Converting Linear to Rotary motion
Why Engineering Stack Exchange recommends it
Engineering Stack Exchange users link it as a quick visual example of a linkage that turns a short linear stroke into a large rotation, such as a piston driving a 90 to 180 degree arm swing.
Recommended by 1 people across 1 different months, 2016 to 2017.
What it is
A 33-second demo by Andy Lovelock showing a simple linkage model, built partly from coffee stirrers, that turns about 6mm of linear travel into 90 degrees of rotary motion. He made it to prove the theory for a woodworking project.
What people said
Recommends Entrepreneur · 2017-06 · Engineering Stack Exchange · on “How to convert 7.62cm linear motion to 150-180° rotary motion”
There are commonly used methods used in backhoes and cherry picker trucks to move the arms about 180 degrees with a single hydraulic piston. If you search for photos of backhoes or power line maintenance trucks you may see a type of linkage. Here is a photo [LINK] This video is crude but you can definitely see the 3 moving parts and how they interact. The red line is the hydraulic cylinder. The white line is a link that connects the 2 green arms. backhoe linkage [LINK] In this second video the link proportions and pivot points are way off. But the essential pieces are there and the concept is the same. Converting Linear to Rotary motion [this video] The transfer function won't be linear though.
Recommends Entrepreneur · 2017-06 · Engineering Stack Exchange · on “How to convert 7.62cm linear motion to 150-180° rotary motion”
Here is another youtube video that is helpful. The link proportions and pivot points are way off. But the essential pieces are there and the concept is the same. [this video]
Cites Zak Kus · 2016-12 · Engineering Stack Exchange · on “Formula for converting linear to rotational motion”
I am trying to design something that rotates 90 degrees based on a small (10mm or so) linear motion, using this basic setup [this video] as an example. There are a lot of questions about how long the arms need to be, how far they need to anchor from the point of rotation, etc. that i need to know. I am assuming there is some formula that governs the relationship that someone can point me to?
Cites Zveratko · 2017-02 · Engineering Stack Exchange · on “Uniform linear movement to uniform rotary movement”
are there any other mechanism without using geared wheel(or its segment). Using shafts only.Something like this [this video] ?