Line boring excavator bracket. Offsetting holes to change pin centres.
ฝัง
- เผยแพร่เมื่อ 29 ก.ย. 2024
- Bit of a learning curve and bit of a training exercise with the newly made line boring machine, line boring and changing the pin centres on an excavator bracket.
Firstly, I made some offset pin washers that allow me to line the bars to the right pin centres. They are tacked into the holes and then the bars are slid through. The bearings mounts are welded into position.
After pre cutting the first holes, I decided to do the second holes differently.
I gouged out a few mm of metal at the tops and bottoms of all 4 holes where the weld material crosses over into the base material, this ensures a good thick layer of weld at the cross over.
I then bore welder the side of the holes to build up enough to cut out the new hole.
I then line bored all 4 holes.
A third pin hole was then wanted by the customer at 380mm pin centres. After roughly gas cutting where the new holes needed to be, the line bore was once again, set up and holes cut to sizes.
Last job was to drill the holes for the retaining bolts for the pins.
Hope you enjoy the video.
If you could like and subscribe, that would be a great help, almost at 10,000!
Thanks for watching!
Learning and overcoming problems, is what real world manufacture and repair is all about. How tedious it must be to have a job where everything falls into place first time. BTW the auto generated subtitles make a hilarious job of your Yorkshire accent. Thanks for posting.
I can’t only imagine what the subtitles are saying 🤣
Good job all things considered most places would not tackle a "one off" as there is no previous on which to base it. The end result given what was wanted and using the existing unit is excellent. Having had the benefit of seeing your approach (and possibly being wise after the event) it struck me that this may have been a lot easier with two new plates complete with new holes / bushes and the assembly welded back in place via a jig arrangement previously set up and welded in place for correct alignment. This "idea" seems to be a possible easier alternative method as I muse from the comfort of my armchair!!!!
That's what I thought also. Maybe leave the lone holes as they were and cut the dual hole area away. Then weld on some 40 or 60 mm plate with flame cut starter holes and bore them out.
You should be proud of yourself making that tool from scratch. Works great 👍
enjoy how you solve problems I hope you charge this customer extra, those Bessey clamps are hard to beat loving your channel
Nice job, steep learning curve, A good old handmade thumbs up to you.
That took a heluva lot of thinking to work out, most of it thinking on your feet. Well done, nothing to be ashamed of in the end result-- it will do what it is intended to just fine. Your line boring rig shows a lot of thought put into its design as well. Thanks for sharing!
Good job. A lot of work!
Great video
☹🇬🇧
Well done look good 💪👍
Another great job Olly, with the morse taper on the bar, can you not drill it and add a shear pin or tractor style round lynch pin to retain the drive head
I think the quill on the drill might be pretty hard.
@Snowball Engineering how about making a two part cylindrical clam shell clamp to keep the taper tight and will hold it in reverse when you withdraw the bar
Oliver as a machinist from a shipyard I am very impressed with the machine you built and the results you are able to achieve. I am looking at trying to duplicate your line boring machine to do some side jobs as I am now retired. Thanks for the inspiration and for sharing the failures as well as the great results, cheers Paul. Victoria BC Canada
This is Jack many years in a machine shop and managed many, and owned two. when you're using a boring bar like you are using it, I believe you may need a radially relieved tool. The tool you're using looks like a regular lathe tool. According to the inside diameter, I have seen boring tools in small diameter holes, relieved as much as 15 degrees Under The Cutting Edge. Also you need to be cutting on Center, by drilling the holes through the bar a little lower than you have maybe. Breaking tools and them not running correctly is a good indicator the geometry is not correct.
Interesting job. The boring setup seems to work well. Could you not have opted to use shrink fit , heavy wall steel bushings (home made) instead of weld. The original strength would have been somewhat less compromised (thermally at least) since the bush hoopstrength would contribute to the strength overall. I really enjoy your problem solving and patience as you overcome difficulties.
Great techniques + very well filmed. Getting great results with your line borer. You're on your way to becoming the Cutting Edge Engineering of the northern hemisphere!
MIG attachment for the line borer next! Love watching how you figure these jobs out I show these types of video to my metalwork class to show what you can achieve with a bit of ingenuity.
Make a line boring machine, easy. Do some line boring, easy. Do some off set line boring, easy. Do some off set line boring with over lapping holes, now your talking. And you make it look easy, good work Ollie.
Hello brother for Ukraine, when we will win this war, come in our country, i will be happy see u in my home, u are great master, thx u for ur work
Thank you! Hope you’re keeping safe.
would it have been possible to over bore the holes using excising centres,then machine sleeves with off centre holes and weld in ??
That old saying. There’s more than one way to skin a cat.
Great video, I enjoy watching your TH-cam videos, I work with degree qualified engineers who wouldn’t be able to fathom out the problems you solve on a daily basis.
