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.
Highlights
In domestic and foreign automotive and agricultural machinery to transfer power from the power unit to the engines, working bodies and other units and units of the machine are widely used splined connections
This work aims at to study the influence of electromechanical processing (EMP) of the working surfaces of the movable square-sided spline joints for their wear resistance
EMP of working surfaces of splined hubs is made by the spline tool [6, 8, 9, 10] of chromium copper BCr1
Summary
In domestic and foreign automotive and agricultural machinery to transfer power from the power unit to the engines, working bodies and other units and units of the machine are widely used splined connections. The performance of the splined connection is affected by the violation of the alignment of the joint, technical malfunctions and breakdowns of the driven working bodies, nodes, various road and soil-climatic conditions, depth of tillage, clogging, soil adhesion and a number of other factors. It is established that the main cause of loss of operability of mobile square-sided spline connections is the wear out of contacting lateral surfaces of splines of a shaft and a splined hub. In this regard, the relevant direction of increasing the wear resistance and durability of splined joints is the use of effective strengthening technologies
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