Need help choosing AC motor

[candikid]

I have made my way into an area where I have absolutely no idea where to start. To keep your interest just a tiny bit longer, I will add some photos of what I need my motor for.

It's a ***** feeder. Pieces of **** will be put into one of its 30 designated trays, and one piece will drop out for every 1/30 revolution of the motor.

I've figured I need at least 40Nm to rotate the carusell when loaded with 30 pieces of ****, so there you have the absolute minimum of torque the motor should produce.

Also a fixed gearing to give me approximately 5-10RPM will be needed.

Power supply is 230V AC, alternatively 3-phase 400V AC.

I really need some help finding a vendor for a motor "like this". You can tell from the pictures it needs to be "flange mount". Yes, I already found one motor (Oriental Motors), but I am afraid it's too weak, with its maximum permissible load of 20Nm.

Thank you all for any interest or suggestions...

 

[240sxguy]

Hmm, a mystery. I wonder what word is being masked.

 

[candikid]

I KNOW, huh?!

 

[240sxguy]

Have you looked into any of the gear reduction motors?

 

[candikid]

Not exactly sure what you mean? The one I have in the model right now has a gear house that you buy separately, that shifts the shaft a bit out of center, but does the trick (gear wise). Only problem is the permissible torque... Is that what you call a gear reduction motor? Sorry for the norwenglish...

 

[G_P]

Find a redneck. That looks like an automated 30 day deer feeder!

Sent via carrier pigeon.

 

[nehog]

OP, where are you located. Around here (New Hampshire in New England) there is an industrial surplus store that would absolutely have what you want.

 

[candikid]

I'm in Norway. Wish I knew of a place like that. The only places I can find are hydraulics vendors with extremely expensive servo motors, reversible and whatnot.

 

[cnc-me]

Why not use a step motor.
Might be able to skip the gearing and just use a cogged belt for reduction.
Of course you would have to have a drive, and all of the associated **** that goes with it.

 

[nehog]

How about an old, variable speed, drill? That, combined with a couple of pulleys to adjust speed some more and you should be all set.

 

[larry_g]

A bit more information please. Is this an intermittent drive or steady rotation? If intermittent then how are you timing the cycle and then stopping at the correct position? It makes a difference. A fast cycle time you may want to consider a clutch.

Is this a play toy experiment or a production machine that has to cycle for the next year? Any reason that you cannot use a motor gear box rated at 50-200 Nm?

Plugging your torque and rpm's into the oriental site gives some 50 hits of motors that will meet your information for single phase. For the three phase many more come up. Can you give us the part number of the motor you came up with?

lg
no neat sig line

 

[_Dock_]

You need a dc motor and gearbox then use a potentiometer controlled drive to control your speed and torque.

 

[kbs2244]

I agree with cnc-me.
The modern way to do this would be with a stepper motor.
But that requires a micro controller and some programming.

To keep it purely mechanical you will probably be better off thinking of a cam or ratcheting mechanism of some kind.
A flange mount, precision speed gear motor will be expensive.

And, like larry_g says, duty cycle will be a consideration.

 

[candikid]

I'm sorry I have not gotten back to you guys. More info:

-It will be intermittent drive, and I just need a fixed torque and speed. No variable nothing.
-A step motor would be nice, and my brother would be happy to program it for me. but aren't they quite expensive? Where can I buy one?
-It will be a machine that is placed some 300km away from me, so I will rather not have to service it for he next year.
-I could buy an even stronger motor, but I've just found ones that puts out 500Nm and weighs in at like 15kg. That's gonna be too heavy.
-The way it works: an animal is required to push a button to get his food. the carusell in the pictures contains food in every slot. when the carusell has rotated one slot, the circuit for the motor will be broken by two IR sensors that is not showing in the model/pictures yet. Then the animal will have to wait for this and this long, before pushing the button will give it more food (this will be programmed)

 

[marcus2004]

This has peaked my interest. Are you able to convert to 12v dc? If so this would make it easier to go to an auto wrecker or car parts store and buy a 12vdc power seat motor or power window motor that might work. Low rpm, high torque.


Sent from my Nexus 7 using Tapatalk 4

 

[candikid]

It is a possibility, the uncomplicated control system will run on DC, can't remember voltage, but there's gonna be a converter available.

But there are two things that keeps me from doing this; 1. I need numbers on gear ratio, torque and hole pattern (can be measured of course), and 2. If the customer is pleased with the whole product, they want me to make more of them, up to ten more, and I would need more motors readily available. I can't imagine an automotive solution would be very cheap to buy new?

 

[cnc-me]

You could do it with a couple of electrical cams like my power ball valve setup.