激光超声复合加工硬质合金的切削力理论与试验

doi:10.16731/j.cnki.1671-3133.2017.11.003

现代制造工程 ›› 2017, Vol. 446 ›› Issue (11): 9-14.doi: 10.16731/j.cnki.1671-3133.2017.11.003

激光超声复合加工硬质合金的切削力理论与试验

段鹏, 焦锋, 赵波, 牛赢

河南理工大学机械与动力工程学院,焦作 454000

收稿日期:2016-01-20 出版日期:2017-11-20 发布日期:1900-01-01
作者简介:段鹏,副教授,博士研究生,主要研究方向为精密与超精密加工、特种加工。焦锋,通讯作者,教授,博士。 E-mail:duanpsj@hpu.edu.cn;jiaofeng@hpu.edu.cn
基金资助:
国家自然科学基金资助项目(51075127)

Cutting force theory and experiment of machining tungsten carbide with assistance of laser heating and ultrasonic vibration

Duan Peng, Jiao Feng, Zhao Bo, Niu Ying

School of Mechanical and Power Engineering,Henan Polytechnic University,Jiaozuo 454000,Henan,China

Received:2016-01-20 Online:2017-11-20 Published:1900-01-01

摘要/Abstract

摘要： 为了实现硬质合金的延性域加工,研究激光加热与超声椭圆振动复合切削条件下,使用CBN(立方氮化硼)刀具对硬质合金进行精密加工的切削特性。分析硬质合金在普通切削、超声椭圆振动切削与激光超声复合切削三种切削方式下的切削力变化特征,建立激光超声复合切削的切削力理论模型,采用超精密车床与YAG激光器、自主研发的超声振动装置等辅助设备,试验研究激光超声复合精密加工硬质合金的切削特性。通过一系列的对比试验,分析切削参数,如切削速度、切削厚度对切削力的影响规律。理论模型与试验结果表明,由于硬质合金的软化和断续切削,使得激光超声复合辅助加工显著地降低了切削力,硬质合金的切削加工性能得到显著改善,通过工艺参数的优化,可以实现硬质合金的精密加工。

关键词: 硬质合金, CBN刀具, 切削力, 激光超声椭圆振动复合切削

Abstract: In order to realize ductile-regime machining for tungsten carbide as optical die material,it was machined using Cubic Boron Nitride (CBN) tools under the assistance of laser heating and ultrasonic vibration.The cutting force variation characteristics in the three cutting modes,such as common cutting,ultrasonic elliptical vibration cutting,laser assisted and ultrasonic elliptical vibration composite cutting,are analyzed and the model of cutting force of tungsten carbide in laser assisted and ultrasonic elliptical vibration composite cutting is established.The experiments were carried out on an ultra-precision lathe assisted by YAG laser equipment and self-developed ultrasonic vibration device.The influences of cutting parameters,such as cutting speed and cutting depth,on cutting force were studied through a series of contrast experiments.The theoretical model and experimental results show that,because of the softening of the workpiece material and the interrupted cutting,the composite assistance of laser and ultrasonic vibration can largely reduce the cutting force while machinability of tungsten carbide can be remarkably improved.Furthermore,precision machining of tungsten carbide can be realized under certain optimized technological parameters.

Key words: tungsten carbide, CBN tools, cutting force, laser assisted and ultrasonic elliptical vibration composite cutting

中图分类号:

TG663

段鹏, 焦锋, 赵波, 牛赢. 激光超声复合加工硬质合金的切削力理论与试验[J]. 现代制造工程, 2017, 446(11): 9-14.

Duan Peng, Jiao Feng, Zhao Bo, Niu Ying. Cutting force theory and experiment of machining tungsten carbide with assistance of laser heating and ultrasonic vibration[J]. Modern Manufacturing Engineering, 2017, 446(11): 9-14.

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激光超声复合加工硬质合金的切削力理论与试验

Cutting force theory and experiment of machining tungsten carbide with assistance of laser heating and ultrasonic vibration

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