Tightening device for longitudinal travelling gear of flame cutter

Abstract

The invention discloses a tightening device for a longitudinal travelling gear of a flame cutter. The tightening device comprises a first bracket, a second bracket, a spring and a connecting bolt, wherein the first bracket comprises a bracket body and a limiting plate; a primary step-shaped connecting hole is formed in the front side surface of the bracket body; the bracket body of the first bracket is mounted on a motor frame through two first bolts; the second bracket comprises a seat plate and a connecting plate; a threaded hole is formed in the head of the connecting plate; the rear part of the seat plate is connected with two horizontal limiting columns; the seat plate of the second bracket is mounted on the tail part of the end beam through two second bolts, so that the limiting plate is inserted between two limiting columns, and the connecting plate of the second bracket is positioned in front of the bracket body of the first bracket; the spring sleeves the connecting bolt; andthe connecting bolt passes through the connecting hole so as to be in rotary connection with the threaded hole, so that the spring is positioned between the step surface of the connecting hole and thebolt head of the connecting bolt. The clamping device disclosed by the invention eliminates an engagement gap between the longitudinal travelling gear and a rack.

Description

technical field [0001] The invention relates to an abutment device of a longitudinal traveling gear of a flame cutting machine. Background technique [0002] The longitudinal travel of the existing CNC flame cutting machine adopts the mode of actively driving the end beam unilateral deceleration motor to drive the rack and pinion transmission, and its speed is adjusted by an AC frequency converter. Horizontal guide wheels are installed on the side of the driving end beam. The guide wheels are eccentrically adjustable guide wheels. By adjusting the eccentric shaft, the guide wheels can be pressed against the guide rails, so as to ensure the stability and precision of the whole machine during the whole operation. [0003] Due to the long-term mechanical wear of the rack and pinion, the synchronization and meshing degree of the gears on the end beams on both sides are poor, resulting in poor running stability of the rack. Inconsistency in bilateral walking may easily cause tor...

AI Technical Summary

Problems solved by technology

[0003] Due to the long-term mechanical wear of the rack and pinion, the synchronization and meshing degree of the gears on the end beams on both sides are poor, resulting in poor running stability of the rack

Inconsistencies in bilateral walking may easily cause torsion and jamming, affecting cutting accuracy, and even causing cutting interruption and scrapping of workpieces

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