How we can inspect small object at all the side without touching it?

<sigh>

What is the size, weight and materials-of-construction of the object? What temperatures, pressures and fluids does it encounter while it is being rotated?

A vacuum will not allow you to "float" anything. You would need an anti-gravity device, or if it has zero boyancy, suspend it in water. Since the gravity device is probably still top secret I would look to find out why it cannot be handled. If contact with hands or other contaminents is to be avoided, just getting it to the device for inspection will be extremely difficult. If it can be handled by gloves, tweezers or other small handling devices, design a clamp or holding device that can be manipulated on an X and Y axis. This should allow you to inspect the device without too much handling. Short of creating a clean room or inspection box with sterile handling and transport, you definitely have your job cut out for you.

Good Luck

Far more information is required as any solution we propose here will most likely not be suitable for your special application due to a condition you have not stated. Please detail exactly what the product is, why it cannot be touched, how much product you expect to be checking each minute or hour, etc. Also please state if you are trying to use manual visual inspection or some sort of automated machine vision camera inspection system.

Just off the top of my head I would say why not move the product onto a clear plate and use multiple cameras (or one or two rotating cameras) to inspect the stationary product from all sides. Sometimes it is easier to inspect the product when it is stationary (of course this may not be possible in your application).

More information please.

Hello Guest,

If you please advise details asked for in above Posts, also add the following:

What the "Inspection" is to actually achieve:

1. Is it just a 'visual inspection'
2. Is is for size comparison
3. Colour comparison
4. Quality Assurance
5. Is the article actually be allowed to touch anything
   
6. To detect (analyse) the materials the inspected object is made from
7. Is the article inspection a health requirement
8. Is the inspected article a food product
9. Is the inspected article radioactive
10. Is the inspected article 'Biologically Active' - Specify please
    
11. There are more - Specify please.....

Once more details are available, with .....it may be possible to assist you.

Kind Regards....

Dear Friends,

We are in precious stone business. Daily we have to inspect stones in quantity. It is effecting to eyes as well lead to seveiour back pain. We also can not put full trust on subordinates for process.

Microscopeic inspection, camera vision, x, y stages inspection can inspect the stone up to 180 digree vision and for rest part of the stone again we will have to pick and put stone for further inspection but the physical problems can not be avoided.

So the system shall be

1] hasel free, accurate and fast

2] can be operated through good software and control by kaypad or joystick.

3] No area shall be left for inspection

I think to use 6 axis, good quality camera system, one side air flow to lift the stone and vaccume to hold the stone in air.

As i am not a technical person, beyond this at present i can not think.

Please suggest your views.

With good wishes

This can be done but the way you describe it, it would be very expensive.

Practical solutions, letting you inspect your stones from every angle, and for internal defects are thinkable but will cost you 10's of thousand dollars at best.

See this US patent.

Hello bankimbhatt

I am assuming you were the original Guest, and have now registered.

If so, thank you.

Are the precious stones:

1. Raw state?
2. Raw but now cleaned and uncut?
3. Split/cut?
4. Cut and polished?
5. The same type:

• Diamonds
• Rubies
• Emeralds
• Sapphires
• Other - Advise which stone type please.

The same:

• Size
• Weight

Are you intending for an automated system to inspect stones for flaws? If so, at what stage or stages of processing?

I would be sure that for sorting diamonds in the Raw, de Beers and others would have such a system, probably optical and X-ray.

If you are dealing with different types of precious stones, and in a variety of sizes/states, it becomes quite complicated.

What volume per unit time are you hoping to sort/inspect?

Looking forward to your reply with

Kind Regards....

Ah, ok, this makes more sense. But I have one question - are you grading rough stones or cut stones. That is going to make a huge difference.

Precious stone inspection is a little different to say, inspection of cereal boxes off a production line. It can be done but will be expensive and complicated.

How many stones are you currently inspecting per hour now, what is the grade of the stone (ie- how fine an inspection is necessary - is it a scan of a raw product or a final cut gemstone, are you inspecting for flaws or performing an inspection of the final cut) and what do you think you are willing to pay for a system, $10,000, $100,000, $500,000, $5,000,000?

Based on all available information you may be better off just upgrading your existing inspection system (better chairs, better magnifying optics and lighting, better inspection area, better gem support allowing easier 360 degree inspection, etc). For a small scale business with a small product turnover this may be your most cost-effective option (you really cannot easily beat the trained eye of a craftsman). The other option would be to research what the other major players in the gemstone industry use (there may be a company that makes this form of specialised equipment but it WILL be enormously expensive).

What specificial of gums do you want to measure? or inspection?

there are auto size measuring gauge, color test and hardness test gauge.

if you hope to indentify the true or not of a gum, this gauge will be very expensive, and cannt process all kind of gum . at last, you have to judge it by experience man.

china guangxi has the lagest processing and deal in market. thats why I know a bit.

If you can hold the object in "mid air" with unobtrusive objects (eg fine needles) you could do your inspection using several digital cameras from all sides simultaeously

Can you revolve the inspectors?

Visit www.nextengine.com. They have a $2,500 laser scanner that will do a 3d digitization of a small object without touching it.

As others have said more information as to the properties of the objects are needed.

If the size to weight ratio is high (big with low weight) and the shape is correct then laminar flow air might work to suspend the objects.

Perhaps the object could be suspended in a magnetic field?

As another poster pointed out there are many ways to image the object to make measurements. But suspending it "without touching it" is the trick.

Do you mean?

1. Part is placed in a vacuum chamber?

2. It is suspended halfway so as to be able to see all sides?

3. It is so small that you need a microscope?

4. Rotation=manipulation? Handling?

If not; please clarify!

vaccum cannt support any object on the earth, unless you are set into space far from eath.

you can use magnetic field foat an object, which must be made of metal. you can use compress air to float the object, its very difficult to impliment. you can use electric field to complete it, which the object has to be brought electric charge.

If you want to inspect inside of object, I suggest strongly you use radiographic method.

use x-ray radiography with real image system, you can view real time the inside of object.

If you are interested in it. I can offer your whole system, and can take your project if its a great deal.