An approach to extract machining features for casting parts is presented. It is capable of recognizing interacting machining features. There are five phases in the recognition process: Boolean difference of the final part model and the raw part; identification of machining faces (M‐faces) from the final part model and the raw part model; decomposition of the removed simple volumes into delta simple volumes based on M‐faces; gluing the delta simple volumes into sets of feasible simple volumes based on M‐faces; testing. This strategy is process‐oriented and feature‐independent. It recognizes all features that can be produced by common machining operations in a uniform way and produces alternative sets of machining features.
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