Journals →  Chernye Metally →  2019 →  #5 →  Back

New developments of Tula State University
ArticleName The centering mandrel of the increased vibration resistance for milling of thin-walled sleeves
ArticleAuthor A. S. Yamnikov, M. N. Bogomolov

Tula State University (Tula, Russia):

A. S. Yamnikov, Dr. Eng., Prof., Dept. “Machinebuilding Technology”, e-mail:
I. A. Matveev, Engineer, Post-Graduate, Dept. “Machinebuilding Technology”


When machining metals by cutting, there are almost always forced or self-oscillations. Milling is characterized by the presence of clear periodic effects on the technological system when changing the cutting teeth. At high rigidity of the system, for example, when milling the planes of the engine block, these disturbing factors are extinguished by the large static and dynamic rigidity of the system, together with high damping capabilities. On the contrary, when processing non-rigid workpieces of low rigidity, which include thin-walled bushings, periodic fluctuations in cutting forces bring the technological system out of balance and cause significant vibrations that degrade the quality of the machined surface. As practice and special studies show, this also reduces the durability of the cutting tool, sometimes to catastrophic wear. It is possible to reduce the fluctuations of cutting forces by increasing the number of teeth in the cutter and reducing the pitch of the teeth, but on smalldiameter cutters using interchangeable carbide plates with mechanical fastening this way is impossible. Returning to the high-speed milling cutters is impractical because of a decrease in milling performance and cutter life. Therefore, the article describes the development of a centering mandrel of high vibration resistance. Analyzed design features mandrels, as used in production, and described in the patent and technical literature. The proposed design of the mandrel, in which the workpiece set, rigidly basing on the short cylindrical belts at the ends of the hole and pressing the screw clamp to the base end. After basing, the workpiece is unclamped from the inside along the entire length of the free hole by elastic deformation by axial compression of an additional bushing of elastic material, located on the mandrel with clamping elements.

keywords Non-rigid sleeve, milling, vibrations, centering mandrel, vibration resistance, oscillations of cutting forces, surface roughness

