All Questions
Tagged with mechanical design
12
questions
0
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3
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69
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Electronic enclosure - Long screw holes
am designing an electronic enclosure for a medical device. For assembly reasons, the enclosure is split into two halves, with the bottom half having a depth of 200mm and top half of depth 50mm. I want ...
1
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0
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34
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Cryogenic pump - why is this part slotted?
What is the purpose of that slotted area?
In my opinion it is done that way in order to prevent it (the impeller) from sticking to the pump body in case it is not properly cooled down.
Some people say ...
1
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1
answer
115
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how to interpret ISO2768-mK angular tolerance
How to apply tolerance for angle based on ISO-2768-mK? Cause I am confused about the statement "Permissible deviations in degrees and minutes for ranges in nominal lengths". Lets say I have ...
- 11
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1
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96
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Is there a geometry that meshes exactly with a rope?
I'm in a use case where the outer surface is a gear driven by a motor (that's the easy part) and the inner surface meshes with a metallic (iron) rope. When the part rotates, I want the motor and ...
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1
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114
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Need new pressure switch mechanism for a 3 phase compressor using a 220V AC Drive
I've bought a vintage Quincy 216 air compressor. Actually there are duel Quincy 216's - each has a separate 3 phase motor. One motor is 1.5 HP and the other motor is 2 HP. The compressors share a ...
- 101
4
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258
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How is motor torque related to capstan equation?
I know that capstan equation relates $T_{in}$ and $T_{out}$ as $T_{out} = T_{in}e^{u \cdot F_c}$, where $u$ is friction coefficient and $F_c$ is wrap (slip) angle. In my situation, the capstan is ...
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1
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51
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How to model a driven wheel with no slip
I'm working on a design problem, and I'm having trouble figuring out how to model the torque needed to drive a bike tire at a set acceleration.
Let's say I have a tire with normal force between tire ...
1
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1
answer
947
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How to prevent an object doing a full rotation on a shaft
I basically need a block on a shaft to rotate between 90 degrees (vertical) and approximately 180 degrees (horizontal) counterclockwise on a shaft. I don't want the part to fall below 180 degrees. At ...
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3
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748
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How much force/torque act on a wheel of a vehicle when vehicle moves a constant speed and suddenly got a bump or jerk?
I am working on disturbance rejection technique in a vehicle of a wheel. Suppose our vehicle moves with a constant speed 15 km/h. Since roads are uneven in nature, suddenly vehicle got a bump or jerk. ...
- 7
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1
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133
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Z-axis auto adjusting fixture device
I am looking for a mechanism that would allow me to support a fixture attached to a 3-axis motorized stage. I have attached a picture of my current design. I trying to design/incorporate some sort of ...
- 101
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2
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150
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How to make a clamp for this motor to move it in two directions?
I'm working on a disc brake balancing machine, as shown below this is a belt pulley drive and for alignment purposes I want motor to be able to move vertically as well as inwards outwards (to tighten ...
- 101
-2
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1
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Is there something that can expand to 12 times it's size on the x & y axis (not concerned about the z), and can still return to it's original shape?
I posted this over on physics, they suggested I cross-post it here.
I've been looking for a solid square (non-pourus) that can expand to 12x it's size and back again. This needs to grow and shrink on ...
