A method of bushing loading

Abstract

The invention belongs to the technical field of shaft system loading of a power tuning gyroscope and particularly relates to a lining loading method which is applied to shaft system assembling of the power tuning gyroscope. Firstly, an upper bearing is mounted at the upper end of a driving shaft in a back-to-back installation manner and an inner ring of the upper bearing is fixed on the driving shaft; secondly, an outer ring lining sleeves the driving shaft and the end face of the outer ring lining is kept to be matched with an outer ring end face of the upper bearing, and a lower bearing is mounted in a back-to-back installation manner and the end face of the outer ring lining is kept to be matched with the outer ring end face of the lower bearing; meanwhile, a gap is formed between a shaft shoulder of the driving shaft and the inner ring of the lower bearing; and finally, a shaft system pre-tightening force loading module is arranged at the upper end of the inner ring of the lower bearing and a vertically-downward pre-tightening force is applied to the inner ring of the lower bearing; and the inner ring of the lower bearing is fixed on the driving shaft. According to the lining loading method, an outer ring of the bearing keeps leveled by using a lining loading manner and the pre-tightening force is accurately controlled after the shaft system assembling of the power tuning gyroscope; and the assembling precision is improved and the parallelism degree of the outer ring of the bearing is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of shaft system loading of a power tuning gyroscope, and in particular relates to a bushing loading method, which is applied to the assembly of a shaft system of a power tuning gyroscope. Background technique [0002] At present, the precision instrument shaft system used by the dynamic tuning gyroscope generally adopts a positioning pre-tightening method to add a certain pre-tightening force to the shaft system. It is required that the preload force of the gyro shaft system be accurately and controllable, and at the same time require the parallelism of the two outer rings of the bearing after assembly. [0003] There are two traditional loading methods for the gyro shaft system. The first is to use a spring to add a certain load to the bearing, and then use glue to fix the inner ring of the bearing to the drive shaft. This method can add more accurate pre-tightening force to the shafting, but due to the po...

AI Technical Summary

Problems solved by technology

However, adjusting the height of the bushing by a few microns will cause a large change in the preload of the shafting

In order to ensure the accurate pre-tightening force added to the shafting, it is necessary to grind and adjust the height of the bushing and test the pre-tightening force repeatedly, resulting in a long assembly cycle of the shafting system, which is not conducive to mass production

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