【摘要】 大型插齿主轴往复惯量大,难以通过高速化来提高效率。常规插齿加工中,插齿刀和工件齿轮按预定速比匀速圆周进给,使得单个冲程切削面积在一个插齿周期内大幅波动,不能充分利用插齿机的加工效能。文中针对常规插齿加工这一原理性低效问题,建立了基于变圆周进给的大型插齿机等切面面积高效加工优化算法。应用齿轮啮合理论建立了插齿刀模型;基于MATLAB矩阵计算与CAD二次开发技术,构建了插齿加工切削面积精确计算的算法,获得了常规插齿加工过程中切削面积的变化规律;通过分析切削面积变化规律,提出了变圆周进给的优化算法,得到了变圆周进给插齿加工中插齿刀与工件齿轮圆周进给规律,为变圆周进给高效插齿加工的工程应用奠定了技术基础。更多还原

【Abstract】 Since the great inertia of the reciprocating spindle of large gear shapers, it is not suitable to improve the cutting efficiency of the large gear shapers by increasing the reciprocating speed of the spindle. In the conventional gear shaping process, the pinion cutter and the gear work piece rotate uniformly with a given gear ratio, which causes a great variation of the cutting area per stroke in cutting tooth spaces and low processing efficiency. To overcome such shortages, an optimization algorithm is put forward for the variable rotary feed rate of large gear shapers in the efficient gear shaping by homogenizing the cutting area per stroke to a specific target value. The algorithm consists of pinion cuttermodeling according to the mesh theory, numerical simulation of the gear shaping process and calculation of the cutting area by redevelopment of Auto CAD and MATLAB, and cutting area homogenization to the target value. The algorithm is fundamental to the engineering application of the variablerotary feed rate based efficient gear shaping method.更多还原