Vibrating Motor

What about frequency? Does the vibration frequency matter or just the force?

Steel hitting Steel at an equivalent strike force of 15.96N or 3.59 ft/lb. will produce the vibration that I need. I do not know how else to express the values. If I could measure the vibration some how, or use a formula ? Iam not a engineer just a jeweler try to make a new tool. wow..you guys don't waste any time. I appreciate your inputs.

I am willing togive you the best support as soon as I understand what you need:

- do you want a tool acting by pulses in one direction? or one which generates a circular force with the magnitude you mention?

- those pulsations should be frequent ? how many times per second? minute? hour?

- is it a hand tool or will it be on a support?

- the pulsations have to be smooth or brutal (as a hammer stroke?)

Those questions are only here to make your requirement clear since we are (or at least I am) not wizzards and we cannot read your mind.

Hello nick name:

The term I would use is "Blood out of a stone"?

Maybe we are supposed to be mind readers????

Frustrating in it?

Take care and happy new year...............

Get a normal motor and put an offset ring on the end

Sounds like what you want is a solenoid instead of a motor. Have you looked at electric nail guns lately. They produce a pretty good punch for their size.

You use units which are different: do you want a force (N) or a force/length (lb/inch)? It is not clear.

Steel hitting Steel at an equivalent strike force of 15.96N or 3.59 ft/lb. will produce the vibration that I need. I do not know how else to express the values. If I could measure the vibration some how, or use a formula ? Iam not a engineer just a jeweler try to make a new tool. wow..you guys don't waste any time. I appreciate your inputs

Welcome to CR4. Hang on and enjoy the ride. There are some very high force vibrators designed to shake the air pockets to the surface in wet concrete. If you don't have any thoughts on where to find specs, you could try WWW.grainger.com, or WWW.mscdirect.com. both are industrial supply warehouses. Good luck.

Hello Bruce and welcome to the forum.

There are some details that will help the people provide the advice that you need, so I'll try to anticipate some of the questions that will need information from you.

How often do you need the striking device (hammer) to hit the target material? Once, twice or "many" times.

How frequently do you want the hammer to hit? Once per second, Twice per second or many times per second.

How do you want to control the number of times the hammer strikes and does it matter if the hammer cycles another 15 or 20 times?

Do you want the hammer to strike once per time you touch the switch or to keep cycling until you switch it off?

Do you want the frequency of striking to be variable? (Like the variation available on a sewing machine using a foot pedal controller.)

I'm also assuming that you have calculated the force required to be 15.96N which converts to be 3.59lbs. (Some of the "purists" will see 3.59ft/lb and to them that is a torque and so is different unit and may cause some confusion.)

In your size requirement, you've only given two dimensions (2"x4"), some will want to know does this mean (2" square and 4" long) or (4" square and 2" long) or even (2"x4"xunlimited length)

I presume by the units used that you're in USA, but please confirm power source intended for use.

Now for a suggestion. I have used a pneumatic "nibbler" tool that would probably provide the forces that you mention with the air pressure turned down. Available from many hardware stores like "home depot" and the hardened end of the nibbler pin might be suitable for your task.

Anyhow, welcome and I sure hope that we can help.

AGAIN WOW,and THANK YOU ALL. yes I'm in the states. I can produce the vibration by using a 115 volt flex shaft motor running up to 3000 rpm and a badeco 117 hammer hand piece striking(@ 15.96N) a steel ring mandrel. the flex shaft has a foot pedal to control the speed, which is not necessary on this project. i would like it to continue to cycle until turned off. Originally i was looking at piezo or magnorestrictive transducers however without cavitation i believe they do not provide enough punch. The dimensions are max. 4' long and 2" square.

Hello Bruce,

Hope you are well?..........Tell me, are you beating something like gold, or making jewelry? If we knew what you were doing it would make things easier and save a lot of 'wasted' searches. Any chance of a little more info please?

Take care....................

