Product inspection is a critical process of quality control in manufacturing. Coordinate measuring machine (CMM) is a type of precise inspection device widely used in manufacturing industry. The training of CMM operators is a time-consuming and costly processing, which has been identified as the primary intervention to improve the quality and reliability of the product inspection. Virtual Reality (VR) technology provides an intuitive and immersive user interface, which can be an efficient tool for the CMM training. Existing CMM software tools are either without VR user interface, or inefficient for a particular CMM application. This paper proposes a VR-based CMM training system. It uses virtual environments for trainees to operate and view the CMM motion and measurement processing. The VR-based training provides guides, instructions, and examples for trainees. The system design and implementation are discussed and illustrated.

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