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1.发明公开
公开(公告)号：EP0867271A3
公开(公告)日：2000-03-15
申请号：EP98104198.1
申请日：1998-03-10
发明人： Nakagawa, Tatsuji , Fujimura, Itaru , Hosoya, Hiroshi , Gomikawa, Junkichi , Fujimoto, Katuhiko
CPC分类号： B30B1/323 , B30B15/161 , B30B15/24 , Y10T83/18 , Y10T83/4473
摘要： A hydraulic press has a crown (31), a bed (33), and a column (32) connecting the crown (31) and bed (33). The column (32) contains main cylinder devices each having a fast cylinder (36) and a pressure cylinder (37). Slide position scales are disposed either near the slide (1) or the main cylinder devices to detect the position of the slide during pressing. An arithmetic unit processes data from a position instruction value generator and the slide position scales to produce an output for controlling servo valves and circuit switching valves. Those valves control the main cylinder devices. Bolster cylinders are disposed on the bed to stabilize the device. Pressure detectors are placed near the bolster cylinders. An arithmetic unit processes data from the pressure detectors and a cushion pressure instruction value generator to control a servo valve and a switching valve. The switching valve controls the bolster cylinders. The main cylinders apply force against a slide which contains a slide cylinder (40). Punches and trimming pieces between the slide cylinder and the bolster cylinders move together upon the introduction of force applied by the slide cylinder. A die and a blank holder also move together upon the introduction of force by the slide cylinder to secure the blank in position during subsequent operations. Pad position scales are placed near the slide cylinder. An arithmetic unit processes data from a position instruction value generator, and the pad position scales to control a plurality of servo valves which control fluid pressure in the slide cylinder.
摘要翻译： 液压机具有冠，床和连接冠和床的柱。 该柱包含主缸装置，每个主缸具有快速气缸和压力缸。 滑动位置刻度盘设置在滑块或主缸装置附近，以便在按压期间检测滑块的位置。 算术单元处理来自位置指令值发生器和滑动位置的数据，以产生用于控制伺服阀和回路切换阀的输出。 这些阀门控制主缸装置。 支撑筒设置在床上以稳定装置。 压力检测器放置在靠垫柱附近。 算术单元处理来自压力检测器和缓冲压力指令值发生器的数据，以控制伺服阀和切换阀。 开关阀控制缓冲缸。 主缸对包含滑动缸的滑块施加力。 滑动缸和缓冲缸之间的冲压件和修整件在引入由滑动缸施加的力时一起移动。 模具和坯料夹持器也随着滑动筒的力的引入一起移动，以便在随后的操作期间将坯料固定在适当位置。 垫片位置刻度放置在滑动柱体附近。 算术单元处理来自位置指令值生成器的数据，并且，垫位置缩放以控制控制滑动缸中的流体压力的多个伺服阀。
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公开(公告)号：EP0867271B1
公开(公告)日：2006-02-08
申请号：EP98104198.1
申请日：1998-03-10
发明人： Nakagawa, Tatsuji , Fujimura, Itaru , Hosoya, Hiroshi , Gomikawa, Junkichi , Fujimoto, Katuhiko
CPC分类号： B30B1/323 , B30B15/161 , B30B15/24 , Y10T83/18 , Y10T83/4473
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公开(公告)号：EP0867271A2
公开(公告)日：1998-09-30
申请号：EP98104198.1
申请日：1998-03-10
发明人： Nakagawa, Tatsuji , Fujimura, Itaru , Hosoya, Hiroshi , Gomikawa, Junkichi , Fujimoto, Katuhiko
CPC分类号： B30B1/323 , B30B15/161 , B30B15/24 , Y10T83/18 , Y10T83/4473
摘要： A hydraulic press has a crown, a bed, and a column connecting the crown and bed. The column contains main cylinder devices each having a fast cylinder and a pressure cylinder. Slide position scales are disposed either near the slide or the main cylinder devices to detect the position of the slide during pressing. An arithmetic unit processes data from a position instruction value generator and the slide position scales to produce an output for controlling servo valves and circuit switching valves. Those valves control the main cylinder devices. Bolster cylinders are disposed on the bed to stabilize the device. Pressure detectors are placed near the bolster cylinders. An arithmetic unit processes data from the pressure detectors and a cushion pressure instruction value generator to control a servo valve and a switching valve. The switching valve controls the bolster cylinders. The main cylinders apply force against a slide which contains a slide cylinder. Punches and trimming pieces between the slide cylinder and the bolster cylinders move together upon the introduction of force applied by the slide cylinder. A die and a blank holder also move together upon the introduction of force by the slide cylinder to secure the blank in position during subsequent operations. Pad position scales are placed near the slide cylinder. An arithmetic unit processes data from a position instruction value generator, and the pad position scales to control a plurality of servo valves which control fluid pressure in the slide cylinder.
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