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A processing method for ultra-narrow hollow sipe double-helical gears suitable for high-speed and heavy-duty machinery

A processing method and double helical technology, applied in the processing field of ultra-narrow hollow kerf double helical gears, can solve the problems of shortening the gear meshing line, stress concentration, increasing tooth width of double helical gears, increasing gear volume and weight, etc. The effect of extending the length of the contact line, improving the meshing condition, and improving the transmission performance

Active Publication Date: 2019-08-30
BEIHANG UNIV
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  • Application Information

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Problems solved by technology

[0002] Since traditional double helical gears must have empty sipes to realize the tool clearance of the butterfly grinding wheel in the feed movement stroke during the grinding process, the large empty slits directly lead to the increase in the tooth width of the double helical gear and the gear volume , weight gain and a series of problems
Especially in some cases where the volume of the transmission box is limited, the overall tooth width of the double helical gear is limited, and the existence of large empty sipes directly leads to the reduction of the tooth width of the teeth on both sides, which shortens the meshing line of the gears and reduces the stress during the meshing process. Concentration is prominent, which directly reduces the mechanical properties and life of double helical gears

Method used

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  • A processing method for ultra-narrow hollow sipe double-helical gears suitable for high-speed and heavy-duty machinery
  • A processing method for ultra-narrow hollow sipe double-helical gears suitable for high-speed and heavy-duty machinery
  • A processing method for ultra-narrow hollow sipe double-helical gears suitable for high-speed and heavy-duty machinery

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] The present invention is a method for processing ultra-narrow empty sipe double helical gears suitable for high-speed and heavy-duty machinery, comprising the following steps:

[0028] Step 1, prepare materials and forge workpieces;

[0029] Among them, in step 1, the forged workpiece is selected as the material. In order to make the double helical gear more suitable for high-speed and heavy-duty mechanical equipment, the material is preferably 18CrNi4A, 9310 steel and other steel materials, and the blank is formed by integral forging.

[0030] Step 2. Process the two end faces of the double helical gear to form a datum plane, and the flatness requirement is 0.01;

[0031] Among them, in step 2, two end faces are processed first to form a datum plane, the flatness requirement is 0.01, the two faces are mutually a reference, and the para...

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Abstract

The invention discloses a machining method of an ultra-narrow clearance groove double helix gear suitable for a high-speed and heavy-duty machine. Firstly, turning is carried out on the middle part ofthe double helix gear to machine a clearance groove; secondly, gear teeth on the two sides of the double helix gear are machined through insertion tooth rough machining; and thirdly, surface heat treatment carburization strengthening treatment is carried out on the gear teeth. The machining method is suitable for a butterfly grinding wheel for gear tooth precision grinding machining, and as for the wheel teeth on the part close to the clearance groove, a finger-like grinding wheel is adopted for conducting precision grinding machining. Compared with a traditional double helix gear, the ultra-narrow clearance groove double helix gear is provided with the narrower clearance groove, the bearing capacity is higher, the effective meshing contact line is longer, and the structure is more compact. The machining method is particularly suitable for high-speed and heavy-duty working conditions required by ship and aviation transmission systems.

Description

technical field [0001] The invention relates to the technical field of processing double-helical gears, in particular to a processing method for ultra-narrow hollow sipe double-helical gears suitable for high-speed and heavy-duty machinery. Background technique [0002] Since traditional double helical gears must have empty sipes to realize the tool clearance of the butterfly grinding wheel in the feed movement stroke during the grinding process, the large empty slits directly lead to the increase in the tooth width of the double helical gear and the gear volume , weight gain and a series of problems. Especially in some cases where the volume of the transmission box is limited, the overall tooth width of the double helical gear is limited, and the existence of large empty sipes directly leads to the reduction of the tooth width of the teeth on both sides, which shortens the meshing line of the gears and reduces the stress during the meshing process. The concentrated situati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/14
Inventor 王延忠杨凯刘鹏
Owner BEIHANG UNIV
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