步进驱动CNC系统的直接函数速度控制法  

The direct feedrate-controlled method for machining functional curves in stepping drive CNC system

作　　者：张爱华[1] 朱亮[1] 

机构地区：[1]甘肃工业大学电信学院,甘肃兰州730050

出　　处：《组合机床与自动化加工技术》2001年第1期30-32,48,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：甘肃省自然科学基金!项目资助 (ZS981-A2 2 -0 2 5 -G)

摘　　要：提出一种能实现进给速度控制的函数曲线直接生成的新方法及实现方案 ,由被加工函数曲线方程推导出各轴向速度控制模型 ,对各轴向步进电机速度直接控制 ,实现加工点的给定合成进给速度和运动轨迹 ,同时较好地解决了曲线精确步进与数控系统容量的矛盾。仿真实验结果验证了该控制方法的正确性和可行性。This paper presents a new method for machining functional curves to reach the specified feedrate,and derive the speed-controlled models from the curve representation function.With the proposed method the speed of stepping motor of every axes can be controlled directly,so the motion speed becomes smooth,which is of great importance of keeping stepping motor rotating steadily from missing steps.Meanwhile the conflict between part precision and CNC machine's memory is resolved.The motion accuracy and feasibility of the proposed method have been verified with a provided intersecting curve example.

关 键 词：步进电机 进给速度 函数曲线 数控系统 速度控制 

分 类 号：TG659.023[金属学及工艺—金属切削加工及机床]