85º - 90º PUNCHES AND DIES
Punches and dies of this type are widely used to make bends of
85º - 90º or greater.
By adjusting the ream, angles greater than 85º - 90º are formed by air
bending.
Air bending heavier gauges with these dies minimizes machine load and
material fracture. For the dies shown the die opening is eight
times metal thickness and will produce a bend where the inside radius is
approximately equal to metal thickness. Relief on the sides of the No. 2
punch permits closer back gauging and longer returns while maintaining
load on the punch shoulders.
NOTE: Angles on die openings are the same as the corresponding
punch. |
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GOOSENECK PUNCHES
Gooseneck punches are used in forming
right angle bends, channels or other special shapes where a straight 90º
punch would interfere. Width of face and depth of cutback are the
dimensions shown. A greater cutback can be furnished but it will
reduce the capacity of the punch. Number 43-44 gooseneck punches are
cut back well beyond centerline allowing a greater return flange.
However, this reduces punch capacity. As the length of the return
flange increases, the width of channel must also increase due to the taper
on the inside of the gooseneck. Number 45 requires 12 inch die
space and sufficient ram adjustment to use a general purpose female die.
If press does not have sufficient ram adjustment, a special height will be
required.
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ACUTE ANGLE PUNCHES & DIES
Acute Dies are the most universal type of press brake die, and are
specifically recommended as a starter set. They are used to make
air-form bends from 30º
to shallow bends, and also for the first operation set in hemming.
The degree of the formed angle depends on the depth to which the punch
enters the die opening. All bottom dies cam be furnished with flat
tops instead of tapered sides for increased strength.
NOTE: All bottom die angles are 2º
greater than the corresponding punch. |
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FLATTENING DIES
These dies are used to form a final hemming operation or particular
closure of previously formed acute bends. Both top and bottom dies
have the same number. |
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OFFSET DIES
These dies form two
90º bends in one stroke.
Note that all of our offset dies are 1-1/2" wide minimum as the tonnage
required for this type of bend may approach 5 times that required for a
single 90º bend. Dimensions shown indicate amount of offset from
inside to outside of metal thickness. Hat sections may also be formed if
an optional cut-away is ordered on the bottom die.
Generally speaking, die numbers 50 thru 53 are suitable for mild steel
up to 16 gauge while number 54 may be used with 7 gauge mild steel.
However, with certain modifications to angles and radii the range of these
dies may be extended, depending of course, on press tonnage available.
Many variations of the offset die are also available including
adjustable offset, acute angle offset, open angle offset with heel, etc.
Please submit specs for special die quote.
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4-WAY DIES & DIE
HOLDERS
These dies are useful where different die openings are
frequently required. Any size and configuration of die is available
with the most common being shown in the table at the right.
A Universal Die Holder is recommended for use with the 4-way die as it
allows use of the standard bottom dies without the removal of the die
holder.
Also shown is a Die Block which is used to fill excess die space.
Universal Die Holders and Die Blocks are available in any configuration.
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SPECIAL PUNCHES & DIES
These examples of special dies show some of many available. Please
send a drawing to evaluate your special tooling requirement. |
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TONNAGE CHART, MULTIBLE BEND ALLOWANCES CHART AND PRESS BED
DEFLECTION COMPENSATOR
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