Forging forming method of triple gear and triple gear thereof and application

A triple gear and forging molding technology, applied in the field of gear forging, can solve the problems of large uncontrollable factors of oxide scale removal, poor tooth accuracy, manual grinding, etc., to simplify the manual descaling process, improve the milling efficiency, The effect of improving the pass rate

Active Publication Date: 2019-03-12
HANDE AXLE (ZHUZHOU) GEAR CO LTD
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Triple gear is a mechanical device widely used in the automotive industry to achieve axial connection and used for automobile axles. The top bevel gear part of the triple gear meshes with the planetary gear. The big end of the top bevel gear is closed and cannot be processed by gear planing. , in the process of processing, precision forging is generally used, but due to the oxidation in the forging process, the surface roughness of the top bevel tooth part is poor, and the precision of the tooth part is poor. Shot peening is performed to clean the scale, and then heated to about 800°C for warm forging. Due to the two heatings, the energy consumption is large, the production cycle is long, and the precision and roughness of the teeth are still difficult to achieve the ideal state.
However, the process of removing scale by steel brush and air blowing requires manual operation, and there are many uncontrollable factors in the removal of scale, and it is difficult to perform manual descaling in the forging process.
It is difficult ...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Forging forming method of triple gear and triple gear thereof and application
  • Forging forming method of triple gear and triple gear thereof and application
  • Forging forming method of triple gear and triple gear thereof and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The forging die used in the forging forming method of the triple gear is a combination die. Such as figure 2 As shown, the pre-forging die includes a rectangular pre-forging upper die sleeve 1a and a pre-forging lower die sleeve 1'a oppositely arranged, and the pre-forging upper die sleeve 1a and the pre-forging lower die sleeve 1'a are interference-fitted. Forging upper die 2a and pre-forging lower die 2'a, pre-forging upper die backing plate 3a and pre-forging lower die backing plate 3'a; respectively with pre-forging upper die backing plate 3a and pre-forging lower die backing plate 3'a Pre-forging upper ejector pin 4a and pre-forging lower ejector pin 4'a with loose fit, wherein, pre-forging upper die 2a includes pre-forging sleeve 1 21a with interference fit, pre-forging bevel tooth die 22a and pre-forging bevel tooth Mold core 23a.

[0047] The center of the pre-forging die is provided with a pre-forging upper ejector pin 4a, and the limit part-41a of the pre-f...

Embodiment 2

[0058] The forging forming method of the triple gear disclosed in this embodiment includes the following steps:

[0059] S1. Pretreatment process: the heated billet is subjected to an upsetting process, the upsetting ratio is 10% to 30%, and the upsetting ratio is selected as 20% in this embodiment; the upsetting surface is removed by high-pressure water skin; the water pressure in the pretreatment process is 10-30MPa, and the water pressure in this embodiment is 15MPa, and the time is less than 0.5S.

[0060] S2. Forging process: adopt the process of precision forging the top bevel teeth and bottom end teeth of the triple gear at the same time. Teeth are basically formed, such as image 3 , which pre-forges the bevel tooth part 5; the top bevel tooth of the basically formed pre-forging billet faces downward, puts it into the cavity of the final forging die, and is positioned with the basically formed bevel tooth part 5, and the bevel tooth part 5 and the bevel tooth part are...

Embodiment 3

[0066] The forging forming method of the triple gear disclosed in this embodiment includes the following steps:

[0067] S1. Pretreatment process: the heated billet is subjected to an upsetting process, the upsetting ratio is 10% to 30%, and the upsetting ratio is 30% in this embodiment; skin; the water pressure in the pretreatment process is 10-30MPa, and the water pressure in this embodiment is 30MPa, and the time is less than 0.5S.

[0068]S2. Forging process: adopt the process of precise forging of the top bevel teeth and bottom end teeth of the triple gear at the same time, place the upsetting and dephosphorized blank in the pre-forging mold cavity, and perform the pre-forging process to make the triple gear The top bevel teeth are basically formed, and the top bevel teeth of the basically formed pre-forged billet are put into the cavity of the final forging die, and the basic formed bevel teeth are positioned. After forging, a fully formed triple gear with bevel teeth an...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a forging forming method of a triple gear. A pre-treatment process and a forging process are adjusted and a forging mold is optimized, so that the procedure of repeated descaling in a forging process is reduced, and the percent of pass of the tooth surface roughness of the triple gear can be effectively improved; meanwhile, top conical teeth and bottom surface end teeth aresimultaneously forged and formed in the forging process, the stability of the structure of the triple gear is guaranteed, the material utilization rate is improved, and the time and the tool cost ofmilling machining the end teeth are saved, and the anti-fatigue strength of the end teeth is improved. The forging forming method of the triple gear enables the surface of a whole product to be uniform and consistent, the quality stability is improved, the technological steps are optimized, the production time is effectively shortened, the production efficiency is improved, and huge economic benefits are achieved; the triple gear manufactured by the forging forming method is high in quality stability, and the consistency of the surface roughness and the tooth surface precision after the forging are good; and large-scale batch production can be realized.

Description

technical field [0001] The present invention relates to the technical field of gear forging, in particular, more particularly, to a triple gear forging forming method, triple gear and application thereof. Background technique [0002] Triple gear is a mechanical device widely used in the automotive industry to achieve axial connection and used for automobile axles. The top bevel gear part of the triple gear meshes with the planetary gear. The big end of the top bevel gear is closed and cannot be processed by gear planing. , in the process of processing, precision forging is generally used, but due to the oxidation in the forging process, the surface roughness of the top bevel tooth part is poor, and the precision of the tooth part is poor. Shot peening is performed to clean the scale, and then heated to about 800°C for warm forging. Due to the two heatings, energy consumption is large, the production cycle is long, and the precision and roughness of the teeth are still diffi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B21K1/30B21J13/02
CPCB21J13/02B21K1/30
Inventor 何熙时余小军周激波宣昊丰朱伟强汪顺
Owner HANDE AXLE (ZHUZHOU) GEAR CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap