Interesting to see this in action - I've only seen it on wood previously. Surprised they don't supply a punch or press tool to create the driver grooves before the stock is loaded, to reduce the spindle load. That could create deeper (safer) grooves with less bearing stress.
it is amazing to see that you can pick up the long used and worn part and send it to the manufacturer for refurbishment. Also, much fun to watch the new big machinery
It's surprising how few machinists seem to know about face drivers and indeed how few people have ever noticed the witness marks in the ends of so many common production components. Face drivers were in use for wood turning for hundreds, if not thousands of years before metal turning came about. Simple designs just have fixed drive blades, whilst more sophistcated designs have mechanical or hydraulic means to equalise the pin pressure. Frank Ford has a page on his 'Frets' site on constructing a "drive centre", which is an alternative term for the device.
Just a heads up. The bore needs to be indicated at the muzzle with a range rod before cutting the shoulder and threads. Cutting the threads while turning between centers risks a baffle strike with a can attached.
I've been looking forward to this video ever since I saw your instagram posts about this tool. I follow several machining accounts, but have never seen this tool until you started talking about it. Thanks for sharing. [edit] I can't even guess how handy this would have been for you when you were turning all those shafts back in the day.
I guess a simple steel bar can't be turned into too many cool looking things and that's why he chose that recognizable shape to grab our attention while showing us his new tools.
Really cool tooling Adam! I'm exited for you getting into all kinds of new concepts, tools and techniques. Keep the good content coming. 👌 can't wait to see the progression that your new shop will bring. Haters will always put you down because you have something they don't have. Stay positive and remember that 99.999923791% of us are behind you!
Which part? Adam's shiny new part was a test pattern, designed simply to help him learn. The mystery "auto part" looked like some sort of double spline shaft. I've noticed that sometimes real parts are not identified by request of the maker.
@@stuartschaffner9744 That example part is an fluted AR-15 barrel. You can clearly see the locking lugs and feed ramps on the breech (large end) and 1/2-28 is the common thread for a 5.56 muzzle device, he basically turned shorter blanks.
@@sparkplug1018 , thanks. However, since this is RUclips, perhaps we ought to emphasize the resemblance to a spline shaft. Move along folks, nothing to see here, just some common auto parts.
@@stuartschaffner9744 Absolutely, and the parts he made on camera could definitely be a shaft for something. Just cut the splines on the ends and done.
Agreed was hoping for a traditional video. Not hating on CNC, I've watched many hours on Rotary SMP channel, but that's home shop scale not big budget loan equipment
To the people at Riten, PLEASE use better colors for the color code; a lot of guys are red-green colorblind. How about dark red, lime green, and medium blue instead (i.e. bright, primary colors with lots of contrast.) I can barely make out the difference between the red and green there, even in good lighting conditions.
It's amazing how many companies don't understand that 8% of males won't be able to see these colors. Especially for a product that is primarily male oriented, and designed primarily by males. I had to fight this so many times in my job for LED, silkscreens and other UI design choices. I always got the 'stink eye' when I pointed out I couldn't tell certain indicators because they didn't want to spend the extra time to get the right colors.
@@charlieromeo7663 Color choices that are easy to see for everyone are well established. Web designers have charts specifically for this. For instance, traffic light green is a blueish-green that looks 0% like any red, and the red traffic light is a very saturated red. Basically, the sensitivity to red and green is reduced, so lighter shades of green and red seem similar, verging on gray.
Good to know about Riten repairing their own and other brands, I have a concentric live center that needs cleaned up and a Royal Live center that I could never get a response from Royal about rebuilding.
Royal does not repair or rebuild centers. Riten now makes the Concentric line and has for years. Remember, Concentrics must be lubricated unlike most other live centers.
