The System Development Of Parametric Gear Design Based On UG OPEN

Gear, having a very wide application Potential, are widely used in the transmission systems of aviation,spaceflight and engineering mechanical transmission systems, with much advantage such as its high stability and bearing loads. However, the structures of gear are very sophisticated, and design difficulties. To meet the needs of CAD/CAE/CAM, it is a very important Practical significance that realizes gear's 3-D parametric modeling for follow-up works.Based on UG, this project makes use of UG secondary development languages offered by modules of UG/OPEN API,UG/OPEN MenuScript and UG/OPEN UIStyler, and then realizes 3-D parametric modeling of cylindrical spur gear,cylindrical helical gear,straight bevel gear.Firstly, starting with the establishment mathematical model of plane involute,mathematical model of the cylindrical spur gear and cylindrical helical gear,are established. It realizes gears 3-D parametric modeling.Secondly, on the study of the bevel gears meshing theory,mathematical model are established,both of spherical involute and straight bevel gear. It realizes the 3-D Parametric modeling of spherical involute. At last,the 3-D parametric modeling of straight bevel gear is completed.The system can not only save the time of designers from the heavy workload,but also improve design efficiency. At the same time,the project lays the foundation for CAE and CAM,and the proposed design method are useful to a certain extent for modeling other types of gear.