沈阳工学院i5智能制造研究所项目(i5201701);沈阳工学院"百门课程"重点建设项目(BMKCXM201811)

摘　　要：数控车削中高精度的公式曲线加工通常使用等间距直线拟合的参数化编程。该方法在公式曲线轮廓与直线轮廓相接的临界位置加工,因临界点步长不能被整除而产生原理性误差,使刀具加工中产生过切或欠切,严重影响工件质量和使用寿命。为避免工件的过切和欠切,提出一种等间距步长参数化编程的强制赋值方法,极大提高了公式曲线的临界点加工精度,经验证,该方法正确。In NC turning,the parametric programming of equal distance straight line fitting is usually used in high precision formula curve processing. In this method,the critical position of the contour of the formula curve and the contour of the straight line is machined. Because the step of the critical point can not be rectified,the principle error is produced,which causes the over-cut or under-cut in the cutting tool processing,and seriously affects the quality and service life of the workpiece. In order to avoid over-cutting and under-cutting of workpiece,a compulsory assignment method for parametric programming with equal spacing step size is proposed in this paper. The processing accuracy of the critical point of the formula curve is greatly improved,and the method is proved to be correct.

关 键 词：高精度 非圆曲线 沈阳机床T2C 西门子828D 强制赋值 

分 类 号：TG51[金属学及工艺—金属切削加工及机床] TH165[机械工程—机械制造及自动化]