An integration of CAD/CAM/CAE System for Design and Manufacturing of Die and Mold.

用于设计和制造模具的CAD/CAM/CAE系统的计算机集成从根本上由在模具上创建表面的几何造型系统、设计几何特征的分析系统、自由曲面的加工-精加工-测量系统和接口系统，接口系统具有转换图，用于控制制造过程。作为模具制造的辅助技术，1986年和1987年提出了一种称为单元构造几何模型的几何模型。可以把CAD系统看作是生成所需几何模型的几何元素的合成过程。1988年，人们提出了一种新的几何模型转换方法，即扩展的几何模型P-map几何模型，用于将几何模型转换为CAD、CAM和FEM模型。为了扩大模具的加工条件，提高切割面的尺寸精度，开发了基于“逆偏置法”的模具加工系统。该方法可方便地生成模具上任意形状刀具的复杂自由曲面的NC数据，并可在模具设计前和模具加工、精整后对模型上的三维曲面进行几何形状的测量，采用自动非接触测量测头的CAT系统。这些计算机辅助设计和制造系统与信息网络系统相连。

An computer integration of CAD/CAM/CAE system to design and to manufacture dies and molds is fundamentally constructed from geometric modeling systems to create surfaces on the die and mold,analytical system to design geometrical features, machining-finishing-measuring systems for free-form surfaces, and an interface system with a conversion diagram to control a manufacturing process.In order to realized an integration of computer-aided technology for the die and mold manufacturing, a geometric model called the Cell- Constructed geometric Model (CCM) was proposed in 1986 and 1987. It was possible to regard the CAD system as a synthesis process of geometric elements for generating a required geometric model. In 1988, the expanded geometric model called "P-map geometric model" was proposed as a new conversion process to exchange the geometric model to CAD,CAM and FEM model. This system was especially easy to convert CAD data to CL-data to machine the free-form surface on the die and mold.In order to expand the machining condition for the die and mold, and to improve dimensional accuracy on cutting surface, a machining system based on "inverse offset method" was developed. By this method, NC-data for complex free-form surface on the die and mold with any kind shaped tool, were easy to produce.To measure the geometric shape of three dimensional surfaces on the model before designing and on the die and mold after machining and finishing, CAT system with automatic non-contact measuring probe was introduced. These computer aided design and manufacturing systems were connected with an information network system.