We used face drivers 30+ years ago to turn rolls for printing presses. Any hardening and/or cylindrical grinding were secondary operations to turning. Some parts were finished in the lathe, others required the secondary operations. The face drivers we used required very little maintenance even in high production machining. I assume that the driver pins are hydraulic operated, the spring loaded center being the master cylinder supplying the pin loading pressure. This also ensures that the drive pins are evenly loaded even if the stock face squareness is not true. Our parts were much larger than Adam's so our drivers had more drive pins. I only had to do very infrequent drive pin and hydraulic circuit maintenance. The face driver was an enormous production efficiency producer, but created a prep step bottle neck. Our solution was to invest in 1960's technology by adding a G&L Endomatic. This is a length, facing and centering machine. This machine used two self centering workpiece vises to hold any size work piece. Two face milling heads mounted with centering drill heads finished the part to length and center drilled the turning centers to proper depth and on location. The Endomatic was the most geometrically complex machine for a maintenance man to set up that I have ever encountered. There is very little on the machine to reference from compared to a lathe or mill and multiple functions must be measured and compensated by finished part error. Adam didn't show us his prep steps, but I assume that he is forced to do those step tediously in his manual lathe(s). Or he will have to break his face driver set up. Indicating a face driver and or lathe chuck is counter productive to machining efficiency gained by the face driver. Prior to switching to face driver technology, we employed SMW air chucks and performed standard 2 step turning operations. SMW chucks were high maintenance compared to hydraulic chucks using a spindle mounted roating cylinder and draw tube to operate the chuck. The magic if the air chuck was an internal air operated pilot check valve that maintained chuck clamping pressure for the entire machining operation. OD mounted air sealing rings transmitted operating and clamping pressure then relaxed to provide free clearance so that the chuck could turn and not destroy the sealing rings. These were high production chucks and eliminated the through spindle diameter clearance loss yielded up to the hydraulic operated draw tube, but they were very high maintenance and tedious to repair and set up properly.
At Riten we make both mechanical and hydraulic face drivers. The one in the video is mechanical. Mechanical face drivers are more accurate than hydraulic, but hydraulic face divers are more forgiving in parts where the stock face is not perfectly square to the axis.
We machined railroad axles downsizing them from a worn out larger size to the next size down. We tried a very expensive face driver and it just did not work out. The face driver had hydraulic driving pins on it and there was no way to set axles up repeatedly length wise in our CNC lathe. It turned out much easier with a good heavy six jaw set-true chuck. That chuck is the cats meow. Floor to floor was just as quick and no worry about having every axle in the same location length wise from axle to axle.
Hi Adam. Thanks for showcasing new tools/methods. I’m just a ‘hobby machinist’, but I really enjoy seeing the variety of machines, tools, Toolholding, and work holding you are using. From ‘old school’ to space age…. all good IMHO. Thanks again, Robert (Australia).
Other than push stop, start, and escape did you actually witness Abom performing any programing of the CNC lathe. Did he perform any programming at all for the camera, on any machine in the shop? Maybe rewatch the video?
@abom79 I have watched every video. Some of them more then once. I admit I am not the biggest fan of the promotion videos. Yet I accept that it is simply a fact of life for your channel now. Would it be too much to ask for a big project from time to time? Remember the welding table? Parking attachment? Etc? I for one love those types of content. It would still allow you to do the promotions but we would get something more from it as well. Anyway, best to you and Abby. 🍻
I've seen similar marks on the end of transmission and other high precision shafts over the years in the automobile industry. Never thought it was how the shaft was driven during manufacture.
Great video, well explained. It is great to see your advances in the CNC technology and also different ways to hold and drive the parts. We all keep learning every day, or sometimes a refresh. I totally see the advantages of working with companies that make and produce products and parts you like; a lot of those items are expensive; and it is a win-win for all. I'm glad they see you as a means to get the word out instead of a flyer that helps nobody. I found the video a good balance between showing the product and your learning curve on the CNC.
Were you just making "demo" parts or is there a customer who wants those shafts for an application? If they're just demos, have you ever thought of selling those (with you logo stamped somewhere) to your viewers? Whether there is a use (alignment pin, clamping jig) or just desk art, it might be cool to have if the price is right.
Lots of demand for AR barrels. MK12 MOD0 barrels will be a snap in that rig! Think about this, the stresses imparted in the surrounding material of the barrel blank by the button forcing its way thru the bore during the rifling process is known to do strange things when you relieve those stresses by turning the outside diameter of a rifle barrel. Accuracy in a barrel has a lot to do with the way the projectile enters the barrel and how it exits the barrel. My concern would be the effect on the muzzle area of that barrel opening up if you are turning button rifled barrels, then cutting even more material away from the barrel right at the critical point of the projectiles exit. Add to that, the half-ton of pressure being applied to the end of the barrel by the tailstock, coupled with the addition of the 1/2-28 threads being cut and you compound the effect of the bore "possibly" opening up. Check on it yourself by pin gauging before and after the machining operation. Probably a moot point on an M4 length barrel (spray and pray) but if you cut barrels for Designated Marksman Rifles (DMR) it becomes a factor.
