Repairing A Badly Worn, Obsolete Part for a Hay Baler - Manual Machine Shop
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- Опубліковано 17 тра 2024
- This job is something that I am seeing more and more of. Customer brings a part and tells me that it is almost $3000.00 to replace, and no used ones exist. Can you fix it?
Absolutely, I can fix it. This job saved my customer a ton of money and a long lead time. He said the part would be about 2 months out from the dealer. He told me the New Holland equipment is being obsoleted in short order and parts are almost nonexistent. He can still source this, but not easily.
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#machineshop #machinistlife #manualmachinist - Навчання та стиль
The method I normally use is to get frozen to the pin, get burned by the casting, jamb up the press, and then knock the whole setup on the floor.
Good finish on yours!!
Lol, fun fun.
HAHAHAHA that sounds like my method too! 😝
Thanks for not skipping over routine metal working. Also, mentioning the type or class metal used for various jobs would help us novices better understand what metal holds up best for particular applications.
It’s always best to heat the whole part in a something like an oven rather than localised heating. When heating with a torch the expanded material close the centre has nowhere to go since the outside of the part is still relatively cool this can sometimes make the bore smaller!. In this case it was the underside that must have had a heat induced taper. I love your videos and never see you make a mistake without explaining your reasons for/against afterwards.
I work for a UK based engineering company with 14 years tool based experience, just passing on some knowledge an old timer kindly/angrily gave to me
Great work, and I'm surprised it only cost a few hundred $$! Great deal for the customer. I love that you repair things at a huge savings, and not to mention the value of the downtime you save your customers! Well done, as always.
It's always good to be able to repair expensive parts and save customers a fortune as opposed to them buying a new part. It also works when the part is no longer available, as it saves an old machine so they don't have to spend an even bigger fortune to replace an expensive machine.
One shrink fit and half a keg of moonshine later we're golden ...very happy lol
Jeez I hated hay bailing when I was young. It would be fun to see the owner's reaction to his machine working quietly for the first time in forever.
I enjoyed it. I agree. I'd love to know before and after sounds.
First time in forever, if ever. Probably the second owner (at least) and the first owner was the one who wore it to hell.
Hi Josh, Twin Sticks renovates old American trucks, I referenced him because of the beer comment you made, Kurtis however is a very good Aussie machinist and well worth a watch.
I had to quit watching Kurtis. Between the theatrics and sloppy workmanship I was seeing, I just can't respect him anymore. I'm happy for his success, but he is not as good as everyone thinks. If you want great Australian machinists, max Grant of the Swan Valley Machine Shop, and Matty's Workshop are both highly skilled and do amazing work. No theatrics, no sloppy work, just real good machinists.
Watching shrink fits gives me the hives. That moment when it suddenly won't budge any further and I fall off my chair. Glad it worked well, Josh. Good repair, as always.
Always scary.
I never saw a machinist run that fast before.
@@scottcates 😁
@@scottcates I have. Lol. When you gotta get to the bathroom, and needed to finish the finishing pass you were in. Saw a guy not make it in time and crapped himself.
As someone who owns an old baler, I liked this one.
Check your grease lines. Common problem on these.
Yesterday was a major stressful day here at the shop (auto shop) so it was relaxing watching this today, Thanxx
Glad you enjoyed it!
nice unintentional wave effect with combined rolling shutter and vibration.
I've never had one do that before. Actually aggravating when I saw it.
What technically caused that? Was it the frequency of the vibration with the slitting saw?
You earned that "shot" for sure! Awesome work!
A good neighbor to your customers!
That must have been scary when the pin got stuck. Great work rushing to the press to get it home.
Well, from this video, I learnt to be prepared for the worst when doing a shrink fit. When I have my next one to do, I think I’ll set it up in the press, just in case. Thanks for the lesson.
This one was exceptionally tight. Usually no more than 0.002/inch of diameter. I was just over that. Never want it to move.
I’ve had that same problem with press and shrink fits. Often the problem is not enough heat. I’ve almost switched completely to Loctite retaining compound now. Glad you got that sucker in there.
Yeah, good idea.
