Lathe problem: the round groove of lathe knife how to grind?
Between the edge of the chip and the edge of the blade, it should be more than 0.3 mm (or slightly less than the size of the blade) to protect the blade. In fine car, the knife is shallow, the walk knife is small, the chamfer is smaller. The grinding wheel of the mill knife is not necessary for the use of the pen, and the grinding of the hard grinding wheel can be repaired. Pay attention to your arms while sharpening.
A little personal experience: It is very important to sharpen the cutting edge of the blade, and the style is different. But the general rule is pretty much the same. The shape of the groove should be determined according to the depth and quantity of the cutting, and the radius of the channel is slightly less than the radius of the roll, and the width is generally less than the cutting depth. Note: the tip of the knife is higher than the blade (the tip of the blade). If the blade is lower than the blade, the blade should be deeper, or the slot is higher than the blade, and the cutting will be directed to the left.
Workpieces burr, knife didn't grind good quick wear, or when the car broke down the tip chip effect is poor resistance, friction of burr, must be used before knife kong pen ground leveling wheel, grooving to smooth, straight knife grinding according to the material, material hardness, allowance for reasonable grinding tool face Angle, different size coarse car finishing tool, slot depth and the width is then strain, to years of experience is not to say that the can be on the basic skills are solid. But must grind the sharp, also want to workpiece chip impact resistance, wear resistance after the surface is smooth, cutter according to the material, hardness, choose reasonable tool bit is also very important.
