The providing durability of the movable square-sided spline joints by electromechanical treatment of the working surfaces

Abstract

The article deals with the operating conditions and causes of loss of performance of movable involute splines joints. In order to ensure the durability of the movable involute splines joints, an effective method of hardening the working surfaces of the splined hub by electromechanical treatment is proposed. The influence of the current on the change of microstructure and microhardness in the electromechanical processing of the working surfaces of the spline bushing was determined. The obtained results of the comparative wear testing of samples involute splines joints depending on the time of testing. It is established that the use of electromechanical processing of the working surfaces of involute splines joints allows reducing the time of their running-in and increasing the wear resistance of the movable joints up to 2 ... 2.5 times.

The improvement of the technique for determining technical condition of repair and maintenance equipment

“…There is no chip formation at the cutting edge of the cutter during machining. One can also apply the empirical equation [15][16][17][18][19] to find the Ra parameter for conditions of finishing machining:…”

Calculation of temperature fields during finishing and strengthening electromechanical treatment of bodies of rotation moving along a helical line by a high-temperature source

“…Given the great importance of thermal processes on the nature of Electromechanical processing (EMP), the study of temperature fields in the processed part at EMP is devoted to the work Askinazi B. M. [1], Bagmutov V. P. [2] , etc. Some of the works [3,4,5] are of purely practical significance, in which the influence of technological modes of EMP on the temperature fields of the processed parts is considered. In a number of works [2,3,4], the task of theoretical analysis of thermal processes in the processed parts in EMP was set.…”

“…Some of the works [3,4,5] are of purely practical significance, in which the influence of technological modes of EMP on the temperature fields of the processed parts is considered. In a number of works [2,3,4], the task of theoretical analysis of thermal processes in the processed parts in EMP was set. But, given the complexity of studying thermal phenomena, which are influenced by technological factors of the EMP process, the distribution of heat between contacting bodies, heat exchange with the environment, heat saturation and heat transfer, etc., the theory of thermal processes of EMP is not developed in sufficient depth.…”