Triple-gear process of one-time heating continuous forging precision forming through bridge

A triple gear, precision forming technology, applied in the direction of manufacturing tools, metal processing equipment, wheels, etc., can solve the problems of gear pitting, short service life, high production cost, etc., to improve the surface structure of refined grains, improve the structure structure Guarantee, good effect of precision forging forming quality

Inactive Publication Date: 2019-02-19
QINGDAO THREE STAR PRECISION FORGING GEAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the design structure of domestic heavy truck bridges adopts triple gear transmission in the middle bridge. The traditional process has the disadvantages of complicated procedures, time-consuming and laborious, high scrap rate, low production efficiency, poor precision, low strength, and high production costs, especially for gear forging. The final

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  • Triple-gear process of one-time heating continuous forging precision forming through bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The process of one-time heating continuous forging precision forming through-bridge triple gear of the present invention is special in that it includes the following process steps in sequence:

[0032] (1) Forging blank heating

[0033] The forging blank is heated to the pre-forging temperature of 1050°C in the intermediate frequency furnace;

[0034] (2) rough forging

[0035] Using the screw press forging equipment, put the aforementioned forging blank into the forming die cavity, and carry out rough forging. The outline size of the rough forging should be close to the outline dimension of the final forging, so as to facilitate the forging and forming of the subsequent bevel tooth profile;

[0036] (3) Rough forging of bevel teeth

[0037] Using the screw press forging equipment, the aforementioned rough forging is put into the bevel tooth forming die cavity, and the bevel tooth shape is rough forged to form a rough forging with the bevel tooth shape;

[0038] (4) ...

Embodiment 2

[0045] The process of one-time heating continuous forging precision forming through-bridge triple gear of the present invention is special in that it includes the following process steps in sequence:

[0046] (1) Forging blank heating

[0047] The forging blank is heated to the pre-forging temperature of 1060°C in the intermediate frequency furnace;

[0048] (2) rough forging

[0049] Using the screw press forging equipment, put the aforementioned forging blank into the forming die cavity, and carry out rough forging. The outline size of the rough forging should be close to the outline dimension of the final forging, so as to facilitate the forging and forming of the subsequent bevel tooth profile;

[0050] (3) Rough forging of bevel teeth

[0051] Using the screw press forging equipment, the aforementioned rough forging is put into the bevel tooth forming die cavity, and the bevel tooth shape is rough forged to form a rough forging with the bevel tooth shape;

[0052] (4) Ul...

Embodiment 3

[0059] The process of one-time heating continuous forging precision forming through-bridge triple gear of the present invention is special in that it includes the following process steps in sequence:

[0060] (1) Forging blank heating

[0061] The forging blank is heated to the pre-forging temperature of 1040°C in the intermediate frequency furnace;

[0062] (2) rough forging

[0063] Using the screw press forging equipment, put the aforementioned forging blank into the forming die cavity, and carry out rough forging. The outline size of the rough forging should be close to the outline dimension of the final forging, so as to facilitate the forging and forming of the subsequent bevel tooth profile;

[0064] (3) Rough forging of bevel teeth

[0065] Using the screw press forging equipment, the aforementioned rough forging is put into the bevel tooth forming die cavity, and the bevel tooth shape is rough forged to form a rough forging with the bevel tooth shape;

[0066] (4) ...

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Abstract

The invention relates to a triple-gear process of a one-time heating continuous forging precision forming through bridge. The triple-gear process is characterized by comprising the following processing steps in sequence: (1) heating forging blanks: heating the forging blanks to the pre-forging temperature of 1040 DEG C to 1060 DEG C in an intermediate frequency furnace; (2) performing rough forging and forming; (3) performing rough forging and forming tapered teeth; (4) removing surface scale from forgings with superhigh-pressure water; (5) performing finish forging and forming: performing finish forging and forming the shapes of the tapered teeth so as to prepare finish forgings, wherein no machining is needed in the next step; and (6) isolating the surfaces of the finish forgings from air, and performing anti-oxidation treatment: covering the surfaces of the finish forgings with silver sand, and isolating the surfaces of the finish forgings from outside air, so that the finish forgings are prevented from being oxidized. The triple-gear process has the advantages of one-time heating, water recycling, water conservation, scale removal, good wear resistance, good finish forging andforming quality of the shapes of the tapered teeth, air oxidation resistance of forgings, good forging forming quality, high precision, high production efficiency, material saving, low production cost, energy conservation and long service life. The triple-gear process can be widely applied to wheeled vehicles.

Description

technical field [0001] The invention relates to a process of one-time heating continuous forging precision forming through-bridge triple gear, which can be widely used in wheeled vehicles. Background technique [0002] At present, the design structure of domestic heavy truck bridges adopts triple gear transmission in the middle bridge. The traditional process has the disadvantages of complicated procedures, time-consuming and laborious, high scrap rate, low production efficiency, poor precision, low strength, and high production costs, especially for gear forging. The final oxidation problem is serious, and the post-processing will increase a lot of costs, and even cause a large batch of defective products, and the performance of the product will also be reduced. Because the forging process cannot effectively control the oxidation of the bevel tooth part, it will be damaged during work. The gear will cause pitting and the service life will be short. Contents of the inventi...

Claims

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Application Information

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IPC IPC(8): B21J5/00B21J13/00B21K1/30B08B3/02
Inventor 傅志刚祝新亭鲍清尚李晓亮徐金花
Owner QINGDAO THREE STAR PRECISION FORGING GEAR
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