Questions tagged [torque]
The torque tag has no usage guidance.
244
questions
-2
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2answers
57 views
Dividing torque of one axle to three in varying proportions [closed]
I want to power a small mechanical monstrosity, which performs three tasks that require three separate axles. For the powering, there's a hand-operated crankshaft connected to the primary axle that ...
0
votes
2answers
78 views
Effect of multiple shear pins used in combination in a coupling
Does using multiple shear pins under a limiting torque case reduce the minimum required shear pin diameter for the coupling or is the complete load distributed over the shear pins regardless of the ...
0
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1answer
43 views
Calculating the diameter of screws that are on radius 160mm from axis of rotation. I need help - I don't know If I'm thinking in the right way
First of all, english is not my first language so if there are some mistakes I made - I'm sorry and I hope everything is understandable.
The example I am trying to solve reads the following:
The gear ...
1
vote
2answers
86 views
How do you calculate the shear force on the screws that connect a door to a jamb via hinges
I'm trying to calculate the shear forces on hinge screws or bolts. Here is a schematic of the door with the relevant values:
First, I took a free body diagram of the door and its hinges. The ...
1
vote
2answers
56 views
What size feet for this wind-protection panel?
I need to create a series of free-standing perspex panels to add height to an existing fence for wind-proofing purposes.
My idea is that each panel would be fixed to two supporting poles that are ...
3
votes
3answers
135 views
Fun Force Problem - Basic Structure of Two beams supporting weight
I'm very new to engineering and thought I'd start with some basic problems and test them out with my own constructions! I've come up with this fun problem and would love some help solving it.
Say you ...
0
votes
1answer
31 views
calculate torsion in a diffrent sized shaft
first of i know it seems like a homework assignment but it does not, it is calculations i need to do at work and it has been a long time since i studied this material. so I need help to calculate if a ...
1
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1answer
90 views
How does the diameter of a worm gear affect the amount of force needed to turn it
Can anyone help inform a discussion I'm having with fellow modellers on a model railway forum?
I have a locomotive powered by an electric motor turning a 20mm diameter worm gear meshing with a spur ...
1
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0answers
33 views
Magnetic Force - Point of Load
I am using a Magnet like this in an assembly and I am trying to calculate the torque in point P2 (see picture below) resulting from the attraction force F between my magnet and the steel part.
As I ...
0
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0answers
26 views
How to switch between two cores (inside the coil) in a simple brushed DC
I am going to build a very simple brushed DC motor. The rotor will not be enclosed in a stator (the rotor will be built on a bench with free space around it), and I will using permanent magnets to ...
0
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0answers
22 views
What does reactive power translate to in terms of torque?
Say I'm trying to connect an AC generator to a circuit containing an inductor and a resistor, powered by a steam turbine. I understand that because of the resistor, I'll be dissipating energy and ...
0
votes
2answers
39 views
Designing clamp band - coaxial force in screws, zeroing torque in structure - Calculation problems I can't simplify my mindset (help)
At first I want to apologize while English is not my first language.
I am a student, and I have to design such configuration:
I already have designed the "fork" (the part on the right side)....
0
votes
2answers
42 views
Is there any mechanical engineering solution that employs 'ankling', as per a cyclist's ankle/foot/pedal setup?
A cyclist will have the pedal spindle somewhere under the front part of their foot, usually around or just behind the ball of the foot. This means that the ankle is part of the driving movement - at a ...
0
votes
1answer
31 views
Determining max shear stress
So I understand that shear stress can be either in the the form of transverse or torsional or both at the same time. And normal stress is due to the moment or a force normal to the surface. My ...
0
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3answers
65 views
Calculating Load On Winch From a Distributed Load?
I am in the process of building an antenna mast that can tilt from horizontal (down) to vertical (up). The mast (arm) is 360" and weighs a total of 105 lbs. I need to calculate the amount of ...
0
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2answers
37 views
Mechanically increase motor torque
An electrical engineer here. Using a stepper motor for a robotic arm. A stepper motor at the base of the arm has a max holding torque of 6kgcm. The arm is around 30cm in length from this base motor ...
0
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3answers
66 views
Mechanical Engineering: How To Amplify Kinetic Energy In Axial Rotational Gear Machinery? [closed]
When I originally posted this question 2021-04-08, I was inspired by pulley physics, especially after viewing these videos at this link and this link and this link. It is not necessary to go to these ...
1
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0answers
61 views
Calculating Z-axis Torque on a 3-D Printer
I recently built a large CoreXY 3D printer and I am wondering if my 4 z-axis stepper motors combined will have enough torque to accelerate the build plate with a heavy 3d print. During the building to ...
1
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1answer
61 views
Computation of the moment of restoring forces for a floating vessel
Some slides associated to the book Handbook of Marine Craft Hydrodynamics and Motion Control (2021 edition) are provided by the author of the book here.
At page 12 of the slides for Chapter 4, the ...
1
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1answer
27 views
Rubik cube torque experiment - Correct equations and experiment set up?
Background
I am attempting to experimentally find out the average torque required to rotate a single face of a Rubik cube. Little to no data is available as it varies from cube to cube. Some people ...
0
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0answers
38 views
What is the feedback signal used in the speed control of a brushless DC motor?
In a brush-less DC (BLDC) motor the commonly used speed is sensed using the feedback from Hall effect sensors and the back or counter EMF. The linked article on Wikipedia also mentions that 'Other ...
0
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2answers
92 views
Good estimates for torque generated while turning a dial
I'm trying to design a little device which is hand-driven and which involves turning a bevel gear pair. I want a small gear pair but I don't want it to be weak. The forces involved will be small (it's ...
0
votes
1answer
48 views
Calculating the output torque of a two-input epicyclic gear system
For a simple planetary gear system with a single input shaft of a known torque, the output torques of the other two shaft can be calculated using the equations below (for a steady state system).
If I ...
0
votes
3answers
41 views
Linkage between two vertically and horizontally offset wheels
I'm trying to drive a wheel with a radius of 20cm that is 20cm above the motor and horizontally offset by 20cm from the motor, similar to the following:
I wonder what a good linkage might be for a ...
0
votes
3answers
73 views
Finding the torque required for telescopic cable mechanism
I am designing a linear telescopic system that gets elevated with a step motor, but to find the compatible motor, I need to work out the torque that is required for the elevation. I have uploaded my ...
0
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2answers
74 views
Integrating torque over time
I cannot seem to be able to find which unit applies to the integral of torque over time. If you compress a bracket shaped load cell, you exercise torque on it, say 5 Nm.
Now, say you do this for 5 ...
0
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1answer
38 views
What is the angle of twist in end point A?
Can anyone please explain this question to me? I am okay with answering a gear assembly with 2 gears at a time. But the third one here is confusing me.
0
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2answers
24 views
how to find torque from force due to pressures that change as a function of z
My teacher is very strict about copying his work so I will have to explain it.
We have a wall with two fluids of different constant densities and depths. The wall is 'L' long. The wall has a section ...
6
votes
5answers
986 views
Ways to brake an axle
I am currently studying Mechanical Engineering and am doing an assignment where I have to design a wire rope tensioner where a wire rope is unspooled from a drum, but the wire has to be at a specific ...
2
votes
0answers
66 views
Advice on spring launcher project
I found an ingenious design of a spring ball launcher on grabcad and I'm interested in adapting it to accelerate a $43.7 \mathrm{~mm}$ diameter, $45 \mathrm{~g}$ golf ball enough to reach $65.5 \...
0
votes
1answer
42 views
What would the tension in the cable be?
A subsequent question stemming from here A massless motor is attached to a massless pulley(the blue circle) with a fixed rotational inertia and they are all attached to a mass X (the green platform). ...
0
votes
1answer
31 views
How to calculate the Torque required to rotate two bars perpendicular to each other
This question relates to a previous question (How to calculate the required torque in a static equilibrium system) where I have enquired about the start-up torque required to rotate a system. However, ...
0
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2answers
58 views
Torque required to start rotating a wheel about its center
Assuming i have a circular disc of a significant mass and diameter. Neglecting friction, if a motor is put at its center how do i calculate the torque required for the wheel to just start to rotate?
...
