Grizzly G0542, Instruction Manual

Page: 19 / 32

G0542 48" Pan and Box Brake -17-
Basic Bending
Bending operations require the fingers to be
parallel with the edge of the clamping block and
require the setback and clamping pressure to
be correctly adjusted for the thickness of the
workpiece.
To perform a basic bending operation:
1. Lift the clamping handle to open the clamp-
ing leaf all the way.
2.
Insert the workpiece between the fingers and
the clamping block.
3. Align the fingers of the clamping leaf to the
bend mark on the workpiece, and clamp it in
place.
Note— Do not force the clamping handle. If
the handle is hard to put in the locked posi-
tion, the pressure may need to be adjusted
for the sheet metal thickness. The holding
pressure of the clamping leaf needs to be
just tight enough to hold the sheet metal from
moving when bending.
4. Lift up on the operation handles until the
workpiece has reached the desired angle.
5.
Open the clamping leaf and remove the
bent workpiece. Note—
If a pan or box bend
is desired, choose a finger or a selection of
fingers that are as close as possible to the
length of pan or box side lengths.
Figure 23. Clamping pressure adjusting nuts
(one side).
The correct clamping pressure depends on the
workpiece thickness. The ideal pressure will have
medium/hard resistance while pulling the handle,
but will lock into position easily at the end of the
stroke—much like a pair of vice grips. This pres-
sure is adjusted by moving the nuts (
Figure 23 ),
which are located on both sides of the brake.
Adjusting Clamping
Pressure
Tools Needed: Qty
30MM or Adjustable Wrench ............................. 1
To adjust the clamping pressure:
1. Tighten both sides of the clamping leaf with
your workpiece in the brake.
— If the clamping pressure feels right, no
further adjustments are necessary.
— If the clamping pressure feels light, move
the adjusting nuts up.
— If the clamping pressure feels hard, move
the adjusting nuts down.
2.
Remove the workpiece from the brake, lock
the clamping leaf in place, then loosen the
upper nut pressure.
3.
Unlock the clamping leaf and turn the lower
nut a
1
⁄
2
turn in the needed direction.
4. Lock the clamping leaf, tighten the upper nut,
and repeat
step 1
.