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JESSE ENGINEERING
CO.
1840 Marine View Drive, Tacoma WA 98422
Phone: (253) 922-7433 Fax: (253) 922-2536
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CNC Benders
Click
here to watch video
1 (may take a few minutes to
download)
Click here to watch video
2 (may take a few minutes to
download)
Click here to watch video
3 (may take a few minutes to
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Fig. 1 Jesse Engineering CNC
Pipe Benders. 20' load length is standard. |
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BENDERS FOR TODAY
1000CNC series
benders are CNC controlled 3-axis benders -
hydraulically powered on all axes. With the proper bending
tools, they have the power, accuracy, and rigidity to produce
wrinkle free bends, with a minimum of ovality and wall thinning, in
pipe and tubing of various metals and alloys.
Jesse Engineering benders are engineered
and built to state of the art machine tool standards, including JIC.
Their capacities are stated in terms of Sch. 80 pipe - not a
thin-wall tube whose section modules may only be half as great.
Standard capacities are: 3", 4", 6", 8" IPS (60.3, 88.9, 114.3,
168.2, 219mm) - and larger. |
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AN IMPROVED DESIGN
Benders are more rugged, and versatile
than traditional "swing arm" benders. Because no swing arm or
pressure die mechanism hangs below the plane of the bend die, the
main frame of a 1000CNC series bender is positioned where it ought
to be, directly beneath and supporting the pressure die slide. Thus, all the bending forces - exerted by the spindle and
resisted by the pressure die - are directly "resolved" within a
single, compact heavy duty, tubular beam. Jesse Engineering
1000CNC series benders also have the largest spindle and bearing
diameters, the greatest spread between bearings, and the smallest
distance from bend die to upper spindle bearing - all to insure the
greatest possible rigidity. |
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INTEGRAL ("OVERHEAD") CLAMP
By mounting the hydraulic clamping
mechanism on the rotating bend die itself, Jesse Engineering has
eliminated the conventional swing-arm. There are many
advantages to this system.
Built-in clamp
alignment in the matching mounting surfaces of the clamp
mechanism and bend die assure that no vertical or horizontal clamp
set-up adjustment is required. Therefore tool changing is
faster and easier.
The clamp opens
upwards, eliminating interference with the forward feed of the bent
workpiece. Potential interference between the clamp and the
advancing workpiece is a major shortcoming of traditional swing arm
benders. This problem is usually overcome by the use of a cam
or linage type drop-down clamping mechanism or by a separately
pivoted coaxial swing arm and main shaft. Both are complex,
compromise "fixes". Jesse Engineering's overhead clamp system
eliminates this problem.
Clamping forces
are self contained - not carried through the die mount, the
spindle, or any other part of the machine. Thus, there is
never any bend-die tilt caused by clamping forces.
No overhead tie
bar is required with an overhead clamp, because there is no
clamp-pressure induced bend die tilt - even when bending the
heaviest or most "critical" workpieces.
Tooling remains
properly aligned because the bend die rotates in a level plane
throughout the bend.
Machine and
tooling maintenance are reduced. There are no swing arm
slides or toggle linkages to sear or break, and less stress and wear
on the tooling.
Overhead clamping
is safer.
The dangerous
"pinch point" between the swing arm and
pressure die arm is gone. |
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Fig. 2 Jesse Engineering 1004 CNC Pipe
Bender
The "Overhead" clamp opens upwards;
eliminating the interference with the forward feed of the bent
workpiece; a common problem with traditional swing arm benders. |
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The operator has
direct control of the clamping forces. They are easily
read on a pressure gauge and easily set with a relief valve,
assuring consistent, accurate set-ups. (Toggle type clamp
mechanisms generate unreadable, and necessarily excessive, forces at
their top-dead-center, pre-lock up position.)
PRESSURE DIE
SYSTEM
The pressure die mounts on a massive master-bar carrier riding on
oversized ways which are attached directly to the main beam - not to
a cantilevered arm.
The direct acting
pressure die cylinder is mounted in the centerline plane of the
tube to directly resist the bending forces.
The pressure die
carrier slide and the masterbar are long enough to permit making
3xD 90º bends at the machine's rated capacity. (Greater lengths
are available).
All set up
pressure adjustments are made from the control console.
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Pressure die/carriage collision protection
software prevents
damaging collisions which can otherwise occur through operator error
- i.e. due to closing the pressure die when the carriage has been
advanced into the pressure die area.
