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Questions tagged [stepper-motor]

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40 views

load in a stepper motor

I want to move a 7 kg object linearly, using a stepper motor. How can I determine the torque required by a stepper motor depending on the load?
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1answer
29 views

Mini freewheel / overrunning clutch for stepper motor

I am looking for a mini freewheel, one that I could mount on a standard NEMA 17 stepper motor (or similar stepper). I want to use it with a pulley, such that it starts the motion of a wheel, which can ...
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0answers
64 views

Determining required torque for a chain and sprocket conveyor belt

I am working on a project for an electronics class, but need some help with one of the mechanical details. My job is to program a stepper motor to move a conveyor belt back and forth as specified. The ...
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0answers
16 views

What are some things to keep in mind when searching for a step motor where a lot of torque is required?

I want to build rotating arms of length around 2ft that can hold up to 30 lbs of weight and am wondering what kind of motor to get. I'm thinking of getting a step motor so that I can know exactly ...
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2answers
160 views

How much could this motor lift and how fast?

How much could this motor lift and how fast? If I connect a belt to its axis about 1cm away or even 10cm away from its tip. Torque: 1.5Nm Peak Torque: 10Nm Power: 9-30A, to 1000W. https://www....
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1answer
78 views

Stepper motor skipping steps

I'm using two stepper motors (datasheet below) to pan and tilt a platform. The bottom motor spins fine without the breadboard glued to the top platform. However, it behaves unpredictably and skips ...
4
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1answer
72 views

smallest highspeed stepper motors?

In my project I've been using galvo scanners for rotating small mirrors but they seem like an overkill at this point for several reasons: 1) Even though I use the slowest and smallest scanners out ...
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2answers
303 views

How to mount timing pulleys/belts for small DIY project

I'm building a rotating lamp for a small DIY project to learn about motors and timing belts/pulleys. As I am learning, finding parts that are small enough, fit a stepper motor shaft and reasonable ...
2
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1answer
120 views

Determining required motor torque

I need to specify a stepper motor to drive a system of gears that isn't yet produced. I have almost no information about the system except that it will involve a stack of planetary gear sets with a ...
3
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1answer
50 views

What thread could this camera motor be?

Firstly, I am sorry that the title of this question isn't helpful. I have bought these motors for a project: 5V 7mm 2 Phase 4 Wire Stepper Motor I assumed that the 1.7mm diameter threaded shaft ...
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2answers
62 views

precision positional control needed for shifting position of lenses

Looking for a way to shift a 30mm lens in two axis perpendicular to another lens. The lens is for shifting a video projection up, down, left, right. Basically what you will find in tilt-shift camera ...
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2answers
452 views

How to calculate the gear ratio of planetary gear?

I saw this picture today: They give an ratio of 5/352. I think this is not possible with a simple gear. Maybe the upper sides ratio is the cause for it. Which formula do I need to calculate the ...
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0answers
101 views

selecting correct stepper motor to lift 5kg for Arduino project - newbie questions

I am trying to figure out what stepper motor is best for my Arduino project. I want to lift 5kg in steps, doesn't have to be fast, its more important to lift the weight. I have done some ...
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1answer
69 views

How much power does a stepper motor draw when holding weight?

I want to lift something in the air with a stepper motor. If the object is 1kg and I want to keep it in the air for 12 hours. Is it a good idea to keep the power on the motor all that time? Will it ...
2
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1answer
39 views

How to vary the force output of a motor while stalled?

I want to provide a gradual increase in force provided to a piston (perhaps 0-100N over the space of a couple of seconds maximum), up till the point it begins moving, and then drive it to a varying ...
3
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1answer
75 views

Why servomotor has such low torque compared with stepper motors?

It is easy to found stepper motors with torque over 2NM for a few coins, however, only expensive industrial servomotors achieve this torque. Examples: Stepper motor: 10usd for 1.3nm with 2.8V at 3....
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1answer
279 views

How does gear reduction affect a stepper motor's holding torque?

I'm new to mechanical engineering, gears, and motors. Coming from a software/hardware background, I am trying to understand how to leverage gear reduction to maximize the torque output of a stepper ...
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0answers
12 views

Are there high torque stepper motors with rear and front mount availabe on the market [closed]

I'm looking for a high torque stepper motor which has a mount wholes on both sides (rear and front). A double shafted model would be great.
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2answers
68 views

Stepper on high-RPM shaft

The CNC spindle is supposed to operate its single shaft in two different modes: high RPM (30,000-80,000 RPM), variable, possibly quite high torque, a straightforward PID to maintain the RPM as torque ...
2
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0answers
62 views

What is the maximum frequency of an AC current?

