Grizzly T32719, Руководство пользователя

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Model T32719 (Mfd. Since 06/21)
-17-
Basic Bending
All bending operations require the clamping fin-
gers to be parallel with the edge of the clamping
surface and bending block, and the setback and
clamping pressure must be correctly adjusted for
the thickness of the workpiece.
To perform basic bending operations:
1. Determine setback required for bend and
adjust machine if needed (refer to Adjusting
Setback on Page 15).
2. Raise clamping leaf.
3. Insert workpiece between clamping fingers
and clamping surface.
4. Align bend mark(s) on workpiece with fin-
gers, then clamp it in place using clamping
handles.
Note: If clamping handles do not lock, the
clamping pressure may need to be adjusted
(refer to A
djusting Clamping Pressure on
Page 16).
When a bend is made in sheet metal, the inside-
surface of the bend compresses and the outside
surface stretches. To bend metal objects accu-
rately, you need to consider the length of each
bend, especially when more than one bend is
required. This is called bend allowance.
As a rule of thumb, subtract the bend allowance
from the sum of the workpiece outside dimen-
sions to obtain the overall length and width of the
blank needed to make a particular part.
Exact allowances can only be obtained by trial
and error due to differences in sheet metal hard-
ness, whether the bend is with or across the
grain, and the bend radius. Use metalworking
handbooks or the internet to find bend allowances
accurate enough for average use.
Bending Allowance
Do not operate machine unless it has been
securely mounted to a workbench, or it
could tip over on you, causing severe injury!
Hold onto the workpiece so it does not drop
and hit you when it is released!
Bodily injury could result from using this
machine. Always wear safety glasses,
leather work boots, and heavy duty leather
work gloves when operating this machine
or whenever handling sheet metal.
5. With body square to brake and using both
hands, lift bending leaf until workpiece reach-
es desired bend angle.
6. Raise clamping leaf and remove workpiece.