一种被动柔顺控制的平面研磨力/位控制方法  

A Passive Compliant Position/Force Control Method for Plane Grinding

作　　者：闫雯[1] 黄玉美[2] 林文周 穆卫谊 Yan Wen;Huang Yumei;Lin Wenzhou;Mu Weiyi(School of Art & Design, Xi′an University of Technology, Xi′an 710054, China;School of Mechanical and Precision Instrument Engineering, Xi′an University of Technology, Xi′an 710048, China;Institute of Water Resources and Hydro-electric Engineering, Xi′an University of Technology, Xi′an 710048, China)

机构地区：[1]西安理工大学艺术与设计学院,西安710054 [2]西安理工大学机械与精密仪器工程学院,西安710048 [3]西安理工大学水利水电学院,西安710048

出　　处：《机械科学与技术》2019年第6期892-896,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：陕西省教育厅专项科研计划(人文社科类)项目(16JK1517);西安理工大学校博士启动金资助项目(106-451115001);教育部人文社科青年项目(14YJCZH199)资助

摘　　要：针对平面研磨的加工特点和工艺要求,提出了一种基于被动柔顺控制的立式数控平面研磨机力/位控制方法。通过分析被动柔顺控制原理,建立了平面研磨加工的阻抗模型,进而得出能够使研磨加工处于动态平衡状态的工艺参数组,消除平面研磨中力与位的相互影响。试验结果表明该方法能够稳定控制研磨压力,定位精度良好,被加工件获得了较好的表面粗糙度,能够满足一般研磨的加工要求。与常用立式研磨机的控制方法相比,该方法能够在位置伺服状态下,避免使用专门的研磨压力控制设备,简化机床硬件和操作流程,提高加工效率,降低生产成本,具有良好的推广和应用前景。A control scheme is put forward for vertical CNC (Computer numerical control) plane grinding machine based on passive compliant control, aiming at some technology characteristics and technological requirements of plane grinding. An impedance models for grinding is established by analyzing the principle of passive compliance control. According to the impedance model, a group of process parameters are derived that can make the grinding process in a dynamic balance. The results showed that the control of pressure is very stable, the positioning accuracy is good, and the surface roughness of workpiece is better. The results can satisfy the general grinding requests. Comparing with the common control methods of vertical grinding machine, the scheme can be used in position servo state and get rid of the special grinding pressure control equipment. It has a good prospect of popularization and application for simplifying the hardware equipment and operation process, improving the processing efficiency and reducing the production cost.

关 键 词：力/位控制 柔顺控制 阻抗模型 压力控制 

分 类 号：TH39[机械工程—机械制造及自动化]