Great video Adam! I really love your journey into the 'cnc-world" 3 Years ago i have taken the step into cnc machining and i love it! Now programming on a DMG-Mori lathe! Keep it up and keep the vids coming! Huge fan! Grtz from the Netherlands btw 🇳🇱
VERY interesting to me Adam. I am one of those evil people who makes those bad black things....or at least works on them It was fascinating to me how to make those "drive pins with the threaded ends" on your cnc machine....REALLY cool! I also make about 15 passes for the 1/2x28 threads but it takes me awhile longer at 200rpm single pointing it!!! Thanks for the video really cool.
Would have been nice to get some TIR measurements in and out of the lathe. I actaully make drive chucks for our local plywood mill in various diameters and tooth patterns left and right hand. I just started doing the teeth on a cnc mill after many years of doing it manually and I love it. No more angle setups just let the machine do it all. Its amazing how fast and large they peel those logs and the core has a perfect star tooth pattern in the end from the dogs bitting in. Starts with 8" drive chucks and finishes with a 2-1/2" drive spindle running around 1,500 sfm!
Love ya Adam, but this video is intended for a target audience. Not for me. But I really do appreciate you and all the content you’ve shared over the years. I really enjoy a lot of your older videos and I kinda think that much like the industry, your content is changing and adapting to new technology. I sincerely wish you the best. But this type of stuff misses the mark for me personally. My live center is from them. It’s a solid well built center. 👍🏻
I liked the old videos better where Adam explained how he was doing things and showed tips and tricks. even the grill videos were better than this stuff.
Adam. You have digressed from your earlier machining videos. They were informative, instructional and interesting. Lately, seems to be just one (long) product promotion after another.
Makes sense to me, they are still very informative and interesting. Just like you, I subscribed years ago when he did all manual. But going into new equipment to stay up with new technologies, it makes perfect sense what he's doing, specially if he gets a good deal on the technological advancements.
@@andrewterry8092 not sure about that, but the answer is very simple....if his content is not your cup of tea.......well....there you go. Good luck my friend!
I remember how much you enjoyed shooting with NYCCNC and you've got some experience casting. And now this.. is there an AR-15 complete build coming for Patreon supporters 😹
It's exactly the same idea. Except that there is something (I wonder what?) that couples the three drive pins so they engage with equal pressure. With a wood drive dog the material is soft enough for that not to be necessary. I have an old one that uses rubber pads under the drive pins, but this one looks like it might be hydraulic. Though it could just be something like a hemispherical pad, I suppose.
Noooo, they're just your everyday hollow tube. RUclips doesn't like pew pew content, not even mentions of it. They've been demonitizing channels for even holding them. So shhhhh!
@@cojones8518 I have watched dozens of RUclips videos with firearms in them. None of them mentioned being demonetised🤷Seems like y’all are fear mongering to me.
Gutes Video. Viele Grüße aus Deutschland. Wo kann ich die mitlaufende Spitze bestellen? Good video. Many greetings from Germany. Where can I order the live tip?
Good to see you moving forward with some of the newer technology. Not ever being around CNC machines, do you have any indicating in you have to do prior to starting your work? (Yeah, I love to watch you do that on the Monarch) Love your videos!
We're half way through 2023 folks, a *lot* of home shop machining guys have CNC as well as manual and I suspect a good number have only CNC. The industrial tooling he is showing today will be the used tooling we pickup on ebay next year. This content while advertising is also still relevant.
my home shop has tormach cnc mill that I drive manually with the keyboard as much as i use it in cnc mode making parts automatically. My lathe is a manual type 1440 converted to a teaching type cnc lathe. So yeah you are right, thats where things are headed. Abom's shop ads for these products are about one full production step past what I need and can afford but... even if I'd rather see him making stuff I can't deny these tools may be in my future in a few years.
What does that pressure, combined with the machining forces, do to the spindle bearings? If you have to gronk on the tailstock handwheel that much it can’t be good, especially with harder materials.
BTW, love the GoPro shot from the top of the turkey assembly. Another interesting spot would be from under the turret, looking at the cutting action. Dunno if there's room to safely mount a camera under there, though.
Comment made before watching the entirety of it, but did anyone else see the steam wisps from the tail center? I'll look at the prior comments when I finish. MikeC edited for first wisp of steam at 24: or there abouts.
