Worm transmission device capable of eliminating gear backlash

Abstract

The invention discloses a worm transmission device capable of eliminating a gear backlash and aims to achieve effects that the gear backlash is reduced or eliminated, precision transmission is realized, the bearing capacity is large, and the worm transmission device is convenient to machine and manufacture. The worm transmission device comprises a worm (10) and a worm gear (20), wherein the worm (10) consists of a left section of worm (11) and a right section of worm (12) which are coaxially arranged; left and right tooth surfaces are respectively formed by enveloping different surfaces of a sinusoidal line grinding wheel once; sinusoidal gear teeth are radially and uniformly distributed on the worm gear (20) and formed by enveloping a hob of which the shape is consistent with that of the worm twice; and an adjustment mechanism for adjusting the relative position and the relative rotation angle of the left section of worm (11) and the right section of worm (12) is arranged between the left section of worm (11) and the right section of worm (12).

Description

technical field [0001] The invention belongs to a worm transmission device, in particular to a transmission device capable of eliminating tooth side clearance. Background technique [0002] In gear transmission, proper tooth backlash is one of the necessary conditions for the normal operation of the transmission mechanism. The existence of backlash can avoid the extrusion or jamming caused by the expansion of gear teeth due to force deformation and frictional heat; it can compensate manufacturing and assembly errors to a certain extent, so that a more economical manufacturing process can be used; it can provide accommodation The space for lubricating oil is convenient for tooth surface lubrication, etc. However, due to the existence of tooth backlash, it will inevitably bring shock, vibration, noise, and reduce system follow-up accuracy and stability to modern electromechanical systems such as industrial robots, CNC machine tools, printing equipment, automatic artillery and...

AI Technical Summary

Problems solved by technology

For example, the patent application number is 200610102244.6 "precision worm gear transmission anti-backlash device", the patent application number is 200510050421.6 "a kind of worm gear transmission device", the patent number is ZL99117383.X "planar enveloping toroidal worm with adjustable backlash Although these transmissions can eliminate backlash, they have many transmission elements, large volume, and complex structure, so it is difficult to apply to the transmission of servo drive systems that require high transmission precision, large load capacity, and compact structure.

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