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17.
If you are using keyed punches, manually rotate the punch so that the key seats in the ram before
tightening the nut.
18.
Tighten the punch retaining nut with a wrench. Make sure that there is equal clearance on all
sides of the punch in the die. NOTE: IF YOU ARE USING A HEAVY DUTY SPLIT-RING
RETAINING NUT, TIGHTEN THE BRASS BILLET SET SCREW AGAINST THE THREADS
OF THE RAM AFTER THE NUT HAS BEEN TIGHTENED.
19.
Re-tighten the bolts in the die holder.
20.
Check to be sure of proper alignment. Realign, if necessary.
21.
Return the stripper to the FORWARD position.
22.
Place the disconnect switch in the ON position and the selector switch in the START position.
Power the machine.
23.
Place the selector switch in the SHEAR position. To be sure that the clearance is correct, jog the
machine several times with the foot switch, without letting the punch come out of the die.
24.
Place the selector switch in the PUNCH position.
25.
Oil the punch and die before use and every 5 to 10 holes, thereafter.
(FOR LUBRICATION INSTRUCTIONS, SEE SECTION 5.1.)
26.
Punch three to five holes and re-tighten the punch retaining nut.
27.
The punch and die alignment should be checked intermittently during the punching operations.
To do this, bring the punch down so that it enters the die. Turn off the machine. Check and
tighten the punch retaining nut, the bolt holding the die, the two set screws holding the die insert
and the two bolts holding the die holder. Check for equal clearance between the punch and die.
Place the selector switch in the START position and power the machine. Place the selector switch
in the SHEAR position. Use the foot switch to jog the machine several times, to be sure of proper
alignment.
B.
CHECK ALL PUNCHING TOOLS FOR TIGHTNESS. Tools should be checked at the start of
each operation and intermittently during the work day. Check the punch retaining nut, die,
stripper and die holder. Tools tend to loosen under punching shock. Keep them tight to prevent
punch to die contact. 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.
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 every 5 to 10 holes.
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