Improvement of Performance of Pocket-Size Electro-Discharge Machine by Using Additional Piezoelectric Element.

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  • 超小型放電加工機の重畳用圧電素子による性能の改善
  • チョウ コガタ ホウデン カコウキ ノ チョウジョウヨウ アツデン ソシ ニ

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Abstract

A pocket-size electro-discharge machine of which electrode-feeding is done by using two piezoelectric elements has been developed. One piezo makes inertial force for the Impact Drive Mechanism (IDM). The other piezo adjusts a gap length between an electrode and a workpiece, or forces an electrode to vibrate. To improve' the machining performance of the pocket-size electro-discharge machine, forced vibration of an electrode (Vibration method) and the electrodefeeding with fine step of 10 nm (Interpolation method) are examined by using the additional piezo. By the vibration method, the machining time is decreased to 67 % of that without the additional piezo. By the interpolation method, which can make the resolution of the precise positioning mechanism utilizing the IDM finer, the machining time is decreased to 74 %.

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