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Helical bevel gear tooth crest edge chamfering method based on entity contact analysis

A technology of spiral bevel gear and contact analysis, applied in the direction of gear teeth, belts/chains/gears, components with teeth, etc. The effect of low production preparation cost, optimized grinding wheel taper angle and high machining efficiency

Inactive Publication Date: 2017-03-15
YANGTZE UNIVERSITY
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  • Application Information

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Problems solved by technology

In the field of gear chamfering, there are mature processing methods and equipment for cylindrical spur gears, cylindrical helical gears, and conical spur gears, while spiral bevel gears have complex addendum curves and different addendum curves on both sides of the convex and concave surfaces. Symmetry makes chamfering difficult
In order to solve the problem of chamfering of spiral bevel gears, one method is to use a milling cutter disc or a grinding wheel to chamfer one side and then chamfer the other side. This processing efficiency is low and only suitable for several specific processing methods. Manufactured gears; another method is manual chamfering, which has good versatility but lower processing efficiency, and the processing quality is difficult to guarantee

Method used

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  • Helical bevel gear tooth crest edge chamfering method based on entity contact analysis
  • Helical bevel gear tooth crest edge chamfering method based on entity contact analysis
  • Helical bevel gear tooth crest edge chamfering method based on entity contact analysis

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Embodiment Construction

[0054] The invention first establishes the solid model of the spiral bevel gear and the conical grinding wheel, and then uses the solid contact analysis method to determine the spatial movement relationship between the grinding wheel and the gear based on the principle that the grinding wheel cuts into the maximum depth in the direction perpendicular to the face cone. Complete chamfering simulation processing based on the spatial motion relationship. Through the analysis of the chamfering effect of the solid model after the simulation processing, the optimized cone angle of the grinding wheel is determined, so that the chamfering effect is optimal. According to the selected general five-axis machining center structure, calculate the X, Y, Z, A, and B axis motion parameters, and finally output the chamfering CNC code; the details are as follows:

[0055] The profile of the shaft section of the gear is as figure 1 In the figure, x is the axial direction of the gear, and y is the r...

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Abstract

The invention relates to a helical bevel gear tooth crest edge chamfering method based on entity contact analysis and belongs to the technical field of gear machining. The helical bevel gear tooth crest edge chamfering method comprises the steps of gear entity modeling, edge chamfering machining parameter calculation, edge chamfering simulation machining, grinding wheel cone angle optimization and numerical control code output of edge chamfering machining. By the adoption of the helical bevel gear tooth crest edge chamfering method, various spiral bevel gears can be machined by adding a conical grinding wheel on a spindle of a five-axis machining center without manufacturing of special machine tools, and the production and preparation costs are low. According to the method, tooth crests on two side can be simultaneously machined in the one-pass process, and the machining efficiency is high. A grinding wheel cone angle is optimized by analyzing the volume of an entity model after machining, and accordingly the best edge chamfering effect is achieved.

Description

Technical field [0001] The invention relates to a method for chamfering a spiral bevel gear tooth tip based on solid contact analysis, and belongs to the technical field of gear processing. Background technique [0002] After the gear processing is completed, in order to prevent the tooth tip from scraping on the mating tooth surface and causing uneven gear transmission and stress concentration, it is necessary to perform tooth tip chamfering. In the field of gear chamfering, there have been mature processing methods and equipment for cylindrical spur gears, cylindrical helical gears and bevel spur gears. However, spiral bevel gears have complicated addendum curves and different addendum curves on both sides of the convex and concave surfaces. Symmetry makes it difficult to realize chamfering. In order to solve the chamfering problem of spiral bevel gears, one method is to use a milling cutter or a grinding wheel to chamfer on one side, and then chamfer on the other side. This p...

Claims

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Application Information

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IPC IPC(8): B23F19/12
CPCB23F19/12
Inventor 魏巍
Owner YANGTZE UNIVERSITY
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