摘要
为了提升电火花加工系统的性能,开发出基于PC平台、能够实现高速复杂抬刀、多轴联动摇动加工的电火花成形加工数控系统。在中心抬刀模式下,加入摇动半径分别为30μm、60μm、90μm的摇动模式,对比了不同模式下的试验结果。在90μm摇动模式下,对比了中心抬刀与非中心抬刀下的试验结果。结果表明:随着摇动半径的增大,加工时间变长、加工蚀除率下降、加工后孔的直径和深度变大但孔的直径偏差变小、底部圆角半径变小、电极损耗率下降,但表面粗糙度基本相同;中心抬刀会延长加工时间、降低加工蚀除率、减小孔直径并降低孔的直径误差、减小电极损耗率,对底部圆角直径、加工深度、表面粗糙度的影响不大。
In order to improve the performance of electrical discharge machining(EDM)system,numerical control system of EDM was developed via PC platform.The cutting tool can be raised with high speed,and the axises can be sway machined under linkage control.In this paper,the cutting tool was set under center lifting mode,and the sway radiuses were set at 30μm,60μm,and 90μm,respectively.Then,the experimental results under different modes were compared.Setting the sway radius at 90μm,the experimental results with and without cutting-tool center lifting mode were compared.The sway radiuses results show that,with the increasing of sway radius,the processing time extends and the machining etching rate decreases.Deviation of diameters and radius of bottom fillet decreases,although diameter and depth of the holes increased after machining.Despite the changes in sway radius,the surface roughness was basically the same and electrode loss rate decreased with the increasing of sway radius.Under the cutting-tool center lifting mode,efficiently,machining etching rate,electrode loss rate,diameters and deviation of diameters decrease.Radius of bottom fillet,machining depth and surface roughness was basically the same.
作者
李殿新
刘建勇
张慧杰
杨晓宇
LI Dianxin;LIU Jianyong;ZHANG Huijie;YANG Xiaoyu(School of Mechanical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China)
出处
《机械科学与技术》
CSCD
北大核心
2024年第2期232-237,共6页
Mechanical Science and Technology for Aerospace Engineering
基金
北京市科技新星计划(20230484429)
北京石油化工学院致远科研基金项目(2023003)。
