双圆弧内齿轮车齿切削仿真及试验研究

Simulation and Experimental Research on Tooth Power Skiving Cutting of Double-circular-arc Internal Gears

针对目前双圆弧内齿轮加工难、精度差、效率低的问题,提出了一种采用车齿工艺加工双圆弧内齿轮的方法。根据车齿加工原理,梳理了刀具与工件的相对位置,建立了双圆弧内齿轮车齿加工数学模型;运用Vericut进行双圆弧齿形的成型仿真,验证了车齿加工内齿轮的可行性与准确性;利用Abaqus对车齿过程中的切削力进行仿真计算,获得了加工参数对切削力的影响规律;使用六轴数控机床完成了双圆弧内齿轮的车齿加工,螺旋线精度检测结果符合设计要求。上述研究结果拓展了双圆弧齿轮的加工工艺,提升了内齿轮加工精度和效率,为后期双圆弧内啮合及行星传动奠定了基础。

A method for machining double-circular-arc internal gears using power skiving technology is proposed to address the current problems of difficulty,poor accuracy,and low efficiency in machining double-circular-arc internal gears.Based on the principle of power skiving,the relative positions of the cutting tool and the workpiece are sorted out,and a mathematical model for double-circular-arc internal gear tooth turning is es⁃tablished.Vericut is used to simulate the formation of double-circular-arc tooth profiles,and the feasibility and accuracy of machining internal gears are verified.Abaqus is used to simulate and calculate the cutting force dur⁃ing the power skiving process,and the influence of machining parameters on the cutting force is obtained.Using a six-axis CNC machine tool,the power skiving of double-circular-arc internal gears is completed,and the tooth alignment accuracy detection meet the design requirements.This study expands the processing technology of double-circular-arc gears,improves the machining accuracy and efficiency of internal gears,and lays the foundation for future research on double-circular-arc internal meshing and planetary transmission.