Auxiliary measurement device for assembling height of tapered roller bearing of output shaft system of gearbox

Abstract

The invention discloses an auxiliary measurement device for the assembling height of a tapered roller bearing of an output shaft system of a gearbox. By virtue of a standard guiding mechanism, the bottom of the auxiliary measurement device is vertically arranged on a mounting plane of a gearbox shell, penetrates into a to-be-measured shaft system and is in clearance fit with the to-be-measured shaft system so as to guide and peripherally restrain the assembly of the to-be-measured shaft system, so that the possibility that the to-be-measured shaft system inclines during assembling in a pilot stage is avoided, the measurement accuracy is improved, and the assembling accuracy of a bearing friction torque test carried out in the subsequent process is guaranteed; furthermore, the auxiliary measurement device is simple in structure, flexible to operate, easy to prepare and relatively low in cost; and besides, a balancing weight is arranged at the top of the to-be-measured shaft system, so that the rotation eccentricity during the measurement can be reduced, and a measurement result is relatively accurate.

Description

technical field [0001] The invention relates to the field of gearbox measurement, in particular to an auxiliary measuring device for the assembly height of a tapered roller bearing of an output shaft system of a gearbox. Background technique [0002] In the field of automotive transmissions, whether it is MT, AT, DCT (manual transmission, automatic transmission, dual clutch transmission), etc., tapered roller bearings used to support the rotation of the shaft are widely used, and due to the characteristics of tapered roller bearings Preload must be carried out during assembly to ensure that the entire shafting has sufficient rigidity and the bearing itself can work under an appropriate shafting clearance. [0003] For the preload assembly of tapered roller bearings, the current mainstream method is to measure the height of the bearing after it is assembled to the shafting and the depth of the shell by a height gauge, so as to select the appropriate thickness of the adjusting...

AI Technical Summary

Problems solved by technology

[0008] The disadvantage of the first prior art (direct measurement): since the inner and outer rings of the tapered roller bearing are separated, it is impossible to judge whether the assembly state of the shaft system is deflected after the shaft system is placed on the housing, even if the The addition of the counterweight device can only reduce the rotation eccentricity in the measurement, and cannot solve the judgment of the shafting deflection that will occur at the beginning of the assembly

[0009] The shortcoming of the second kind of prior art (measuring workbench measurement): the measuring workbench can guarantee the verticality of the shafting, has high measurement accuracy at the same time, and can directly measure the height of all shaftings, but this scheme also has its disadvantages: only For shafting in mass production, it is impossible to invest a lot of money in customizing special planes during the trial production stage of new products, and the flexibility is not enough

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