Grease lubricated harmonic deceleration drive device and lubricating method thereof

Abstract

The invention discloses a grease-lubricated harmonic deceleration drive device and a lubricating method thereof. The motor output shaft drives a wave generator to rotate, and the teeth of the flexible wheel mesh with the teeth of the output rigid wheel, so that the output rigid wheel rotates and the output rigid wheel rotates. The wheel is connected with the drive shaft, and drives the drive shaft to rotate after deceleration, and provides radial and axial support to the drive shaft through the bearing. The drive shaft is supported by the bearing and rotates freely around the center line of rotation. The input rigid wheel and the output are on the gear meshing surface. Perfluoropolyether grease (601EF) is applied to the meshing part of the rigid wheel and the flexible gear teeth for vacuum grease lubricating film treatment, and the flexible bearing cage is treated with vacuum oil immersion; the oil immersion rate is controlled at 15% of the weight of the cage. 20%; creates a tortuous path between the drive shaft and stop lubricating surface and the outer surface. The use of the lubricant of the invention is not easy to volatilize and run off, greatly reduces the loss of the lubricant under the condition of low air pressure, and effectively increases the service life of the lubricant.

Description

technical field The invention relates to the technical field of space vehicle motion mechanisms, in particular to a grease lubricated harmonic deceleration drive device and a lubricating method thereof. Background technique The lubrication of the space mechanism is an important way to ensure the reliability and normal operation of the mechanism. It is used to ensure that the kinematic pair has good and stable friction characteristics during the movement. Usually, three types of methods are used: solid lubrication, oil lubrication and grease lubrication. The existing deceleration driving device usually adopts the solid lubrication method, which has the characteristics of wide temperature range and no volatilization. However, for the deceleration drive device using solid lubrication, it has the following disadvantages: a. It can only be used in low-speed, light-load motion conditions; b. The operating life is short, at 10 6 It is only suitable for occasions with low preci...

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