THE STUDY OF ACCURACY OF PROCESSING ON PRECISION PRODUCTION EQUIPMENT


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Abstract

Metal-cutting machines involve complex production systems changing their parameters during the treatment process that results in degradation of processing accuracy. There are many factors influencing the processing accuracy but the main factor is the precision of production equipment. The potentialities of classical approaches to the machines accuracy increase have been practically exhausted and now they make no economic sense. That is why the article covering the study of accuracy of processing on precision production equipment is very important now.    

The article describes the results of the study of accuracy of processing of deep holes using the 2A459AF4 precision horizontal coordinate boring machine.

The goal of the study is to prove the influence of elastic power deformations of the frame construction (bending and torsion) of precision horizontal coordinate boring machine on the processing accuracy. 

The measurements of deviation from circular form of a hole were carried out on the base of a special unit under the conditions most closely resembling the real factory world. Basing on the results of the holes selection, the authors plotted the dot diagrams visually indicating the character of deviation of the processed hole axis during its processing. The authors determined that the value of the hole axis deviation in two perpendicular planes is an unstable quantity and depends on the position of moving elements of the machine processing system during the process of treatment. When the holes are located closer to the table reflector, the value of axis deviation reduces. The presence of elastic power deformations of the frame construction causes the blank part displacement and, subsequently, the processed hole axis deviation about the tool axis.

The study was carried out according to the own methods based on the following application software package: Kompas 3D V12, ANSYS Workbanch, MathCAD. 

About the authors

Boris Mikhailovich Gorshkov

Volga Region State University of Service, Togliatti

Email: kaf_ekis@tolgas.ru

Doctor of Engineering, Associate Professor, Head of the Department «Service of technical and technological systems»

Россия

Oksana Yurievna Remneva

Volga Region State University of Service, Togliatti

Author for correspondence.
Email: RemnevaOJ@mail.ru

candidate of technical sciences, assistant at the Department «Service of technical and technological systems»

Россия

References

  1. Bazrov B.M. Prichini obrazovaniya pogreshnostey obrabotki detaley. Adaptivnoe upravlenie stankami [Causes of inaccuracy of parts processing. Adaptive control of machines]. Moscow, Mashinostroenie publ., 1989, 358 p.
  2. Vasilyev A.S. Total uncertainty of processing and mutual influence of its components. Izvestiya vuzov. Mashinostroenie, 1999, no. 3, pp. 89–96.
  3. Seregin A.A. Evaluation of accuracy of metal-cutting systems. Stanki i instrument, 1991, no. 1, pp. 29–31.
  4. D’yakonova N.P. Evaluation of accuracy of metal-cutting machines according to the load-deflection curve. Stanki i instrument, 1984, no. 9, pp. 6–7.
  5. Korsakov V.S. Tochnost mekhanicheskoy obrabotki [Accuracy of mechanical processing]. Moscow, Mashgiz publ., 1961, 380 p.
  6. Yurkevich V.V. Methods of testing of processing machines. Mashinostroitel, 2006, no. 8, pp. 27–36.
  7. Agafonov V.V. Theoretical determination of gravity center and main axel position of machine elastic system. STIN, 2005, no. 8, pp. 29–31.
  8. Markaryan Yu.A. Control of deep hole drilling process. STIN, 2007, no. 6, pp. 5–7.
  9. Remneva O.Yu., Rzhevtsev G.D., Gorshkov B.M. Methods of experimental study of accuracy of processing using horizontal coordinate boring machines. Sbornik statey VI mezhdunar. nauchno-prakt. konf. “Nauka i tvorchestvo: vzglyad molodikh professionalov”. Tolyatti, 2012, vol. 2, pp. 25–27.
  10. Bobrik P.I. Svyaz’ mikro- i makrogeometrii poverkhnostey, poluchennikh mekhanicheskoy obrabotkoy [Relation of micro- and macro-geometry of surfaces obtained during mechanical processing]. Moscow, MATI publ., 1952, 151 p.
  11. Gorshkov B.M., Samokhina N.S., Remneva O.Ju. Research of technological systems of precision horizontal coordinate boring machines by a method of final elements. Metalloobrabotka, 2012, no. 5-6, pp. 69–73.
  12. Kosov M.G., Korzakov A.A. Modeling of contact parts stiffness with regard to the roughness relief of their suface. STIN, 2003, no. 12, pp. 23–25.
  13. Solonin I.S. Primenenie matematicheskoy statistiki v tekhnologii mashinostroeniya [Application of mathematical statistics in mechanical engineering]. Sverdlovsk, Sredne-Uralskoe knizhnoe izdatelstvo publ., 1966, 199 p.
  14. Salov P.M., Salova D.P. Ratsionalnoe ispolzovanie rabochey poverkhnosti abrazivnikh krugov [Rational use of the working surface of abrasive wheels]. Cheboksari, Cheboksarsky politekhnichesky institut publ., 2010, 332 p.
  15. Agafonov V.V. Determination of working errors taking into account the dynamic characteristics of machine elastic system. STIN, 2006, no. 5, pp. 10–13.
  16. Vidmanov Yu.I. Dinamika nesushchikh system stankov (stanin) pri kompensatsii ikh silovikh deformatsiy [Dynamics of machine frame constructions (bodies) when compensating their power deformations]. Kuybishev, KuAI publ., 1974, 82 p.
  17. Salov P.M., Kravchenko B.A. Printsipi samoorganizatsii iznosa shlifovalnikh krugov [Principles of self-organization of grinding wheels wear]. Samara, Samarsky gos. tekhn. universitet publ., 2001, 118 p.
  18. Bushuev V.V. Compensation of elastic deformations in machines. Stanki i instrument, 1991, no. 3, pp. 42–46.
  19. Bushuev V.V. Machines stability. STIN, 1996, no. 8, pp. 26–32; no. 9, pp. 17–20.
  20. Kirilin Yu.V., Tabakov V.P., Eremin N.V. Methods of the machine frame construction modeling. STIN, 2004, no. 6, pp. 13–17.

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