By - Wright-Machining
Does it count if it wasn't done on purpose?
It all counts . Haha what did you do ?
Probably welded a drill bit to a block
I have a couple drills that are one with the part now
"and, at no extra cost, I added HSS reinforcement to your design"
Yea exactly. As long as you don’t think about it to much it’s a great idea
It’s a custom composite material.
I just made my first one of those today! I started tech school for machining in August and today my #47 excalibured in a block of aluminum
Who the hell invented a left hand drill
They can be useful. If you have a broken bolt for example.
yeah I'm just playing. I think everyones accidentally grabbed a left handed tool not realizing it was a left handed tool... run those RPM's up and walla, friction welding.
I always feel the grind on the bit to make sure it's sharp, so I'd probably notice
Yep, my coworker was telling me something very similar, and then he grabbed a left handed pipe tap. I honestly had no idea that was even a thing, he didn’t either. We use floating heads. Guess what tapped on the way “out of the hole”
Same guy that invented left handed drill bits
*Wel-diddly-elcome To The Leftorium!*
I was gonna say I've done it on accident
Um this picture just screams no
I can't imagine the failure mode which would smoosh that hand to paste but like all good engineers I recognize physics is more creative than me. Why does it need to be anywhere near the part for this.
Dude, I'm totally going to steal that line "physics is more creative than me" for future use 😂
I see the makings of a disclaimer for my next design review!
That’s probably a # 2 Morse taper with the tang ground off in the tailstock, lol
Yeah made me cringe a little lol
To hold it in place in case of failure, silly. /s
Op just posted this video.
Most likely method of hand smooshing I guess would be finger trapped in chuck bolt head, hand wrap then rip :O
"Don't hold the tailstock chuck" - Stumpy aka 3Fingers Charlie
Honest-to-god I used to hang out with a guy known as Three-Fingered Pete. He was a printer.
We had to distinguish him from Kansas City Pete.
Wowsers! My guy was a dorm mate who worked a summer in an auto plant and lost his pointer and bird fingers down to the palm. First time I met him he used that part of his hand as a nose rest to freak me out haha. Good times ! (school)
Your not wrong :)
Username should be wrong-machining
80mm Shell Mill stuck on Titanium lmao
Thats a pricey day , Ouch
Yeah boss man was pretty mad but being an Apprentice I guess they expect me to fuck up a tool every once and a while 😂 just hate that it had to be a big one
like i have always said " Learning is expencive , but experiance is pricless :)
Its always the big jobs
Amen to that 😂
They allowed you to use it. They knew the risks. If not it not on you.
That’s true, we work in a shop with around 300 employees and 25% is from 3 different apprenticeship programs offered out of high school so they know they are in for some fuck ups on the road 😂
We have big welders for jet engine parts that rotate the parts together with upwards of 40 tons of force. Once the parts squeal and lock the pressure stays on while it is normalized. Later on it will be final machined.
Yes aero industry has been making good use of this along with stir welding as well
We also do another form of friction welding repair by vibrating 2 parts together very fast mainly used for thin parts. Its pretty crazy.
Just cool stuff , kinda jelous :)
When inconel and titanium are worth more than gold, aviation gets creative on making processes to use less material and repair parts! Just like any other industry it has its good days and bad. “Is that part finished airplanes got to go know, there are paying customers already booked!” 🤣
Not intentionally but yes
Why are you holding it?
Its a live center head . I hold it till it grips amd them i back off a little pressure then it heats and i push it in and let go when it welds
I once worked for a shop that manufactures drill pipe for the water well industry, and all of the tool joints were friction welded to the pipe. It seems to be nothing more than a controlled crash. It's a hot, loud, and ass-puckering process, and I hope I never have to do it again!
Both intentional and accidental. Where I work, we have a massive friction welder we use to weld clevises to cylinder rods for some of our hydraulic cylinders. As for accidents, my best was sending a 16mm boring bar into a solid block of steel on a CNC lathe
How much difference does your hand being there make? Like clamping force, added stirring force? I'd block up my tailstock with an air cylinder of medium duty with a regulator and toggle or solenoid. Very the pressure till some thing started happening.
Its a live center chuck so im holding it back .
Do you mean on purpose?
I once had a soap dispenser that the cheap straw kept falling off so I put it in a drill and ran at full speed until the plastic melted and the straw hasn’t fallen off since
Quote stolen from this sub;
"You can friction weld anything if you lathe it wrong enough"
Get your hand out of there!
Its a good skill for welding small parts togeather but is hard on the machine. I use it to weld an old delta table saw shaft repair togeather. Basicaly the threaded part of the shaft broke off at a drilled hole in the shaft . It was machined down and a stud welded on .
Please don't do that to your lathe. The bearings and tailstock is not meant to apply that much pressure to a part. Also that poor Morse taper in the tailstock is also not meant to be able to handle that type of work
This is very true , i used a live center tail stock though but still possibly a no no with the Lathe
The sound it makes is equally scary.
I've accidentally done it feeding a boring bar 25mm deep when the bar was only sticking out 20. Does that count?
Its all learning :)
I just friction welded a stick tool to a part on a lathe does that count?
You need an absolute shit ton of hp to do it.
I feel like my brain automatically interpreting hp as health points also applies
Yes it does it worked well with 1/2 " and a 3hp motor but would not go above 1 inch for that machine
Oh have definitely welded a few tool holders to steel parts.
Standard lathes make this tricky. You need to be able to stop the rotating spindle essentially instantly. If that doesn't happen, then you get stress lines and possibly fractures from the movement of the weld "puddle" while it cools.
A sound statment
I have done friction stir welding if that counts. Was very R&D heavy and quite spooky
Welder my live centre that wasn’t greased in a while into my very first lathe part
You need to find a way to allow the holder in the tail stock to spin freely when it spools down after the weld if you’re tryna home brew it.
Yes that is what i did . I didnt like the idea of stoping the lathe to join it
I've only got a HiTorque 7x14. I wonder if it could do it, just as a goof.
It its hard on lathes and needs lots of HP. Might work though
Is it actually hard on the lathe? I watched your video and process. You're easily holding it back with your hand while it actually welds. How bad can it be?
I later made one where i tested them and in a 90 deg bend the ones that mushroomed evenly did the best and there was almost a preheat cycle before starting that made it work better.
2 other suprises alumimium welds awsome but brass not at all
Tool wasn’t sticking out of er collet enough. Steel clamp didn’t like that. Lucky I didn’t do the typical press go and walk away, so I was able to Estop it
I had a Udrill come back to the tool crib once that was welded to the bar stock it was drilling and they asked me to remove the drill and rework it so they could use it again...
I've done it on 3d printed PLA before, and it works just fine. Can you actually friction weld metal on a normal small lathe?