Learning About Electrical Motors!

I would start by looking at the designs of other kitchen mixers, then tracking down the manufacturers of those motors and talking to them.

Yea thanks bhankiii, but it is quite difficult to find out what motor they are using without dissassembling a lot of appliances as they don't tend to say much in manuals. i do have a morphy richards motor and it has a serial code on it but i haven't been able to track anything down from it and i guess it is probably custom built for the appliance by morphy richards. i guess i may find some information in patents if there are any, if you can suggest any other methods of discovering the manufacturers for these motors that would be good. I'm not sure if i feel like calling up the brands them selves as that is a bit brass as at the end of the day they will be the competition. I guess at the end of the day what would be most usefull would be to learn about the different basic designs for motors and what are the charisterisics of the components that will determine if it will be a good or bad design.

New product development usually begins with a hard look at the competition. So, you will need to purchase competitors' products and tear them apart to see what's in them. If your intent is to build something better, you first have to know what you're going to be better than.

Another option is to check out the repair industry. You can find replacement motors for just about anything online, especially on ebay.

The above note is referred to as 'Benchmarking' It's a good place to start, but remember, it's just a place to start. While your benchmarking your competitor's product, he's improving it. You could put yourself in a position of offering an obsolete product.

for sure:
benchmarking is good practice to monitor and learn from what are doing competitors.

It can become a very poor way to stay in the maket as developments photocopiers.

This is the job of poor comnpanies at the war of prices, without anything new to propose.

What has been tried?

What do you mean by what has been tried?

The companies that buld motors for high speed high torque motor can buld yoy anthing. I actually have a custom motor that puts out @ psi whith a fan for a electric supercharger

I repair precision measuring tools as my trade. Being in this field I can tell you, if you want to design a quality product, charge more and design it to be rebuilt. Advertise as THE BEST, and be able to back it up.

I overall agree with others. Dissassemble the top of the line competitions mixer. Take note of any specifications on the motor. Watts, Voltage, RPM, rotation, and spindle dimensions are what you will need. I am in Ontario, Canada and you can order your motor from me(info@precisiontoolworks.com). Be in touch with your specs and I will give my best price.

Are you planning on gearing this device as well? Determine the ideal RPM, we can go from there

BrownWarrior,

For my part, I would concentrate on mixer features, and NOT attempt to design a custom motor when you can buy whatever you need already and design around it if necessary. A 100 Watt motor is way too small for even a hand held mixer if it is the 2 beater type. These motors are the universal type, meaning they are series wound, have brushes, in order to deliver high power and high torque in a small package (they develop the most torque at low speeds). They are called universal because they will operate on AC or DC. In an appliance with electronic speed speed control or other features designed to operate off a particular AC voltage, then that is what is required, but if you disassembled it and powered the motor directly, it would run on DC also, at a lower voltage.

Why in the world would you want to be sidetracked into designing a custom motor? Are you going to design your own fasteners too? This is not the way its done. Find a company that specializes in making universal motors for small appliances and contact them. I don't know your country, or what voltage you want, or what quantities you anticipate, but if you are a manufacturer, they will be happy to work with you. They will certify that their motor will perform as stated for your application, once you both have agreed on specs. Try to use an existing motor, not a custom design, because this will both add greatly to your costs and many companies won't bother unless you pay for the development or the quantities you will purchase are large enough. However, you, or they can often make modifications to an existing design that make it fit your application better for a minimal expense. If you are not a manufacturer at present, use an off the shelf motor that will fit your needs and design your mixer around it. Make sure it is from a reputable company, is open stock, and has any necessary certifications and approvals (such as UL), or at least can meet them. Ideally, find a motor that can be sourced from more than one manufacturer. But be prepared, in many countries you also have to have your finished mixer approved/certified before you can sell it to consumers.

Here are a couple of links to get you started:

http://glorymotor.en.alibaba.com/group/50132644/Universal_Motors.html

http://www.globalsources.com/gsol/I/Universal-motor-manufacturers/b/2000000003844/3000000179720/22608.htm

Greg

Want to learn about motors

"Rotating Electric Machinery and XMFR Tech" by Richardson. This is probally the best one out there, unless you can dig up the old Wilde book.

As far as starting out, look at a variable speed drill. Great little motor, runs on 120 and lock rotor current won't kill you here. They put out the torque you need and are adjustable. Easy to disassemble and seen the inner workings, although with a motor there isn't much.

Have fun.

Try removing a motor from a scrap model railway locomotive and play with it using a 12VDC source and an ammeter, so as to illustrate and learn the basics. The important thing is to let the loaded motor run at at least 50% of its no-load speed, in general, as below that they have an annoying tendency to resemble convector heaters. Been there. Done it. Got the T-shirt, which is now unwanted and available on eBay...

Try to visit the site : http://www.the-acc-group.com

and look for the model type EB 85 N4 for industrial applications

these people sell good motors all over the world and the type i'm telling you, should fit your needs.

Sorry to disappoint you, but that motor is NOT suitable for a mixer!

A mixer requires high torque which an induction motor, capacitor start or not CANNOT provide. It also requires variable speed, which is also not feasible with that motor in this application.

And with all due respect to the posters here encouraging him to design his own motor, that makes as much sense as setting out to design a car, and then deciding "hey, I might as well design a custom motor for it too!".

Greg

yes Sir,
you are correct. As soon as submitted the comment I realized my mistake.
Let it be seen this way: the people of ACC do produce good Universal Motors, but probably too big for our friend Brown Warrior (the others call him Charlie). If you are able to get a "precious" catalogue of ACC (first you have to buy 100000 motors, then they allow you to know about existing documentation ! The documentation that shoud help you to buy ! ! ! ) there was (in 1995) a chapter that is giving you the directions to choose the right motor for your application . . .

I read the original invite from Brown Warrior as a question on the topics to be considered into accout when choosing a motor. In the comments we helped him to realize that between these he has to look for:

* casing dimensions

* voltage, Amperes, line to supply to it

* output Power (at the shaft)

+ intaken Power (from the line) sometime they differ more than 100%
or you may say efficiency is less than 50%

* speed

+ possibility to control this speed

* torque

+ extra torque at start

+ torque variations during a single turn

* working temperature (or motor class)

+ allowable overheating

+ air flow and clerarance requested to position it

+ future accessibility

* vibrations transmitted

+ noise generated

* electromagnetic interference

+ radio waves emmisions

+ frequency and electric noise inducted in the supply line

. . . .

these discussion are a help to point out problems and share our culture.

So again and sincerely:

Thank all for your help and contribution:
we do not desire to give wrong suggestion to Brown Warrior.
None is aiming to design a motor (another ? there are already good factories ! ? )
Still is pending the original question :

If someomne is not friend to a group of electrotechnics, how can he find all info to know before choosing a motor ?

Thanks everyone! there is some really usefull stuff there!

If I was you I would go to either a garage sale or Sears and buy 3 or 4 of them and tear them apart - reverse engineering - pay attention to what ever motor overload protection is in them - very important - also check with UL (or thrid party ETL) about approving your creation.

When you figure out what size you need and you have the spec in hand for the motor - contact Gary at;

garyh@kwautomation.com

for the best price on large quantites of motors

tell him "smarty" send you.