That certainly stretched the legs of your line boring rig. I hope your customers appreciate the skill you have to achieve these modifications and repairs.
It wasn’t enjoying life with the old tool. Much easier on it with the new one.
If you get a similar job, consider the approach of cutting off the bosses (of the holes to be moved) and welding them back on in the new position; that would get you less interference between those bosses and those of the new holes.
Trouble is the bosses aren’t just welded on the sides, they go all the way through the side plates. Would of been quite a big job to do that and would still of needed line boring afterwards. Thanks for the suggestion though.
I couldnt help think the same but the reply reminds me i know nothing lol
Great job, nice to see the DIY line boring tool is doing a great job.
When welding inside the bores and other tight quarters, remove the gas shroud, it'll give you that little extra room.
How will the gas shield the weld though?
@@snowballengineering In the confined space like this, the gas builds up, as it can't escape the area of work. You will need to increase the gas flow, a bit of trial and error.
You can also use flux core, if it's tight quarters and gas coverage not working.
That was a pig of a job, so you did very well
I’d like to see the application of that, especially the addition of the 60mm holes. Actually if you have time, It’d be nice to see a follow up compilation of past projects. I do appreciate your humility in acknowledging you haven’t perfected certain things yet. Thanks for sharing.
I hope you get some easy duty jobs once in a while. Every job you show is a beast and you handle them like they were a walk in the park! Once again spectacular performance from start to finish. Your customer base is damn lucky to have you around.
Well done for a great video and good length. We learn on every job hopefully.
MAY I SUGGEST YOU GO AND LOOK AT CUTTING EDGE ENGINNEERING AUSTRALIA. . ABOUT LINE BOARING. AND OTHER THINGS HE DOES . GOOD LUCK .
Excellent work Oliver and like you said take what you learnt from this job onto the next, really enjoying your videos! thanks for sharing.
Check out CEE- Australia. He has a rig which can auto weld inside bores
I’ve seen. About 10x the price as well though 🤣
Works well, should earn you some good money.
Hopefully! This job was great for a bit of on the job training with it.
Great to see that homemade tool in action again, I think once you sort of the chattering with some more testing of different cutters/tools it'll be even better! Easy money once you get some more on hands experience with this, keep up the good work man
Good work around and the driver of the machine won't care abt the finish one bit by the state of the pins. As you said you learnt loads, you can put a slot drill or end mill in the chuck and make a flat on a raduis for drill spotting.
The brake on the drill is a bit worn so she doesn’t like any kind of sideways load. Definitely learnt a lot on this job.
Good job Snowy, ........... I've always thought line boring had an element of the black arts about it.
Take your personal observations and apply them to make changes to the future procedures. But don’t use them as personal criticism as you’ll go down a black rabbit warran! Excellent video Well thought out and executed with good result.
The easiest way to get a flat spot for drilling is with an end mill, then spot drill and drill normally. The first tool you used for the line boring looks like it needs a bit more relief under the cutting edge as it looked like it was rubbing and limiting the cut.
Fair play Olly you have worked the Oracle there. That takes quite a bit of working out. I can understand the outcome but how you got there fried my little brain. Lol highly enjoyable thanks mark😁
It did take a bit of thinking about 🤣
I really appreciate you putting all of the information into the video. The tips, tricks, and lessons learned are really helpful for me personally. I’m going to attempt to make my own line boring setup to fix the hydraulic coupler on my excavator. Keep up the good work and thank you for sharing!
👏🏾👏🏾👏🏾👏🏾🎉 Great work! 😃 Thank you for sharing... exactly the video I am looking for since I am teaching myself to do this type of work.
Olly your observational skills are impressive! When you were observing the progress of the cut with your arms linked behind you I was reminded of an old shop teacher I had in high school. He was always on the prowl for improprieties in our work. He was much like you in his approach to his work. We were encouraged to work within the demands of the work required but to always think beyond them for the merits of the work. Number’s on paper don’t always tell you what the job really requires. Best lesson I ever learned., thanx Dr. Olly!
Cracking job Olly and a bit of learning too !
We've just finished converting a pto driven dual head timber winch to a digger jib mounted unit, using a 45kw hydraulic motor which required making a headstock mount. I'm used to working to tenths of a thou for toolmaking jobs, but since I retired the jobs have changed and getting digger pins to fit requires a bit more relaxation on my part, but no less "difficult" under certain circumstances, well done mate.
That sounds an interesting job. I know what you mean, the pins need a good amount of tolerance which will seem counter intuitive to your toolmaking jobs.
