摘要
逆向工程技术在注塑模具设计中的应用十分广泛,以玩具兵人为例,构建玩具兵人躯干的概念设计模型,应用激光扫描仪进行数据采集,采用逆向工程软件及UG三维造型软件进行产品的曲面重构反求出产品的工程模型,进一步完成产品的结构设计。然后采用Moldflow对材料为ABS的玩具兵人躯干前盖的注塑成型过程进行了预测,包括浇口位置、充填时间、翘曲变形的大小与产生原因、熔接痕位置、气穴等,以期为进一步设计及改进模具结构提供参考。预测结果主要是翘曲变形,产生翘曲的主要原因是材料在冷却过程中收缩不均所致,通过改进模具结构、改善成型工艺条件等方法来减小收缩,从而减小翘曲变形。试模结果和CAE预测吻合较好,且满足质量要求。
Application of reverse engineering technology In order to construct the concept design model in the design of injection mold is very extensive. of the torso of the toy soldiers, the data collection of the toy soldiers was constructed by using the laser scanner. Reverse engineering software and UG 3D modeling software was used to reconstruct the engineering model of product, and further to complete the structure design of the product. Then using Moldflow to predict the injection molding process of the front cover of the toy soldier with ABS, including the gate position, filling time and warping deformation size and produce reason, weld mark position, cavitation etc., in order to further design and improve die structure to provide reference. The prediction result is mainly the warping deformation, the main reason is that the material causes the shrinkage in the cooling process. By improving the structure of the mold and improving the molding process conditions, the shrinkage reduces, so as to reduce the warping deformation. Tryout results are in agreement with the CAE forecast, and meet the quality requirements.
出处
《塑料科技》
CAS
北大核心
2016年第6期66-71,共6页
Plastics Science and Technology
基金
中央专项资金职业教育实训基地建设项目(财教[2012]145号)
广东省高职重点培育专业建设项目(粤财教[2012]445号)
