Automatic modeling research about involute straight and cylindrical gear based on Pro/E

Involute gear is a transmission part which is widely used in machinery equipments.The three-dimensional modeling operation of the gear is a complex operation with a complicated calculation and heavy workload.When the gear parameter is changed,it must be repeatedly designed,and the efficiency of design is low.This paper mainly talks about how to produce the automatic modeling on involute straight and cylindrical gear.According to the first gear tooth formation theory,the use of the equation to generate involute,through the three-dimensional feature-based modeling,parameter settings,add relationship and programming,parameters of gear are established.In the design of the new gear,as long as the designers will make the parameters of gear a regeneration model.According to the hint of the Pro/E system,they input the appropriate gear parameters,such as the number of teeth,module,pressure angle,wide-tooth,the coefficient and so on,the three-dimensional models of the gear can be quickly and automatically produced.This not only simplifies the process of the design,but also greatly improves the efficiency of the gear design.