Anterior horn g0: stainless steel hardness, strength is not high, but its plasticity, toughness, good thermal strong sex is high, the cutting chip is not easy to be cut off. On the premise of guarantee the knife has enough strength, should choose the larger rake Angle, such not only can reduce by cutting metal plastic deformation, but also can reduce the cutting force and cutting temperature, at the same time reduce the depth of hardening layer.

Before cutting all kinds of stainless steel Angle roughly 12 ° to 30 °. Of martensitic stainless steel (e.g., 2 cr13), anterior horn desirable larger values; Of austenite and ferrite austenite stainless steel, the anterior horn should take smaller values; Without conditioning treatment or low hardness of stainless steel after tempering, desirable larger rake Angle; Smaller diameter or thin-walled workpiece, appropriate USES larger rake Angle.

High speed steel cutter designed.the gn = 10 ° ~ 20 °, carbide cutter take designed.the gn = 5 ° ~ 10 °. Reamer generally take g0 = 8 ° ~ 12 °; Tap generally take g0 = 15 ° ~ 20 ° (machine) or g0 = 20 ° (hand).

Angle of a0: after the increased Angle can reduce friction on the surface of the surface and processing after the knife, but it will reduce the strength of the cutting edge and heat capacity. After the Angle of reasonable value depends on the cutting thickness, thickness of cutting hours, after appropriate chooses a larger Angle.

Stainless steel lathe tool or boring cutter usually take a0 = 10 ° ~ 20 ° (finishing) or a0 = 6 ° ~ 10 ° (unfinished); Take the high speed steel cutter a0 = 10 ° ~ 20 °, endmill take a0 = 15 ° ~ 20 °; Take the hardness of alloy cutter a0 = 5 ° ~ 10 °, endmill take a0 = 12 ° ~ 16 °; Reamer and tap a0 = 8 ° ~ 12 °.

Figure 1 double Angle of chip breaker turning tool

Main Angle kr, deputy Angle k 'r, and re: primary Angle can increase the blade working length, is conducive to heat dissipation, but in the process of cutting the radial force increase, prone to vibration, often take kr = 45 ° ~ 75 °, if insufficient rigidity, machine tool can be appropriately increased. Deputy Angle often take k 'r = 8 ° ~ 15 °. In order to strengthen the tip, the general should be grinded e = 0.5 ~ 1.0 mm tip arc. Ls: blade Angle in order to increase the blade strength, blade Angle generally take the ls = 8 ° ~ 3 °, intermittent cutting take larger value when the ls = 15 ° ~ 5 °.

Production practice, in order to increase the chip deformation and improve the blade strength and heat capacity, using double edge Angle turning tool, has obtained the good effect of chip breaker, also widen end range, as shown in figure 1. First ls1 blade Angle 0 °, or the second side Angle near the tip part, ls2 material - 20 °, the second side Angle of the blade length lls2. Material ap / 3.

When double dip tool g0 = 20 °, a0 = 6 ° ~ 8 °, kr = 90 ° or 75 °, chamfer Angle before g01 = - 10 ° and re = 0.15 ~ 0.2 mm, in the Vc = 80 ~ 100 m/min, f/r = 0.2 ~ 0.3 mm, the ap = 4 ~ 15 mm under the condition of cutting, chip breaker effect is good, high tool life.

Request cutter blade surface before and after surface roughness value is small, the cutting tool grinding blunt the 1/2 of the cone VB for the ordinary materials processing.