Abstract:
By drying cutting experiments of cutting forces, cutting temperature, and the integrity of machined surface of bearing steel GCr15 which is machined by PCBN tools, the effect law of the workpiece hardness on above-mentioned variables and chip shape, chip hardness, chip deformation coefficient is obtained. The workpiece critical hardness between general cutting and hard cutting is found, and it is 50 HRC for GCr15.
Key words:
Hard cutting Dry cutting PCBN tool Critical hardness
* TThis project is supported by National Natural Science Foundation of China (No.59975026).
Selected from Proceedings of International Symposium of Advanced Manufacturing Technology(ISAMT'2001); revised manuscript July
5, 2002
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