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2012

УДК 621.928.9


Batluk1 V., Paranyak1 N., Melnikov2 O.

1 - National University «Lviv Polytechnic», Lviv, Ukraine; 2 - Ukrainian Academy of Printing, Lviv, Ukraine


CONSTRUCTION OF MODELS OF FACTORS EFEKTYVNIOSTI DEDUSTERS NEW DESIGN

 

Abstract. The model of hierarchy of factors of efficiency of work of dust colection of new construction is developed. Except for arrangement of factors after importance of their influence this model does possible the subsequent dividing by dependent (internal) components for the exposure of degree of weakening or strengthening of action cause his facto. A result of taking of the chosen factors to the proper hierarchical level is objective so, as far as his authenticity is provided the use of the known principles of theory
of analysis of the systems, design theory, methodology of research and decision of problems. Appearance of concrete obstacle at certain level substantially depends on the set connections between them. Priority of action of factor on efficiency of work of dust collection of new construction is a size relative and can be changed depending on the expert estimation of measure of influence of factor on the probed process.The probabilistic model of hierarchy of factors of efficiency of work of the developed vehicle is
synthesized in the total, and on its foundation in the first approaching the model of priority influence of certain factors is developed on efficiency of work of dust collection of new construction.


Keywords:  Factors hierarchy model, linguistic variables, dust collector


 

REFERENCES

  1.  Batluk V. A. Akustichnі pilovlovljuvachі [Acoustic dedusters]. (Мonograph). Lvіv: Afіsha, 2000. 208 p.
  2. Batluk V.A., Batluk V.K., Mel'nikov O.V., Dmitruk V.V. Pilovlovljuvach іz cilіndrichno-konіchnim vіdokremljuvachem [Dust collector with cylindrical-conical separator]. Patent Ukrainy no 59260 A, 15.08.2003.
  3.  Batluk V.A., Azars'kij K.І., Mel'nikov O.V. Sekcіjnij pilovlovljuvach [Sectional dust collector] Patent Ukrainy no 57117, 16.06.2003.
  4. Batluk V.A., Proskurіna І.V., Mel'nikov O.V. Mokrij pilovlovljuvach іz specіal'noju formoju zhaljuzі [Wet dust collector with a special form of blinds] Patent Ukrainy no 29965 Ukraїna, 11.02.2008.
  5.  Batluk V.A., Paranjak N.M. Pilovlovljuvach іz poperedn'oju ochistkoju [Dust collector with the previous cleaning]. Patent Ukrainy no 50126 25.05.2010
  6.  Batluk V.A., Paranjak N. M. Pilovlovljuvach іz teploobmіnnikom і zmіjovikom [Dust collector with a heat exchanger and coils]. Patent Ukrainy no 50128, 25.05.2010.
  7. Batluk V.A., Paranjak N. M. Ciklon іz gorizontal'nim vіdokremljuvachem [Cyclone separator with horizontal]. Patent Ukrainy no 20786, 15.02.2007.
  8. Oljanishen T.V., Storozhuk V.M., Pіh І.V., Mel'nikov O.V. Model' faktorіv nesprijatlivogo vplivu na otochujuche seredoviwe [Model factors adverse environmental impact ] (Tehnol. і tehnіka drukarstva Vipusk. 3 (33)). 2011. pp.82–88.
  9. Ljamec V. I. Tevjashev A. D. Sistemnyj analiz: vstupitel'nyj kurs [Systems analysis: introductory course] (2nd ed., Revised and updated ) Kharkov. 2004. p.448.

 

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УДК 539.3


Babenko A., Lavrenko Ia., Kurenkov N.

The National Technical University of Ukraine «Kyiv Polytechnic Institute», Kyiv, Ukraine ( This e-mail address is being protected from spambots. You need JavaScript enabled to view it ,
This e-mail address is being protected from spambots. You need JavaScript enabled to view it , This e-mail address is being protected from spambots. You need JavaScript enabled to view it )


INFLUENCE OF GYROSCOPIC EFFECT ON FLUCTUATIONS OF THE CENTRIFUGE SHAFT

Purpose. Definition of influence of gyroscopic effect on vibrations of a laboratory centrifuge. Design/methodology/approach. Vibrations take into account six degrees of freedom. With small angles of a nutation angular speeds of forward and back precession, trajectories of movement of a symmetric gyroscope. Experimentally were defined rigidity of elastic support of a centrifuge. Were found dependences of own frequencies depending on frequency and direction of rotation of a centrifuge. The
correlation of results of numerical and experimental definition of values of own frequencies were shown. The model of a gyroscope accepted in article is calculated on its use at the solution of a number of applied tasks.
Findings. With influence of gyroscopic effect on every degree of freedom we have two resonant frequencies instead of one.
Originality/value. This research was important and original in field of vibrations of medical machines, which usually work with high values of frequences. It shows changes of own frequence depending on work frequence. It can help to avoid a resonance during operation.


Keywords: Vibrations, own frequence, gyroscopic effects, vibrations of centrifuge, Campbell's chart.

