Radial Hydrostatic Compensator for Deformations in a Machine-Tool Technological System

The paper considers a design of a radial hydrostatic compensator for deformations in a machine-tool technological system. The paper also presents its mathematical model and a method for computing its static properties. We show that this design is capable of ensuring a stable negative compliance value in the low and moderate load ranges. We established that the form the characteristic curves take is largely dependent on the tuning coefficient for the friction loss in the input throttle, which has an optimum value in terms of load property stability. We provide an example of computing compensator parameters and determine that it is capable of performing its functions in a machine tool with real-world characteristics

References

[1] Shatokhin S.N., Shatokhin S.S. [Hydrostatic bearings with an actively mobile bearing]. Nadezhnost’ tekhnologicheskogo oborudovaniya, kachestvo poverkhnosti, trenie i iznos. Tez. dokl. Vsesoyuz. nauch.-tekh. konf. [Reliability of technological equipment, surface quality, friction and wear. Abs. Russ. Sc. Tech. Conf.]. Khabarovsk, KhPI Publ., 1991, pp. 64--65 (in Russ.).

[2] Kodnyanko V.A. Otritsatel’naya podatlivost’ energosberegayushchey adaptivnoy radial’noy gidrostaticheskoy opory s ogranicheniem vykhodnogo potoka smazki. Zhurnal Sibirskogo federal’nogo universiteta. Tekhnika i tekhnologii [Journal of Siberian Federal University. Engineering & Technologies], 2010, vol. 3, no. 4, pp. 444--453 (in Russ.).

[3] Kodnyanko V.A. Stability of energy-saving adaptive journal hydrostatic bearing with a restriction of the output lubricant stream. Zhurnal Sibirskogo federal’nogo universiteta. Tekhnika i tekhnologii [Journal of Siberian Federal University. Engineering & Technologies], 2011, vol. 4, no. 6, pp. 674--684 (in Russ.).

[4] Shatokhin S.N., Kodnyanko V.A., Zaytsev V.P. Functional capabilities of radial active hydrostatic bearing. Mashinovedenie, 1988, no. 4, pp. 85--91 (in Russ.).

[5] Kodnyanko V.A., Kurzakov A.S. Static and dynamic characteristics of a thrust hydrostatic bearing with membrane compensator of movement. Sborka v mashinostroenii, priborostroenii [Assembling in Mechanical Engineering and Instrument-Making], 2017, vol. 18, no. 2, pp. 82--87 (in Russ.).

[6] Constantinescu V.N. Lubrificatia cu gaze. Bucuresti, 1963.

[7] Fikhtengol’ts G.M. Kurs differentsial’nogo i integral’nogo ischisleniya. T. II [Course of differential and integral calculus]. Moscow, Nauka Publ., 1969.

[8] Voskresenskiy V.A., D’yakov V.I., Zile A.Z. Raschet i proektirovanie opor zhidkostnogo treniya [Calculation and design of fluid friction bearings]. Moscow, Mashinostroenie Publ., 1983.

[9] Mineev A.S., Blinov O.V. The study of spindle unit stiffness by solid modeling. Vestnik IGEU, 2012, no. 1, pp. 31--34 (in Russ.).