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Pat Mooney Inc. — The Saw Company offers the Nishijimax NHC-100ND Cutoff System, which features an exclusive patent-pending remnant reduction device to greatly reduce the amount of the remnant in auto cycle. When the amount of incoming bar is less than 90mm + cut length, the NHC-100ND automatically shifts the length setting device to a special NC controlled gripper vise on the out feed side of the saw blade. This device will grip the bar end from the out feed side of the saw blade and continue until the final bar end is 30mm. This process is automatic and adds @ 1 sec to the final parts of the bar end. The NHC-100ND will continue to cycle as long as bars remain on the table or until a pre-determined number of cuts are made.
Available exclusively from Pat Mooney Inc., Nishijimax Systems cut more parts per hour and more parts per blade than a standard production saw. A single Nishijimax CNC Carbide Cutoff System can replace three to four production saws.
The Nishijimax NHC-100ND features a saw spindle drive unlike any other. The 15.5 HP induction motor drives the saw blade spindle via reduction gearbox. The RPM output of the gearbox is controlled by a FREQROL inverter drive. This system offers precision torque control. Constant torque is maintained throughout the RPM range. This is especially important when sawing through materials at high sawing rates.
NHC-100ND's precise feed rate is set automatically, and input chip load is maintained through Nishijimax's NC Saw Spindle Feed Axis. The saw blade feed rate is controlled via an AC Servo Motor with encoder, a Mitsubishi programmable servo drive and a precision ball screw. Compared to hydraulic systems, there is no fluctuation for temperature or condition of the oil, and job set up takes less than five minutes with the CNC Controller.
Other features of the NHC-100ND include Nishijimax's original powder metal saw blade brake for zero vibration when the blade enters the cut. A gearbox oil chiller maintains constant gearbox temperature throughout 24/7 operation, thereby extending the life of the gearbox and the saw blades. NHC-100ND saw blade lubrication is supplied via air to the cutting edge of the blade with a precision-metered system. No flood coolant is used. The lubricant is used during the sawing of the material.
The material clamping system is a hydraulic 4-point system with both horizontal and vertical clamps. Proximity switches monitor all clamping functions. Clamping pressure is adjustable. The saw blade housing is mounted to the massive NHC-100ND saw head. The housing contains the saw blade. The saw blade is guided into the work piece with ceramic guides. These guides provide 6-point contact to eliminate blade wobble or deflection during sawing.
TA-4 and ST-4 Kanefusa blades are available from Pat Mooney for use with Nishijimax Systems. These high-performance saw blades allow material to be cut faster and with much less material loss due to kerf. The tooth design allows every tooth to remove and entire chip.
Related Glossary Terms
- computer numerical control ( CNC)
computer numerical control ( CNC)
Microprocessor-based controller dedicated to a machine tool that permits the creation or modification of parts. Programmed numerical control activates the machine’s servos and spindle drives and controls the various machining operations. See DNC, direct numerical control; NC, numerical control.
- coolant
coolant
Fluid that reduces temperature buildup at the tool/workpiece interface during machining. Normally takes the form of a liquid such as soluble or chemical mixtures (semisynthetic, synthetic) but can be pressurized air or other gas. Because of water’s ability to absorb great quantities of heat, it is widely used as a coolant and vehicle for various cutting compounds, with the water-to-compound ratio varying with the machining task. See cutting fluid; semisynthetic cutting fluid; soluble-oil cutting fluid; synthetic cutting fluid.
- cutoff
cutoff
Step that prepares a slug, blank or other workpiece for machining or other processing by separating it from the original stock. Performed on lathes, chucking machines, automatic screw machines and other turning machines. Also performed on milling machines, machining centers with slitting saws and sawing machines with cold (circular) saws, hacksaws, bandsaws or abrasive cutoff saws. See saw, sawing machine; turning.
- feed
feed
Rate of change of position of the tool as a whole, relative to the workpiece while cutting.
- kerf
kerf
Width of cut left after a blade or tool makes a pass.
- lapping compound( powder)
lapping compound( powder)
Light, abrasive material used for finishing a surface.
- numerical control ( NC)
numerical control ( NC)
Any controlled equipment that allows an operator to program its movement by entering a series of coded numbers and symbols. See CNC, computer numerical control; DNC, direct numerical control.
- sawing
sawing
Machining operation in which a powered machine, usually equipped with a blade having milled or ground teeth, is used to part material (cutoff) or give it a new shape (contour bandsawing, band machining). Four basic types of sawing operations are: hacksawing (power or manual operation in which the blade moves back and forth through the work, cutting on one of the strokes); cold or circular sawing (a rotating, circular, toothed blade parts the material much as a workshop table saw or radial-arm saw cuts wood); bandsawing (a flexible, toothed blade rides on wheels under tension and is guided through the work); and abrasive sawing (abrasive points attached to a fiber or metal backing part stock, could be considered a grinding operation).
- sawing machine ( saw)
sawing machine ( saw)
Machine designed to use a serrated-tooth blade to cut metal or other material. Comes in a wide variety of styles but takes one of four basic forms: hacksaw (a simple, rugged machine that uses a reciprocating motion to part metal or other material); cold or circular saw (powers a circular blade that cuts structural materials); bandsaw (runs an endless band; the two basic types are cutoff and contour band machines, which cut intricate contours and shapes); and abrasive cutoff saw (similar in appearance to the cold saw, but uses an abrasive disc that rotates at high speeds rather than a blade with serrated teeth).
