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13 ENGLISH
NOTICE:
When replacing the punch and the die,
make sure that the correct size, thickness and
hole shape is selected. Shaped punches and dies
must be properly aligned with each other.
3.
Secure the oblong die firmly with the set bolt and
tighten the nut.
4.
Place the oblong punch into the punch retaining
nut. Position the stepped edge of the oblong punch
properly in the punch piston and hand tighten the punch
retaining nut.
NOTICE:
If the stepped edge of the oblong
punch is not properly inserted into the punch
piston, the punch retaining nut cannot be fas-
tened. Make sure the oblong punch is positioned
correctly in the punch rod.
5.
Push the oblong punch against the punch rod and
tighten the punch retaining nut firmly with the nut firmly
with the nut retaining bar supplied.
►
Fig.9:
1.
Nut retaining bar
2.
Punch retaining nut
3.
Loosen
4.
Tighten
6.
Restore the strippers.
WARNING:
If the punch and die are not the
same size or the punch and the die are not posi-
tioned properly, the punch may strike the die caus-
ing both parts to break. In such a case, pieces flying
off from the broken parts may cause personal injury.
CAUTION:
Check the butterfly bolts which
hold the stripper regularly to ensure that they are
tight. Loose bolts may cause the stripper to come
off and damage the tool.
CAUTION:
Make sure the stepped edge of the
oblong punch is positioned correctly in the punch
rod and the punch retaining nut is properly fastened.
OPERATION
Correct use of the tool
Die selection
It is important that the die to be used is correct for the thick-
ness of the workpiece to be punched. Punching the workpiece
of 4 mm to 8 mm thickness using a die for thinner workpiece
can cause the punch to jam in the workpiece. This is due to
the smaller clearance between the die and punch. In such a
case, the workpiece will be pulled up by the retracting punch
as shown in the figure. Special care should be taken when
punching flat bar of mild steel, aluminum and copper.
►
Fig.10:
1.
Workpiece
Correct use of the stripper
Do not position the workpiece with one end or both
ends unsupported by the stripper. If the workpiece is not
properly supported, it will move when the punch returns.
It may cause the punch to jam and damaging the tool.
►
Fig.11:
1.
Stripper
2.
Workpiece
Punching a hole
CAUTION:
Before punching, always make
sure that the proper punch and die are installed
correctly.
1.
Check the position for punching.
►
Fig.12:
1.
Punch
2.
Flat bar
3.
Die
2.
Loosen the cap screw on the slide stopper and
adjust the slide stopper to the desired position. After
that, retighten the cap screw.
NOTE:
The slide stopper is set to hold the hole
puncher at a constant distance from the edge of the
work piece.
3.
Check that the return lever is fully closed in the
clockwise direction.
►
Fig.13:
1.
Spring pin
2.
Return lever
3.
Open posi-
tion
4.
Closed position
4.
Check that the punch piston is fully retracted.
5.
Place the puncher in the required position on the
workpiece using the slide stopper as a guide. Align the
point of the punch with the center mark of the hole to be
punched.
6.
Continue to pull the switch trigger until the punch
reaches the end of its stroke and returns to the starting
position.
The punch rod will extend and push the punch through
the workpiece.
NOTE:
To aid accurate and easy positioning of the
punch, pull the switch trigger intermittently to jog the
punch down to the workpiece. If the position is not
satisfactory, open the return lever to retract the punch
for another attempt. If the punch doesn’t return to its
starting position with return lever open, pull the switch
trigger to return the punch.
NOTE:
If the punch doesn’t return after punching
finishes, release the switch trigger to stop the motor
and pull the switch trigger again.
If the punch doesn’t return even after performing
above procedures, perform the procedures for stop-
ping the operation before the completion of punching
mentioned below.
Stopping the operation before the
punching is finished
If you want to stop the operation before the punching is
finished, perform the procedures below:
1.
Turn the return lever counterclockwise until it hits
the spring pin and then immediately back to its starting
position.
Doing this releases the internal pressure of the tool. If
the punch retracts from the workpiece under its own
power, allow the punch to fully return. After that, turn the
return lever back to its starting position. In this case, the
following step is not necessary.
2.
Continue to pull the switch trigger until the punch
returns to its starting position.