Continuous indexing gear grinding method for cycloidal bevel gear

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...

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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

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