• Manu Engineering Works

Precision Drill Grinder

Manu Engineering Works has launched an import substitute, bigger Precision Drill Grinder, Model DG-80. The new machine has capacity to grind drills of size 10 to 80 mm. It is used for precision grinding and sharpening of all shank type cutting tools like standard drills, slot drills, core drills, counter shank drills, multi-step drills and taps used in machine shops. It can quickly grind conventional points completely in one operation giving repeatable results. The precision 6-jaw, self-centring chuck takes drills from 10 to 80 mm. The main chuck spindle incorporates frictionless linear bearings having spring loaded precision imported roller thrust bearings on both sides for smooth operation of the work head for a long period. As the drill rotates, both the lips are ground in one operation uniformly producing the correct cutting angle and precision point. The work head is fitted on a robust compound slide. The specially designed 2 HP, 3-phase, 440 V AC electric motor has three heavy-duty ball bearings with dynamically balance rotor for smooth and vibration-free grinding finish and long life. The point angle can be varied from 90 to 180° by locking swivelling work-head at the required angle. The clearance angle can be changed by adjusting the back plate of chuck by the control arm, which automatically changes the cam effect. For web thinning, a separate disc level is provided behind the standard wheel for point thinning immediately after the point grinding resulting in an accurate ground drill point. The machine is supplied with a cam suitable for RH drills. Machine lamp and coolant pump are supplied at no extra cost with the machine. Extra accessories such as special cam for 180 flat bottom drill grinding, cam for grinding pilot drill of any angle, 4 flute tap and core drill grinding cam can be supplied at extra cost, if ordered with the machine. The other three models are: Model DG-40, capacity 3 to 40 mm; Model DG-50, capacity 5 to 50 mm and the smallest one, Model PDG-19, for the small scale units, with capacity 3 to 19 mm. Manu Engineering Works also manufactures: tool grinders, carbide end-mill cutter grinders, compact AC geared motors, bench grinders and polishers, and industrial exhaust fans and air circulators.