1. When the triangular carbide car blade is changed into a small milling cutter in the narrow and shallow groove, if there is no suitable milling cutter, a triangular carbide car blade can be changed into a small milling cutter.
The thickness of the triangular carbide car blade is measured, and when it is too thick, it is thinned to a size by a grinding machine. A milling cutter is made according to the size of the center hole of the blade, and the blade is mounted on the milling cutter and fastened with a small nut. Since the center hole of the triangular carbide insert has no keyway and cannot be transmitted by the key, and the tightening force of the small nut is too small, the blade should be welded to the milling cutter by brazing. The workpiece is clamped to the fixture and milled after a good knife. Because this milling cutter is a negative rake angle. The milling depth, feed rate and milling speed cannot be large and the coolant is cooled.
2. The end mill workpiece that can be pressed at the center is a square piece with a round socket in the middle. The square hole is machined according to the workpiece size on the positioning plate, so that the workpiece can be placed in the shallow or four sides. Mill out a small opening and use the tool to pull out the milled workpiece.
In order to ensure that the workpiece does not fly out during the milling process, the end mill is pressed at the center to press the workpiece. The ball pin is connected to the lower end of the end mill body with a screw sleeve, between the ball pin and the cutter body. The compression spring applies pressure to the ball pin so that the ball pin is too much on the workpiece with a suitable force.
The cutter can also be mounted on a rocker drill to mill smaller workpieces. The positioning plate can be made of a low melting point alloy and pressed against the table top of the milling machine or the radial drilling machine with a pressure plate.
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