Automobile automatic gearbox gear sleeve and manufacturing technology thereof

A technology for automatic transmissions and automobiles, applied to vehicle parts, transportation and packaging, etc., can solve the problems of low material utilization rate, long production cycle, high processing cost, etc., achieve high material utilization rate, improve tooth surface strength, and meet the supporting requirements required effect

Inactive Publication Date: 2018-06-15
江苏威鹰机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Synchronizer gear sleeves are widely used in mechanical shifting gearboxes of automobiles. Its main function is to make the driver's gear shifting easy and smooth, and greatly improve the performance of the transmission. The performance and processing accuracy are very high. The existing manufacturing process generally adopts seamless steel pipe cutting and hobbing to form the tooth surface. High cost; poor tooth surface compactness, poor mechanical properties, easy tooth damage during work, difficult to meet the quality requirements of new energy vehicle components

Method used

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  • Automobile automatic gearbox gear sleeve and manufacturing technology thereof
  • Automobile automatic gearbox gear sleeve and manufacturing technology thereof
  • Automobile automatic gearbox gear sleeve and manufacturing technology thereof

Examples

Experimental program
Comparison scheme
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Embodiment

[0017] Example: see figure 1 , figure 2 with image 3 As shown, a gear sleeve for an automatic gearbox for automobiles includes a hollow cylindrical body, the outer wall of the hollow cylindrical body is three large, medium, and small cylindrical sections 1, 2, and 3 with successively decreasing outer diameters. There are six rectangular-shaped teeth 4 evenly distributed on the wall of the small cylindrical section 3, and the roots of the rectangular-shaped teeth 4 are provided with axial grooves 7. The hollow cylindrical body is an integral structure, and the material is forged from 40Cr. form; between the large cylindrical section 1 and the middle cylindrical section 2, an annular groove 15 is provided, and the tooth profile on the wall of the small cylindrical section 3 is provided with an annular groove 26, and the described annular groove 15 and Annular groove 2 6 is formed by cutting.

[0018] see Figure 4 As shown, the manufacturing process includes the following ...

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PUM

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Abstract

The invention discloses an automobile automatic gearbox gear sleeve and a manufacturing technology thereof. The automobile automatic gearbox gear sleeve comprises a hollow cylindrical body, and the outer wall of the hollow cylindrical body is provided with a large cylindrical section, a medium cylindrical section and a small cylindrical section which are sequentially decreased progressively in outer diameter. The wall of the small cylindrical section is provided with a gear profile. The hollow cylindrical body is formed by forging of a whole structure, a warm-and-cold combined forging method is adopted, an outer gear is formed through cold forging extruding, the production period is short, the material utilizing rate is high, the machining cost is low, the metal flow line is not cut off, the grain structure is compact, the gear surface strength is improved, the mechanical property is high, and the matching requirement of parts of new energy automobiles can be met.

Description

technical field [0001] The invention relates to an automobile gearbox, in particular to a production process for a gear sleeve of an automatic gearbox for a new energy automobile. Background technique [0002] Synchronizer gear sleeves are widely used in mechanical shifting gearboxes of automobiles. Its main function is to make the driver's gear shifting easy and smooth, and greatly improve the performance of the transmission. The performance and processing accuracy are very high. The existing manufacturing process generally adopts seamless steel pipe cutting and hobbing to form the tooth surface. The cost is high; the density of the tooth surface is not good, the mechanical properties are poor, and the teeth are easily damaged during the working process, which makes it difficult to meet the quality requirements of new energy vehicle parts. Contents of the invention [0003] The invention provides a warm-cold combined forging method, which has short production cycle, high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00B23P2700/50
Inventor 张太良
Owner 江苏威鹰机械有限公司
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