Adjustable length punch assembly

本发明公开了一种长度可调的冲压组件。根据本发明的长度可调的冲压组件可以用于一冲床中，该冲床包括一适于容纳冲压组件的夹具(108)和一适于沿着一压头轴线纵向运动的压头(120)。根据本发明的长度可调的冲压组件优选包括一个设置成与一驱动主体组件(126)螺纹接合的冲压主体组件(124)，该驱动主体组件(126)具有一适于经受冲床的压头冲击的表面(128)。可以通过使一个主体相对于另一个主体转动来调节冲压组件(102)的长度。该长度可调的冲压组件优选包括一锁紧机构(150)，用于可选择地防止冲压主体组件相对于驱动主体组件转动。该锁紧机构优选包括与其中一个主体连接的锁轴(134)和与另一个主体滑动连接从而可沿着一锁键通道滑动的锁键(148)。该锁键通道(152)在冲压组件由夹具容纳时优选布置成相对于压头轴线(122)成一夹角。 Adjustable length punch assemblies are disclosed. An adjustable length punch assembly in accordance with present invention may be used with a punch press including a tool holder adapted to receive punch assembly and a ram adapted to move longitudinally along a ram axis. An adjustable length punch assembly in accordance with present invention preferably includes a punch body assembly disposed in threading engagement with a drive body assembly having a surface adapted to be struck by ram of punch press. The length of punch assembly may be adjusted by rotating of one body relative to other body. The adjustable length punch assembly preferably includes a lock mechanism for selectively preventing rotation of the punch body assembly relative to the drive body assembly. The lock mechanism preferably comprises a lock shaft coupled to one of bodies and a lock key slidingly coupled to other of bodies such that lock key slides along a lock key path. The lock key path is preferably disposed at an angle relative to ram axis when punch assembly is received by tool holder.