[step-manufacturing] Minutes of May 30 telecon

[Martin Hardwick]

Martin Hardwick, STEP Tools, USA
David Loffredo, STEP Tools, USA
David Odendahl, Boeing, USA
Sid Venkatesh, Boeing, USA
Liming Li, JSL Innovations, USA
Larry Maggiano, Mitutoyo, USA
Bob Ericksson, P&W, USA
Thanh Huyn, Okuma, USA
Ray Admire, QIFsolutions, USA
John Horst, NIST, USA
Gordon Shao, NIST, USA
Paul Huang, ONR, USA
Saur Andreas, DMG Germany
Alain Brail, Airbus (retired), France
Christian Callet, Datakit, France
Pierre Ducheir, CIMPA, France
John Bijnens, KU Leuven, Belgium
Bengt Olssen, Sandvik, Sweden
M.R.IT Amsterdam, Iscar, Israel
Jung-Ho Cho, Hyundai, Korea
Hakchul Lee, Hyundai, Korea
Sergiusz Sobieski, TZ Implements, Poland

We reviewed the minutes of the SC4 meeting in Beijing (attached to 
meeting announcement).

We reviewed a very impressive model for the fixture to be used by DMG at 
IMTS.

We discussed the Implementor's Forum to be started at the Chicago 
meeting in November.

We were challenged to give more thought to the implications for security 
and copyright protection of digital twin machining (attached to these 
minutes).

We discussed the likely low speed of the Internet at IMTS and how to 
synchronize the digital twin displays.

We discussed the review of QIF by SC4. From the perspective of WG15 
everyone needs to understands two points

 1. Why QIF needs to be an ISO standard so it can be used across the
    entire supply chain.
 2. Why STEP and QIF are BOTH needed in the digital twin manufacturing
    framework (ISO 23247).

The digital twin manufacturing framework needs STEP to model the twinned 
products, and it needs QIF to measure their as-manufactured quality. The 
technologies are different. STEP needs to archive its data so it needs 
to be normalized for upward compatibility. QIF needs to explain the 
reasons for a quality evaluation so it needs to be easy to understand 
and process.

SC4 tried and failed to meet both sets of requirements in one data 
protocol when it developed AP219.

STEP and QIF both need PMI and geometry so the overlap needs to be 
managed. Whether this is to be done using mapping tables, spreadsheets 
or implementation methods is TBD.

The next meeting will be held at the regular times on June 6th.

Martin Hardwick
Convener Digital Manufacturing
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