Special diamond drill requirement - can you help?

Question

Hi, all!A friend of mine came to me for help.  He has a special piece ofequipment that uses a custom diamond drill bit.  (I am not sure, but Ithink it is for drilling anchor holes in rock.)  He has lost hissource, and we are trying to find an outfit for him that can duplicatethese bits.Pictures of them can be found here: body diameter is 0.375".This is a very interesting bit.  It looks like industrial diamonds inbraze metal.  There is a clear hole through the center for coolant(?), and three flutes around the diameter for the coolant to flushout.I don't know much more than you do, at this point.  I am sure one ofyou will say, "Ah-ha, I know exactly what that is!....."The question is:  Who can make me more of these?Thanks for your help!  You're a great group!-Spencer

Mawdeeb · Accepted Answer

Try search with key words core drill bit. Looked briefly and found the following: luckJim VrzalSpencer wrote:

Spencer · Answer

Thanks, Jim.

The difference is that my bit is not a core bit. It makes a hole, whereas a core bit takes a core sample. The coolant is flushed through a tiny hole in the middle to wash the swarf back around the periphery.

I appreciate the effort, though!

SW

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Edward Hennessey · Answer

The people at Brunner and Lay should be able to advise you even if they can't supply the item. On my drill steels, the hole down the center of the drill steel shaft uses air which can be either supplied by the compression of the drill or by an external source to clear away the accumulated chips to facilitate faster drilling. Usually, only the large pneumatic rigs use water to flush the drills.

Regards,

Edward Hennessey

Special diamond drill requirement - can you help?

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