Supercharge Your Innovation With Domain-Expert AI Agents!

gear

A gear and tooth surface technology applied to gears. It can solve the problems of limited gear volume, short service life of amorphous alloys, and high use costs of amorphous alloys, so as to avoid machining and improve hardness.

Active Publication Date: 2016-09-07
BYD CO LTD
View PDF7 Cites 0 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, use 45-gauge steel to prepare the non-tooth surface portion. Specifically, blanking, punching, machining, and quenching and tempering are sequentially performed to obtain figure 1 The non-toothed portion 12 in the gear shown in .

[0051] Then, the prepared non-tooth surface portion is placed in a die-casting mold and positioned.

[0052] Next, the amorphous alloy Zr 52 Al 10 Cu 30 Ni 7 Heated to above the melting point, the superheat is 200 degrees Celsius, and protected by inert gas, and then Zr 52 Al 10 Cu 30 Ni 7 The melt is injected into the above-mentioned mold, thereby coating the tooth surface portion 11 formed of the amorphous alloy on the outside of the non-tooth surface portion 12 .

[0053] Finally, the casting is taken out, the nozzle and the 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 The gears were prepared in the same manner as in Example 1 except for (containing 2 at% of impurity elements).

Embodiment 3

[0057] The amorphous alloy Zr 52 Al 10 Cu 30 Ni 7 Heated to above the melting point, the superheat is 200 degrees Celsius, and protected by inert gas, and then Zr 52 Al 10 Cu 30 Ni 7 The melt is injected into a die-casting mold to form gears made entirely of amorphous alloys.

[0058] Finally, the casting is taken out, the nozzle and the 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 other than 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

PropertyMeasurementUnit
Vickers hardnessaaaaaaaaaa
Vickers hardnessaaaaaaaaaa
Vickers hardnessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a gear, comprising a tooth surface portion and a non-tooth surface portion, wherein at least the tooth surface portion is made of an amorphous alloy, and the Vickers hardness value of the amorphous alloy is greater than 4.5GPa, and the elastic strain limit is greater than 0.5 %. Thus, the inventors of the present application have improved the service life of the gear by dividing the gear into different parts, utilizing a specific amorphous alloy to prepare at least the tooth surface part of the gear (that is, the part mainly bearing friction and stress loads), and Reduce the manufacturing cost of gears.

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 type of mechanical transmission. It is a form of transmitting machine power and motion. In mechanical products, gears have become an indispensable transmission component 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 steel needs to be processed and formed in a soft state. After forming, the tooth surface needs to be hardened to improve the wear resistance and prolong the service life. Usually, quenching and tempering heat treatment and nitriding and carburizing are used. Equal surface hardening tre...

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
Patent Type & Authority Patents(China)
IPC IPC(8): F16H55/17F16H55/06C22C45/00C22C45/02C22C45/10C22C45/04
Inventor 宫清张法亮李运春
Owner BYD CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com