single crystal diamond tool machining mechanism

Area remaining after cutting height h = f / (ctgkr + ctgkr ') is the theory of the machined surface roughness, it varies the feed rate f, the tool main and sub declination angle kr kr' the decrease decreases. As the main angle kr Fy force reduction will increase rapidly and wet granite pads  cause tool vibration, reducing the feed rate f will affect the cutting efficiency, it is generally by reducing the deputy angle kr 'to reduce the surface roughness.
Conventional cutting tool surface is rough, poor edge formation, if the choice of the sub angle is too small, while the secondary cutting edge is not flat will be mapped to complex processing of the surface; also exacerbate the other flank and the sub- processing of the friction, the machined surface. "galling." Therefore, in conventional cutting, deputy angle of approximately 2 °, the minimum value of surface roughness, further reduce the deputy angle will cause the deterioration of the quality of the machined surface.
Monocrystalline diamond tool may be less than the surface roughness Ra0.01μm, edge quality can reach at least under the  granite polishing pad microscope at 100 times the defect, combined friction coefficient is extremely small, so the sub-angle limit can be reduced to 0 ~ 2 ' , thereby allowing theoretical surface roughness close to or equal to zero, the actual value of the surface roughness can be achieved ultra-smooth surface or mirror requirements.
Thus, the tool itself, the single crystal diamond tool mirror processing mechanism is through ultra-smooth surface and the tool defect secondary cutting edge (wiper) the role of the theoretical surface roughness values ​​close to zero Mirror processing effect is obtained.
2 single-crystal diamond tool design
Single-crystal diamond tool designed to consider when main factors: ① precision parts to be processed; ② actual processing conditions; ③ diamond material properties.
Design single crystal diamond tool, you  diamond core drills should follow the following principles: ① Because single-crystal diamond high hardness, processing difficulties, so the shape of the tool should be as simple as possible; ② According to single-crystal diamond brittle, poor impact resistance characteristics, should be combined with the actual processing conditions, through the tool geometry are optimized to improve the impact resistance head; ③ precision machined parts according to the requirements of the design wiper length, taking into account the ability of the tool to cut thin.