电火花加工放电状态的混合控制

传统电火花成形加工采用定参数加工的方式,导致机床加工效率低下。原因在于进行传统的成形加工时,考虑到深度越大加工排屑越困难等因素,加工参数一般按最大深度处的加工状态来设置。研究提出了一种采用混合控制的变抬刀参数电火花成形加工方法,通过用自适应控制理论对放电时间进行实时控制,并以有效放电频率变化为依据,随深度增大控制抬刀高度,最后通过实验验证了控制方法的可行性。

Hybrid Control of Discharging State During EDM

Traditional EDM adopts unaltered processing parameters which lead to low efficiency of manufacturing.The reason is that the parameters are set according to the machining state in final depth of workpiece considering the difficulty of releasing debris off the gap.A new EDM control system which directly regulates the electrode down time and jump amount has been developed in this study.The control strategy includes both adaptive control of down time and PID control of jump amount respectively based on the dele...