Abstract
Abstract The automated inspection of parts containing machined surfaces such as internal or external threads can be accomplished using a variety of technologies and associated sensors. On-machine inspection of threads is important because it is then possible to rework the piece if flaws are detected. Quality assessment decisions based on thread information require more information than can be provided by functional tests such as ring or plug gages. This paper describes the geometric, kinematic, and dynamic criteria for the design of a direct contact stylus capable of accurately following the profile of threads at speeds up to 4.25 mm/sec . The direct contact stylus probe can be used in an on-line manufacturing control system to supply thread profile data to the machine tool controller and production information system.
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