Well learn as you go every day is different day 👍 👌
You keep saying you don't have experience with line boring but you certainly have lots of savvy to carry the day. Wonderful thought processes ans skills. You are to be admired.
you could have put am endmill in your radial drill and made a flat spot first and then drilled your hole . I have been using left hand boring bars for my tool holders they are round and you just cut them off to length
Hi Oliver , you had your thinking hat on whith this job mate, well done working your way through the problems as you came to them, it's been a steep learning curve mate but you did a great job in the end. And this line boring will get easier as your experience grows whith it. Thanks for the video, stay safe, best wishe's to you and your's, Stuart UK.
Oh, and here’s to hoping you have/can get a camera Karen like Kurtis has LOL!!! He’s a fine mate for sure. Good luck getting your bore welding set-up done! Cheers!!
Well done on this one,as they say old head on young shoulders,hold you're head up young man regards🚜🇬🇧🏴⚙️
Check out Curtis at Cutting Edge Engineering on TH-cam He has an line boring attachment that lets you weld a perfect circle around the hole to add material. Cant remember which vid but its in there somewhere. You guys do similar repairs. Great job and thanks for the videos.
I know this is an old video and you might not get the comment, but you're taking way too big of a cut with that CCMT insert. I would think .100 of an inch would be too much. Maybe a millimeter depth of cut would be Max.
13 minutes in and although I'm NOT an engineer, but enjoy this and other engineering channels. I thought that you would have welded the original holes up and then drilled and line bored them to size in the new position, as I say NOT an engineer, 40 minutes in I'd have run for the hills :) :) might it have been quicker/easier to make it all from scratch.
Oliver Excellent work But you really had no need to air gouge out the extra pieces Yes as I got further into the video Use .9 mm wire much more versatile and greater penetration As I said in a previous post 25 Yrs boring my way round Australia and when I started if anyone knew less than me they knew a lot I am a tractor diesel mechanic from Ireland
Look up Climax their brackets are easily copied and very sturdy and of course their bore welder lot of info on their website
Don’t get too carried away with depth of cut as better take two bites and not break your inserts when you get into it and trying to do big Jobs with 1 insert it gets interesting Insert quality has improved heaps since we started in 1994
What dia bars u using we used 57 mm bars bit heavy but strong Also inserts Kennametal American company and Lamina Swiss you won’t beat them I expect that your area would have a few ploughs ,old story if point / share is not harder than the ground it’s ploughing or breaks off at the first stone no good Inserts are the point of your line boring machine Most of the dedicated machinist will go about RPM speed of cut etc I would say you can rotate etc but the important bit is your inserts and the rest will follow There’s a face book page run by a top Aussie Line borer here in Perth Some helpful stuff on it and of course as is Fb some nonsense also Good luck 🍀
😂 I knew that shim would drop out 😅must be a fairly large 360° that fits the stock plate. Jeez setting up is 9/10ths of the job phew 😥
Class work, great to watch!! Would cutting oil have made any difference?
Well done Job, al lot of work "moving" the holes, but you managed it. Keep up the good work 👍👍
Wow! The second part of this mess was a real head scratcher. Most of us would’ve just taken off the leg at the base and cut a new one and then just drilled three holes out of a 2” thick chunk of steel.
When a tool sings like that one when it's cutting that's called chatter. Chatter is a destructive force that will break your tool tip and leave a bad finish on your machine surface. Slowing down cutting speed would be the first step to minimize the chatter. Increasing the feed rate at the same time might help also.
That was a lot of filler weld. Why not cut the 4 sleeves out of the plate, enlarge those holes and put them back in. Then you'd only need a minimal weld to bore to repair the wear.
Nothing wrong there Oliver, line borer looks to work brilliantly, thats a job well done mate
Excellent engineering Oliver! So good I watched it twice. I like the long ones.
Thanks for your time!
Hi I'm so impressed with your engineering skills I don't know what to say, I just hope your customer appreciates what was needed to complete the work. Well done you.
The only question remaining is what did it cost? It's a massive re-machining job thats not quick or easy so what were the set up and machining times - if you don't want to mention the monies?
What a job. I don’t know many people that would even have attempted that. I guess if you did it again you would cut the large boss off and reposition that one. Like most bespoke jobs you set off on a route then think of a better way when that doesn’t go to plan
Center punch then pilot hole maybe stepping up again towards final size
How I make the tool to make the holes in a line, it seems that I use an advance of a milling machine, I would like to know how I make it, I appreciate your help, pure vida desde Costa Rica
ooo just stumbled across your channel looking at my analytics audience tab after watching a few videos am I ok to add you to my list of Featured channels? :) oh and new subscriber :) I also could do with some advice I have a jcb TLT 3 toner the pins & eyes at the arm are worn quite bad is this fixable? so for example on flat ground lifting a pallet the left side (looking out from the drivers seat) is quite a lot noticeable lower when lifting.
Yes, please do!
Anything is fixable but hard to say without seeing the issue.
@@snowballengineering could you send me your number so I could fire some photos over?
