关键词: 成形磨齿, 齿轮偏心, 精度分析, 补偿方法, 数控系统

Abstract: To reduce the cylindrical gear eccentric error in the process of form grinding,a geometric model for grinding error was proposed based on analyzing the relationship between gear eccentric error and form grinding accuracy.The mathematic model of tooth error was established by the coordinate transformations between gear and machine.According to the gear standard ISO1328—1:1995,the rules were obtained by changing the gear eccentric error with respect to tooth profile error,lead error and pitch error,respectively,as well as the sensitivity between gear parameters and tooth errors.The method was raised to correct the tooth error by radial error compensation,radial and axis error compensation.The experiment performed by a CNC form grinding machine of SKMC3000/20 verified the validity of the method,and the result showed that the eccentric error in form grinding could be corrected effectively by the method.

Key words: form grinding, gear eccentricity, accuracy analysis, compensation method, numerical control system