Tool Shank For the Star Grinder

[@warrenjones744]

Way Cool Peter. The tool room grinder is not dead like they want us to believe.

[@philbert006]

Your attention to detail and patience to analyze and correct obstacles is something i envy. It's just not in me. It requires more effort than i can justify usually. But it's satisfying to watch, and your ability to explain and teach seemingly effortlessly is a gift. I'm no machinist, and I'm too disabled to really pursue a career like this now. But i love working with metal and it's wonderful to do it now vicariously through your videos. Thanks for taking the time and effort to do it.

[@JohnSmith-dp2jd]

Oh neat. We use custom ground top-notch inserts like those for certain threads where I work, and have ran into issues with that 3 degree angle. Had to scrap a few dozen inserts because someone in the toolroom just clamped them in some way that held them square instead of using a holder or something like this. Love your videos, they're very chill and show types of work and details of the process that very few other people on social media cover. Then again, I don't think there are many people that have an integrex or any other sort of mill turn.

[@JaapGrootveld]

It,s amazing to me how you operate these machines.

[@chrisneale7453]

Great video as always thank you for taking the time to make them

[@billdlv]

Nice job Peter 👏

[@dmacdonell]

Thanks Peter, I really enjoy the grinding work.

[@larryblount3358]

Always great content. I am always learning something from you.

[@TrPrecisionMachining]

very good job peter

[@ronaldrolka-py5yy]

Thanks for sharing

[@RRINTHESHOP]

Nice job Peter.

[@EdgePrecision]

Thanks Randy!

[@tdg911]

You always have awesome content. Love your videos.

[@TKYKZ]

they are documents lol.

[@MASI_forging]

Great video as always.

[@bcbloc02]

The integrex seems like overkill for making that holder but people say the same when I use the HBM for small parts. Work with the tools at hand 🙂

[@EdgePrecision]

Yes but it’s the machine I have.

[@anthonyrivers8395]

You have a really big machine. A goliath.❤

[@HondaBoy]

Much easier to make small parts on a big machine than the other way around

[@JosephColihan]

Fix the chuck jaws. But as usual another perfect part

[@gilbertotejeda4167]

Finish on the ground insert looks better than micro 100 finishes 😂

[@EdgePrecision]

This all has to do with feed rate when grinding. I have made tool that hold up better than large manufactures tools. I was making some ball mills for a customer that held up better than the Guhring ball mills they were using. They even sent on of mine to them for them to duplicate. But you know the only difference (in my opinion) is in order to manufacture their tools for the lowest price. They feed the grinding to fast to reduce cycle time. I always feed the primary cutting edges slower. That takes more time but it makes a better tool.

[@gilbertotejeda4167]

@@EdgePrecision exactly if the finish on the tool is pristine it will not Fail like others!

[@TheWidgetWorks]

Nice! Question ,why not just turn down and cut off an off the shelf bar instead?

[@EdgePrecision]

That Could be possible. The only bar I could find was 1.500 in diameter and kind of expensive. I already had some of these blank shanks that I turned for this purpose, for the grinder. With .750 shanks. So really I didn't have to buy anything except the clamp. Also I thought it would make some good KZbin content.

[@TheWidgetWorks]

@@EdgePrecision That makes sense, I kind of figured being a off hand bar it would have been pretty pricey or not stock. Glade you made the video then!

[@jimsvideos7201]

ER32 heat shrink holder? In that it has the heat-shrink pocket on the end and is otherwise shaped like an ER32 collet? If I have that right that's the first time I've heard of it. Thank you for sharing the adventure, as always.

[@EdgePrecision]

They make the in different lengths. The end the mounts in the tool holder has a ER end and the other has a srink connection. The one in this video is a .125 shank and projects about 1.5 inches out of the ER collet chuck. Do a search “Iscar ER srink in” you will see them.

[@Warlearder]

Awesome. Love that simultaneous multi axis milling. How flat can it actually make the surface versus standard profile milling like you'd do in a mill?

[@EdgePrecision]

I'm not exactly sure what you are referring to? This grinder is not a surface grinder. It is designed to grind tools on. Like endmills. Its not really meant to do what I'm doing here. But I can make it do this.

[@dumpsterdave3710]

@@EdgePrecision I believe @Kainafar is referring to the simultaneous milling that you did (the "adaptive" path) where it was mostly the C-axis rotating left and right. I would expect it to be pretty flat but I'm also curious if you've ever attempted to quantify it.

[@EdgePrecision]

@@dumpsterdave3710 Not really because it’s usually used for roughing. I don’t see why it would be flatter then any other milling cycle.

[@RSPFactory]

@dumpsterdave3710 A C axis lathe without Y relies on that style milling for everything. We just got one and I've done some curved surfaces but nothing flat to run an indicator across. It's a compromise and I expect it to be less flat than a "true" axis, which is probably why Peter only uses it for roughing.

[@LucasOLIVEIRA-cj2gt]

amazing!

[@jeffreylewis145]

We use CNC machine shops. And discuss you at their shops. You are famous.

[@EdgePrecision]

Thanks Jeffrey!

[@spikeypineapple552]

Hi Peter, how did you account for thread helix on this? I run a load of really corse acme threads, and whenever I use an insert it always rubs, I have to grind my own tools. Any little nuggets of knowledge to share?

[@EdgePrecision]

All I know is they gave me a sample insert they have been using. All I did is duplicate that. If it doesn’t work it’s on them.

