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2. Loosen the horizontal locking handle, rotate the rotating device of the horizontal tool rest to 1/2, calculate the taper angle of the tool (for example, for grinding a 60-degree tapered tool, it must be rotated to the position of 30- experience angle 5 = 25) for locking. When the pin in the tool rest position is adjusted to a free state and not inserted into the groove, turn the handle of the long-axis fine-tuning device evenly with the left hand, and grind the tool slowly to the left. Turn the tool rest evenly with the right hand, tighten the nut handle and grind the tool into a cone. This process can not completely sharpen the tip of the knife, and a margin of about 0.4mm must be left. Note: it is best to use 320 diamond finishing grinding wheel for this initial machining process;

3. Adjust the indexing screw of the tool holder to the original datum line of 0 degrees, rotate 6 slots to the right to make the plane of the tool horizontally upward, and then adjust the indexing disc of the tool holder to rotate 2 slots to lock the bolt state, so that the tool cannot rotate. At this point, the left hand rotates the long-axis fine-tuning device at a uniform speed, and then the tool rest slowly grinds forward to the left to finely grind the left cutting edge of the tool at point A;

4. After determining the point A of grinding the cutting edge, pull the pin to position 2, so that the cutter at the rotary position of the tool holder can rotate in the limit block, process point C and rotate beyond point B to grind the back of the cutter, so that the right hand rotates the nut handle of the tool holder clockwise, and a small number of left hands rotate the long-axis fine-tuning device evenly, and then the tool holder slowly grinds the back of the cutter to the left and forward;

5. After grinding the tool, loosen the locked tool holder, tighten the nut handle, make the tool in a loosened state, and take it out of the spring chuck. Hold the handle with both hands, tilt the tip of the tool slightly to the end face of the grinding wheel at a back angle of 20-30 perpendicular to the end face of the grinding wheel, and rotate it clockwise at the same time, mainly to control the requirements for the width of the tool in actual machining, which is generally 0.1-0.2 mm. ..