A Desktop VR Based Modular Fixture Design Training System

Abstract

Modular fixtures are one of the important aspects of manufacturing. This paper presents a desktop VR system which provides a training environment that allows participants to interact naturally with digital objects and configure fixture system instructively. The modular fixture design procedure is proposed. It assists the trainees to make the feasible design decisions and master the necessary principles involved in modular fixture design as well. A hierarchical data model is proposed to represent the modular fixture assembly. Based on this representation, the user can manipulate the virtual models precisely in VE during the design and assembly processes. The assembly relationship between fixture elements is analyzed and the assembly operation process is discussed. Moreover, a Case Based Reasoning (CBR) approach for useful cases retrieval is presented. It provides the trainee with design references to achieve a better design. The case study has demonstrated the functionality of the proposed training system.