Tungsten Carbide Milling Cutter Enter Angle

Tungsten carbide milling cutter’s angle of enter could be determined by the position of  centerline relative to the workpiece’s edge. The angle of entry is either negative or positive, when taking the  tungsten carbide milling cutter diameter and the radial width of cut.

When the cutter’s centerline is located on the workpiece, it indicates the angle of entry is negative. This kind of angle is suggested as the the insert contacts the workpiece, instead by its poor cutting edge, but by its strong front rake. For a negative angle of entry producing, the radial width of cut is recommended to exceed the cutter radius. On the contrast, a positive angle of entry would occur if the cutter’s centerline is not located on the workpiece. It happens when the radial width of cut is less than the cutter radius. A positive angle of entry should be avoided because the insert contacts the workpiece by its weakest part—the cutting edge.


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