| ArticleName |
Design features of end mills with a combination of cutting and deforming teeth for machining tough-plastic alloys |
| ArticleAuthorData |
SPE RIT-Engineering Ltd., Chekhov, Russia:
V. V. Istotsky, Dr. Eng., General Director, e-mail: v_ist@mail.ru |
| Abstract |
The article shows the design features and possibility of manufacturing workable milling cutters for processing ductile alloys using multi-coordinate grinding machines with numerical control. A mathematical apparatus is given to describe the design features of the cutting part of such cutters consisting in the use of cutting and deforming teeth, which makes it possible to influence the chip shear angle within a single tool. The layouts of cutting and deforming teeth are described, the obtained technological 3D models of the designed samples are shown, and the calculated values of cutting forces and deformation forces of various teeth (cutting and deforming) when processing a viscoplastic material are given. To confirm the operability of the designed tool, using the technological capabilities of multi-axis CNC grinding machines, tool samples were obtained. Testing of the obtained samples showed a decrease in cutting force up to 8% compared to a tool with a classic (constant) geometry of the cutting teeth. |
| keywords |
Cutting, milling, cutting teeth, deforming teeth, ductile materials, rheological properties,
technological 3D tool model, CNC grinding machines |
| References |
1. Mylek S., Trinque J. Cutting tool and cam collaboration. Cutting Tool Engineering. 2017. Vol. 69. pp. 30–33.
2. Trent Е. М. Metal cutting. Moscow: Mashinostroenie, 1980. 263 p.
3. Soori M., Asmael M. Cutting temperatures in milling operations of difficult-to-cut materials. Journal of New Technology and Materials. 2021. Vol. 11. pp. 47–56.
4. Grubyy S. Calculation of the cutting forces and torque when milling with end mills. Proceedings of Higher Educational Institutions. Маchine Building. 2020. No. 10.
5. Khaymovich А. I., Zhidyaev А. N. Simulation of rheological properties of heat-resistant materials under conditions of high-speed cutting. Izvestiya Samarskogo nauchnogo tsentra Rossiyskoy akademii nauk. 2012. Vol. 14. No. 6. pp. 81–86.
6. Zubkov N. N. Development and study of the deforming cutting process as a method of shaping developed macroreliefs. Dissertation … of Doctor of Engineering Sciences. Moscow: MGTU imeni N. E. Baumana, 2001. 478 p.
7. Abrosimov S. К. Phenomenological model of machinability with advanced plastic deformation during broaching. Uprochnyayushchie tekhnologii i pokrytiya. 2007. No. 10. pp. 15–19.
8. Abrosimov S. К. Method and broach for working by burnishing and cutting. Patent SU. No. 1488183 A1. Applied: 13.04.1987. Published: 23.06.1989.
9. Suslov A. G., Ushakov I. A., Prokofyev A. N. Combination type (cutting-deformation) screw tap. Patent RF, No. 2142867. Applied: 23.02.1998. Published: 20.12.1999.
10. Istotskiy V. V. Algorithm for graphic analytical synthesis of shaped tools with skew teeth. Chernye Metally. 2019. No. 1. pp. 72–77.
11. Istotskiy V., Protasev V. Design and manufacture of hob mills for the formation of straight slots using the principles of screw backing. International Journal of Mathematical, Engineering and Management Sciences. 2019. No. 4. pp. 936–945.
12. Istotskiy V. V., Protasev V. B. Principles of modern design of the cutting part of shaped tools, taking into account the peculiarities of their manufacture on CNC grinding machines. Izvestiya Tulskogo gosudarstvennogo universiteta. Seriya: Tekhnologiya mashinostroeniya. 2006. pp. 102–107.
13. Lashnev S. I., Yulikov M. I. Calculation and design of metal-cutting tools using a computer. Moscow: Mashinostroenie, 1975. 392 p. |
