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I need to find a linear actuator that can extend to multiple times it's length. I am going to be fixing the actuator horizontally and it will carry a light vertical load.

So far I have thought of using something similar to the mechanism in a scissor lift. However, this is intended for a CNC application and needs high precision, and I'm not sure a scissor lift design would be rigid enough vertically when place horizontal. The system will eventually be feedback controlled so some give can be tolerated.

Is there something other than a scissor lift design that would be better suited to this application?

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closed as off-topic by Chuck Oct 10 '17 at 18:16

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions must demonstrate an understanding of the problem to be solved, so they should include details of what you want to achieve, what you tried, what you saw, what you expected to see and what you don't understand. See How to Ask, tour, help center and the Robotics question checklist for advice on how to write a good question." – Chuck
If this question can be reworded to fit the rules in the help center, please edit the question.

  • $\begingroup$ Can you not use a ball screw actuator? $\endgroup$ – SteveO Sep 9 '17 at 8:54
  • $\begingroup$ Welcome to Robotics TimTheEnchanter, but I'm afraid that Unbounded Design Questions are off-topic because there are many ways to solve any given design problem. We prefer practical, answerable questions based on actual problems that you face, so questions which ask for a list of approaches or a subjective recommendation on a method (for how to build something, how to accomplish something, what something is capable of, etc.) are off-topic. Please take a look at How to Ask & tour for more information on how stack exchange works. $\endgroup$ – Chuck Oct 10 '17 at 18:13
  • $\begingroup$ You said, "intended for a CNC application and needs high precision, and I'm not sure a scissor design would be rigid enough." You then immediately say, "some give can be tolerated." Pick one. What is your tolerance? You can have some give in what dimension? I can Google "telescoping linear actuator" and find results. I don't understand how those aren't useful to you. Ultimately, though, you appear to have a set of requirements and seem to want help designing a solution. You're more than welcome to join us in Robotics Chat and ask, but those questions are off-topic for the site. $\endgroup$ – Chuck Oct 10 '17 at 18:16
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You could use a linear motor like this one we use on our wheelchair(to push the seat up):

https://youtu.be/3lb_8nmy90c

Thouse motors are calles lamba motors and are made from phoenix mecano.

The have smaller and bigger one, the new version of the wheelchair has 1 stronger one.

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  • $\begingroup$ It appears that the actuators used in the video are the standard type that only extend to twice their length. I need a specialized actuator that can extend to many times it's length. $\endgroup$ – TimTheEnchanter Jun 12 '17 at 15:48

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