Gear burnishing fixture used for sleeve gears of synchronizers

Abstract

The invention provides a gear burnishing fixture capable of clamping a plurality of sleeve gears at a time, convenient to mount and used for sleeve gears of synchronizers. The invention provides a scheme as follows: the gear burnishing fixture used for the sleeve gears of synchronizers comprises a positioning disc; an inner circle of the positioning disc comprises an upper annular surface and a lower annular surface which are terraced, and further comprises a plurality of annular pressure discs arranged on an inner ring of the upper annular surface at equal intervals in the axial direction of the positioning disc; at least three thread column grooves are evenly distributed in the circumferential direction of each annular pressure disc; at least three thread holes corresponding to the thread column grooves in position are formed in the circumferential direction of the positioning disc; and threads are formed on an inner circle of the lower annular surface.

Description

technical field [0001] The invention relates to a jig, in particular to a gear extruding jig for a gear sleeve of a synchronizer. Background technique [0002] The synchronizer is an important part of the car. Its function is to synchronize the gears at the power output end with different speeds and the gears to be shifted into when shifting gears, so as to prevent the two gears with different speeds from directly meshing and causing damage to the teeth. Synchronizers generally include a spline hub, an adapter sleeve that engages with the outer spline of the spline hub, and two lock rings arranged on both sides of the spline hub. The adapter sleeve is the gear sleeve. After the gear sleeve is hobbed or shaped, It is also necessary to carry out finishing processing on the gear blank, that is, gear extrusion, which is processed by rolling and meshing the extrusion wheel and the gear sleeve in the same direction. The teeth of the synchronizer gear sleeve are inverted bevel t...

AI Technical Summary

Problems solved by technology

[0003] Existing tooth extrusion fixtures for synchronizer gear sleeves usually only include a positioning plate with a stepped inner circle. The positioning plate is connected to the machine tool through multiple bolts. Place a gear sleeve on the step of the inner circle of the positioning plate, and press the upper surface of the gear sleeve with the gland on the machine tool. During the gear extrusion process, the gear sleeve is positioned with the friction generated between the inner circle of the positioning plate. The disc rotates together, and the extrusion wheel rotates in the same direction and meshes with the tooth sleeve to extrude the gear. The gear extrusion fixture with this structure has the following problems: 1. Only one gear sleeve can be processed at a time, and the processing efficiency is low; 2. The positioning disc passes through multiple bolts It is inconvenient to install and disassemble when it is connected with the machine tool and needs to be replaced or repaired.

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