[step-manufacturing] Minutes of Conference Call #15

[Martin Hardwick]

_Attendees_
Martin Hardwick, STEP Tools, USA
David Loffredo, STEP Tools, USA
Fred Proctor, NIST, USA
Leon Xu, Boeing, USA
Mikael Hedlind, KTH, Sweden
Magnus Lundgren, KTH, Sweden
Fiona Zhao, NIST,/New Zealand
Bob Erickson, Pratt & Whitney, USA
David Odendahl, Boeing, USA
Bengt Olsson, Sandvik, Sweden
Alain Brail, AlBavis,  France
Larry Maggiano, Mitutoyo, USA
Anna Valente, ITIA-CNR, Italy
Vincent Marchini, Ameritech, USA

_Apologies for Absence_
Aydin Nassehi, U.Bath, UK
Stephen Newman, U.Bath, UK
Sid Venkatesh, Boeing, USA
Chris Pfeifer CCAT, USA
Ian Stroud, Switzerland

We reviewed the latest version of seven setup Boxy. This version has 
corrected speeds and feeds for the drilling workingsteps and a new 
engraving operation for Al's Rod Shop.

ftp://ftp.steptools.com/private/NIST/Boxy_Part_3-Axis_Machining_7_Setups_v3.238

We discussed the tooling data and agreed to continue with the plan to 
make AP-203 e2 models and ISO 13399 model to describe the tool 
dimensions. Sandvik has prepared a slide showing the ISO 13399 standard 
names for the parameters we discussed in previous telcons.

ftp://ftp.steptools.com/private/NIST/tools/ISO_13399_cutting_tool_parameters.ppt

Some of the parameters represent minimums or maximums and it was 
suggested that these should be shown in the AP-203 e2 data as +/- 
tolerance values. Some of the parameters have names that will not be 
immediately recognizable and it was suggested that links could be given 
to reference pages explaining the parameters using STRL's (see below).

We discussed how to further enhance the example data and the standard so 
that a single AP-238 file can be a "one stop shop" for everything the 
machine and operator need to know to make a part. NIST observed that the 
initial stock dimensions are hard to find. STEP Tools explained that the 
current STEP-NC Explorer assumes that the stock dimensions can be found 
by querying the initial stock of the main workplan, but there is no such 
item in Boxy. Therefore, the explorer will be updated so that any 
workpiece can be queried for its dimensions.

NIST also suggested that there should be programs available to make the 
stock from other kinds of workpieces. A future version of the STEP-NC 
Explorer might be able to generate such tool paths or web site could be 
provided with STRL links to programs that convert popular starting items 
into the required stock.

We discussed how to demonstrate STRL's at the June demonstration and 
came up with the following ideas.

1. Line Balancing. Create a web site of operations and machines and use 
a spreadsheet to balance the operations between machines to maximize 
speed or minimize cost.
2. Ancillary Documentation. Use some STRL's as URL's for web pages 
explaining attributes of the data such as the tooling parameters in more 
detail.
3. Distributed Simulation. Link a series of operations and simulate the 
machining of a part as it moves between the machines.
4. Toolpath generation. Send a query to a server describing an operation 
so that it can generate appropriate tool paths.

We reviewed the latest version of the Closed Loop machining model. It 
was suggested that the toolpath_compensation model should have subtypes 
describing how to compensate bottom, side and bottom and side milling 
operations. KTH reminded us that about the Trajectory compensation 
operation that they developed for the CCAT meeting.  The compensation 
operations will be further considered in future telcons.

ftp://ftp.steptools.com/private/NIST/Tool-path_trajectory_compensation.pdf
ftp://ftp.steptools.com/private/NIST/Closed_loop_entities.pdf

The next call will be at the regular times on *Wednesday May 12*. The 
video of this call is at the address below.

ftp://ftp.steptools.com/private/NIST/stepmanuf_telecon_20100505.wmv

Martin Hardwick
Team Leader STEP-Manufacturing

Action Items
----------------
Sandvik to make ISO 13399 models for the cutting tools.
Boeing to make AP-203 e2 presentation models for the cutting tools.

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