Six-degree-of-freedom low-stress assembly method for spacecraft

An assembly method and a technology with a degree of freedom, which is applied in metal processing, metal processing equipment, manufacturing tools, etc., to achieve low-stress assembly and realize the effect of stress assembly

Active Publication Date: 2022-04-05
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problem of how to adopt a low-stress assembly method to improve the ground assembly performance of a spacecraft, the present invention provides a six-degree-of-freedom low-stress assembly method for a spacecraft

Method used

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  • Six-degree-of-freedom low-stress assembly method for spacecraft
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  • Six-degree-of-freedom low-stress assembly method for spacecraft

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Embodiment

[0075] Embodiment: This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation is given, but the protection scope of the present invention is not limited to the following embodiments.

[0076] Figure 6 Among them, the part to be installed is the joint 23, the part to be assembled is the joint 24, the total weight of the joint 24 is 80kg, and the total mass of the assembled parts is 155kg after the assembly is completed. According to the load capacity of 200kg on a single plane air foot, the frame car 6 is designed Four flat air feet 5 are installed on the bottom surface, and they are arranged at the corners of a rectangle in the range of 1040×650 to increase the span as much as possible and improve the anti-overturning ability of the trolley 6 during assembly.

[0077] Step 1. Before use, it is necessary to supply air to the foot, the air pressure is 0.5Mpa, and the joint 24 is moved to the vicinity of the join...

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Abstract

The invention discloses a six-degree-of-freedom low-stress assembly method for a spacecraft, solves the problem of how to adopt a low-stress assembly method to improve the ground assembly performance of the spacecraft, and belongs to the technical field of spacecraft assembly. The method comprises the steps that S1, parts needing to be assembled are placed on a planar three-degree-of-freedom adjusting mechanism, and a force sensor in a height adjusting mechanism is used for measuring the supporting force xi of each supporting point; s2, measuring the position error of the assembly interface of the part and the mounted part, and adjusting the position and posture of the part by using a planar three-degree-of-freedom adjusting mechanism and four height adjusting mechanisms to enable the axis of the part to coincide with the axis of the assembly interface; and S3, after the part is in contact with the assembly interface, the supporting force delta measured by the force sensor at the moment is obtained, and according to the change of the delta, the position and posture of the part are adjusted through a planar three-degree-of-freedom adjusting mechanism and four height adjusting mechanisms until the difference between the delta and the supporting force measured in S1 meets the error permission requirement.

Description

technical field [0001] The invention relates to a six-degree-of-freedom low-stress assembly method for a spacecraft, which belongs to the field of mechanical engineering. Background technique [0002] The spacecraft has been operating in the space environment of microgravity, high temperature difference, and strong radiation for a long time. If it wants to ensure high reliability and long life of on-orbit work, it must go through precise adjustment on the ground. When assembling on the ground, the gravity environment causes structural deformation of the weak stiffness components of the spacecraft, resulting in additional stress; when serving in space, the weightless environment causes the release of additional stress, and the restoration of structural deformation changes the contact state of the assembly surface, causing changes in the performance of the spacecraft . Therefore, the assembly accuracy and test performance of the spacecraft on the ground cannot fully reflect t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P19/00
Inventor 齐乃明杨云飞刘延芳曾磊齐骥霍明英陈明赵钧
Owner HARBIN INST OF TECH
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