I saw that the rpm of a synchronous motor is proportional to the frequency of current alteration and I was wondering if there is a theoretical maximum frequency (regardless of magnet strength)? Also ...
4
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1answer
110 views

How do I mechanically convert 200 steps into 360 discreet degrees?

I have a Nema 17 stepper motor that does 200 steps per revolution, or 400 800 and 1600 micro-steps if in micro-stepping mode for convenience sake I would like to somehow translate the 200 steps into ...
1
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1answer
2k views

How much weight can my stepper motor rotate?

I'm building a 3D scanning (photogrammetry) device with a rotating platform, a bunch of wheels and a stepper motor. What I want to know is how much weight that motor could rotate on the platform. ...
4
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1answer
322 views

Optimising driving speed of stepper motor for maximum acceleration by trial and error

I'm writing code for a microcontroller that will ramp up the speed of a stepper motor as quickly as possible, for a jig that I'm building, that moves a workpiece from one position to another along a ...
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0answers
29 views

What Specs are Important in Choosing a Similar Stepper Motor?

I am building a simple DIWire Bender. Included in their Google Code Site materials list is the OrientalMotor 2 Phase Stepper Motor, which will be responsible for feeding and bending the wire. Each ...
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1answer
182 views

Stepper motor holding torque without coils energized?

I want to know what torque a stepper motor can hold when stationary. They seem to only have one figure in specifications for holding torque which, I presume, is while coils are energised. How is ...
4
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1answer
97 views

High RPM - Stepper vs Brushless Motor

I need to spin a threaded rod to raise a picture on a frame. The weight of the picture + the parts that it hangs on will be around 6 pounds. Two motors are going to be used to lift it via threaded ...
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0answers
46 views

What is the maximum degrees per step of a stepper motor for a 3D printer?

I am making a reprap rostock (delta style printer) and I am trying to use as many parts I already have as possible. The stepper I have are 7.2 degrees per step. Even with microstepping, would this ...
4
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3answers
244 views

What is this kind of X-Y motorized system?

I'm wondering what the technical name is for this kind of stepper-motorized arrangement (a positioning system? an XY table?)? What is it typically used for? It appears to have two steppers as ...
4
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1answer
65 views

How much stronger than the bare minimum should a motor be?

A motor gives its strength in N-cm or oz-in, but how do you know how much you require? I know you can just calculate the minimum torque you need to move the load, but is there a typical amount over ...
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2answers
264 views

The couple of my servo motor is it powerful enough?

I am a beginner in Electronics. I am trying to make a small robot controlled by an Arduino. The problem is that I do not know how to calculate the power required to rotate a structure with a servo ...
4
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1answer
2k views

How to calculate if a motor is strong enough

I am building a machine for a project that should slowly tip a screen forward about 95 degrees, hold for a couple of seconds, and then slowly return to vertical. The design I am working on uses two ...
7
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5answers
3k views

How can I get a stepper motor to engage with a freely spinning wheel?

I'm working on a project that uses a strong stepper motor to power a wheel that needs to be able to "coast" freely at times. The motor is too stiff when not engaged, and along with my gearing ratio, ...
2
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2answers
986 views

How to calculate the steps needed for a motor to rotate a circular object in a pulley configuration?

I have a stepper motor with 200 steps per revolution and a pulleys configuration as following: 3 pulleys with 100 mm diameter each on 1184 mm PCD and are equally spaced (120 degrees) from each other. ...
4
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2answers
214 views

System identification on a system with constraints

I am trying to estimate a transfer function for a pan - tilt unit which is not as easy as I hoped. Its input parameter is a velocity, but it is constrained to move from 0° - 359° and the other way ...
5
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1answer
298 views

Power and motor current

This is a follow up question to my question here about torque and stepper motors. There Olin explains: Note also that torque isn't the only criterion for a motor. Power is another important one. ...
13
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1answer
39k views

Understanding required torque for a motor lifting a weight

This is a continuation of me trying to understand torque and stepper motors in my other question. I'm trying to understand the torque a motor would be required to generate to lift a small weight, and ...