公开(公告)号：US20080223230A1

公开(公告)日：2008-09-18

申请号：US12075256

申请日：2008-03-10

申请人： Dietmar Schollhammer

发明人： Dietmar Schollhammer

IPC分类号： B30B5/02 ,  B30B15/02 ,  B30B15/06

CPC分类号： B30B15/062 ,  B21D22/00 ,  B21D37/10 ,  B30B15/06

摘要： In a press comprising at least one tool part with certain rigidity, the rigidity of the tool part is adjustable by changing the coupling of the tool part to the plunger or the press table to control the transmission of deformations by bending.

摘要翻译： 在包括至少一个具有一定刚度的工具部件的压力机中，通过改变工具部件与柱塞或压床之间的联接来控制工件部件的弯曲变形传递，可以调节工具部件的刚性。

公开(公告)号：US09713832B2

公开(公告)日：2017-07-25

申请号：US13866107

申请日：2011-10-14

申请人： Dietmar Schollhammer

发明人： Dietmar Schollhammer

IPC分类号： B21D22/20 ,  B21D22/22 ,  B21D24/12 ,  B30B1/14 ,  B30B1/26 ,  B30B1/28 ,  B30B15/14 ,  B30B15/20

CPC分类号： B21D22/20 ,  B21D22/22 ,  B21D24/12 ,  B30B1/14 ,  B30B1/261 ,  B30B1/266 ,  B30B1/28 ,  B30B15/148 ,  B30B15/20

摘要： The drawing press (10) according to the invention has for driving its ram (15) a directionally reversing gear mechanism (22, 54), for example a coupling gear mechanism, and at least one servomotor (23). The servomotor (23) passes through the reversal point (Ut) of the ram movement, which is predetermined by the kinematics of the coupling gear mechanism, for example the extended position of an eccentric drive. During the closing of the die (18), that is to say during a press stroke, the servomotor (23) is activated in such a way that it first passes through this reversal point (Ut), then stops, reverses and then passes through it once again, in order to open the die (18) again. Consequently, the braking to a standstill and re-acceleration of the servomotor for the upper ram (15) takes place while the actual drawing operation is still or already being performed, i.e. during the forming of the metal blank, which significantly reduces the cycle time.

公开(公告)号：US20130333437A1

公开(公告)日：2013-12-19

申请号：US13866107

申请日：2011-10-14

申请人： Dietmar Schollhammer

发明人： Dietmar Schollhammer

IPC分类号： B21D22/20

CPC分类号： B21D22/20 ,  B21D22/22 ,  B21D24/12 ,  B30B1/14 ,  B30B1/261 ,  B30B1/266 ,  B30B1/28 ,  B30B15/148 ,  B30B15/20

摘要： The drawing press (10) according to the invention has for driving its ram (15) a directionally reversing gear mechanism (22, 54), for example a coupling gear mechanism, and at least one servomotor (23). The servomotor (23) passes through the reversal point (Ut) of the ram movement, which is predetermined by the kinematics of the coupling gear mechanism, for example the extended position of an eccentric drive. During the closing of the die (18), that is to say during a press stroke, the servomotor (23) is activated in such a way that it first passes through this reversal point (Ut), then stops, reverses and then passes through it once again, in order to open the die (18) again. Consequently, the braking to a standstill and re-acceleration of the servomotor for the upper ram (15) takes place while the actual drawing operation is still or already being performed, i.e. during the forming of the metal blank, which significantly reduces the cycle time.

摘要翻译： 根据本发明的牵引压力机（10）用于驱动其压头（15），例如联接齿轮机构的定向反转齿轮机构（22,54）和至少一个伺服电动机（23）。 伺服电动机（23）穿过由联接齿轮机构的运动学预定的压头运动的反转点（Ut），例如偏心驱动器的延伸位置。 在模具（18）的关闭期间，也就是说在冲压冲程期间，伺服电动机（23）以这样一种方式启动，使得它首先通过该反转点（Ut），然后停止，反向然后通过 再次，为了再次打开模具（18）。 因此，当实际的拉拔操作仍然或已经被执行时，即在金属坯料的成形期间，对上部压头（15）的伺服电动机的停止和再加速的制动发生，这显着地减少了循环时间 。