Questions tagged [linear-motion]
The linear-motion tag has no usage guidance.
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Calculating Gearing Ratio from Constrained Rotational Linear Arc and Horizontally Opposed Rotation
I'm 3D printing an aircraft throttle unit as a POC and am trying to calculate the gearing ratios that are required in order transfer the full range of linear motion into a directionally opposed sensor ...
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Linear Motion Stage with Offset Loading Problem
I'm currently developing a linear motion system which will have to withstand a large offset load (see image below). There will be two rails, each with a carriage on, which will be connected by a beam/...
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Single linear actuator lifting mechanism
I have inherited a DIY build and I have some doubts about its design. Have a look at the following diagram:
1 is the linear actuator. It's quite beefy 2000 lbs 12" stroke. It is installed in an ...
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CNC side linear rails
I've been wondering why most (hobby) CNC machines have two actuated linear rails like this:
Besides the extra force for moving the spindle, is there a need for both rails to be actuated? Could the ...
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Off-centre actuation
I'm trying to lift a platform with several guides using a linear actuator, but off the centre as follows:
The load on the platform will be around 100kg, which is just within the linear actuator's ...
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Lifting a cabinet using actuators or scissor lift
Disclaimer: I am not an engineer - just a DIY guy looking for some advice or help please, so please forgive me if I use incorrect terminology :)
I am building a cabinet that has a hidden inner cabinet ...
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How can you convert 180 rotation into two separate motions?
I have a small servo that can rotate 180 degrees. I would like to get two different connected parts to move at different times, one part moving while the servo is between 0-90 degrees, the other part ...
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Difference between Linear Force and Force about an Axis
I am confused between How forces work when applied in singular linear direction vs Force Applied to a continuous mass about an axis(example to rotate it).
Example 1:
Consider an object of mass $m$ ...
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Linear actuator with low vibration and low noise
Which kinds of linear actuators offer the lowest levels of noise and vibration?
I am looking for an actuator with these properties that can push a load vertically on the cm scale. Velocity, accuracy ...
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Can I use more than 2 linear guides to support a linear stage?
I am designing a home CNC mill for machining nonferrous metals. I plan to use linear guides to support either a Y-axis table or the 2 legs of a Y-axis moving gantry.
Linear guides are used to ...
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Linear guide ball bearings
I'm planning to drive a small linear guide (4cm long) with a servo in a setup like this:
I wonder if the ball bearings inside would sustain too much stress due to the vertical forces exerted by the ...
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What causes opposite motion in Newton's third law, or is the motion matter independent?
For every action, there is an equal and opposite reaction. Sample case me doing a push up I force myself to move up by pushing against a rigid body (the floor).
There goes I can not push myself ...
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Linear actuator behind lifting boom
This is a follow-up on my previous question here:
Sizing a motor for a floor jack-like mechanism
The floor jack setup is clearly inefficient when it comes to electric actuators. Something similar to ...
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Design Input: Rotary motion to Linear motion, What system should I choose?
I am posting this here because of the multidisciplinary knowledge needed to tackle this issue.
Problem: I have to make an electromechanical device that is required to have controllable (downward) ...
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Stopping force on wire rope from a falling object attached to it
Okay, bit of a weird one. Imagine an object of known mass in free fall, tethered by a wire rope to an infinitely stiff sky hook. When that wire rope eventually tightens, what will be the stopping ...
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