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ROLLS The heart of WDM 4 roll plate bending machine is the rolls themselves. These rolls are machined from 1045/50 steel bars or forgings. They are crowned to compensate for deflection and supported on sealed, self-aligning spherical bearings requiring minimal maintenance. ![]() ANGLING OF ROLLS The hydraulic circuit is fitted with a half turn valve that allows all adjustable rolls to be angled for cone rolling, etc. ![]() ROLL DRIVE The top and bottom center rolls are driven by individual low speed high torque type hydraulic motors coupled to rails with ridged couplings and planetary type speed reducers. ( 4", 5", and 6" roll machines do not have speed reducers) Top and bottom roll speeds are hydraulically synchronized and equalized. ![]() |
![]() ROLL SUPPORT AND ADJUSTMENT The bearings that hold the rolls are supported on a set of master and slave hydraulic cylinders with very effective seals and travel in a radial path. ![]() RESTORING PARALLELISM OF ROLLS Restoring parallelism of rolls is accomplished by a special valve arrangement designed by WDM which is activated when the roll is lowered to the bottom and held momentarily until all movement ceases. Roll is then parallel with top roll. ![]() ROLL POSITION INDICATORS The roll position indicators consist of an etched dial and painter located on main housing facing operator's position. Various other indicators are available. See options. |
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xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxHYDRAULIC SYSTEM The hydraulic reservoir is an integrol part of the machine frame which help dissipate system heat. This and careful attention efficiency keeps the hydraulic system cool. The pump, valves, and other hydraulic components are sized and designed with maximum efficiency and function in mind. Sound deadening material is incorporated into the pump compartment to reduce sound levels even more. ![]() xxxxxxxxxxxxxxxxxxxxxxSPEED CONTROLS The part of the entire system is controlled via a flow controll knob located on the main housing near the operator's station. This knob controls the roll rotation and the adjustment speeds. Individual speed control is available as an option on smaller machines and standard on larger machines. (400-10 and above) ![]() xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxFINISH Machine is finished with V.O.C. compliant haze gray epoxy and safety blue enamal. ![]() xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxSAFETY CABLE A safety cable on three sides of the machine allows anyone to stop the machine by tripping the wire. It's switch incorporates a feature which makes it impossible to start the machine unless the cable installed with proper tension. |
![]() CONTROL VALVES The control valves are of manual octuarion type and mounted on main machine housing. This standard feature feel and feathering capability to the operator's finger tips. Many other controls are available. See options. ![]() FRAME All this is housed in a compact, streamline, fabricated and machined steel frame composed of steel plates and robust structural sections. ![]() ELECTRICAL SYSTEM The electrical system is housed in NEMA 12 enclosures and is installed in accordance with NFPA-79 specifications. Motors are effecient, totally enclosed, fan cooled, hostile environment type. ![]() |
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xxxxxxxxxxxxxxCONE ATTACHMENT The cone attachment consist of an indexable and replaceable hardened steel nose mounted on a bronze bushed steel sleeve which slides onto the reduced diameter portion of the top roll next to the drop end and removed when not rolling cones. ![]() xxxxxxxxxxxxxxFREE STANDING CONSOLE This is similar to the above feature except roll movement and rotation functions are controlled by joysticks mounted on the console. The drop end controls, motor start stop, and emergency stop buttons are also mounted on the console. When the machine is equipped with D.R.O. indicators (see below) and controls they also installed in this console. ![]() xxxxxxxxDUAL GUARDED FOOT PEDAL This feature is available for forward and reverse rotation of the rolls, allowing operator to use both hands to manipulate workpiece. ![]() DIGITAL READOUT WITH PRESETS This feature can be used to replace the dial pointer. In addition to giving the digital roll position it can also be pre-programmed with 2 preset positions allowing the operator to return repeatly and with accuracy to the pre-set position, greatly increasing productivity. It reads roll position at inboard (drive-end) Series 421, or inboard and outboard (drop-end) Series 422, useful for cone rolling. LENGHT INDICATION D.R.O. A digital readout (Series L) can be provided to indicate length rolled in hundredths of an inch. This aids operator in rolling flat-radius, flat-radius-flat, or variable radii type workpiece. ![]() |
![]() ROVING PENDANT CONTROL This is a popular option used to increase the mobilty of the operator while forming the workpiece. It allows the operator to raise and lower all adjustable rolls and rotate roll in forward and reverse while moving anywhere within the range of the attaching cord. ![]() SWINGING CONSOLE TYPE CONTROL This console is mounted on the drop end housing of the machine and swivels about 120 degrees allowing the operator to view both sides of the machine while forming the workpiece. This control has all of the advantages of the manual type valves with additional advantage of some movement. The optional D.R.O. indicators are installed on this console. ![]() DIGITAL READOUTS The dial pointer type controls can be replaced with electronic digital readouts on inboard (drive-end) Series 421, or inboard and outboard (drop-end) Series 422, useful for cone rolling. ![]() LENGTH INDICATION DRO WITH PRESET This control is same as Series L , at left, except that additionally it incorporates 2 pre-programmable presets (Series LP) which stop the machine when preset length is reached. Also available is model Series LP6 which has 6 preset positions instead of 2. (These features can not be used with manual valve models) AUTOMATIC CYCLE CONTROL The Series 425-4 control is used for high volume production. After entering the workpiece the operator depresses the guarded foot pedal which initiates the cycle. The machine completes all forming fuctions automatically. It is also possible to use this machine manually or in a manual with preset mode when automatic operation is not desirable. If the machine is equipped with a feeder or parts ejector they also operated by this control. The control console can be mounted on drive-end, drop-end, or be free-standing. |
![]() Workpiece is entered into the machine and squared against far bending roll. Center (pinch) roll is raised to grip workpiece. |
![]() Roll is reversed until leading edge of workpiece nears center of roll. |
![]() Far bending roll is lowered. Near bending roll is raised to pre-bend position. |
![]() Rolls are rotated forward until pre-bend is complete. |
![]() Near bending roll is lowered. Far bending roll is raised to rolling position. |
![]() Workpiece is rolled to completion. |