Hello Bruce,

The first couple of sites explain in detail how to make a vibrating motor. Though I think you will have to play around with the weight or whatever is used to make it vibrate at the strength you want.

http://www.google.co.uk/search?num=50&hl=en&q=Vibrating+motor+&btnG=Search&meta=lr%3D

• How to make a vibrating motor. Sometimes you need a vibrating motor but just don't have a spare massager on hand to take apart. This usually leaves you...
  www.instructables.com/id/How-to-make-a-vibrating-motor./ - 150k - Cached - Similar pages

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  Connect Leads To Vibrator Motor
• 21 Jul 2008 ... Connecting 2 wires to the 2 leads on the vibrator motor is waaaayyyyy more difficult than I anticipated. Try it yoursel...
  www.instructables.com/id/SVGZP3YFGWUC1ES/ - 87k - Cached - Similar pages

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• Vibration motor Manufacturers & Suppliers Vibration motors Manufacturers ★ Wide Range of Vibration motors ★ Choose Verified Vibration motors Suppliers.
  www.globalsources.com/gsol/I/Vibration-motor-manufacturers/b/2000000003844/3000000157581/17779.htm - 119k - Cached - Similar pages

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  Vibrating Motor Manufacturers & Suppliers
• Vibrating Motor Manufacturers ★ Verified with 3 or more face-to-face visits by Global Sources ★ Choose Verified Wholesale Vibrating Motor Manufacturers ...
  www.globalsources.com/manufacturers/Vibrating-Motor.html - 135k - Cached - Similar pages

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  More results from www.globalsources.com »
• Robot Room - Removing Weight From Tiny Vibrating Motor How to remove the offset-weight from a tiny vibrating pager motor using a Vise- Grip locking plier. Also, how to remove a gear from a motor shaft.
  www.robotroom.com/TinyMotor.html - 16k - Cached - Similar pages

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• Vibrating Motor Vibrating Disk Motor - 14mm (0.55") diameter, 3.5mm (0.15") thick. This little vibe motor is quite unique in that it is fully self-contained - no visible ...
  www.hobbyengineering.com/H1207.html - 33k - Cached - Similar pages

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• Vibrating motor, vibrating motor casing and vibrating device ... In a vibrating motor, an eccentric weight is attached to one end of a rotation shaft that projects linearly from a motor housing. The vibrating motor causes ...
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  Take care and keep in touch. What are you using this for, if one be be so rude?
• Happy new year..............

Sounds like you are trying to make an power engraver or a small mold vibrator to remove air bubbles. Without an application your needs are a little vague.

Air pressure, Vacuum, hydrolic, or electric Powered? Motor/solenoid remote or single unit.

Is the force to be used in a single direction like an engraver or orbital like a sander?

The 3.59 ft/lbs, is this used as a single pulse like a nail gun or repeatedly like a tattoo gun?

Too many options.

Brad

I had a look at the Otto Frey cat to understand what you mean. I would like to ask you verify following explanations and either OK it or correct it if necessary since not being from your profession I do not know if I understood it the right way.

The tool consists of a moving mass which strokes an anvil on one or 2 springs and which hammers the piece you keep in your hand or in a holder. With respect to the piece the anvil becomes the hammer. The strokes are axial.

What you want is to get a motor which moves the internal hammer and gives a force of 16N when the anvil is pressed on the piece. Is it right or wrong?

OK. my design is a table top 115 volt (with a power adapter)box,and a vertical adjustable 12' to 22' arm. a 90 degree turn at the top for about 6". then a "head" which is approx 3" square x 9" long. the head needs to vibrate. jewelry will be held or placed on the head to show the loose stones which will then be marked and tightening at the bench. The hammer hand piece hitting the steel mandrel @ 16N produces the required vibration. Can this vibration be measured and converted into say MHz ? or some other kind of sound wave measurement ? can a piezo transducer produce theses vibrations or a magnetostrictive transducer or some kind of vibrating motor which would need to be small and reliable. this unit would probably run about 15 min at a time approx. 10- 20 times a day

I would suggest a totally crazy idea now that I know what you aim at: use a loudspeaker!

