Thanks Peter. I like the way you did the video switching from actual drilling to the simulation during the coolant spray. Nice touch! Runout is phenomenal. Take care and have a good Christmas.
Hi Peter! From my small shop in Sweden I am as always mazed off the complexity off your work . I do grinding and toolmaking butt aim still amazed! Most off my work is out in 48h. and the bulk of my time is emergency fitting and welding on stuff that is never down. I do love your videos! They are like presents fore my sole.
Im glued to watching these videos of your latest job. The toolmaking side and your approach to the job is very educating. Even better than the super duplex job which was very interesting. Merry Christmas and thanks for posting .
I always like when a top-end machining video starts with roughing and ends with lapping! Nice piece of work, Peter, I enjoy watching your videos. Cheers!
This was a top quality video showcasing the problem, potential solutions, and your approach to your solution. Amazing turnout results and an excellent outcome
As a guy who used to do a ton of job shop work, and custom tools for nearly half the jobs, this makes me giddy. Love this stuff Peter, awesome content, and even better machining. Cheers and keep up the great work
wow, that turned out excellent! Im sure if you had mentioned in a previous video that you had planned on doing this all you would have heard was reasons why it wouldnt work or why you couldnt do it. Excellent work as always Peter, thanks for putting out such great content. Cheers
When we have to heat up shrink holders with a torch at our shop, we spin it slowly in the manual lathe in order to heat the holder evenly. Works pretty well.
Really cool thank you! Finish bore in the milling spindle was a big a-ha moment for me. Now that I see it I think I understand - shrink fit holders have the best runout because they are made of a single symmetrical part where other holder styles have many parts to them
Always a pleasure watch a high precision engineer at work I'm looking forward to seeing the next video, and that tool working. Thank you for sharing your skill and knowledge 🇬🇧
In general, bigger machine = more mass = more stable/rigid = more accuracy. Obviously the servos & feedback loops have to be built to take advantage of that, but getting accurate parts out of a big machine is easier than from a small one!
Although this vid is a year old, I have used a styrofoam cup, can of compressed air turned upside down to dump liquid into cup, place tool into cup to get super cold, heat tool, drops right in. shrink one, expand the other. Can of compressed air works well too for when the reaming ferry shows up and makes holes just a hair undersized. Dump the cold stuff on your part till really cold, cycle start. Hole is now bigger
As always fine machining and an informative video. I just got some of the iscar er32 shrink fit extensions, game changer for me , i could never get close to the collet nose and run smaller tools, now i can get small features in without having to increase my stickout to where other operations suffer. btw on smaller stuff like that my shrinker will get the holder cherry red so you might not have been too tight just not hot enough, but the lapping was a nice touch.
Very nice Peter, first thought was the heat running up the tiny shank to change the hardness!! looks like you had it under control...merry xmas from the UK
Yes If there is any heat treat in the material this will soften it. But only in the heated area. This turns out not to be a problem with shrink holders.
Genius! I hope you don't mind but I am going to show this video to our manager and possibly use your idea with a job we have troubles with all the time.
This is youtube at its best. Watched almost all of your videos. Found your Chanel Trough the garage tour video. Learned so much from you, thank your very much for sharing your knowledge. Great progression also with the editing and video quality. I started out doing some youtube videos a While ago, and even my crappy videos took some effort. Yours do hold a very high quality regards both content, editing and video quality so I can realy feel that you did put in alot of effort. In some videos you ask for what we viewers would like to see. I would like to see a video about steels and aloys that is Good for machining. I know it all depends on what the part will be for. But some kind of an overview of the most common stocks used in machining would be super nice. It is a djungle for me getting Into hobby machining. Have not found even one Good youtube video that presents a Good overview of this topic yet. Br thechipwelder
I think your holders runout is better than a factory made , i'd be tempted to check against a similar lenght factory made . Amazing Work as always Peter .
Hey buddy just checking on you making sure everything's okay. Not looking for no new post just making sure you're all right. Hope to see you soon and I hope you're having an awesome new year
Thanks Don! I’m fine just been busy learning the new Esprit TNG software interface. In combination with this setup using all those special tools in the previous videos. New video coming soon explaining this and the new operation showing how these tools are used.
Well done Grasshopper. Guesstimating the proper temperature would be a good application for a Tempil crayon. Watching that machine turn and face a bar, is a great way to explain and demonstrate the difference between “speed” and rpm. When you can hear and see one remain the same while the other ramps up or down, it would help a lot. I had problems getting some people to understand the financial benefits of css over constant rpm setting.
