Appendix A / Adjustment of short-cycle drawn arc welding guns
Appendix A /2
1 Adjustment of stud welding gun
1.1
Standard stud holder
The stud holders of the PH-3N, PH-3, PK-3 and PK-0K stud welding guns are
identical
in construction. When using long welding studs with the short type PK-0K welding gun,
however, it is necessary to shorten the stud holders' stop screw (4) correspondingly.
For PK-3 and PK-0K guns, use the standard stud holder with adjusting
screw, having a length of 45 mm! Ensure that the maximum stud length
does not exceed 35 mm!
For PH-3 and PH-3N guns, use the standard stud holder with adjusting
screw, having a length of 73 mm!
Ensure that the maximum stud length does not exceed 60 mm.
1 Stud
3 Lock nut
2 Stud holder
4 Stop screw
Different stud holders are required for different stud diameters.
Adjust the stud holder as follows:
• Loosen lock nut (3)
• Insert stud (1) into stud holder.
The top edge of the stud flange must project for about 1.5 mm from the front edge of
the stud holder.
For studs that are longer than 15 mm, enlarge the projection. This helps to
reduce wear and tear of the stud holder.
The stud must come into contact with the stop screw (4).
• Adjust stop screw (4) in the stud holder by turning it until the distance from the top
edge of the stud flange to the front edge of the stud holder is 1.5 mm.
• Secure stop screw (4) by means of lock nut (3)