Connect the moving armature of a strong loudspeaker via a stiff bar (best ceramic since it is light and stiff) with the table you put the jewel on. You find a lot of power supplies for loudspeakers and also wave generators for sinus or square waves at realy low cost in electronic supply DYI shops. You can have the benefit of a low cost equipment able to work up to 20kHz and a simple low cost amplitude and frequency setting via 2 potentiometers. If you have such a shop near to you they will help you to get the best components. The cost is quite small so that it is worthwhile to try it. If you do not have good results use a moving coil actuator fom BEI (US) to obtain same function and better results due to higher power.

There is a certain segment of the population that drives mobile versions of what you are describing.

Perhaps the police impound auctions would yield a mobile version. With some minor adjustments, they can actually produce music.

You may have the answer though. A variable tone generator, and a simple high powered amplifier. Connect a high wattage speaker to a piece of thick PVC pipe, and install the other end of the pipe to the bottom of the work table. I would think I would use 1/2" thick HDPE for the table surface.

You could adjust the tone, and volume. The PVC would help focus the pulsations to the table.

Looks good from where I sit.

I shall explain why I suggested the ceramic connector.

The tone generator has a very low mass. If it is connected to a working table we add a mass so that more energy goes into acceleration and this will limit the frequencies or for a given frequency the amplitude. Now if the connection is a PVC bar it has a low density (about same as ceramics) but a very low Young modulus which leads to a high deformability. This bar works between the generator and the table which mass has to be moved, if the inbetween connector deforms a lot then energy goes in this deformation and the amplitude of the table will be reduced even more. Conclusion if we want a good result the connector has to be low weight and as stiff as possible. Qed!

You my friend have more knowledge of the harmonics involved I am sure. I was attempting to make a speaker enclosure that used PVC pipe as as a method of attaching a speaker to the table. I felt that the density of the PVC would keep the speaker movement from trying to spread out, I was shooting for the speaker movement to only be restricted by the bottom of the table. Your design was more complicated and accurate than I had envisioned.

Thanks for the detail of explaination. Stones that are not held secure in the jewelry will be able to be seen to move independant of the setting while it is vibrating. Purpose:diagnosis of loose or poorly set gems.

It's now a question of "What is your budget?" We use vibration feeder bowls where the excitation is electronic. These provide adjustment for amplitude and frequency and can provide gentle vibration through to quite robust agitation through very simple dial controls. They are not cheap, but provide "industrial" performance over years of continuous use.

A lower level of finess would be to have a small balanced electric motor (firmly) attached to the platten where the jewelry will be mounted and on that motor shaft have an eccentric weight to provide the vibration action required. This would not be great for the motor bearings, but you may get quite long service from such an arrangement.

You all have been very helpful and patient. I now have some avenues to explore. Could you also point me in the direction of these vibration feeder bowls. Please and Thank You. Bruce

Try this site http://motion-controls.globalspec.com/SpecSearch/Suppliers/Motion_Controls/Motors/Vibrator_Motors?SrchItem=4&frmqry=Electric%20Vibration%20Equipment&kqid=167674731

that comes from GlobalSpec for information in the USA.

Our equipment is made of components from either "Arizona Gear and Mfg Co" Tucson Arizona, 85716, (1800 562 3648) [One unit that we have from them has an exciter unit around 1.5" square and 2" long that is used to "shake" our parts feeder rail in one axis.]

Or from USVibra at 1955 Grant Road Tucson, AZ 85745 1147 or phone 520 624 3709.

These details are straigh off the name plates and I suspect that you will recognise which are phone numbers and which are ZIP codes.

Our local fabricator is http://www.yellowpages.com.au/bi/arnold-v-pty-ltd-mentone-vic-433275.html and they might be able to recommend a supplier on your side of the world to develop the fine details. He gets the vibration units and controllers and supplies us with a system to suit our parts.

China has many such stone processing tools for selection. and vibaration motor can be worked in a low voltage like a mobil phone used.

try to find then at google.