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Combined variable tooth thickness gear

A variable-tooth-thickness gear, combined 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 achieve the effect of avoiding the noise band being too wide and reducing the noise

Active Publication Date: 2017-01-25
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a combined 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 combination of gears is used to form the internal gear with variable tooth thickness and tangential displacement. Since the thickness of a single tooth is small, it is easy to meet the processing requirements. 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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  • Combined variable tooth thickness gear
  • Combined variable tooth thickness gear
  • Combined 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 combined variable-tooth-thickness gear is composed of 10 ring-shaped gear pieces with the same number of teeth and a thicker tooth shape. On the inner circumference of the ring gear, the gear includes an outer gear 1 located at both ends of the gear in the axial direction and 8 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 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 circle of the tooth sheet and the tooth The diameters of the root circl...

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 variable tooth thickness gear. The gear is sequentially constructed by a plurality of annular gear pieces with the same number of teeth and variable-thickness tooth shapes; the gear teeth of each gear piece are arranged in the inner circumference of the annular gear piece; each gear piece comprises outer gear pieces and inner gear pieces positioned between the two outer gear pieces; a vibration and noise reduction sheet is connected between every two externally-adjacent gear pieces in a glued manner; a plurality of mounting holes used for fixing the gear piece are formed in the circular ring of each gear piece; the tip diameter and the root diameter of each gear piece are equal; the tooth thickness of each gear piece gradually increases or decreases along the same axial direction of the gear; the inner and outer gear pieces and the vibration reduction pieces construct a complete variable tooth thickness tangential-deflection inner gear structure. The combined variable tooth thickness gear constructs the variable tooth thickness gear by combining the gear pieces, so that the gear machining usability is good, the glued vibration and noise reduction pieces are arranged among the gear pieces, the meshing vibration is restrained at the root, the 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 combined variable-tooth-thickness gear, which has a complete variable-tooth-thickness tangential displacement internal gear structure. 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 red...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H55/17F16H55/14F16H55/12
CPCF16H55/12F16H55/14F16H55/17F16H2055/176
Inventor 刘富豪蒋汉军张海涛徐进于学华
Owner YANCHENG INST OF TECH