Automatic worm wheel and worm clearance eliminating mechanism

A worm gear and clearance technology, applied in the direction of gear transmission, mechanical equipment, transmission, etc., to achieve the effect of simple structure, low cost, easy installation and adjustment

Inactive Publication Date: 2017-02-22
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of changing the tooth shape of the worm gear or worm has certain difficulties in processing and manufacturing, and the simultaneous contact between the two sides of the gear teeth can only solve the problem in a short time. If the gap continues to expand, regular manual intervention is required to eliminate the variable amount of the gap

Method used

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  • Automatic worm wheel and worm clearance eliminating mechanism

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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] The present invention is implemented through the following technical solutions. figure 1 It is a structural diagram of the present invention. A worm gear and worm automatic backlash elimination mechanism includes a frame 1, a spring 2, a spring retainer 3, a first bearing seat 4, a worm screw 5, a second bearing seat 6, a linear guide rail 7 and a worm wheel 8. The first bearing seat 4, the second bearing seat 6 and the worm screw 5 are connected to the frame 1 through the linear guide rail 7, and the first bearing seat 4, the second bearing seat 6 and the worm screw 5 can slide along the linear guide rail 7 in the direction shown in the figure . The second bearing seat 6 is a bearing seat with the same function as the first bearing seat 4 and opposite directions.

[0015] Tighten the spring pressure ring 3 to tighten the spring 2, t...

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PUM

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Abstract

The invention relates to an automatic worm wheel and worm clearance eliminating mechanism which is suitable for a worm wheel and worm transmission mechanism having relatively high requirements on accuracy. The automatic worm wheel and worm clearance eliminating mechanism is characterized in that a worm (5) is compressed by springs (2) and is guided by linear guide rails (7), so that the worm (5) is pressed against a worm wheel (8), thereby eliminating the clearance between wheel teeth of the worm wheel and the worm. The automatic worm wheel and worm clearance eliminating mechanism has the beneficial effects that during assembly, the pre-tightening force of the springs (2) is adjusted well, so that the springs can automatically compensate the clearance caused by thermal expansion coefficient difference and wearing of the worm wheel and the worm when the temperature changes; and the springs are assembled and adjusted in the right place at one time during initial assembly and do not need to be repeatedly adjusted. The automatic worm wheel and worm clearance eliminating mechanism is simple in structure, high in accuracy, easy to install and adjust and low in cost.

Description

technical field [0001] The invention belongs to the technical field of mechanical devices, and in particular relates to a worm gear and worm automatic backlash elimination mechanism, which is suitable for worm gear and worm transmission mechanisms with high precision requirements, especially for systems with high positioning precision requirements. Background technique [0002] Worm gear transmission has the advantages of large transmission ratio, self-locking, compact structure, etc., but similar to gear transmission, there is a unilateral gap when the gear teeth mesh, and there will be a backlash phenomenon when they mesh in the reverse direction, which affects the accuracy of the transmission mechanism. Worm gear clearance is an important factor limiting the accuracy of the transmission mechanism. At present, commonly used worm and gear mechanisms usually reduce or eliminate the influence of the gap by changing the tooth shape of the worm gear or worm, or by interlacing t...

Claims

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Application Information

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IPC IPC(8): F16H57/12F16H1/16
CPCF16H57/12F16H1/16F16H2057/127
Inventor 鲜浩李程马文礼
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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