Bevel gear based on conjugate curves and meshing pair thereof

A technology of conjugate curves and bevel gears, which is applied to gear transmissions, belts/chains/gears, components with teeth, etc., and can solve problems such as broken teeth, low load-carrying capacity of gears, and affecting reliability of gear transmission.

Active Publication Date: 2013-05-01
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The contact characteristics between the meshing gear pairs have a great influence on the load-carrying capacity and life of the gear system. For example, local stress concentration on the tooth surface and edge contact will lead to early failure phenomena such as pitting or spalling of the gears, and in severe cases, the teeth will be broken. , which in turn makes the entire transmission system paralyzed, seriously affecting the reliability of gear transmission
Although there have been relevant researches using methods such as tooth profile modification, manufacturing and processing, and transmission characteristic analysis to improve the problems of low gear load capacity, large transmission error, and short service life, in order to improve the contact load capacity and reliability of gear pairs, but still Can not fundamentally solve the transmission shortcomings of this type of transmission pair

Method used

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  • Bevel gear based on conjugate curves and meshing pair thereof
  • Bevel gear based on conjugate curves and meshing pair thereof
  • Bevel gear based on conjugate curves and meshing pair thereof

Examples

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Effect test

no. 1 example

[0070] Such as figure 1 As shown, it is a structural schematic diagram of the first embodiment of the bevel gear meshing pair based on the conjugate curve of the present invention. This embodiment is based on the bevel gear meshing pair of conjugate curves, including bevel gear I and bevel gear II that mesh with each other and whose tooth profile curves are all circular arcs, and the shaft angle between bevel gear I and bevel gear II is 0°< ∑≦90°, the angle of intersection between the axes of the bevel gear I and the bevel gear II in this embodiment is 10°, and the axis of the bevel gear I and the axis of the bevel gear II in this embodiment intersect in a plane.

[0071] Further, there is a point contact mesh between the bevel gear I and the bevel gear II, and the tooth profile surface of the bevel gear I 1 The contact curve Γ formed by the meshing points 1 With the tooth profile surface of bevel gear II ∑ 2 The contact curve Γ formed by the meshing points 2 is a conjugat...

no. 2 example

[0106] Such as Figure 7 As shown, it is a structural schematic diagram of the second embodiment of the bevel gear meshing pair based on the conjugate curve of the present invention. The bevel gear meshing pair based on conjugate curves in this embodiment includes bevel gear I and bevel gear II that mesh with each other and whose tooth profile curves are all circular arcs, and the shaft angle between bevel gear I and bevel gear II is 0° <∑≤90°, the angle of intersection between the axes of the bevel gear I and the bevel gear II in this embodiment is 90°, and the axis of the bevel gear I and the axis of the bevel gear II in this embodiment intersect in a plane.

[0107] Further, there is a point contact mesh between the bevel gear I and the bevel gear II, and the tooth profile surface of the bevel gear I 1 The contact curve Γ formed by the meshing points 1 With the tooth profile surface of bevel gear II ∑ 2 The contact curve Γ formed by the meshing points 2 is a conjugate c...

no. 3 example

[0131] Such as Figure 8 As shown, it is a structural schematic diagram of the third embodiment of the bevel gear meshing pair based on the conjugate curve of the present invention. This embodiment is based on the bevel gear meshing pair of conjugate curves, including bevel gear I and bevel gear II that mesh with each other and whose tooth profile curves are all circular arcs, and the shaft angle between bevel gear I and bevel gear II is 0°< Σ≤90°, and the axis of bevel gear I and the axis of bevel gear II in this embodiment are staggered in space.

[0132] Further, there is a point contact mesh between the bevel gear I and the bevel gear II, and the tooth profile surface of the bevel gear I 1 The contact curve Γ formed by the meshing points 1 With the tooth profile surface of bevel gear II ∑ 2 The contact curve Γ formed by the meshing points 2 is a conjugate curve. Preferably, the contact curve Γ 1 with contact curve Γ 2 All are smooth curves to ensure the smooth meshi...

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PUM

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Abstract

The invention discloses a bevel gear based on conjugate curves and a meshing pair thereof. The meshing pair comprises a bevel gear I and a bevel gear II which are mutually in point meshing and have arc tooth profile curves, and a contact curve gamma1 consisting of meshing points on the tooth profile curve of the bevel gear I and a contact curve gamma2 consisting of meshing points on the tooth profile curve of the bevel gear II are conjugate curves. According to the bevel gear transmission meshing pair based on the conjugate curves, the tooth profile curves of the mutually meshed bevel gear I and bevel gear II are respectively in an arc shape, the meshed tooth surfaces of the bevel gear I and the bevel gear II move along the conjugate curves, the meshing characteristics of the contact curves are succeeded, and the meshing of the contact curves between the tooth surfaces is high in contact strength; a contact transmission process is close to pure rolling along an axial direction, and the transmission efficiency is high; the tooth surfaces are easy to process and manufacture, transmission errors are small, and the service life is long; under the conditions of equivalent transmission ratio and center distance, the selection and determination of a small tooth number and a large modulus can be realized; and the transmission requirements of high speed, heavy load, large power and high efficiency can be met.

Description

technical field [0001] The invention belongs to the technical field of gear transmission, in particular to a bevel gear based on a conjugate curve and its meshing pair. Background technique [0002] Gear transmission is one of the main forms of mechanical transmission. Because of its advantages such as large speed ratio range, wide power range, compact and reliable structure, etc., it has been widely used in various mechanical equipment and instruments, and has become the most popular in existing mechanical products. The transmission with the largest proportion. [0003] At present, bevel gear transmission at home and abroad mainly has two transmission forms: intersecting shaft transmission and cross shaft transmission, and most of them use involute thickened gear pairs as the research basis to realize power transmission. The contact characteristics between the meshing gear pairs have a great influence on the load-carrying capacity and life of the gear system. For example, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/17F16H55/08F16H1/14
Inventor 陈兵奎梁栋谭儒龙彭帅高艳娥樊毅啬张强
Owner CHONGQING UNIV
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