Tangential modified gear

A technology of shifting gears and gears, which is applied to belts/chains/gears, components with teeth, portable lifting devices, etc. The effect of avoiding excessive noise band width and reducing noise

Active Publication Date: 2015-05-20
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a tangential displacement gear that is easy to process and has low meshing noise to solve the problem of difficult processing of variable tooth thickness gears in the prior art and the large meshing noise of the variable tooth thickness gears in the prior art
The tangential shifting gear is formed by stacking plates. Since the thickness of a single tooth plate is small, it is easy to meet the processing requirements. The gear processing technology is good, and the hard tooth surface and high-precision variable tooth thickness gear processing can be completed with a simple process. , which solves the problem of difficult processing of variable tooth thickness gears in the prior art, and can improve the bearing capacity and running accuracy of the transmission device

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0028] exist figure 1 figure 2 In the shown embodiment 1, a tangential displacement gear is composed of 11 gears with the same number of teeth and thickened tooth shapes, which are sequentially stacked. The outer gear 1 at the end and the 9 inner gears 2 between the two outer gears (see image 3 ), the thickness of all the inner gears is equal, the thickness of the outer gears is 4 times the thickness of the inner gears, and the vibration and noise reduction plates 3 are embedded between the adjacent gears, the basic structure of the vibration and noise reduction plates It is compatible with the tooth plate, and the thickness of all the vibration and noise reduction plates is equal and glued to the adjacent tooth plate. The thickness of the vibration and noise reduction plate is 30% of the thickness of the internal tooth plate. Shaft hole 4, around the shaft hole is provided with a number of fixing holes 5 for fixing the tooth piece, the diameter of the addendum circle and ...

Embodiment 2

[0030] The gear in Example 2 is a helical gear, and the thickness of the 7 internal tooth plates in the gear is equal, and the 8 vibration and noise reduction plates are glued to the adjacent tooth plates. The thickness of the vibration and noise reduction sheet is greater than the thickness of the vibration and noise reduction sheet on the side of the inner gear with a smaller tooth thickness. The thickness of the vibration and noise reduction sheet changes linearly along the gear axis. The minimum thickness of the vibration and noise reduction sheet It is 15% of the thickness of the inner gear, the maximum thickness of the vibration and noise reduction plate is 30% of the thickness of the inner gear, the thickness of the outer gear is equal and its thickness is 3 times the thickness of the inner gear, and the rest are the same as in Example 1 .

Embodiment 3

[0032] In embodiment 3, the gear includes 8 internal tooth plates and 9 vibration-damping and noise-reducing plates. The internal tooth plates have different thicknesses, and the thickness of the internal tooth plate with smaller tooth thickness is greater than that of the internal tooth plate with larger tooth thickness. Thickness, the thickness of the maximum thickness internal gear is 1.8 times the thickness of the minimum thickness internal gear, the thickness of the internal gear changes linearly along the gear axis, and the thickness of all vibration and noise reduction plates is equal and the same as that of the adjacent gear Bonding, the thickness of the vibration and noise reduction sheet is 18% of the thickness of the largest internal tooth sheet, the thickness of the external tooth sheet is equal and its thickness is 2.5 times the thickness of the largest internal tooth sheet, and the rest are the same as in embodiment 1 or embodiment 2 .

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Abstract

The invention discloses a tangential modified gear. A plurality of gear pieces with the same tooth number and thickening tooth shapes are sequentially overlapped to form the gear, the gear pieces includes outer gear pieces and inner gear pieces, each inner gear piece is positioned between the two outer gear pieces, damping and noise reduction pieces are embedded between the adjacent gear pieces, a shaft hole is formed in the center of each gear piece, a plurality of fixing holes for fixing the gear pieces are formed in the peripheries of the shaft holes, the tip diameters of the gear pieces are as same as the root diameter of the gear pieces, the tooth thicknesses of gear pieces are gradually increased or gradually reduced along the same axial direction of the gear, and the inner gear pieces, the outer gear pieces and the damping and noise reduction pieces form an integrated variable tooth thickness tangential modified outer gear structure. The gear pieces are overlapped to form the variable tooth thickness gear, machining technological properties are fine, the damping and noise reduction pieces are embedded between the gear pieces, gear meshing vibration is restrained from a source, transmission noise is reduced, and the service life of a gear pair is prolonged.

Description

technical field [0001] The invention relates to the technical field of gear transmission, in particular to a tangential displacement gear, which has a complete tangential displacement external gear structure with variable tooth thickness. Background technique [0002] As an important transmission part of the modern automobile industry, the gearbox is one of the main sources of vibration and noise during the operation of the automobile, and its working performance has an important impact on the entire vehicle. Car manufacturers also attach great importance to reducing the vibration and noise of the gearbox, and regard it as a highlight of new cars. Gear meshing generates vibration, which is transmitted to the gear box through the shaft and bearing housing, causing the box to vibrate and radiate noise at the same time. The vibration of the gear meshing interface is the decisive excitation of structural noise. How to suppress the vibration generated by the meshing and reduce t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/17F16H55/14
CPCF16H55/12F16H55/14F16H55/17
Inventor 刘富豪蒋汉军张海涛徐进于学华
Owner YANCHENG INST OF TECH
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