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ISO STEP Meeting. <br>
Stockholm, Sweden<br>
June 11th to 15th<br>
<br>
Attendees<br>
<br>
<table style="border-collapse: collapse;width:469pt" border="0"
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<tr style="height:15.0pt" height="20">
<td class="xl65" style="height:15.0pt;width:56pt" height="20"
width="75">First name</td>
<td class="xl65" style="width:57pt" width="76">Last name</td>
<td class="xl65" style="width:233pt" width="311">Organisation</td>
<td class="xl65" style="width:88pt" width="117">Country</td>
<td style="width:35pt" width="47"><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Alain</td>
<td>Brail</td>
<td>Albavis</td>
<td>France</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Alexandre</td>
<td>Fournier</td>
<td>Boost-Conseil</td>
<td>France</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Patrick</td>
<td>Marchand</td>
<td>CETIM</td>
<td>France</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Lothar</td>
<td>Klein</td>
<td>LKSoftWare GmbH</td>
<td>Germany</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Doron</td>
<td>Cohen</td>
<td>ISCAR LTD.</td>
<td>Israel</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Fumiki</td>
<td>Tanaka</td>
<td>Hokkaido University</td>
<td>Japan</td>
<td>online</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Dong Hoon</td>
<td>Lee</td>
<td>Korea Database Agency</td>
<td>Republic of Korea</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Sung Joon</td>
<td>Lim</td>
<td>Korea Database Agency</td>
<td>Republic of Korea</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Jonas</td>
<td>Nordström</td>
<td>Jonor</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Andreas</td>
<td>Archenti</td>
<td>KTH Royal Institute of Technology</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Christer</td>
<td>Wickman</td>
<td>KTH Royal Institute of Technology</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Danfang</td>
<td>Chen</td>
<td>KTH Royal Institute of Technology</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Gunilla</td>
<td>Sivard</td>
<td>KTH Royal Institute of Technology</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Jonny</td>
<td>Gustafsson</td>
<td>KTH Royal Institute of Technology</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Lars</td>
<td>Lindberg</td>
<td>KTH Royal Institute of Technology</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Linus</td>
<td>Persson</td>
<td>KTH Royal Institute of Technology</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Magnus</td>
<td>Lundgren</td>
<td>KTH Royal Institute of Technology</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Mikael</td>
<td>Hedlind</td>
<td>KTH Royal Institute of Technology</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Qiuling</td>
<td>Huang</td>
<td>KTH Royal Institute of Technology</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Torsten</td>
<td>Kjellberg</td>
<td>KTH Royal Institute of Technology</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Yujiang</td>
<td>Li</td>
<td>KTH Royal Institute of Technology</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Bengt</td>
<td>Olsson</td>
<td>Sandvik Coromant</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Linda</td>
<td>Estman</td>
<td>Sandvik Coromant</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Susanne</td>
<td>Wretlind</td>
<td>Sandvik Coromant</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Sune</td>
<td>Horkeby</td>
<td>Siemens Industrial Turbomachinery AB</td>
<td>Sweden</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Ian</td>
<td>Stroud</td>
<td>EPFL École Polytechnique Fédérale De Lausanne</td>
<td>Switzerland</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Aydin</td>
<td>Nassehi</td>
<td>University of Bath</td>
<td>UK</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Fred</td>
<td>Proctor</td>
<td>NIST</td>
<td>US</td>
<td>online</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Ronnie</td>
<td>Fesperman</td>
<td>NIST</td>
<td>US</td>
<td>online</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Bob</td>
<td>Erickson</td>
<td>Pratt & Whitney</td>
<td>US</td>
<td>online</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">David</td>
<td>Loffredo</td>
<td>STEP Tools Inc.</td>
<td>US</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Martin</td>
<td>Hardwick</td>
<td>STEP Tools Inc.</td>
<td>US</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Leon</td>
<td>Xu</td>
<td>The Boeing Company</td>
<td>US</td>
<td><br>
</td>
</tr>
<tr style="height:15.0pt" height="20">
<td style="height:15.0pt" height="20">Sid</td>
<td>Venkatesh</td>
<td>The Boeing Company</td>
<td>US</td>
<td><br>
</td>
</tr>
</tbody>
</table>
<br>
The meeting results are presented at:
<a class="moz-txt-link-freetext" href="http://www.steptools.com/library/stepnc/2012_stockholm/">http://www.steptools.com/library/stepnc/2012_stockholm/</a><br>
<br>
Monday June 11th<br>
--------------------------<br>
We discussed the modeling of semantic tolerances for distributed
assemblies. The key issue is how to represent a semantic tolerance
when the constrained faces are in different file(s) to the
