Page 7 - American Punch Ironworker Tooling Catalog

PUNCH HEAD FAILURE
POSSPIBULENCSOHLIUNTGIOTNI:PS
FAILURE: Punch head PROBABLE CAUSE: Using fractures or or or or breaks off a a a a loose or or or or worn coupling nut
Frequently check and
or or or punch stem PROBABLE CAUSE: Material is thicker than the the working length of the the the punch punch or the the the punch punch is entering into the the die too far re-tighten the the the coupling nut
Verify that the the the face of the the the LET’S
punch stem is smooth and
flat POSSIBLE SOLUTION:
Adjust the the stroke length to to enter into the the die a a maximum of 1/16” T T TA
ALK
RINGING
FAILURE: Material being punched is deformed with each stroke of the press FAILURE
INDICATION:
Double shear indicates insufficient clearance between punch and
die FAILURE
INDICATION:
Uneven burr indicates worn tools or or misalignment of punch and
die POSSIBLE SOLUTION:
Check condition and
and
alignment
of punch and
die FAILURE
INDICATION:
Heavy burr on die die side of material indicates too much
clearance between punch and
die die POSSIBLE SOLUTION:
Decrease die clearance WARNING: It is is the the responsibility of the the machine operator to to to use this tooling safely in in in accordance with OSHA Laws and
and
ANSI B11 5 Safety Standards PROPER SLUG APPEARANCE
CORRECT SETUP:
The punch side of the slug will have a a a a a center point indentation and
a a slight burr When punching mild steel 1/8” or thincker the the die side of of the the the slug slug will will be be dished The periphery of of of of the the the slug slug will will be be shiny or or sheared for a a a a a distance of of 10% to 20% of of the the material thickness POSSIBLE SOLUTION:
Increase punch to die clearance 7