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Diamond – the chemically metastable form of carbon at room temperature and standard atmospheric pressure – has become the standard material used for cutting tools. Its specific cutting properties also correspond to its difficult machinability, making it one of the most difficult-to-machine materials. With regard to this, the optimal processing technology, sharpening parameters, soldering conditions as well as tool geometry are still researching and developing. Tool geometry is a complex term, which is also affected by the integral chip breaker. In the case of polycrystalline diamond (PCD), this element is produced optimally only by the laser technology, which was used in this experiment, both for machining of an integral chip breaker and sharpening of the cutting edge. After the designing and manufacturing of the tools, measurements of the end mills were carried out. This experiment itself compared the tool geometry with and without the chip breaker from the point of view of the force loading measured by the piezoelectric dynamometer Kistler 9257B. The workpiece material was alloy EN AW 6061 and EN AW 6082.

END MILLS WITH PCD INSERTS INCLUDING INTEGRAL CHIP BREAKER