发明名称 |
Method and device for manufacturing a drill blank or a mill blank |
摘要 |
<p>The present invention relates to a method for manufacturing a drill blank or a mill blank by extrusion, said method comprising the forming of a first blank portion (B1) having external, axially extending external flutes and the forming of a further blank portion (B3) in the shape of a shaft. The invention also relates to a device for manufacturing a drill blank or a mill blank. <??>The method according to the invention is characterised by: extruding a first blank portion (B1) having a free end and external flutes; allowing the extrusion to continue to supply further extruding mass into a cavity (6), said supply of extruding mass completely filling out the external flutes of the first blank portion (B1) to produce a second blank portion (B2) integral with the first blank portion (B1); allowing the extrusion to continue to produce a desired length of the first blank portion (B1); and cutting off the first blank portion (B1) at the end facing away from the second blank portion (B2) . <IMAGE></p> |
申请公布号 |
EP1593442(B1) |
申请公布日期 |
2007.08.08 |
申请号 |
EP20050445021 |
申请日期 |
2005.04.19 |
申请人 |
SANDVIK INTELLECTUAL PROPERTY AB |
发明人 |
KUGELBERG, JOEREN;ERICSSON, ROINE;MICSKI, ANDERS;FAIR, JONATHAN |
分类号 |
B21C23/14;B23B51/00;B21C23/01;B22F3/20;B22F5/10;B23P15/32;B23P15/34 |
主分类号 |
B21C23/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|