中文摘要：

在模具型腔高速铣削中,窄槽、拐角等区域加工时刀具和工件的接触角较大或突然增大,导致瞬间切削力增大,因此对其所采用的接线加工展开理论研究.首先对摆线轨迹进行接触角建模,并以型腔刀路轨迹中直线段的铣削接触角为参考控制摆线加工时的接触角,从而确定摆线相邻循环圆的最佳距离.再通过实际高速铣削加工试验,验证所选参数的有效性.最终实际高速铣削加工试验表明,该方法能有效控制摆线加工的铣削力,从而优化循环圆分布,具有良好的应用价值.

英文摘要：

In the high-speed milling of mnould cavity,when milling the narrow groove and corner region,tool and workpiece cutter engagement angle is larger or suddenly increased that lead to the milling-force increasing suddenly.So it has a research on the method of trochoidal machining.Firstly,the geometry model of cutter engagement angle in trochoidal machining is established.The cutter engagement angle in straight line machining is taken as a reference to control the cutter engagement angle of trochoidal machining to determine the most reasonable distance of the adjacent circles.And then,uses a high-speed milling experiment to verify the effectiveness of the selected parameter.Finally the high-speed milling experiment indicates that this method can effectively control the range of milling force and optimizethe distribution of circular circles,it has a good application value.