[step-manufacturing] Minutes of 8th conference call

[Martin Hardwick]

Attendees
---------------
Matthew Lloyd, CCAT
Martin Hardwick, STEP Tools, Inc.
Mikael Hedlind, KTH
Magnus Lundgren, KTH
Bengt Olsson, Sandvik
David Odendahl, Boeing
Larry Maggiano, Mitutoyo
Alain Brail, AlBavis
Aydin Nassehi, University of Bath
Fred Proctor, NIST
Greg Posly, GDLS
Ian Stroud, EPFL
Beyong Lee, NIST/Postech
David Loffredo, STEP Tools, Inc.


Apologies for absence
--------------------------------
Gary Hargreaves, Mastercam
Xun Xu, University of Auckland
Leon Xu, Boeing
Sid Venkatesh, Boeing

Machine tool simulations have been completed for the KTH trunnion and 
the CCAT DMU e70 and one is in progress for the Boeing Northwood 
gantry. The DUM e70 simulator has a "Nutating" table with a 
non-orthogonal B axis.

SC1/Wg7 held a telcon on Tuesday Feb 3 to discuss the requirements 
for machine tool modeling. They are drafting a letter to solicit 
input from the machine tool vendors.

Alain Brail suggested that a video be made showing the parts being 
machined in the three different simulators.

An AP-203 e2 / AP-214 e3 import translator for workpieces has been 
implemented. The import has been tested with AP-203 e2 files produced 
by Catia v5 R19.
ftp://ftp.steptools.com/private/Vancouver/e2_images.ppt

KTH has investigated the kinematics model in AP-214. The AP-214 
kinematics model can represent both open and closed kinematic chains. 
Preliminary results show that the machine tool models we have been 
developing can be mapped into AP-214 along with key properties such 
as maximum spindle speed, maximum feed rate, maximum acceleration and 
maximum jerk. The approach used is the same as the one developed in 
Germany for representing Gears in AP-214.  An example data file and a 
presentation are available at the URL's below.

ftp://ftp.steptools.com/private/Vancouver/Machine_tool_model/DMG_AP214_kinematics_KTH_Hedlind.stp
ftp://ftp.steptools.com/private/Vancouver/Machine_tool_model/KTH_AP214_kinematics_machine_tool_090104.pdf

The following are the upcoming deadlines for the demonstration:

February 21st	- Complete and test 3 and 5 axis manufacturing plans 
for the part (AP-238 models)
March 4th	- Partners commit to participate in the demonstration
May 6th	- Partners complete machining and measurement of the part
May 14th	- First day of demonstration at Boeing
May 15th	- 737 tour and measurement demonstrations at Mitutoyo
May 18th	- SC4 Technical meetings begin in Parksville, Vancouver 
Island, BC, Canada
May 20th	- STEP-NC technical meetings at SC4 end.

The next conference call will be held on Wednesday February 18th at 
the usual times.

Action items
------------------
1.   David Odendahl to complete AP-203 and AP-238 models for the test part.
2.   Sid Venkatesh to clarify any restrictions on nationality 
restrictions a the Boeing facilities.
3.   STEP Tools to produce a video showing the simulators in action.
4.   STEP Tools to deliver an updated version of the STEP-NC explorer 
containing the simulator and AP-203 e2 translator to Boeing, NIST, 
CCAT and KTH.
5.   Partners to commit to participation in the demonstration by March 4th.