MACHINE TOOL

To provide a machine tool configured so that transmission of vibration to a machining part thereof can be properly suppressed.SOLUTION: First and second movable bodies 17 and 18 are supported on a portal frame 16. Both movable bodies 17 and 18 are actuated by a linear motor. A coil of the linear mot...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	ITATSU TAKESHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BLASTING COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MACHINE TOOLS MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SHOCK-ABSORBERS SPRINGS THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	To provide a machine tool configured so that transmission of vibration to a machining part thereof can be properly suppressed.SOLUTION: First and second movable bodies 17 and 18 are supported on a portal frame 16. Both movable bodies 17 and 18 are actuated by a linear motor. A coil of the linear motor is short-circuited while being cut off from a power source. Therefore, when vibration is applied to the frame 16, electromotive force is generated in the coil and a magnetic field is generated. The magnetic field causes the movable bodies 17 and 18 to be restrained and braking is applied by mass loads of the movable bodies 17 and 18. This allows the movable bodies 17 and 18 to restrain the frame 16 so that the vibration is suppressed.SELECTED DRAWING: Figure 1 【課題】工作機械の加工部に対する振動の伝達を適切の抑制すること。【解決手段】門形のフレーム１６に第１，第２移動体１７，１８を支持する。両移動体１７，１８はリニアモータによって作動される。そのリニアモータのコイルは電源から切り離された状態において短絡される。このため、フレーム１６に振動が加えられると、前記コイルに起電力が生じて、磁界が発生し、この磁界によって移動体１７，１８が拘束されて、移動体１７，１８の質量負荷によってブレーキが作用する。このため、移動体１７，１８がフレーム１６を拘束し、振動が抑制される。【選択図】図１