No matter how many blades a tungsten steel milling cutter has, the end face of the blade must first be ground flat perpendicular to the axis. This is the key to ensuring that the highest point of the blade is on the same plane. The methods for grinding the blade end face and checking the verticality of the milling cutter axis are as follows:
(1) Visual inspection. With the help of a flat plate, place the tungsten steel milling cutter blade downward on the flat plate and observe the left and right tilt angles. Then rotate the milling cutter 180° and observe its left and right tilt angle. In the same direction, if the inclination angles observed twice are different, grinding is required until the inclination angles observed twice in the same direction are the same. Then rotate the milling cutter 90°, repeat the above action, and check the other direction.
(2) Use a square ruler to correct. Use a 90° square ruler on a flat plate to calibrate. Place the milling cutter and the square ruler flat and observe whether there is a gap between the milling cutter and the square ruler or whether the gap is uniform. Then judge the verticality of the milling cutter based on the gap and correct the milling cutter. The knife is sharpened.
(3) Self-correction. Clamp the tungsten steel milling cutter on the chuck of the drilling machine or milling machine, put a scrap grinding wheel underneath, select the appropriate rotation speed, turn on the machine tool, then move the milling cutter down, grind on the grinding wheel, and grind according to the end face grinding conditions.
(4) Place the severely chipped tungsten steel milling cutter on the cutting machine. After adjustment, cut out the section of the milling cutter at one time.
(5) Grind the tool on the milling cutter and clamp it with a three-jaw or taper sleeve. After adjustment, use a grinding wheel to grind the end face of the milling cutter until it meets the requirements.
