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Optimum parameters for the geometry of the reducing thing have been hooked up experimentally. They depend on the actual machining conditions, such as the material being worked; the cutting mode; the kind of cutter; the pressure of the system comprising the lathe, attachment, tool, and workpiece; the kind of machining; and the approach used to produce the workpiece billet. The superior parameters (see Figures 2, 3) are γ = - 10° to 25°, α = 6° to 12°, ɸ = 10° to 90°, ɸ1, = 0° to 20°, and λ =-4° to 15°.
When workpieces have machined the usage of a slicing device with an enlarged nostril radius r, the floor roughness is reduced, but the forces urgent the cutter away from the workpiece are increased; the reducing tool well-known shows expanded deflections, and there is more vibration. Therefore, the price of r is maintained at 1 mm. In order to simplify the sharpening of hard-alloy cutters, a cutter with a transitional reducing part 1-2 mm long with ɸ0= ɸ/2 is used as an alternative of one with a rounded nose. For cutters with mineral and ceramic blades, the following values are recommended: γ = –5° to - 10°, α = 8° to 10° and ɸ = 75° to 90° for smooth workpieces and ɸ = 10° to 30° for hard workpieces.