<p>Typical Cartesian robots have 3 linear axes of freedom which are perpendicularly oriented at each other. As you can understand, this ensures a working envelope in a form of a rectangular box.Of course, absolutely everything has its pros and cons. The same goes for this type of robots. I'll start with the good things</p>
<p><img src="http://www.allonrobots.com/images/xcartesian_epson.jpg.pagespeed.ic.slJEBuUY1x.jpg" alt="" width="350" height="225" /></p>
<p>http://www.allonrobots.com/cartesian-robots.html</p>