磁気軸受を用いた非円形中ぐり加工機の開発

概要

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A non-circular fine boring machine for piston pin bores has been developed in this research. The devoloped boring machine uses a magnetic bearing spindle with a hybrid controller. The hybrid controller consists of a conventional PID analogue controller and a digital controller. The PID controller is used for stabilizing the magnetic bearing system. The digital controller, consisting of a personal computer, an A/D converter and four D/A converters, is used for controlling the trajectory of the cutting tool in non-circular machining of piston pin bores. The periodic learning control with inverse transfer function is applied to get the desired non-circular profile of piston pin bore. Several cutting tests are carried out for a non-circular piston pin bore at a rotational speed of 25 rps (1500 rpm). The difference between the reference profile and the cutting profile was within 2 μm.
社団法人日本機械学会の論文
1999-01-25