tolerances. Two solutions were discussed and will be tested in the
coming months.<br>
<br>
1 Use different information models for the two cases so that a
tolerance is represented using one set of entities when the faces
are in a different file, and a different set of entities when they
are in the same file. <br>
2. Extend Part 21 to include a new section that models the
references in to and out of a file as URI's so that the same
representation can be used for both internal and external
tolerances.<br>
<br>
Tuesday June 12th<br>
-------------------------<br>
We began the discussion of CAM to CAM data exchange that continued
on Friday.<br>
<br>
Thursday June 14th<br>
---------------------------<br>
The meeting was held in the XPRES Manufacturing Research
Laboratories (<a class="moz-txt-link-abbreviated"
href="http://www.xpres.se">www.xpres.se</a>) of KTH. Many thanks
to Professor Torsten Kjellberg, Dr. Gunilla Sivard and their team
for letting us use their excellent research facilities.<br>
<br>
The scenario planned at the beginning of the project was
demonstrated. Multiple CAD and CAM systems were used to build the
STEP data defined by the STEP and STEP-NC standards. Videos showing
how KTH made the data have been placed on the demonstration web
page. Custom systems were used to "fill in the gaps" where a
commercial translator was not yet available. They created PMI data
for the tolerances, kinematic and accuracy data for the machine, and
catalog data for the cutting tools.<br>
<br>
<a class="moz-txt-link-freetext"
href="ftp://www.steptools.com/private/Stockholm2/STEP_manufacturing_demo_scenario_14_June_2012.pdf">http://www.youtube.com/watch?v=efNy7P3wLQ4&feature=youtu.be</a><br>
<br>
The machining accuracy demonstration showed how to predict the
accuracy of a machine tool for a particular part in a particular
setup by measuring the loaded and unloaded accuracy of a machine
tool. The unloaded accuracy was measured as per the ISO 230
specifications and represented both as ASME B 5.59-2 and STEP data.
The loaded accuracy was predicted using a loaded double ball bar
test developed by KTH and tool force load software developed by
Boeing. <br>
<br>
The results were good with a strong correlation between the accuracy
predictions and the measured part tolerances, but further testing is
necessary because of differences in the predicted and measured
accuracy of the Y axis.<br>
<br>
Other demonstrations showed the usage of a holographic table to view
the motions of a machine tool with data loaded from JavaScript on
the STEP Tools web site. <br>
<br>
<a class="moz-txt-link-freetext"
href="http://www.steptools.com/demos/">http://www.steptools.com/demos/stepnc.html</a><br>
<br>
The definition of tool changer motions was shown by exporting the
kinematics from NX using one of the custom translators developed by
KTH. The data was loaded into a viewer to verify and execute the
STEP kinematics. <br>
<br>
<a class="moz-txt-link-freetext"
href="ftp://www.steptools.com/private/Stockholm2/mach-viewer.zip">ftp://www.steptools.com/private/Stockholm2/mach-viewer.zip</a><br>
<br>
The definition of PMI for a cutting tool assembly was demonstrated
by assembling components from two tool vendors (ISCAR and Sandvik
Coromant). Tolerances were then added to the assembly using NX. A
tool developed by KTH associated the tolerances with the properties
defined by ISO 13399. The result was then exported as an AP242 file
and viewed in ST-Machine and a STEP viewer developed by LKSoft.<br>
<br>
<a class="moz-txt-link-freetext"
href="ftp://www.steptools.com/private/Stockholm2/T1_cutting_tool_assembly_100_AP242.stp">ftp://www.steptools.com/private/Stockholm2/T1_cutting_tool_assembly_100_AP242.stp</a><br>
<a class="moz-txt-link-freetext" href="http://www.youtube.com/watch?v=qKqmrVn5ubE&feature=youtu.be">http://www.youtube.com/watch?v=qKqmrVn5ubE&feature=youtu.be</a><br>
<a class="moz-txt-link-freetext" href="http://www.youtube.com/watch?v=DUghssxjqkw&feature=youtu.be">http://www.youtube.com/watch?v=DUghssxjqkw&feature=youtu.be</a><br>
<a class="moz-txt-link-freetext" href="http://www.youtube.com/watch?v=HZ_IHFuFFo8&feature=youtu.be">http://www.youtube.com/watch?v=HZ_IHFuFFo8&feature=youtu.be</a><br>
<br>
Friday June 15th<br>
-----------------------<br>
We continued the discussions on CAM to CAM data exchange. We agreed
to make a presentation to the CAM vendors at the IMTS show on
Thursday September 13th. The presentation must emphasize the value
proposition for vendors and users. An invitation letter was drafted
and reviewed.<br>
<br>
<a class="moz-txt-link-freetext"
href="ftp://www.steptools.com/private/CAM_exchange/CAM_Plan.pptx">ftp://www.steptools.com/private/CAM_exchange/CAM_Plan.pptx</a><br>
<br>
We discussed the next steps. Mikael Hedlind suggested that a STEP-NC
Notepad should be developed to enable the development and editing of
toolpaths. We reviewed the STEP cloud architecture and made changes
to reflect the harmonization of AP242 and AP238.<br>
<br>
<a class="moz-txt-link-freetext"
href="ftp://www.steptools.com/private/CAM_exchange/STEP_cloud.pptx">ftp://www.steptools.com/private/CAM_exchange/STEP_cloud.pptx</a>
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