| 摘要 |
<p>A female die (3) is composed of a plate-shaped bearing tip (31), a backup block (32) and a cylindrical holder (33) for receiving and setting in place the tip together with the block, in which the bearing tip (31) made of a hard metal and the backup block (32) also made of the hard metal are such that they can be manufactured simply and easily, and in which only the bearing tip (31) need be replaced with a new one if and when the bearing portion of the die has been abraded. <IMAGE></p> |
