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Forging and normalizing process for synchronizer tooth holder with double-sided oil grooves

A technology of synchronizer and oil groove, which is applied in the field of forging and normalizing technology of the gear seat of the synchronizer with double-sided oil groove, which can solve the problems of subsequent fine turning and high-speed gear shaping that cannot be carried out normally, and large hardness dispersion, so as to reduce Effects of labor cost, improved cooling and lubrication, and increased productivity

Inactive Publication Date: 2021-02-02
十堰同创精密机械有限公司
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Problems solved by technology

[0005] The normalizing process of F45MnV material usually adopts mesh belt furnace for normalizing. Due to the influence of material fluctuations in steel mills, the hardness dispersion after normalizing is too large. Between HB190-245, hard is hard and soft is soft. High-speed gear shaping cannot be performed normally, so the normalizing process needs to be adjusted repeatedly for each batch of production

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  • Forging and normalizing process for synchronizer tooth holder with double-sided oil grooves

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Embodiment Construction

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings, but this embodiment should not be construed as limiting the present invention.

[0023] The present invention as figure 1 Shown:

[0024] A forging and normalizing process for a tooth seat of a synchronizer with double-sided oil grooves,

[0025] (1) In order to realize the forging of the gear seat of the synchronizer with double-sided oil grooves, a forging die is adopted. The structure of the forging die is: including an upper die plate 1 and a lower die plate 2, wherein:

[0026] The upper part of the upper template 1 is fixed with a moving spindle 3 of the forging press, and a mold cavity is arranged on the lower end surface of the upper template 1. In the middle of the mold cavity, a perforating punch 4 extending downward is fixed. The outer peripheral surface of the perforating punch is from inside to outside. The forming ...

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Abstract

The invention discloses a forging and normalizing process for a synchronizer tooth holder with double-sided oil grooves. The forging and normalizing process comprises a process of directly forging thedouble-sided oil grooves in a forging process, improvement of mold cooling and improvement of a normalizing process, wherein the double-sided oil grooves are directly forged by improving a mold in the forging process. A water channel is reserved in the mold, so that graphite and water can fully pass through a mold cavity, and the cooling and lubricating effects of the mold are enhanced. Accordingto a novel process for normalizing a 45MnV material by adopting a pusher furnace, the problems that the difference in normalizing result of the 45MnV material by using a mesh belt furnace is too large and the metallographic phase is also unstable are solved. By changing the technological process and changing the mold structure, obvious economic benefits are obtained, the production efficiency isgreatly improved, and the labor cost is reduced.

Description

technical field [0001] The invention specifically relates to a forging and normalizing process of a gear seat of a synchronizer with double-sided oil grooves. Background technique [0002] As one of the core parts of the gearbox synchronizer, the synchronizer gear holder has a relatively complicated structure and a relatively complex and changeable forging process. In order to improve economic benefits, it is often necessary to directly forge the oil groove, which increases the difficulty of forging this type of gear seat. [0003] In the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art: [0004] In the existing production process of the synchronizer tooth seat with oil groove, the oil groove is generally not forged in forging, but the oil groove is milled out with a milling machine in the subsequent process; or the oil groove is forged on one side (usually on the upper surface) when forging the b...

Claims

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Application Information

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IPC IPC(8): B21K1/76C21D1/28C21D8/00C21D9/00
CPCB21K1/76C21D1/28C21D8/005C21D9/0068
Inventor 薛万林陈翔周波孔卫朱军
Owner 十堰同创精密机械有限公司
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