 

REFERENCES

  1.  Zeytman M.F. Kushul M.J. Yzhybnye kolebaniya vertykalnyh rotorov v hravytatsyonnom pole. Mashynovedenye, 1968, no. 5.
  2. Kushul M.J. Dvijenie gyroscopa s hybkoy osyu pod deistviem syli tyajesty i yprygih svoystv pry malyh uhlah nutatsyy i ystoichivosti ego verticalnogo vrascheniya. PMM, 1968, t.32, vyp.4
  3.  Magnus K. Die Schwingungen des Kreisels mit der Massen elastisch gekoppelt ist. Proc. of the conference on vibration at Göttingen and Kassel, 6-8 October 1938, VDI – Verlag, 1939;
  4.  Magnus K. Untersuchungen zur Verminderung störender Rüttelschwingungen an Kreiselgeräten. Z. angew. Math. und Mech., 1940, Bd. 20, Heft 3
  5. Maunder L. Sobstvennыe frequency oscillations of a free gyroscope with elastic shaft, setting in Mount gimbal. Mechanics, Sat. Trans. and obz. foreign lang. period. lit., 1961, no. 5, 69
  6. Uyppel A.P.R., Maunder L. Fluctuations freely gyroscope with neodnorodno upruhoy osyu. Mechanics, Sat. Trans. and obz. foreign lang. period. lit., 1964, no. 6, 88
  7. Krementulo V. Application of the method of Lyapunov echoes rolled Study Stability motion gyroscope with accounting elastic properties wasps rotor. PMM, 1961, t.25, no. 3, p.579
  8.  Gusarov A.A. Automatic balancing rotorov machines. Moscow: Nauka, 1979. 306p.,
  9. Nesterenko V. Automatic balancing rotorov pryborov and machines so mnogimi degrees of freedom. Tomsk, Tomsk State University, 1985. 84p.
  10. Dymentbeg F.M., Shatalov K.T., Gusarov A.A. Fluctuations machines. Moscow, Mashinostroenie, 1964. 308p.
  11. Zvynohorodskyy N.V., Kushul M.J. Study vybratsyy bыstrohodnыh spindles. Izv. AN SSSR, OTN, no. 10, 1956.
  12.  Pavlovsky M.A., Putyata T.V. Theoretical mechanics. Kyiv, 1985. 328p.
  13. Lurie A.I. Analytycheskaya mechanics. Moscow, 1961. 824p.
  14.  Arnold V.I. Mathematical Methods Classical Mechanics. Nauka, 1974. 431p.
  15. Fischer J., Strackeljan J.: Some considerations of modelling internal friction in rotor shaft connections, Proceedings of 12th World Congress in Mechanism and Machine Science IFToMM 2007.
  16. Fischer J., Strackeljan J.: Stability Analyses of High Speed lab centrifuges considering internal damping in rotor shafts, Technische Mechanik, Band 26, Heft 2, pp 131-147, 2006.
  17. Fischer J., Strackeljan J.: FEM-Simulation and stability analyses of high speed rotor systems .7th IFToMM-Conference on Rotor Dynamics, Vienna, Austria, 2006.

 

 


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УДК 621.941.01.002.3



Malafeev Y.М.
The National Technical University of Ukraine «Kyiv Polytechnic Institute», Kyiv, Ukraine ( This e-mail address is being protected from spambots. You need JavaScript enabled to view it )


FORMATION OF PERFORMANCE AND QUALITY PARAMETERS OF DETAILS FROM PERMALLOY 50N AT TURNING

 

Abstract. In various industries, such as instrumentation, electronics, aviation, modern technology processing soft magnetic materials is widely used. The processing of such materials reduces their basic performance - magnetic properties change qualitative characteristics - a supersonic boundary layer, the degree of hardening, the surface roughness. Therefore, more research is needed on the effect of treatment on the magnetic properties of the material and its quality parameters. From the literature it is known that the industry turning subtle details of permalloy alloys belonging to soft magnetic materials, it is very rarely used in the final
processing operations, despite higher performance compared to grinding. Pre-selection tool marks made taking into account its impact on the performance and quality characteristics of these alloys. The best results are shown KNT16 tungsten carbide, which provides the minimum value of the fall of the maximum magnetic permeability permalloy 50H. In the experiments, the influence of changing speeds and feeds at a constant cutting depth on the surface finish and the magnitude of the maximum magnetic permeability. The value of tool wear on the back of not more than 0.15 mm and varied on three levels. The research allowed to establish a number of mathematical functions to calculate the surface roughness of the machined surface and the values of the maximum magnetic permeability. The efficiency of magnetic parts and components of magnetic circuits are characterized not only the roughness of the machined surface, but its performance characteristics, which include their magnetic properties. Therefore, apart from excluding the value of roughness of the machined surface, the second constraint was selected value falling maximum
magnetic permeability. Optimization of the data limits for turning alloy 50H carried out using the method LPτ - sequences having the best characteristics of uniformity among all currently known uniformly distributed sequences.


