基于动态切削力系数的插铣加工过程稳定性研究

doi:10.3901/JME.2017.17.193

机械工程学报 ›› 2017, Vol. 53 ›› Issue (17): 193-201.doi: 10.3901/JME.2017.17.193

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基于动态切削力系数的插铣加工过程稳定性研究

岳彩旭, 高海宁, 刘献礼

哈尔滨理工大学机械动力工程学院哈尔滨 150080

收稿日期:2016-12-09 修回日期:2017-04-13 发布日期:2017-09-05
通讯作者: 岳彩旭(通信作者),男,1982年出生,博士,副教授,硕士研究生导师。主要研究方向为硬态切削理论、切削过程建模仿真及切削过程稳定性。E-mail:yuecaixu@hrbust.edu.cn
作者简介:高海宁,男,1989年出生,博士研究生。主要研究方向为切削动力学。E-mail:18804622627@163.com;刘献礼,男,1961年出生,博士,教授,博士研究生导师。主要研究方向为金属切削理论及刀具技术、数字化加工技术。E-mail:xlliu@hrbust.edu.cn
基金资助:
国家自然科学基金（51575147，51235003）和哈尔滨理工大学青年拔尖人才支持计划（201507）资助项目

Research on the Stability of the Machining Process Based on the Dynamic Cutting Force Coefficient

YUE Caixu, GAO Haining, LIU Xianli

School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080

Received:2016-12-09 Revised:2017-04-13 Published:2017-09-05

摘要/Abstract

摘要： 插铣过程中切削力系数随切削参数的改变而变化，但在切削力仿真和稳定性边界绘制过程中总假定切削力系数是不变的，这样使得预测结果误差较大。针对上述问题，以冲击式水轮机水斗材料0Cr13不锈钢插铣过程为研究对象，结合修正的插铣力模型，采用正交试验法、平均铣削力法及偏最小二乘法得到随切削参数变化的动态切削力系数模型。对模型系数标准化分析得到影响切削力系数K_t、K_r和K_a大小的最主要因素分别为进给量、径向切宽和进给量。基于动态切削力系数对插铣加工过程切削力及稳定性进行了研究，使用恒定切削力系数、动态切削力系数分别得到切削力仿真与稳定性边界，验证试验结果表明动态切削力系数的仿真精度更高，结果为冲击式水轮机水斗插铣加工工艺优化和刀具设计提供理论支持。

关键词: 插铣加工, 冲击式水轮机, 动态切削力系数, 稳定性, 铣削力

Abstract: The cutting force coefficient changes with the cutting parameters during cutting process. If the cutting force coefficient is assumed to be constant during the cutting force simulation and the stability boundary drawing process, which makes the prediction error larger. In view of the above-mentioned problems, 0Cr13 stainless steel which is the processing material of the impact bucket, is taken as the research object. On the basis of the milling force model, the dynamic cutting force coefficient model with the cutting parameters is obtained by orthogonal test, average milling force method and partial least squares method. The main factors that affect the cutting force coefficient K_t, K_r and K_a are the feed rate, the radial width and the feed rate. Based on the dynamic cutting force coefficient, the cutting force and stability of the milling process are studied. Cutting force simulation and stability boundary, which are obtained by using constant cutting force coefficient and dynamic cutting force coefficient, compared with cutting test, the simulation results show that the dynamic cutting force coefficients is more close to the actual processing results, to provide theoretical support for the optimization of Pelton turbine bucket plunge milling process.

Key words: dynamic cutting force coefficient, impulse turbine, milling force, plunge milling, stability

中图分类号:

TG506

岳彩旭, 高海宁, 刘献礼. 基于动态切削力系数的插铣加工过程稳定性研究[J]. 机械工程学报, 2017, 53(17): 193-201.

YUE Caixu, GAO Haining, LIU Xianli. Research on the Stability of the Machining Process Based on the Dynamic Cutting Force Coefficient[J]. Journal of Mechanical Engineering, 2017, 53(17): 193-201.

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基于动态切削力系数的插铣加工过程稳定性研究

Research on the Stability of the Machining Process Based on the Dynamic Cutting Force Coefficient

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