A reliable connection and adjustable bearing preload structure and assembling method

Abstract

The invention discloses a reliably connected and adjustable bearing pre-tightening structure and an assembling method. In the present invention, two adjusting rings are installed on the outer thread surface of the rotating shaft, and a gap is left between the two adjusting rings. Under the action of the tightening force of the screws on the two adjusting rings, the two adjusting rings are deformed and fixed on the rotating shaft. The gap of the ring can be adjusted, so as to control the tightening force of the adjustment ring and the rotating shaft, and realize the reliable connection between the threaded pressure ring and the rotating shaft when the stable platform bears the working load in the same or opposite direction as the bearing preload and greater than the preload force. The connection force between the threaded pressure rings on both sides and the rotating shaft can be adjusted according to the different working loads, and there is no need to disassemble the shaft system.

Description

technical field [0001] The invention relates to the technical field of bearing structure design, in particular to a reliably connected and adjustable bearing pre-tightening structure and an assembling method. Background technique [0002] The main function of the stable platform is to carry the load and realize the stable rotary motion of the load. The typical rotary shaft system of the stable platform is mainly composed of an inner ring frame, an outer ring frame, a rotating shaft, a bearing, a bearing pressure ring and a fastener. [0003] For bearings in precision machinery, in order to improve their rotation accuracy under working load, it is necessary to preload the bearing when assembling the bearing. A typical bearing preload structure is to install a washer between the rotating shaft and the inner ring of the bearing, and adjust the bearing preload by controlling the thickness of the washer. When the bearing preload needs to be readjusted, the shaft system must be di...

AI Technical Summary

Problems solved by technology

A typical bearing preload structure includes installing a washer between the shaft and the inner ring of the bearing. The adjustment of the bearing preload is achieved by controlling the thickness of the washer. When the bearing preload needs to be readjusted, the shafting must be disassembled to replace the gasket. Operation Complex, even recalibration and testing of other related links of precision shafting

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