Drill - boring bar combo lathe tool

[Smit]

Does anybody know of a tool that will drill a hole and then can be used as a boring bar to rough the bore out? We have an old one that works but it's very slow on the drilling portion.

 

Thanks!

[Mike@Lustre]

I have used a U drill to drill the hole then open it up to a rough bore size

 

http://www.sandvik.coromant.com/en-gb/products/t-max_u_stack_drill/pages/default.aspx

 

 

something similar to this , I have seen some solid carbide tools that can do similar procedures , just cannot remember where I seen them or what brand they are .

[G Zero]

ISCAR has a whole line of multifunction tools .... I have never used them just was looking at getting one a while back.

 

https://www.iscar.com/eCatalog/Products.aspx?mapp=MF&app=242

[Eric@HorsepowerInc.]

Does anybody know of a tool that will drill a hole and then can be used as a boring bar to rough the bore out? We have an old one that works but it's very slow on the drilling portion.

 

Thanks!

Iscar, as mentioned. We have 4 or 5 of these in various sizes, they work very well.

[Rocketmachinist]

Since the subject was brought up, how do you program for these things in Mastercam?

 

Sent from my SM-G900T using Tapatalk

 

 

[3rdstring]

Since the subject was brought up, how do you program for these things in Mastercam? Sent from my SM-G900T using Tapatalk

 

 

I would use different tools with the same tool Number but different offsets

[Eric@HorsepowerInc.]

I would use different tools with the same tool Number but different offsets

As a boring bar always! One offset, first pass done at tool dia. or + maximum 1st pass offset as designed by tool mfg. Then the rest is straight forward as a boring bar, no math needed to find what dia. it is cutting at.

[Rocketmachinist]

OK so when I drill it would be t0101 but then boring t0111. Damn that is a way simpler way to program than what I was thinking

 

Sent from my SM-G900T using Tapatalk

 

 

[Smit]

Thanks guys.

 

That Iscar tool looks to be just the thing I'm looking for.

[guitar]

OK so when I drill it would be t0101 but then boring t0111. Damn that is a way simpler way to program than what I was thinking Sent from my SM-G900T using Tapatalk

 

 

Actually, just one offset. Just start boring slightly off center. No drilling op needed. You NEVER want to drill on center with a U-drill on a lathe if you can avoid it. By drilling off center you create alot more room for chip flow and the flute with the center cutting insert won't rub the back wall when chips get wedged in there. This prevents galling and tool burn up. Always use a straight flute insert drill for lathe work for better chip flow. Your tool manuf will recommend the amount you can drill off center. I would recommend Sandvik insert drills or Mitsubishi.  One more suggestion. Try to program the back wall of your bore (if there is one) with a taper. This will prevent the drill from "barking" when it hits the back wall.