Processing device and processing method for gear

Abstract

The invention discloses a processing device for a gear. The processing device comprises a cutting and turning tool, wherein the cutting and turning tool is in a face gear shape and is engaged to a gear, the helical angle of the cutting and turning tool is beta 1, the helical angle of the gear is beta 2, the helical angle of the cutting and turning tool beta 1 and the helical angle of the gear beta2 are different, and a bias mounting angle gamma between the cutting and turning tool and the gear is equal to beta 1 plus beta 2. The processing method comprises the specific following steps: the cutting and turning tool and the gear are driven by corresponding driving devices to rotate at a fixed transmission ratio to simulate an engaging motion process of the cutting and turning tool and the gear, and the motion process, the cutting and turning tool is radially fed close to the gear in an axis direction to control the cutting depth; and the gear is fed in a tooth direction in a tooth length direction to control a tooth cutting length, and as the cutting and turning tool and the gear are different in helical angle, an engaging point slides relatively in a toothed portion direction during engaging motion so as to generate a cutting motion, thereby processing the gear by the cutting and turning tool. The processing device is simple in structure and easy to guarantee precision.

Description

technical field [0001] The invention relates to the technical field of gear cutting processing methods, in particular to a processing device and a processing method for gears. Background technique [0002] Among the gears, the helical gear has a higher load-carrying capacity than the spur gear, and the helical gear has a good meshing property and a relatively large overlap, so the vibration is small and the noise is low. Because the helical gears will generate axial force when meshing, especially in the case of heavy load, the axial force is very large, and the extra axial force is unfavorable to the transmission. In order to eliminate the axial force, a herringbone gear is produced. Due to the double-helix symmetrical structure of the herringbone gear, the axial forces cancel each other out. Therefore, the herringbone gear transmission has almost no axial force. It has a strong bearing capacity and stable transmission. It is used in aerospace and other key industrial fields...

AI Technical Summary

Problems solved by technology

The structure of the gear grinding machine tool is complex, and the grinding wheel needs to be dressed online, which requires high precision control, and it is difficult to achieve the unity of production efficiency and processing quality, resulting in high cost of gear grinding

The current cutting or shaving methods are limited by tools, machine tools, etc., there are deficiencies in technology, and the application range is narrow

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