高速干切滚齿工艺滚刀切削刃载荷分布特性研究

发布时间：2018-06-26 04:48

本文选题：高速干切滚齿 + 切削载荷　；参考：《机械工程学报》2017年15期

【摘要】：高速干切滚齿工艺是一种发展迅速的齿轮绿色制造工艺,但干切条件下刀具容易磨损,特别是滚切工艺材料去除过程的复杂性,导致切削刃的载荷分布不均,刀具局部磨损严重,影响该工艺的经济性。面向齿轮滚切工艺的材料去除过程,提出了基于三维切屑的切削刃载荷计算方法,根据不同切屑几何获得相应单刃切削载荷分布状态及批量加工中切削刃的平均载荷分布状态。通过仿真计算和滚切试验案例,对比分析了切削刃载荷分布与切削刃实际磨损的关系,发现侧刃和顶刃过度圆弧处切削载荷最大,切削刃磨损也最严重,验证了该方法的有效性。最后,基于该方法分析了滚切进给方向和进给量对切削刃载荷分布的影响,其结论对于生产实践中控制刀具磨损具有指导意义。
[Abstract]:High speed dry cutting and hobbing is a rapidly developing green manufacturing process for gears. However, tool wear is easy under dry cutting conditions, especially because of the complexity of material removal process, which leads to uneven load distribution of cutting edge. The local wear of the cutting tool is serious, which affects the economy of the process. For the material removal process of gear rolling process, a method for calculating cutting edge load based on 3D chip is proposed. According to different chip geometry, the corresponding single-edge cutting load distribution state and the average load distribution state of cutting edge in batch machining are obtained. The relationship between the cutting edge load distribution and the actual wear of the cutting edge is compared and analyzed through the simulation calculation and the rolling test case. It is found that the cutting load at the edge and the top edge of the cutting edge is the largest and the cutting edge wear is the most serious. The effectiveness of the method is verified. Finally, based on this method, the influence of feed direction and feed rate on the load distribution of cutting edge is analyzed, and the conclusion is of guiding significance for controlling tool wear in production practice.
【作者单位】：重庆交通大学城市轨道交通系统集成与控制重庆市重点实验室;重庆大学机械传动国家重点实验室;
【基金】：国家自然科学基金(51475058) 重庆市基础与前沿研究计划(cstc2016jcyj A0109) 重庆市教委科学技术研究(KJ1705134)资助项目
【分类号】：TG612

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