Penza, Penza, Russian Federation
Penza, Russian Federation
Samara, Russian Federation
The purpose of the study is to increase the strength of the collected compounds and to expand the technological accuracy of the method of Assembly with an interference fit. Fixed press-fit connection with interference are widely used in machine building, when the transfer of substantial axial forces are required, torques or combined loads from their joint action. Resistance to mutual misalignment of the parts in these compounds is created and supported by the forces of elastic deformation on the mating surface of the covered part (shaft) and stretching on the mating surfaces of the covering parts (holes) is proportional to the magnitude of the preload in the connection. In such compounds, the diameter of the shaft before Assembly is always larger than the diameter of the hole. In the article the analysis of the known different ways of joining parts with interference fit, including hydraulic presses. The second problem is solved due to the fact that the connection details with tightness is carried out by pressing the press stroke from one detail to another, and the breakdown of the compounds obtained by the relative longitudinal movement of parts, in which the breakdown is carried out periodically in the process of pushing through the transfer of force from the press stroke to pressed items to the elastic connection. The force on the press stroke is created by a hydraulic cylinder with large displacement, a resilient connection between the slider and pressed item performs in the cylinder, the fluid pressure and volume which can be adjusted by changing the stiffness and capacity of the drive RAM, as well as the magnitude of its longitudinal movement during the disruption. The scheme of Assembly of the connection de-hoist with tension. Original technical solution for press fit connection parts extends the technological possibilities of the equipment, increases the strength of the collected compounds and can be used in machine building, particularly in mechanical Assembly processes and, in particular, in the repair and production of agricultural machinery.
technology, assembly, joint, preload, elastic, link
1. Grechishchev, E. S. Compounds with interference: calculations, design, manufacturing / E. S. Grechishchev, A. A. Ilyashen-ko. – M. : Engineering, 1981. – 247 p.
2. A. c. № 1034866 USSR, IPC B23P 11/02, F16B 4/00 (2006.1) Method of joining parts with interference / E. V. Ryzhov, N. E. Kurnosov, I. I. Voyachek. – appl. 02.22.82 ; publ. 08.15.83, Bull. №30.
3. A. c. № 1171265 USSR, IPC B23P 11/02, F16B 4/00 (2006.1) Method of joining parts with interference / E. V. Ryzhov, N. E. Kurnosov, I. I. Voyachek. – appl. 04.12.83 ; publ. 07.08.85, Bull. №29.
4. Pat. №2522070 of the Russian Federation, the IPC B23P 11/02, B23P 19/027 (2006.1) Method of joining parts with interference / Simanin N. A., Simanin S. N., Prokhorov A. M. – appl. 03.12.2012 ; publ. 07.10.2014, Bull. №19.
5. Simanin, N. A. Improvement of automatic control systems of hydraulic drives of industrial equipment / N. A. Simanin, I. A. Polyakov // The results of dissertation research. – M. : Russian Academy of Sciences, 2013. – Vol. 4. – P. 122-132.
6. Simanin, N. A. Hydraulic system of automatic control of technological operations in engineering / N. A. Simanin, V. V. Golubovskii. – Penza : PC PSTU, 2009. – 155 p.
7. Simanin, N. A. Design elements and systems of automatic control of hydraulic drives of technological equipment / N. A. Simanin, V. V. Golubovskii. – Penza : PC PSTU, 2014. – 205 p.
8. Sveshnikov, V. K. Machine hydraulic drives: reference library designer. – 4th ed. rev. and enl. – M. : Engineering, 2004. – 512 p.
9. Erlenekov, S. V. Determination of the basic technological parameters of a hydraulic press with assembly connections with a tightness / S. V. Erlenekov, N. A. Simanin // Proceedings of the universities. Mechanical Engineering. – 1987. – №9. – P. 153-157.
