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Industrial Data Implementors Forum

Industrial Data Implementors Forum. Martin Hardwick STEP Tools, Inc. June 13, 2001 San Francisco, USA. The BIG Issues. STEP-NC Conformance Testing Demonstrations What to do AP Interoperability Unified PDM Schema Modularity Upwards Compatibility Changes in Progress

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Industrial Data Implementors Forum

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  1. Industrial Data Implementors Forum Martin Hardwick STEP Tools, Inc. June 13, 2001 San Francisco, USA

  2. The BIG Issues • STEP-NC Conformance Testing • Demonstrations • What to do • AP Interoperability • Unified PDM Schema • Modularity • Upwards Compatibility • Changes in Progress • Part 21 Amendment – Multiple Data Sections • Short names • Solid Model History • STEP and XML • What to do

  3. STEP-NC Conformance Testing • First goal is to select Usage Scenarios • Realism vs formal test cases • Formal test cases can seem simplistic to management (we don’t’ make that) • CAM conformance • Check that CAM system can create valid part program to make the part on a reference machine • Also translate to ISO 6983 for software verification

  4. CAM Conformance Test Test Spec CAM data Test Case STEP NC Checker CAM CAD Test Spec Geometry STEP NC G codes Solid model comparison NCverification CAD Solid Model

  5. CNC Conformance Testing • Is the part machined correctly for the given input? • Standard artifact can be provided; CAD files and drawings may suffice • Additionally, a suite of STEP NC files can be provided that test exceptions that should be caught by the CNC • ISO 10303/21 syntax errors • STEP NC data structure errors • Bad data or “Widow maker” files STEP NC

  6. PDM Issues • How to replace PDM Schema with 60 PDM modules? • Rules for short to long form generation may be vague • Is data exchange between different module subsets meaningful?

  7. Measuring XML • AP-203 Part 21 file for a conic (or other simple shape) • PDM Schema file for a simple assembly • Will send schemas and data to • step-imp@steptools.com • xmlsc4@nist.gov • Request the Part 28 teams translate to • LB • OSEB • ETEB • Other • Will post results to implementor’s forum web site • Will measure file size • Want suggestions for other meaningful measures • Will gather and discuss at next SC4 meeting

  8. Parametrics and Construction History • Parametrics integrated resource (Part 108) nearly ready for CD • Construction History Test case being implemented • Part 108 Constraints need to be added to test case • Small number of design features models have been developed for the test part (Lblock part) • Need resources to develop additional design feature models • Implementors Guide for Construction History expected to be circulated shortly

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