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Space integration multifunction high precision dynamic universal rotating mechanism

A rotating mechanism and universal rotation technology, applied in manipulators, manufacturing tools, etc., can solve the problems of large moment of inertia, complex structure, short rotation chain, etc., achieve high aiming control accuracy, low thermal control requirements, and is conducive to popularization and application Effect

Inactive Publication Date: 2008-02-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of large moment of inertia, high requirements for thermal control of the on-satellite platform, low precision, and complex structure in the installation of the current rough aiming mechanism, the present invention provides a space-integrated multifunctional high-speed camera with small moment of inertia, high precision and simple structure. Precision dynamic universal rotation mechanism, which includes azimuth rotation mechanism 1, pitch rotation mechanism 2 and mirror 3, the rotation axis of the azimuth rotation mechanism 1 and the rotation axis of the pitch rotation mechanism 2 are vertically arranged, and the reflection mirror 3 is Two parallel to each other, two mirrors 3 and the rotation axis of the azimuth rotation mechanism 1 and the rotation axis of the pitch rotation mechanism 2 are all set at an angle of 45 degrees and are fixed by the azimuth rotation mechanism 1 and the pitch rotation mechanism 2; The azimuth rotation mechanism 1 structurally includes a transmission shaft 8, the transmission shaft 8 is connected to the outer casing 4 through a bearing 7, and a hollow motor 5 and a code disc 6 are arranged between the transmission shaft 8 and the outer casing 4. The rotor of the hollow motor 5 is fixedly connected to the transmission shaft 8, and the stator of the hollow motor 5 is fixedly connected to the outer casing 4; the code disc 6 includes a disk surface 6-1 and a reading head 6-2, and the disk surface 6-1 is connected to the transmission The shaft 8 is fixedly connected, and the reading head 6-2 is fixed on the outer casing 4; the pitch rotation mechanism 2 is structurally the same as the azimuth rotation mechanism 1, and one end of the outer casing of the pitch rotation mechanism 2 is fixed on the azimuth rotation mechanism 1. drive shaft end
[0004] The motor of the dynamic universal rotating mechanism of the present invention is a hollow motor, which is directly installed on the transmission shaft, and directly drives the code disc to rotate through the rotation of the transmission shaft. This direct drive mode has a short rotation chain and does not need gear transmission and reducer. It solves the problem of the decrease of aiming accuracy caused by gear transmission in the traditional two-dimensional turntable, so it has the advantages of high aiming control accuracy and small weight. Experiments have proved that its aiming control accuracy can reach 10″-20″

Method used

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  • Space integration multifunction high precision dynamic universal rotating mechanism

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specific Embodiment approach 1

[0006] Specific Embodiment 1: This embodiment is a space-integrated multifunctional high-precision dynamic universal rotation mechanism, which includes an azimuth rotation mechanism 1, a pitch rotation mechanism 2 and a reflector 3, and the rotation axis of the azimuth rotation mechanism 1 is aligned with the The axis of rotation of the pitching rotation mechanism 2 is vertically arranged, and the reflective mirrors 3 are two parallel to each other. And it is fixed by the azimuth rotation mechanism 1 and the pitch rotation mechanism 2; the azimuth rotation mechanism 1 includes a transmission shaft 8 in structure, and the transmission shaft 8 is connected with the outer casing 4 through a bearing 7, and the transmission shaft 8 A hollow motor 5 and a code disc 6 are arranged between the outer shell 4, the rotor of the hollow motor 5 is fixedly connected to the transmission shaft 8, and the stator of the hollow motor 5 is fixedly connected to the outer shell 4; the code disc 6 in...

specific Embodiment approach 2

[0008] Embodiment 2: There are two bearings 7 on the azimuth rotation mechanism 1 and the pitch rotation mechanism 2 in this embodiment, and the two bearings 7 are respectively arranged at one end of the hollow motor 5 and the other end of the code disc 6 . The two bearings 7 can make the system compact and concise, and run more smoothly.

specific Embodiment approach 3

[0009] Embodiment 3: The light output diameter of the dynamic universal rotating mechanism described in this embodiment is selected as 100 mm, and the main working environment is a satellite platform. During the satellite's orbit, it has to endure the radiation of the sun and planets and the alternating heating and cooling of space for a long time, which will cause periodic high and low temperature drastic changes. At the same time, the space is an environment of microgravity and high vacuum, which requires anti-cold welding of the turntable material, and special material treatment on the surface, especially requiring light weight, small size, and high rotation accuracy. Therefore, in order to ensure high strength and light weight at the same time, the main parts of the entire turntable And the materials of key parts are all selected with a specific gravity of 4.51g / cm 3 Tc4 (Ti6Al4V) titanium alloy.

[0010] The bearing is also the main and key part of the turntable. The rot...

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Abstract

The present invention belongs to a space integral multifunctional high-accuracy dynamic universal turning mechanism. It relates to a dynamic universal turning mechanism in satellite optical communication. It includes direction turning mechanism and pitch turning mechanism which are identical in structure. They respectively include driving shaft, external shell body and bearing, hollow motor and code disk, the described motor, code disk, driving shaft and external shell body are assembled into one body.

Description

technical field [0001] The invention relates to a dynamic universal rotating mechanism in satellite optical communication. Background technique [0002] In satellite optical communication, the rough pointing mechanism is responsible for the rough alignment of the beam, large-scale scanning capture and rough tracking, and it is the core component of the terminal. The traditional coarse pointing mechanism is installed in a horizontal pitch mode (ground measurement and control and observation devices mostly use this method to turn the platform), and the entire transceiver device moves with the turntable. The disadvantage is that the moment of inertia is large and the thermal control requirements for the satellite platform are high. The current on-board terminals mostly use periscope two-dimensional turntables, which are driven by gear transmission. This method has a small moment of inertia, and most of the terminals are in the satellite cabin, so the requirements for the therm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25J11/00
Inventor 谭立英马晶于思源韩琦琦
Owner HARBIN INST OF TECH