Keywords: soft magnetic materials, permalloy 50H, advanced technology, tool materials, tungsten hard alloys, performance, quality characteristics, fine turning, chip formation, heat, cutting forces, cutting temperature, wear, micro-hardness, hardening, softening, roughness of the machined surface, the maximum magnetic permeability method LPτ - sequences.

 

REFERENCES
1. Preobrazhenskij A.A. Magnitnye materialy i jelementy. (Magnetic materials and elements) Moscow: Vysshaja shkola, 1986. 352 p.
2. Rejnbot G.Magnitnye materialy i ih primenenie. (Magnetic materials and their applications) Leningrad: Jenergija,1974. 384p.
3. Spravochnik po jelektrotehnicheskim materialam. (Handbook of electrotechnical materials) (Pod red. Korickogo Ju.V., Pasynkova V.V., Tareeva B.M.), t. 3. Moscow: Jenergija, 1976. 896 p.
4. Precizionnye splavy. Spravochnik. (Precision alloys. Handbook.) Moscow: Metallurgija, 1983. 440 p.
5. Hek K. Magnitnye materialy i ih tehnicheskoe primenenie. (Magnetic materials and their technical application) Moscow: Jenergija, 1973. 303 p.
6. Vonsovskij S.V. Magnetizm. (Magnetism.) Moscow: Nauka,1971. 1032 p.
7. Kolesov I.M. Osnovy tehnologii mashinostroenija. (Fundamentals mechanical engineering technology) Moscow: Mashinostroenie.V 2-h. t., 1977.
8. Tehnologija mashinostroenija. (Technology of machine building) Pod red. A.M. Dal'skogo. V 2-h. t. – Moscow: Izd – vo MGTU im. N.Je. Baumana, 1998.
9. Matalin A.A. Tehnologija mashinostroenija. (Technology of machine building) Leningrad: Mashinostroenie, 1985. 472 p.
10. Klepikov V.V., Bodrov A.N. Tehnologija mashinostroenija. (Technology of machine building) Moscow: FORUM.2008. 864 p.
11. Ryzhov Je.V., Suslov A.G., Fedorov V.P. Tehnologicheskoe obespechenie jekspluatacionnyh svojstv detalej mashin. (Technological provision of operational properties of machine parts) Moscow: Mashinostroenie, 1979. 176 p.
12. Demkin N.B., Ryzhov Je.V. Kachestvo poverhnosti i kontakt detalej mashin. (Quality of the surface and the contact details of machines) Moscow: Mashinostroenie, 1981. 244 p.
13. Suslov A.G. Tehnologicheskoe obespechenie parametrov sostojanija poverhnostnogo sloja detali. (Technological provision the state parameters surface layer of part) Moscow: Mashinostroenie, 1987. 207 p.
14. Matalin A.A. Kachestvo poverhnosti i jekspluatacionnye svojstva detalej mashin. (Surface quality and operational properties of machine parts) Moscow – Leningrad: Mashgiz, 1956. – 252 p.
15. Matalin A.A. Tehnologija mehanicheskoj obrabotki. (Mechanical processing technology) Leningrad: Mashinostroenie, 1977. 462 p.
16. G. V. Samsonov, V. K. Vitrjanjuk, N.S. Ravskaja i dr. Fiziko-mehanicheskie svojstva bezvol'framovyh tverdyh splavov. (Physical and mechanical properties of tungstenfree hard alloys). V kn.: Tehnologija izgotovlenija izdelij iz tverdosplavnyh smesej v uslovijah melkoserijnogo proizvodstva. Kyiv : Resp. dom jekonom. i nauch.-tehn. propagandy, 1973, pp. 60 – 64.
17. Hrul'kov V. A. Mehanicheskaja obrabotka izdelij iz magnitnyh materialov v priborostroenii. (Mechanical processing products from magnetic materials in instrument manufacture) Moscow: Mashinostroenie, 1966.185 p.
18. Kolesov I.M. Osnovy tehnologii mashinostroenija. (Fundamentals of mechanical engineering technology) Moscow: Vysshaja shkola, 2001. 591 p.
19. Bodrov B.M. Osnovy tehnologii mashinostroenija. (Fundamentals of mechanical engineering technology) Moscow: Mashinostroenie, 2005. 736 p.
20. Yashcheritsyn P.I. Teorija rezanija. (Theory of cutting) Minsk: Novoe znanie, 2006. 528 p.
21. Makarov A.D. Optimizacija processov rezanija. (Optimization of cutting processes) Moscow: Mashinostroenie, 1976. 278 p.
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25. Malafeev Ju.M. Kachestvo poverhnosti pri lezvijnoj obrabotke splava 50N. (Surface quality with processing blade alloy 50H). V zhurn. «Vіsnik». Mashinobuduvannja. № 63, pp. 32 – 35.
26. Sobol' I.M., Statnikov R.B. LP-poisk i zadachi optimal'nogo konstruirovanija. (LP-search and problems of optimal designing). V kn.: Problemy sluchajnogo poiska. Riga: Znanie, 1972. no 1. pp. 117 – 135. 

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