New interesting concepts from ISO TC 213 ACMC Annual General Meeting June 14. – Ottawa, Canada Johan Dovmark, Novo-Nordisk - Medical Systems

ISO/TC 213 Dimensional and geometrical product specifications and verification 14. June 1996

Joint Harmonization Group March 1993 ISO/TC 3 (D)  ISO/TC 10/SC 5 (USSR) (USA) ISO/TC 57

ISO TC 213-SCOPE Standardization in the field of geometrical product specifications (GPS) i.e. macro- and microgeometry specifications covering dimensional and geometrical tolerancing, surface properties and the related verification principles, measuring equipment and calibration requirements including the uncertainty of dimensional and geometrical measurements. The standardization includes the basic layout and explanation of drawing indications (symbols). Note: The definition of the specific proportions and dimensions of drawing indications (symbols) and their execution are excluded from the scope.

ISO/TC 213- Structure

ISO/TC 213-WG4 U E  U T Uncertainty of Measurement and decision rules ISO14253 part

PUMA Measuring Task Target uncertainty U T Principle of measurement Measurement method Measurement procedure Measurement conditions Assumptions knoledge etc. Uncertainty modelling Uncertainty components U EN = k x u U EN  U T Change of U EN possible Change principle of measurement Change conditions and/or procedure and/or methode Change assumptions and/or modelling and/or improve knowledge Change measuring task or target uncertainty Change of U EN possible Change of U EN possible Change of U EN possible Adequate measurement prcedure No adequate measurement procedure possible Uncertainty Budget Y Y Y Y Y N N N N N

Types of Uncertainty n Correlation-uncertainty n Specification-uncertainty n Measurement-uncertainty

Vagifem

Types of Uncertainty n Correlation-uncertainty n Specification-uncertainty n Measurement-uncertainty

Functional needs F = N

GPS Geometrical Product Specification D 0,01

Correlation ,018,028,038,048,058,068,078,088,09 8,1 Diameter, D [mm] Force, F [N]

Types of Uncertainty n Correlation-uncertainty n Specification-uncertainty n Measurement-uncertainty

Specification uncertainty D ? LSLUSL Specification -uncertainty

Types of Uncertainty n Correlation-uncertainty n Specification-uncertainty n Measurement-uncertainty

Measurement Uncertainty LSLUSL D

Types of Uncertainty n Correlation-uncertainty n Specification-uncertainty n Measurement-uncertainty U Compliance Verification SpecificationMeasurement

ISO/TC 213-WG6 General Requirements for GPS-measuring equipment ISO & ISO14978 General Consepts & Requirements ISO14978 General Consepts & Requirements

ISO/TC 213-WG12 Size ISO

ISO/TC 213-WG14 ISO Vertical GPS principles

Reminder - Structure - Example - Conclusion Points of view (Part 1) Part of Set of operations on Perfect shape Part of Set of operations on Filtration of Material Respecting constraints with respect to Representing Part of Imagination of the interface Filtration of Part of Set of operations on Filtration of Measurement Respecting constraints with respect to Material Representing NominalSpecificationVerification

WG14 - Vertical GPS principles

ISO Specification:

Operations - DATUM Partition: Association:

Operations – TOLERANCED FEATUR Partition: Association: Construction:Partition: Association:Collection:

Operations Comparison Result Specification

ISO/TC 213-Goals Harmonize terminology Make fundamental rules Make clear definition – computerize-able Develop toolboxes for expression of functional needs Close gaps and Eliminate contradictions GPS ID/code Definition of Tolerance, t Definition of Feature- characteristic Assesment of Deviations – comparison with t Requirements Measuring equipment Requirements Calibration & Standards

The New GPS matrix

ISO/TC 213-Goals Harmonize terminology Make fundamental rules Make clear definition - computarizeable Develop tollboxes for expresion of functional needs Close gaps and Eleminate contradictions Reduce specification unceratainty LSLUSL Specification -uncertainty Default?

ISO/TC 213-Main Goals 1.To reduce the Correlation Uncertainty a)Develop the necessary functional related tool 2.To reduce the Specification Uncertainty a)Defining operators b)Develop clear and unambiguous rules c)Stating default rules 3.To enrich the improved GPS-Language a)Strive to keep it as simple as possible

Important Standards: published & drafts Repair work  1101 GD&T  2692 MMC  5458 Position  Datum's  Datum's  Diameter  8062 Mouldings  Mouldings  4x2 Form standards  11 x surface roughness News  – 1 & 2  – 1 & 2  New concepts  – 1 & 2   14978