Because of the tight clearance of the bearing within the bearing housing, the live center does run "warm". That is to say you can lay your hand on it immediately after the spindle stops. Our lubrication is stable to temps up to 350 degrees F.
Witness marks from face drivers have been common for as long as I can remember. This is s lightly different system though. Is there a minimum size of lathe it can be used on? I'm guessing it's too expensive for limited hobby use (I can count on the fingers of one foot how often I've needed to make a part in one piece) but could be really handy fo high volume CNC. Guess it depends on cost and availability compared to 'conventional' pressure turning systems, you can only use the patriotic, 'Made In USA' marketing for so long (look what happened to Harley Davidson, 500,000 motorcycles one year, now, Made In India)
My concern would be the threads, you cant test them before taking the part out, and once the alignment to the spindle is off, you crossthread if you have to re-run those fine threads. Youd have to mark your witness marks 1, 2, 3, every part to check your threads and even then you might not get engaged properly. I understand you want to do it in one op... but i dont think i would do that with a threaded part.
With full profile thread insert, made for a specific threads per inch, one can measure the final outside thread diameter. If the diameter is about a 200 of an inch, say 0.1mm smaller than the nominal thread dia, then the thread is ok. In theory, but it always work for me. There are thread depth calculators to use, and lists.
We've been doing this on wood lathes for years
Those shafts look familiar, especially the 1/2x28TPI on the end.
Neat toys! Love learning the tricks the industry uses to make the world go ‘round.
Remindes me of the wood turning days where they used the spades to tighten up the wood same idea love your show keep up the good work
Interesting to see this in action - I've only seen it on wood previously. Surprised they don't supply a punch or press tool to create the driver grooves before the stock is loaded, to reduce the spindle load. That could create deeper (safer) grooves with less bearing stress.
it is amazing to see that you can pick up the long used and worn part and send it to the manufacturer for refurbishment. Also, much fun to watch the new big machinery
was wondering when Adam would get around to making rifle barrels 😄😄🤣
I am no machinist but learned a lot. Thanks as always. Any time you learn something new it's a great day.
It's surprising how few machinists seem to know about face drivers and indeed how few people have ever noticed the witness marks in the ends of so many common production components. Face drivers were in use for wood turning for hundreds, if not thousands of years before metal turning came about. Simple designs just have fixed drive blades, whilst more sophistcated designs have mechanical or hydraulic means to equalise the pin pressure. Frank Ford has a page on his 'Frets' site on constructing a "drive centre", which is an alternative term for the device.
Very professional Demo. May you sell a lot of them.
Greetings from Germany. You do it right to learn CNC.
I’ve seen those marks on parts for years and never why they were there. Great video as always Adam 👍🏻
Just a heads up. The bore needs to be indicated at the muzzle with a range rod before cutting the shoulder and threads. Cutting the threads while turning between centers risks a baffle strike with a can attached.
Thanks Adam .. Best to you and Abby
Those shafts look familiar. I just can’t put my finger on it 🌴👍👍😎🌴
i think you ARe right on target with your assessment.
I've been looking forward to this video ever since I saw your instagram posts about this tool. I follow several machining accounts, but have never seen this tool until you started talking about it. Thanks for sharing. [edit] I can't even guess how handy this would have been for you when you were turning all those shafts back in the day.
These have been around for more than 30 years. Great gear.
I guess a simple steel bar can't be turned into too many cool looking things and that's why he chose that recognizable shape to grab our attention while showing us his new tools.
..example to use...hmmm...a fluted gun barrel with threaded end!
"Shafts" with a 1/2-28 thread. 😉 Let us know if you ever start manufacturing those shafts with a 0.223" bore.
0.224” is the spec I’m pretty sure. Agreed, I want one too!
I’m wondering if he has a gun drill hiding in the background.
1/2x28 threads, with that profile, I know what that “shaft” is for 😉. Is next week going to be how to bore a .224” hole down the center of it? 🙏🏻
No, it get's a 5-start, modified acme, .224-1/7 internal thread.
Thanks for your efforts, I tried to hang with you on this, CNC is just not my thing.
Nice AR “shaft” 😎
Really cool tooling Adam! I'm exited for you getting into all kinds of new concepts, tools and techniques. Keep the good content coming. 👌 can't wait to see the progression that your new shop will bring. Haters will always put you down because you have something they don't have. Stay positive and remember that 99.999923791% of us are behind you!
So it’s wood lathe. Makes sense to me. You’re turning into quite the salesmen Adam!