[@spikeypineapple552]

@EdgePrecision thankyou for making these, once again!

[@JohnBlaze505]

Where did you get that tap extension?? Or did you make that yourself?

[@EdgePrecision]

The tap extension I used in this video is a Ritmar brand. If you do a search for that name you will see them. Here in Houston,Texas I buy most all my tooling from Bass Tool. I have shown also how I make one in my video titled "Copper Part-1 Setup". The Ritmar one works kind of like a collet. On my shop made one I hold the Tap in it with locTite. So to change the tap I have to heat it to break the LocTite bond.

[@DudleyToolwright]

I love your work , Jodi. How much time do you spend in cad on these one off projects or do you enter the code manually?

[@jimsvideos7201]

Peter 🙂 I'd hazard a guess you're thinking of WT&T?

[@EdgePrecision]

I never enter code manually.

[@nomen_omen]

I'm curious how to cope with thermal expansion making such precise tools?

[@EdgePrecision]

The coolant system on this machine is quite large. But things do get warm. So constant adjustments to offsets are necessary to hold close tolerances while grinding tools.

[@merouanebenderradji1582]

hey peter it would be nice if you could show how you did the programming and set the work offsets on your grinder machine, first I thought that maybe you wrote your own G-CODE but I read on one of the comments that you never input your G-CODE manually, and thanks for the videos very informative.

[@EdgePrecision]

On this grinder, it has a conversational type format on the control for its grinding cycles. Foor this tool I would specify a profile in 2D and it figures out the rest. Because it is a five axis machine with complicated movements I really never do any manual programming. Except maybe a very simple MDI move. Because I don't have a proper tip for the tool probe, to probe left hand tools. On this setup I did have to establish the rotational zero (A axis) for my insert's shank. I was able to indicate it and set a fixture offset. This then required me to do a MDI to bring the A axis to its zero for a verification of that zero point. But all the programming is done in the control because it is to complicated, if not impossible to program this manually. With the clearance angles of the tool. I know there is probably a way to calculate these paths (Because the control does it). But that's way beyond my mathematical ability.

[@philbert006]

​@@EdgePrecisionit would almost certainly be way too time consuming if you did have the maths and render the whole affair unfortunate and useless for anything other than personal satisfaction.

[@merouanebenderradji1582]

@@EdgePrecision I saw you programming the spacial shape endmill in one of your videos I just didn't know that you could do this type of geometry on inserts conversationally that's why it would be interesting to see the programming on the control even though they made very small quantities of that machine and we probably won't work on that control anyway I hope it is not asking too much.

[@EdgePrecision]

Yes it can be done. The software is called Num Roto. That kind of gives the impression it's for rotating tool grinding. Like Milling Tools if you will. But it can be made to do this. What I'm basically doing is defining what they call a form tool but with a single flute and no helix. So if I define the profile in the correct location of the insert in my tool holder the machine will grind it in that location with the relief angles and everything. What is important is getting that profile in the correct location. So in these cases I model the tool holder and insert in the Cad software with the unground insert. Then save a .stl file of that for the simulation on the grinder. That way when I make the program and simulate it on the control. It shows everything in the correct place. Pretty much if you get the simulation correct thee grinding will be correct. With very little changes.

[@merouanebenderradji1582]

@@EdgePrecision I knew there is some getting around to do this thank you peter for your answer I got it now you don't have to do a video for this and it is awesome that you are replying to complete strangers and taking your time to compose such detailed answers I don't know how to thank you if you need anything considering FEM simulations, vibration analysis or impeller geometry and design you can come to me as I shine in those departements since I studied aeronautics, I know a fair bit of machining too but hey I'm here learning from you, thanks again for everything

[@РОМАНБУХОВЕЦ-х3м]

Lathe Chuck looks like KITAGAWA isnt it?

[@EdgePrecision]

The manual chucks I'm using on the Mazak are Bison brand.

[@richhuntsd12]

Nice grinding fixture. Now You have that “Peace of Mind” knowing you can make all kinds of special no. 4 inserts if You need them. Just curious what material You choose for the part? Awesome video, thanks for sharing

[@EdgePrecision]

Yes if I need a external left hand or a internal right hand #4 insert I'm good Thanks! As to the material? I made the blanks many years ago so I can't be sure. But I usually buy O-1 Drill rod for this purpose. So I would assume that's what I used.

[@danielmachado6750]

Daniel Machado - Brazil

[@raybrown5890]

perfect

[@TylerBrigham]

How many tools does your integrex magazine have?

[@EdgePrecision]

It holds 80 tools.

[@philbert006]

Enough to make anyone feel inadequate 😂

[@petruciucur]

Masterpiece

[@leonfernandovalente6775]

EXCELENTE TRABAJO, COMO PUEDO CONSEGUIR ESOS DIBUJOS O MODELOS DE LAS PIEZAS DE AJEDREZ.

[@EdgePrecision]

¡Gracias! Para los modelos de ajedrez. Envíame un correo electrónico a "[e-mail]". Ingrese la descripción Modelos de ajedrez y le enviaré por correo electrónico algunos modelos .step. ¡Gracias otra véz!

[@РоманКачалов-я2щ]

Крутяк! А мы в России на глаз вручную точим на глазок! Станочки у вас для меня мечта! Куда можно скинуть как работаю?

[@dennyskerb4992]

👍👍