基于仿真数据的浇注系统CAD模型自动重构  

Automatic reconstruction of CAD model of gating system based on simulation data

作　　者：吕帅 侯斌魁[1] 黄志高[1] LU Shuai;HOU Bin-kui;HUANG Zhi-gao(State Key Laboratory of Material Processing and Die&Mould Technology,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China)

机构地区：[1]华中科技大学材料成形与模具技术国家重点实验室,湖北武汉430074

出　　处：《模具工业》2020年第7期1-5,9,共6页Die & Mould Industry

基　　金：广东省省级科技计划项目(2017B090904006)。

摘　　要：浇注系统仿真数据无法直接被CAD系统利用,为提高设计效率和质量,提出了一种基于仿真数据的浇注系统CAD模型自动重构方法,对仿真数据进行解析,以附带属性的中心线为基本单位提取浇注系统信息,以此构建拓扑模型,将曲线出现次数作为分析对象,完善拓扑模型获得浇注系统完整中心线,使用小波分解算法对投影后中心线进行局部光顺处理,最终结合参数化模板库实现浇注系统重构。以实际生产中1模2腔结构的模具为例,基于MoldFlow和UG NX平台,以序列化和反序列化技术作为系统交互手段,验证该方法的有效性和实用性。The simulation data of the gating system could not be directly used by the CAD system. In order to improve the design efficiency and quality, an automatic reconstruction method for the CAD model of the gating system based on the simulation data was proposed. Based on the analysis of the simulation data, the gating system information was extracted by taking the centerline with attributes as the basic unit to build a topological model. Taking the number of curve occurrences as the analysis object, the complete centerline of the gating system was obtained by improving the topological model, and the projection centerline was partially smoothened by using wavelet decomposition algorithm, and the gating system was reconstructed by combining with the parametric template library finally. Taking themould with 2 cavities as an example, based on MoldFlow and UG NX platforms, serialization and deserialization technologies were used as system interaction means to verify the validity and practicability of the method.

关 键 词：注射模 浇注系统 仿真数据 拓扑模型 光顺 自动重构 

分 类 号：TG76[金属学及工艺—刀具与模具] TP391.9[自动化与计算机技术—计算机应用技术]