Line boring excavator bracket. Offsetting holes to change pin centres.
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- Опубликовано: 27 апр 2023
- 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.
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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.
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!
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!
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.
Ich habe schon viel in diesem Beruf gesehen und gemacht, aber das ist echte Kunst! Mein Kompliment 👍
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.
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.
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.
Well done for a great video and good length. We learn on every job hopefully.
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.
Great video, I enjoy watching your RUclips videos, I work with degree qualified engineers who wouldn’t be able to fathom out the problems you solve on a daily basis.
Excellent work Oliver and like you said take what you learnt from this job onto the next, really enjoying your videos! thanks for sharing.
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 🤣
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.
It took me a few minutes to understand what the job entailed, but when I caught on I really enjoyed your solution to the problem. I always enjoy your videos! Thanks.
He has the patience of a saint ! I hope the customer appreciated the effort that went into rehabilitating this piece of equipment.
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.
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!
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.
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. 🎉
👏🏾👏🏾👏🏾👏🏾🎉 Great work! 😃 Thank you for sharing... exactly the video I am looking for since I am teaching myself to do this type of work.
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
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.
You should be proud of yourself making that tool from scratch. Works great 👍
Excellent engineering Oliver! So good I watched it twice. I like the long ones.
Thanks for your time!
I hope you were paid well for that job because that looked like a lot of work and complicated. You made a good job of it. Well done 👍
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.
Nice work, your fixture works very well.
Freaking impressive how you over come every challenge
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.
Another great video and demonstrations of your inventiveness. Enjoyed the content. Thank you
Another great video Oliver. RUclips videos are never too long when the video is interesting. Thanks for sharing 👍👍👍.
Thanks for watching!
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❤
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.
I love the problem solving and 'experimentation' - things don't always work as hoped, but you always learn something. Perseverance gets the job done.
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 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
Well done Job, al lot of work "moving" the holes, but you managed it. Keep up the good work 👍👍
Creative engineering, your customers are lucky to have your skill to call on.
Good job there Oliver. That machine line boring machine, and your skills with it, are getting better every time you use it. Thanks for sharing. Cheers
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.
Hats off to you this is some high level machining work with fairly limited resources
Nothing wrong there Oliver, line borer looks to work brilliantly, thats a job well done mate
You produce some very interesting work, I love it, it keeps me interested
That was great, nice problem solving. You could see that the old tool was blunt. The chips were real hot and color changed but when you changed to a new insert the job went much smoother. Thanks for sharing.
Very impressed with your practical, logical approach to these jobs. No fuss No bother.
Oliver, I think that you did a fantastic job! I like how you were able to work around different obstacles, design your tooling and make it work... Great learning curve for you! Ron...
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 🤣
Thanks for sharing great progress on headstock
That lineborer you made is a brilliant tool
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!!
Nice job, steep learning curve, A good old handmade thumbs up to you.
enjoy how you solve problems I hope you charge this customer extra, those Bessey clamps are hard to beat loving your channel
Good job! Love the improvised welding gloves.
Thanks for another amazing video.
Give yourself a pat on the back. Apart from those little imperfections, you have done an outstanding job especially when the customer wanted that extra work done.
Well done on this one,as they say old head on young shoulders,hold you're head up young man regards🚜🇬🇧🏴⚙️
Thank for sharing, I learn a lot 👍👍👍👍
That was a hell of off a job, nice !!
Nice job moving those holes.
A trick I used to use when a drill had wandered off centre was to cut a groove down the high side of the slope with a centre punch.
Basically make a little v channel. Let the drill bump across the channel until it has removed it. If it’s still off centre do it again.
This will allow the drill to cut only on the high side.
The other choice is to start with a slot drill of the same or similar size (2 fluted end mill). But we don’t all have a full set of those :)
Use that to flatten out the starting point of the hole. Once it’s flat put the drill back in.
I like your trick. I wouldn’t have thought to do that.
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.
This is only the second video of you i have watched. First was your turbo Ferguson. I'm not an engineer of any sort but I am mega impressed by what I have seen so far. Huge talent and much to modest. Going to tell all my friends to get watching.
Thanks Colin!
Really well done, I am impressed. Meeting your customer's expectations can be hard sometimes, especially if they are sprung on you mid-production. The new insert holder did work really well. As for the new bolt holes being off centre, if you had an end mill you could have started the hole with that, making the drill follow the new path. Having said that, your guide block method worked brilliantly. Thanks for posting, I'm still catching up, keep safe and well. 👍
My thoughts as well regarding the end mill.
Awesome video, thank you
Great job especially considering all the problems you had to deal with 👍🏴
Fantastic problem solving.
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
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.
Good job. A lot of work!
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.
I watched the whole one. Really good job man.
Perfect work
Glad to be a subsriber, you are an intelligent young man......
damn, that a complicated setup. Lots of planning into that job. Looks like a success.
Looking more like Curtiss machine with each modification, well done
Well learn as you go every day is different day 👍 👌
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 planing
Customer didn't want much did they. I was a Carpenter for over 40 years. One of my favourite sayings was. The job would be alright but for the customers. Then you have to look at it as what you get out. The varied experience now gained from having to overcome awkward requests. You now know way more than you did from straight forward re cuts. And have a good excuse to buy some more cutting bits and facing tools. Actual experience is way better than any other form of learning.
it’s not like it was a cosmetic request, if the hole centres won’t fit the excavator it’s useless. From that point it’s down to cost, much cheaper to modify that make a new one
Wow that was crazy, looks like you got here done hat’s of to my friend 👍
Nice job
A bit more explanation why the customer wants you to do these things would be nice in future 🤘
Another great video boss
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
That was a pig of a job, so you did very well
Well done.
Nice results
GREAT VIDEO!
Glad you like it!
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.
Well done
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.
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 🍀
like the setup of that tool to measure the dept of the cutter
Good job
Bit of an epic one but well worth the watch. Was sharing your frustrations at times. Maybe worth investing or hiring a mag mount drill. Could have been useful to bore the 60mm holes.
After watching your Chinese FLT job, i reckoned now or next time you would have cut the bosses off, weld up the flanges and restart with a fresh face.
Keep up the great work, .
Good video 👍you did a great job. It looked like you wasn't using the cutting edge correctly to me. I'm not a machinist, but did work as a Maintenance Engineer at Dagenham Engine Plant Ford. 👍
Thanks.
Yes, the tool was too low in the hole and was rubbing on the insert.
@@snowballengineering it looked like the insert needed to be rotated so it was cutting on the correct face. 👍
No, I’m not that daft to be cutting on the wrong side.
Excellent video, we all learning together, i would suggest bending the inside calipers to making easier to get into the hole, saw it on Keith Fenners channel,
Well done look good 💪👍
Very clever