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<title>Minutes of Conference Call #17</title>
<u>Attendees</u><br>
Martin Hardwick, STEP Tools, USA <br>
David Loffredo, STEP Tools, USA <br>
Fred Proctor, NIST, USA <br>
Magnus Lundgren, KTH, Sweden<br>
Fiona Zhao, NIST,/New Zealand<br>
Bob Erickson, Pratt & Whitney, USA<br>
David Odendahl, Boeing, USA <br>
Bengt Olsson, Sandvik, Sweden <small><br>
</small>Alain Brail, AlBavis, France <small><br>
</small>Chris Pfeifer CCAT, USA<br>
Larry Maggiano, Mitutoyo, USA<br>
Leon Xu, Boeing, USA <br>
Aydin Nassehi, U.Bath, UK<br>
Vincent Marchini, Ameritech, USA<br>
Thomas Breunung, Walter AG, Germany<br>
Anglea Albus, TDM Systems, Germany<br>
<br>
<u>Apologies for Absence</u><br>
Stephen Newman, U.Bath, UK<br>
Anna Valente, ITIA-CNR, Italy<br>
Sid Venkatesh, Boeing, USA<br>
Ian Stroud, Switzerland<br>
Mikael Hedlind, KTH, Sweden<br>
<br>
NIST and Boeing machined Boxy over the weekend and found the following
new issues:<br>
<br>
1. No entry operations for the pocketing.<br>
2. Insufficient milling to detect tool wear.<br>
3. Peck drilling operations not coded correctly.<br>
4. Operation repeated in drill pattern<br>
5. Workpiece faces not shown in setup coordinates.<br>
<br>
A new version of Boxy has been produced to fix the first two issues. It
has new operation for the tool entry and it mills the pockets using a
shorter tool to get more wear.<br>
<br>
<a class="moz-txt-link-freetext" href="ftp://ftp.steptools.com/private/NIST/Boxy_Part_3-Axis_Machining_7_Setups_v5.238">ftp://ftp.steptools.com/private/NIST/Boxy_Part_3-Axis_Machining_7_Setups_v5.238</a><br>
<br>
The second two issues need to be fixed by correcting the STEP-NC export
dll for Mastercam. <br>
<br>
The last issue triggered some discussion. The STEP-NC Explorer used to
show the coordinates of a face in Part (CAD) coordinates. If it showed
them in Setup coordinates then the operator could use the position of a
face to determine the offset values that should be loaded into the
machine tool registers to set the coordinate system for the machining.
STEP Tools has produced a new version of the STEP-NC Explorer to show
these coordinates.<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.steptools.com/products/stepncmachine/download/">http://www.steptools.com/products/stepncmachine/download/</a><br>
<br>
We discussed the tool requirements model. We determined that the model
needs to include a boolean requirement (yes/no) to indicate if the tool
will be required to perform center drilling. We also decided that the
model needs to be updated to include a recommended number of flutes.<br>
<br>
We briefly reviewed the closed loop machining model. We will update the
model to show the connection between the measurement operations and the
measurement results. We also discussed a proposed scenario for testing
closed loop machining at the demonstrations after NIST. The scenario
calls for a Modular Foundry Language to communicate data between data
assembly, CMM measurement, and CNC machining processes. A prototype for
the language has been developed and put onto the ftp site.<br>
<br>
<a class="moz-txt-link-freetext" href="ftp://ftp.steptools.com/private/NIST/closed_loop/Modular_Foundry_Language.pdf">ftp://ftp.steptools.com/private/NIST/closed_loop/Modular_Foundry_Language.pdf</a><br>
<br>
Boeing will machine boxy again this weekend and give feedback on the
next conference call.<br>
<br>
The next call will be at the regular times on <b>Wednesday May 26</b>.
<br>
<br>
A partial recording of the conference call #16 (before Bengt got on
the train) is now on the ftp site. The full recording of this call is
also below.<br>
<br>
<a class="moz-txt-link-freetext" href="ftp://ftp.steptools.com/private/NIST/stepmanuf_telecon_20100512.wmv">ftp://ftp.steptools.com/private/NIST/stepmanuf_telecon_20100512.wmv</a><br>
<a class="moz-txt-link-freetext" href="ftp://ftp.steptools.com/private/NIST/stepmanuf_telecon_20100519.wmv">ftp://ftp.steptools.com/private/NIST/stepmanuf_telecon_20100519.wmv</a><br>
<br>
Martin Hardwick<br>
Team Leader STEP-Manufacturing<br>
<br>
Action Items<br>
----------------<br>
Fred to update tool requirements model<br>
Fiona to update closed loop machining model<br>
Boeing to machine Boxy<br>
STEP Tools to update the STEP-NC Explorer to show workpiece coordinates
in setup space<br>
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