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Knowledge-based product planning and engineering of injection-molded parts

基于知识的注塑件产品规划和工程

基本信息

批准号：
284157356
负责人：
Professor Dr.-Ing. Peter Köhler
金额：
--
依托单位：
Lehrstuhl für Konstruktion und Kunststoffmaschinen
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2015
资助国家：
德国
起止时间：
2014-12-31 至 2016-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/284157356?language=en
关键词：
Knowledge based product planning engineering

项目摘要

The motivation for this project is due to the absence of an integrated approach of supporting the designer in the construction of injection-molded parts. Starting at the product planning via part design to the final optimization of the part geometry, the designer will be supported by the developed procedures and methods of this research project which combine multidisciplinary knowledge. In the context of the product planning, the designer gets the opportunity of an objective manufacturing process and material selection by the application of Knowledge-Based systems. To achieve this aim, a method in which the existing expert knowledge is stored in form of a database, the knowledge base, will be developed. By a subsequent input and by the process-based comparison of product requirements with the expert knowledge, the available manufacturing methods can be assessed and an objective choice can be taken. The created knowledge base will be enhanced by boundary conditions, which arise from the choice of a particular manufacturing process. Based on this information, material properties, that have to be fulfilled by a specific material will be proposed to the designer in order to achieve the required product properties and to allow a processing using the selected production process. Using this information, a ranking of the possible materials can be created. The selection of a specific material is carried out by the user.An additional objective of this project includes the development of an integrated product simulation in order to reduce the necessary optimization steps during the molded part design and dimensioning. Firstly, the integrated product simulation includes the Knowledge-Based molded part design. This means that the compliance with material, production, and stress-specific boundary conditions is monitored during the creation of the molded part in the CAD environment and, if necessary, a corrective intervention in the design process is possible. For this purpose, solutions for the formalization of knowledge and implementation are developed in the CAD environment. It will be implemented in the form of design and analysis features for quality assurance. The evaluation is done through the integration of design guidelines, design rules and a link to the databases which have been created. Secondly, methods for Knowledge-Based analysis of injection molding simulations are developed which enable automated rheological and cycle time optimizing part design. In the rheological design will be determined procedure based. By a knowledge-based analysis it can be detected whether it is necessary to improve the quality of the mold-filling behavior by an implementation of flow aids and barriers in the part geometry. The method for cycle time optimization of the design allows the optimization of the geometry of the molded-part to the effect that a uniform and thus rapid cooling is achieved in the subsequent injection molding process.

这个项目的动机是由于缺乏一个综合的方法来支持设计师在注塑件的建设。从产品规划开始，通过零件设计到零件几何形状的最终优化，设计人员将得到本研究项目开发的程序和方法的支持，这些程序和方法结合了联合收割机多学科知识。在产品规划的背景下，设计师得到一个客观的制造工艺和材料选择的机会，通过应用基于知识的系统。为了实现这一目标，现有的专家知识存储在一个数据库的形式，知识库的方法，将被开发。通过后续的输入和基于过程的产品要求与专家知识的比较，可以评估可用的制造方法并做出客观的选择。所创建的知识库将通过边界条件得到增强，边界条件是由特定制造工艺的选择产生的。根据这些信息，将向设计师提出特定材料必须满足的材料特性，以实现所需的产品特性，并允许使用选定的生产工艺进行加工。使用该信息，可以创建可能材料的排名。具体材料的选择由用户进行。该项目的另一个目标是开发集成的产品模拟，以减少在注塑件设计和尺寸确定过程中必要的优化步骤。首先，集成产品仿真包括基于知识的注塑件设计。这意味着在CAD环境中创建模塑件时，可监控材料、生产和应力特定边界条件的符合性，必要时可在设计过程中进行纠正干预。为此目的，在CAD环境中开发的知识和实施的形式化的解决方案。它将以设计和分析特征的形式实施，以保证质量。通过整合设计指南、设计规则和与已创建的数据库的链接进行评估。其次，开发了基于知识的注塑成型模拟分析方法，使自动流变和循环时间优化零件设计成为可能。在流变设计中将以程序为基础确定。通过基于知识的分析，可以检测是否有必要通过在零件几何形状中实施流动辅助和障碍来改善模具填充行为的质量。用于设计的循环时间优化的方法允许模制部件的几何形状的优化，从而在随后的注射模制过程中实现均匀且因此快速的冷却。