刀尖微结构SPDT振动压印装置及其试验研究  

SPDT vibration imprinting device for tool tip microstructure and application

作　　者：吕俊杰 俞虹飞 任旭 冯凯 王艺蒙 LV Jun-jie;YU Hong-fei;REN Xu;FENG Kai;WANG Yi-meng(College of Mechanical Engineering,Hangzhou Dianzi University,Hangzhou 310018,China)

机构地区：[1]杭州电子科技大学机械工程学院

出　　处：《机电工程》2019年第12期1282-1285,共4页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51775153)

摘　　要：针对拉刀前刀面内凹且材质坚硬,难以实现刀尖表面微结构加工的问题,对单点金刚石刀具(SPDT)振动压印制备微结构的加工原理进行了研究,提出了一种刀尖微结构SPDT振动压印装置;利用此装置成功在试验拉刀前刀面制备了3排×30列,最大圆截面直径为30μm、深度为10μm的"圆坑型"微结构;并将此试验拉刀与常规拉刀进行了对比拉削试验,研究了刀尖微结构对拉削负载的影响。研究结果表明:在稳定拉削阶段,相较于常规拉刀,试验拉刀的拉削负载均值、最大值、最小值降幅分别达到了5.20%、5.04%和12.33%,说明在拉刀前刀面制备微结构后,可以有效降低拉削负载,提高拉削性能,改善现有加工技术。Aiming at the problem that the front face of broach is concave and hard,it is difficult to realize the microstructure machining of tool tip surface,the machining principle of single point diamond tool(SPDT)vibrating press printing microstructure was studied.A tool tip microstructure SPDT vibratory imprinting device was proposed.3 rows and 30 columns of round pit microstructure was successfully prepared on the front of the test broach by this device.Their maximum circular section diameter was 30μm and the depth was 10μm.And the test broach was compared with the conventional broach.The effect of tool tip microstructure on broaching load was studied.The results show that in the stable broaching stage,compared with the conventional broach,the average broaching load,maximum and minimum broaching load of the test broach respectively is achieved by 5.20%,5.04%and 12.33%.It shows that the broaching load can be effectively reduced after the microstructure is prepared at the front of the broach,which is helpful to improve the broaching performance and the existing machining technology.

关 键 词：内凹型表面 刀尖微结构 单点金刚石刀具 振动压印 

分 类 号：TH161[机械工程—机械制造及自动化] TG156[金属学及工艺—热处理]