PRESSURE DIE ASSIST (OR BOOSTER) FOR REDUCED WALL THINNING
Unlike other benders,
the pressure die assist and booster systems on Jesse Engineering
1000-PC series benders are not "add-ons". The pressure die
assist/booster cylinder is integrated into the pressure die carrier
head - parallel to the centerline of the workpiece, where it ought
to be, so that it won't impose any asymmetrical loads. The
massive pressure die carrier ways on Jesse Engineering 1000
series benders can accommodate the loads imposed by a booster
system. Both the lateral pressure die assist/boost pressure
are adjustable from the CNC control.
Pressure die assist bending
involves the use of controlled push-force applied to the pressure
die. This reduces tool drag and helps control workpiece
thinning. |
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However, since the
pressure die is not clamped to the workpiece, total assist force is
limited by the co-efficient of friction between the pressure die and
the tube.
Pressure die assist bending is not the same as boost bending.
Booster bending
(optional) involves a continuous push-force applied directly to
the workpiece through a booster clamp. To achieve maximum
booster effect, the booster cylinder and its mounting system must be
able to exert a sufficient load to bring the workpiece close to
compressive yield. With the Jesse Engineering boost system,
the booster clamp is mounted directly on the rear of the pressure
die, which then provides continuous column strength reinforcement of
the workpiece under high booster loads. A sequence of
up to ten pre-selected boost pressures are automatically applied as
designated degree-of-bend points are reached.
"Shaped groove"
no-mandrel bending (optional) combines special tools with pressure die
assist (or optional boost for shorter radius bends) permitting
non-mandrel bending of a broad range of pipe and heavier walled tube
while minimizing wall thinning and ovality. |
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CARRIAGE/MANDREL SYSTEM
The carriage/mandrel beam incorporates the mandrel extractor
cylinder and mandrel rod supports together with the ways for the
carriage.
The basic bender is complemented
by the carriage/mandrel beam unit, without design compromises to
either. Because the main beam and drive cylinders are
under the pressure die slide, rather than under the mandrel beam, as
in most benders, the carriage is designed to accommodate the
centerline height of the bender's tooling, not vice versa.
When a carriage is added to a traditional swing arm bender, the
centerline height of the bend die must be elevated to accommodate
the carriage collet's height above the main beam. This extra
tooling height compounds the risk of bend die tilt.
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Jesse
Engineering's 1000 series design eliminates that problem. The standard 20'
(6.1m) carriage travel and load length is also not restricted by the bender's
main beam length and does not require an extended frame or other modifications.
The carriage rides on precision
ground, round ways for smooth travel (distance-between-bend
movement) - driven by a powerful hydraulic motor through a rack and
pinion. During the bending cycle, this drive is declutched to
allow free towing of the carriage as the tube is drawn around the
radius die. Carriage boost is also available.
Chuck rotation
(plane-of-bend movement) is also hydraulically driven, through an
extremely low-backlash worm gear. For
greater accuracy, the plane of bend rotation encoder is directly
driven from the worm gear drive shaft, without any secondary drive
mechanism.
Two collet/chuck
options are available, a jaw type chuck for heavy walled or
pre-flanged tube or a collet mechanism for thinner walled tube.
the carriage and chuck/collet have sufficient power and grip to
sustain all movements on both axes within the machine's capacity.
Mandrel
rod/workpiece supports
within the beam automatically retract as the carriage passes
overhead.
20' (6.1m)
over-mandrel load length and carriage travel assure being able
to load full pipe lengths in one continuous motion with no hitch
feeding. Greater load lengths are available.
Mandrel tangent position set up
adjustment is accomplished by a lead screw on the mandrel
extractor cylinder - an improvement over the traditional method of
screwing the mandrel in and out on the end of the mandrel rod.
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Fig. 3 Power centerline radius
adjustment of the carriage and the mandrel unit during set-up is
standard on 1000 CNC series benders. |
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POPULAR CNC SYSTEM
Jesse Engineering has been offering CNC
Pipe Benders since the early 1980's. In 1999 Jesse partnered
with Current Tech to implement BendPro, a sophisticated CNC control. |
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_files/image002.jpg)
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BendPro G2
Click their logo to visit their website |
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Today, BendPro G2 is the most popular CNC bender control in the industry.
Customers tell us that it offers the highest performance and
functionality of any CNC bender control on the market, and is the
easiest to use.
