FIELD: machines.
SUBSTANCE: invention relates to machines for machining metal parts. The punch block (100), which is connected to the punch holder (50) of the punching machine, contains the punch head holder (1) and the punch head (30; 130; 230; 330). The holder (1) contains a connecting element (4) connected to the punch head (30; 130; 230; 330), an adapter element (2; 20; 120; 220) and a retainer (5). The adapter (2; 20; 120; 220) element has a shape and dimensions that allow it to be inserted and placed in the punch holder (50), and is provided with an internal cavity (3) for accommodating the connecting element (4) with the punch head (30; 130; 230; 330). A manually operated latch (5) without tools is located in the adapter element and is intended for attaching the connecting element (4) with a punch head (30; 130; 230; 330) to the adapter element (2; 20; 120; 220) or detaching from it.
EFFECT: invention makes it possible to reliably install the same set of punch heads on different punch holders and simplify the replacement of punch heads.
18 cl, 22 dwg
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