| 摘要 |
<p>A description is given of a method for producing a drawing tool comprising a drawing die, a drawing punch and a blank holder. The drawing tool is cast in a single casting operation. For this purpose, a drawing installation (2) and a box (5) in the form of the outline of the drawing punch, to which box a plate (14) is secured, are secured on a pattern part (1). The assembly obtained in this way is suspended in a moulding box (7) and is there completely encapsulated, preferably with a low-melting alloy. After the solidification of the casting material, the cast block is divided into the drawing die (11), the drawing punch (12) and the blank holder (13). <IMAGE></p> |
| 申请人 |
BAYERISCHE MOTOREN WERKE AG, 8000 MUENCHEN, DE |
发明人 |
BURGGRAF, ALFRED, DIPL.-ING., 8080 FUERSTENFELDBRUCK, DE;LUTTER, PETER, 8092 HAAG, DE |
