DEVICE AND METHOD FOR CONTROLLING STOP OF HYDRAULI

专利名称：DEVICE AND METHOD FOR CONTROLLING

STOP OF HYDRAULIC PRESS AND DEVICEAND METHOD FOR DETECTING TROUBLEOF SPEED SELECTOR VALVE

发明人：ARIJI, NOBUAKI,SATO, MASUTAKA申请号：EP01908252申请日：20010302公开号：EP1279488A4公开日：20050330

摘要：A rod pressure holding instruction section (67) controls a servo motor (37) torotate a two-way pump (29) in a counter direction, and to supply hydraulic oil withpressure, which does not exceed pressure applied by an own weight of a ram (5U), to atwo-way pump-side piping (49), increasing pressure. A difference between pressure in arod-side cylinder chamber-side piping (43) of a speed switching valve (47) and pressure ina two-way pump-side piping (49) of the speed switching valve (47) is decreased, therebydecreasing an impact generated when switching the speed switching valve (47) andstopping the ram (5U) at a predetermined position.

申请人：AMADA COMPANY, LTD.

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