摘要
数控机床滚珠丝杠的热误差会直接形成位置误差,破坏定位精度。文章针对滚珠丝杠进给系统热误差进行了理论分析,计算了滚珠丝杠系统的主要产热部件的发热量,温升及丝杠的轴向热误差;并开发了检测系统,现场检测了滚珠丝杠系统的主要部件温度和丝杠轴向热误差。理论计算模型与实际测量的数值相差不大,从而相互验证了理论数学模型分析与该检测方法的正确性。
In machine tools such as numerical control machines, thermal error in the ball screw induces a di-rect position error, adversely affecting the accuracy of positioning. In this paper, we theoretically analysis thermal error of the ball screw servo feed system , calculate the heat generation of key components of the feed system and the thermal error of screw shaft at axial term though mathematical model. We explore a sys-tem to measure thermal error and temperature of the system. Comparing the results of experiments and the theoretical mathematical model shows that it verifying correction of this method.
出处
《组合机床与自动化加工技术》
北大核心
2014年第12期77-79,83,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家科技重大专项(2013ZX04013-011)
关键词
滚珠丝杠
热误差
检测系统
ball screw
thermal error
measurement system
