| Autor: |
MA Jing, LW Xian-li, YUE Cai-xu, ZHANG An-Shan, LI Rong-Yi |
| Zdroj: |
Journal of Harbin University of Science & Technology; Oct2014, Vol. 19 Issue 5, p66-70, 5p |
| Abstrakt: |
For the process of plastic materials working, there is a minimum cutting thickness. When the real effective cutting thickness is less than the minimum cutting thickness of workpiece materials in the actual cutting process, it will cause abnormal cutting of the tool and the workpiece, mainly in the sliding friction. So the machining accuracy is hard to guarantee. It is significant to determine the minimum cutting thickness of the materials to improve the machining quality and precision. A test method was provided to determine the minimum cutting thickness of workpiece material, focusing on the material of hardened steel Crl2MoV and the minimum cutting thickness for different cutting speed was determined by this lest method. The test results show that; the thermal softening effect has greater effect on the chip formation mechanism of hardened steel Crl2MoV (58 HRC) than strain rate effect in the selected speed range. The determination of the minimum cutting thickness has provided a theoretical basis for selecting the allowance of finish machining of automobile covering mold. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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