Hard cutting tool materials processing technology best

For quenching hardware (hardness HRC55 or more) of the finishing, usually grinding way to accomplish, but with the development and lathe tool materials (especially CNC

lathe) machining accuracy increased to hard cutting instead of grinding to finish parts The final processing has become an

The new finishing way that this kind of car instead of grinding process method has the following advantages:
(1) can improve the processing of flexible, breaking the restrictions grinding wheel, by changing the cutting edge and the cutting means of the geometrical shapes can

be processed of the workpiece;
(2) cutting the increasingly serious environmental problems, Abrasive grinding waste generated and waste treatment and removal more difficult, but also harmful, and hard

cutting without adding coolant, is of great significance;
(3) high cutting efficiency, the processing time is short, the equipment investment costs, it can reduce processing costs;
(4) removal of the energy consumed by the same volume of only 20% of the grinding, resulting in less heat cutting, the machined surface does not easily cause burns and

small cracks, easy to maintain the integrity of the surface properties;
(5) The same metal removal cases, hard cutting energy savings compared to grinding.
Typically used for hard cutting tools materials are ceramics, TiC coated inserts and PCBN cutting tool materials, but at higher speeds (1000m/min above) under the Hard

turning, PCBN tool material is the best breed. If the auto gearbox synchronizer sleeve fork (Material

20CrMnTi, hardness HRC58 ~ 62) used in vehicles instead of grinding process, the efficiency is improved more than four times, the processing cost of the grinding

process reduces the original 1/3 to 1/2.