2018-Sustainable Industrial Processing Summit
SIPS2018 Volume 4. Mamalis Intl. Symp. / Advanced Manufacturing
| Editors: | F. Kongoli, A. G. Mamalis, K. Hokamoto |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2018 |
| Pages: | 352 pages |
| ISBN: | 978-1-987820-88-1 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Efficiency of Hard Machining Processes
János Kundrák1; Athanasios G. Mamalis2; Viktor Molnar1;1UNIVERSITY OF MISKOLC, Miskolc, Hungary; 2PC-NAE, DEMOKRITOS NATIONAL CENTER FOR SCIENTIFIC RESEARCH, Athens, Greece;
Type of Paper: Regular
Id Paper: 158
Topic: 48
Abstract:
Machining of hardened surfaces has improved significantly in the past. In addition to long-lasting abrasive machining, machining with cutting tools having geometrically defined single point cutting edges has also appeared, and its productivity gets better and better. This paper analyzes the efficiency of various processes in producing surfaces with the same quality parameters (Rz, IT). The investigated procedures or process variants are: traverse bore grinding; hard-turning with standard insert; hard-turning with Wiper inserts; combined process with standard inserts in hard-turning stage; and combined process with Wiper inserts in hard-turning stage.
In the first step, we provide the results of the experimental tests by which we chose the machining data for the different processes, to ensure the required quality in each case. Based on the examination of Material Removal Rate (MRR), Surface Rate (SR), environmental load, and machining flexibility, we determine the order of their application based on the expected operating conditions. It is shown that the Material Removal Rate is most favourable for variants of hard-turning. However, if the operating conditions of a built-in component require a random surface, the most efficient process is combined machining. This order is also advantageous compared to conventional machining because the proposed variants also reduce the environmental load.
Keywords:
Environment; Precision/Ultraprecision manufacturing; Superhard materials;References:
[1] Kundrak, J.; Mamalis, A.G.; Markopoulos, A., Finishing of hardened boreholes: Grinding or hard cutting? Mat. and Manuf. Process., Vol.19, No.6, 2004, pp. 979-993.[2] Mamalis, A.G., Kundrak, J., Gyani, K. On the dry machining of steel surfaces using superhard tools, Int. J. of Advanced Manufacturing Technology, Vol.19, No.3. 2002, pp. 157-162
[3] Kundrak, J.; Varga, G.: Use of coolants and lubricants in hard machining, TEHNICKI VJESNIK-TECHNICAL GAZETTE (ISSN: 1330-3651) (eISSN: 1848-6339) 20: (6) pp. 1081-1086. (2013)