I learned to have a chaser after a press fit job 🍻
Those coax indicators are a pain to use. I always use the good old edge finder to find center. It works better and easier. Most people don’t know this, but it will find the edges of holes and pins just as accurately as it does linear edges. I use it all the time to find center by zeroing one side of the circular feature and the distance to the opposite side, then splitting the difference. It’s much easier if you have a DRO.
Love you working on old parts!!!
Glad you like them!
Great job keeping the farmers farming. It is a shame how quickly parts become obsolete, but a win for us. Thanks for sharing. I use my co-axial indicator the same way. manually turning speed, just nice not to be jumping behind the mill to read regular indicators.
One of these days I need to pick up a lathe and a mill, I don’t do anything nasa precision, but I need the ability to turn rotors, drums, cut wheel centers, mill heads, bore cylinders and cases on atvs. Luckily all those tasks have a higher tolerance for small inaccuracies. The biggest problem is finding a used lathe with at least a 14” swing that isn’t 12’ long
I even needed a beer after that pin stuck! glad the press was handy and it worked!
I love seeing these sort of repairs. It is good to see how you go about doing them and we learn a lot, thanks
Well done Josh. Every machinist that I watch has a “Whew!” moment when the interference fit is done. Good to see your preparation and urgency for the s*** moment. Good job bringing us along in the moment.
Thanks for watching
Happy days Josh, turned out lovely, hope you didn't feel too pressed 😂 cheers buddy, a shot well earned
Cheers Josh, That shrinkfit gave me an adrenaline rush!
You and me both!
I love prototyping and the company I work for has purchased its second 3D printer. A number of my fellow techs have been purchasing plastic and metal 3D printing machines. I am approximately 10 seconds into the video and have very high hopes. I also have a cat standing on me.
I think we've all been there on the press fit..:).. Good job you had the press set up ready to go!
Given that the baler was still working with a shaft chewed up that much, finding the center at 1/1000th is a bit excessive :)
Reminded me of my school days when I was a teenager in the 1960s - we made dry ice that way in physics lessons.
Great job, now have a cold Hamms and call it a day!
Great job Josh! A well deserved beer!!
Thanks
Thanks for the video. I know it takes extra effort to make the video while working. I am not a machinist, so watching your videos is like the first day of school for me. I know that there are different kinds and grades of steel but I do not know how to determine what it is unless it has a tag. I am glad that the shrink fit worked out. I sure do admire your skill. I am glad that you were able to help this guy and save him some money. It is always good to see you. I hope Rocky is doing good.
Thanks. The customer was super happy.
That was a Sphincter Tightness Factor of 9.5 at least when it didn't fit right away !! 😱
🇨🇦🤓🤟
That went great actually. I thought 3 thou was a pretty heavy interference when you were talking through the parts - but the beauty is that it isn’t ever coming out of there. Handy to have the press close by. ✌️👍
We did a similar one at work and unfortunately got stuck half way. The bastage wasn’t going in or out, so we had to start over and machine the pin out. Bummer.
Ive had that happen before. Makes for a terrible day.
That's a vicious looking saw blade. You wouldn't want to get anywhere near that!! It could do you some serious harm. But it made short work of that pin.
congrats on the 100k, been here since like 5k if i remember correctly, thanks for the content, love the cool stuff like shrink fits and whatnot, cheers buddy
Awesome! Thank you! 👍
Nice job, Josh. And nice save! Interference fits give me the jitters. Thanks and looking forward to your next video. Have a good weekend.
nice job Josh, glad its not just me that finds a coaxial easier to rotate by hand 👍
Morning Josh,
Wow, talk abt a coincidence.....the both of us are repairing a farm related item this week. Mine is turning and threading a piece of 4140 as the static bottom stub anchor shaft on a 3 point hitch for a 1963 JD 1010 cultivator tractor...its a part unobtanium any more....not one of my usual fixes but a friend needed one asap.....weather here is great, all except for the frigging black flies......and you know the saying.....Black Flies Matter...LOL.....nice fix....great work. Loved it !!!!!
Don
A cold one for you Josh. You earned it!!
Refreshing and motivating to see a “true life repair” of a valuable piece of machinery. I guess I’ve watched too many videos of machinists making “tools and toys.” I have enjoyed most of those, but this is really what it is all about!
Hey Josh, not a machinist but enjoy and respect your work!
Hey, thanks!
PHEW! That was close (to disaster). Nice job, Sir!
