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A method and system for in-situ measurement of the surface accuracy of a composite mold for an antenna reflector

An antenna reflector and mold profile technology, which is applied to measurement devices, instruments, optical devices, etc., can solve the problems of many times of transportation of composite molds, long time-consuming point-by-point touch measurement, and large influence of measurement accuracy errors. Improve data processing efficiency, efficient automatic collection, and the effect of fewer operation steps

Active Publication Date: 2021-08-10
BEIJING SATELLITE MFG FACTORY
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Problems solved by technology

[0004] The technical problem solved by the present invention is to propose a composite mold for antenna reflector in view of the disadvantages of the prior art, such as many times of transporting the composite mold, the measurement accuracy is greatly affected by the error of the shaft system of the machine tool, and the time-consuming point-by-point contact measurement. On-site measurement method and system for surface accuracy

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  • A method and system for in-situ measurement of the surface accuracy of a composite mold for an antenna reflector
  • A method and system for in-situ measurement of the surface accuracy of a composite mold for an antenna reflector
  • A method and system for in-situ measurement of the surface accuracy of a composite mold for an antenna reflector

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Embodiment Construction

[0044] An in-situ measurement method for the surface accuracy of an antenna reflector composite mold, the specific steps are as follows:

[0045] (1) Obtain the three-dimensional model for making the composite material mold to be measured, and establish the workpiece coordinate system of the three-dimensional model, and preset the points to be measured on the surface of the three-dimensional model;

[0046] (2) According to step (1), preset the points to be measured to determine the measurement path of the six-degree-of-freedom robot in the workpiece coordinate system;

[0047] (3) After assembling the composite mold to be measured in place, establish a six-degree-of-freedom robot base coordinate system, obtain the coordinate transformation matrix of the robot base coordinate system and the workpiece coordinate system, and convert the measurement path obtained in step (2) into the base coordinate system The measuring path of the target ball;

[0048] (4) According to the targ...

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Abstract

An on-site measurement method and system for the surface accuracy of antenna reflector composite molds, used for measuring surface accuracy during the machining process of antenna reflector carbon fiber composite molds, and based on the measurement data of laser tracker and robot integrated measurement system. Acquisition and analysis, in view of the disadvantages of the existing technology in the measurement process, such as many times of composite mold handling, and the measurement accuracy is greatly affected by the error of the machine tool shaft system, solves the handling problem between composite mold processing and testing, and uses a machine tool independent of the machine tool The measurement equipment makes the measurement and evaluation of the composite mold surface objective and true, and solves the problem of long time-consuming point-by-point contact measurement through the efficient automatic sampling of the parabolic surface point cloud of the mold.

Description

technical field [0001] The invention relates to an in-situ measurement method and system for the surface precision of an antenna reflector composite mold, and belongs to the field of precision measurement. Background technique [0002] With the large-aperture satellite antenna system greatly improving the profile accuracy requirements of the profile antenna reflector, the requirements for its molding mold are also increased accordingly, and the thermophysical properties of composite molds and antenna reflector products are naturally consistent It is the preferred mold for forming large-diameter antenna reflectors. The development method of large-diameter composite molds is mainly through direct molding of resin master molds. After the molding accuracy reaches 0.05mm RMS, it is difficult to further improve. Therefore, it is necessary to further improve the surface accuracy of composite molds through grinding and polishing. The measurement data guides the grinding and polishi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00
CPCG01B11/005G01B11/007
Inventor 赵婕于望竹蔡子慧杨继之倪爱晶刘佳郭庆黄羚王小瑞杨纯
Owner BEIJING SATELLITE MFG FACTORY
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