How to sharpen the blade of a lathe?
The blade of a lathe tool is worn Now at 90 ° rough turning of steel hard alloy knife, for example, the method of the lathe tool grinding. (1) the face of the knife and the side of the knife. The main Angle, the rear Angle of the main and the secondary Angle and the rear Angle of the rear Angle are also ground after the roughing of the knife and the rear edge of the knife. Coarse grinding out after the horn and deputy should larger than the required Angle Angle and deputy after about 2 °. (2) roughing the front of the knife. The front edge of the knife is usually worn with the shavings. Before grinding the chip, use the face of the grinding wheel to rough the front edge to obtain the necessary Angle and surface roughness. (3) grinding the cutting grooves. The cuttings can be ground out by flat grinding wheels. In general, the initial position of the coarse-grinding chip trough is about half the length of the shavings; The distance from the main blade is about half of the width of the shavings.
Fine grinding tool (1) the grinding and cutting grooves. In order to make the shape of chip breaker groove finishing more correct, the surface roughness more fine, coarse grinding of chip breaker groove need fine grinding, fine grinding of chip breaker groove method is the same as the coarse grinding. (2) it grinds down the edges. The grinding wheel is grinding out the end of the cup grinding wheel, and the grinding wheel is 100 # ~ 200 #. (3) the knife face and the edge of the knife face after the grinding, the grinding method is shown in figure 6-32, which is the same as the grinding wheel and the grinding. Stop sharpening when the main blade is worn out and the edge width reaches the requirement. (4) sharpen the edge. (5) sharpen the edges.
The oil stone can be made from the back of the tip of the knife, and it can be used to grind up a half MM blade at the tip of the knife
The grinding of a lathe blade is as follows: 1, choice of grinding wheel It is advisable to use 46 # ~ 60 # grain size and medium hard alumina (corundum) grinding wheel when grinding high speed steel. It is suitable for the green carbide grinding wheel of 60 # ~ 80 # and medium to medium hard. In rough grinding, the wheel of small size is used; When grinding, the grinding wheel of a larger size is used
