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Topic: Aluminium robot arm (Read 841 times) previous topic - next topic

krolikbest

Hi,

there is no questions. Want to show my latest project, still in progress:

https://www.youtube.com/watch?v=suFuSS_XOX4

Regards,

Martin



Northof49

Very nice start.  You have quite the adventure ahead of you.

vinceherman

I am curious what will be hanging off of the upper assembly, the piece that rotates back and forth in your video.
If it is to be an arm, I would worry about the torque breaking the servo output shaft that appears to be the only thing attached to the upper assembly.
Most robotic type servo mounts have a second bearing to greatly reduce this force.

IrishChevron

As vinceherman man said.
it ma be all balanced and easy to move now but once you start adding over hang and weight to that over hang it will get...  wonky.. i guess lol.

are you going to use a bearing system to help with this. if so what system will you use?

krolikbest

Hi

on the platform will be double transmission ratio for arms. Also in Arduino i'm just writing the code for starting and braking ramp. So in next two weeks should be one more step further :)


I know I'm at such a point that  problems come out from everywhere in this project  ;)

Northof49

You need something like a lazy susan bearing on the rotating base.  Otherwise, it may bend the shaft.

MarkT

[ I will NOT respond to personal messages, I WILL delete them, use the forum please ]

krolikbest

#7
Jun 12, 2019, 09:36 pm Last Edit: Jun 12, 2019, 09:39 pm by krolikbest
So next step done-
https://www.youtube.com/watch?v=nW0IslMvxqQ

remark: Jittering caused by wheeled shelf.
Next will be inverse kinematics. Planar at least.

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