非圆齿轮电火花线切割加工工艺参数对齿廓误差的影响

Influence of electrical parameters on tooth profile error for of non-circular gear WEDM

线切割加工非圆齿轮时电参数是影响齿廓误差的关键因素之一.设计正交试验,分别采用非圆齿轮齿根、齿廓中部和齿顶的最大齿廓误差对线切割加工非圆齿轮进行分析.通过方差分析方法和主效应分析法,研究线切割加工电参数峰值电流、脉冲宽度、脉冲间隔和跟踪对非圆齿轮齿根、齿廓中部和齿顶的齿廓误差影响规律.同时,对齿廓误差、加工时长和工艺参数进行回归分析,并建立回归模型,基于灰狼优化算法对回归模型进行多目标优化求解.通过研究结果可以得出线切割加工非圆齿轮齿廓不同部位的最优参数组合,可为实际加工提供参考.

When WEDM machines non-circular gears,electrical parameters are recognized as pivotal factors affecting the tooth profile error of non-circular gears.Orthogonal experiments were designed to analyze WEDM non-circular gears by using the maximum tooth profile errors at the gear tooth root,tooth profile middle and tooth top respectively.Through variance analysis and main effect analysis methods,the influence law of WEDM electrical parameters,including peak current,pulse width,pulse interval,and tracking,on the tooth profile error of non-circular gears at the tooth root,tooth profile middle,and tooth top was studied.At the same time,regression analysis was performed on the tooth profile errors,machining duration,and process parameters to establish regression models.The multi-objective optimization of the regression models was conducted using the Grey Wolf Optimization algorithm.The results of this study obtain the optimal parameter combination for different parts of the WEDM non-circular gear tooth profile,which can provide a reference for actual processing.