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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html><head>
<meta content="text/html; charset=ISO-8859-1" http-equiv="content-type"><title>Rowdy Walker</title>
<meta content="Pranav Bhounsule" name="author"></head><body><big><big><big>PRESS RELEASE</big></big></big><br>
last updated: May 10, 2016<br>
<br>
Contact: <a href="mailto:[email protected]">[email protected] </a><br>
Phone: 210-458-6570<br>
Robotics and Motion Lab webpage: <a href="engineering.utsa.edu/%7Epab">engineering.utsa.edu/~pab</a><br>
<br>
Media/Press:<br>
Texas researchers re-engineer vintage toy to walk right out of 3D printer, May 11, 2016 (<a href="http://www.3ders.org/articles/20160511-texas-researchers-re-engineer-vintage-toy-to-walk-right-out-of-3d-printer.html">link</a>) (<a href="media/trevino_3ders_rowdywalker.pdf">cached</a>)<br>
Recreating Antique Toys with Modern Technology, May 9, 2016 (<a href="http://engineering2.utsa.edu/blog/2016/05/09/recreating-antique-toys-with-modern-technology/">link</a>) (<a href="media/trevino_coe_rowdywalker.pdf">cached</a>)<br>
UTSA photo of the day: Strutting Rowdy, April 28, 2016 (<a href="https://www.utsa.edu/today/2016/04/pod-rowdywalker.html">link</a>) (<a href="media/Photo_Strutting_Rowdy.pdf">cached</a>)<br>
<br>
<table style="text-align: left; width: 1185px; height: 580px;" border="1" cellpadding="2" cellspacing="2">
<tbody>
<tr>
<td style="vertical-align: top; width: 224px;">
<div style="text-align: center;"><big style="font-weight: bold;"><big><br>
PHOTOS</big></big> <br>
</div>
<br>
<a href="rowdywalker/all_images.zip">All hi-def images (zipped) 8 MB</a><br>
<br>
Photo credits: Erika Bruno, UTSA Communications and Marketing<br>
<br>
<a href="rowdywalker/IMG_0512.jpg"><img src="rowdywalker/IMG_0512_tn.jpg" alt="" style="border: 0px solid ; width: 200px; height: 133px;"></a><br>
Caption: Rowdy Walker<br>
<a href="rowdywalker/IMG_0512.jpg">Right click here and save for hi-def image (2 MB)</a><br>
<br>
<a href="rowdywalker/IMG_0516.jpg"><img style="border: 0px solid ; width: 200px; height: 133px;" alt="" src="rowdywalker/IMG_0516_tn.jpg"></a><br>
Caption: Christian Trevino with Rowdy Walker<br>
<a href="rowdywalker/IMG_0516.jpg">Right click here and save for hi-def image (2 MB)</a><br>
<br>
<a href="rowdywalker/IMG_0500.jpg"><img style="border: 0px solid ; width: 200px; height: 133px;" alt="" src="rowdywalker/IMG_0500_tn.jpg"></a><br>
Caption: Christian Trevino with Rowdy Walker<br>
<a href="rowdywalker/IMG_0500.jpg">Right click here and save for hi-def image (2 MB)</a><br>
</td>
<td style="vertical-align: top; width: 613px; height: 531px;">
<div style="text-align: center;"><big><big><big><span style="font-weight: bold;"><small>Re-engineering an antique walking toy allows it to practically walk out of the 3D printer</small></span></big></big></big><br>
<big><big><big><span style="font-weight: bold;"></span></big></big></big></div>
<br>
Researchers at The University of Texas San Antonio (UTSA) have
re-engineered a century old walking toy to be 3D printed as a single
integrated assembly, thus allowing it to practically walk straight out
of the 3D printer. <br>
<br>
Traditionally, the toy is made up of three pieces; a body
with a fixed leg, a moving leg, and a hinge joint that
attaches the two. “We have re-engineered the toy so that it can
be 3D printed as a single integrated assembly, that
includes the hinge joint. After the toy is printed
we then have to manually remove the
supporting material that holds the leg in place and the toy is
ready to walk down an incline when launched.”, said Christian
Trevino, the mechanical engineering graduate student who
worked on the project.<br>
<br>
“Just like a windup toy uses potential energy stored in a spring, the
walking toy uses potential energy as it descends downhill.”
said Pranav Bhounsule, the faculty who mentored
Trevino. “However, unlike a windup toy that has an intricate
mechanism, the walking toy relies on its: mass distribution,
inertia, and leg geometry to amble downhill.” <br>
<br>
“I wanted to make a toy that was based on the UTSA mascot,
Rowdy, and 3D printing allowed me to tune the geometry
and mass distribution without having to compromise the
likeness of the logo.”, said Trevino.<br>
<br>
“I showed the toy around to people on campus and they wanted to know
where they could buy one.”, said Bhounsule. However, the
major limitation that prevents mass production of the toy is that 3D
printing is still very slow. The toy takes 12 hours to
print using a hobby grade printer. “One day when 3D printing
becomes quicker, I hope to mass produce the toy and sell it as a
souvenir.” said Trevino who aspires to be a entrepreneur. <br>
</td>
<td style="vertical-align: top; width: 320px;">
<div style="text-align: center;"><big><big style="font-weight: bold;"><br>
VIDEO (STREAMING)</big></big><br>
</div>
<br>
<br>Link to YouTube video: <br><a href="https://youtu.be/wJ3W3MomWl4">https://youtu.be/wJ3W3MomWl4</a><br>
<br>
Click below for streaming YouTube video:<br><br>
<iframe src="https://www.youtube.com/embed/wJ3W3MomWl4?rel=0" allowfullscreen="" frameborder="0" height="360" width="480"></iframe></td>
</tr>
</tbody>
</table>
<br>
<br>
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