6RRRPRR-based six-degree-of-freedom high-precision adjusting and positioning system

A positioning system, high-precision technology, applied in the field of positioning systems, to achieve the effect of simplifying structural design, low friction, and ensuring structural accuracy

Inactive Publication Date: 2017-06-23
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the six-degree-of-freedom high-precision adjustment system, the main technical difficulties in applying it to the adjustment of the position and orienta

Method used

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  • 6RRRPRR-based six-degree-of-freedom high-precision adjusting and positioning system
  • 6RRRPRR-based six-degree-of-freedom high-precision adjusting and positioning system
  • 6RRRPRR-based six-degree-of-freedom high-precision adjusting and positioning system

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] to combine Figures 1 to 5 To illustrate this embodiment, the six-degree-of-freedom high-precision adjustment and positioning system based on 6RRRPRR of the present invention includes: a moving platform 1, a fixed platform 2 and six support rods 3, and the moving platform 1 and the fixed platform 2 pass through six symmetrical positions from top to bottom. The distributed support rods 3 are connected to each other. The specific installation method is that the moving platform 1, the fixed platform 2 and the support rod 3 are respectively connected by hinges, and the hinge points of the moving platform 1 and the fixed platform 2 are distributed on two different upper and lower circles. P i The connecting lines form a symmetrical hexagon with 6 lower hinge points B i The connecting lines also form a symmetrical hexagon, and the connecting lines between the mid...

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Abstract

The invention relates to a 6RRRPRR-based six-degree-of-freedom high-precision adjusting and positioning system the mechanical structure of which is composed of a stationary fixed platform, a movable moving platform and six supporting rods in linear motion. Each support rod is composed of rotary hinges for connecting the moving platform with the fixed platform and a linear actuator. The rotary hinges are offset universal hinges and are connected with the moving and fixed platforms through flanges. The linear actuators achieve linear motion by using ball screw pairs. Such design can provide axial rotational freedom by using the relative rotation between screws and nuts so as to meet a degree of freedom distribution relation, prevent a guide mechanism, simplify structural design and improve the motion accuracy of the support rods. The stretch and retraction of the six linear support rods and the rotation of the offset universal hinges achieve the six-degree-of-freedom high-precision adjustment and positioning of the moving platform.

Description

technical field [0001] The invention relates to a positioning system, in particular to a six-degree-of-freedom high-precision adjustment and positioning system based on 6RRRPRR, which can be used to precisely adjust the pose of an optical component in a large optical load in space. Background technique [0002] The precision adjustment technology of optical components in large-scale space cameras is one of the key technologies for high-quality imaging. Due to the impact of changes in the loading conditions (such as shock, vibration, overload, etc.) during launch and the environmental conditions (such as pressure, temperature, microgravity, etc.) , leading to a decrease in image quality. In order to ensure the imaging quality, it is necessary to correct the pose variation of the optical components in the space camera. Therefore, it is very necessary to design an adjustment mechanism with high precision and high stability. [0003] Stewart-type six-dimensional precision adj...

Claims

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Application Information

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IPC IPC(8): G05D3/12
CPCG05D3/12
Inventor 徐振邦韩春杨于鹏于阳贺帅李昂吴清文
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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