×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

linear Motion

linear Motion

linear Motion

(OP)
I'm an EE and I've been tasked with adding a linear actuator to a product.  I need about 10 mm of motion pushing < 100g of force.  Speed and repetition rate can be very low.  Only binary - fully open or fully closed motion is needed. This is battery powered product from 2 AA and long battery life is important.  I need a solution that I can bang out a few hundred protos right away and then hire help to production engineer for roll out of several K per month.  Production cost is critical and I've been looking at everything from little hobby DC motors to solenoids and shape memory alloy.  I'm sure there is a no brainer answer, but I don't have the background to know what it is.  

Thanks - s

RE: linear Motion

If cost is everything then it will likely be a scratch job.  I would look at a screw drive and something like a pager motor.

Or an eccentric cam with a spring follower.

You want cheap tear apart some floppy disk drives.  Those sell for about $5 last I looked.  If the drive cost 1/2 of what it sells for then you're talking $2.50

 You can well imagine what part of that cost is the head motion control.

 

Keith Cress
kcress - http://www.flaminsystems.com

RE: linear Motion

The first thought that comes to mind is something that works like a latching relay.  Permanent magnets hold the actuator iron at either end and coils kick the actuator from one end to the other.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login



News


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close