This paper has completely analyzed the structure characteristics,design parameters, output results and software research schemes of the hypoid gears, then the data structure and database of the hypoid gears CAD system is established.
The double circular-arc gears CAD systems designed in VB language combines the accuracy and high speed operation abilities of computer, a great deal memory and manage data abilities ofcomputer and abundant chart dispose abilities of computer with creating thinking and colligating analysis ability and logical judge ability of human being.
Based on analysis of the composition and character of the data used in designing and manufacturing the spiral bevel gears,the engineering database and its management system of spiral bevel gears' CAD system are developed in this paper by means of the advanced programming software VB 6.0.This database system is the important base of the spiral bevel gears' CAD system.
The CAD system of circular arc gear used in meters consists of tooth profile design, gear cutter hob design and gear cheeking template design.It not only provides design parameters but also draws relevant engineering drawing. The system is distinguished for its high speed, high precision and simple operation and capability in processing Chinese characters.