基于动态磨削深度的非圆轮廓高速磨削稳定性建模与分析

doi:10.3901/JME.2021.15.264

机械工程学报 ›› 2021, Vol. 57 ›› Issue (15): 264-274.doi: 10.3901/JME.2021.15.264

• 制造工艺与装备 • 上一篇

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基于动态磨削深度的非圆轮廓高速磨削稳定性建模与分析

刘涛^1,2, 邓朝晖^1,2, 罗程耀^1,2, 吕黎曙^1,2, 李重阳^1,2, 万林林^1,2

1. 湖南科技大学难加工材料高效精密加工湖南省重点实验室湘潭 411201;
2. 湖南科技大学智能制造研究院湘潭 411201

收稿日期:2020-08-19 修回日期:2021-03-16 出版日期:2021-08-05 发布日期:2021-11-03
通讯作者: 邓朝晖(通信作者),男,1968年出生,教授,博士研究生导师。主要研究方向为高效精密智能制造,磨削稳定性分析。E-mail:edeng0080@vip.sina.com
作者简介:刘涛,男,1990年出生,博士研究生。主要研究方向为高效精密智能制造,磨削稳定性分析。E-mail:ddyxxt1@163.com
基金资助:
湖南省创新型省份建设专项经费（2020GK2003）、国家自然科学基金-浙江两化融合联合基金（U1809221）、湖南省研究生科研创新项目（CX20190792）和湖南省自然科学联合基金（2020JJ4309，2020JJ4024）资助项目。

Stability Modeling and Analysis of Non-circular High-speed Grinding with Consideration of Dynamic Grinding Depth

LIU Tao^1,2, DENG Zhaohui^1,2, LUO Chengyao^1,2, Lü Lishu^1,2, LI Zhongyang^1,2, WAN Linlin^1,2

1. Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult to Machine Material, Hunan University of Science and Technology, Xiangtan 411201;
2. Intelligent Manufacturing Institute, Hunan University of Science and Technology, Xiangtan 411201

Received:2020-08-19 Revised:2021-03-16 Online:2021-08-05 Published:2021-11-03

摘要/Abstract

摘要： 磨削颤振严重影响非圆轮廓轴类零件的磨削加工表面质量，降低其生产效率。在分析非圆轮廓磨削几何运动学特性的基础上，通过等效简化“工件-砂轮”系统为多自由度弹簧阻尼系统，将砂轮和工件的接触过程转化为物理模型，综合考虑再生效应和非圆轮廓磨削动态几何特性，推导了非圆轮廓动态磨削深度计算方法，并建立了多因素耦合的非圆轮廓磨削动力学模型。以典型非圆轮廓轴类零件-凸轮轴为例，基于试验和理论计算方法获得了磨削工艺系统模态参数和接触刚度，考虑接触刚度非线性特性绘制了磨削工艺系统稳定性叶瓣图；最后，以试验研究验证了所提出模型和方法的正确性，揭示了非圆轮廓磨削颤振稳定性机理，结果表明：考虑接触刚度的稳定性叶瓣图可更准确地预测磨削工艺系统的稳定性，在稳定区域高速磨削可以有效地提高非圆轮廓轴类零件的加工质量，不同轮廓位置的振动状态存在明显差异。

关键词: 非圆轮廓磨削, 颤振稳定性, 动力学模型, 动态磨削深度, 接触刚度, 凸轮轴

Abstract: Grinding chatter seriously affects the surface quality and reduces production efficiency of non-circular parts. Based on the analysis of geometric and kinematics characteristics of non-circular grinding, by simplified the workpiece-wheel system as a multiple degree of freedom spring damping system, and transformed the interaction between the workpiece and the grinding wheel into a physical model, dynamic grinding depth calculation method is proposed with considering regeneration effect and dynamic geometric characteristics of the non-circular grinding, the multi-factor coupling dynamic model of non-circular grinding is established. The camshaft as a sample, the modal parameters and contact stiffness of the grinding process system are obtained based on the experimental and theoretical methods, the stability lobe diagram was drawn considering the nonlinear characteristics of contact stiffness. Finally, the experiments are conducted to verified the proposed model and method, and the chatter stability mechanism of non-circular grinding was revealed. The results demonstrated that the stability lobes diagram considering the contact stiffness could predict the stability of the grinding process system accurately, high-speed grinding can effectively increase the non-circular profile shaft parts processing quality in the stable area, and vibrational state in different contour position is varied.

Key words: non-circular grinding, chatter stability, dynamical model, dynamic grinding depth, contact stiffness, camshaft

中图分类号:

TG156

刘涛, 邓朝晖, 罗程耀, 吕黎曙, 李重阳, 万林林. 基于动态磨削深度的非圆轮廓高速磨削稳定性建模与分析[J]. 机械工程学报, 2021, 57(15): 264-274.

LIU Tao, DENG Zhaohui, LUO Chengyao, Lü Lishu, LI Zhongyang, WAN Linlin. Stability Modeling and Analysis of Non-circular High-speed Grinding with Consideration of Dynamic Grinding Depth[J]. Journal of Mechanical Engineering, 2021, 57(15): 264-274.

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基于动态磨削深度的非圆轮廓高速磨削稳定性建模与分析

Stability Modeling and Analysis of Non-circular High-speed Grinding with Consideration of Dynamic Grinding Depth

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