0
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1answer
52 views
How to calculate torque required to rotate assembly about the center
The image is a hollow cylinder: 2in OD, 1.76in ID. Connected is an angled bracket, 45 deg, that weighs 3lbs. The top rectangle piece connected to the bracket is 10 lbs,the dimensions are 31.1in x 14....
0
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0answers
22 views
Is a differential gear setup equivalent to a voltage divider?
I was wondering if a differential gear setup works equivalently to a voltage divider in the electric domain. As far as I understand, voltage is analogous to torque in mechanical engineering and ...
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0answers
31 views
Force necessary to resist motion due to torque on a drum brake
A drum is subjected to a counterclockwise torque of 16 in-lb. What horizontal force is necessary to resist motion?
Coefficient of friction = 0.40
Weight is neglected.
I'm having a hard time on this ...
1
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1answer
29 views
Determine applied force due to torque
I'm hoping for some clarification regarding converting torque to force at point of contact.
I'm tightening some threaded components, the end faces of each are machined and will form a metal-metal seal ...
0
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0answers
27 views
crude spoke tension gauge
Standard bicycle spoke tensiometers are too large for use with small wheels, the kind used on recumbent bikes and folding bikes. Could a small adjustable or beam-style torque wrench be used to gauge ...
1
vote
2answers
123 views
Calculating required torque of stepper motor for manipulating blinds
I have a outdoors wooden window blinds and currently I am raising/lowering them manually - by pulling/releasing a rope that's hooked on them using pulley. It's the most basic setup but still I can't ...
4
votes
5answers
121 views
Preventing a DC motor from stalling
My team is trying to build a mechanical cannon for a final project for a course and we are running into some problems with our motor stalling.
Our motor stalls when the plate hits either side of this ...
0
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0answers
27 views
Computing winch input torque for certain pull capacity
I am trying to calculate the input torque for my mechanical winch to pull 5000kg. I want to setup a slip clutch on the input shaft and adjust the springs to slip exactly on 5000kg to avoid any damage ...
0
votes
2answers
45 views
How to calculate the required torque in a static equilibrium system
I am working on a personal project where I need to select a motor to rotate a system that is in static equilibrium. The motor torque specification is given in kg.cm.
This is what I have:
Bar : 2 ...
5
votes
1answer
79 views
“Heavy-duty” or not, can my drawer slides really support this weight?
Okay, so recently I got a Dewalt 735 Thickness Planer.
It's great at what it does. (It even LOOKS like it's ready to consume the tender flesh of lumber, like some twisted Victorian lumberjack... ...
2
votes
1answer
56 views
How much should I adjust torque specs for lubricated threads?
The factory manuals for motor vehicles give torque specs for most nuts & bolts. My (possibly incorrect) assumption is that these are for dry threads as would be used in a factory where no oils or ...
3
votes
1answer
41 views
Controlling torque required to turn a shaft
I have an shaft/crank that will be turned by the user.
I want to precisely and dynamically control the torque required to do so.
For simplicity we can think of it as a exercise machine (so the torque ...
1
vote
3answers
73 views
What is the relationship between the type of material(ex: steel, iron etc.), thrust and torque?
If I am drilling through bars of different material(ex: iron, steel etc.) of the same thickness and under the same conditions of drill operations(feed rate and rpm), how will the torque and thrust ...
1
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3answers
116 views
Statically determinate structure by adding moment
I'm considering the problem below.
It's a setup with a roller joint and a pinned joint with a hinge between the two rigid links.
Since there are now 3 unknowns for 3 equations and a zero moment at the ...
1
vote
2answers
820 views
Does a gear retain its mechanical advantage in a 1 2 1 ratio?
For example if the first gear has 32 teeth and the second 64, if the third also has 32 teeth would the output of the third retain the mechanical advantage created by the first 32 tooth gear powering ...
1
vote
1answer
77 views
How to calculate the torque for motors for a Core XY movment?
I am trying to design a simple setup that follows the core XY movement shown:
I have been researching the statics behind this movement in order to calculate the minimum torque for the motor so I ...
2
votes
0answers
54 views
PMDC Motor Characteristic Graph
I am trying create a graph similar to as shown below. However, I am confused as to how the torque is related to the characteristics.
The graph that is to be replicated for certain parameters:
The ...
