硬质合金激光辅助二维超声切削的表面质量  

Researchon Surface Quality of Cemented Carbide in Laser Assisted Two Dimensional Ultrasonic Cutting

作　　者：张明军[1] 焦锋[1] 刘建慧[1] 史龙飞[1] ZHANG Minguin; JIAO Feng ; LIU Jianhui; SHI Longfei(School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo Henan 454003, China)

机构地区：[1]河南理工大学机械与动力工程学院

出　　处：《机械设计与研究》2018年第5期122-125,共4页Machine Design And Research

基　　金：国家自然科学基金资助项目(51075127)

摘　　要：钨钴类硬质合金作为1种典型的难加工材料,具有良好的综合性能,在此类材料的加工中,采用传统的加工方式存在刀具磨损严重、精度低、效率低等缺点,难以满足实际生产的要求。基于正交试验,采用了椭圆超声振动及激光加热复合超精密加工的方法对硬质合金激光超声辅助加工的表面质量进行了研究,分析得到了表面粗糙度受切削加工参数及激光功率的影响规律及趋势,建立了基于响应曲面法的表面粗糙度预测模型。研究表明：对于表面质量的影响程度方面,激光功率和进给速度比背吃刀量及主切削速度起的作用更大,粗糙度的值跟随激光功率和切削速度的增大先减后增,随着背吃刀量和进给速度的增加而增大。tungsten and cobalt cemented carbide is one kind of typical difficult-to-cut materials,however,the carbide products exhibit good integrated performance. As for the aspect of processing of such materials,through traditional processing methods,the disadvantages are serious tool wear,low accuracy and low efficiency causing difficulties to fulfill the industrial production. In this paper,the author conducted a hybrid method,assisting the manufacture with two-dimensional ultrasonic vibrating and laser heating. Based on the orthogonal experiment,the surface quality by the hybrid machining method is analyzed,then influence and trend of cutting parameters and laser power to surface quality are collected,surface roughness prediction model was established. The study shows： the laser heating and feed rate have significant effect on the surface quality,while cutting depth and cutting speed have little influence on the cutting surface quality. With the laser power and cutting speed increasing,the surface roughness increases and then decreases,the surface quality becomes worse when the cutting depth is increasing.

关 键 词：硬质合金 激光加热 超声振动 正交试验 回归分析 粗糙度 

分 类 号：TH16[机械工程—机械制造及自动化]