Questions tagged [machine-design]
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What is the Hoop stress and bending moment relation
So I am working on a club telescope project. I have to design the tube for the telescope.
So I found hoop stress to be most critical stress.
The tube's bottommost end has a mirror and a mirror cell. I ...
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I was solving fluctuating load problems and the word "static" confused me
Here's a snippet of the question that was asked a couple of years ago in university exam:
A cantilever beam made of cold rolled steel for which ultimate tensile strength =540 MPa and Yield tensile ...
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What is the hole tolerance in hand tap guide?
What is the tolerance for through hole to match the UNC 1/4-20 tap ⌀ 6mm? (tap shaft diameter ⌀ = 6mm) I want to make the diameter of the hole such that the tap stands in the hole and doesn't fall ...
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Example of Extremely Tiny Amount of Horsepower
I just took an exam and messed up the horsepower calculation acting on a pinion and got 0.059 hp (correct is 1.67 I believe). I should be fine grade wise I am simply curious about an example of ...
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Find stresses involved and calculate magnitudes
I am new to mechanical design.What all forces and moments act on the hinge plate in following figure?How to find magnitude of stresses induced on the supports?
Note: The spring is an expansion spring ...
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Load torque required for driving lead screw
I want to calculate motor torque for lead screw mechanism like this (horizontal)
I want equation to calculate this mechanism to find motor.
I use this equation https://www.youtube.com/watch?v=...
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What is the difference between side-channel/regenerative/ring/vortex blowers?
I am looking to write a Wikipedia article for side-channel blowers, but I have some big confusions that are not being alleviated by my attempts at research.
There are certainly two distinct ways that ...
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Static analysis of a lead screw and disc friction
I'm doing a static analysis of a square thread lead screw. I think this site gives a good description of the problem.
Screw threads statics
To calculate the moment on the thread the mean radius of ...
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Is it viable to "convert" petrol buses to electric?
As part of sustainable transformation, a city is planning to replace its fleet of 300 petrol-powered buses (part of its rapid transit system) to electric buses. 100-each were bought 7 years ago, 5 ...
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I am looking to make thread changes to a handpiece for laser hair removal equipment
I am looking to make a design update to the threading of the main body hand piece (piece in which you hold) to the different size standoffs (basically pieces that position the laser beam at different ...
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Proper way to mount a toolpost to a lathe
I recently bought a lathe of the A site that was quite clearly from China. It claims to be 8" x 23". It came with a turret style tool-post which, frankly, I don't want to deal with shims so ...
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Identifying Marin Factors In Ansys For Fatigue Analysis
I am conducting a fatigue analysis for a mechanical shaft on ANSYS. Everything is fine except for defining marin factors. I am eager to specify some crucial marin factors, such as the temperature ...
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How do mechanical engineers, in practice, account for drag/air resistance when designing machines?
This is a question I've had on my mind for a while. I was recently looking at machine in operation: it was a machine which had a bunch of vertical spindles holding yarn bobbins, rotating at a high ...
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Serving for automatic vending machine
I want a serving mechanism for my vending machine. For my mahine, our product (fried ice cream) will fall into the air fryer and fry it, and then it will come to the plate or bowl to serve. I want to ...
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Passive mechanical system to direct force and displacement into different ropes - Can this even be? (Mechanical transistor with direct actuation)
In this question I'd like to ask wether it is possible in general to build the following device. I don't come from an engineering background, so I'm probably not using the right words, but I'll try to ...
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