A device for eliminating transmission gear clearance in a gearbox

Abstract

The invention discloses a device for eliminating backlash of transmission gears in a gearbox, which includes an input gear and an output gear, and an anti-backlash shaft. The left end of the anti-backlash shaft is provided with a first anti-backlash gear through a locking piece. The right end of the backlash shaft is fixedly sleeved with a second anti-backlash gear; the input gears are respectively meshed with two first anti-backlash gears, and the output gears are respectively meshed with two second anti-backlash gears; There is an arc-shaped step on the left end surface of the gear, and an adjusting piece is installed on the left end of the anti-backlash shaft. Backlash function; the present invention has simple structure, convenient disassembly and assembly, greatly reduced operating costs, stable backlash elimination, manual adjustable backlash elimination, universal application to various transmission situations, linkage anti-backlash, forward and reverse backlash elimination, and effective guarantee of anti-backlash The beneficial effect of gap precision.

Description

technical field [0001] The invention belongs to the technical field of gear backlash elimination, and in particular relates to a device for eliminating the backlash of transmission gears in a gear box. Background technique [0002] In the field of transmission in the mechanical gearbox of CNC machine tools, it is often necessary to reduce the output speed of the gearbox to achieve high torque output. The deceleration of the output speed of the gearbox is achieved through the meshing transmission of a specific reduction ratio between the gear sets inside the gearbox. Ideally, the transmission ratio between the gears is fixed, that is, the gear set The speed after deceleration is also constant. However, in the case of time, due to the production process of the gear and the assembly accuracy between the gear sets, there will be errors. Therefore, when the teeth of the gear set mesh with each other, there will be a certain transmission gap between the tooth surfaces of the tran...

AI Technical Summary

Problems solved by technology

However, in the case of time, due to the production process of the gear and the assembly accuracy between the gear sets, there will be errors. Therefore, when the teeth of the gear set mesh with each other, there will be a certain transmission gap between the tooth surfaces of the transmission teeth. The output end of the gearbox has high positioning accuracy requirements, and the transmission gap between the transmission teeth will have a greater impact on the positioning accuracy of the output end, resulting in insufficient positioning accuracy, especially in the field of precision transmission. Necessary and necessary to eliminate transmission gap between gear sets

The existing way to eliminate the transmission gap of the gear set generally eliminates the transmission gap through helical gear transmission, but the production cost of the helical gear is relatively high

The traditional method of eliminating the transmission gap by using spur gears is mostly to manufacture gears with materials that can be deformed and restored, compress the gears with springs or hairsprings, and magnetize the gear teeth to make the tooth surfaces of the meshing teeth fit together to achieve backlash elimination. function, but the above method still has defects such as high cost and unstable anti-backlash

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