等前角剐齿刀设计计算方法

发布时间：2018-06-25 09:22

本文选题：齿轮刀具 + 剐齿刀设计　；参考：《机械科学与技术》2017年12期

【摘要】：针对目前剐齿加工生产中加工工件表面质量差,左右齿面加工精度不一致的问题,提出了一种等前角剐齿刀的设计计算方法。根据待加工工件齿面的几何特征和剐齿加工的运动关系,基于曲面共轭原理,求取工件齿面共轭面;选择球面作为初始前刀面,以无理论刃形误差为目标,采用齿面共轭面与初始前刀面的交线作为切削刃;根据切削前角一致性原则对初始前刀面进行再设计,沿切削刃构造前刀面;通过模拟刃磨,求取一系列无理论刃形误差的切削刃,依次构造后刀面,最终获得完整的具有相等切削前角的剐齿刀具;通过计算实例验证该设计计算方法的可行性和有效性。
[Abstract]:In order to solve the problem of poor surface quality and inconsistent machining precision of the left and right tooth surface, a design and calculation method of the equal front angle cutter is put forward. According to the geometric characteristics of tooth surface of workpiece to be machined and the motion relation of tooth cutting, based on the principle of surface conjugation, the conjugate surface of tooth surface of workpiece is obtained, and the spherical surface is chosen as the initial tool face, and the target is no theoretical edge error. The intersection line between the conjugate surface of the tooth surface and the initial front face is used as the cutting edge. According to the principle of the consistency of the cutting front angle, the initial front cutter face is redesigned, and the front cutter face is constructed along the cutting edge. A series of cutting edges with no theoretical edge error are obtained, and the rear cutting face is constructed in turn. Finally, a complete cutting tool with equal cutting front angle is obtained, and the feasibility and effectiveness of the design method are verified by a calculation example.
【作者单位】：天津大学机构理论与装备设计教育部重点实验室;
【基金】：天津市科技支撑计划重点项目(16YFZCGX00130)资助
【分类号】：TG721

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