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Attendees
<br>
--------------
<br>
Martin Hardwick, STEP Tools, USA
<br>
David Loffredo, STEP Tools, USA
<br>
Julie Huang, Sandvik Sweden
<br>
Bengt Olsson, Sandvik, Sweden
<br>
Mikael Hedlind, Scania, Sweden
<br>
Magnus, Lundgren, KTH, Sweden<br>
Christian Callet, Data Kit, France
<br>
Kevin Le Tutour, Boost-Conseil, France<br>
Bryan Dods, GE Power and Water, USA<br>
Sid Venkatesh, Boeing, USA
<br>
Leon Xu, Boeing, USA
<br>
Vincent Marchetti, Ameritech, USA
<br>
Zhigang Wang, Makino, USA
<br>
Doron Cohen, Iscar, Israel
<br>
Larry Maggiano, Mitutoyo, USA<br>
<br>
First. we reviewed a project that is being negotiated to develop
cloud services for STEP-NC. Three services are proposed (see
attachment)<br>
<br>
1. A tool path generation service for stage models.<br>
2. A remote 3D visualization service for machining.<br>
3. A tooling service to optimize a solution for different machines
and cutters.<br>
<br>
The toolpath generation service is to be developed by ARL of Penn
State University using technology that has been developed to compute
the volume differences between two stage models, and then generate
tool paths to remove those volumes. The remote 3D visualization
service is to be developed by Vanderbilt University using technology
that has been developed to enable web collaboration on the design
and manufacturing of 3D models. We, the members of
STEP-Manufacturing, are to develop the tooling optimization service.
The first test part is a GE Mounting Bracket used to attach the
aircraft engine to the airframe. Boeing will machine this part in
its lab and we are to optimize its manufacture so that it can be
machined at many different locations using a wide range of machines
and cutters.<br>
<br>
<font color="#003333"><big><big><span style="font-size: 11pt;
font-family: "Calibri","sans-serif";">Material:
Ti-6Al-4V<o:p></o:p></span><br>
<span style="font-size: 11pt; font-family:
"Calibri","sans-serif";">Service
Temperature: 75 F<o:p></o:p></span><br>
<span style="font-size: 11pt; font-family:
"Calibri","sans-serif";">Minimum
material feature size (wall thickness): 0.050 in.<o:p></o:p></span><br>
<span style="font-size: 11pt; font-family:
"Calibri","sans-serif";">Interface 1:
0.75 inch diameter pin. The pin is to be considered
infinitely stiff.<o:p></o:p></span><br>
<span style="font-size: 11pt; font-family:
"Calibri","sans-serif";">Interfaces 2 –
5: 0.375-24 AS3239-26 machine bolt. Nut face 0.405 in. max
ID and 0.558 in. min OD. The bolts are to be considered
infinitely stiff.<o:p></o:p></span><br>
<br>
<span style="font-size: 11pt; font-family:
"Calibri","sans-serif";">Load
Conditions:<o:p></o:p></span><br>
<span style="font-size: 11pt; font-family:
"Calibri","sans-serif";">1. Max static
linear load of 8,000 lbs vertical up.<o:p></o:p></span><br>
<span style="font-size: 11pt; font-family:
"Calibri","sans-serif";">2. Max static
linear load of 8,500 lbs horizontal out.<o:p></o:p></span><br>
<span style="font-size: 11pt; font-family:
"Calibri","sans-serif";">3. Max static
linear load of 9,500 lbs 42 degrees from vertical.<o:p></o:p></span><br>
<span style="font-size: 11pt; font-family:
"Calibri","sans-serif";">4. Max static
torsional load of 5,000 lb-in horizontal at intersection of
centerline of pin and midpoint between clevis arms.<o:p></o:p></span></big></big></font><br>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><a
href="https://d2t1xqejof9utc.cloudfront.net/competitions/specs/110/original.stp">https://d2t1xqejof9utc.cloudfront.net/competitions/specs/110/original.stp</a><o:p></o:p></span>
</p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span>Second,
we reviewed the manufacturing related extensions to the second
edition of AP242 proposed by Sweden. There is wide agreement on
the goals but consensus has yet to be reached on the best way to
manage unique requirements for different instances of an item,
such as a bolt or a seal, in a manufacturing bill of material.<br>
</p>
<p class="MsoNormal"><a class="moz-txt-link-freetext" href="ftp://www.steptools.com/private/CAM_exchange/Cycle_5/ISO_10303-242_ed2_SIS.pdf">ftp://www.steptools.com/private/CAM_exchange/Cycle_5/ISO_10303-242_ed2_SIS.pdf</a><br>
<a class="moz-txt-link-freetext" href="ftp://www.steptools.com/private/CAM_exchange/Cycle_5/Comments_on_AP242e2_proposal.txt">ftp://www.steptools.com/private/CAM_exchange/Cycle_5/Comments_on_AP242e2_proposal.txt</a><br>
</p>
<p class="MsoNormal">Third, we discussed the MTConnect feedback loop
from the machine tool to the STEP-NC simulator. STEP Tools is
revising its API for implementing the loop to make it easier to
deploy and modify. The API will include sample code for reading
the MTConnectStreams data and setting the current position of the
simulator to match the current position of the machine tool. The
following element contains what we believe is the critical data.<br>
</p>
<p class="MsoNormal"><PathPosition dataItemId="p1_LPathPos"
timestamp="2014-11-10T03:10:43.9218750Z" name="p1_LPathPos"
sequence="70">-355.578 -54.624 115.682</PathPosition></p>
<p class="MsoNormal">We would like the other machine tool vendors to
validate if they are also writing this data and if possible to
send us examples of their MTConnectStreams output. The stream used
to extract the above element can be found here:<br>
<a class="moz-txt-link-freetext" href="ftp://www.steptools.com/private/CAM_exchange/Cycle_5/feed_back.xml">ftp://www.steptools.com/private/CAM_exchange/Cycle_5/feed_back.xml</a><br>
</p>
<p class="MsoNormal">The next two conference calls will be held on
December 10 and December 17 at the regular times and will feature
presentations on the technology that will be used to develop the
Tool Path Generation and 3D Process Visualization services.
Recordings of the last two conference calls are on the web site
below:</p>
<p class="MsoNormal"><a class="moz-txt-link-freetext" href="ftp://www.steptools.com/private/CAM_exchange/Cycle_5/stepmanuf_telecon_20141112.wmv">ftp://www.steptools.com/private/CAM_exchange/Cycle_5/stepmanuf_telecon_20141112.wmv</a><br>
<a class="moz-txt-link-freetext" href="ftp://www.steptools.com/private/CAM_exchange/Cycle_5/stepmanuf_telecon_20141126.wmv">ftp://www.steptools.com/private/CAM_exchange/Cycle_5/stepmanuf_telecon_20141126.wmv</a><br>
</p>
<p class="MsoNormal">Please reserve February 12th and 13th on your
calendars for the kickoff meeting. We would like you to join us in
Orlando if possible and on the simultaneous telecon if not. <br>
</p>
<p class="MsoNormal">Have a great Thanksgiving!<br>
</p>
Martin Hardwick<br>
Team Leader ISO STEP-Manufacturing
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