K-7-4 Hydraulic Initial Pinch Plate Roll

K Series

The WDM K series hydraulic initial pinch plate bending machine; models K-5 to K-12 are well designed, robust machines that feature a wedge actuated pinch roll positioning system. This provides for an accurate and parallel pinch roll position. The rear bending roll is positioned with heavy duty master and slave hydraulic cylinder arrangement. The accurately machined rolls turn on sealed spherical roller bearings with extended maintenance period of five years or more, in most cases. The heavy fabricated steel main frame contains a hydraulic reservoir for a quiet integrated hydraulic system. In designing the system, much attention is given to the efficiency of components which results in a cool operation. The Beta 3.2 roving pendant control with pushbutton controls and DRO's to show position of the rolls comes standard. If however you prefer a more sophisticated machine we offer many options and enhancements in control styles and position indication. If you have a special need beyond this we are glad to accommodate it.

Standard Features

1045 steel rolls machined to T63 micro inch finish.
Crowned rolls
Total hydraulic operation
Instant start/stop/reverse
2 roll drive
3 phase 230/430 volts 60hz electrics
Electrics to NFPA-79 specifications
24VDC control circuit
Roll speed infinitely variable 0-22 FPM
Safety/Emergency stop cable on 3 sides of the machine
Overload protected
TEFC main motor
Quiet hydraulic system
Haze gray epoxy and blue enamel finish (V.O.C. compliant)
Sealed spherical roller bearings on all main points
Bending roll tilts for cone rolling
Accurately machined, compact, streamlined, and all welded steel frame
Rolls driven direct via hydraulic motor or gear speed reducers
Roving pendant control
DRO to show roll position
Horizontal starting groove in pinch roll
Hydraulically actuated drop-end
1 year warranty
Made in USA

Options

Hardened only rolls 55-60 Rc. (1045 flame hardened) T63 micro inch finish
Hardened and polished rolls 55-60 Rc. (1045 flame hardened) G32 finish
Other alloys and finishes are available
Additional squaring grooves in lower rolls
Circular grooves in rolls for rolling rods or sheets with wire edges 3/8, 1/2, and 5/8
Other special circular grooves for extrusions etc.
Dual guarded foot pedal for roll rotation and pinch roll up/down
Cone attachment
Pinch roll trim
Third roll drive
Control upgrade
Non-electric version
Side supports
Overhead supports, feed tables, and ejectors
Special electrics
Special customer-supplied paint
Light curtain safety guarding

Also Available

Chromed rolls
Special extra smooth rolls
Special grooves in rolls
High-speed version

K Series Controls Brochure

Roll Bending Digest

*Note, some aspects of the machines have been upgraded since the last brochure revision!

Rolls

All the rolls are accurately machined from steel bars or forgings dependent on size. They are crowned to compensate for deflection during forming pressures, assuring accurate cylinders and workpieces. The rolls turn on sealed spherical roller bearings.

Dual Guarded Foot Switch

The dual foot switch is a feature available for forward and reverse rotation of the rolls, allowing the operator to use both hands to manipulate workpiece.

Beta 3.2 Control

The Beta 3.2 is a manual control and comes with the base machine at no charge.

Push buttons to control:

Control
Emergency stop
Near roll
Far roll
Roll rotation
Drop end

Selector switch to control:

Roll trim
Dial to control system speed.

Digital readout to show position of:

Near roll
Far roll

Features:

Free standing rolling console
NEMA 12 fiberglass enclosure
Stainless steel hand rail
Reseptical for control cord

Recommended use, Job Shops and part batches up to 10 pieces

Single Foot Switch

The single foot switch has a selector to control the function of pinch roll up, rotation forward, and off. This switch is compatible with all controls.

Pre 3.2 Control

The Pre 3.2 is a preset control and an upgrade from the Beta 3.2.

Push buttons to control:

Control
Emergency stop
Drop end
Far roll gauge position

Variable speed joysticks to control:

Near roll
Far roll
Roll rotation

Selector switches to control:

Roll trim
Set point 1 mode
Set point 2 mode
Normal mode

Digital readout to show position and control:

Near roll (2 set points)
Far roll (3 set points)
Roll rotation (3 set points)

Features:

Free standing rolling console
NEMA 12 enclosure
Stainless steel hand rail
Receptacle for control cord

Recommended use - this popular control provides just enough automation to greatly speed through put performance, and accuracy. It is easily programmed and can be used as manual or preset type control. In many cases this control increases roll performance by 500% or more and is usually all the automation that is required. This control is recommended for part batch sizes from 3 to 100 pieces or more.

* pictured with optional rotation readout.

Gallery

Workpiece Accuracy

In the final analysis, the proof of performance is the acceptability of the finished workpiece. With uniform quality of the workpiece blanks, our machines have historically rolled workpieces within 1/2 of 1% of perfect concentricity.

There are many variables that can affect the accuracy and repeatability either minimally or drastically. These include, but are not limited to, the following: varying material thickness; varying material temper; uneven cross section of material, i.e. wide and narrow profile of workpiece or a workpiece with holes or cutouts; and direction of grain of material.

Many of these variables can be overcome by various means. An important element for success is a knowledgeable operator who understands the characteristics of the material being formed and the various functions of the machine. If the workpiece being formed is anything other than uniform material and cylinders, and you are unsure if your pieces can be rolled practically, please provide us with a drawing or sketch and we will be happy to evaluate it.

Waldemar Design & Machine L.L.C. warrants its products to be free from defects in material and workmanship for a period of one year from date of manufacture. Waldemar's obligation is to replace, free of charge, any defective part of any product that its inspection shows to be defective, including the lowest priced round trip transportation to Waldemar's plant in Spencer, TN, from any point in the 48 contiguous states. Waldemar shall not be liable for installation and removal expense, loss of time, manufacturing costs, labor, materials, loss of profits, or consequential damages direct or indirect, because of defective products. There is no other warranty, expressed or implied.