Questions tagged [mechanism]

A mechanism is a device designed to transform input forces and movement into a desired set of output forces and the movement.

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Cartesian Stiffness Matrix and Complieance Matrix of Spherical Parallel Manipulator

In the article https://www.sciencedirect.com/science/article/abs/pii/S0094114X14000020, I came across the construction of a Cartesian stiffness matrix. On page 14 I see the components of the moments ...
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How to choose a servo motor for solar tracking mechanism?

I design a solar tracking mechanisim. You can see the very undetailed representation in the pic. For choosing a servo motor how can I calculate the torque etc?
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Why isn’t my shaft moving? [duplicate]

When I put my shaft through the vehicle body (small robot) and have the motor attached to it through two rotating gears, the shaft isn’t rotating? I think it’s due to how the hole diameter is the same ...
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94 views

5 bar linkage hand exoskeleton

I have a project to design a hand exoskeleton for hand rehabilitation. The problem is that i'm thinked I only need the linkage mechanism with multiple 4 bar linkages. But because of human fingers ...
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How to create a jumping mechanism for a small robotic car?

I have to create a jumping mechanism for a small robotic car and was thinking about using a spring mechanism to do so. However, due to dimensions (16cmx8cm) and mass constraints (below 200g) I cannot ...
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What sort of robot would one use to tie precise knots in a string?

I need many knots tied repetitively and consistently in a string. I have been trying to make something which ties knots for me in a consistent manner. I've got a project which requires a few hundred ...
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How to make small quantities of gears

For a hobby project, I'm designing a clock with a single hand that makes one revolution per year. Using really helpful sites like https://geargenerator.com/, I have the gear ratios and dimensions ...
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386 views

Selection of motor and Calculating the torque for 6DOF robot Arm

I am trying to select the motor for a robot arm with six degrees of the freedom robot arm. What should I do to select the motors and which type of motor I should select?
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What should i do to rebuild robot salto from Berkeley uni as a mechanical engineering undergrad?

What are the main components of robot salto? What are the necessary skills and knowledges to reproduce it? Also as you can see, i am a mecheng and i want to reproduce this robot as finishing project ...
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35 views

Pnumatic sulinoid with multiple outputs

I can't figure out what solenoid I would use. Everything I search for comes up with cylinders. Not sure if it's even a sulinoid that I need. I'd like to have 8 hoses connected to a compressor. I'd ...
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135 views

DC geared motors or leadscrew and motor for joints

I'm trying to build a quadruped robot. I studied dynamics and to get an idea, I read and watched papers and videos related to robots like ALof and StarlETH and some more. But since this is my first ...
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115 views

How to turn direction of 4 planar wheels into up/down motion?

For the head in a 2D plotter I have 4 gears in an X configuration in the same plane. The gears are driven by belts from the outside in different combinations. The top and bottom gear can be turned in ...
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router tilting mechanism

I am trying to design a very rigid tilting mechanism for my router. For this purpose I had a look at table saws, which seem to be supported by 2 mechanisms, one in front, one at the back, called "...
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Recommendation for 3D mechanism modeling and simulation software

I'm working on a robotic hand and I would like to simulate different joints and tendon insertion points before starting to actually build it. I've been googling and found things like Solidworks and ...
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410 views

Iron man Jarvis like robot

I'm very passionate about robots from my childhood.I'm a java developer. I love sci-fi movies.I have a little bit knowledge in embedded systems and electronics. My ambition is to build a robot like ...
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Trying to design a mechanical system with vertical and horizontal movement

I'm trying to devise a system to lift a 10kg weight a distance of 1.4m vertically, and allow it to move in/out a distance of 30cm. I'd like the motions to be able to occur simultaneously if possible. ...
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How to transfer motion between these two parts?

I'm trying to model this arm and I'm having a problem knowing what way could I use to make the red part always parallel to the surface of the table
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How a 3d printer moves the header vertically in a MakerBot printer [closed]

I would like to know how the header in this MakerBot printer moves in the vertical up /down direction. Is there a detailed explanation of it including the parts involved?
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Book on mechanisms [closed]

I wanted to know if there is any sort of archive of mechanisms that contains a brief description of mechanisms like there type of motion and forces involved. Not lengthy derivations and other stuff.

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