Tooth profile design of dual-pressure angle involute helical tooth externally-meshed cylindrical gear

A cylindrical gear, double pressure angle technology, applied in the direction of elements with teeth, belts/chains/gears, mechanical equipment, etc., can solve problems such as difficulty in meeting equipment requirements

Inactive Publication Date: 2012-03-14
李宁 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the gradual increase of high-speed and heavy-duty phenomena in gear transmission, the traditional involute helical cylindrical gear has been difficult to meet the requirements of the equipment.

Method used

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  • Tooth profile design of dual-pressure angle involute helical tooth externally-meshed cylindrical gear
  • Tooth profile design of dual-pressure angle involute helical tooth externally-meshed cylindrical gear
  • Tooth profile design of dual-pressure angle involute helical tooth externally-meshed cylindrical gear

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Experimental program
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Embodiment Construction

[0062] According to the design requirements of the double pressure angle involute helical external meshing cylindrical gear that needs to be designed, select the standard normal surface modulus, the pressure angle of the normal surface driving side and the driven side involute at the indexing circle, the normal surface Active side addendum height coefficient, radial clearance coefficient, number of teeth, helix angle, tooth thickness and other basic design parameters, and then convert the normal surface parameters into corresponding end surface parameters according to the conversion relationship between the normal surface and end surface parameters.

[0063] According to the end modulus m t , the number of teeth z, the coefficient of addendum height on the driving side of the end face The value of , according to the parameter equation of the addendum circle, can be obtained figure 1 Middle addendum circle curve 5;

[0064] According to the end modulus m t , the number of t...

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Abstract

The invention relates to a dual-pressure angle involute helical tooth externally-meshed cylindrical gear, and belongs to the technical field of gears. In the conventional involute helical tooth externally-meshed cylindrical gear, pressure angles at reference circles on two sides of involutes on the driving side and the driven side are equal to each other, but in the dual-pressure angle involute helical tooth externally-meshed cylindrical gear, a large pressure angle is formed at a reference circle of an involute on the driving side, and a small pressure angle is formed at a reference circle of an involute on the driven side, so the performance of the gear can be improved due to an asymmetrical design. A tooth profile on the end face of the gear comprises the involute (1) on the driving side, a tooth root transition curve (2) on the driving side, the involute (3) on the driven side, a tooth root transition curve (4) on the driven side, a tooth crest circular arc (5) and a tooth root circular arc (6); and the tooth profile on the end face moves along a spiral line to form the final dual-pressure angle involute helical tooth externally-meshed cylindrical gear.

Description

technical field [0001] The invention belongs to the technical field of gears, and in particular relates to a tooth shape design of a double pressure angle involute helical external meshing cylindrical gear. Background technique [0002] In the parallel shaft power transmission of mechanical equipment, involute cylindrical gears have been widely used due to their own advantages. With the gradual increase of high speed and heavy load in gear transmission, the traditional involute helical cylindrical gear has been difficult to meet the requirements of the equipment. In order to improve the performance of involute helical gears and manufacture gears with high load capacity, low vibration and noise, small volume and light weight, a new type of involute cylindrical gears—double pressure angle involute helical gears is proposed. Toothed external spur gear. Contents of the invention [0003] The purpose of the present invention is to provide a tooth shape design of a double pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/17F16H55/08
Inventor 李宁李威
Owner 李宁
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