Custom Tool Trepanning on the CNC Lathe

Another custom tool that we made for a good job that came through the shop recently. It took about 15 hours of machining time to make this 5 3/8" dia Trepan. With this tool we saved a lot of time and some high quality 4140 Alloy steel. Great for a future job. The tool cut about .030" undersize of the final dimension. I am planning of offering the tools that we make for sale online. Getting a website together and getting things in place. I especially love the 2.0" and 2 1/2" dia split holders. The most rigid way of holding boring bars, drills, and even Trepans in exteme situation.
We are swamped. Hiring young machinists who don't mind working for a living. I teach programming for machinists who are motivated.
Send me an email to [e-mail]
Let me see what you got.
Zala Machine in New Jersey

[@valeracnc2752]

You are just a real maniac machinist and at the same time an engineer and inventor of various special machine tools, this is very cool and worthy of respect!

[@captcarlos]

Very good work. Trepanning in the CNC lathe would have my hand over the Big Red Button! Nice tooling and holder. Certainly saves a lot of material and time.

[@thedude5869]

I’ve seen my fair share of stuff online / on youtube and THAT my friend is IMPRESSIVE !!!! Quiet too, was waiting for it to start screaming.

[@zalamachineshop]

Thank you my Dude!!!!

[@douglasrizzo9210]

Excellent idea! Great machining!

[@saurabhchandrayan1616]

Loved that.... Great👍👏 Happy to see huge chunk of material has been saved☺

[@zalamachineshop]

Yea exactly. I get comments that it's a waste of time and yada yada yada. But that's 400 great pieces of material that will eventually prove very useful and save us lots of money.

[@Jenzzzii]

@@zalamachineshop Why should this even be waste of time?

[@zalamachineshop]

It isn't.

[@userwl2850]

Hi buddy. Did you finish bore with the Trepanning Tool too?. Looks like you've got the hang of it now.. 👏🏻👏🏻👏🏻👏🏻

[@tyronesmith7435]

Could you do a video on how you made the tool and what modifications you needed to do to make it all work

[@multivideos7938]

Very very super ultra great tool !!! Very good idea !!! 👏👏👏👏💪

[@Thefreakyfreek]

Nice i made a tiny internal tread milling tool for a swiss lathe on the same lathe it came out completely finished including internal cooling

[@mattiasarvidsson8522]

haha it looked effortless when u put that large chunk of steel in the chuck .. you are strong ;)

[@nikolaiownz]

Nice job

[@maniomaniek4332]

Super pomysł z tym wiertłem trepanacyjnym, ile materiału zaoszczędzone. To się nazywa zaradność;)Pozdrawiam

[@ChrisMaj]

Mam nadzieję że ma jakąś robotę żeby to gdzieś zużyć, bo inaczej to będzie kupa złomu.

[@maniomaniek4332]

@@ChrisMaj Ha ha, lepiej jak już złom, to mieć go w takiej postaci, niż w postaci wiórów. Poza tym to widzę, że tu taki warsztat, że na pewno się przyda😉 ( np. mniejsze wiertła trepanacyjne😋)

[@zalamachineshop]

Manio. Dokladnie co mowisz. Wczesniej czy puzniej material sie bardzo przyda. Jak bym wiercil to by poszlo z wiurami i stracone a z trepanem to znajde odpowiednia robote na ktorej wykorzystamy te kawalki.

[@Vincemaan]

Great Job! I like the fact that you can reuse the core. is there any special geometry on the tool required? i would like to try this out myself.

[@dustinandtarynwolfe5540]

Not sure id call it trepanning, but it turned out nice anyway. I guess in a broad sense. More of a core drill.

[@gilbertotejeda4167]

Ur pretty strong picking up 86 lbs

[@benjaminway5699]

Nice! Is that a 60 degree slant bed?

[@engineeringari9136]

Good

[@jmtx.]

And the slugs are the reward for a job well done?

[@gredangeo]

That's a lot of material not wasted as chips. Good stuff. So do customers come to your shop knowing that they can buy back or get back the remaining material? Or is it just for yourself, because you know you can use that material on other jobs for other customers? Maybe the same customer for a smaller part. I'd imagine a customer would find it interesting to factor in the total cost, because they most likely don't need to send over another hundred stock for the job. it pre-built in the first one. :D

[@Fischer977]

The best

[@mannycalavera121]

Video on making this tool?

[@hoangkim19-90]

👍👍👍

[@martinmaurach300]

Spring ejector, or axial coolant to push out slugs?

[@willyharris4199]

It’d have to be a pretty powerful spring to push that out

[@user-ew2vc4qn3o]

Инструмент конечно шикарный но проще и дешевле взять трубу!!!

[@Grmm]

Jeeese... make sure you turn audio down before 'Zala Machine' is shouted at the beginning - sure woke me up! ;-) Interesting video otherwise (y)

[@zalamachineshop]

Noted

[@shnap4oo]

Isn't there 4140 in weldless tubing available? Great work tho

[@zalamachineshop]

Customer supplied material. 4140 tube is available but not in all sizes and specs. It is cheaper a lot of times to buy solid and drill.

[@parthasarathyp8557]

How to make trepanning tool

[@zalamachineshop]

Next time we make one I will video tape and post. Might be a while but I'll make sure to catch it on video.

[@sandrock8002]

kzbin.info/door/4Z3VGMr-iOQkbfHpgVHZrw

[@spazzywhitebelt]

Second that

[@rajenderbisht07]

What is the maximum possible component diameter and trepanning tool diameter?

[@zalamachineshop]

Max component diameter is 32". kzbin.info/www/bejne/fJmlgKmBnap6b5I

[@bijaaaczxxx]

Isn't hitting the part with a hammer going to damage the bearings?

[@adrianprzybyek5758]

Force is to small for hydraulic chuck

[@modris2980]

How would it even damage the bearings? I can't imagine the scenario. At most the chuck jaws but those would be for soft jaws with low clamping pressure or too big chuck clearance so it doesn't grip too well and even if he hammers till the part drops out in such a scenario it wouldn't even do anything to the bearings?

[@spazzywhitebelt]

Yeah that doesn't seem to be a concern for lathes but you wouldn't want to bang mill spindle like that. Either way don't hammer into the indicator as that'll damage it

[@michaelwooda9444]

What's the part For? What's the purpose of it being from a solid blank instead of hollow stock? Or just better material wise to use the cores for the same project or another?

[@zalamachineshop]

I don't remember finding out what this was for. We got a drawing and an order and we got it done. The slugs we reuse on other jobs. Most of our jobs are small quantity and when in need of a blank we cut a piece off or 2 and get the parts done. The material is high quality 4140 alloy, we work with it everyday.

[@RocketFuelPL]

Nice job like

[@Stasss111]

Hallo! Is the tool hardened? Thanks!

[@zalamachineshop]

Lol it was made out of 4140ht so about 30 rockwell. Stiff though.

[@davesalzer3220]

Wilkes tool.

[@zalamachineshop]

I guess a Trepan is a Trepan is a Trepan. Btw I have great respect for Dave. Trepanning inconel like he does on a regular basic gets me wet.

[@davesalzer3220]

@@zalamachineshop the guy is a beast. That howling would drive me nuts.

[@xoxma2053]

Как такое сверло сделать?

[@zalamachineshop]

В следующий раз, когда мы сделаем его, я сниму на видео и покажу вам.

[@xoxma2053]

@@zalamachineshop ок. Благодарю)

[@JoJo-tq1wr]

Silent tool

[@hoangkim19-90]

👍👍👍