Nice work. FYI: Haimer sells those straight-shank heatshrink extension, too. They're usually not too bad on lead-time, either, though they are pricey. 78.5/8Z0.1/4Z.1 seems like what you'd want, though without modeling the profile it's hard to know. Just another option.
I've thought about that too, machinist and designers even from 40 years ago would be amazed by the machines and capabilities we have today. Heck they probably didn't have spindles that went over 5 or 10k
Runout of less than 1/100mm is really good, considering the distance to the spindle bore. Bearings and spindle taper have to be perfect for 0 runout as well, a lot better than on my old ISO40 machines ;-)
Very nice work Peter! May I suggest lapping in the machine with the lap and the tool holder both rotating. That gives a better chance at not lapping the hole at an angle. ATB, Robin
ROBRENZ thanks Robin. I will keep that in mind next time. All these holders are already being used in a setup right now. But I can see how that would improve the runout error. I would just have to figure out how to run both spindles at the same time. On this machine it’s kind of interlocked. You can mill or you can turn but it doesn’t like to rotate both spindles at the same time. This machine does have the hobbing option witch does allow both spindles to rotate in a sinked fashion. I have never used this function but possibly that could be utilized to make it work. It’s just you can’t rotate the turning spindle without having a tool orientated and clamped in the milling spindle. I know this sounds strange but that’s the way they made this machine.
@@EdgePrecision The most important part is that the toolholder you are lapping is turning. This insures you are not influencing the axis of the hole. If the lap is stationary that is ok and necking the lap to a 1*dia. engaged length will help to minimize any effects of misalignment of the lap to the part. If the lathe spindle is not locked you could just turn it by hand while the mill spindle is turning the toolholder. The whole point here is averaging all the alignment errors by having constantly changing orientations of the lap and part.
Yes I can see the logic in that. And if I ever make some more holders (The chance of this is good) I will do as you suggest. If I can figure out how to make the machine do it. The issues with this machine are. You cant run any spindle with the doors open, and you can only run the milling spindle if the C axis is engaged. Or the turning spindle if the milling spindle is clamped with what it thinks is a turning tool. The way I think I could do what you say is make a program that runs the milling spindle and command a movement in the C axis to rotate with the lap in the bore. While stroking the Z axis such that the lap covers the whole bores length. The more I think about this, I think this would be a most Ideal and repeatable way to do it. Much better than just using a hand drill the way I did in this video. With altering the program I could concentrate on certain areas of the bore if necessary to bring them to size. Thanks again Robin you have made me think about the process.
@@EdgePrecision if you hold the lap by just a little bit so it is very flexible you don't have to worry about the lap spinning. Its just technically better but not necessary. Spinning the part to do the lapping is a must.
A quick workaround would be to just lock the cordless drill or something in the chuck, lock the trigger with a cable tie and let it run. Not elegant but quick.
Great job of improvising to meet the need. Loved the Propane torch, lapping and resulting accuracy. Impressed. Was the holder attached to the machine where and how it would have been used to make the part? If so what machine was this?
That Capto holder you had in the chuck looked like something I might could adapt to mount on the spindle of my boring mill. Probably would be no gain though as that spindle assembly is not that stiff a system to begin with.
I am kind of thinking they are not this big/large but I will check into it. Usually the machines that do dental work have smaller spindle sizes. Or are you talking about the end mills themselves? That may have possibilities. Thanks.
Peter, what's the resolution of the indicator? Tenths? Microns? I think you are, probably, the best I've ever seen. Myself a machinist cnc, and manuals. Your craftsmanship is Supreme. God bless you for sharing your brain.
Are you talking about C5 live and turning tooling for a lathe turret? They use that here at Center-line it works great. There isn't really any draw back except maybe the price.
Yes, thats the one Peter. Thanks. Yea I see its not cheap new. Ill probably look at ebay first. The other machine has VDI40 and also KM40. The other one comes with some tooling. DA100, ER32, etc.
Is there a difference between doing OD before ID? Is there a difference in some cases when you don't have much material in the walls between ID and OD? Also wondering what is your hourly pay because if you calculate that into tool costs it might be even more expensive than outright buying it.
Yes you should rough the OD first, it may relieve stress in the material. Particularity in this case because I was turning off quite a bit of material. Because I wanted the run out to a minimum. If I had done the ID work first this could have caused a problem with that.
Well done! I now want to try this for my self made tooling system for my cnc converted mill. Can you give me some Information on the required nominal bore diameters for shrink fit holders?
For smaller diameters say 1/8" to 1/4". Around .0008" undersized. So for 3/16" like these .1869". For larger diameters around .001" under. But you have to try this out for yourself. Make a straight extension to experiment. You don't want to have to heat it red hot to get the tool in. If that's the case your bore is a little to small.
