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Planetary transmission system with bevel gears subjected to axial modification

A planetary transmission, helical gear technology, applied in the direction of gear transmission, transmission, components with teeth, etc., to achieve the effect of improving bearing capacity, reducing vibration and noise, and improving transmission performance

Inactive Publication Date: 2012-07-04
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] But this theoretical "completely conjugated" meshing method is not ideal in actual use

Method used

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  • Planetary transmission system with bevel gears subjected to axial modification
  • Planetary transmission system with bevel gears subjected to axial modification
  • Planetary transmission system with bevel gears subjected to axial modification

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Embodiment Construction

[0019] As shown in the figure, the helical gear planetary transmission system adopts tooth surface modification. The inner helical gear 1 and the outer helical gear 5 are both cylindrical gears. The axes of the inner helical gear 1 and the outer helical gear 5 are parallel to each other. The tooth direction and the axial direction of the external helical gear 5 form a certain angle. The external helical gear 5 includes a sun gear 2 and a planetary gear 4. There is 1 sun gear 2 and 1 to 6 planetary gears 4. The helical gear 1 forms a planetary gear train, the tooth surface of the external helical gear 5 is modified, and the internal helical gear 1 meshing with the external helical gear 5 is not modified.

[0020] The invention proposes to preset the transmission error curve as a high-order transmission error curve, and improve the transmission performance through tooth surface modification.

[0021] The invention establishes the dynamic model of the modified helical gear tran...

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PUM

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Abstract

A planetary transmission system with bevel gears subjected to axial modification comprises an internal bevel gear set and an external bevel gear set which are in meshing transmission. External bevel gears in the planetary transmission system have non-involute tooth profile subjected to axial modification, and internal bevel gears have standard involute tooth profile. The internal bevel set and the external bevel set realize parallel axis transmission. As the external bevel gears are modified by the form grinding process, 'local conjugate' of a certain amount of transmission errors is caused when in meshing of the gear set, vibration and noise of planetary gears in transmission can be reduced effectively after load is applied, and accordingly the comprehensive performance of domestic high-speed heavy-load planetary gear reducers (increasers) can be improved.

Description

technical field [0001] The invention belongs to the field of mechanical engineering, and in particular relates to a helical gear planetary transmission reducer (increase) with tooth surface modification applied in a mechanical transmission system. Background technique [0002] The planetary gear reducer has the advantages of small size, large load capacity, large transmission ratio range, high transmission efficiency, etc., and is widely used in aviation, automobile and other fields. According to the transmission conditions of involute gears, the gears in the planetary transmission system are always kept "slanted at one time and straight at all times". For manufacturing reasons, planetary gear transmissions at home and abroad mostly use straight teeth. Recently, some foreign companies have started the design and manufacture of helical planetary transmissions. For example, the Allison automatic transmission in the United States, which is known as the "king of heavy-duty auto...

Claims

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Application Information

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IPC IPC(8): F16H1/32F16H55/17F16H55/08
Inventor 任小中邓效忠徐恺苏建新
Owner HENAN UNIV OF SCI & TECH
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