PCBN Tool Application
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PCBN Tool Application


PCBN tool is suitable for high speed and ultra-high-speed cutting technology

PCBN tool is most suitable for high-speed cutting of cast iron, quenched steel, and other materials. It can be seen from the relationship between tool wear and cutting distance when PCBN tool cuts cast iron and hardened steel. When the cutting speed exceeds a certain limit, the higher the cutting speed is, the smaller the cutting speed is. That is, the longer the tool life is under high-speed cutting, which is especially suitable for modern high-speed cutting.

PCBN tool hardware machining technology for the best tool materials

Finishing of quenching hardware (hardness above HRC55), usually by grinding method to finish. But with the development of cutting tool materials and lathe (especially CNC lathe) the improvement of the machining accuracy, replace the grinding with hard cutting to complete parts processing has become a new finishing way. Eventually, this car for grinding process method has the following advantages:

(1) It can improve the machining flexibility, break through the limitation of the grinding wheel. And produce workpiece with different geometric shapes by changing the cutting edge and the way of walking the cutting tool;

(2) The environmental protection problem in cutting processing is increasingly serious, the waste fluid and waste generated by grinding processing are more and more difficult to deal with and remove. And harmful to the human body, and the hard cutting without adding coolant, significant; (3) High cutting efficiency, short processing time, small equipment investment, can reduce the processing cost; (4) The energy consumed by cutting the same volume is only 20% of the grinding, so the cutting heat generated is less. And the processed surface is not easy to cause burns and micro-cracks, which is easy to maintain the integrity of the workpiece surface performance; (5) Under the same metal removal rate, hard cutting saves energy compared with grinding. Tools commonly used for hard cutting are ceramic, TiC coated blades and PCBN tool materials, but PCBN is the best tool material for hard turning at a high speed (above 1000m/min). For example, in the automobile gearbox synchronizer set fork (material is 20CrMnTi, hardness is HRC58 ~ 62) processing with the car grinding, the efficiency increased more than 4 times, the processing cost reduced to the original grinding process 1/3 ~ 1/2.
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