Open Access
ARTICLE
Automated Dimensioning Method of Engineering Drawings for Mechanical Products Based on Curve Chain
Gui Li1, *, Peng Yang2
1 Key Laboratory of Metallurgical Equipment and Control Technology, Ministry of Education, Wuhan University of Science and Technology, Wuhan, 430081, China.
2 Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China.
* Corresponding Author: Gui Li. Email: .
Computers, Materials & Continua 2020, 65(1), 847-863. https://doi.org/10.32604/cmc.2020.011398
Received 06 May 2020; Accepted 27 May 2020; Issue published 23 July 2020
Abstract
An automated method based on the curve chain was proposed for dimensioning
of engineering drawings for the mechanical products. According to the internal relation
between the features of 3D model feature and elements of 2D drawing, the curve chain was
established to reflect the geometric topological structure between the elements. It divides
the dimensions into the absolute dimensions within the cure chain and the relative
dimensions between the curve chains. The parallel and lengthy relationship between the
drawing elements of the constructed X and Y parallel matrix was solved to remove
redundant elements in the curve chain and labeled the absolute dimensions of the remaining
valid elements. The average minimum weight coefficient was introduced to judge the
dependence on the relative dimensions between curve chains. Through the analysis of the
overlap between the circular rectangular areas, including all the absolute dimensions of the
curve chains, overlapping curve chains were merged, and their dimensions were rearranged
to avoid the cross interference between them. The method was seamlessly integrated into
the drafting module of product design software NX, and it developed an automated
dimensioning system. The examples show that the system has excellent interactivity and
robustness in the dimensioning of product engineering drawings. The dimension
information is complete, accurate and reliable.
Keywords
Cite This Article
G. Li and P. Yang, "Automated dimensioning method of engineering drawings for mechanical products based on curve chain,"
Computers, Materials & Continua, vol. 65, no.1, pp. 847–863, 2020.