Continuous indexing gear grinding method for cycloidal bevel gear

A cycloid bevel gear and indexing technology, applied in the direction of elements with teeth, belts/chains/gears, gear teeth, etc., can solve the problems of large cost loss, no interchangeability, and can only be used in pairs , to achieve the effect of reducing the continuous indexing speed, ensuring its own strength, and reducing the difficulty of processing

Active Publication Date: 2021-06-15
CHONGQING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for gear pairs with large deformation after heat treatment, the grinding process cannot change the position of the contact area. Therefore, the grinding process has certain application conditions and cannot be used in the case of large deformation during heat treatment. The gears with over-toothed teeth can only be used in pairs and do not have good interchangeability
Or use cemented carbide blades to scrape and remove a thin layer of hardened surface for finishing, but when using cemented carbide scraping tools, higher requirements are placed on the strength of the tool and the rigidity of the machine tool to avoid Due to the periodic fluctuation of the cutting force, the tool is damaged, resulting in a large cost loss. This method is difficult to adapt to the trend of modern manufacturing

Method used

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  • Continuous indexing gear grinding method for cycloidal bevel gear
  • Continuous indexing gear grinding method for cycloidal bevel gear
  • Continuous indexing gear grinding method for cycloidal bevel gear

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Experimental program
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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] According to the cycloidal bevel gear continuous indexing grinding method of the present invention, the cycloidal bevel gear is processed by the face hobbing method, see figure 1 , and then replace the knife bar used for face hobbing on the cutterhead with a conical sand bar in situ, the generatrix of the tapered sand bar coincides with the edge line of the knife bar, and the generatrix of the tapered sand bar coincides with the knife bar The normal vectors on the theoretically generated shape surface formed by the blades are the same. After replacing the conical sand rod in situ, the gear grinding parameters are adjusted first, and then the cycloidal bevel gear is continuously indexed and ground by the generatrix of the sand rod.

[0027] The generatrix of the conical sand bar is used to replace the blade blade, and the gear grinding...

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Abstract

The invention discloses a continuous indexing gear grinding method for a cycloidal bevel gear. The continuous indexing gear grinding method comprises the following steps: after the cycloidal bevel gear is machined by an end face hobbing method, a cutter strip for end face hobbing on a cutter head is replaced with a conical sand rod, the same process parameters as the end face hobbing are adopted, the generatrix of the conical sand rod is used for carrying out continuous indexing gear grinding machining on the cycloidal bevel gear, the motion trail of the conical sand rod is an extension-like epicycloid, and efficient and accurate grinding machining can be carried out on the gear surface of the cycloidal bevel gear.

Description

technical field [0001] The invention relates to gear grinding, in particular to a continuous indexing grinding method for cycloidal bevel gears. Background technique [0002] The face hobbing method can carry out continuous indexing processing, while the end face milling method can only carry out single indexing processing, that is, after processing a tooth surface, the cutter head is separated from the tooth blank, and the tooth blank is rotated at an angle, and then the gear cutting process is performed . Therefore, the face hobbing method has higher processing efficiency than the face milling method, and is widely used in the gear industry. However, due to the forming principle of the face hobbing method, the longitudinal tooth profile curve of the profile wheel tooth surface is an extended epicycloid generated by continuous indexing motion, and it is difficult to use a grinding wheel for grinding the face hobbing gear. [0003] Cycloidal bevel gears can be processed by...

Claims

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Application Information

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IPC IPC(8): B23F9/02
CPCB23F9/02
Inventor 张卫青魏新琪郭晓东谭儒龙张明德
Owner CHONGQING UNIV OF TECH
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