The RAPID 2013 Conference & Exposition Directory - Society of ...

3–3:25 pm
Determination of a Scaling Factor for
Use in an Electron Beam Melting Additive
Manufacturing Machine
Andrew Klarner, Student, Ohio State University
Paris Cornwell, Scientific Associate/Student,
Oak Ridge National Lab
To improve the tolerances of components produced by the
Arcam A2 additive manufacturing system a scaling factor is
used. A FARO laser metrology unit was used to measure the
dimensions of the components produced by the Arcam A2
system. The measured dimensions of the Acam A2-produced
parts were compared to the original CAD drawing by using
Geomagic parametric modeling software. It was found that
the dimensions of Arcam A2-produced parts varied with
build orientation and possibly other factors. Determining an
optimized scaling factor has great utility for improving parts
produced by additive manufacturing.
3:30–3:55 pm
Tessa’s Eyes—An Effort to Help Protect
a Little Girl’s Eyes
Jason Reznar, Senior Product Development Engineer,
Rayce Americas
Giles Gaskell, Sales Manager, Wenzel America
Moebius Syndrome is a rare neurological disorder that is present
at birth. It primarily affects the 6th and 7th cranial nerves, leaving
those with the condition unable to move their faces. They can’t
smile, frown, suck, grimace or blink their eyes and typically can’t
move their eyes laterally. Tessa, since birth, has not been able
to blink or close her eyes. Her family has been putting “shields”
on her eyeglasses to protect her eyes. The shields provide a
moisture barrier to help keep her eyes protected and help keep
them from drying out. These shields were very laborious and a
daily activity—they often did not last a full day. After meeting
Tessa, we knew that we could provide a solid solution utilizing
our additive manufacturing machine along with 3D scanning.
We partnered up with Giles Gaskell at Wenzel America and it
was determined that we could scan Tessa’s face along with her
glasses—utilizing line scanning as well as CT scanning. From this
data we were able to extract models to use in our CAD software
to start modeling the new shields that would be permanently
attached to her glasses. Utilizing our Objet Connex 500, we were
able to provide a rigid, clear material that will match Tessa’s face
and glasses exactly. Not only does this solution protect her eyes
greatly, they eliminate the daily need to create shields.
4–4:25 pm
Optical Inspecting via Structured Light Scanning—
KNOW What You Made and Prove It!
Tony DeCarmine, Technical Director,
Oxford Performance Materials (OPM)
Additive manufacturing processes enable the creation of detailed,
complex structures. While this is wonderful, it creates difficulty
in inspecting such parts. Conventional approaches, including
calipering and shadow graphing, are easily defeated by features
simple to create via additive manufacturing processes. structured
light scanning (aka white light) enables inspection of whole part
surfaces. The product is a surface map, readily comparable to the
original geometry file. The SLS process is substantially faster than
either CMM or laser systems. Accuracy is more than adequate
to inspect parts with manufacturing precision typical of additive
processes. Case studies will demonstrate the virtues.
4:30–4:55 pm
The Fastest Path from Scan to CAD
Kevin Scofield, Senior Product Manager, Geomagic
Bill Greene, Founder/Vice President of Business Development,
Level 3 Inspection
This presentation will allow everyone to understand how
Geomagic Spark has turned the world of 3D scanning into CAD
design on its head. See user examples of re-engineered parts and
assemblies, created directly from a scan into a solid model with a
few clicks of the mouse; see how the power of dimension-driven
design and editing, assembly modeling, and use in integrated
CAE, CAM and rendering applications, transforms the world
of scanning and point cloud processing; and understand how
Geomagic Spark can fit perfectly with your existing CAD and
engineering workflows.
6/2013 – RAPID 45