Greg Needel's Blog » robotics http://www.robogreg.com An outlet for a Yankee Engineer living in Jackson TN Tue, 27 Apr 2010 23:06:35 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 cnc begins http://www.robogreg.com/needel/214 http://www.robogreg.com/needel/214#comments Tue, 09 Jun 2009 21:06:46 +0000 Greg Needel http://www.robogreg.com/?p=214 I made one of the first steps to turning a project from an idea to a reality this morning; making the first financial contribution to the project. While many times I have ideas for things I would like to do, I am careful about only investing in projects which I am GOING to do.  That milestone of my CNC router project happened when I purchased bearings for the machine.

I have been mulling over ideas on how to design this cnc. Mainly I have found 3 design plan sets which seem common online yet none of them meet my needs. Since I am incredibly picky about this sort of thing I figure the best thing to do is to take bits and pieces from different places and make something which is uniquely mine.

Joe’s CNC ( http://www.joescnc.com ) – He has 2 different designs. The first one was made in 2006 and is one of the standards that you see people on cnc forums talking about. His plans are free and it seems like a solid unit. The issue I have with it is that it is a full wrap carriage; meaning that the gantry travels under the work surface. This is bad for a number of reasons but mainly I got a super table to mount this on, namely the new Biesemeyer Extension table for the unisaw ( I wonder how I got that ) and that would prevent this design from going forward.  The second design from Joe is much better but I refuse to pay 100 bucks just for the plans for something I can design myself, I am not really into just building

The next set of plans is the JGRO Plans Like Joe’s plans it offers simple construction methods with MDF and some of the same features. If I was a betting man (which I am) i would say that one of these 2 sets of plans inspired the other. Full plans are available for this one for free, but I really dislike the way that he does linear motion. There is no way I can tell to hold reasonable accuracy with out really spending time tweaking the unit after assembly, something that I know is likely no matter which way I go.

The last type is from the site www.buildyourcnc.com  he has 2 different designs and the one I am going to make  most closely resembles his new machine the black toe while I don’t understand the name I really like the way his linear guides are done.

So the project starts, I purchased these v-bearings for a cheap price of 2.50 each and as I continue to spec my machine I will buy the parts which will help me create more cool projects in the future.

Post to Twitter Post to Plurk Plurk This Post Post to Yahoo Buzz Buzz This Post Post to Delicious Delicious Post to Digg Digg This Post Post to Ping.fm Ping This Post Post to Reddit Reddit Post to StumbleUpon Stumble This Post

]]> http://www.robogreg.com/needel/214/feed 1 I have a new hero http://www.robogreg.com/needel/79 http://www.robogreg.com/needel/79#comments Sun, 29 Mar 2009 23:12:33 +0000 Greg Needel http://www.gregneedel.com/needel/79 Shigeo Hirose, is the director of the Hirose-Fukushima Robotics Lab at Tokyo Tech. Thanks to Gizmodo for bringing him to my attention. After having exploring his site it is very obvious to me that he and his team are by far the leading experts in robotic mechanical design. I make the specific claim about mechanical design because there are always more AI and EE developments that are non public, but seeing his work is like looking at a robotic art gallery. I can only aspire to be as good as him in my lifetime, yet I fear that I will never reach that point.

video on gizmodo.

Post to Twitter Post to Plurk Plurk This Post Post to Yahoo Buzz Buzz This Post Post to Delicious Delicious Post to Digg Digg This Post Post to Ping.fm Ping This Post Post to Reddit Reddit Post to StumbleUpon Stumble This Post

]]> http://www.robogreg.com/needel/79/feed 0