[step-manufacturing] Minutes of October 31st conference call

[Martin Hardwick]

Attendees
--------------
Martin Hardwick, STEP Tools, USA
David Loffredo, STEP Tools, USA
Mikael Hedlind, Scania, Sweden
Magnus Lundgren, KTH, Sweden
Bengt Olsson, Sandvik, Sweden
Sid Venkatesh, Boeing, USA
Abu Zaman, Boeing, USA
Bob Erickson, Pratt & Whitney, USA
Fred Proctor, NIST, USA
Vincent Marchini, Ameritech, USA
Randu Gruteke, ISCAR, Israel
Doron Cohen, ISCAR, Israel
Ian Stroud, EPFL, Switzerland
Bruce Huang, Siemens
Joachim Andre, Siemens

We discussed a pilot project to demonstrate tool wear management using 
ISO 13399, STEP and STEP-NC. The pilot will connect the CNC machines of 
a manufacturing center to the electronic catalogs of the cutting tooling 
vendors (with levels of indirection as necessary). Applications for the 
CNC machine will prevent errors, minimize tool wear and maximize tool 
usage. Applications for the cutting tool catalog will detect anomalies 
between predicted and actual tool wear and suggest changes for future 
savings.

ftp://www.steptools.com/private/Interoperability_costs/Tool_life_management.ppt

Registration for the NIST Model Based Enterprise (MBE) Summit is now 
open. The session on CAM to CAM data exchange has moved to Thursday 
afternoon.

http://www.nist.gov/el/msid/mbesummit_2012.cfm

We discussed an enhancement to the STEP-NC model to capture machine 
dependent compensations. Today these are modeled as compensation tables 
loaded into the machine tool. The new model replaces them with delta 
curves. Each delta compensates for one source of errors during the 
machining. For example, one delta might compensate for tool deflection 
while another compensates for errors in the machines positional 
accuracy. If the STEP-NC program moves to another machine then the tool 
deflection compensation remains but new curves are loaded to compensate 
for the new machines positional accuracy.

ftp://www.steptools.com/private/Interoperability_costs/Hedlind_toolpath_compensation_v2.pdf

We discussed usage scenarios for the Part 21 extension for external 
references. These include:

 1. Skeleton files to define the form and structure of an assembly or
    other system (e.g the electric system) with external files to
    describe the details. This is similar to CC1 of STEP but with less
    overhead and generalized so that it can be applied to IFC, STEP-NC
    and other STEP Application Protocols.
 2. Indexes to enable the rapid location of items in very large
    databases of distributed Part 21 files.
 3. Data sharing across the supply chain of common workpieces, workplans
    and other resources.
 4. References to library items in ISO 13399 cutting tool catalogs and
    other PLIB standards.
 5. References to standard definitions for common items such as unit
    definitions (inch, foot, yard etc).
 6. Access control for PMI and other data which must be restricted
    verses nominal geometry data which can be widely shared.


ftp://www.steptools.com/private/Interoperability_costs/Big_distributed_engineering_databases.ppt

The next telecon will be held on Wednesday November 14th at the regular 
times. A recording of this meeting is at the following ftp site:

ftp://www.steptools.com/private/Interoperability_costs/stepmanuf_telecon_20121031.wmv

Martin Hardwick
Team Leader ISO STEP-Manufacturing






-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.steptools.com/pipermail/step-manufacturing/attachments/20121102/da50221e/attachment.html>