Real time compensation technology for thermal error of lead screw drive system of CNC machine tool

doi:10.13196/j.cims.2022.08.017

Computer Integrated Manufacturing System ›› 2022, Vol. 28 ›› Issue (8): 2460-2471.DOI: 10.13196/j.cims.2022.08.017

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Real time compensation technology for thermal error of lead screw drive system of CNC machine tool

DENG Yonghong¹,LIU Jian²⁺,LI Dong³

1.Sichuan Institute of Industrial Big-Data Applications
2.School of Automobile and Transportation,Chengdu Technological University
3.Department of Mechanical and Electrical Engineering,Liaocheng University Dongchang College

Online:2022-08-31 Published:2022-09-07
Supported by:
Project supported by the National Key Research and Development Program,China (No.2018YFB1701502),and the Innovation Fund for Industry-university Research of Chinese Universities,China(No.2020ITA03041).

数控机床丝杠传动系统热误差实时补偿技术

邓永红¹,刘剑²⁺,李栋³

1.四川省产业大数据应用研究院
2.成都工业学院汽车与交通学院
3.聊城大学东昌学院机电工程系

基金资助:
国家重点研发计划资助项目(2018YFB1701502);中国高校产学研创新基金资助项目 (2020ITA03041)。

Abstract

Abstract: To reduce the positioning error caused by thermal deformation of the lead screw drive system of CNC machine tools,the lead screw drive system was divided into several segments,and the thermal compensation device of the lead screw drive system was developed.The thermal error of each segment of the lead screw was detected by the device,and the thermal deformation characteristics of each segment of the lead screw were obtained.The data of characteristics was stored in the numerical control system,which was taken as the compensation parameter.The thermal compensation of the machine tool table running to each segment of the lead screw was carried out in real time.Taking the semi closed-loop CNC horizontal machining center as the experimental object,the segmented thermal deformation detection and compensation experiments are carried out for each axis.The results showed that the positioning error caused by the thermal deformation of each axis could be effectively reduced by using the compensation technology,and the actual compensation effect is good.

Key words: CNC machine tool, thermal error, screw feed drive system, real time compensation

摘要： 为了降低数控机床丝杠传动系统因热变形引起的定位误差,对丝杠传动系统进行分段,将其划分为若干段,开发了丝杠传动系统热补偿装置,利用该装置首先对丝杠各段的热误差进行检测,获得丝杠各段的热变形特性,将其数据存储于数控系统中,以此为补偿参数,对机床工作台运行到丝杠各个段时,实时进行所在段的热补偿。并以半闭环数控卧式加工中心为实验对象,对各轴进行分段化热变形检测和补偿实验,实验结果表明该补偿技术具有较好的实际补偿效果,有效地减小了各轴热变形引起的定位误差。

关键词: 数控机床, 热误差, 丝杠传动, 实时补偿

CLC Number:

TG659

DENG Yonghong, LIU Jian, LI Dong. Real time compensation technology for thermal error of lead screw drive system of CNC machine tool[J]. Computer Integrated Manufacturing System, 2022, 28(8): 2460-2471.

邓永红, 刘剑, 李栋. 数控机床丝杠传动系统热误差实时补偿技术[J]. 计算机集成制造系统, 2022, 28(8): 2460-2471.

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Real time compensation technology for thermal error of lead screw drive system of CNC machine tool

数控机床丝杠传动系统热误差实时补偿技术

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