All Questions
Tagged with mechanical gears
15
questions
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gear size selection for a compound gear system to fulfill a specific output ratio
I need help creating a compound gear system that will result in the sought after drive ratio or very close to it. Naturally gear teeth need to be whole numbers. Websites like 'GearGenerator' (dot-com) ...
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91
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2-speed 2-direction gearbox design
I need to design a gearbox with the following properties:
The direction of rotation is maintained between the input and output shaft
The input shaft can be rotated in one direction for one gear ratio ...
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1
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0
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73
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Compound Machine with Worm and Worm Wheel Drive Velocity Ratio
I'm having trouble understanding the working principle behind solving this worm drive. Here's the question:
A double threaded worm and 40-tooth worm wheel are used to drive a mechanical winch. The ...
- 115
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1
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how to let a needle move in positv roation and then a negativ rotaiton then it should loops [duplicate]
i am trying to make a watch that looks like the speedometer from merceds benz AMG
my problem is i canot figure out how to let the needle or the minute hand (call it what ever you want) rotate from 0 ...
-1
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1
answer
143
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How can I make a needle to turn slowly CW to the final position, then return quickly CCW back to the initial position and to start again turning CW?
What I want is after the needle reaches 60 it should go back to 0 in the way showed in the image
The mechanism should preferably be based on gears which convert a steady continuous rotation to the ...
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0
answers
137
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Calculation on gearbox design
I want to design a gearbox of 70hp input motor and speed of 1400rpm. The gearbox ratio is 1:10 of 2 stage parallel arrangements.
How do I calculate for the teeth, modules and other requirements ...
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1
answer
188
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How to make a circle spin from the edges
I have an issue where I need to make a large wire through a bearing spin in 3" diameter circles, and have a weight hanging from the bottom of the wire. Essentially, I need a hole that moves in a ...
0
votes
1
answer
519
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I need a coaxial gearbox that translates reciprocating clockwise & counterclockwise rotation to unidirectional while increasing speed of rotation?
I am a noob engineering student. I want to design a coaxial gearbox that takes an input shaft that rotates reciprocally (clockwise then counterclockwise) and increases the speed of rotation ...
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2
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1
answer
123
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Is there a way to convert a short throw in one direction into a long throw in two directions
I have a motor that I have created a simple adapter for; this lets us attach any parts we might design to solve the final problem:
I would like to convert the motors motion to oscillating motion in ...
- 131
1
vote
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370
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I need a mechanism/method to control a shaft that can rotate at different speeds. (faster clockwise and slower anti-clockwise)
I need to develop a mechanism - Where in I have a shaft that needs to rotate at different speeds. Lets say at a higher RPM clockwise and a lower RPM anti-clockwise.
This shaft is attached to my ...
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75
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Compute the maximum resisting torque that can be overcome by the system at the shaft axis
What is the maximum torque the system can withstand at the shaft axis, considering a 2 Nm motor M driving the system through a gear drive and chain drive with an overall reduction ratio between 16:1 ...
2
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3
answers
796
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Torque and RPM calc
started by designing the gear meshing, and now I need to calculate some parameters to determinate if this meshing works for me.
The system considers an electric motor, which technical parameters are: ...
- 155
1
vote
2
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191
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Reacting Propeller Torque?
A motor is used to drive a shaft that is geared through 1:1 bevel gears to a propeller. The shafts are mounted on bearings in a hard casing that is attached to a 2nd ground. I want to know if the 2nd ...
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3
votes
1
answer
795
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4 Gears in a Circular Pattern - Calculating the Proper Distances for Meshing
I have recently been working on a gearbox for a robot. I have this pattern of 4 gears with each gear connected to its 2 neighbors. It looks like this:
You will probably notice something though. ...
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1
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1k
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Force limits for gear rack and pinion gear
I am accessing the feasibility of using a gear rack and pinion gear to move a moderately heavy object. I have never used gear track for a larger project so I don't have an intuitive basis for judging ...
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