METHOD OF ACHIEVING ACCURACY OF THERMO-MECHANICAL TREATMENT OF LOW-RIGIDITY SHAFTS
Antoni Świć 1  
,  
 
 
More details
Hide details
1
Institute of Technological Systems of Information, Lublin University of Technology, Nadbystrzycka Street 36, 20-618 Lublin, Poland
2
Faculty of ТМ, Togliatti State University, 12 Belorusskaia Street 445021 Tоgliatti, Russia
3
Department of Enterprise Organization, Lublin University of Technology, Nadbystrzycka Street 38, 20-618 Lublin, Poland
Publish date: 2016-03-01
 
Adv. Sci. Technol. Res. J. 2016; 10(29):62–70
KEYWORDS
ABSTRACT
The paper presents a method combining the processes of straightening and thermal treatment. Technological processes with axial strain were considered, for the case of heated material and without its heating. The essence of the process in the case of heated material consisted in the fact that if under tension all longitudinal forces in the first approximation are uniform - the same strains are generated. The presented technological approach, aimed at reducing the curvature of axial-symmetrical parts, is acceptable as the process of rough, preliminary machining, in the case of shafts with the ratio L/D≤100 (L – shaft length, d – shaft diameter) and without a tendency of strengthening. To improve the accuracy and stability of geometric form of low-rigidity parts, a method was developed that combines the processes of straightening and heat treatment. The method consists in that axial strain – tension, is applied to the shaft during heating, and during cooling the product is fixed in a fixture, the cooling rate of the shaft being several-fold greater than that of the fixture. A device is presented for the realisation of the method of controlling the process of plastic deformation of low-rigidity shafts. In the case of the presented device and the adopted calculation scheme, a method was developed that permits the determination of the length of shaft section and of the time of its cooling.
 
REFERENCES (14)
1.
Draczew O., Świć A., Taranenko W., Taranenko G.: Modelowanie układu dynamicznego obróbki cieplno-mechanicznej wałów o małej sztywności. Postępy Nauki i Techniki, 5, 2010, 71–84.
 
2.
Draczew O., Świć A., Taranenko W., Taranenko G.: Podstawy teoretyczne i doświadczalne modelowania operacji obróbki cieplno-mechanicznej wałów o małej sztywności. Postępy Nauki i Technik, 5, 2010, 55–70.
 
3.
Halas W., Taranenko V., Świć A., Taranenko G.: Investigation of influence of grinding regimes on surface tension state. In: N.T. Nguyen et al. (Ed.) IEA/AIE 2008, LNAI 5027, Springer – Verlag Berlin Heidelberg, 2008, 749–756.
 
4.
Li H., Shin Y.C.: Integration of thermo-dynamic spindle and machining simulation models for a digital machining system. The International Journal of Advanced Manufacturing Technology, 40(7-8), 648–661.
 
5.
Lin C.W., Tu J. F., Kamman J. An integrated thermo-mechanical-dynamic model to characterize motorized machine tool spindles during very high speed rotation. International Journal of Machine Tools and Manufacture, 43(10), 2003, 1035–1050.
 
6.
Świć A, Taranenko W, Szabelski J.: Modelling dynamic systems of low-rigid shaft grinding. Eksploatacja i Niezawodność – Maintenance and Reliability 2(50), 2011, 13–24.
 
7.
Świć A., Gola A., Wołos D.: A method for increasing the economic effectiveness of the low rigidity shafts, Actual Problems of Economics, 11(161), 2014, 469–477.
 
8.
Świć A., Gola A.: Economic analysis of casing parts production in a flexible manufacturing system , Actual Problems of Economics, 3(141), 2013, 526–533.
 
9.
Świć A., Taranenko W., Gola A.: Analysis of the process of turning of low-rigidity shafts, Applied Mechanics and Materials, 791, 2015, 238–245.
 
10.
Świć A., Wołos D., Zubrzycki J., Opielak M., Gola A., Taranenko V.: Accuracy control in the machining of low rigidity shafts, Applied Mechanics and Materials, 613, 2014, 357–367.
 
11.
Świć A.: Technologia obróbki wałów o małej sztywności. Lublin: Wydawnictwo Politechniki Lubelskiej 2009.
 
12.
Taranenko G, Taranenko W, Świć A, Szabelski J.: Modelling of dynamic systems of low-rigidity shaft machining. Eksploatacja i Niezawodnosc – Maintenance and Reliability 4(48), 2010, 4–15.
 
13.
Taranenko G., Taranenko V., Szabelski J., Świć A.: Systemic analysis of models of dynamic systems of shaft machining in elastic-deformable condition. Applied Computer Science, 3(2), 2007, 115–138.
 
14.
Taranenko W., Świć A.: Urządzenia sterujące dokładnością obróbki części maszyn o małej sztywności. Wydawnictwo Politechniki Lubelskiej, Lublin 2006.