Manu engineering works offers heavy duty drill grinders.It comes with model dg 40 [capacity 3 mm to 40 mm] and model dg 50 [capacity 5 mm to 50 mm]. These are for precision grinding and sharpening of all shank type of cutting tools like standard drills, slot drills, core drills, counter shank drills, multi-step drills, taps, etc, used in machine shops. It can quickly grind conventional points completely in one operation giving repeatable results. The precision 6-jaw, self centering chuck takes drills from 3 mm to 40 mm dia in model dg 40 and 5 mm to 50 mm dia in model dg 50. The main chuck spindle incorporate a frictionless linear bearings having spring loaded precision imported roller thrust bearings on both sides for smooth operation of the workhead for long periods. As the drills rotate, 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 1 hp, 3-phase, 440 v ac, electric motor has three heavy duty ball bearings with dynamically balanced rotor for smooth and vibration-free grinding finish for long life. By locking swivelling work-head at the required angle the point angle can be varied from 40 to 180â°. 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 wheel is provided behind the standard wheel for point thinning immediately after the point grinding without removing drill, eliminating the flute milling error resulting in an accurate ground drill point. The machine is supplied with a cam suitable for rh drills. Extra accessories such as special cam for 180â° flat bottom drill grinding, cam for grinding pilot drill of any angle, 4 flute tap and core drill grinding cam. Machine lamp and coolant pump with tank can be supplied on request at an extra cost, if ordered with the machine.
