Minutes of Funchal Meeting February 20 and 23

Our STEP manufacturing team is now known officially as TC184/SC4 Wg3/T24.
Martin Hardwick is the team leader and the Japanese delegation has been asked
to nominate a deputy team leader.

The following AP's will belong to the team

AP-207 Sheet metal die planning and design
AP-213 NC Process Plans
AP-219 Inspection planning
AP-224 Mechanical Product Definition for Process Planning using machining
features
AP-238 Application Interpreted Model for Computerized Numerical Control
PWI Rapid Prototyping

AP-238 is a tentative number for the CNC model. The actual number may differ
if approval
of the New Work Item is significantly delayed. The current plan is to submit
the NWI
proposal with a CD ballot document describing the mapping tables and AIM
before the
next SC4 meeting in San Francisco in June.

A presentation was given by Professor Suh on requirements for ISO 14649. There
was general agreement with the suggestions given and the team encourages
SC1/Wg7
to add solutions to these requirements to ISO 14649.

Mr. Glantschnig SC1/Wg7 convenor gave presentations on the ISO 14649 models
for
Turning and Wire EDM. An additional presentation on Sink EDM is included in
the ZIP
file, but there was insufficient time to give the presentation in the
meeting. The following
potential issues were identfied:

- The names used for the turning features have been designed to harmonize
with current practice in industry and do not necessarily harmonize with the
turning feature names used in AP-224.

- The Sink EDM model may not have sufficient value to justify standardization
at the present time.

Len Slovensky gave a presentation on the differences between AP-224 and ISO
14649.
During the presentation, the group identified several key differences in the
encoding
of "implict" parameters for the same feature in AP-224 and Part 10 of ISO
14649.
For example an implicit definition for "rectangular pocket" that gives
explicit definitions
for the length and width of the rectangle that defines the pocket.
Currently, ISO 14649
only allows a pocket to be defined by a geometric boundary.

SC1/Wg7 is strongly encouraged to resolve these differences by extending the
definition of the features in Part 10 to include the "implicit" parameters
given in AP-224.
This is considered most important both because of the importance of allowing
features
to be shared between AP-224 and AP-228 and because in most cases the "implicit"
definitions given in AP-224 will make implementation of AP-238 easier for NC
vendors.

David Loffredo gave a presentation on the AIM for AP-238. This was a
continuation of the
presentation given in Charleston. The ARM model developed for 14649 has been
divided
into the following 9 units of functionality.

Measures
Project
Workpiece
Features
Executable
Operation
Toolpath
Milling Process Operations
Milling Cutting Tools

Mappings were demonstrated for each of the units including the Executable
unit where
it was demonstrated that all of the conditionals and cases allowed in the
14649 model
can be mapped and it was remarked that the new constructs proposed by Professor
Suh can also be mapped.

Jonas Norstrom gave a presentation on the Tool Model defined by ISO 13399.
Some issues
and concerns of TC 29 Wg34 were presented. An outline EXPRESS model was also
shown.
All present desired continuing cooperation between SC1/Wg7, SC4/Wg3/T24 and
TC 29/Wg34
so that the models developed by the different groups will inter-operate.

If you wish to make any additions or corrections to these minutes please
send e-mail to the
undersigned. The Manufacturing Task Force shared meeting space with Wg3/T24
and will
issue its own minutes.

Martin Hardwick
Team Leader Wg3/T24

Attendence List
Martin Hardwick STEP Tools USA
David Loffredo STEP Tools USA
Takeshi Isiishiaii Holckaido University Japan
Alan Crawford LSC UK
Carol Tierney General Dynamics USA
King Yee Boeing USA
Yoshiaki Ishikawa IHI Japan
Chiabi Sakamoto Komatsu Engineering Japan
Helium Mak NRC Canada
Suk-Hwan Suh NRL-SNT Postech Korea
Hee-Dang Hong NRL-SNT Postech Korea
Sang U Cheon NRL-SNT Postech Korea
Tashiyuko Shirabe ECOM Japan
Seishiro Takeuchi ECOM Japan
Martin Jones Ausdec Australia
Jonas Nordstrom AB Sandvik Coromant Sweden
Friedrich Glantschnig AMT Switzerland
Olof Nuquist KTH Sweden
Takamasa Tanaka Nissan Japan
Johan Nielsen KTH Sweden
Mike Barter MoD UK
Meinolf Gropper VDMA Germany
Tom Kramer NIST USA
Fred Proctor NIST USA
Len Slovensky Team SCRA USA