CN-122023743-A - Spacecraft labeling system and method for digitalized three-dimensional factory setting

CN122023743ACN 122023743 ACN122023743 ACN 122023743ACN-122023743-A

Abstract

The application provides a spacecraft labeling system and method for digitalized three-dimensional factory discharge, belongs to the field of computer aided design and manufacture, and aims to solve the problems that an existing three-dimensional labeling system is poor in model readability and easy to generate ambiguity due to the fact that auxiliary geometric elements such as a central line are absent. The system comprises six modules of marking environment management, dimension marking, surface roughness marking, form and position tolerance marking, technical requirement writing and quick line supplementing. Correspondingly, the method comprises the steps of setting a labeling environment, executing various labeling, supplementing a missing center line or a missing dimension line in the model and the like. The method is characterized in that key auxiliary elements missing in the three-dimensional view are supplemented through the rapid line supplementing module, so that pain points which are not clearly expressed in the existing scheme are solved, the definition of the three-dimensional model is comparable to that of a traditional two-dimensional drawing, the homology of full-flow data is realized, and the development efficiency is improved.

Inventors

DING ZHIBING
ZHANG YONGTAO
FENG YANJUN
CHEN QIANG
LEI YAN
ZHANG LINGYAN
LI CHEN
YUAN JINRU

Assignees

上海卫星工程研究所

Dates

Publication Date: 20260512
Application Date: 20260104

Claims (10)

1. A spacecraft three-dimensional digital labeling system, wherein the system is deployed in a computer aided design CAD software environment, comprising: The marking environment management module is used for setting a marking view, a view direction, a marking style and a cutting plane for the three-dimensional marking process; The dimension marking module is used for carrying out three-dimensional marking of dimensions, dimension chains, precision and tolerance on the three-dimensional model; the surface roughness marking module is used for carrying out three-dimensional marking on the surface of the three-dimensional model; The form and position tolerance labeling module is used for carrying out three-dimensional labeling of form and position tolerance on the characteristics of the three-dimensional model; a technical requirement writing module for writing and managing technical requirements in the three-dimensional model; And the quick line supplementing module is used for supplementing the missing central line or dimension line in the three-dimensional model in the three-dimensional annotation view.
2. The spacecraft three-dimensional digital labeling system of claim 1, wherein the centerline or dimension line supplemented by the fast line supplementing module is an auxiliary geometric element not displayed by the model itself, the auxiliary geometric element further comprising a contour line or a symmetrical centerline.
3. The spacecraft three-dimensional digital labeling system of claim 2, wherein the fast patch module is further configured to implement the batch generation of the auxiliary geometric elements by automatically identifying a revolution body feature or a symmetry feature of the three-dimensional model.
4. The spacecraft three-dimensional digital labeling system of claim 1, wherein said technical requirements writing module comprises a technical requirements database comprising a personal library and an enterprise library for storing and managing standard technical requirements; the technical requirement writing module is also used for calling the standard technical requirements stored in the technical requirement database through the index function and editing the called standard technical requirements.
5. The spacecraft three-dimensional digital labeling system of claim 4, wherein the technical requirement writing module is integrated with a rules engine; The rule engine is used for automatically recommending standard technical requirements in the technical requirement database according to preset attributes of the three-dimensional model.
6. The spacecraft three-dimensional digital labeling system of claim 1, wherein the dimension labeling module is configured to directly extract geometric dimensions of the three-dimensional model for labeling.
7. The spacecraft three-dimensional digital labeling system of claim 1, wherein the surface roughness labeling module provides a surface roughness labeling symbol that meets national standards.
8. The spacecraft three-dimensional digital labeling system of claim 1, wherein the form and position tolerance labeling module supports rapid creation and referencing of fiducials.
9. A method for three-dimensional digital labeling of a spacecraft, the method being performed in a computer aided design CAD software environment, comprising the steps of: Setting a labeling view, a view direction, a labeling style and a section for the three-dimensional labeling process; performing three-dimensional labeling of dimensions, dimension chains, precision and tolerance on the three-dimensional model; carrying out three-dimensional labeling of surface roughness on the surface of the three-dimensional model; performing three-dimensional labeling of form and position tolerance on the characteristics of the three-dimensional model; writing and managing technical requirements in the three-dimensional model; And supplementing the missing center line or dimension line in the three-dimensional model in the three-dimensional labeling view.
10. The method for three-dimensional digital labeling of spacecraft according to claim 9, characterized in that said step of supplementing a centerline or a dimension line comprises in particular: automatically identifying the revolution body characteristics or the symmetrical characteristics of the three-dimensional model; A centerline is generated for the identified feature lot.

