Comparison of ISO 10303 Part 47 Draft with ANSI and ISO Tolerancing Standards forHarmonization and Completion of Part 47. National PDES Testbed

摘要

The report provides an evaluation of the ISO 10303 Part 47 draft with respect toANSI and ISO tolerancing standards. It is expected that the information contained in the report will contribute toward the completion and harmonization of Part 47. The document is the result of a comparison of the Part 47 draft with existing and developing U.S. and international dimensioning and tolerancing standards. Comparison results are summarized in tables in each section. The comparison of the Part 47 draft with other standards is made in basic tolerancing principles, size tolerance, datum and datum establishment, and geometric tolerances specified in standards. Recommendations for additions and modifications of Part 47 are at the end of each section. The objective is to have Part 47 completely cover the basic principles, concepts, and geometric tolerancing methods specified in ANSI and ISO standards.