公开(公告)号：US5417133A

公开(公告)日：1995-05-23

申请号：US200096

申请日：1994-02-22

申请人： Johannes C. W. Bakermans ,  Lawrence R. Holbrook ,  Brian J. Stumm

发明人： Johannes C. W. Bakermans ,  Lawrence R. Holbrook ,  Brian J. Stumm

IPC分类号： B26D7/18 ,  B26F1/14

CPC分类号： B26D7/1818 ,  Y10T83/2172 ,  Y10T83/2218 ,  Y10T83/9437

摘要： A stamping and forming machine positively prevents slug pulling by stripping the slug off of the end of the punch as the punch is being withdrawn from the die opening after a blanking operation. This is accomplished by providing a die insert support in supporting contact with the die insert having an opening that is identical to the opening in the die insert, but that is rotationally or laterally displaced therefrom by a small amount. As the punch pushes a slug through the opening in the die insert, the slug encounters the displaced opening in the die insert support and is shifted slightly as it is forced into that opening by the punch. As the punch is withdrawn from the die insert opening, the shifted slug cannot return through the opening and is stripped off of the end of the punch.

摘要翻译： 冲压成型机在冲裁操作之后，当冲头从模具开口中取出时，通过从冲头的端部剥离芯块来积极地防止料块拉拔。 这是通过提供一种模具插入物支撑件来实现与模具插入件的支撑接触，该模具插入件具有与模具插入件中的开口相同的开口，但是其旋转地或横向地从其移位少量。 当冲头通过模具插入件中的开口推动塞子时，塞子遇到模具插入件支撑件中的移动的开口，并且随着冲头被迫进入该开口而略微移动。 当冲头从模具插入件开口退出时，移动的塞子不能通过开口返回并且从冲头的端部剥离。

公开(公告)号：US5263353A

公开(公告)日：1993-11-23

申请号：US905960

申请日：1992-06-29

申请人： Johannes C. W. Bakermans ,  Lawrence R. Holbrook

发明人： Johannes C. W. Bakermans ,  Lawrence R. Holbrook

IPC分类号： B21D28/06 ,  B21D28/12 ,  H01R43/16 ,  B21D28/14 ,  B21D28/16

CPC分类号： H01R43/16 ,  B21D28/06 ,  B21D28/12 ,  Y10T29/49204

摘要： Flat stamped electrical contact device (2) has a contact edge (8,8') which extends from the first major surface (4) to the second major surface (6) of the device. The contact edge surface (8,8') is smooth for substantially its full width and does not have a fractured portion or a burr extending from the second major surface (6). The smooth straight surface is produced by steps of coining the opening produced during the initial punching operation at a location adjacent to the second major surface after the opening has been punched and then shaving the edge to produce the finished contact surface.

摘要翻译： 平面冲压的电接触装置（2）具有从装置的第一主表面（4）延伸到第二主表面（6）的接触边缘（8,8'）。 接触边缘表面（8,8'）基本上为其全宽度是平滑的，并且不具有从第二主表面（6）延伸的断裂部分或毛刺。 平滑的直表面是通过以下步骤制造的：通过在开始冲压之后将在初始冲压操作期间产生的开口压印在与第二主表面相邻的位置处，然后剃刮边缘以产生最终的接触表面的步骤。

公开(公告)号：US5136907A

公开(公告)日：1992-08-11

申请号：US704587

申请日：1991-05-22

申请人： Johannes C. W. Bakermans ,  Jack F. Dubbs ,  Lawrence R. Holbrook

发明人： Johannes C. W. Bakermans ,  Jack F. Dubbs ,  Lawrence R. Holbrook

IPC分类号： B21D28/06 ,  B21D45/00 ,  B26D7/18

CPC分类号： B21D28/06 ,  B21D28/145 ,  B21D45/006 ,  B26D7/1818 ,  B26D2007/1881 ,  B26F2210/08 ,  Y10T83/2055 ,  Y10T83/2179 ,  Y10T83/2213 ,  Y10T83/9425 ,  Y10T83/9437

摘要： Stamping die for use with a punch to produce holes in strip material with the resulting production of a slug has a camming rib in the die opening. The rib prevents slug pulling when the punch returns from its extended position to its retracted position. The camming rib causes the slug to become wedged in the die opening and is effective to move the slug laterally in its own plane across the leading edge of the punch thereby overcoming any surface tension or other forces which might cause the slug to adhere to the face of the punch. The camming rib can be straight and extend parallel to the axis of the die opening if the die opening is not tapered. If the die opening has a slight taper, the camming rib is inclined thereby to cause movement of the slug across the face of the punch as the punch moves into the die opening.

摘要翻译： 与冲头一起使用的冲压模具在条带材料中产生孔，由此产生块状物，在模具开口中具有凸轮肋。 当冲头从其延伸位置返回到其缩回位置时，肋防止了塞子拉动。 凸轮肋使得块塞楔入模具开口中并且有效地将块塞在其自身的平面中横向移动穿过冲头的前缘，从而克服任何表面张力或其他可能导致块塞附着在表面上的力 的拳头。 如果模具开口不是锥形，则凸轮肋可以是直的并且平行于模具开口的轴线延伸。 如果模具开口具有微小的锥度，则当冲头移动到模具开口中时，凸轮肋条倾斜，从而使块塞移动穿过冲头的表面。