PierceFORMING™ [cylindrical
neck forming]
 PIERCE HAS BEEN A LEADER with innovative machining processes for
decades. PierceFORMING™ is another example of our ability
to provide cost effective processes and methods that give our customers
a better way to produce parts and assemblies.
In cylindrical neck forming, a part is loaded into the hollow spindle
where it is located and held in a chucking system. The part is
rotated at a specified speed and the area to be formed is pre-heated
to a specified temperature using direct heat. The forming operation
is then performed by rollers mounted on a swivel slide running
on heavy duty bearings. For a further description of the cylindrical
neck forming process see More about Neck Forming.
Pierce Industries’ necking-in process was developed for direct
heat assisted forming of thin or thick walled cylindrical tubing.
Starting from a tube, “necks” or journals as well as
gas-tight bases can be formed.
The PierceFORMING™ process is typically
used to produce pressure and fuser roller cores in the printer/copier
industry. Other applications include pressure vessels such as accumulators,
fire extinguishers, CNG cylinders, and other rotationally symmetrical
hollow forms where the wall thickness needs to be controlled during
the forming process.
PROCESS ADVANTAGES
- Significantly less base material required.
- Structural stability: has a direct advantage
over cold spin forming -- elongation of material fibers is reduced
through heat forming resulting in structural stability of base
material
- Less Brittle: creates narrow heat affected zone, eliminating
brittleness and potential failure in other areas of the part.
- Range of wall thicknesses: can be achieved throughout the part
prior to machining to maximize or minimize the heat transfer.
- Reduced machining cycle time: profile of final formed part
is close to profile of finished machined part
- $ Savings: one piece construction versus 3 piece designs with
a tube and two end-pieces
More
about PierceFORMING™
 The motion and speed of the forming device is controlled and optimized
as required with the aid of the CNC controls. The control of the
feed rate and direction of the forming device allows for flexibility
of differing wall thickness in the area of reduction. By virtue
of the swiveling action of the slide, the forming device is maintained
at the correct approach angle to the part to be formed at each
stage of the process.
On completion, the formed part is ejected from the spindle, placed
onto a cooling conveyer and then fed to final machining. With the
profile of the finished piece being controlled to near machined
tolerance, machining operations and waste are reduced significantly.
APPLICATIONS
Pierce has been successful with various wall thicknesses for stainless
steel, cold rolled steel, and aluminum tubing.
Key applications include:
- Business machines
- Pneumatic pistons
- Musical instruments
- Conveyors
- Automotive
Call 585-458-0888 | 465 Paul Road | Rochester, ny 14624
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