摆线型微细铣削的数值分析与实验(英文)  

Numerical Analysis and Experimental Research on Micro Milling Process with Cycloidal Tool Path

作　　者：曹自洋[1] 薛晓红[1] 李华[1] 

机构地区：[1]苏州科技学院机械工程学院,苏州215009

出　　处：《机床与液压》2013年第18期36-39,54,共5页Machine Tool & Hydraulics

基　　金：National Natural Science Foundation of China(51305286);Jiangsu Natural Science Foundation(BK2011314);Suzhou Science and Technology Projects(SYG201244)

摘　　要：微细铣削加工可以制造具有较高精度的微小型化元件。在微细铣削加工过程中,基于切削力和刀具位移来分析加工的稳定性对表征加工过程中起着重要的作用,因为刀具的磨损和表面质量依赖于加工的稳定性。建立了摆线微细铣削的瞬时切削厚度和动态切削力的表示方法,通过模态试验的方法得到了机床-刀具系统的频率响应函数,在此基础上通过频域分析的方法建立了铣削过程的稳定性叶瓣图,然后对稳定加工区和非稳定加工区进行了详细的时域仿真试验,预测了铣削加工过程中的切削力和位移,并对随轴向切削深度变化的零件表面位置误差进行了预测,以提高零件加工的几何精度。Micro mil ing operations can fabricate miniaturized components with high relative accu-racy.In micro mil ing process,the analysis of stability based on cutting force and displacement plays an important role in characterizing the machining process,as the tool wear and surface quality depend on it.In this paper,the expressions of instantaneous cutting thickness and dy-namic cutting force in micro mil ing with cycloidal tool path are developed;the stability lobe of mil-ing system is constructed through frequency-domain approach based on the machining system frequency response function obtained by modal testing.This is fol owed by a detailed time-do-main simulation predicting forces and displacements at stable and unstable machining region, and the variation in surface location error with axial location is estimated to improve the part geo-metric accuracy.

关 键 词：时域仿真 微细铣削 刀具摆线运动 

分 类 号：TG501[金属学及工艺—金属切削加工及机床]