Forums

linear actuator

Started by mechatronicsccc June 3, 2006
I'm building a small pick and place robot that will pick up
small plactic tubes and stack then.
Dose any one know If there is a cheap linear actuator that will
have a 4" travel and pick up something that weighs less then 1lb.
I thought of making my own with a stepper motor and acme screw.
or if anyone seen homemade ideas online.
THanks

For my big bot project I plan to use an SMA gripper using the spring type
from www.robotstore.com
http://www.robotstore.com/store/product.asp?pid&catid70
My goal is for it to pick up empty Coke Cola cans..
Does this help?

Gary T

>I'm building a small pick and place robot that will pick up
>small plactic tubes and stack then.
>Dose any one know If there is a cheap linear actuator that will
>have a 4" travel and pick up something that weighs less then 1lb.
>I thought of making my own with a stepper motor and acme screw.
>or if anyone seen homemade ideas online.
>THanks

No, But thanks.
I need to place limit switches and control the level that it moves up and down.
I remember one time in servo or nuts and volts that somenone had made one.
I got some bids from places on line but the cost was too high.
I seen stepper motors acted like linear actuators. Almost like a rack and pin. But have not seen any online or know what there called.
Thanks

Gary Tolley wrote:
For my big bot project I plan to use an SMA gripper using the spring type
from www.robotstore.com
http://www.robotstore.com/store/product.asp?pid=85&catid=1570
My goal is for it to pick up empty Coke Cola cans..
Does this help?

Gary T

>I'm building a small pick and place robot that will pick up
>small plactic tubes and stack then.
>Dose any one know If there is a cheap linear actuator that will
>have a 4" travel and pick up something that weighs less then 1lb.
>I thought of making my own with a stepper motor and acme screw.
>or if anyone seen homemade ideas online.
>THanks

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I've seen this done cheaply like this:

Get a drawer slide (like for a under-the-desk keyboard drawer) attach a
peice of chain to it (like a 'rack') and use a matching sprocket for
the pinion. Add a couple limit switchesn and you're done!
Drawer slides are available at HomeDepot and such like, VexLabs has the
chain and sprocket set (or you may be able to find it cheaper on ebay)
or rob some bicycle of it's chain and gear. It's a little crude but
it'll work.

Let us know how it works out,

Dave
--- In b..., "mechatronicsccc"
wrote:
>
> I'm building a small pick and place robot that will pick up
> small plactic tubes and stack then.
> Dose any one know If there is a cheap linear actuator that will
> have a 4" travel and pick up something that weighs less then 1lb.
> I thought of making my own with a stepper motor and acme screw.
> or if anyone seen homemade ideas online.
> THanks
>