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Questions tagged [mechanical-engineering]

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What kind of bearing do I need?

I want to create a hammer saw weapon for a battle bot like Sawblaze and, lacking the design of saw blaze, I'm wondering what kind of bearing I need for various parts of the hammer saw weapon. I have ...
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37 views

How do I convert horizontal inward motion to vertical downwards motion

I have a small coil gun project for which I designed a magazine to put my soft iron projectiles, my main concern is to design some sort of magazine mechanism with a safety because the “accelerator” is ...
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0 answers
35 views

Screw theory for kinematics/dynamics of mechanisms

Is screw theory commonly used for general kinematics/dynamics of mechanisms (not just robotics)? I'd be interested in anything that covers the types of mechanisms you would find in a typical ...
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0 answers
47 views

Degree of freedom and Grubler formula

I am attempting to apply the Grubler formula (which can be found here: https://learnmech.com/how-to-calculate-degree-of-freedom-of/), but it does not seem to yield the expected result for the ...
2 votes
1 answer
240 views

How to control the position of a load shared between two (servo)motors?

I want to position-control an axis combining the action of two DC servomotors - one of them alone is not powerful enough; I had those available and preferred not to buy a new one. I have not the ...
0 votes
0 answers
27 views

How to find coefficient of friction that will maximize torque?

When using DC motors with a drive wheel (aka "direct drive") to propel a vehicle (e.g. an RC car), force and torque play a role in how efficiently that motor's power is transferred into ...
2 votes
3 answers
48 views

Doubt regarding publishing of robot in a journal or to be applicable for a presentation

i was just curious about publishing an abstract or stuff like that about a robot I've made all by myself . Do i really need to make a working model of it or 3d solid works or cad will be enough ? . I ...
1 vote
0 answers
46 views

What geared mechanisms can convert various weak stepper motors drive inputs into a higher torque output?

I'm interested in making an arduino robotic arm for something that need precision and/or torque (like CNC), but first, I'm exploring/searching what I would need and how much it would cost. What I ...
1 vote
2 answers
205 views

What are the pros and cons of Zip Chain Actuators in robotics? [closed]

Well, I just found out about these Zipper Chain Linear Actuators, but I couldn't find much information comparing these types to other types of actuators. For example, what is the performance of Zip ...
0 votes
1 answer
70 views

Alternatives to Mount the Motors on Quadcopter

We are doing a quadcopter project and we are at the stage of building the vehicle. However due to lack of attention, the screw holes of the Brushless Motors (Emax CF2822) we bought do not align with ...
2 votes
3 answers
2k views

Mechanical or electrical engineering for robotic and automation? [closed]

I have decided to pursue a career in automation and robotic. At the moment, I am being torn between Mechanical and Electrical Engineering. I know that both of them relate to my choices of career, and ...