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<u>Attendees</u><br>
Martin Hardwick, STEP Tools, USA
<br>
David Loffredo, STEP Tools, USA
<br>
Bengt Olsson, Sandvik, Sweden
<small><br>
</small>
Fred Proctor, NIST, USA
<br>
Leon Xu, Boeing, USA
<br>
Mikael Hedlind, KTH, Sweden<br>
Ian Stroud, Switzerland<br>
David Odendahl, Boeing, USA
<br>
Anna Valente, ITIA-CNR, Italy<br>
<br>
<u>Apologies for Absence</u><br>
Sid Venkatesh, Boeing, USA<br>
Aydin Nassehi, U.Bath, UK<br>
Stephen Newman, U.Bath, UK<br>
Magnus Lundgren, KTH, Sweden<br>
Larry Maggiano, Mitutoyo, USA<br>
Alain Brail, AlBavis, France
<br>
<br>
<br>
The recommended material for the tool wear demonstration is ISO 1.3
Steel or US Grade 1060 with US Grade 1055 being a reasonable second
choice.<br>
<br>
The recommended cutting tools are:<br>
<br>
1. A 16mm end mill.<br>
2. A 10mm spot drill. <br>
3. A 10.5 mm drill.<br>
4. A 5mm drill.<br>
5. A 6mm tapping tool. <br>
<br>
The tool wear will be measured for the 16mm end mill. To reduce costs
Boeing will use a 5/8 inch (15.875 mm) end mill. The tool size may
cause an issue at NIST because the tool holder on the 5-axis DMG
machine is limited to half inch tools. Possible solutions include<br>
<br>
1. Replace the holder with one that can take larger tools<br>
2. Grind the shank of the tool to fit in the holder<br>
3. Scale the part<br>
4. Use one of the 3-axis machines at NIST instead<br>
<br>
Boeing and CCAT are both planning to run their experiments using a
3-axis machine so adopting the same type of machine at NIST will allow
for easier reuse of data between sites. The main issue with using a 3
axis machine is the time required for 12 setups during a live
demonstration. Methods to reduce this time include:<br>
<br>
1. Machining 12 parts so that the machine makes a complete Boxy but on
12 pieces.<br>
2. Using the power of the STEP-NC Explorer to adjust the toolpaths for
the actual coordinates of a part that has been rapidly re-fixtured
between setups.<br>
<br>
The second solution will require the machine to have a probe or other
measurement device.<br>
<br>
We reviewed the feed-speed optimization process in the STEP-NC
Explorer. The following observations were made:<br>
<br>
1. The base line feeds and speeds need to be changed to 19mm per minute
and 279 rpm for the selected material. <br>
2. The optimization function will be able to find more feeds that can
be changed when better cross section data is available.<br>
3. There are some caching issues in the STEP-NC Explorer where lists
are not being updated properly when different choices are made in
selectives.<br>
4. The selective choice data needs to be made persistent so that it can
be shared between sites.<br>
<br>
We discussed the possibility of adding a tool wear measurement function
and agreed that it should be possible for us to code one from the
Taylor equations.<br>
<br>
We discussed other demonstrations for the meeting. Sandvik is preparing
a tool geometry assembly system that will create an AP-214 model of a
cutting tool using ISO 13399 and AP-214 models of the tool components.
The University of Bath is continuing to work on its path planning tools
and hopes to have a system that will export data from two CAM systems
ready to demonstrate by April 22nd.<br>
<br>
The next call will be at the regular times on Wednesday March 17th.
A
video of this call is on the ftp site.<br>
<br>
<a class="moz-txt-link-freetext"
href="ftp://ftp.steptools.com/private/NIST/stepmanuf_telecon_20100203.wmv">ftp://ftp.steptools.com/private/NIST/stepmanuf_telecon_20100303.wmv</a><br>
<br>
Martin Hardwick<br>
Team Leader STEP-Manufacturing<br>
<br>
Action Items<br>
----------------<br>
Boeing to prepare a new version of the Cross Section data.<br>
STEP Tools to correct the caching bugs in the STEP-NC Explorer.<br>
NIST to investigate solutions to the 1/2 inch tool problem<br>
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