Study of the structure of spherical roller surfaces in grinding

Abstract

The methods of grinding the spherical ends of tapered rollers using the wheel end and periphery are considered. The ways of improving the accuracy of the spherical end when processing using the periphery of a grinding wheel, radially refilled, and ensuring the surface quality due to uneven wear of a wheel are shown. It has been established that increasing the efficiency of grinding the spherical surfaces of a roller is carried out by reducing random and systematic error components of processing. The results of grinding using the corrected radius and the processing device for continuous grinding of spherical roller ends are represented. The structure of surfaces of spherical roller ends using the optical-electronic complex that could reduce the influence of the cur vature of the surface under study on its image is investigated. An algorithm of using binarization of an original halftone image for analyzing the structure of the treated surface, which provides processing and output of the results on the PC screen is considered. The binary images of the surface structure of spherical roller ends with different roughness are shown. The studies of the effect of the average amplitude of oscillation of the autocorrelation function depending on the surface roughness are performed. Thus, the relationship of roughness of the surface profile with the parameters of the autocorrelation function is shown. The optimum parameters of the surface structure, the amplitude of the autocorrelation function and the mathematical expectation that will provide an increase in performance properties of the contact surfaces are determined.

About the authors

N. V. Nosov

Samara State Technical University

Author for correspondence.
Email: nosov@samgtu.ru

Doctor of Science (Engineering), Professor

Head of the Department "Mechanical Engineering"

Russian Federation

L. N. Mikhailova

Samara State Technical University

Email: mih_ln@mail.ru

Candidate of Science (Engineering)

Associate Professor of the Department "Automated machine tools and tooling systems"

Russian Federation

References

  1. Nosov N.V., Mikhailova L.N. Improving the processing accuracy of spherical ends of bearing tapered rollers // Vestnik of the Samara State Aerospace University. 2012. No. 3(34), part 1. P. 259-264. (In Russ.)
  2. Mikhailova L.N. Povyshenie kachestva shlifovaniya sfericheskikh tortsov konicheskikh rolikov // Materialy Vserossiyskoy nauch.-tekhn. internet-konferentsii s mezhdunarodnym uchastiem «Vysokie tekhnologii v
  3. mashinostroenii». Samara: Samara State Technical University, 2011. P. 12-15. (In Russ.)
  4. Nosov N.V., Abramov A.D., Haustov V.I. Research of roughness of surface rollers with modified contact on the basis of analysis of thear autocorrelation functions // Vestnik of the Samara State Aerospace University. 2009. No. 3(19), рart 2. P. 45-54. (In Russ.)

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