Manufacturability Evaluation of Machine Products by Virtual Manufacturing based on Factory Modeling

在大多数先进的工业社会中，实现柔性可变型可变量生产的愿望是强烈的，由于缺乏类似生产的重复，实现优化制造是极其困难的。因此，利用实物来减少生产过程中的原型制作和实验，而利用计算机辅助的方法来提高生产的效率和质量是合适的。本文研究了虚拟制造的概念，以及基于产品/过程模型和相关工厂模型的产品功能和可制造性的综合仿真。主要研究结果总结如下：(1)产品/过程建模的框架得到扩展，以增强技术信息表达能力，并增加对产品功能和制造过程的过程仿真能力。特别是将机械装配运动的动力学行为与产品规格精确地联系起来，从而实现产品设计的系统化改进。(2)讨论了工厂建模的概念，确定了工厂建模的基本组成部分。(3)考虑了由软件工具组成的虚拟制造环境，并准备了一些工具原型，供后续研究活动使用。在本研究中，高性能图形工作站由分配的预算购买，其余预算用于软件工作和相关费用。

In most advanced industrial society, it is strongly desired to achieve flexible variable-type variable-volume production, and it is extremely difficult to realize optimized manufacturing due to the lack of repetition of similar production. Therefore it is considered to be appropriate to reduce the prototyping and experiments in production processes by use of physical objects, but to increase the efficiency and quality of production by use of computer aided methods. In this research, a concept of virtual manufacturing and comprehensive simulation of product functionality and manufacturability based on product/process models and associated factory models have been investigated. The major results are summarized as follows. (1) The framework for product/process modeling has extended to enhance the ability of technological information representation, and to increase process simulation capability for product functionality and manufacturing processes. In particular, dynamic behavior of machine assembly motion is precisely related with the product specification in order to realize systematic improvements of product design. (2) A concept of factory modeling is discussed, and its basic components are identified. (3) Virtual manufacturing environment which consists of software tools is considered, and some of the prototypes of the tools have been prepared for use in subsequent research activities. In this research, highperformance graphics workstations were acquired by the assigned budget, and the rest of the budget was spent for software works and related cost.