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Friction transmission rotation driving device

A technology of slewing drive and friction transmission, which is applied in the direction of transmission devices, electromechanical devices, electric components, etc., can solve the problems of large load, low precision, and the inability to meet the requirements of high motion stability and high reset accuracy of precision instruments, and achieve stroke The effect of large, high transmission resolution, high motion stability and transmission efficiency

Inactive Publication Date: 2010-09-01
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

Restricted by the level of domestic processing technology and the research and development capabilities of special materials, the non-linear backlash caused by backlash, backlash, and backlash makes this transmission device theoretically able to achieve high transmission resolution, but it cannot meet precision requirements. The instrument requires high motion stability and high reset accuracy, so it is only suitable for low precision, heavy load, and medium resolution application conditions

Method used

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  • Friction transmission rotation driving device
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  • Friction transmission rotation driving device

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Embodiment Construction

[0018] Such as figure 1 As shown, the friction transmission rotary drive device of the present invention includes a drive wheel assembly 1, two follower wheel assemblies 4, and a friction ring 2. The friction ring 2 is firmly connected to the turntable 5, and the driving wheel assembly 1 and the two follower wheel assemblies 4 are tightly connected to the turntable base 3.

[0019] Such as figure 2 As shown, the drive wheel assembly 1 includes a stepper motor 11, a motor base 12, a harmonic reducer 13, a coupling 14, a drive wheel support frame 15, a drive wheel 18, a first pretension adjusting seat, and a first pretension Force adjustment device; the stepping motor 11 and the harmonic reducer 13 constitute a power unit, which is firmly connected to the turntable base 3 through the motor base 12; the input end of the harmonic reducer 13 and the output shaft of the stepping motor 11 In direct series connection, the output shaft of the harmonic reducer 13 is flexibly connected to ...

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Abstract

The invention relates to a friction transmission rotation driving device which comprises a stepping motor, and a power unit is formed by the stepping motor and a harmonic speed reducer and is firmly fixed and connected with a rotary table base by a motor seat; an output shaft of the harmonic speed reducer is flexibly connected with an input end of a driving wheel by a coupler; the driving wheel is connected with a driving wheel support frame and can rotate relatively to the driving wheel support frame; a fixing plate of a pretightening force adjusting seat is fixedly connected with the rotary table base; the upper part of the driving wheel support frame is movably connected with a support plate of the pretightening force adjusting seat by a rotating shaft, and the lower part thereof is connected with a fixed plate of the pretightening force adjusting seat by a pretightening force adjusting device; and a friction ring is pressed by a driving wheel and is firmly fixed and connected with a rotary table. The friction transmission rotation driving device has the characteristics of high transmission resolving power, no reverse gap, compact transmission structure, short guide stroke and long stroke, and is especially applicable to driving a rotating axis with heavy load and high accuracy.

Description

Technical field [0001] The invention relates to a slewing drive device, in particular to a friction drive slewing drive device with high transmission resolution, no backlash, and capable of achieving high motion stability and high reset precision rotation of a slewing motion mechanism. Background technique [0002] Motion systems of precision opto-mechanical systems such as photoelectric tracking systems, large-scale precision turntables, high-precision detection equipment, etc. often use the rotary shaft structure as the motion mechanism. In order to realize the automatic rotation movement of the equipment rotation structure, it is necessary to design a corresponding transmission system to transmit torque in cooperation with the rotation shaft system. Specifically, the power of the external execution unit is transmitted to the rotary shaft, so that the shaft system can realize high-precision and high-resolution rotary motion under the control of the external execution unit by th...

Claims

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Application Information

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IPC IPC(8): F16H37/00H02K7/10
Inventor 何煦陈琦韩冰马洪涛
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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