切齿仿真在数控铣齿机软件设计中的应用

螺旋锥齿轮加工过程的软件设计是数控铣齿机设计成败的关键。文章研究了螺旋锥齿轮在万能铣齿机和数控铣齿机上加工时的切齿仿真原理并计算出它们每一步的切削量,提出了一种通过比较两种铣齿机上的切削量来判断软件是否正确的方法。

液力偶合器外壳数控加工中宏程序的用法与编程

针对在液力偶合器外壳数控加工中的相似结构编程和工件原点找正问题,提出了利用宏程序编程的解决方案,叙述了液力偶合器外壳数控加工中宏程序的用法及编程。

基于整体刀盘的摆线齿端齿盘切齿加工

为了实现在国产数控锥齿轮铣齿机上加工摆线齿端齿盘,对摆线齿端齿盘的切齿加工原理和加工方法进行了研究。基于摆线齿端齿盘的结构特点,提出了采用整体刀盘加工摆线齿端齿盘的加工方法,并通过改变刀盘半径和刀刃圆弧半径对轮齿齿长曲率和齿高曲率进行了修正。基于摆线齿端齿盘的切齿加工原理,提出了加工摆线齿端齿盘的刀盘参数以及机床调整参数的计算方法,对摆线齿端齿盘进行了刀盘干涉检查。通过实际的切齿加工、齿形误差检测以及接触区着色检验,验证了在国产数控锥齿轮铣齿机上采用整体刀盘加工摆线齿端齿盘的加工原理和加工方法的正确性和可行性。

Tooth surface geometry optimization of spiral bevel and hypoid gears generated by duplex helical method with circular profile blade

In order to effectively improve meshing performance of spiral bevel and hypoid gears generated by the duplex helical method, the effects of straight lined and circular cutting edges profile on meshing and contact of spiral bevel and hypoid gears were investigated analytically. Firstly, a mathematical model of spiral bevel and hypoid gears with circular blade profile was established according to the cutting characteristics of the duplex helical method. Based on a hypoid gear drive, the tooth bearings and the functions of transmission errors of four design cases were analyzed respectively by the use of the tooth contact analysis(TCA), and the contact stresses of the four design cases were analyzed and compared using simulation software. Finally, the curvature radius of the circular profile blade was optimized. The results show that the contact stresses are availably reduced, and the areas of edge contact and severe contact stresses can be avoided by selecting appropriate circular blade profile. In addition, the convex and concave sides are separately modified by the use of different curvature radii of inside and outside blades, which can increase the flexibility of the duplex helical method.

论中国锥齿轮技术的转型升级

结合国外锥齿轮技术的发展趋势以及我国锥齿轮技术的现状,探讨了如何实现中国锥齿轮技术的转型升级。重点论述了摆线等高齿及其干切削加工技术的推广和数字化集成制造问题。基于Gleason、Oerlikon、Klingelnberg三种齿制锥齿轮的切齿加工原理,提出了建立统一锥齿轮理论的思路及实现方法;基于国产数控加工装备的现状,提出了采用五刀法加工克林贝格锥齿轮的切齿加工原理。