AR 15 barrel blanks
It's always nice to see Erie's Reed Manufacturing products still in use.
I agree. I grew up in Erie.
It’s interesting how Adam doesn’t want to say what that part actually is. Because it’s not exactly a shaft.
Which part? Adam's shiny new part was a test pattern, designed simply to help him learn. The mystery "auto part" looked like some sort of double spline shaft. I've noticed that sometimes real parts are not identified by request of the maker.
@@stuartschaffner9744 That example part is an fluted AR-15 barrel. You can clearly see the locking lugs and feed ramps on the breech (large end) and 1/2-28 is the common thread for a 5.56 muzzle device, he basically turned shorter blanks.
@@sparkplug1018 , thanks. However, since this is RUclips, perhaps we ought to emphasize the resemblance to a spline shaft. Move along folks, nothing to see here, just some common auto parts.
@@stuartschaffner9744 Absolutely, and the parts he made on camera could definitely be a shaft for something. Just cut the splines on the ends and done.
It's because the Wicked Witch of the Web (and her minions) that owns YT demonetizes any video that references things that go "pew pew"... 🤬
Abom´s Armory... :D
Thanks for the show Adam
Please bring back you old school machining .
I second that.
Agreed was hoping for a traditional video. Not hating on CNC, I've watched many hours on Rotary SMP channel, but that's home shop scale not big budget loan equipment
He makes videos of what he is doing
@@Paul-FrancisB Yep the relatable factor drops once Skynet gets involved
Who cares? CEE is 10x better than this channel ever was. Or will be.
To the people at Riten, PLEASE use better colors for the color code; a lot of guys are red-green colorblind. How about dark red, lime green, and medium blue instead (i.e. bright, primary colors with lots of contrast.) I can barely make out the difference between the red and green there, even in good lighting conditions.
It's amazing how many companies don't understand that 8% of males won't be able to see these colors. Especially for a product that is primarily male oriented, and designed primarily by males. I had to fight this so many times in my job for LED, silkscreens and other UI design choices. I always got the 'stink eye' when I pointed out I couldn't tell certain indicators because they didn't want to spend the extra time to get the right colors.
How about if they printed “G” “Y”, and “R” on the color band? But I get your question.
@@charlieromeo7663 Color choices that are easy to see for everyone are well established. Web designers have charts specifically for this. For instance, traffic light green is a blueish-green that looks 0% like any red, and the red traffic light is a very saturated red. Basically, the sensitivity to red and green is reduced, so lighter shades of green and red seem similar, verging on gray.
Good to know about Riten repairing their own and other brands, I have a concentric live center that needs cleaned up and a Royal Live center that I could never get a response from Royal about rebuilding.
Royal does not repair or rebuild centers. Riten now makes the Concentric line and has for years. Remember, Concentrics must be lubricated unlike most other live centers.
We used face drivers 30+ years ago to turn rolls for printing presses. Any hardening and/or cylindrical grinding were secondary operations to turning. Some parts were finished in the lathe, others required the secondary operations.
The face drivers we used required very little maintenance even in high production machining. I assume that the driver pins are hydraulic operated, the spring loaded center being the master cylinder supplying the pin loading pressure. This also ensures that the drive pins are evenly loaded even if the stock face squareness is not true. Our parts were much larger than Adam's so our drivers had more drive pins. I only had to do very infrequent drive pin and hydraulic circuit maintenance.
The face driver was an enormous production efficiency producer, but created a prep step bottle neck. Our solution was to invest in 1960's technology by adding a G&L Endomatic. This is a length, facing and centering machine. This machine used two self centering workpiece vises to hold any size work piece. Two face milling heads mounted with centering drill heads finished the part to length and center drilled the turning centers to proper depth and on location. The Endomatic was the most geometrically complex machine for a maintenance man to set up that I have ever encountered. There is very little on the machine to reference from compared to a lathe or mill and multiple functions must be measured and compensated by finished part error.
Adam didn't show us his prep steps, but I assume that he is forced to do those step tediously in his manual lathe(s). Or he will have to break his face driver set up. Indicating a face driver and or lathe chuck is counter productive to machining efficiency gained by the face driver.
