ultrasonic drillers

"type of drillers that are must be carry bull by a men"

What the heck does that mean?!

Anyway, I just Googled the term "ultrasonic driller" and got lots of hits. Take a look for yourself as to what's available.

Good luck!

"type of drillers that are must be carry bull by a men" I believe that Vinay is trying to say "carryable [i.e., able to be carried] by a man"

So, what you're saying is he was trying to say "carriable" (which isn't really a word) by a man, but it got munched in the translation?

Carryable?? = Carry Bull -- able to be carried by men -- that's my guess, who knows though, maybe they really need to carry a bull somewhere and he can break the stone.

Try this --Results 1 - 10 of about 855,000 --- google for ultrasonic drill. --- (0.13 seconds) http://www.google.com/search?hl=en&q=ultrasonic+drill&btnG=Google+Search

Verm, there are those water-spitting cutters used for precision CNC cutting and drilling of fiberglass PCB boards, and for dry carbon-fiber shaping, and those spit repetitive water micro-bullets at 20 to 40 kHz rate. The water actually evaporate in the process, but manage to keep the material being cut, reasonably cool, hence no thermal fall-out, in the form of jagged edges.

It was developed in the eighties, and widely used in the PCB manufacture industry. Can't recall how these are called

Woof!!! I've seen a lot about water knives (even liquid nitrogen knives), but I seemed to have missed out completely regarding the "spitter" cutters. Got any links?

I'll get to it. What are these knives like? How do they work? Aren't we talking about the same?

The ones I've seen spray water out of a small nozzle at about 50,000 psi. Will cut through anything and polish it while it's cutting.

Yup. Just about. They spit the water in repetitive iteration of above 20kHz. What are these called?

They're usually called "waterjet" or "water jet" cutters. But I've never seen a man-portable version (which does NOT mean that they don't exist!), and I don't think that they are anywhere near silent. They can use pure water, or water with an entrained abrasive, and will cut just about anything there is. Combining ultrasonics with an ultra-high pressure (UHP) water jet would up the ante, but likely add more complexity & weight, and require more power to run.

I always wondered, if the emitted jet is so abrasive, how are they able to preserve the nozzle's integrity, with even minimal use? It does after all take a lot of abuse, just trying to focus the jet

I think the nozzle is made of Al2O3, synthetic sapphire, which is very tough and they add the abrasive particles late in the game.

http://www.wjta.org/Book%203/2_1_Kirby_&_Kramer.pdf

Thanks for the link, it was nice to go through it. It was an opportunity to get an actual example to read about.

The orifice can be a ruby, which is consumed in about a 100 hours of operations, they also have diamond which is consumed in approx. 500-1000 hours of operation. Diamond orifice is also 5 time more expensive. this is what focus the water stream. (approx. 3 GPM)

The abrasives are drawn into the head by a venturi effect and is incorporated with the focused high pressure water in the mixing tube

It also varies with the flow rate of garnet (abrasives), size of mixing tube generally about 0.030 (mixes the abrasives and water) and metering disc (meters the abrasives 1 - 5 lbs/min)

The mixing tube and orficises are considered as consumables.

The intensifier only (pump) on a water jet is not very portable

What is the name of the bank? Some banks have detectors for high frequency drilling sounds and they call the cops.

There are a number of methods that doe this. Most silent ones need a coupling fluid and a fine grit that does the cutting = it cannot be allowd to leak away = in a tank or underwater.

more details

hello aurizon i am vinay.i think that drillers what i was asked are not correct one for bank robbering my friend.i was ask very small drillers drill 3 to5 inches only.i want a driller for drill holes in rocks without any disturbs to others.do you know that type of drillers please tell me were i can get that drillers.that are carryable my men.someone tell search in google.but that searches are not satisfying me.

good buy sir

Vinay, Just a bit of humor. If the drills are ultrasonic, they are silent, except to dogs, bats etc = ideal for burglars unless the banks have dogs on duty.

Even silent you are breaking material = energy input = need for cooling. This cooling can be air or water and this working fluid will make some noise and have some other aspects that impact the workplace, like 100 gallons per minute of cooling fluid on the floor or in the tank you work in.

http://www.google.ca/search?hl=en&q=%22silent+drilling%22&btnG=Google+Search&meta=

I do not know about how silent, it depends what freqency is needed needed to break up the type of material. (find its natural resonances)

That link you posted has some interesting info.

hello aurizon.i want a silent driller drill soundless to peoples.please tell me ultrasonic drillers also need cooling.please tell me were i can get that drillers.

Exactly why does it need to be soundless? Hmmm? Can you come up with a good reason within the next 60 seconds? GO!!!

60 seconds is over, but I still have a good reason.

Depending on the frequency of ultrasonics, not only can humans hear it, but in a relatively short time it can cause damage to the hearing.

Is that a good reason? ……

I SAID IS THAT A GOOD REASON?

Well, like, so you've never heard of ear plugs? Did hear about them only after you turned deaf?

Have you worked with ultrasonic cutters or drills?

One thing about ultrasonics, if it hits the right freqency, ear plugs does not help. I know certain electronic ear protection that has a feed back that cancels the sound works, but they are not always on the shelf.

One more thing the freqency does not have to go through the ear canal to be irratating.

(no jokes about, which canal it uses, please)

Soundless to peoples ! Is it related to sound pollution .I think cost effectiveness , safety , handling , workability are important things to consider rather than sound(noise) , you have option to sound proof your workplace , if it is in outskirts still noise generated is negligible compared to noise blasting in other forms

You can do it with a diamond drill. What size holes are you drilling.

hello guest.size of the holes is 2 to 3 c.m diemeter.depth is 3 to 5 inches

The most cost effective method is probably a diamond core drill. Ultrasonic drills require substantial electric power. I've never seen a portable one.

high speed water jet cutting machine is better option , it has CNC control , it has ability to cut high tensile steel , granite stone , marble stone etc upto 1.5 meters thick. manual portable models are also available but need proper installations to operate & control , they are quiet compared to drilling but not silent as though .

little googling!