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Stacked variable tooth thickness gear

A variable-tooth-thickness gear and laminated technology, which is applied to belts/chains/gears, components with teeth, portable lifting devices, etc., can solve the problem of large meshing noise of variable-tooth-thickness gears, difficulty in processing variable-tooth-thickness gears, etc. problems, to achieve the effect of eliminating transmission noise, avoiding excessive noise frequency band, and reducing noise

Active Publication Date: 2016-11-30
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 variable-tooth-thickness gear that is easy to process and has low meshing noise in order 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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  • Stacked variable tooth thickness gear
  • Stacked variable tooth thickness gear
  • Stacked variable tooth thickness gear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] exist figure 1 figure 2 In the shown embodiment 1, a laminated gear with variable tooth thickness is composed of 11 tooth plates with the same number of teeth and thicker tooth shapes. The outer gears 1 facing both ends 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. The shaft hole 4 is provided with a number of fixing holes 5 for fixing the tooth piece around the shaft hole. The diameter of the addendum circle and t...

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 laminated gear with variable tooth thickness. The gear is formed by laminating several tooth blades with thickened tooth shape in order; each of the tooth blades comprises outer tooth blades arranged at both sides of the axial direction of the gear and several inner tooth blades located between outer tooth blades at both ends, thickness of each of the outer tooth blade is more than that of the inner tooth blade, and a vibration and noise reducing slice is embedded between the tooth blades, the tip diameter and root diameter of the tooth blade are progressively increased or decreased along the axial direction of the gear; the inner and outer tooth blades and the vibration and noise reducing slice are formed to be an external gear structure with variable tooth thickness and deflection in radial direction. The gear with variable tooth thickness is formed by adopting a laminating method, the gear processing usability is good; by embedding the vibration and noise reducing slice between the tooth blades, the meshing and vibration of the gear can be 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 variable-tooth-thickness gear, which has a complete radial-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 r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H55/17F16H55/14F16H55/12F16H55/06
CPCF16H55/06F16H55/12F16H55/14F16H55/17
Inventor 刘富豪蒋汉军张海涛徐进于学华
Owner YANCHENG INST OF TECH