电火花线切割加工非圆齿轮表面完整性研究  

Research on the surface integrity of noncircular gears machined by wire EDM

作　　者：王亚洲[1] 陈柏昕 马晓文 Wang Yazhou;Chen Baixin;Ma Xiaowen(College of Mechanical and Electrical Engineering,Lanzhou University of Technology,Gansu Lanzhou,730050,China)

机构地区：[1]兰州理工大学机电工程学院,甘肃兰州730050

出　　处：《机械设计与制造工程》2025年第3期37-42,共6页Machine Design and Manufacturing Engineering

基　　金：国防基础科研计划(JCKY2019427D002)。

摘　　要：随着表面完整性概念的不断完善,仅使用表面粗糙度作为非圆齿轮表面质量的评价标准已经不能满足实际需要。以快走丝电火花线切割机床为试验平台,对电火花线切割加工非圆齿轮进行正交试验,以参数峰值电流、脉冲宽度、脉冲间隔和跟踪为影响因素,以表面粗糙度(Ra)、表面残余应力(σ)和表面显微硬度(μh)作为加工表面完整性评价指标,探究参数对非圆齿轮表面完整性的影响规律。运用熵权法对试验数据进行合理评价,获得综合指标最优的参数组合。试验结果表明,在参数值为峰值电流3 A、脉冲宽度8μs、脉冲间隔7μs和跟踪为5挡时,可以获得最优的非圆齿轮表面完整性。With the continuous development of the concept of surface integrity,only using the surface roughness Ra as the evaluation standard of the surface quality of non-circular gears can no longer meet the actual needs.An orthogonal test design is carried out for non-circular gears processed by wire electric discharge cutting,and a fast wire electric discharge machine tool is selected for the test.Taking peak current,pulse-on time,pulse-off time,and tracking as the influencing factors,the surface integrity evaluation standard data set including surface roughness(Ra),surface residual stress(σ)and surface microhardness(μh)is used as the evaluation index,which explores the influence of wire electric discharge cutting on the surface integrity of non-circular gears.And the entropy weight method is used to evaluate the test data reasonably,select the parameter combination with the best comprehensive index.The results show that when the parameter values are the peak current of 3 A,the pulse-on time of 8μs,the pulse-off time of 7μs and the tracking is the fifth gear,the best non-circular gear surface integrity can be obtained compared with the comprehensive evaluation.

关 键 词：电火花线切割 表面完整性 非圆齿轮 熵权法 

分 类 号：TG484[金属学及工艺—焊接]