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| Urethane
V-Pads for Scratch-Free Forming |
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The most
economical urethane die-inserts, for forming Scratch-free
V-bends and small radius bends on press brakes. |
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V-Pads are triangular
shaped die inserts designed to fit in standard steel V-dies.
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Stock sizes are for
½", 1" and 2" opening V-dies. |
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Lengths:
Up to 8'. |
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| Scratch
Free Bends |
The
most economical press brake forming method, for polished stainless
steel, Aluminum and Pre-finished surfaces (Painted, vinyl-coated
surfaces). Triangular shaped pads are used on steel V-dies.
Bending starts at the line of contact of Punch and sheet metal,
and tangentially moves outwards. There is no sliding or dragging
of sheet metal, as in steel dies.
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| Precise
Bends |
| Bends precisely
conform to the sharpness or radius and angle of the punch, with
minimum or no spring back. Forming stars from the point of contact,
with no blank slippage. Forming of blanks with cu-outs or uneven
ends is possible. On very long bends with close tolerances,
as long as the punch is precise, accurate bends can be made.
(We have customers that have used the V-pads for making bend
16' long with good results). Even on older machines with uneven
or non-parallel beds and rams, precise bends are possible without
shimming. |
TOP 
Radius Bends
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| Precise
radii can be bent with the same V-pad, without the need of matching
expensive die sets. The inside radius of a given bend can be
machined on the punch and the V-pad functions s a universal
die. |
| Short
Flanges |
"Short Bend
Legs" (bend legs of three to four times metal thickness)
are possible.
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Easy
to Install and Use
Existing steel punches, and dies (1/2", 1", 2",
openings, 85 degrees or 90 degrees can be used. Set up is simple.
Just place the V-Pads in the corresponding size to steel V-dies,
and without the need for expensive die alignment or shimming,
you are set to go. For
bends longer than the V-pad length, just butt them end to
end, making sure that the ends are square and prevent lateral
movements by using double faced tape (P.P.C part no. P. T.
-2000). Depth of punch penetration, into the V-pad should
be as least as possible to make a given bend, for maximizing
the pad life.
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| Never
penetrate more than half the pad height. Width of punch penetration,
into the V-pad should be limited to half the pad width. |
Gauge
of Metal
For press brake forming: Maximum recommended gauges for M.S.
and Aluminum.
½" pad: 18 GA., 1" Pad: -16 GA, 2" Pad:-14
GA.
For Stainless Steel: Use the
next lower Gauge. |
Tonnage
(Approximate tons per foot length for V-bends): 20 GA. - 4tons,
16 GA.- 6tons, 14 GA.- 9 tons. |
Lengths
PV-200=4' (48" ), PV-200H=4' (48" );
PV050& PV-100=96".
For longer lengths, butt them end to end and use double face
tape under the pad.
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1/2" V-PAD
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1" V-PAD |
2" V-PAD |
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| The
figure to the right is a new design of a 2" pad with
a molded hole that reduces tonnage. Ideal
for radius bends of up to 1/4"R.
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Die-Thane Tooling 