Description

Spacecraft labeling system and method for digitalized three-dimensional factory setting Technical Field The invention relates to the field of computer aided design and manufacture, in particular to a spacecraft labeling system and method for digitalized three-dimensional factory setting. Background In the field of modern manufacturing, in particular high-end manufacturing such as spacecraft design, model-based definition has become a mainstream trend of technical development, aiming at replacing the traditional two-dimensional engineering drawings by directly attaching all product manufacturing information to a three-dimensional model. The traditional design mode of three-dimensional modeling and two-dimensional drawing has a plurality of defects, for example, after a designer finishes a three-dimensional model, a great amount of effort is required to convert the three-dimensional model into the two-dimensional drawing, and the process is huge in workload and extremely easy to introduce human errors due to information transcription. Meanwhile, the two-dimensional drawing is difficult to intuitively and completely express the three-dimensional space relation and design intention of the complex product, so that the downstream process, manufacturing and final assembly units need to spend extra time for drawing digestion and three-dimensional model reconstruction, and development efficiency and communication accuracy are seriously affected. To solve the above problems, various three-dimensional process design platforms have been developed in the prior art. The platforms generally integrate functional modules such as view management, dimension marking, form and position tolerance marking, surface roughness marking, technical requirement management and the like, so that most marking work in a three-dimensional environment is realized, and an important step is provided for paperless design. However, these existing three-dimensional labeling systems still have significant drawbacks in practical applications, in that in the generated three-dimensional view, critical auxiliary geometric elements in the conventional two-dimensional drawing, such as the center line of the hole system, the symmetric center line of the symmetric structure, and the critical contour lines, are often missing. The method leads to the fact that when facing complex structures, the readability of the pure three-dimensional model is reduced, understanding ambiguity is easy to generate, the requirements of definition and no ambiguity required by replacing two-dimensional drawings are not completely met, and thorough implementation of the full three-dimensional digitizing process is hindered. Disclosure of Invention The invention aims to provide a spacecraft labeling system and method for digitizing a three-dimensional factory, and aims to solve the problems of poor readability and easy ambiguity caused by the lack of auxiliary geometric elements in the existing three-dimensional labeling system, so that a full three-dimensional digitizing solution which has comprehensive functions and clear expression and can completely replace a two-dimensional drawing is provided. The spacecraft labeling system comprises a labeling environment management module, a dimension labeling module, a surface roughness labeling module, a form and position tolerance labeling module, a technical requirement writing module and a quick line supplementing module, wherein the labeling environment management module is used for setting a labeling view, a view direction, a labeling pattern and a sectioning plane for a three-dimensional labeling process, the dimension labeling module is used for carrying out three-dimensional labeling of dimensions, dimension chains, precision and tolerance on a three-dimensional model, the surface roughness labeling module is used for carrying out three-dimensional labeling of surface roughness on the surface of the three-dimensional model, the form and position tolerance labeling module is used for carrying out three-dimensional labeling of form and position tolerance on the characteristics of the three-dimensional model, the technical requirement writing module is used for writing and managing technical requirements in the three-dimensional model, and the quick line supplementing module is used for supplementing a missing central line or dimension line in the three-dimensional model in the three-dimensional labeling view. Optionally, the center line or the dimension line supplemented by the rapid line supplementing module is an auxiliary geometric element which is not displayed by the model, and the auxiliary geometric element further comprises a contour line or a symmetrical center line. Optionally, the rapid line supplementing module is further configured to automatically identify a revolution body feature or a symmetric feature of the three-dimensional model, so as to implement batch generation of the auxiliary geometric elements. Optionall