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I am building a snowplow mount for a John Deere telehandler. I'd like to bend some 1/2 plate for the alignment into the implement. The chart says I'll need 33 tons per foot to bend a 90 in 1/2 plate using a 4" die. My question is if I can fab a simple angle iron die and pull off a 45 degree bend? I've see photos of guys getting some dandy bends with homemade dies... I thought I'd give it a try. The tabs are 14" which should put me at about 40 tons. Of course a 45 degree bend should be less. Any thoughts? I can heat it up if need be.I know I can build the part using straight side plates. That has been done already. I'm ramping it up for this one Pic 1: Flanged designPic 2: Lazy straight side designThe orange plate is existing on the plow... it's orange Attached Images
Reply:A quick glance at my Northern catalog shows their 40 ton press brake is rated for 1/2" x 4". You are going to have to build a mighty strudy anvil and die to bend 1/2" that long and not deform the press brake in the process.Why not just weld this on? Simple and easy. At 45 deg, even 2 90 deg angles on the plates will give you an already preped bevel to fill..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:You would have a MASSIVE home made press to bend 90" of 1/2 plate!!
Reply:Originally Posted by DSWA quick glance at my Northern catalog shows their 40 ton press brake is rated for 1/2" x 4". You are going to have to build a mighty strudy anvil and die to bend 1/2" that long and not deform the press brake in the process.Why not just weld this on? Simple and easy. At 45 deg, even 2 90 deg angles on the plates will give you an already prepped bevel to fill.
Reply:I've bent 3/8" x 8" in my 20 ton press with home made brake, but I had to use a long cheater bar and junked the jack afterwards. I've got a thread with pics somewhere. I would think that if you heat it up to bend it, it shouldn't fight you too much. I bent the 3/8" cold in a very narrow die. I want to say it was 2 1/4", but made of round stock so the more you bent the piece, the smaller the die got.My name's not Jim....
Reply:what would be wrong with scoring, heat and bend, and weld the crack back?
Reply:Would be no problem if you gave it some assistance by heating it . Just for such a little job and not a production run.
Reply:I'm not even a bending newbie, but I read something about this before. I did a quick search and can' find what I was reading.Tonnage is related to length, material thickness, and BENDING RADIUS. For example it takes more tonnage to bend a 90 with a 1/2" radius than to bend with a 1" radius.For your application of just wanting a 45 for use attaching the blade, I don't think you need a really tight radius. Go for it.
Reply:Thanks everyone for your input and ideas. I went ahead and gave it a try. I made the die using some 2-1/2" x 1/4" angle... the heaviest I had. I welded the 14" pieces of angle to a piece of 1" plate I had laying around. The plate was only 12" inches ling so the angle lopped over by an inch on each end. The angles are spaced by 1/2" down the middle which gives me a 4" mouth on the die. The tables said it would take 40 tons to bend it... and it took exactly that. Everything held up perfectly. I was really worried the angles would collapse, they didn't budge Still need to make the remaining parts. More to come.Picture 1: Pieces cut out on the cnc. Did 20 ipm because I didn't want to press my luck with this nasty piece of scrap (that was cut out on an old bucket).Picture 2: The homemade die, note the angles lopping off the ends Picture 3: Pressing the first part. Note I cannibalized my northern brake. The stock die is too narrow. 1/2" requires a 4" die.Picture 4: Looking from the endPicture 5: The finished parts. Yeah! Attached Images
Reply:looks pretty darn slick to me. even better that you got to reuse some scrap from an old bucket.miller... 225g, s32p, 250x, 304, 12vs, MSW41 victor o/a thermal dynamics cutmaster 50 lenco panel spotter hobart hf-boxG3 Farms.....raising cattle, hay, kids and hell, ...oh yeah I'm a fire sprinkler contractor by trade.
Reply:Down & dirty tooling well done forhire! I know this feature is just for easing/lining up the tooling and has no stress on the bend, but I'm a real fan of easing the lower edge of any flame/plasma cut edge on the break line. Usually an 1/8" chamfer or so with an angle grinder along the edge not across the edge.Again, well done! (shop built tookig can really stack up after a while)Matt
Reply:Finished machining the upper pockets out of some 1" plate. One of these days I should get a torch Here are a few pictures of the progress. Still need to scrounge up a 4" wide piece of plate so I can cut the last piece. Maybe Monday I can test the fit on the machine Attached Images
Reply:what purpose does the bend you created serve? I initially thought it would be to help direct the snow / dirt whatever outwards from the path of the tractor, but the cad drawing has these inwards from the edge of the blade?
Reply:Originally Posted by jdchmielwhat purpose does the bend you created serve? I initially thought it would be to help direct the snow / dirt whatever outwards from the path of the tractor, but the cad drawing has these inwards from the edge of the blade?
Reply:ahh, makes more sense. keep us updated! the pics are interesting so far.
Reply:Originally Posted by ah1988couldn't you just cut an then weld the two pieces instead of bending them and going through all that work to build a machine?
