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Laminated compound displacement gear

A displacement gear, laminated technology, applied in belts/chains/gears, components with teeth, portable lifting devices, etc., can solve the problems of difficult processing of variable-tooth thickness gears and high meshing noise of variable-tooth thickness gears. , to avoid the noise band being too wide and reduce the noise

Active Publication Date: 2017-04-12
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 laminated compound shifting gear with easy processing and low meshing noise to solve the problem of the difficulty in processing the variable tooth thickness gears in the prior art and the large meshing noise of the variable tooth thickness gears in the prior art
The variable-tooth-thickness gear is formed by lamination. Because the thickness of a single tooth is small, it is easy to meet the processing requirements. The gear processing is good. The application of a simple process can complete the hard tooth surface and high-precision variable-tooth-thickness gear processing. It solves the problem of difficult machining 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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  • Laminated compound displacement gear
  • Laminated compound displacement gear
  • Laminated compound displacement gear

Examples

Experimental program
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Effect test

Embodiment 1

[0028] in figure 1 figure 2 In the illustrated embodiment 1, a laminated composite displacement gear is composed of 11 gears with the same number of teeth and a thickened tooth profile stacked in sequence, and the gears include The outer gear 1 at both ends and the 9 inner gears 2 located between the two outer gears (see image 3 ), the thickness of all the inner gears is equal, the thickness of the outer gear is 4 times the thickness of the inner gear, and the vibration and noise reduction sheet 3 is glued between adjacent gears. The basic structure of the vibration and noise reduction sheet It is compatible with the tooth plate, all the thickness of the vibration and noise reduction plate is equal and is glued to the adjacent tooth plate, the thickness of the vibration and noise reduction plate is 30% of the thickness of the inner tooth plate, and the center of the tooth plate is provided The shaft hole 4 is provided with a number of fixing holes 5 around the shaft hole for f...

Embodiment 2

[0030] The gear of embodiment 2 is a helical gear. The thickness of the 7 internal gears in the gear is equal, and the 8 vibration and noise reduction plates are glued to the adjacent gears, and are located on the side of the inner gear with the larger tooth thickness. The thickness of the vibration and noise reduction sheet is greater than the thickness of the vibration reduction and noise reduction sheet located on the side of the inner gear with the smaller tooth thickness. The thickness of the vibration reduction and noise reduction sheet changes linearly along the gear axis. The minimum thickness of the vibration and noise reduction sheet 16% of the thickness of the inner gear, the maximum thickness of the vibration and noise reduction sheet is 30% of the thickness of the inner gear, the thickness of the outer gear is the same and its thickness is 3 times the thickness of the inner gear, and the rest is the same as in Example 1. .

Embodiment 3

[0032] In Example 3, the gear includes 8 internal gears and 9 vibration and noise reduction plates. The internal gears have different thicknesses. The thickness of the internal gear with a smaller tooth thickness is greater than that of the internal gear with a larger tooth thickness. Thickness, the maximum thickness of the internal gear is 1.8 times the thickness of the minimum thickness of the internal gear, the thickness of the internal gear changes linearly along the axial direction of the gear, the thickness of all the vibration and noise reduction plates are equal and the thickness of the vibration and noise reduction plates The thickness is 18% of the thickness of the largest inner tooth, the thickness of the outer tooth is equal and its thickness is 2.5 times the thickness of the largest inner tooth, and the rest is the same as in embodiment 1 or 2.

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Abstract

The invention discloses a laminated composite profile shifted gear. The gear is formed by laminating several tooth blades with the same tooth number and thickened tooth shape in order; each of the tooth blade comprises outer tooth blades and inner tooth blades located between two outer tooth blades, a vibration and noise reducing slice is glued to the middle of adjacent tooth blades, and the center of the tooth blades is provided with an axial hole; four sides of the axial hole are provided with several fixing holes for fixing the tooth blades, the tip diameter, root diameter and tooth thickness of the tooth blades are progressively increased or reduced along the same one axial direction of the gear; inner and outer tooth blades and the vibration and noise reducing slice are formed to be a complete composite profile shifted gear with variable tooth thicknesses. The gear with variable tooth thickness is formed by a laminating method, the gear processing usability is good; the vibration and noise reducing slice is glued to the middle of the tooth blades, and thereby the meshing and vibration of the gear are inhibited radically, the transmission noise is reduced, and the service life of the gear pair is prolonged.

Description

Technical field [0001] The invention relates to the technical field of gear transmission, in particular to a laminated composite displacement gear which has a complete variable tooth thickness composite displacement external gear structure. Background technique [0002] As an important transmission component of the modern automobile industry, the gearbox is one of the main sources of vibration and noise during automobile operation. Its working performance has an important influence on the entire vehicle. Automobile manufacturers also attach great importance to reducing the vibration and noise of the gearbox and regard it as the highlight of new cars. Gear meshing produces vibration, which is transmitted to the gear box body through the shaft and bearing seat, causing the box body to vibrate and radiate noise. 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 the noise from...

Claims

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Application Information

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