LEAK GENERATION RATE ESTIMATING METHOD AND LEAK GENERATION RATE ESTIMATING DEVICE FOR CASTING, STORAGE MEDIUM STORED WITH LEAK GENERATION RATE ESTIMATING PROGRAM, DESIGNING METHOD AND PRODUCTION METHOD FOR CASTING, AND AUTOMATIC TRANSMISSION CASE PRODUCED BY THE LEAK GENERATION RATE ESTIMATING DEVICE FOR CASTING

PROBLEM TO BE SOLVED: To provide a leak generation rate estimating method and a leak generation rate estimating device for a casting capable of swiftly designing a casting having high reliability, to provide a storage medium stored with a leak generation rate estimating program, to provide a designi...

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Bibliographic Details
Main Authors OBARA AKIHIRO, SHIRAKI MASAAKI, YAMAMOTO KOJI, HIRAMATSU YOSHIFUMI
Format Patent
LanguageEnglish
Published 13.09.2007
Subjects
CALCULATING
CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PERFORMING OPERATIONS
PHYSICS
POWDER METALLURGY
TRANSPORTING
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Summary:PROBLEM TO BE SOLVED: To provide a leak generation rate estimating method and a leak generation rate estimating device for a casting capable of swiftly designing a casting having high reliability, to provide a storage medium stored with a leak generation rate estimating program, to provide a designing method and a production method for a casting, and to provide an automatic transmission case produced by the leak generation rate estimating device for a casting. SOLUTION: The leak generation rate estimating method for a casting is provided with: object extraction steps S1, S2 where a combination of a pair of holes or a combination of a hole and the cast edge face in a casting is extracted from three-dimensional shape data showing three-dimensional shape; characteristic value acquisition steps S3, S5, S6 where, based on the shape of the cast body present in between a pair of the holes or between the hole and the cast edge face which has been extracted, characteristic value shown by the shape is calculated; a generation rate calculation step S9 where, between a pair of the holes or between the hole and the cast edge face, the leak generation rate of a liquid caused by a defect in casting is calculated from the characteristic value; and a result extraction step S10 where a combination having a high leak generation rate is extracted. COPYRIGHT: (C)2007,JPO&INPIT
Bibliography:Application Number: JP20070019847