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Attendees
<br>
--------------
<br>
Martin Hardwick, STEP Tools, USA
<br>
David Loffredo, STEP Tools, USA
<br>
Mikael Hedlind, Scania, Sweden
<br>
Mike Restal, Sandvik, USA
<br>
Kevin Warren, Sandvik, USA
<br>
Vincent Marchini, Ameritech, USA
<br>
Fred Proctor, NIST, USA
<br>
Sid Venkatesh, Boeing, USA
<br>
David Odendahl, Boeing, USA
<br>
Leon Xu, Boeing, USA<br>
Robert Erickson, Pratt and Whitney, USA
<br>
Thomas Raun, ISCAR, USA
<br>
Doron Cohen, ISCAR, Isreal<br>
Ian Stroud, EPFL, Switzerland
<br>
Alain Brail, Airbus (retired), France
<br>
Yin Lampard Zhang, University of Auckland, New Zealand<br>
<br>
Due to circumstances beyond our control (an extremely busy summer at
STEP Tools and Boeing), the schedule for the CAM Tooling pilot has
slipped. The first test part will now be delivered to the cutting
tool vendors for evaluation on September 16th. Apologies to all for
this delay. A new schedule is being published and will be shared
with the participants.<br>
<br>
We discussed AP238 Edition 2. There was agreement that work should
start now that the Draft International Standard for AP242 is being
balloted. <br>
<br>
The discussion resolved into 5 content opportunities and 3
structural issues.<br>
<br>
For the content we agreed on the following:<br>
-------------------------------------------------------------<br>
1. Add the functionality enhancements computed during the AP238
Edition 1 testing. These include the cross section data for tool
wear and dynamic feed speed control, the via points for high speed
milling, the reference direction for tape laying, the workpieces for
volume removal and the selection flag for executables.<br>
<a class="moz-txt-link-freetext" href="ftp://www.steptools.com/private/AP238e2/ap238_e2_20100618.ppt">ftp://www.steptools.com/private/AP238e2/ap238_e2_20100618.ppt</a><br>
<a class="moz-txt-link-freetext" href="ftp://www.steptools.com/private/AP238e2/STEP_NC_operation_complement.pdf">ftp://www.steptools.com/private/AP238e2/STEP_NC_operation_complement.pdf</a><br>
<br>
2. Harmonize with AP242. Update the representation for tolerances to
use the new AP242 method for connecting faces, consider adopting the
same method for the feature faces, add the new presentation and
kinematic information.<br>
For a demonstration see
<a class="moz-txt-link-freetext" href="http://www.steptools.com/demos/nc-frames.html?moldy/">http://www.steptools.com/demos/nc-frames.html?moldy/</a><br>
<br>
3. Fully integrate with ISO 13399 so that the tool properties can be
associated with the tool geometry.<br>
For a partial demonstration (tool geometry, presentation and
assembly data but not the properties) see:
<a class="moz-txt-link-freetext" href="http://www.steptools.com/demos/asm-frames.html?cutter.xml">http://www.steptools.com/demos/asm-frames.html?cutter.xml</a><br>
<br>
4. Integrate the key machine tool attributes of ASME B5.59 with the
kinematics of AP242 so that machining programs can be automatically
associated with workpieces, cutting tools and fixtures in a drag and
drop paradigm.<br>
For a demonstration of the power of the drag and drop paradigm see:
<span lang="EN-US"><a href="http://www.Step3d.com">www.Step3d.com</a></span><br>
<br>
5. Harmonize with ISO 14649 Edition 2. There are new processes,
tools and operations to consider.<br>
<br>
The discussion on the structure was more open ended:<br>
-----------------------------------------------------------------------------------<br>
6. Business Object Models and Part 21 Edition 3. A growing number of
web sites are able to support the display and manipulation of STEP
data. With the appropriate semantics we should be able to enable
these sites to share a process defined at one site with the cutting
tools defined at another site, on a workpiece defined at yet another
site, with a machine tool defined in the shop of the first site. <br>
<a class="moz-txt-link-freetext" href="ftp://www.steptools.com/private/AP238e2/P21e3_one_slide.pptx">ftp://www.steptools.com/private/AP238e2/P21e3_one_slide.pptx</a><br>
<br>
7. Make the model more extensible so that end users can add new
types of tools, operations and features. The number of operations
defined for STEP-NC is increasing with ISO 14649 Edition 2 and will
grow in the future. A methodology that allows new operations to be
defined without requiring a new edition of the standard will allow
more applications to be satisfied more quickly. If we use the Gears
methodology then the new operations can be added without impacting
existing systems and translators. Applications that understand the
new operations will be able to process the data efficiently using
the third level semantics while regular applications will be able to
process the data on the second level understood by all systems.<br>
<br>
8. Adopt the most efficient method for documenting the new standard.
The efficiency should respect the requirements of both the standards
writer and the standards implementor. Modularity can make the job of
the standards writer much easier at the expense of confusing the
standards implementor with an endless series of hyper links that
never seem to reach closure. For the standards implementor the HTML
in AP214 is the easiest to follow, and the standalone PDF
documentation used for AP238 Edition 1 and other AP's is also good.
However, AP238 Edition 2 will build significantly on AP242 so some
kind of integration may be very helpful for the standards writer.<br>
<br>
Many apologies for not making a recording of this conference call.
The next conference call will be held at the regular times on
Wednesday August 28th.<br>
<br>
Action Items<br>
-----------------<br>
Martin Hardwick to make an updated schedule for the CAM Tooling
pilot<br>
<br>
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