Ive had to redo a few before.
Being able to make your own dry ice is nifty. Thanks for the video.
Nifty and essential to what I do here. Closest place to get dry ice is an hour drive away.
Saving perfectly serviceable machinery one part at a time. Try that with CNC. Writing the program alone would probably exceed what you charged.
Want one or two parts use 'old time' shop machinery. Want a thousand parts use CNC.
I love your content. You have really made me want to get back into machining. I might have to setup a little shop. That Bridgeport is top of my list.
That was a high stress moment... averted..
Better to set up the press-shrink fit in the press with the press ready to press before heating the part while the stud is cooling off in dry ice. If the stud is even a tiny bit off axis even with a few thousands of clearance the stud will likely get stuck on the way down the hole. More often than not, the press I needed to avert a Oooops and not fun at ll re-do..
There is a tendency for metal to stick when they are close together, this is why clearance alone is not enough. Some means of mechanical aid (force) is often needed to over come this tendency for separate metal parts to wanna cling together.
Good one Josh . Plan B is always the press , preferably close by ! I like that boring head , although it is completely different to the D'Andrea i used to use . That had 3 speed feed & rapid return traverse . Cheers 👍
I'm having a hard time finding this thing. I know there was a unit just like it that I thought was D'Andrea. I could be wrong.
Always an education watching your videos.👍
Big thing about using dry ice vs LN2 is -109 degree F vs -320 degree F, you only get about one-third of the shrink; gotta keep that in mind. With LN2, the part probably would have dropped right in (at the expense of 2 hours driving to get the stuff).
Anyway, nice job there, it's always interesting to see how people approach a problem and get it done.
It would have been 2 hours of driving for dry ice, that is why I make it. LN2 would be 3-4 hours of drive time, making that unacceptable. I can't bill for time and materials to get supplies for a simple job. I wish I could get LN2, it just can't happen here, too depressed of a region.
I enjoy watching a machinist work. The machined metal looks good. An excellent job. I have a friend that has an automotive machine shop. I enjoy watching him as well. A great video sir. 😊
be able to bring back in service an obsolete piece of machinery is priceless.
excellent job
3 thou interference on a such small diameter is in fact a tight shrink fit so it needs a dry ice cooled pin in a 500 degree F bore,
I had to a very similar assembly and to my experience, it is a good idea to increase as much as possible the bore temperature to gain a bit of lattitude in the assembly process.
excellent video
Great video Josh, you always do cool stuff. Takes me right back to my farming and boiler making days for steam trains, traction engines as well, in fact anything that needed a boiler.
A rewarding repair!
I'm glad I'm not the only one who always goes the wrong way first with coaxial indicator.
So nice to see a true craftsman at work.
you could really see the wear in that pin once you started cutting it with the supersized death wheel
Interesting phenomenon occurs with interference fits. Done properly. if the inserted component does move is causes galling and we all know it's next to impossible to move or remove a component once galling has occurred.
Galling: friction adhesion.
That pin was so badly worn that I thought the wider end was machined that way. I didn't realize how difficult it is measuring worn parts. I'm enjoying the videos. Reminds me of the machine shop class I took in high school 30 years ago.
I've done a few sweat fits with the fire extinguisher dry ice method. They are pretty uneventful when they go right, and quite frantic when they dont 😂
Absolutely.
As long as the beer dose not open till you are done. Once the beer comes out the wrenches stay put away in my shop.( unless it's my own shit.)
Nice job Jake!!!!
I’m with you on a beer after a narrow miss!!!
Regardless, that design of boring/facing head is pretty cool. I has to be more rigid than the typical R-8 style head being clamped to the quill like that. Probably an indicator to move the tool out on the final cuts would make it pretty accurate. I don't recall ever seeing one like that used on a bridgey. Cool. Nice ice maker! And great repair....Beer is good! cheers 🍻
I wish it was more accurate on the dial. Great concept, but poorly executed
Topper always top and entertaining. 😉
Nice work
Thank you Josh!
Hahaha- could tell when the oh
sh!! - moment hit, when it stuck on you, and you got that adrenaline rush, and ran to the press, you had to yank on it pretty hard, but she went, glad it worked out. Another amazing job, and a very happy customer I’m sure for that savings!!!! 👏👏👏
One beer?? For that save, at least a six pack!! lol
Hey man - well done.
