Abstract
In this paper, the mathematical modeling, the dynamic solution, and the decision criteria through calculus of variations to complete the optimal material removal rate (MRR) control of a cutting tool under the expected machining quantity are introduced. To realize the optimum MRR, a commercialized lathe system with a DSP (Digital Processor Controller) and a man-machine interface is developed. During machining, the feed movement is interrupted and the position of the cutting tool at this moment returns to the fixed original point. After that the rotation of the work-piece continues the last revolution, the cutting edge is moved off the transient surface in the axial direction, after which the rotation stops. Additionally, the implementation of dynamic MRR control for a real-word industrial case is experimentally performed on our proposed digital PC-based lathe system. The surface roughness of all machined work-pieces is found to not only stabilize as the tool consumed, but also accomplish the recognized standard for finish turning. With this study, the adaptability of the dynamic control of optimum MRR as well as the realization of the digital PC-based lathe system are absolutely guaranteed.
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