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Grinding method for starwheel oval straight channel

A star wheel and channel technology, which is applied in grinding/polishing equipment, grinding machines, metal processing equipment, etc., can solve the problems that cannot meet the accuracy requirements of aviation high-precision star wheels, and achieve the accuracy requirements and stable dimensional accuracy , Reduce the effect of processing deformation

Inactive Publication Date: 2013-03-20
HARBIN DONGAN ENGINE GRP
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing methods cannot meet the accuracy requirements of aviation high-precision star wheels

Method used

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  • Grinding method for starwheel oval straight channel
  • Grinding method for starwheel oval straight channel

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Experimental program
Comparison scheme
Effect test

Embodiment

[0035] A certain type of engine coupling star wheel elliptical straight channel grinding, star wheel spherical outer diameter 52mm, width 21±0.05mm, straight channel ellipse short axis 18.37mm, long axis 19.12mm, star wheel elliptical straight groove The surface roughness of the raceway is not higher than Ra0.4mm, the roundness error of the arc channel of the star wheel parts is not greater than 0.008mm, the angle difference between any two raceways of the star wheel is not greater than 1.5′, and the pitch circle diameter error of the raceway is not greater than 0.008mm. Not more than 0.01mm.

[0036] The implementation process is as follows:

[0037] 1) Preparation: prepare the star wheel of the oval straight channel to be processed;

[0038] 2) Processing: Process the inner mounting hole of the star wheel to a qualified size, and process the end face and outer spherical surface of the star wheel. The maximum flatness of the machined end face is 0.003mm, and the maximum roun...

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Abstract

The invention relates to a grinding method for a starwheel oval straight channel. A numerically controlled forming gear grinding machine is adopted as high-precision starwheel straight channel grinding equipment, and a high-precision starwheel straight channel grinding process method is provided through customizing a special starwheel fixture and using a coordinate fitting forming method, so as to implement grinding machining on the aerial high-precision starwheel straight channel. The correcting capability, the high-precision scale division capability and the size precision stability of the numerically controlled forming gear grinding machine are utilized; meanwhile, the cooling oil can dissipate the grinding heat in the grinding process, as a result, the machining deformation is reduced, the roughness of the machined surface is improved, so that various indexes of the grinded starwheel straight channel meet the precision requirements of the aerial high-precision starwheel.

Description

technical field [0001] The invention relates to a grinding method, in particular to a grinding method for an elliptical straight channel of a star wheel. technical field [0002] Type the technical field description paragraph here. Background technique [0003] The outer contour of the ellipse of the star wheel is spherical, and its straight channels are evenly distributed on the outer contour of the star wheel, and the cross section is elliptical. Its structure is figure 1 and figure 2 shown. Before use, the oval straight channel of the star wheel should be ground to ensure the use requirements. At present, the existing domestic star wheel elliptical straight channel grinding method usually adopts the method of dressing the grinding wheel and using the indexing fixture after the transformation of the ordinary cylindrical grinding machine. The grinding accuracy is limited by the machining accuracy of the machine tool and the indexing accuracy of the fixture manufactur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B19/06
Inventor 董超赵燕迟本江孙旭东
Owner HARBIN DONGAN ENGINE GRP
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