In production, there are often different taper holes with different taper, no suitable taper reamer, especially in single or small batch production, in order to reduce the special reamer used to machine the taper hole, and reduce the process used. The process and time can be changed into a cone reamer by ordinary twist drill. After many times of use, the effect is very good.
Modification method: The standard twist drill is ground into the cone size of the required reamer on the grinding machine, and then the back angle is ground with a tool grinder (or manual grinding), and a reasonable edge belt can be used.
In use, first drill the bottom hole with a drill smaller than the diameter of the small end of the tapered hole, and then use the tapered reamer to ream the hole. In the process of reaming, the corresponding cutting fluid can be selected according to different workpiece materials to prolong the tool life and improve the reaming quality.
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