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How to check and operate nail punch

Dec 17, 2025

Inspection and Operation of the Punches on high speed nail making machine

 

The punch assembly is directly connected to the machine tool crankshaft and is the reciprocating stamping part, playing a decisive role in the nail making process. The punch assembly mainly performs the following functions: adjusting the thickness of the finished nail head; adjusting the diameter of the nail head; and adjusting the size of the nail head of the pre-punched nail blank.

 

1. First, crank the "manual wheel assembly" (see 4.1 Main Body Structure Description) to make the "connecting rod" move like a cam and rotate it to its left limit position. At this time, measure the gap between the main "punch" and the "main nail die," calculate the thickness of the nail head, and then adjust the "connecting rod joint and cap." The thickness changes by 3mm for every 360° rotation (0.03mm per tooth); rotation decreases the nail head thickness, and vice versa. 1. After adjustment, tighten the "combined cap pressure plate";

 

2. Then adjust the shape of the "secondary nail die" nail blank. Here, loosen the "secondary punch locking nut" and rotate the secondary punch.

This adjusts the position of the "secondary punch head" (note that the gap between the two must be controlled between 0.5mm and 1mm); adjusting the "adjusting alloy rod" of the secondary punch adjusts the size of the nail head of the "secondary nail die" nail blank. After comprehensive adjustment, the "secondary punch nail blank" achieves the ideal shape. Tighten all adjusting nuts and bolts;

 

3. Finally, adjust the "main punch adjusting alloy screw" to adjust the size of the nail head of the "main punch forming nail".

Note: All bolts on the punch assembly must be tightened before starting the machine.

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