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Combined radial displacement gear

A shifting gear and combined technology, which is applied in belts/chains/gears, components with teeth, portable lifting devices, etc., can solve the problems of large meshing noise of variable tooth thickness gears and difficult processing of variable tooth thickness gears, etc. Achieve the effect of reducing noise and avoiding excessive noise frequency band

Active Publication Date: 2017-05-17
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 combined radial 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
Combination of gears is used to form a variable tooth thickness radial displacement internal gear. Since the thickness of a single tooth is small, it is easy to meet the processing requirements. The gear processing technology is good, and the application of simple technology can complete the hard tooth surface and high High-precision variable-tooth-thickness gear processing solves the problem of difficult processing of variable-tooth-thickness gears in the prior art, and can improve the load-carrying capacity and running accuracy of the transmission device

Method used

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Examples

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Embodiment 1

[0028] exist figure 1 figure 2 In the shown embodiment 1, a combined radial displacement gear is composed of 10 ring-shaped gear pieces with the same number of teeth and a thickened tooth shape. The gear teeth of the gear pieces are set On the inner circumference of the annular tooth piece, the tooth piece includes an outer tooth piece 1 arranged at both ends of the gear axial direction and 8 inner tooth pieces 2 between the two outer tooth pieces (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 glued between the adjacent gears, and a total of 9 vibration and noise reduction plates are set sheet, the thickness of the vibration and noise reduction sheet is 30% of the thickness of the inner tooth sheet, and the ring of the tooth sheet is provided with a number of fixing holes 5 for fixing the tooth sheet, the diameter of the addendum c...

Embodiment 2

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

Embodiment 3

[0032] In Embodiment 3, the gear includes 9 internal gears and 10 vibration-reducing and noise-reducing plates. The internal gears have different thicknesses, and the thickness of the inner gear with a smaller tooth thickness is greater than that of the inner gear with a 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, the thickness of all vibration and noise reduction plates is equal and its thickness is the largest internal tooth 18% of the sheet thickness, the thickness of the external tooth sheet is equal and its thickness is 2.5 times of the thickness of the largest internal tooth sheet, all the other are the same as embodiment 1 or embodiment 2.

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Abstract

The invention discloses a combined type radial profile-modified gear which comprises a plurality of annular tooth sheets. The tooth sheets with identical tooth numbers and thickened tooth profiles are sequentially combined with one another, teeth of the tooth sheets are arranged on the inner circumferences of the annular tooth sheets, the tooth sheets include outer tooth sheets and inner tooth sheets, the inner tooth sheets are positioned between the two outer tooth sheets, vibration attenuation and noise reduction sheets are bonded between the adjacent tooth sheets, a plurality of mounting holes for fixing the tooth sheets are arranged on rings of the tooth sheets, the diameters of tooth tip circles of the tooth sheets and the diameters of tooth root circles of the tooth sheets are progressively increased or decreased along the same axial direction of the gear, and the inner tooth sheets, the outer tooth sheets and the vibration attenuation and noise reduction sheets form a complete radial profile-modified inner gear structure with a variable tooth thickness. The combined type radial profile-modified gear has the advantages that the tooth sheets are combined with one another to form the gear with the variable tooth thickness, and accordingly the gear is good in machining technology; the vibration attenuation and noise reduction sheets are bonded between the tooth sheets, so that mesh vibration of the gear can be suppressed fundamentally, transmission noise can be lowered, and the service life of a gear pair can be prolonged.

Description

technical field [0001] The invention relates to the technical field of gear transmission, in particular to a combined radial displacement gear, which has a complete radial displacement internal 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 ...

Claims

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Application Information

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