Program Design for the Three—dimension Parametric Involute Spur Gears Based on Pro/E Wildfire

This paper tries to achieve this goal-making use of the software of Pro/Engineer Wildfire,parameterized design can be applied into Virtual Designing of straight bevel gear,and the involutes equation can be established.According to Man-Machine Interface’s clew,the user only need input some basic parameters of the straight bevel gear,then the 3D-solid of the straight bevel gear can be auto-generated.Therefore,it can shorten the period of development and improve the efficiency.