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Using a twist drill to change into a taper hole reamer
In production, there are often taper holes with different tapers. There is no suitable taper hole reamer, especially in single-piece or small-batch production, in order to reduce the special reamers used for processing taper holes and to reduce the number of processes used. The process and time can be changed to a taper hole reamer using ordinary twist drills. After many uses, the effect is very good. Restructuring method: The standard twist drill is ground on the grinding machine to the required cone size of the reamer, and then tool grinding (or hand grinding) is used to grind the back corner and leave a reasonable edge band to use. When using, drill the bottom hole with a bit smaller than the diameter of the small end of the taper hole, and then use a taper hole reamer to ream. During the reaming process, the corresponding cutting fluid can be selected according to different workpiece materials to prolong the tool life and improve the reaming quality.