Reply:A bit more progress today. Dry fix the parts and discovered the upper plate was off by a half inch. Wasn't an issue, machined them down and beveled them. Should be ready to assemble tomorrow.Picture 1: Test fit.Picture 2: Test fit from the side... note the 1/2" gap. Picture 3: Milling the plates down to the finished size.Picture 4: Milling the bevel on the plates.Picture 5: The plow. Attached Images
Reply:Removed the plate from the plow. Everything is welded up. Still need to remove the hydraulic cylinder and pin the plow position. The lift cylinder won't be needed because the telehandler can lift and tilt. Almost done. Snowed in the foot hills last night Attached Images
Reply:Another really fine job.I especially like how the welds are sized to the smaller plate instead of huge bevels on the thicker plate. I've seen people that think the weld has to be near a full penetration weld, not realizing that the smaller piece of plate is the limiter. Leastways, that's always been the way I figured it. I suppose tearout could be an issue....but??????? (Big shrug)"Any day above ground is a good day"http://www.farmersamm.com/
Reply:Originally Posted by farmersammAnother really fine job.I especially like how the welds are sized to the smaller plate instead of huge bevels on the thicker plate. I've seen people that think the weld has to be near a full penetration weld, not realizing that the smaller piece of plate is the limiter. Leastways, that's always been the way I figured it. I suppose tearout could be an issue....but??????? (Big shrug)
Reply:farmersamm, Yeah I did match the beval to the 0.5" plate. I didn't figure it would gain much going full root. Lazy as usual. Snows in the foot hills so we'll get to try this baby out soon enough
Reply:Nice work. Do you have any pics of it all hooked up (and with the telehandler shown too 'cuz don't we all love equipment???) Lincoln AC225 & MigPak 140, Lincoln Magnum SpoolGun, Miller Spectrum 375-X Plasma, Syncrowave 200 TIG, Millermatic 252 MIG, Miller Digital Elite, General 7x12" horiz/vert bandsaw, 3' box/pan brake, 20 ton press, milling machine, 12x28 lathe, etc.
Reply:Originally Posted by AquafireNice work. Do you have any pics of it all hooked up (and with the telehandler shown too 'cuz don't we all love equipment???)
Reply:Nice work, looks great. I'm interested in the quick attach on the telehandler, was that original/manufactured or shopbuilt?Looks like it's almost time to turn over the cutting edge on that plow."The reason we are here is that we are not all there"SA 200Idealarc TM 300 300MM 200MM 25130a SpoolgunPrecision Tig 375Invertec V350 ProSC-32 CS 12 Wire FeederOxweld/Purox O/AArcAirHypertherm Powermax 85LN25
Reply:Originally Posted by noriteNice work, looks great. I'm interested in the quick attach on the telehandler, was that original/manufactured or shopbuilt?Looks like it's almost time to turn over the cutting edge on that plow.Spent a better part of the day machining the upper eye plates for the last adapter. Even with the completed cut paths it still takes about an hour and a half to machine each part on the cnc mill. The machined eyes look great but I have another plow to hookup next week and decided to sort out doing the eyes on the plasma table. Took some time to sort out the edge start because my machine will only pierce 3/4". But once dialed in... I can cut these parts out fast (if 11 ipm is fast ). Still need to bevel them and such but plasma cutting them saved a LOT of time The design was changed a little to accommodate the width of stock I had laying around. Attached Images
Reply:Very nice work!Ya gotta spend money to make money!
Reply:I hate snow,won't be long here either.......Maxus Pro-125 MigChicago Electric 90 amp DC flux-coreLincoln Electric AC 225 tombstoneO/A torchM/O mini-torch10 acres of flatland15 acres of holler
Reply:I have finally got the cutting of 1" plate down on the cnc plasma. Whipped out the eyes for the fixed link. Last time they were hand cut with the torch. These look a lot more professional. Attached Images
Reply:Finished the fixed link. Turned out to be a lot shorter than the last one. Too bad I didn't have enough material to cut the entire link from one piece. Notched the pipe and welded it up. Attached Images
Reply:Cut out another set of side plates today. Same as the plates for the last adapter. Bent the flanges using the homemade 4" die. The die performed perfectly. Decided to weld up the bend reliefs on this set, giving it a more polished look. Attached Images
Reply:Your a really good fabricator ForhireMaxus Pro-125 MigChicago Electric 90 amp DC flux-coreLincoln Electric AC 225 tombstoneO/A torchM/O mini-torch10 acres of flatland15 acres of holler
Reply:Originally Posted by dugndeepYour a really good fabricator Forhire
Reply:That's me,if I can make it or already have it I'll do it,why pay top dollar for something when you have it laying around just taking up space anywayMaxus Pro-125 MigChicago Electric 90 amp DC flux-coreLincoln Electric AC 225 tombstoneO/A torchM/O mini-torch10 acres of flatland15 acres of holler
Reply:Originally Posted by dugndeepThat's me,if I can make it or already have it I'll do it,why pay top dollar for something when you have it laying around just taking up space anyway
Reply:As promised... an action photo... sort of... I had to get out of the machine to take the picture. As you can see it did a fair job. Using a rubber edge on this plow. Attached Images
Reply:Here some photos from the fit up of the second adapter. I started by removing the original hangers with the plasma cutter. Tack on the side extensions. Put it on the machine and tack up the eyes and the side mounts. Yeah that's snow blowing in the door... I should have finished this a few days ago but had more pressing work. Enjoy. Attached Images
Reply:I bet you can stack snow with that! And I thought we were getting it high with the 988 at 20' to the lower pins and driving up the pile to push it higher..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Originally Posted by DSWI bet you can stack snow with that! And I thought we were getting it high with the 988 at 20' to the lower pins and driving up the pile to push it higher. |
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发表于 2021-8-31 23:45:01