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专利名称：METHOD OF AUTOMATICALLY
CONTROLLING PRESSING FORCE OF PRESSMACHINE AND DEVICE THEREFOR
发明人：Ishii, Mitoshi申请号：EP92924034.9申请日：19921130公开号：EP0569603B1公开日：19970820
摘要：Control is performed so that a constant pressing force can be applied at alltimes when a die tool presses a work. The magnitude of a pressing force when a die toolpresses a work during pressing is detected by a semiconductor strain gage (84), and thethus detected pressing force is compared with a preset pressing force by a controldevice. If this comparison finds a difference between the both pressing forces, then ascrew bar (35) is turned by an AC servomotor (24) to adjust the length of a bottom ram(60), thus controlling a pressing force.
申请人：ISHII TOOL & ENGINEERING CORP
地址：JP
国籍：JP
代理机构：TER MEER STEINMEISTER & PARTNER GbR
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