Brings back memories. We used to drill 12" into steel and inconel shafts using gun drills in a Mazak. We had to sharpen the gun drills by hand with a bench grinder next to the lathe. Nice operation you have there.
Great job Peter!! Always looking forward to the next video. I've learned quite a bit from you and have seen things I never would've gotten the chance to. Cheers to future videos!
Based on the threads used, it looks like those parts mate with oil-well drilling pipe. The part with the round bores cut in the side may be a down-hole sensor, camera, or tool, or those bores may to hold the explosive charges that are used to perforate the drill pipe during well-completion.
Brutal material. Running some right now, nuclear work has numbed me to anything else lol. Inconel monell hastelloy nitronic... I'd give my left nut to run some aluminum or mild steel again!
Hey, You use ESPRIT for your mill turn programming correct? I'm just starting to use it and it's quite overwhelming. Trying to set tool models for out NTX2000, have loaded the STL and configured it tot he axis but not sure how to correctly position and orientate the tip for collision detection. Hey if you ever feel like doing an ESPRIT video i won't complain :P
Cool video. You would get more out of those drills if you were using a Haimer Shrink Fit holder. That taper looks like Capto C6. Im sure they make a holder for that diameter. Food for thought
Those parts you didn’t know what they were with the threads are used for drilling oil. They have T2 threads probably thread protectors or test caps. I work in the oil field so I see them all the time. The other is a tool probably use for seismic readings to figure the out the surrounding area to know if the formation is soft or hard.
Hi, Could please advise if there are any device that can check the wall thickness of gundrilled hole when part is drilling in gun drilling machine? Please help to introduce the model of this device. Thank you for your support.
Do you prefer gundrills to spade drills, twist, 4 flute, solid carbide, & all the other deep hole thru coolant options available? If I'm going to drill on a drill press or a VMC w/ a coolant inducer what would you suggest? (Ø.438 x 12in 6061) Great videos!
Hello, I would like to ask your opinion on this subject. I got a lathe job to machine stainless steal shafts 600 mm long with an 8mm hole thru them. For this job I plan to use an Okuma lathe with 1000 mm between centers, and drill 300 mm on each side. My question is : should I buy a gun drill for the job or use a long solid carbide one? Thanks
Why not just send the raw stock to a gun drilling shop and have them drill the hole thru. Than turn the OD concentric to the hole (I also have a video in this). This is pretty much the way we always do it. the only reason I was drilling these is. They were in a hurry here and the drilling shop couldn't get to them in time. To get them drilled will cost you less than to do it yourself. It will probably cost you less than the tooling to do it. But If you insist on drilling yourself your machine needs high pressure coolant to use a gundrill or even a long coolant fed twist drill.
I will be drilling a Ø.316" hole 18" deep using a gun drill for the first time on a 50 taper horizontal CNC mill with coolant thru the spindle. Do you have any tips? it will be my first time using a gun drill.
You shouldn't have any problems in that material. Just don't feed the drill to fast. Gun drills don't like high feed rates. I would say in aluminum somewhere between .0005-.001" per rev. Gun drills don't sound good when running. I think a good starting point would be 3000 RPM at 2.25" per minute. That would be safe. You can speed it up from there if you need. Drill a pilot hole first about 1.0" deep (Make sure the drill fits in the pilot hole!). Either rotate the drill slow or not at all until you are in the pilot hole without coolant on. Turn the coolant on speed up to cutting speed and feed in, no pecks! Watch the coolant stream coming out of the hole along the drill as it drills. There should be a constant flow with small shavings. If not there is something wrong. Stop and find out what that is. I will say this again you cant feed to fast or the shavings will not be blown down the flute with the coolant. Watch the flow coming out of the hole. Listen to the sound. They tend to make a chattering type of sound. But as long as it is consistent and not changing everything should be OK. It's the first hole that is the most nerve wracking, after that you will know what to expect.
As to drilling a Gun barrel's bore. I'm not sure of the size before rifling? I don't do gun barrels. You will have to do some research on that. Depending on where you are. There are many manufactures of gun drills. Drill Masters/Eldorado Tool, Star Drill, Iscar, Kadia, Sumogun, DeepTdrill. To name a few. As to where to buy them? I buy most of mine from a local (To me in Houston, Texas) place called Bass Tool. But that, as I say depends on where you are located.
Buona sera . Sto per acquistare integrex 400 st ! Vedo i suoi video e prendo ispirazione .. vedo che utilizza un mandrino non idraulico c’è un motivo ! Vedo che utilizza un secondo mandrino più piccolo ? Il motivo ? Utilizza programmazione mazatrol ?
