Shanghai Highmind Super-hard Material S&T Development Ltd

Our Mainly Products PCD Inserts, PCBN Inserts, Mono Diamond And CVD Inserts,
Diamond Machine Processing Cutting Tool.

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Machining principle of single crystal diamond cutting tools
- Apr 27, 2017 -

The residual area height of h=f/(ctgkr+ctgkr') is the theoretical roughness value of machined surfaces, and decreases with the kr' of the feed quantity f, the cutter main deflection angle KR and the vice deflection angle. Because the decrease of KR in the main deflection angle can cause the cutting tools vibration to increase rapidly and reduce the feed F, it will affect the cutting efficiency, so the surface roughness can be decreased by decreasing the kr' of vice deflection angle.

Conventional cutting tool surface roughness, the blade flatness is poor, if the choice of vice-angle is too small, on the one hand, the vice cutting edge of the uneven will be reflected on the surface of the processing, on the other hand, will aggravate the vice-cutter surface and the surface of the friction, will have processed surface "nap Therefore, in conventional cutting, the vice deflection angle is about 2 °, the machining surface roughness value is minimal, and further reducing vice deflection angle will worsen the machined surface quality.

The surface roughness value of single crystal diamond cutter can be less than Ra0.01?m, blade quality can be reached at least 100 times times under the microscope observation of no defect, coupled with minimal friction coefficient, so the limit value of its vice-deflection angle can be reduced to 0~2', so that the processing surface roughness of theoretical value is close to or equal to zero, the actual surface roughness can reach the mirror or ultra smooth surface requirements

Thus, in the case of the cutter itself, the mirror machining mechanism of single crystal diamond cutter is through the ultra smooth surface of the cutter and the non-defective accessory cutting edge (trimming blade), so that the processing surface roughness theory value close to zero to obtain the mirror processing effect.