Method of the Developing Part Specifications from Assembly Drawing of Machine Unit Expression of Assembly Data and its Application to the Automatic Determination of Assembly/Disassembly Sequence

• Published in: Journal of the Japan Society of Precision Engineering Vol. 51; no. 2; pp. 359 - 365
• Main Authors: INOUE, Kuniko, SEKIGUCHI, Hiroshi, KOJIMA, Toshio, HONDA, Tsunenori
• Format: Journal Article
• Language: Japanese
• Published: The Japan Society for Precision Engineering 05.02.1985
• Subjects: assembly; assembly data; assembly sequence; assembly structure; CAD; data model; disassembly; disassembly sequence
• ISSN: 0374-3543
• DOI: 10.2493/jjspe1933.51.359

In the course of developing part specifications from assembly drawing, several operations such as the verification of assembly drawing, the examination of the possibility of assembly, the determination of sequence of assembly/disassembly, and the distribution of tolerance are to be executed. To aid this process, which is carried out by computer, the assembly structure of parts should be formulated as a data model. This paper describes the following two subjects concerning the above :(i) a data model of assembly structure data by means of connective relations between the parts of functional machine units with their properties;(ii) an algorithm on the sequence of assembly/disassembly of the functional machine units, according to the priority of the connective relations, assuming that the sequence of assembly is the reverse to that of disassembly. The data model and the algorithm of the sequence of assembly are proved to be practically effective through case studies of the functional units of machine tools.