High precision woodworking, metal portable mortising machine mortiser drill machine mortising machine hollow chisel

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In order to take into account the geometry change of the drill edge along the edge of the drill bit in the analysis, the drill hole can be divided into concentric sectors (see Figure 3). If it is simply assumed that the cutting performance is constant within a sector

Considering that the cutting angle and inclination angle vary greatly along the edge of the bit, the cutting speed depends on the radius, and should be obtained from cutting data obtained when turning with similar edge geometry, or from orthogonal cutting data. Conversion of cutting experiments