Very good metal work !
Great video love it
Just a note about sawing off the pin with a slitting saw, slitting saws are pricey but my favorite alternative nowadays is the 8 inch carbide tip blades they sell for metal cutting skilsaw type saws. They are cheap like 40 bucks and less kerf, I have one on an R8 arbor I use all the time for cutting down pieces too short to hold in the bandsaw, slotting, or even have used it in the angle head for cutting plate clamped down to the table. Works great and in 4 years now I am still on the first saw blade of the 2 pack I bought!
Nice. Great idea, I'll be using this.
@@TopperMachineLLC
Specs please .. Brand name, tooth count, RPM's, feed speed and depths, lube type, etc ..
This could be a great video with a chalk talk about the blade and how to figure out the right settings for different materials.
I wonder if any blade companies are brave enough to sponsor it with their product featured in the action shots
Nice work!!
Real good fix
Hi Josh & it's is Randy and i like yours video is cool & Thanks Josh & Friends Randy
hi there nice job john
Fine work!
Thank you! Cheers!
i was drinking a beer while watching the video
"You need a 'beer'. Nothing like a 'beer' after a fight!"
Bronn of the Blackwater
Shot and a beer, AKA Boilermaker nice touch!
You’re doing it right if you are looking for a good reason for whisky neat before you go to plan B or C.
Looking at the massive wear on the pin, what about the wear on the mating part? Cheers.
So much drama at the end! I'm glad it worked out.
Me too.
@@TopperMachineLLC what would you have done different? More heat to expand the hole more?
Was the base metal cast iron?
~ I HAD A COUPLE OF SHOTS OF CROWN JUST AS YOU FIRED UP THE HEAT...CAUSE I ALSO KNOW HOW THAT COULD HAVE WENT......PERFECT JOB DONE !!!
Lol, yup.
Thanks for taking the time to post this, I always enjoy "repairs" ! Cheers
Thanks for watching!
Good stuff
Like the idea with the beer
Good solution
5:13 Really cool camera effect, part doing the hula!
Beautiful Job Josh.
Thank you!
I enjoyed watching this repair. My best experience with a precision shrink fit was on the cutter head for an asphalt milling machine. It was 3-15/16 dia. And about 5” long. The interference was 5-1/2 thou so I specified dry ice and heat to 300 deg. F. Because of the bore length we set the parts up in a 30-ton press just in case, which turned out to be good thinking. There was definitely a bit of pucker factor as temperatures try to equalize quickly. Those dry ice fits sometimes make interesting sounds when seating. Thanks for sharing this one.
I used to do some similar sized ones. Since LN2 is not readily available here,dry ice is the best bet. We always went to 400° for safety. Needed the press one time.
Congratulations on 100k. Good job on the part too.
Thank you so much 😀
Just run across your channel. Great content.Great repair!
Thanks and welcome
Nice machining. Hi from Eastern Texas.
Hey, thanks!
You gotta give yourself more credit.👍
Lucky there was an unworn portion of the shaft from which to find center with.
Thankyou 👍
Couple hundred! I would have charged three times that but I also live in Northern California! Where everything is more expensive!
The workpiece setup is also interesting, with those machinist’s jacks that you don’t often use, we’ll catch them in another video, I guess.. 🙂
I should have talked about the setup. They were there to help cut vibration.
Nice one josh for a big guy you can move pretty fast 👍👍👍👍
When I have to.
Nice to have that press nearby!
Always be prepared
I never had a use for the coaxial indicators as I can do it faster with an indicol and interapid. But when I bought a cnc lathe they do work great for aligning drills. Also the slitting saw I wouldn't have thought of. I would have just used a couple drills to remove that. But that saw was fast.
Hi Josh, nice video, Kurtis says that shrink-fitting pins/bushes always give him an anxious moment, and Mark at Twin Sticks Garage always has a Coors beer at the end of his job to help him relax.
I don't watch either of those channels. But I'll have to look up Twin Sticks Garage. I'm always looking for good machinists to watch and work with.
I used to watch CEE, but it got too fake and sloppy for my liking. There are a lot of great smaller channels out there that do amazing quality work without all the extra BS.