| 摘要 |
PROBLEM TO BE SOLVED: To provide a dimension measuring method for a bogie frame for railroad as a large-sized structural member to measure a molded work for each bogie frame, whereupon the acceptability is judged through comparison with a design model on a personal computer and the marking-off for the mounting reference point to a machine for mechanical processing is conducted. SOLUTION: The attached illustration shows a measuring model S<SB>1</SB>obtained by plotting on the personal computer the result from measuring the bogie frame three-dimensionally and the design model M<SB>1</SB>of the bogie frame for the railroad. A conversion into a fit model is made by executing the processing to approach the measuring model S<SB>1</SB>to the design model M<SB>1</SB>, and a comparison of the shape accuracy is made in such a way as laying it on the design model, and thereupon a judgement of the acceptability is passed. Marking-off for the mounting reference point to the machine for mechanical processing is conducted for each molded work judged as acceptable. COPYRIGHT: (C)2004,JPO
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