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公开(公告)号：US09501052B2
公开(公告)日：2016-11-22
申请号：US14249964
申请日：2014-04-10
CPC分类号： G05B19/041 , B21D24/02
摘要： A die cushion force control method and a die cushion apparatus generates a die cushion force on a cushion pad based on a die cushion force command value set in advance. A die cushion force command value equal to or larger than a target die cushion force command value is outputted initially in order to suppress an initial die cushion force overshoot generated when the target die cushion force command value configured to be stepwise is used as the die cushion force command value, then a die cushion force command value decreased continuously (gradually) so as to be smaller than the target die cushion force command value is outputted, and subsequently a die cushion force command value increasing gradually so as to be equal to the target die cushion force command value is outputted.
摘要翻译： 模具缓冲力控制方法和模具缓冲装置基于预先设定的模具缓冲力指令值，在缓冲垫上产生模具缓冲力。 初始地输出等于或大于目标模具缓冲力指令值的模具缓冲力指令值，以便当构造为逐步的目标模具缓冲力指令值用作模具缓冲垫时，抑制产生的初始模具缓冲力过冲 力指令值，则模具缓冲力指令值连续（逐渐地）减小到小于目标模具缓冲力指令值，并且随后模具缓冲力指令值逐渐增加以使其等于目标 输出缓冲力指令值。
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公开(公告)号：US11826810B2
公开(公告)日：2023-11-28
申请号：US17076497
申请日：2020-10-21
发明人： Yasuyuki Kohno , Kazufumi Tsuchida
IPC分类号： B21D24/02
CPC分类号： B21D24/02
摘要： A die cushion device includes four hydraulic cylinders that support a cushion pad, a die cushion load controller that controls each of the hydraulic cylinders and generates a die cushion load on the cushion pad, and a die cushion position controller that controls each of the hydraulic cylinders to control a position of the cushion pad. In a case where only a left part is produced with a left die by a press machine, the die cushion load controller performs die cushion load control on two hydraulic cylinders on the left side, and the die cushion position controller performs die cushion position control on two hydraulic cylinders on the right side.
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公开(公告)号：US09669446B2
公开(公告)日：2017-06-06
申请号：US14304312
申请日：2014-06-13
发明人： Yasuyuki Kohno , Kazufumi Tsuchida , Junji Makabe
摘要： The die cushion force setting apparatus according to an aspect of the present invention allows die cushion forces (component forces) acting on plural driving shafts to be set easily, makes it easy to apply strong or weak die cushion forces to a complex-shaped drawn part in a plane of a cushion pad, and provides a smooth die cushion force distribution. An operator manually enters a total die cushion force, axial component force of a left front hydraulic cylinder, and center-of-force position by operating an input device. Based on the information entered via the input device, the numerical computing device B1 calculates axial component forces of three hydraulic cylinders through numerical computations. The one axial component force thus entered and three axial component forces thus computed numerically are set as the axial component forces of four hydraulic cylinders.
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公开(公告)号：US20210121932A1
公开(公告)日：2021-04-29
申请号：US17076497
申请日：2020-10-21
发明人： Yasuyuki KOHNO , Kazufumi Tsuchida
IPC分类号： B21D24/02
摘要： A die cushion device includes four hydraulic cylinders that support a cushion pad, a die cushion load controller that controls each of the hydraulic cylinders and generates a die cushion load on the cushion pad, and a die cushion position controller that controls each of the hydraulic cylinders to control a position of the cushion pad. In a case where only a left part is produced with a left die by a press machine, the die cushion load controller performs die cushion load control on two hydraulic cylinders on the left side, and the die cushion position controller performs die cushion position control on two hydraulic cylinders on the right side.
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