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High-speed transmission correcting gear

A technology for correcting gears and high-speed transmission, which is applied to belts/chains/gears, components with teeth, portable lifting devices, etc. It can solve the problems of insufficient compact transmission structure, increase the size and weight of transmission gear pairs, etc., and achieve improvement Effects of strength and transmission efficiency, improved meshing conditions, and simple processing methods

Inactive Publication Date: 2009-09-23
CHENDU KEDA AUTOMATION CONTROL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still some limitations in standard gear transmission: (1) limited by undercutting, the number of teeth must not be less than Z min , so that the transmission structure is not compact enough; (2) It is not suitable for occasions where the installation center distance a' is not equal to the standard center distance a
In this way, in some occasions that require high-speed transmission and a large transmission ratio, in order to obtain a large transmission ratio, the number of teeth of the large gear must be increased, which increases the size and weight of the transmission gear pair.

Method used

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Examples

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Embodiment

[0019] When K=1 is selected, the pinion adopts the correction method of adding 1 to the number of teeth, and its geometric elements are as follows:

[0020] 1.1 Pitch circle diameter d 1 =mZ 1

[0021] 1.2 Pitch circle diameter d t1 =m(Z 1 +1)

[0022] 1.3 Base circle diameter d 01 =mZ 1 cos 20°

[0023] 1.4 Base section t 0 = mπcos 20°

[0024] 1.5 Top circle diameter d e1 =m(Z 1 +3)

[0025] 1.6Z 1 ,Z 2 The actual meshing angle α of the two gears,

[0026] 1.7Z 1 ,Z 2 When the meshing gap between the two gears is 0.03m, the correction coefficient of the small gear and the large gear is

[0027]

[0028] 1.8 Overall height of pinion teeth (total height of large gear teeth) h 1 (h 2 )=m[2.25-(ξ 1 -0.5)]

[0029] 1.9 Pinion root circle diameter d i1 =(z 1 +2ξ 1 -2.5)m

[0030] 1.10 Fixed Chord Thickness s 1 = m ( Z 1 + ...

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Abstract

The invention discloses a high-speed transmission correction gear used in the occasion of large transmission ratio, which can improve the meshing condition of the gears and reduce the number of teeth of the pinion gear. The pinion adopts (Z1+K) to correct the calculation and processing of the tooth profile depth, and the large gear adopts (Z2+(Z2 / Z1)K) to correct the calculation and processing of the tooth profile depth. The coefficient K is 0.5~1. Both the pinion and the bull gear are indexed according to the actual number of teeth. By correcting the calculation and processing of the tooth profile depth of the large and small gears, not only the number of teeth of the pinion gears can be reduced, the linear speed of the bottom gear can be reduced to increase the speed of rotation, but also the meshing conditions of the gears can be improved and the wear of the gears can be reduced. , Increase the working life of the gear, but also improve the strength and transmission efficiency of the gear. The correction method and processing method provided by the present invention are relatively simple, bring convenience to design and processing, and are especially suitable for use in high-speed transmission occasions.

Description

technical field [0001] The invention relates to a gear, especially a high-speed transmission correction gear used in the occasion of large transmission ratio. Background technique [0002] The involute standard gear design is simple in calculation and has good interchangeability. However, there are still some limitations in standard gear transmission: (1) limited by undercutting, the number of teeth must not be less than Z min , so that the transmission structure is not compact enough; (2) It is not suitable for occasions where the installation center distance a' is not equal to the standard center distance a. When a'<a, it cannot be installed. When a'>a, although it can be installed, it will cause excessive backlash and cause shock vibration, which will affect the stability of transmission; (3) when a pair of standard gears are driven, small The thickness of the dedendum of the gear is small and the number of meshes is large, so the strength of the pinion is low, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H55/17
Inventor 郑飞蒋汉峰
Owner CHENDU KEDA AUTOMATION CONTROL ENG
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