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Processing technology for rear axle drive bevel gear

A technology of active bevel gear and processing technology, which is applied in the field of vehicles, can solve the problems of affecting the service life of the active bevel gear of the rear axle, low precision, coarse grain, etc., to reduce hardness, high precision, and improve the metallographic structure of the core Effect

Active Publication Date: 2013-09-11
重庆市綦江区华丰变速箱有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional rear axle active bevel gear processing process is as follows: material selection - forging blank - normalizing - rough turning - finishing turning - thread rolling - shredding - rough cutting - fine cutting - chamfering - knurling - quenching - back Fire—Shot Peening—Straightening—Threading—Annealing—Finish Grinding Outer Circle—Rough Matching—Grinding—Fine Matching—Cleaning; the above processing techniques can obtain good quality products to a certain extent, but the existing processing techniques There are defects such as too coarse grains inside the product, large deformation after heat treatment, and low precision, which greatly affects the service life of the rear axle driving bevel gear

Method used

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  • Processing technology for rear axle drive bevel gear

Examples

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Effect test

Embodiment 1

[0034] Example 1: Please see figure 1 : The processing technology of a rear axle driving bevel gear shown includes the following steps:

[0035] (1) Selection of materials, selection of low-carbon alloy steel bars that meet the size;

[0036] (2) Forging blanks, heating the material selected in step (1) to 850°C, and then placing them in a forging die for forging, so as to obtain blanks of conforming size;

[0037] (3) Normalizing, put the blank into a heating furnace and heat it to Ac3+30℃, after holding for 30 minutes, take the blank from the furnace and cool it in air;

[0038] (4) Turning, the normalized blank is fixed on a lathe for turning processing to make it fit the size of the columnar structure. Turning is divided into rough turning and fine turning. The blank is first roughed and then refined. Car processing.

[0039] (5) Gear cutting: Fix the blank obtained in step (4) to the gear cutting machine for gear cutting. The gear cutting is divided into rough cutting and fine cu...

Embodiment 2

[0058] Example 2: Please refer to figure 1 : The processing technology of a rear axle driving bevel gear shown includes the following steps:

[0059] (1) Selection of materials, selection of low-carbon alloy steel bars that meet the size;

[0060] (2) Forging blanks, heating the material selected in step (1) to 1000°C, and then placing them in a forging die for forging, so as to obtain blanks of conforming size;

[0061] (3) Normalizing, put the blank into a heating furnace to heat to Ac3+40℃, after holding for 30 minutes, take the blank out of the furnace and cool it in air;

[0062] (4) Turning, the normalized blank is fixed on a lathe for turning processing to make it fit the size of the columnar structure. Turning is divided into rough turning and fine turning. The blank is first roughed and then refined. Car processing.

[0063] (5) Gear cutting: Fix the blank obtained in step (4) to the gear cutting machine for gear cutting. The gear cutting is divided into rough cutting and fin...

Embodiment 3

[0082] Example 3: See figure 1 : The processing technology of a rear axle driving bevel gear shown includes the following steps:

[0083] (1) Selection of materials, selection of low-carbon alloy steel bars that meet the size;

[0084] (2) Forging blanks, heating the material selected in step (1) to 1200°C, and then placing them in a forging die for forging, so as to obtain blanks of conforming size;

[0085] (3) Normalizing, put the blank into a heating furnace and heat it to Ac3+50°C, after holding for 30 minutes, take the blank out of the furnace and cool it in air;

[0086] (4) Turning, the normalized blank is fixed on a lathe for turning processing to make it fit the size of the columnar structure. Turning is divided into rough turning and fine turning. The blank is first roughed and then refined. Car processing.

[0087] (5) Gear cutting: Fix the blank obtained in step (4) to the gear cutting machine for gear cutting. The gear cutting is divided into rough cutting and fine cutti...

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Abstract

The invention discloses a processing technology for a rear axle drive bevel gear which is characterized by including steps of selecting raw materials, forging a blank, normalizing, turning, cutting a gear, chamfering, rolling a spline, carburizing and quenching, tempering, blasting shots, straightening, annealing, finely turning an outer circle, threading, milling a locking groove, cleaning a thread, finely grinding an outer circle, roughly matching, shaving the gear, finely matching and rinsing, and obtaining a finished product after rinsing the a workpiece. By the processing technology, machining precision of threads of the rear axle drive bevel gear is improved and reaches a grade of H6; quenching to harden the carbon layer is totally omitted through machining after heat treatment; hardness of a product surface and a core is reduced after annealing, internal pressure of the gear is eliminated, and a metallographic structure of the core of the gear is improved; the processing technology for the gear axle drive bevel gear is high in precision, and requirements of assembling is favorably achieved; service life of the gear axle drive bevel gear is prolonged.

Description

Technical field [0001] The invention relates to the technical field of vehicles, in particular to a processing technology of a rear axle driving bevel gear. Background technique [0002] The traditional rear axle driving bevel gear processing technology is as follows: material selection-forging blanks-normalizing-rough turning-fine turning-rolling-threading-rough cutting-fine cutting-chamfering-knurled key-quenching-back Fire—shot blasting—straightening—threading—annealing—finishing outer circle—coarse matching—grinding teeth—fine matching—cleaning; the above processing technology can get good quality products to a certain extent, but the existing processing technology There are deficiencies such as excessively coarse grains inside the product, large deformation after heat treatment, and low accuracy, which greatly affects the service life of the driving bevel gear of the rear axle. Summary of the invention [0003] The technical problem to be solved by the present invention is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14
Inventor 熊利祥刘洪
Owner 重庆市綦江区华丰变速箱有限公司
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