Self centering cylinder / lens holder with stand
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A little overengineered and requires assembly. Spring actuated 3-arm lens or any cylindrical object holder with a stand.
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Model information
- Source
- Printables
- Category
- Engineering
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
Hi, I made this lens holder mechanism over weekend and would like to share, maybe inspires better things :)
Inspired by commercial self centering lens holders.
Would be great to design print in place flexure based mechanism. Maybe someday I will revisit.
I included .step file in case you want to modify. Use aligned seem in slicer settings, as I added cut to force seem away from sliding surfaces. I printed in PLA and rings might be slightly welded after printing, but should slide nicely once forced with leverage. A little bit of grease helps the mechanism move better.
All rods are press fit, you might start by pressing all 4 required per arm on one arm, then feed through rings and press fit second arm
Enjoy ! :)
BOM:
3 x M3x6
3 x M3x20
3 x tension 15mm long spring, I think I used 0.5mm wire one (o-rings work as well)
3 x 3mm diameter 30mm rod - I recommend 30mm, then you can put lens in from of the gripper, not inside it. 20mm is minimum to join arms
6 x 5mm diameter 20mm rod
For the stand:
6 x M3 insert
3 x M3 thumb screw