Comparison between CAD method and analytical method -rack-gear tool’s profiling-

Résumé

In this paper we propose a CAD method, developed in CATIA design software, for profiling of tool’s generating by enwrapping, especially for rack-gear tool. The method is based on the creation of a virtual mechanism in keeping with the rolling condition of centrodes associated with enveloping profiles assuring that the tool’s profile and blank’s profile meet one of the fundamental theorems of
gearing. It was elaborated, in CATIA design environment, an algorithm and specialized software for determination of the generating rack-gear. In this paper is proposed the numerical validation of the results with an analytical method, unanimously accepted. There are presented application examples for simple analytical profiles.