Super Drills

[AllOut]

For any of y'all that are interested in machining, I just took a little video for fun...
This is a Super Drill doing a 9" deep hole in about 30 seconds
We use to gun drill these holes and it took about 10 min per hole and used a new drill for ever or everyother hole. These Super Drills do it it a fraction of the time and last much longer doing it... We've been getting about 400" per drill on these before changing them out.
[Broken External Image]

http://i585.photobucket.com/albums/...9-A802-036DC451D3BC-7702-00000ACCF2744B58.mp4

 

[j-dubb]

What is the bit made of? What were you drilling into, Stainless? Impressive regardless if you went from changing one out every other to a long run. What about cost? I'm sure it was costly to change out bits all the time but who knows if the new Super Drill Bits are crazy expensive?

 

[NikatKimber]

Does that drill have a coolant core? Cool!

 

[dyabolical]

It is called Through Spindle Coolant.

 

[AllOut]

Ya it through coolant
We do a lot of 400 series stainless a lot with high chrome % and Inconel here.
It's a carbide drill with a coating, it cost about $300 just to have the resharpened and recoated lol

As far as cost goes, it's over $100 per hour on this machine. With a standard gun drill it takes about 12 hrs just to gun drill (8 holes on this part) in Inconel. That's also using about 3 drills per hole but we regrind our own gun drills. With a super drill I can drill all 8 holes in about an hour or so with one drill.

 

[Johnny]

What diameter is that drill? Brand? We are drilling 410 and 4130 6 inches deep with some 1/4" parabolic drills. I would like to check these out. Pretty cool.

 

[AllOut]

That's a .462 dia drill, they make a few different sizes.
Mitsubishi makes them and so does KennaMetal. The Mitsubishi are a lot better, KennaMetal copied them after we started using the Mitsu to make us buy them cause we are under contract. They didn't make them at the time so we could buy from someone else but now that they (KennaMetal) are making them we are obligated.
You need to run the start drills with them though or predrill a smaller hole and milled it out the exact size of the drill.

 

[twocan]

That's a .462 dia drill, they make a few different sizes.
Mitsubishi makes them and so does KennaMetal. The Mitsubishi are a lot better, KennaMetal copied them after we started using the Mitsu to make us buy them cause we are under contract. They didn't make them at the time so we could buy from someone else but now that they (KennaMetal) are making them we are obligated.
You need to run the start drills with them though or predrill a smaller hole and milled it out the exact size of the drill.

How do they do on braking though to a existing hole? And who is your mitsubishi rep?
Also your gundrill operator must be retarded.