Prior to switching to face driver technology, we employed SMW air chucks and performed standard 2 step turning operations. SMW chucks were high maintenance compared to hydraulic chucks using a spindle mounted roating cylinder and draw tube to operate the chuck. The magic if the air chuck was an internal air operated pilot check valve that maintained chuck clamping pressure for the entire machining operation. OD mounted air sealing rings transmitted operating and clamping pressure then relaxed to provide free clearance so that the chuck could turn and not destroy the sealing rings. These were high production chucks and eliminated the through spindle diameter clearance loss yielded up to the hydraulic operated draw tube, but they were very high maintenance and tedious to repair and set up properly.
At Riten we make both mechanical and hydraulic face drivers. The one in the video is mechanical. Mechanical face drivers are more accurate than hydraulic, but hydraulic face divers are more forgiving in parts where the stock face is not perfectly square to the axis.
Love manual machines!! Long live the monarch!
It would be neat to see the equipment needed to make the internal features of those shafts.
He has the equipment. Just a matter of tooling.
We machined railroad axles downsizing them from a worn out larger size to the next size down. We tried a very expensive face driver and it just did not work out. The face driver had hydraulic driving pins on it and there was no way to set axles up repeatedly length wise in our CNC lathe. It turned out much easier with a good heavy six jaw set-true chuck. That chuck is the cats meow. Floor to floor was just as quick and no worry about having every axle in the same location length wise from axle to axle.
Great episode Adam... always very interesting... thanks for sharing ;)
Hi Adam.
Thanks for showcasing new tools/methods. I’m just a ‘hobby machinist’, but I really enjoy seeing the variety of machines, tools, Toolholding, and work holding you are using.
From ‘old school’ to space age…. all good IMHO.
Thanks again,
Robert
(Australia).
Thanks Adam , you are getting to grips with the software on The Milltronics lathe 👌👏👏👏👏👍🍺
Other than push stop, start, and escape did you actually witness Abom performing any programing of the CNC lathe. Did he perform any programming at all for the camera, on any machine in the shop? Maybe rewatch the video?
The perfect video to relax and watch on a big TV, thanks Abom for another awesome soothing video to watch!
Very interesting... nice to be able to compare against older technology and techniques
@abom79 I have watched every video. Some of them more then once. I admit I am not the biggest fan of the promotion videos. Yet I accept that it is simply a fact of life for your channel now. Would it be too much to ask for a big project from time to time? Remember the welding table? Parking attachment? Etc? I for one love those types of content. It would still allow you to do the promotions but we would get something more from it as well. Anyway, best to you and Abby. 🍻
Abom79 your English is grat and clear, congrats 👏
I've seen similar marks on the end of transmission and other high precision shafts over the years in the automobile industry. Never thought it was how the shaft was driven during manufacture.
Great video, well explained. It is great to see your advances in the CNC technology and also different ways to hold and drive the parts. We all keep learning every day, or sometimes a refresh.
I totally see the advantages of working with companies that make and produce products and parts you like; a lot of those items are expensive; and it is a win-win for all. I'm glad they see you as a means to get the word out instead of a flyer that helps nobody. I found the video a good balance between showing the product and your learning curve on the CNC.
Awesome tool and a wonderful video.
Loved the face driving tool design!
Very well explained
My primary concern would be with the bearing life on both the spindle and tailstock, especially when turning harder materials.
The longest Adam ad ever.
Sorry Adam I can't do these ones. For me it's like watching paint dry
a giant wood lathe! great new design!
Were you just making "demo" parts or is there a customer who wants those shafts for an application? If they're just demos, have you ever thought of selling those (with you logo stamped somewhere) to your viewers? Whether there is a use (alignment pin, clamping jig) or just desk art, it might be cool to have if the price is right.
Good idea!
Lots of demand for AR barrels. MK12 MOD0 barrels will be a snap in that rig! Think about this, the stresses imparted in the surrounding material of the barrel blank by the button forcing its way thru the bore during the rifling process is known to do strange things when you relieve those stresses by turning the outside diameter of a rifle barrel. Accuracy in a barrel has a lot to do with the way the projectile enters the barrel and how it exits the barrel. My concern would be the effect on the muzzle area of that barrel opening up if you are turning button rifled barrels, then cutting even more material away from the barrel right at the critical point of the projectiles exit. Add to that, the half-ton of pressure being applied to the end of the barrel by the tailstock, coupled with the addition of the 1/2-28 threads being cut and you compound the effect of the bore "possibly" opening up. Check on it yourself by pin gauging before and after the machining operation. Probably a moot point on an M4 length barrel (spray and pray) but if you cut barrels for Designated Marksman Rifles (DMR) it becomes a factor.
