[step-manufacturing] Minutes of 5th CCAT conference call

[Martin Hardwick]

Attendees
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Alain Brail, Airbus, France
Bengt Olsson, Sandvik
Mikael Hedlind, KTH
Magnus Lundgren, KTH
Martin Hardwick, STEP Tools, Inc.
Leon Xu, Boeing
Fred Proctor, NIST
Sid Venkatesh, Boeing
Larry Maggiano, Mitutoyo
Peter Klein, Concepts Nrec
Xia Li, RPI


Apologies for absence
--------------------------------
Matthew Lloyd, CCAT
David Odendahl, Boeing


A material removal simulation has been made for the Impeller but 
faces are still missing so work is continuing on the faceting 
algorithms. The goal for the next conference call is to fix the 
remaining faceting issues and to produce a first cross section file 
for the feed speed optimization code.

Peter Klein of Concept Nrec joined the conference call at the 
invitation of Sandvik. Concepts Nrec was the data source for the 
material removal tool paths for the Impeller. They can also generate 
tool paths to probe nominal points on the Impeller. They will 
generate such a file using the Siemens 840D syntax and the MEASCYCLE 
macro. STEP Tools will read this data and create STEP-NC probing 
operations for the Impeller.

There was a continuing discussion on how to measure the impeller. 
CCAT was not able to join the call because of a conflict with the 
Eastec show but off line was able to report that FARO and Romer arms 
are very popular with its aero engine suppliers.  Concepts Nrec has 
seen several methods used to measure impellers including on-machine 
probing, robot arms and some scanning with on-machine probing being 
the most popular method.

There was a discussion on the organization of the demonstration. 
Titanium alloys are quite expensive and the time to machine all the 
part is a minimum of 3.2 hours without any time for inspection. It 
was agreed that the demonstration should machine only one of the 
blades to conserve resources and time.

There was a discussion on the corrigendum for AP-238 with no new 
items being suggested. Feedback is being sought on whether the 
corrigendum should be submitted immediately or whether we should wait 
until the combined SC1/SC4 meeting in Korea in the Fall.

The next conference call will be on Wednesday June 4.

Action items
------------------
Peter Klein to deliver probing tool paths to Sandvik and STEP Tools.
Martin Hardwick to convert the probing tool paths into AP-238.