1. Kuznetsov V. P., Yamnikova О. А. The stability of the technological system when cutting threads with multi-cutter heads. STIN. 2004. No. 2. pp. 12–14.
2. Bykov G. T., Yamnikov A. S., Yamnikova O. A., Dorokhin N. B. Vibrostability in turning thin-walled pipe by multicutter heads. Russ. Eng. Res. 2010. Vol. 30. No. 3. pp. 296–299.
3. Yamnikova O. A. Construction of mathematical model of oscillations for a non-rigid shaft during machining. STIN. 2003. No. 1. pp. 18–21.
4. Leontyev B. V., Leontyeva А. N. Cutting control to eliminate vibrations. Vologdinskie chteniya. 2012. No. 80. pp. 159–162.
5. Astashev V. K., Korendyasev G. К., Erofeev V. I. Thermomechanical model of self-oscillation excitation during metal cutting. Vestnik Nizhegorodskogo universiteta im. N. I. Lobachevskogo. 2013. pp. 29–35.
6. Astakhov V. P. Machinability: existing and advanced concepts, chapter 1 in book: Machinability of advanced materials Ed. J. P. Davim. London : Waley. 2014. pp. 1–56.
7. Atkins A. G. Modelling metal cutting using modern ductile fracture mechanics: quantitative explanations for some longstanding problems. International Journal of Mechanical Science. 2003. Vol. 43. pp. 373–396.
8. Abushawashi Y., Xiao X., Astakhov V. P. A novel approach for determining material constitutive parameters for a wide range of triaxiality under plane strain loading conditions. International Journal of Mechanical Science. 2013. Vol. 74. pp. 133–142.
9. Abushawashi Y., Xiao X., Astakhov V. P. FEM simulation of metal cutting using a new approach to model chip formation. International Journal of Advances in Machining and Forming Operations. 2011. Vol. 3. pp. 71–92.
10. Astakhov V. P. Authentication of FEM in metal cutting. Chapter 1 in book Finite Element Method in Manufacturing Processes Ed. J. P. Davim. New York: Wiley. 2011. pp. 1–43.
11. Kalinski K. J., Galewski M. A. Optimal spindle speed determination for vibration reduction during ball-end milling of flexible details. International Journal of Machine Tools and Manufacture. May 2015. Vol. 92. pp. 19–30.
12. Kalinski K., Mazur M., Galewski M. High speed milling vibration surveillance with the use of the map of optimal spindle speeds. Proceedings of the 8th International Conference on High Speed Machining. ENIM. Metz. France. 2010. pp. 300–305.
13. Zagórski I., Kulisz M., Semeniuk A., Malec A. Artificial neural network modelling of vibration in the milling of AZ91D alloy. Advances in Science and Technology Research Journal. Sep. 2017. Vol. 11. Iss. 3. pp. 261–269.
14. Comak A., Budak E. Modeling dynamics and stability of variable pitch and helix milling tools for development of a design method to maximize chatter stability. Precision Engineering. 2017. Vol. 47. pp. 459–468.
15. Wu S., Li R., Liu X., Yang L., Zhu M. Experimental study of thin wall milling chatter stability nonlinear criterion. Procedia CIRP. 2016. Vol. 56. pp. 422–427.
16. Yang Y., Zhang W-H., Ma Y-Ch., Wan M. Chatter prediction for the peripheral milling of thin-walled workpieces with curved surfaces. International Journal of Machine Tools & Manufacture. 2016. Vol. 109. pp. 36–48.
17. Yusoff A. R. Identifying bifurcation behavior during machining process for an irregular milling tool geometry. Measurement. 2016. Vol. 93. pp. 57–66.
18. GOST 8732-78. Seamless hot-deformed steel pipes. Range of sizes. Introduced: 01.01.1979.
19. GOST 1050-88. Carbon structural quality steel gauged bars with special surface finish. General specifications. Introduced: 01.01.1991.
20. Equipment for hardware production. [Electronic resource] Available at: http://нашаоснастка.рф/catalog/frezernaya_osnastka. Accessed: 18.12.2018.
21. Yamnikov А. S., Boriskin О. I., Yamnikova О. А., Matveev I. А. Technological inheritance of the properties of an initial billet in the accuracy parameters of extended axisymmetric parts. Chernye Metally. 2017. No. 12. pp. 50–56.
22. Matveev A. I., Yamnikov A. S. Precision of Long Thin-Walled Axisymmetric Parts in Cutting and Pressure Treatment. Russian Engineering Research. 2018. Vol. 38, No. 9. pp. 719–720.
23. Yamnikov A. S., Chuprikov A. O. Chucks For Thin-Walled Blanks. Russian Engineering Research. 2015. Vol. 35, No. 11. pp. 838–840.
24. Yamnikova О. А., Yamnikov А. S., Chuprikov А. О., Matveev I. А. Elastic deformations of blanks of hollow axially symmetric bodies when fastened in three-jaw chucks. Chernye Metally. 2018. No. 6. pp. 25–30.
25. Dubinova I. D., Dubinov A. E., Nizhegorodtsev Ju. B. Thin-walled part fastening method. Patent RF, No. 2134629 B23Q 3/00. Russian Federal Nuclear Centre — All-Russian Scientific Research Institute of Experimental Physics; Ministry for Atomic Energy of the Russian Federation. Published: 20.08.1999.
26. Kobylin R. A., Senkin E. S., Boychenko A. E., Ganopolsky F. B., Ganov V. K. The method of fixing thin-walled parts. USSR author’s certificate No. 663495, B 23 B 31/40, 1979. Enterprise P/Ya G-4575. Published: 25.05.79, Bulletin No. 19.
27. Smirnov V. G., Egorov B. A., Smirnov G. V., Fedorov A. A. Mandrel for centering and attachment of thin-walled part. Patent RF No. 2134182, D 23 D 31/40, 1999. ОАО Verkhnesaldinskoe metallurgicheskoe proizvodstvennoe obyedinenie, АОО Chelyabinskiy truboprokanyy zavod. Published: 10.08.1999.
28. Timofeev A. P. Thin-wall parts working mandrel. Patent RF. No. 2 291 760. ОАО «Stankotekhnika». Published: 20.01.2007.
29. Profilometr-Surftest-SJ-210-PRRUS1344.pdf. [Electronic resource]. Available at: Accessed: 14.12.2018.

Language of full-text russian
Full content Buy