Thanks Bill. I recently got this video microscope ( Insize ISM-DM40) with the intent of using it to measure things in the CNC tool grinders spindle. Without having to remove the tool from the spindle and go to the comparator. I have found it works good for taking video (HD 1080P) and stills close up. It has a generous focal distance even a full magnification. I do have to make a special base for the grinder so I can mount it and remove it quickly.
just subscribed, gun drilling is a topic not covered a whole lot on youtube . I thought it required more like a 30 wt motor oil type thickness oil that, gaulled drill in the sharpening video is probly a victim of that. but the result your getting looks pretty good some more details on gun drilling would be very interesting and also I think all your camera work inside the case with the bore gauges and all, and during machining are real good little blury here and there but fine
Its using a G81 drilling cycle. Feed at 50 IPM to the R value of the drilling cycle in the hole. Turn on the coolant than the spindle. Drill than retract to the R plane turns off the coolant than the spindle and rapids out. Move to the next hole if there is one. In my software if I set custom setting on the tool to 1 it repeats this cycle on all holes for that tool. No manual programing.
Edge Precision is this a general rule with gun drills, don't start spindle before inserted into pilot hole? Is those all long drills or just gun? Why is this?
You know I get this question on every video I do. I am thinking about how to do a video on this subject.Is really just common sense you add up the costs and you have it. Its the experience on how to judge the cost that's the hard part. I will eventually do a video if I can somehow make it interesting.
I see you don't spin the chuck when using the gun drill. So you're drilling on the drill axis, instead of using the part axis as one normally does.. Surely you would always get a truer hole if you spin the part axis, ie the chuck, whether you're using a gun drill or not ?
hat could be done. In fact it is better to turn both the part and the drill if the hole is on centerline. But on this large lathe the turning spindle doesn't turn a high enough RPM for this size drill. That's why I'm using the milling spindle.
I didn't job these out for the gundrilling. But there are shops here in Houston that specialize in this. The best here in the USA (Or even the world) is a company named Dearborne Inc. Here is their wed link dearborninc.com/
oh man i keep saying that u r awesome wish make a video that explain most important things about parting off in turning according to the hardness of material "feed and speed " etc. ... especially in aluminum love u so much with all my kisses
It totally amazes me the generosity of people. I have been thinking about monetizing my videos to get a little income to offset some new gear as it becomes necessary. My TH-cam views are now getting high enough that I could make a little money(I would estimate $300-400 a month) that way. I wouldn't mind doing something like this or a patreon account also. I don't know how to receive payments. I need to setup a separate bank account. I don't want to tie my normal accounts to the internet.
we have 3-4 big corporations existing out there but none of them even introduce them selves So they should pay you millions of money for your free advertising for them
Brings back memories. We used to drill 12" into steel and inconel shafts using gun drills in a Mazak. We had to sharpen the gun drills by hand with a bench grinder next to the lathe. Nice operation you have there.
Great job Peter!! Always looking forward to the next video. I've learned quite a bit from you and have seen things I never would've gotten the chance to. Cheers to future videos!
Based on the threads used, it looks like those parts mate with oil-well drilling pipe. The part with the round bores cut in the side may be a down-hole sensor, camera, or tool, or those bores may to hold the explosive charges that are used to perforate the drill pipe during well-completion.
that or directional horizontal boring stub ends for the location wand
Soft spoken but mad scientist type, goooood stuff. Always like to see skilz.
Very cool! I watched your sharpening video, but the macro shots of the geometry/cutting edge design in this one are fantastic. Thanks!
That's what that grinder was for, I always used it to touch up carbide but didn't know it was for gun drills. Thanks for sharing!!
If you go to the accu-finish.com web site you will see they make many attachments for these grinders.this is just one of them.
It looks like the shop your in does great work too. Looking forward to the next vid! Thanks again Peter!
That material looks really abrasive!
That material must be wicked stuff if it eats solid carbide like that. I see why they come to you when stuff isn’t working right. Thanks for sharing.
Brutal material. Running some right now, nuclear work has numbed me to anything else lol. Inconel monell hastelloy nitronic... I'd give my left nut to run some aluminum or mild steel again!
Hey, You use ESPRIT for your mill turn programming correct? I'm just starting to use it and it's quite overwhelming. Trying to set tool models for out NTX2000, have loaded the STL and configured it tot he axis but not sure how to correctly position and orientate the tip for collision detection.
