A Method of Geometric Moldability Analysis of Plastic Parts Based on ug NX System

Abstract

The invention belongs to the field of injection molds, and discloses a geometric moldability analysis method of plastic parts based on a UGNX system. The method includes the following steps that (a) simplification of a three-dimensional entity model is achieved to obtain a simplified model; (b) convex hulls of the model simplified through a wrap geometry method are adopted, and a plurality of potential undercut feature faces are obtained; (c) the potential undercut feature faces are divided into a plurality of potential undercut features according to the connection relationship, visual de-molding analysis is conducted on the potential undercut features so as to obtain the de-molding directions corresponding to the potential undercut features and undercut features, and therefore, the several de-molding directions and the undercut features corresponding to the de-molding directions are obtained; (d), the optimal de-molding direction is selected, and according to the de-molding direction,the draft angle of each face of the simplified model is determined. Through the method, a geometric moldability analysis system of the plastic parts is provided, and dependence on the design engineer's experience is reduced.

Description

technical field [0001] The invention belongs to the field of injection molds, and more specifically relates to a method for analyzing the geometric moldability of plastic parts based on the UG NX system. Background technique [0002] In recent years, with the complexity of injection molded parts, the research on automatic mold design technology has become one of the important topics in the development of mold industry. At the same time of product design, mold design and manufacturing factors should be considered, and the relationship between part design and mold design should be established to avoid generating part design results that lead to complex mold structure design. The existence of undercut features, the number and volume of side core pulls, and the choice of demoulding direction are important factors that determine the mold structure and production cost. During the conceptual design phase, customers often make extensive modifications to the geometry of the part. T...

AI Technical Summary

Problems solved by technology

At present, in the design process of injection molds, the geometric moldability analysis of plastic parts is mostly determined by the experience of designers, and the results contain many subjective factors and poor accuracy.

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