A gear transmission mechanism for eliminating backlash

Abstract

The invention discloses a gear-driven backlash eliminating mechanism, comprising a main gear including an axial through cavity, backlash eliminating gears arranged on one side of the main gear in parallel, a torsion rod and an internal bevel gear, wherein the outer wall of the other side of the main gear is provided with an outer spline along an axial direction; the torsion rod can rotationally perforates the through cavity; the extending part of one side of the torsion rod is fixedly connected with a pin shaft vertical to the axial direction; the backlash eliminating gears are mounted on the pin shaft; an external skewed tooth section is formed on the outer wall of the extending part of the other side of the torsion rod along the axial direction; an internal bevel gear is sleeved on the other side of the torsion rod; a step-shaped mounting slotted hole is formed on the inner side of the internal bevel gear along the axial direction; an inner spline and the internal skewed tooth section are arranged in the mounting slotted hole along the axial direction; the outer spline of the main gear is matched with the inner spline of the internal bevel gear; and an outer skewed tooth section on the extending part of the other side of the torsion rod is engaged with the inner skewed tooth section of the internal bevel gear. According to the invention, gear-driven backlash can be eliminated; a teeth engaging gap can also be eliminated; in addition, the gear-driven backlash eliminating mechanism has advantages of convenient regulation and easy operation.

Description

technical field [0001] The invention relates to a gear transmission box, in particular to a gear transmission eliminating backlash mechanism. Background technique [0002] At present, during the sawing process of the circular saw, since the saw blade is a disc with a large diameter and many sawtooths on the circumference, the ratio of its thickness to the diameter is very small; and it is rotated and fed at high speed Working under conditions, during the sawing process, each sawtooth cuts the workpiece intermittently one after another, so there are generally serious vibration problems. In order to reduce the vibration of the saw blade when it is working, it is necessary to eliminate the backlash of the gears in the transmission gearbox of the saw machine, so as to minimize the backlash force of the engine on the saw blade, better protect the hard teeth of the saw blade, and improve cutting efficiency. [0003] Such as figure 1 Shown is the anti-backlash structure of the dr...

AI Technical Summary

Problems solved by technology

Although the above-mentioned structure is simple in structure, it is inconvenient to adjust, and it is greatly affected by the space of the gearbox, so it is not easy to operate. At the same time, due to the manufacturing error of the gears, it is impossible to eliminate the backlash when all the teeth mesh at the same time

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