Great video Adam! I really love your journey into the 'cnc-world"
3 Years ago i have taken the step into cnc machining and i love it! Now programming on a DMG-Mori lathe!
Keep it up and keep the vids coming! Huge fan!
Grtz from the Netherlands btw 🇳🇱
VERY interesting to me Adam. I am one of those evil people who makes those bad black things....or at least works on them It was fascinating to me how to make those "drive pins with the threaded ends" on your cnc machine....REALLY cool! I also make about 15 passes for the 1/2x28 threads but it takes me awhile longer at 200rpm single pointing it!!! Thanks for the video really cool.
Hi Adam, you may want to get a polarizing filter for your camera to remove the glare and reflection Always enjoy your videos
That tool for measuring the pounds of force reminds me of a Sherline trailer tongue weight scale.
Would have been nice to get some TIR measurements in and out of the lathe. I actaully make drive chucks for our local plywood mill in various diameters and tooth patterns left and right hand. I just started doing the teeth on a cnc mill after many years of doing it manually and I love it. No more angle setups just let the machine do it all. Its amazing how fast and large they peel those logs and the core has a perfect star tooth pattern in the end from the dogs bitting in. Starts with 8" drive chucks and finishes with a 2-1/2" drive spindle running around 1,500 sfm!
nice, those drive centres are arround since the 60s at least :)
Love ya Adam, but this video is intended for a target audience. Not for me. But I really do appreciate you and all the content you’ve shared over the years. I really enjoy a lot of your older videos and I kinda think that much like the industry, your content is changing and adapting to new technology. I sincerely wish you the best. But this type of stuff misses the mark for me personally.
My live center is from them. It’s a solid well built center. 👍🏻
the part you showed with the flutes looks very familiar. not surprised you didn’t say what it was. youtube bs!
It's just smart business. The vast majority of well adjusted humans would choose not to watch a video titled 'machining gun barrels'.
That’s awesome thanks for sharing
I liked the old videos better where Adam explained how he was doing things and showed tips and tricks. even the grill videos were better than this stuff.
Explaining would require understanding! Remember, this is "ABOM79 PRESENTS"!
Agreed once the CNC side came all changed, I started machining due to watching aboms video and tutorial side
I wonder what a precision level on the ways next to the tailstock would show us.
@@SteveColluns-hm2xx flexing under the load applied from the tailstock
Adam. You have digressed from your earlier machining videos. They were informative, instructional and interesting. Lately, seems to be just one (long) product promotion after another.
Makes sense to me, they are still very informative and interesting. Just like you, I subscribed years ago when he did all manual. But going into new equipment to stay up with new technologies, it makes perfect sense what he's doing, specially if he gets a good deal on the technological advancements.
@@elchuco00 It might make sense to you, but the audience is dwindling, not growing. Not preferable.
@@andrewterry8092 He has more subscribers than ever!! What are you talking about?? Go away if free content and instruction bothers you that much!!
@@paulcopeland9035 Haha, you're still alive? I thought you were dead.
@@andrewterry8092 not sure about that, but the answer is very simple....if his content is not your cup of tea.......well....there you go. Good luck my friend!
Thanks for the information
That new lathe dog replacement tool looks a lot like what wood lathes use.🤔🤔
now I understand thanks
I remember how much you enjoyed shooting with NYCCNC and you've got some experience casting. And now this.. is there an AR-15 complete build coming for Patreon supporters 😹
I prefer tactile feel. Nothing more sensitive than your hands and body. Through experience, your dialed into pressure.
It almost looks like a wood lathe drive dog.
It's exactly the same idea. Except that there is something (I wonder what?) that couples the three drive pins so they engage with equal pressure. With a wood drive dog the material is soft enough for that not to be necessary.
I have an old one that uses rubber pads under the drive pins, but this one looks like it might be hydraulic. Though it could just be something like a hemispherical pad, I suppose.
Metal lathes also have drive dogs.
"Spur center" I believe is the usual term. Which this pretty much is, with a lot more force holding it in.
Also called steb center.
VAVF - Viewers Against Vertical Format
Are you going to start selling barrels?
Thanks Adam 👍👍👍
Does the pressure applied by the tailstock cause wear or damage to the bearings in the lathe?
