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<p>Attendees: <br>
</p>
Martin Hardwick, STEP Tools, USA <br>
David Loffredo, STEP Tools, USA <br>
David Odendahl, Boeing, USA <br>
Sid Venkatesh, Boeing, USA<br>
Ted Driggs, Okuma, USA <br>
Liming Li, JSL Innovations, USA<br>
Larry Maggiano, Mitutoyo, USA<br>
Udo Herbes, DMG, USA<br>
Bob Ericksson, P&W, USA <br>
Thanh Huyn, Okuma, USA<br>
Ted Driggs, Okuma, USA<br>
Clinton Christian, Renishaw, Canada <br>
Daniel, Niederwestberg, DMG, Germany <br>
Michael Kirbach, DMG, Germany <br>
Saur Anfreas, DMG Germany<br>
Alain Brail, Airbus (retired), France <br>
Christian Callet, Datakit, France<br>
John Bijnens, KU Leuven, Belgium <br>
Bengt Olssen, Sandvik, Sweden<br>
Mikael Hedlind, Scania, Sweden<br>
Norm Swindells, Ferroday, UK<br>
M.R.IT Amsterdam, Iscar, Israel<br>
Jung-Ho Cho, Hyundai, Korea<br>
Hakchul Lee, Hyundai, Korea<br>
<br>
We discussed the stage models and agreed on the following rules:<br>
<ul>
<li>Stage 1 - 50mm cutter, all pocket radii > 26mm, fillets to
match shoulder radius of cutter 3-axis machining</li>
<li>Stage 2 - 20mm cutter, all pocket radii > 10.5mm, same
z-depth as stage 1, (process can make steps) 3-axis machining</li>
<li>Stage 3 - 20mm & 16mm cutters, 50 thou on final , 4mm
bottom radius, pocket radii > 8.4 mm, fix the ding, 5-axis
machining</li>
<li>Stage 4 - 20mm (2.5mm radius) & 16mm (2mm radius)
cutters, machining to nominal, suggest programming for tool with
4mm radii and machine with 2mm radii when necessary</li>
</ul>
<p>Stage 1 removes material using a single large tool. <br>
</p>
<p>Stage 2 removes the remaining 3-axis material.</p>
<p>Sage 3 prepares for the 5-axis machining by leaving a constant
shell.</p>
<p>Stage 4 meets the tolerances in a single pass. <br>
</p>
<p>Stage 4 is developed by design. Stage 3 can be made using
automated tools. Stage 1 requires creative thought but can be made
quite quickly using a CAD system. Stage 2 is the most challenging
because the Stage 3 shell is not easy to manipulate.</p>
The next conference call will be at the regular times on Wednesday.<br>
<br>
Martin Hardwick<br>
Convener WG15<br>
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