| 摘要 |
A mandrel and lower die are introduced from the bottom into a die hole and metal powder is filled. Upper and lower punches are simultaneously struck to form annular component. After removal of upper punch, the mandrel is pushed out by mandrel pusher and the annular component is pushed out of the die by lower punch. Independent claims are also included for the following: (a) impact machine; and (b) equipment in impact machine. |
