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DIVULGATION ARTICLES

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Design of a bench hardware-in-the-loop system for the study of chatter in turning.

The violent vibrations due to regenerative effects occurring in machining processes, usually known as chatter, area classical problem. These effects motivate a reduction of the practical life of the tool and seriously reduce the productivity of the machine. Therefore, the chatter has been a prevalent topic for academic and industrial research. On the other hand, experimental investigations on the active reduction of chatter may be difficult in a real machining environment, given the exigency of numerous machining tests and the associated problems of repeatability, due to the involvement of a large number of practical parameters. In this paper, a mechatronic Hardware-In-the-Loop (HIL) simulator for chatter in turning is presented. Such system reproduces experimentally, on a simple mechanical structure located on the laboratory, a certain regenerative chatter, described by stability lobes, previously obtained from the real turning machine of interest.

May 2013

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