Shape aware Computer Aided Tolerancing: A new methodical and computational framework for the assembly and mobility simulation based on Skin Model Shapes (ShapeCAN)

由于制造不精确的公理，每个已制造的零件都不可避免地会出现几何偏差。这些偏差极大地影响了机械产品的质量和功能，导致了可预防的自然资源消耗和安全损害。然而，由于公差决策对制造和检验成本、可装配性和产品在使用过程中的行为有很大的影响，因此复杂组件和产品的几何变化管理即使对创新公司也是一个重大挑战。为了在产品开发的公差设计过程中考虑这些方面，需要基于一致和完整的几何产品规范和验证语言的模型，该模型能够集成计算机辅助设计和制造过程的不同阶段的仿真和测量结果。所提出的研究项目的主要贡献在于所开发的用于计算机辅助公差设计的详细虚拟零件表示的生成、装配和运动学分析的方法和工具。这些方法和工具将考虑到产品生命周期中设计、制造、检验、组装和使用的所有不同方面，实现几何规格的持续转移。此外，开发的算法和实践将允许实施计算机辅助工具，以应用于复杂系统和产品的设计。在此基础上，可以开发连贯和完整的计算机辅助公差过程的潜力，从而减少自然资源的消耗，提高产品的安全性和可靠性。

Geometric deviations are inevitably observable on every manufactured workpiece due to the axiom of manufacturing imprecision. These deviations hugely affect the quality and function of mechanical products, which leads to preventable consumptions of natural resources as well as safety damages. However, the management of geometric variations for complex assemblies and products is a major challenge even for innovative companies because of the far impact of tolerancing decisions on the manufacturing and inspection costs, the assemblability, and the product behavior during usage. In order to consider these various aspects during tolerancing in product development, models based on a coherent and complete language for the geometric product specification and verification are required, which enable the integration of simulation and measurement results from the various stages of the computer aided design and manufacturing processes.The main contribution of the proposed research project can be found in the developed methods and tools for the generation, assembly, and kinematic analysis of detailed virtual part representatives denoted as Skin Model Shapes, which are to be used for computer aided tolerancing. These methods and tools will enable a continuous transfer of geometric specifications considering all the different facets of design, manufacturing, inspection, assembly, and usage along the product life-cycle. Moreover, the developed algorithms and practices will allow the implementation of computer aided tools for the application in the design of complex systems and products. Based thereon, the potentials of a coherent and complete computer aided tolerancing process can be exploited, which leads to a reduced consumption of natural resources and an increased product safety and reliability.