Hey if you ever feel like doing an ESPRIT video i won't complain :P
Cool video. You would get more out of those drills if you were using a Haimer Shrink Fit holder. That taper looks like Capto C6. Im sure they make a holder for that diameter. Food for thought
Those parts you didn’t know what they were with the threads are used for drilling oil. They have T2 threads probably thread protectors or test caps. I work in the oil field so I see them all the time. The other is a tool probably use for seismic readings to figure the out the surrounding area to know if the formation is soft or hard.
Another great video. Would love to see your process on how you bid jobs
Hi,
Could please advise if there are any device that can check the wall thickness of gundrilled hole when part is drilling in gun drilling machine?
Please help to introduce the model of this device. Thank you for your support.
Thanks again , looking forward to the up coming videos.
Do you prefer gundrills to spade drills, twist, 4 flute, solid carbide, & all the other deep hole thru coolant options available?
If I'm going to drill on a drill press or a VMC w/ a coolant inducer what would you suggest? (Ø.438 x 12in 6061)
Great videos!
In aluminum I would use a coolant fed twist drill. You don’t even need carbide at that diameter and depth. A HSS drill would work.
Hello, I would like to ask your opinion on this subject. I got a lathe job to machine stainless steal shafts 600 mm long with an 8mm hole thru them. For this job I plan to use an Okuma lathe with 1000 mm between centers, and drill 300 mm on each side. My question is : should I buy a gun drill for the job or use a long solid carbide one? Thanks
Why not just send the raw stock to a gun drilling shop and have them drill the hole thru. Than turn the OD concentric to the hole (I also have a video in this). This is pretty much the way we always do it. the only reason I was drilling these is. They were in a hurry here and the drilling shop couldn't get to them in time. To get them drilled will cost you less than to do it yourself. It will probably cost you less than the tooling to do it. But If you insist on drilling yourself your machine needs high pressure coolant to use a gundrill or even a long coolant fed twist drill.
I will be drilling a Ø.316" hole 18" deep using a gun drill for the first time on a 50 taper horizontal CNC mill with coolant thru the spindle. Do you have any tips? it will be my first time using a gun drill.
What material are you drilling and how much pressure is your coolant?
@@EdgePrecision 7075 AL at 1000 psi
You shouldn't have any problems in that material. Just don't feed the drill to fast. Gun drills don't like high feed rates. I would say in aluminum somewhere between .0005-.001" per rev. Gun drills don't sound good when running. I think a good starting point would be 3000 RPM at 2.25" per minute. That would be safe. You can speed it up from there if you need. Drill a pilot hole first about 1.0" deep (Make sure the drill fits in the pilot hole!). Either rotate the drill slow or not at all until you are in the pilot hole without coolant on. Turn the coolant on speed up to cutting speed and feed in, no pecks! Watch the coolant stream coming out of the hole along the drill as it drills. There should be a constant flow with small shavings. If not there is something wrong. Stop and find out what that is. I will say this again you cant feed to fast or the shavings will not be blown down the flute with the coolant. Watch the flow coming out of the hole. Listen to the sound. They tend to make a chattering type of sound. But as long as it is consistent and not changing everything should be OK. It's the first hole that is the most nerve wracking, after that you will know what to expect.
@@EdgePrecision Thank you so very much for taking the time. I look forward to your next video.
I have a barrel 16mm in dia,I need to center drill to get 8.75mm-8.79mm.what size gun drill should I buy and where can I purchase one?
As to drilling a Gun barrel's bore. I'm not sure of the size before rifling? I don't do gun barrels. You will have to do some research on that. Depending on where you are. There are many manufactures of gun drills. Drill Masters/Eldorado Tool, Star Drill, Iscar, Kadia, Sumogun, DeepTdrill. To name a few. As to where to buy them? I buy most of mine from a local (To me in Houston, Texas) place called Bass Tool. But that, as I say depends on where you are located.
another big jump in subs again, congratz
Its really cool how you grind the drills, what nootbook you use?
My laptop for video is a Dell XPS 15. For cad and cam I use a Dell Alien 18” laptop. The Alien computer is old but it still works good.
I see the three jaw mounted on the four jaw. Very nice.
Buona sera . Sto per acquistare integrex 400 st ! Vedo i suoi video e prendo ispirazione ..
vedo che utilizza un mandrino non idraulico c’è un motivo !
Vedo che utilizza un secondo mandrino più piccolo ? Il motivo ?
Utilizza programmazione mazatrol ?
Just Gundrilled two 8mm dia holes, 3850mm deep in a stainless steel part with only 0.80mm run-off.
481 xD ? , whaat ?
Manual machinist here, love N50(heavy sarcasm)
What gun drills do you use?
