Scotchman 6509-24FF - Page 27

Page 27
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NOTE: WHEN PUNCHING LARGE DIAMETER HOLES, OR IN CASES OF HIGH PUNCH
SHOCK, IT WILL HELP IF THE STROKE OF THE MACHINE IS ADJUSTED SO THAT
THE PUNCH STOPS JUST ABOVE THE PLANE OF THE DIE, APPROXIMATELY FIFTEEN
THOUSANDTHS OF AN INCH (.3MM).
C. DO NOT PUNCH ANYTHING THICKER THAN THE PUNCH DIAMETER.
This "rule of thumb" can be extended, but the punch supplier or Scotchman should be consulted first,
(i.e. do not punch plate thicker than 1/2 inch with a 1/2 inch diameter punch). This rule of thumb applies
to mild steel and must be reduced when punching alloy steels.
Contact the factory or your local dealer before attempting to punch any type of alloys.
D. LUBRICATE THE PUNCH AND DIE.
This will hold stripping forces to a minimum and greatly extend punch life. Lubrication must be applied
after every 5 to 10 holes.
E. PUNCH FULL AND COMPLETE HOLES. DO NOT PUNCH PARTIAL HOLES.
The side thrust encountered in punching a partial hole can force the punch over against the die and
result in punch or die breakage. This may result in serious bodily injury!
F. MAINTAIN SUFFICIENT MATERIAL BETWEEN THE PUNCHED HOLE AND THE EDGE
OF THE WORKPIECE.
The edge of the punch should be clear of the edge of the workpiece by a distance equal to the thickness
of the material. Any edge distance less than this will result in a deformed workpiece.
G. STAY WITHIN RATED PUNCHING CAPACITIES.
Your 6509-24M Ironworker is designed to operate in mild steel. Within conservative limits, it can also
operate in medium carbon annealed steel and some forms of abrasion resistant steels. Conditions of high
shock can be encountered when punching alloyed steels and, accordingly, the machine rating must be
reduced. THE MAXIMUM THICKNESS THAT CAN BE PUNCHED IS 3/4 OF AN INCH (20MM)
MILD STEEL.
Punch to die clearance depends on material thickness.