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

A Design Calculation Method for Reverse Involute Gear Transmission Mesh

An involute gear, design and calculation technology, applied to components with teeth, belts/chains/gears, mechanical equipment, etc., can solve problems such as low reliability, short service life of gears, large contact stress at contact points, etc., to achieve The effect of reducing difficulty, relaxing error, and improving carrying capacity

Active Publication Date: 2021-09-21
重庆模源齿轮有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The involute gear is a convex tooth profile composed of two symmetrical involutes. During the transmission process, the tooth profile is in convex-convex contact. According to the Hertz (H.Hertz) spherical contact stress theory, the convex-convex contact is elastic deformation and stress concentration At the contact point, it is distributed from large to small with the deformation area, and the contact stress at the contact point is large. In high power and high power transmission, the gear is often damaged by pitting corrosion, so the gear life is short, the reliability is low, and the transmission mechanism high maintenance cost

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
  • A Design Calculation Method for Reverse Involute Gear Transmission Mesh
  • A Design Calculation Method for Reverse Involute Gear Transmission Mesh
  • A Design Calculation Method for Reverse Involute Gear Transmission Mesh

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0474] Embodiment 1: large transmission ratio gear transmission calculation, such as Figure 15 and Figure 16 shown

[0475] The first gear of 6T53 automobile gearbox adopts the improved design of dotted line gear. Transmission input torque 1516Nm (output torque 7200Nm), installation center distance a=123, required transmission ratio i=4.5~5, material selection 20CrMnTi carburizing and quenching, material characteristic coefficient ΔE=8.84×10-6 characteristic system, allowable bending stress [σ] F =420Mpa, allowable contact stress [σ] H =730Mpa, the other parameters are selected according to the standard. According to the calculation, actually determine the pinion z 1 =8, large gear z 2 =38, modulus m n =5.75, pressure angle α n =22.5°, helix angle β=7°. See Table 1-1 for specific calculations.

[0476] Table 1-1 Point-line gear transmission design calculation table

[0477]

[0478]

[0479]

[0480]

[0481]

[0482] Table 1-2 Gear parameter table ...

Embodiment 2

[0489] Embodiment 2: the gear transmission calculation (as Figure 17 shown)

[0490] Steyr drive axle cylindrical gear, center distance a=193, transmission ratio i=1, modulus m determined according to transmission output torque n =5.25, pressure angle αn=20°, number of gear teeth z 1 =z 2 =35, helix angle β=15°. Adopt point line gear to improve design, calculate and determine modulus m n =6.5, pressure angle α n =22.5°, helix angle β=15°, number of gear teeth z 1 =z 2 =31, the tooth width 36 remains unchanged. The calculation process is shown in Table 2-1.

[0491]Table 2-1 Calculation table for gear transmission design with the same number of teeth (i=1)

[0492]

[0493]

[0494]

[0495]

[0496]

[0497]

[0498] Table 2-2 Gear parameter table (dotted line gear i=1)

[0499]

[0500] Table 2-3 Gear parameter list

[0501]

[0502]

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 design calculation method of reverse involute gear transmission meshing. The design calculation method includes the following steps: modeling with a gear base circle as a benchmark, establishing a reverse involute functional relationship; and deriving relevant meshing Equation; confirm the value of the displacement coefficient of the reverse involute gear; calculate the reverse involute transmission parameters; check the calculated transmission parameters; check the gear processing quality. Designing the meshing trajectory of the reverse involute tooth profile on the involute gear can improve the bearing capacity of the main working surface. Because the elastic deformation is considered in the design, and the elastic deformation is used to correct the force deformation of the gear, and at the same time It also meets the requirements of the elastic conjugate tooth profile curve, and can also relax the error of gear manufacturing when appropriate, and reduce the difficulty of gear manufacturing to meet the precision requirements.

Description

technical field [0001] The invention relates to the field of gear manufacturing, in particular to a design calculation method for reverse involute gear transmission meshing. Background technique [0002] The involute gear is an outer convex tooth profile composed of two symmetrical involutes. During the transmission process, the tooth profile is in convex-convex contact. According to the theory of Hertz (H.Hertz) spherical contact stress, the convex-convex contact is elastic deformation and stress concentration At the contact point, it is distributed from large to small with the deformation area, and the contact stress at the contact point is large. In the high power and high power transmission, the gear is mostly damaged by pitting corrosion, so the gear life is short, the reliability is low, and the transmission mechanism Maintenance costs are high. There are two forms of gear transmission: space crossing and plane. Involute cylindrical gears are generally plane transmiss...

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): F16H55/08G06F30/17
Inventor 谭富春
Owner 重庆模源齿轮有限公司
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