Involute spline pair fretting wear testing platform

Abstract

The invention relates to an involute spline pair fretting wear testing platform. A rack is equipped with an involute inner spline to be tested and an involute outer spline to be tested. A wear-proof casing is embedded between a sleeve and the involute inner spline. A pull force sensor is on a pull rod. A rack guide rail is provided with a vertical screw for adjusting an axial force size and a horizontal screw for adjusting a loading position. A motor drives an involute spline pair to rotate relative to the wear-proof casing. The position of the wear-proof casing relative to the involute inner spline is adjusted through the horizontal screw, and the pull force applied to the involute inner spline by the wear-proof casing is adjusted through the vertical screw. The working conditions of the involute inner spline and the involute outer spline under axial force are simulated, the pull force change is observed in real time through the pull force sensor, the axial force effect with a variable position and size borne by the involute spline pair in working is simulated, the fretting wear laws of the involute inner spline and the involute outer spline are measured and determined, and an involute spline pair fretting wear test is simplified.

Description

technical field [0001] The invention relates to the technical field of friction and wear measurement, in particular to an involute spline pair fretting wear test bench. Background technique [0002] The involute spline pair has the characteristics of uniform load, large bearing capacity and good guidance, so it is widely used. However, in the aviation power transmission, due to the harsh working conditions of the involute spline pair, there are some situations such as the final shaft force, which makes the spline contact tooth surface wear seriously, resulting in the failure of the connection. At present, there is a lack of test benches that can study the fretting wear laws of involute spline pairs under different loading positions and different final pressures, and the related friction and wear measurement test benches have defects in many aspects such as function, structure, and practicability. [0003] Patent CN 106053063 A discloses "a differential planetary gear shaft ...

AI Technical Summary

Problems solved by technology

[0003] Patent CN 106053063 A discloses "a differential planetary gear shaft fatigue wear test bench and its test method". However, the fatigue wear test bench can only apply final force to the rotating part at two positions, and cannot apply a controllable final force to any position in the axial direction of the rotating part, nor can it simulate the axis of the rotating part during work. Real-time changes in the position of the crimping force, the simulation situation is limited

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