Mostly Drillmasters. I have also used Star brand as well.
Some interesting parts there. You could really see the built up edge with your macro shot.
Thanks Bill. I recently got this video microscope ( Insize ISM-DM40) with the intent of using it to measure things in the CNC tool grinders spindle. Without having to remove the tool from the spindle and go to the comparator. I have found it works good for taking video (HD 1080P) and stills close up. It has a generous focal distance even a full magnification. I do have to make a special base for the grinder so I can mount it and remove it quickly.
Looking forward to seeing that in action. I have been looking at their model, ISM-PM200SB for the shop here.
just subscribed, gun drilling is a topic not covered a whole lot on youtube . I thought it required more like a 30 wt motor oil type thickness oil that, gaulled drill in the sharpening video is probly a victim of that. but the result your getting looks pretty good some more details on gun drilling would be very interesting and also I think all your camera work inside the case with the bore gauges and all, and during machining are real good little blury here and there but fine
Yes gun drilling in a machining center is not the most optimal way to go because the coolant isn’t the best. Oil is what works the best.
A day in the life of a really good machinist :)
Hey Peter is that grinder a DM43 for the gun drills?
That was cool to watch.
Does that control have an actual gun drill cycle? I know a lot of the Mitsubishi ones do.
No I had to edit the post to do what you see here. It’s important not to start the spindle unless the drill is in the hole.
Its using a G81 drilling cycle. Feed at 50 IPM to the R value of the drilling cycle in the hole. Turn on the coolant than the spindle. Drill than retract to the R plane turns off the coolant than the spindle and rapids out. Move to the next hole if there is one. In my software if I set custom setting on the tool to 1 it repeats this cycle on all holes for that tool. No manual programing.
Edge Precision is this a general rule with gun drills, don't start spindle before inserted into pilot hole? Is those all long drills or just gun? Why is this?
is there a formula that you use to estimate the cost? if this is top secret I understand.
You know I get this question on every video I do. I am thinking about how to do a video on this subject.Is really just common sense you add up the costs and you have it. Its the experience on how to judge the cost that's the hard part. I will eventually do a video if I can somehow make it interesting.
Even your simple parts are quality
What grinder are you using for resharp
Look at my video “Sharpen a gundrill” I explain all of that.
I see you don't spin the chuck when using the gun drill. So you're drilling on the drill axis, instead of using the part axis as one normally does..
Surely you would always get a truer hole if you spin the part axis, ie the chuck, whether you're using a gun drill or not ?
hat could be done. In fact it is better to turn both the part and the drill if the hole is on centerline. But on this large lathe the turning spindle doesn't turn a high enough RPM for this size drill. That's why I'm using the milling spindle.
Hi. Where can I get the driller?
I didn't job these out for the gundrilling. But there are shops here in Houston that specialize in this. The best here in the USA (Or even the world) is a company named Dearborne Inc. Here is their wed link dearborninc.com/
Thank you for post the speeds and feed
oh man
i keep saying that
u r awesome
wish make a video that explain most important things about parting off in turning according to the hardness of material "feed and speed " etc. ...
especially in aluminum
love u so much
with all my kisses
great!! keep em comming
Nitronic 50 was the most nasty material before I got the experience on inconel🤣🤣
i'll bet you Nitronic 50 and inconel are no match for the 20,000deg Celsius that you get in an EDM. even diamond is no match!
If you want to run a crowd-source campaign to defray or cover a new camera I can chip in some.
I really appreciate the time you spend sharing your knowledge and experience with us. I would really like to contribute toward your new GoPro also.
It totally amazes me the generosity of people. I have been thinking about monetizing my videos to get a little income to offset some new gear as it becomes necessary. My TH-cam views are now getting high enough that I could make a little money(I would estimate $300-400 a month) that way. I wouldn't mind doing something like this or a patreon account also. I don't know how to receive payments. I need to setup a separate bank account. I don't want to tie my normal accounts to the internet.
set up a paypal account so we can send you a few bucks !!
the horrors of production runs
You have a nice stuff. try to use antirain for you camera
I will look into that Thanks.
You can machine the bad part for your GoPro.... ;)
we have 3-4 big corporations existing out there but none of them even introduce them selves
So they should pay you millions of money for your free advertising for them
Mi amigo veo tus vídeos y que trabajos tan espectaculares haces....Muchas gracias
Veo amigazo que tienes mucha sabiduría en CNC.....
There oil field tools
Any way you are so ingenious
I have idea of million dollars job, that make car aftermarket spare part,
If you like we can corporate together
Your drill isn't right... you messed up on your sharpen.