When milling narrow and shallow grooves, if you do not have a suitable cutter, you can find a triangular carbide car blade into a small milling cutter.

Find the thickness of the triangle carbide car blade and measure its thickness. When it is too thick, grind it to the size with a grinder. According to the size of the center hole of the blade, a milling cutter rod is manufactured, and after the cutter blade is mounted on the milling cutter rod, the nut is fastened with a small nut. Since the center hole of the triangular hard alloy car blade has no keyway, the key can not be used to transfer the force, and the fastening force of the small nut is too small, so the car blade should be welded to the milling cutter bar by the brazing method again. After the workpiece is clamped on the fixture and milled, it can be milled. Because of this cutter is a negative rake angle. Milling depth, feedrate, and milling speed cannot be large, and the coolant is added to cool.

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