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Topic: uArm??An open source robot arm (Read 35 times) previous topic - next topic

UFactory

After a few days of improvement work, we have made some new designs of the robot arm. Make some changes of the structure to make the arm stable. Add a small gripper and the new sucker holder. Then we decide to try some other materials to make the robot arm. So we got a laser cut Basswood one.

Here is the laser cut Basswood parts.


Do the assembling.


The finish Basswood uArm.


More details of this arm.


Here the small gripper and the new sucker holder.


Change the head of the arm and install the gripper on the arm.






What's more, we also made a transparent one by acrylic this time.


Here is the way that you can install the sucker with the new holder on the robot arm.


So far, we have 3 uArm?, the black acrylic one, the basswood one and the transparent acrylic one.


More testing videos and improvements will be updated soon. We are going to make this arm better, more stable and more accurate.

JimboZA

Roy from ITCrowd: Have you tried turning it off an on again?
I'm on LinkedIn: http://www.linkedin.com/in/jimbrownza

JimboZA

#17
Dec 24, 2013, 06:17 am Last Edit: Dec 24, 2013, 08:43 am by JimboZA Reason: 1
Seriously guys, this is awesome work.

I know you still want to test and improve, but I would really love to get my hands on one soon! When do you anticipate release?

Quote
As we call this open source robot arm. So of course we will make it open and release both the design of the mechanical and electronic with the final source files after we finish this project.

If you want to build one by yourself, we can send you the files after we finish the project.


Will a project like this ever be finished though?  8)

EDIT: I'd be happy to consider the version shown
Roy from ITCrowd: Have you tried turning it off an on again?
I'm on LinkedIn: http://www.linkedin.com/in/jimbrownza

zoomkat

Would be nice to publish the arm frame plans in a pdf format which could be printed out on standard printer paper (larger parts might have to be split between two sheets of paper). I like the wood arm frame as wood can be easily worked with simple tools. 2'x2' sheets of 5.2mm lauan plywood are available at the US home improvement stores for ~$3.
Consider the daffodil. And while you're doing that, I'll be over here, looking through your stuff.   8)

JimboZA

Yep zk- although I've made contact with a local laser cutting outfit, I've been wondering about doing it manually too. Looks like a shit-house full of parts to work by hand, though.

I'd like to see a pdf of just one part, to give it a whirl.
Roy from ITCrowd: Have you tried turning it off an on again?
I'm on LinkedIn: http://www.linkedin.com/in/jimbrownza

zoomkat

PDF patterns would allow dimensionally accurate patterns to be printed, then traced onto what ever the construction material is. A long time back I started making an arm out of craft sticks which are light and fairly strong when doubled up and braced. The important part is getting accurate dimensions of the parts, the holes and the pivot points used in the arm. Below is an arm of somewhat similar design.

http://www.youtube.com/watch?v=PX0raMFnz8A
Consider the daffodil. And while you're doing that, I'll be over here, looking through your stuff.   8)

JimboZA

Here, the Karvinens use an alumin(i)um / polyethelene composite called Dibond. I'm going to try get some offcuts somewhere...
Roy from ITCrowd: Have you tried turning it off an on again?
I'm on LinkedIn: http://www.linkedin.com/in/jimbrownza

JimboZA

I'm assuming / hoping the screws, nuts, spacers and so on are all standard (hopefully Metric  :P )sizes.

Roy from ITCrowd: Have you tried turning it off an on again?
I'm on LinkedIn: http://www.linkedin.com/in/jimbrownza

malopezn

Hi!

That's and awesome work.

I have 3D printer, if you want i can try to print it with ABS. That would give an easy solution for making the arm.

Thanks and best regards

UFactory


Would be nice to publish the arm frame plans in a pdf format which could be printed out on standard printer paper (larger parts might have to be split between two sheets of paper). I like the wood arm frame as wood can be easily worked with simple tools. 2'x2' sheets of 5.2mm lauan plywood are available at the US home improvement stores for ~$3.


Yes, our goal is to make a cheap and easy build robot arm. I have sent you a message about the pdf file.

UFactory


Hi!

That's and awesome work.

I have 3D printer, if you want i can try to print it with ABS. That would give an easy solution for making the arm.

Thanks and best regards


Hi malopezn,

The 3D print one may be a cool idea of building this robot arm. But it may take a lot of time by making the parts by the 3D printer. While using laser cutting, it may be faster and easier.

Thanks so much.

Best Regards,
Eric

UFactory

The second version of the robot arm is quite stable now. Here is a stacking test by using the gripper. More applications and test videos will be updated soon.



See the video here:

http://www.youtube.com/watch?v=_VaSzJJt62U

UFactory

A Vacuum Gripper Suction Cup is often used on industry robot arm in manufacture. And we also add a small one on uArm.

The Vacuum Gripper Suction Cup is controlled by a small Vacuum Pump and a Solenoid Valve.


We made the first load test of the robot arm by using the Vacuum Gripper Suction Cup. It can lift a 330ml Coca Cola and move it to another place. More applications and test videos with the Vacuum Gripper Suction Cup will be updated soon.


See the video here:

http://www.youtube.com/watch?v=x6pJqdSk29Y

UFactory

After several tests of the arm with vacuum gripper suction cup, the robot arm can work very well.

Recently, we got an Iphone 5S, so we decide to make an unboxing test of Iphnoe 5S by uArm.


Let's see how it works.
http://www.youtube.com/watch?v=fqZLsYoKU44

More interesting applications and test video of uArm will be updated soon.

vulture156

Hi everybody!
First of all I want to congratulate you for this project, it´s a really cool arm, the movements are very smooth.
I´m doing something like that for my graduate project, is an aluminum arm and I'm trying to make the kinematic control. I have simulated the movement of all axes with 5 order  polynomics,  but I have not yet tested physically.
Can you share your code? it´s really interesting how the arm work.

Thanks!

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