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Backed by the
best support in the industry
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BendPro G2
software (New Generation)
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Industrial PC
with touch screen and bright,
easy to read 15" LCD
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Windows XP
Professional operating system with remote diagnostics
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Networks with
office PCs, measuring machines, and the internet
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Off the shelf components
are readily available worldwide
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Unlimited part storage via resident
disk drives or office network
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High performance servo control assures fast
and accurate production
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High speed I/O
system links to PC via Ethernet
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XYZ
or YBC (LRA) data entry and conversions supported
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Imports programs
from office computers
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Displays and rotates 3D image of programmed part in real time
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Easy to use control
screens with graphical representation of bender
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Open and closed Collet modes supported
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Hitch moves and
recapture in zones supported
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Advanced diagnostics make troubleshooting
problems a snap
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Interfaces to measuring machines made by
Multi Systems, Romer,
Axila, Addison, and others...
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Interfaces to
robotic loaders and unloaders (Including CNC Bender Cells)
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Office software
available for 'offline' programming and pre-bending checks
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Office software
available for simulation, checks for part/machine interference
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Teach Mode for easy programming of complex
interference moves
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And much more...
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Standard
Features:
BendPro G2 CNC
Separate Hydraulic Power unit
Overhead Clamp
Rack
and Pinion automatic lubrication
Drive
Chain automatic lubrication
Mandrel lubrication
Powered Cross Slides
Pressure Die Assist |
Standard Scope of
Supply:
Main
Frame
Pipe
Positioning Carriage & Frame
Mandrel Extractor & Rod
Hydraulic Power Unit
BendPro G2 CNC control
Overhead Clamp
Start-up kit
Factory Training
Operation & Maintenance manuals |
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Specifications |
1003CNC |
1004CNC |
1006CNC |
1008CNC |
1010
CNC |
| Maximum Pipe
Size |
3/80 |
4/80 |
6/80 |
8/80 |
10/80 |
| Maximum OD |
4.0" |
5.0" |
8.0" |
10.0" |
12.0" |
| Minimum OD
(suggested) |
0.84" |
1.030" |
1.900" |
3.500" |
4.500" |
| Wall Thickness @
Max OD |
.1875" |
.1875" |
.250" |
.250" |
.250" |
| Maximum CLR |
15" |
12" |
18" |
24" |
30" |
| Maximum Spindle
Rotation |
≥193º |
≥193º |
≥193º |
≥193º |
≥193º |
| Maximum Length
over mandrel |
20' |
20' |
20' |
20' |
20' |
| Working Height |
42" |
42" |
42" |
52" |
60" |
| Tooling
Centerline Height |
2.500" |
3.000" |
4.375" |
6.000" |
7.000" |
| Mandrel Stroke |
22" |
24" |
28" |
30" |
36" |
| Follower Stroke |
19.5" |
25" |
33" |
44" |
55" |
| Pressure Die
Stroke |
12" |
13" |
30" |
35" |
43" |
| Hydraulic Tank
Capacity |
40 gal. |
80 gal. |
120 gal. |
180 gal. |
180 gal. |
| Hydraulic System
Pressure |
3000 psi |
3000 psi |
3000 psi |
3000 psi |
3000 psi |
| Length Rearwards |
29' |
29' |
30' |
31'-4" |
32' |
| Length Forwards |
10" |
15" |
18" |
23" |
24" |
| Mandrel Rod OD |
1.66" |
1.90" |
2" |
2.31" |
3" |
| Mandrel Thread |
1.25"-12 |
1.75"-10 |
2"-12 |
2"-12 |
3"-12 |
| Standard Clamp |
# 2 |
#
3 |
#
4 |
#
5 |
#
6 |
| Overall Width |
78" |
112" |
11' |
17'-4" |
18'-8" |
| Height |
54" |
56" |
60" |
78" |
84" |
| Weight (lbs) |
11,000 |
16,000 |
24,000 |
28,000 |
32,000 |
| Speeds |
| C-Axis Fwd/Rev (rpm) |
1.3 / 3.2 |
1.0 / 3.4 |
.60 / 3.7 |
.60 / 2.2 |
.60 / 2.2 |
| B-Axis (rpm) |
3 |
3 |
2 |
1.5 |
1.5 |
| Y-Axis (fpm) |
60 |
60 |
40 |
40 |
40 |
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Specifications, capacities, and
design features described are subject to change without notice. |
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