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Liu Xiangfeng
Jiang Simin
Gao Zhi
Hu Rong
Department of
Precision Instruments
and Mechanology,
Tsinghua University,
Beijing 100084, China |
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AUTOMATICALLY OBTAINING THE ASSEMBLY
PARTS AND DIMENSION CHAIN BASED ON FITTING FEATURE*
Abstract: One kind of fitting feature
and information connection among assembly parts is presented. At
first, analyze the topological and fitting connection of parts
that consist of the assembly body. Then create the fitting
connection chain and vector matrix of parts. At last, build the
fitting parts chain that consists of the close assembly loop
based on fitting connection chain and vector matrix of parts.
After obtaining the assembly parts chain, the system can analyze
the fitting parts chain and the dimensional relation of all
fitting parts, and then obtain the dimension chain of the close
assembly loop based on the dimensional relation, the fitting
connection chain and vector matrix of parts. The designer can
uniquely determine the assembly parts chain of product assembly
body by using this method, it is efficient to analyze and obtain
the parts and dimension chain of complex assembly body.
Key words:
Fitting feature Dimension chain Assembly part chain |