TY - EJOU
AU - Li, Gui
AU - Yang, Peng
TI - Automated Dimensioning Method of Engineering Drawings for Mechanical Products Based on Curve Chain
T2 - Computers, Materials \& Continua
PY - 2020
VL - 65
IS - 1
SN - 1546-2226
AB - 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.
KW - Automated dimensioning
KW - engineering drawing
KW - curve chain
KW - mechanical product
KW - weight coefficient
DO - 10.32604/cmc.2020.011398