An automatic transmission case oil seal assembly device and method

Abstract

The invention discloses an automatic transmission housing oil seal assembly device and method, which comprises a sleeve, a guide shaft, an oil seal and an adjusting nut; the bottom peripheral surface of the sleeve is provided with threads, and the adjusting nut is nested on the sleeve through the threads; The top end of the shaft extends into the sleeve from the bottom end of the sleeve, and the diameter of the guide shaft near the bottom end is larger than the rest of the guide shaft; the oil seal is nested on the largest diameter part of the guide shaft, and the top end of the oil seal is attached to the bottom end of the sleeve. It can control the distance between the bottom end of the adjusting nut and the bottom end of the sleeve. This distance is the assembly depth of the oil seal, so that the moving distance of the oil seal can be controlled, and the assembly depth of the oil seal can be accurately controlled. Fitting setting, to ensure that the mating surface is always perpendicular to the axial direction during the oil seal assembly process, to ensure that the oil seal does not tilt during assembly, and to ensure the assembly effect of the oil seal.

Description

technical field [0001] The invention belongs to the field of automobile transmission production and manufacturing, and relates to an automatic transmission housing oil seal assembly device and method. Background technique [0002] The oil seal is a key component in the mechanical transmission structure. The extremely narrow sealing contact surface of the sealing lip contacts the rotating shaft with a certain pressure, and the mechanical transmission parts are realized under the action of the oil film formed between the oil seal cutting edge and the rotating shaft. seal. Oil seal assembly is an important link in the transmission assembly process. There are currently many tools for oil seal assembly, which can be roughly classified into three categories: automatic oil seal assembly equipment, semi-automatic oil seal assembly equipment, and manual oil seal assembly equipment. Compared with automatic oil seal assembly equipment, oil seal manual assembly equipment has the advant...

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Problems solved by technology

[0003] For the integral case of the differential and the transmission, in the process of oil seal assembly in the area of ​​the differential case, it is necessary to ensure the relative axial position between the oil seal and the differential shaft to realize the alignment of the differential. Shaft seal, but actually in the process of assembling the oil seal, the assembly depth of the oil seal is determined by the distance between the upper blank surface of the housing and the upper end surface of the oil seal, and the machining and assembly errors of the housing and the differential assembly and the The change in structural design makes it difficult to ensure the oil seal assembly depth of each transmission through the distance between the upper blank surface of the housing and the upper end surface of the oil seal with only ordinary oil seal assembly tools, resulting in insufficient oil seal assembly, inconsistent oil seal assembly depth, Excessive press-in of the oil seal leads to deformation of the oil seal, poor retention of high-quality assembly of the oil seal, etc.

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