Those shafts look like rifle barrels
They are
Shhhhht 🤫🤫🤫 RUclips super dumb about stuff like that, don’t get Adam a strike or this video demonetized
Noooo, they're just your everyday hollow tube. RUclips doesn't like pew pew content, not even mentions of it. They've been demonitizing channels for even holding them. So shhhhh!
A test run for O.D. work. A real "shaft" would already have the I.D. cut before O.D. cutting.
@@cojones8518
I have watched dozens of RUclips videos with firearms in them. None of them mentioned being demonetised🤷Seems like y’all are fear mongering to me.
This system has been around a long time. Usually found in grinding.
Nice ar barrel... 😄🇺🇸
Very informative video,Adam.Thank you.
You can eliminate some reflection in your videos using a polarized filter.
Great class!
Gutes Video. Viele Grüße aus Deutschland. Wo kann ich die mitlaufende Spitze bestellen?
Good video. Many greetings from Germany. Where can I order the live tip?
That looked like an AR barrel, minus the bore...
Good to see you moving forward with some of the newer technology. Not ever being around CNC machines, do you have any indicating in you have to do prior to starting your work? (Yeah, I love to watch you do that on the Monarch) Love your videos!
We're half way through 2023 folks, a *lot* of home shop machining guys have CNC as well as manual and I suspect a good number have only CNC. The industrial tooling he is showing today will be the used tooling we pickup on ebay next year. This content while advertising is also still relevant.
my home shop has tormach cnc mill that I drive manually with the keyboard as much as i use it in cnc mode making parts automatically. My lathe is a manual type 1440 converted to a teaching type cnc lathe. So yeah you are right, thats where things are headed. Abom's shop ads for these products are about one full production step past what I need and can afford but... even if I'd rather see him making stuff I can't deny these tools may be in my future in a few years.
Face drivers are not _that_ new, we used them to make tensile-testing specimens back on the mid 1990s.
He said multiple times that they were only 'new to him' and knows they've existed in the industry for a while.
Did you watch the entire video? He mentioned the technology was nothing new almost as many times as he mentioned the MFR.
His videos are so boring anymore , just promoting products. Guess that's why CEE has way more views
Kurtis is an actual machinist, not a wannabe influencer!
What does that pressure, combined with the machining forces, do to the spindle bearings? If you have to gronk on the tailstock handwheel that much it can’t be good, especially with harder materials.
BTW, love the GoPro shot from the top of the turkey assembly. Another interesting spot would be from under the turret, looking at the cutting action. Dunno if there's room to safely mount a camera under there, though.
Comment made before watching the entirety of it, but did anyone else see the steam wisps from the tail center? I'll look at the prior comments when I finish. MikeC edited for first wisp of steam at 24: or there abouts.
Because of the tight clearance of the bearing within the bearing housing, the live center does run "warm". That is to say you can lay your hand on it immediately after the spindle stops. Our lubrication is stable to temps up to 350 degrees F.
@@KentHizer wonderful to know. Thanks
That force gauge is easy to make if you can machine a precise 1 square-inch bore.
Witness marks from face drivers have been common for as long as I can remember.
This is s lightly different system though.
Is there a minimum size of lathe it can be used on?
I'm guessing it's too expensive for limited hobby use (I can count on the fingers of one foot how often I've needed to make a part in one piece) but could be really handy fo high volume CNC.
Guess it depends on cost and availability compared to 'conventional' pressure turning systems, you can only use the patriotic, 'Made In USA' marketing for so long (look what happened to Harley Davidson, 500,000 motorcycles one year, now, Made In India)
Adam, I'm so glad that the CNC lathe is working out for you. It's quite a new world, this CNC, huh?
Good stuff
5:29 May The Force be with your... accessories.
How do you bore it and rifle it?
My concern would be the threads, you cant test them before taking the part out, and once the alignment to the spindle is off, you crossthread if you have to re-run those fine threads. Youd have to mark your witness marks 1, 2, 3, every part to check your threads and even then you might not get engaged properly. I understand you want to do it in one op... but i dont think i would do that with a threaded part.
thread mics are a thing and the 3 wire method is also a thing .
With full profile thread insert, made for a specific threads per inch, one can measure the final outside thread diameter. If the diameter is about a 200 of an inch, say 0.1mm smaller than the nominal thread dia, then the thread is ok.
In theory, but it always work for me. There are thread depth calculators to use, and lists.
I think they been using it for wood working.
1/2 28 thread huh....exiting!
Where do you set your Z-zero and does it have to be reset after the pins dig deeper into the material after the first cut?