PCD微细铣磨刀具切削力建模与加工性能研究

doi:10.3901/JME.2024.19.298

机械工程学报 ›› 2024, Vol. 60 ›› Issue (19): 298-309.doi: 10.3901/JME.2024.19.298

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PCD微细铣磨刀具切削力建模与加工性能研究

杜宇超¹, 梁志强¹, 王飞², 李娟², 刘月红², 赵旭³, 苏志朋¹, 马悦¹, 陈锐¹, 王西彬¹

1. 北京理工大学机械与车辆学院北京 100081;
2. 内蒙古北方重工业集团有限公司包头 014030;
3. 西安机电信息技术研究所西安 710065)

收稿日期:2023-10-11 修回日期:2024-03-05 出版日期:2024-10-05 发布日期:2024-11-27
作者简介:杜宇超,男,1992年出生,博士。主要研究方向为微细切削与刀具制造技术。E-mail:dycfelix@163.com;梁志强(通信作者),男,1984年出生,博士,教授,博士研究生导师。主要研究方向为精密切削磨削、微细切削与刀具制造技术。E-mail:liangzhiqiang@bit.edu.cn
基金资助:
国家自然科学基金(52375400)、转化应用(D44F9A65，2B0188E1)和内蒙古重点研发计划(2022YFHH0121)资助项目。

Research on Cutting Force Modeling and Cutting Performance of PCD Micro Milling-grinding Combined Machining Tool

DU Yuchao¹, LIANG Zhiqiang¹, WANG Fei², LI Juan², LIU Yuehong², ZHAO Xu³, SU Zhipeng¹, MA Yue¹, CHEN Rui¹, WANG Xibin¹

1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081;
2. Inner Mongolia North Heavy Industry Group Co., Ltd., Baotou 014030;
3. Xi'an Institute of Electromechanical Information Technology, Xi'an 710065

Received:2023-10-11 Revised:2024-03-05 Online:2024-10-05 Published:2024-11-27

摘要/Abstract

摘要： 提出了一种0°侧刃后角的PCD微细铣磨刀具结构，构建了单刃单磨粒正交切削仿真模型，分析了其铣磨复合加工机理。建立了同时考虑切削刃剪切力和后刀面磨削力的切削力模型，根据顺铣和逆铣下刀具结构和切削参数之间的关系确定了切入、切出角的表达式和切削刃与工件的接触情况。在此基础上通过实验拟合剪切力系数与磨削力系数，实现了铣磨刀具瞬时切削力的预测，并在TC4钛合金上开展了切削力模型验证实验，验证了构建的切削力模型能够有效的预测铣磨复合加工中的切削力。进一步在硬质合金工件上开展了铣磨刀具性能测试，结果表明，相比常规结构的PCD微细铣刀，所研制的PCD微细铣磨复合刀具能够有效提升加工质量。

关键词: PCD铣磨刀具, 铣磨复合加工, 切削力模型, 刀具性能

Abstract: A PCD micro milling-grinding combined machining tool structure with 0° side edge rake angle is proposed.The simulation model of single-edge and single-abrasive orthogonal cutting is constructed, and the mechanism of milling-grinding combined machining is analyzed.A cutting force model considering cutting edge shear force and tool flank face grinding force is constructed based on the micro-element method.According to the relationship between cutting tool structure and cutting parameters under up-milling and down-milling, the expression of cutting angle and the contact between cutting edge and workpiece are determined.On this basis, the prediction of the instantaneous cutting force of the mill is realized by fitting the shear force coefficient and grinding force coefficient through experiments, and cutting force model verification experiments are carried out on titanium alloy TC4.The experimental results show that the established cutting force model can effectively predict the cutting force in milling-grinding combined machining.The milling-grinding combined machining tool performance tests are further carried out on cemented carbide workpiece.The results show that compared with conventional PCD micro end mill, the developed PCD milling-grinding combined machining tool can effectively improve machining quality.

Key words: PCD micro milling-grinding combined machining tool, milling-grinding combined machining, cutting force model, tool performance

中图分类号:

TG714

杜宇超, 梁志强, 王飞, 李娟, 刘月红, 赵旭, 苏志朋, 马悦, 陈锐, 王西彬. PCD微细铣磨刀具切削力建模与加工性能研究[J]. 机械工程学报, 2024, 60(19): 298-309.

DU Yuchao, LIANG Zhiqiang, WANG Fei, LI Juan, LIU Yuehong, ZHAO Xu, SU Zhipeng, MA Yue, CHEN Rui, WANG Xibin. Research on Cutting Force Modeling and Cutting Performance of PCD Micro Milling-grinding Combined Machining Tool[J]. Journal of Mechanical Engineering, 2024, 60(19): 298-309.

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PCD微细铣磨刀具切削力建模与加工性能研究

Research on Cutting Force Modeling and Cutting Performance of PCD Micro Milling-grinding Combined Machining Tool

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