• Nugen Machineries Limited

NC Hydraulic Shears, Variable Rake Angle

NuGEN Machineries manufactures Trimans variable rake angle NC Hydraulic Shearing Machines. These are built as per international standards in a range of 4 mm to 16 mm sheet thickness and length of 1500 mm to 5000 mm. Two hydraulic cylinders mounted on the cutting beam provide the shearing force. Synchronising of the two cylinders by differential area principle simplifies the hydraulic circuit. The rake angle of shearing blade can be adjusted by a selector switch on the panel box. This enables cutting of higher thickness than nominal capacity at the same time facilitating twist-free shearing of thin sheets. Three pre-loaded roller systems guide the cutting beam accurately on both sides at an angle of 1-1.5 degree to the vertical to avoid the non-cutting edges of the blade from rubbing against the sheet and avoid trapping of cut sheets between the bottom blade and back gauge. All four sides of top and bottom HCHCr blades are usable reducing regrinding and part replacement. The easiest and fastest blade clearance arrangement is offered on this range of shears. The blade clearance is calibrated for different thickness and can be accurately set by lever. The hydraulic hold downs are located very close to the blade and provide positive griping of sheets enabling distortion-free shearing of narrow strips. Independent control of hold downs facilitates shearing on scribed lines. The shear automatically returns on completion of the cut irrespective of job length, reducing the idle travel. Trimans HVR Series are offered as standard execution with main drive motor, electrical control panel, operational console, foot switch, motorised back gauge with digital readout, pre-selected selector switch controlled variable rake angle system, fine stroke adjustment with calibration, hold-down cylinders, shadow line indicators, front sheet supports, left squaring arm with steel rule, four edge HcHCr blade, hardened transfer bars, etc. Above all the machines are totally lubrication free.