Effect of the Angle of Inclination of the Cutting Edge of a Rotating Tool on the Cutting Force during High-Speed Machining of Complex-Profile Surfaces of Parts on CNC Machines

The aim of the work is to increase the productivity of processing complex-profile surfaces of parts on CNC machines. To achieve this goal, the task of studying the components of cutting forces when processing workpieces with a rotating tool with a steeply inclined cutting edge in various cutting modes is solved. Theoretical and experimental research methods are used. As a result of theoretical research, formulas have been obtained for calculating the normal cutting force when processing a flat surface of a rotating part with an end mill, taking into account the influence of the angle of inclination of the cutting edge and the ratio of the components of the cutting force. The range of change in the angle of inclination of the cutting edge is set, which reduces the cutting force. To verify theoretical dependencies, experimental studies of the components of the cutting force were carried out when processing a billet made of aluminum alloy D16T with end mills from various manufacturers. Using a special software and measuring complex, oscillograms of amplitude changes in the components of the cutting force at different values of cutting depth and embedding, feed to the tooth and cutting speed were obtained. The dependences of the influence of the cutting edge inclination angle on the cutting force are established, confirming the results of theoretical studies. The values of the correction coefficients for the cutting speed are determined, taking into account the angle of inclination of the cutting edge of the tool and the properties of the processed material, which allows to adjust the values of the cutting speed and ensure an increase in processing productivity up to two times.

1. Popok N. N., Anisimov V. S., Korba K. V. (2023) Dynamics of the Cutting Process with Cutters with Steeply Inclined Cutting Edges. Innovatsionnye tekhnologicheskie sistemy i protsessy v mashinostroenii: sb. st. I Mezhdunar. nauch.-tekhn. konf. [Innovative Technological Systems and Processes in Mechanical Engineering: Collection of articles of the 1st International Scientific and Technical Conference]. Mogilev, Publishing House of Belarusian-Russian University, 122–128 (in Russian).

2. Bobrov V. F. (1962) The Influence of the Angle of Inclination of the Main Cutting Edge of the Tool on the Process of Cutting Metals. Moscow, Mashgiz Publ. 152 (in Russian).

3. Dalsky A. M., Kosilova A. G., Meshcheryakov R. K., Suslov A. G. (eds.). (2001) Mechanical Engineer’s Handbook. Vol. 2. 5th Ed. Moscow, Mashinostroenie-1 Publ. 912 (in Russian).

4. Guhring. Super Line 2016. Guhring. Available at: https://pdf.directindustry.com/pdf/guehring/superline-2016/9235-706023.html.

5. Baranchikov V. I. (ed.). (1994) Handbook of the Toolmaker-Designer. Moscow, Mashinostroenie Publ. 560 (in Russian).

6. Filippov G. V. (1981) Cutting Tools. Leningrad, Mashinostroenie Publ., Leningrad Branch. 392 (in Russian).

7. Mitsubishi Materials. Catalog. Available at: https://importtools.ru/brands/metall/mitsubishi-carbide.

8. Danilenko B. D. (2013) Possibilities of Using the Material Machinability Index as a Correction Factor when Calculating the Cutting Speed. Izvestiya Vysshikh Uchebnykh Zavedeniy. Mashinostroenie = Proceedings of Higher Educational Institutions. Маchine Building, (2), 32–35 (in Russian).

9. Danilenko B. D. (2011) Comparative Machinability of Aluminum Alloys. STIN [Machines. Tools], (5), 15–18 (in Russian).

10. Seco. Catalog & Technical Guide 2020.2. Seco. URL: https://pdf.directindustry.com/pdf/seco-tools/catalog-technical-guide-20202/5699-951358.html.