现代制造工程Issue(11)：9-14,35,7.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
Cutting force theory and experiment of machining tungsten carbide with assistance of laser heating and ultrasonic vibration
摘要
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.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Key words
tungsten carbide/CBN tools/cutting force/laser assisted and ultrasonic elliptical vibration composite cutting分类
矿业与冶金引用本文复制引用
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,(11):9-14,35,7.基金项目
国家自然科学基金资助项目(51075127) （51075127）