Love your videos and your spirit but if it wasn’t better value for him to buy a new one than have you do it you need to charge more.
Don’t under value yourself!
Good planing
Would it not have been better to mill out the hole oversize to the final dimention then sweat in a plug and redrill, rebore to final size. Carbide insert tools do not like intermitant cuts, your better of with good quality hss bits till you get an all round cut. Far too many adverts hence the dislike but an interesting video.
Nice! Learning by doing! Wondered if that setup weakens the whole thing-a-matron...
I think I'd just cut the hole out, and fill it with a chunk of hollow bar bored out with 2mm weld it in, then align bore it..
Why not make an adapter to turn the boring bar with a drill to bevel the holes, plus the adapter could come in handy later for who knows what!
This was epic, job looked a right b#st#rd, hope the customer appreciated it 👍
Couldn’t you have started the off center holes you drilled using an end mill first?
Give a look to Cutting Edge Engineering, Kurtis has a great channel.
you should watch this channel: cutting edge engineering Australia, he learned on the job as he was getting started.
would end mills adapt to your radial arm drill? they would start the off center hole for you and not deflect like the drill bit did...
I’m quite impressed that cheap power feed stands up to some fairly heavy use. I have the same one on my milling machine, it gives me a little hope it’ll last a while. On the whole your line boring machine is doing a cracking job.
I remember the first time I seen that they have a plastic gear being driven I could hardly believe that they will hold up regular use, yet it seems they do just fine with it.
Great engineering skills check CEE Cutting Edge Engineering he does a lot of videos on line boring and the tooling he uses
Quite a few changes on this one, doing great hope you get paid well enough
why didn't they just make a complete adaptor?
Another great video and demonstrations of your inventiveness. Enjoyed the content. Thank you
You produce some very interesting work, I love it, it keeps me interested
Glad to be a subsriber, you are an intelligent young man......
Great job, mate. Good to see the Home-made Line Boring machine V2 in action. No matter how many years we have spent in a trade... we are always learning. 🎉
I hope you charged this guy an assload of $$$$!!!!
I hope you get to read this comment, Oliver, because it's that much older, and I have some good advice for you, which I hope you will check out.
As you rightly said, you are new to line boring, so you are going to make mistakes, and of course you will. It's the natural way of learning.
For now my only criticism which another viewer commented on is that with your particular set up meaning, the boring machine, you are taking much to big of a cut. Little steps lead to bigger things Oliver, little steps.
I know I mentioned this on a previous video of yours, one more recently, but I would like to suggest that you really do check out CEE, Cutting Edge Engineering Australia.
The guys name is Kurtis, with his partner Karen and their inspector, Homie. You can learn a lot from him about gouging, torch cutting, plasma cutting, welding, and everything there is to know about line boring.
His main bread and butter, if you like, is his verious types of lathe and milling work where he rebuilds parts for heavy machinery. Replacing complex hydrolic moving parts and the use of a spectacular vertical honing machine.
Please go check out CEE. What have you got to lose?
I’ve been watching CEE for years. That’s one of the reasons I started my channel. I also watch his outtakes at the end which shows his jobs don’t always go as smooth as the main video shows either. 😆
Freaking impressive how you over come every challenge
Keep on doing what you are doing. May be new territory, but you have the skill set to work it out and make it work. As a one man band, you manage admirably, to get the customers job done. And done well!
Excellent content.
Belt and braces engineering. Top job. Thanks for the❤
Ich habe schon viel in diesem Beruf gesehen und gemacht, aber das ist echte Kunst! Mein Kompliment 👍
Mate an old bloke once said to me “It’s not a clock ur making”
i think will be easier to cut 2 ears and weld them 20 mil further
The hole isn’t going to get a whole lot of wear being only a pin though is it? You’ve really done a good job with that mate 😊
Brilliant engineering you should be snowed under with orders
The rpm.s are way too high for a good finish and tool life
stick at Oly it subs will come with good content like this
Fantastic problem solving.
Thanks for another amazing video.
May i sugest getting a morse tapper drill chuck for your radial drill and start the hole with a spotting drill. A spotting drill is much more rigid and will get your hole started with less risk of walking on you.
The problem lies with the brake on the radial arm not being tight enough to hold the drill in the right place otherwise I could have done that.
Nice work, your fixture works very well.
make a set of centering cones to fit on your boring bar
You did ok, it wasn't the easiest of jobs.
Amazing work as always! For your problems with the weld buildup in the holes, maybe try using some 7018 stick electrodes and you can give them a bend to fit into the hole. If you keep a needle scaler next to you I bet it'll go just about as fast as the MIG.
It’s a long time since I’ve done any stick welding, that could be just as problematic 🤣
@@snowballengineering Gotcha! 😂
Thought I seen some stick welding, maybe gouging
Thank for sharing, I learn a lot 👍👍👍👍