RoboSavvy Forum

New Robonova Grippers ?!?!

2008-01-05T00:25:17+01:00

Cheers for the reply.

The link looks rather expensive as I found a company offering the Roland for $3,000. will carry on looking for something. I want one for making prototypes and PCB's. I have thought about building one but with out one I can't build one so it's the chicken and the egg problem.

bren

Statistics: Posted by Robo1 — Sat Jan 05, 2008 12:25 am

New Robonova Grippers ?!?!

2008-01-05T00:06:29+01:00

1) could it machine aluminum blocks.

No, they are too slow you would need a real cnc milling machine.

2) make decent PCB boards, say 0.4mm tracks.

Yes, just about ...with practice. (don't use fibre glass boards)

3) Would you recommend one.

That depends, they are suitable for one off prototype work, but not suitable for manufacturing with. They can be invaluable, I like the MDX-20, but it is limited and dated. The seem to use printer/plotter technology ie open loop stepper motors, RS232 interface virtually no on board buffer or intelligence. In fact there is really not much to them, I don't know how they justify the price.

I realise this isn't in the same quality league but have you seen this:
http://www.elektor-electronics.co.uk/extra/profiler-milling-machine-from-a-kit.91274.lynkx

I have no idea what the PCBs it produces are like?

PS I'll have another go with my FSR's on Sunday and post my results.

Statistics: Posted by NovaOne — Sat Jan 05, 2008 12:06 am

New Robonova Grippers ?!?!

2008-01-04T23:27:35+01:00

Hi NovaOne

I'm been looking at the Roland Modela MDX-15. for the money it looks really sexy. just a couple of question as I've been looking for a machie like this for some time.

1) could it machine aluminum blocks.

2) make decent PCB boards, say 0.4mm tracks.

3) Would you recommend one.

I also got the pressure sensors today so will try them out over the weekend.

Bren

Statistics: Posted by Robo1 — Fri Jan 04, 2008 11:27 pm

New Robonova Grippers ?!?!

2008-01-02T21:14:05+01:00

Thanks Charles,

Statistics: Posted by NovaOne — Wed Jan 02, 2008 9:14 pm

New Robonova Grippers ?!?!

2008-01-02T18:30:15+01:00

Your grippers are impressive NovaOne. You should start producing and selling them, they are really nice.

Charles

Statistics: Posted by JavaRN — Wed Jan 02, 2008 6:30 pm

New Robonova Grippers ?!?!

2008-01-02T09:01:06+01:00

Thanks Bren,

have you got a Roland Modela MDX-20

My boss let me borrow it over the holidays, it has its limitations (ie it still uses stepper motors so you have to keep the feed rate low), but invaluable for this kind of thing.

Did you get the idea from my book showing the robot "Metal"

They are similar to Eiichiro Morinaga's Metallic Fighter.....but much smaller.

you must ave been busy over the holidays with this

Yep, but you ain't seen nothing yet........if all goes well

Statistics: Posted by NovaOne — Wed Jan 02, 2008 9:01 am

New Robonova Grippers ?!?!

2008-01-02T07:33:42+01:00

I love it novaOne, you must ave been busy over the holidays with this and the screen. Did you get the idea from my book showing the robot "Metal". have you got a Roland Modela MDX-20 or access to one. It looks pritty sexy, you could make some nice things out of it.

Bren

Statistics: Posted by Robo1 — Wed Jan 02, 2008 7:33 am

New Robonova Grippers ?!?!

2008-01-02T00:55:55+01:00

These are my latest attempts at making grippers for RN: (Eiichiro Morinaga inspired)

I have integrated an FSR under the thumb, to measure gripping force:

The fingers are made of 2mm carbon fibre, cut out using a Roland Modela MDX-20). The thumb is made from a standard RN gauntlet, given to me by Sonic...Thanks.

I chose the shape to approximate that of the original RN "Hand", so the standard moves are unaffected.....Note I may change the thumb design again.

Statistics: Posted by NovaOne — Wed Jan 02, 2008 12:55 am

New Robonova Grippers ?!?!

2007-10-02T14:06:23+01:00

Thanks for the upload. Great job!

humanoido

Statistics: Posted by Humanoido — Tue Oct 02, 2007 2:06 pm

New Robonova Grippers ?!?!

2007-09-30T13:26:02+01:00

Humanoido wrote:
Chris, I really like your gripper design. The simplicity is well thought out and it minimizes any changes to RN. Is there any way I can get a pattern to brew a set?

humanoido

I've uploaded a 1:1 template for them:

http://robosavvy.com/Builders/NovaOne/RN%20alloy%20templates.pdf

Have fun.

Statistics: Posted by NovaOne — Sun Sep 30, 2007 1:26 pm

New Robonova Grippers ?!?!

2007-09-19T09:52:32+01:00

Thanks, as I'm interested in seeing the design on print and then maybe adapt the design to something with fingers so as not to copy per se. I've been tossing the idea around for some time looking at various gripper and hand designs for something that I could craft that's not too complex, but nothing has really significantly impacted me as for what I want, except the Hitec hands. Unfortunately these are only available in Germany, and not in the USA or Asia.

Take a look at the servo list. I've seen where almost any kind of servo has been used, even both digital and analog mixed. However, to keep compatibility with RNs software, a Hitec digital one could be selected.

Matt Bauer has a lot of experience with servo types and has posted servo information from time to time on this forum, when talking about grippers and his upgraded humanoids. That may be helpful too.

http://www.hitecrcd.com/servos/list
http://www.servocity.com/html/hitec_servos.html

humanoido

Statistics: Posted by Humanoido — Wed Sep 19, 2007 9:52 am

New Robonova Grippers ?!?!

2007-09-19T06:34:27+01:00

Thanks, Humanoido

Is there any way I can get a pattern to brew a set?

I'm looking for the drawing, but seem to have lost it. I try to make the time to draw it again for you within the next week. But I can't promise anything.

You're right they are only intended for picking up small, light objects eg small screw drivers or pens. (Obviously no rope climbing). The largest diameter they will grip is a 20mm (mouse) ball, and this is due to the internal shape of the original RN hand. That is, if i ever get a vision system working, to ID small objects to pick up.

I'd like to fit a more robust, stronger servo of the same size, can you suggest one?

Disclaimer: I haven't noticed any moves that have been seriously affected, but i may be wrong!

Statistics: Posted by NovaOne — Wed Sep 19, 2007 6:34 am

New Robonova Grippers ?!?!

2007-09-19T05:48:36+01:00

Maybe not a lot of functionality to the Hitec grippers at first glance but they look really cute and could probably grip a rope or grip a sheet of paper and pencil for some writing. I'd sure like to have a set. Are these being sold in the USA or Asia? Does anyone have a set? A vid would be cool to see.

humanoido

Statistics: Posted by Humanoido — Wed Sep 19, 2007 5:48 am

New Robonova Grippers ?!?!

2007-09-19T05:44:06+01:00

Chris, I really like your gripper design. The simplicity is well thought out and it minimizes any changes to RN. Is there any way I can get a pattern to brew a set?

humanoido

Statistics: Posted by Humanoido — Wed Sep 19, 2007 5:44 am

New Robonova Grippers ?!?!

2007-07-24T23:05:10+01:00

The advice given is what we are doing anyway. Putting custom parts on a servo and using RB to program it!!!

Statistics: Posted by DirtyRoboto — Tue Jul 24, 2007 11:05 pm