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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。
Large gear teeth reciprocating inertia spindle large, it is difficult to speed up to improve efficiency. In conventional gear cutting, the gear shaper and the workpiece gear are fed at a uniform speed at a predetermined speed ratio, so that the single-stroke cutting area fluctuates greatly within one gear tooth cycle and the machining efficiency of the gear shaper can not be fully utilized. In this paper, aiming at the principle of inefficiency of conventional gear reduction machining, an optimization algorithm of high efficiency machining of large gear shaper based on variable circle feeding is established. Based on the MATLAB matrix calculation and the secondary development of CAD technology, the algorithm of precise calculation of the cutting area of gear cutting is established, and the variation of the cutting area during the conventional gear cutting process is obtained. The change rule of the cutting area is proposed and the optimization algorithm of the variable circle feeding is put forward. The rule of circular gear feeding of gear shaper and workpiece is obtained in the process of changing the circumference of feed gear, which lays the foundation for the engineering application of high efficiency gear shaper technical foundation.