基于MBD的中差工艺模型快速转换技术

Fast Conversion Technique for MBD-Based Symmetric Tolerance Process Model

基于NX三维设计软件,对MBD设计模型转换为MBD中差工艺模型的关键技术进行研究。通过草图尺寸显示为PMI的方式得到模型的三维尺寸信息,使用VS2012作为开发工具,采用UGOPEN/API、NXOPEN的开发方式对NX软件进行二次开发,实现了读取和转换PMI尺寸信息并驱动模型修改的功能,能够依次快速完成尺寸扣除镀层及中差模型的转换,得到中差工艺模型。

Based on Unigraphics NX, we focus on the key technology of MBD design model transformed into MBD symmetrical tolerance process model. The 3D demension information is obtained by desplaying the sketch size as PMI, VS2012 is used as the development tool, and UGOPEN/API and NXOPEN are adopted for the secondary development of NX software, finally, it realizes the function of reading and transforming PMI dimension information and driving model modification. As a result, the symmertrical tolerance process model can be obtained by quickly deducting the coating thickness and converting the assymmetric tolerance model.