Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Gear

A gear and tooth surface technology applied to gears. field, it can solve the problems of limited gear volume, short service life of amorphous alloys, and high cost of amorphous alloys, and achieve the effect of avoiding machining and improving hardness

Active Publication Date: 2012-07-11
BYD CO LTD
View PDF7 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although, Zhang Zhihao and Cheng Ming et al [Journal of Mechanical Engineering, Vol41, NO3, P151; Aerospace Manufacturing Technology, August 2006 No. 4, P4] used the characteristics of superplastic forming of amorphous alloys to solve the near-end problem of precision gears. Forming problems, but the service life of the amorphous alloy used is short, the cost of using the amorphous alloy is high, and the gear volume is limited, which limits the application of the amorphous alloy in the gear

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
  • Gear
  • Gear
  • Gear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] First, the non-tooth surface part was prepared using No. 45 steel. Specifically, blanking, punching, machining, and quenching and tempering are performed in sequence to obtain figure 1 The non-tooth flank portion 12 in the gear shown in .

[0051] Then, put the prepared non-tooth surface part into the die-casting mold and perform positioning.

[0052] Next, the amorphous alloy Zr 52 Al 10 Cu 30 Ni 7 Heating to above the melting point, the superheat is 200 degrees Celsius, and an inert gas protection is carried out, and then the Zr 52 Al 10 Cu 30 Ni 7 A melt is injected into the above mold so as to coat the tooth surface portion 11 formed of an amorphous alloy on the outside of the non-tooth surface portion 12 .

[0053] Finally, the casting is taken out, the nozzle and burrs are removed, and the tooth shape is finely ground to obtain the gear of the embodiment of the present invention.

Embodiment 2

[0055] Except that the amorphous alloy material used is Fe 41 co 7 Cr 15 Mo 14 C 15 B 6 Y 2 (containing 2at% impurity elements), other gears were prepared in the same manner as in Example 1.

Embodiment 3

[0057] amorphous alloy Zr 52 Al 10 Cu 30 Ni 7 Heating to above the melting point, the superheat is 200 degrees Celsius, and an inert gas protection is carried out, and then the Zr 52 Al 10 Cu 30 Ni 7 The melt is injected into a die-casting mold to form a gear made entirely of amorphous alloy.

[0058] Finally, the casting is taken out, the nozzle and burrs are removed, and then the tooth shape is finely ground to obtain the gear of the embodiment of the present invention.

[0059] In addition, for comparison, the above-mentioned gears were also prepared according to the following method using conventional materials, conventional processes and techniques not of the present invention.

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 gear which comprises a gear surface part and a non-gear surface part, wherein at least the gear surface part is made of amorphous alloy, also the vikers hardness value of the amorphous alloy is greater than 4.5GPa, and the elastic strain limit is greater than 0.5%. Therefore, the gear is divided into different parts by the inventor of the invention, at least the gear surface part (namely the part bearing friction and strain load mainly) is prepared by utilizing the specific amorphous alloy, the service life of the gear is prolonged, and the manufacturing cost of the gear is lowered.

Description

technical field [0001] The invention relates to the field of amorphous technology, in particular to a gear. Background technique [0002] In modern machines, gear transmission is the most common mechanical transmission. It is a form of transmitting machine power and motion. Gears have become an indispensable transmission component in mechanical products and an important basic component of mechanical products. In the automobile industry, gears are the main basic transmission components of automobiles, and the quality of gears directly affects the noise, stability and service life of automobiles. [0003] Conventional gears are usually made of steel. During the preparation process, the soft steel needs to be processed and formed. After forming, the tooth surface needs to be hardened to improve wear resistance and prolong service life. Quenching and tempering heat treatment and nitriding and carburizing are usually used. surface hardening at the cost of sacrificing the precisi...

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): F16H55/17F16H55/06C22C45/00C22C45/02C22C45/10C22C45/04
Inventor 宫清张法亮李运春
Owner BYD CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com