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Das Volk posted:Crossposting this - the brake caliper bolt backed out, caliper hit the wheel, tearing the entire assembly out. Pitiful, I've seen lower 
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Nov 5, 2009 20:48
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With regards the blades running for freedom, I understand the term used is "Material recovery" at that point.
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Nov 11, 2009 21:47
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I need to bring you guys some photo's of the failures at work, cam followers I can't lift going bad & destroying their bearings (that I can fit my head through). We were lucky & didn't have to resurface the cam though (8ft diameter, 12" wide per lobe). Also, the brake disc we had to get skimmed at a powerstation workshop, as no-one else could skim a 3m diameter brake disc 
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Dec 12, 2009 14:34
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Automotive stamping presses: 4600T capacity, 4 stage fast link mechanical & servomechanical 2d vacuum transfer systems, 2400T capacity, 6 stage servomechanical 3d grip transfer systems.
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Dec 13, 2009 12:29
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Is someone going to start an 'oversized mechanical porn' thread or do I have to go snapping pics at work tomorrow & do it myself?
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Dec 14, 2009 21:09
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So how often do containers get hosed up? It can't happen much as a percentage, can it? I have no pretty pictures, this is a strange month & nothing has broken at work.
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Feb 6, 2010 18:29
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fist4jesus posted:I'd so try and figure a way to salvage one in secret. Even a 20" half full of water would weigh like 18 tonnes? you'd need a pretty big boat to contemplate it, unless you just wanted to tow it back to port & borrow a crane there. Then you open it & find 25 Chinese bodies, not the 1908 Jag you were hoping for. It'd be kinda fun if money were no object, just playing gigantic ocean lucky-dip. Get boring soon?
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Feb 7, 2010 16:43
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CommieGIR posted:Some people fail to understand that your car cannot breathe water Some people fail to understand their engine requires air.
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May 30, 2010 12:43
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rscott, are those domes hydro-formed?
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Jun 10, 2010 20:09
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Jusupov posted:We use MEK to clean molds. Fun stuff when it melts your gloves. Smells nice too. We use MEK as a printer solvent - fun fact, it's a constantly circulating ink stream, so the solvent evaporates continuously when the printers on, whether or not it's printing
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Jun 18, 2010 19:43
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I used to work in white goods testing & we did highspeed video of drums failing at high speed, in an armoured underground bunker. They tend to be fine up until 11000-11500 rpm before they wobble. Then you have to go see how much of the video kit survived Unfortunately I have no video to show.
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Aug 2, 2010 11:59
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Paul Boz_ posted:Undiluted industrial ez-off is good at cleaning the worst oil stains off of concrete Is this true or does it just dissolve the concrete?
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Apr 4, 2011 22:28
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Bucephalus posted:The valves are marked either "INT" or "EXH", followed by "HERCULES" and the part number. I want an engine where each part is labelled like this. Every single part
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Apr 7, 2011 22:09
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Wiglaf posted:not if you know what hotspots are, unless you don't mind pulling out all of your ignition advance. I know not of your spark ignition, It's compression ignition & direct injection all the way over here buddy.
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Apr 9, 2011 20:37
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I wonder how much of a Haynes manual I can engrave onto a crank?
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Apr 9, 2011 20:48
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It's impossible to get a good photo, but this is one of the presses I manage: [ It's a 4000T(combined pressing force) Komatsu 4 station mechanical transfer press. The transfer system is the bit that picks the panel up from one die & moves it to the next die, from the inside it's the white bar running horizontally. We're looking from W1(entry) towards W4(exit). The feeder bar we're looking at is lifted & pushed by massive(2m diameter) cams in the basement. The lift system is a pair of pushrods running along under the floor, driving massive rack & pinions. [] This is one of the lift gearboxes, the only pic I got that didn't have one of my co-workers looking 'thoughtful' in it. Wait, there's some holes in the side - what did we take out? Well... [ That looks okay, what about the shaft supporting it? [ Well, not so good. The shaft on the right is eccentric by 1.5 mm, to allow us to set the intermesh between the left & right pinions correctly. The collar on the left sits between the bearings at each end of the gear above. The little shred on the far left is almost all that remains of the rear support bearing. This locked up the feeder system, meaning the tooling inside the press couldn't be removed (the feeder has to lift all the way up before the dies can be driven out the sides of the press), we have no spare shaft, the Japanese manufacturer has no on-the-shelf spare for this 20 year old press & was reluctant to release the drawing, they quoted 2 weeks to make & ship a new part to us. Thanks Komatsu. Anyway, with threats of legal action we got a drawing out of them & got a shaft made locally in 18 hours. Also, it took 8 hours to pull the shaft out of the gearbox, it was that badly hosed. I didn't get a picture but the 'master' pinion that drives the double gear above is really badly damaged - 3 teeth in different locations are down to 50% width remaining - probably where the bearing rollers dropped out & got munched like candy. We'll build up some stock with crossed fingers then strip it down at Easter & send the gear to be copied. cakesmith handyman fucked around with this message at 21:48 on Oct 20, 2018 |
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Apr 15, 2011 21:55
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Dave Inc. posted:I'd love to hear what kind of noise one of those makes when it shits the bed, or did it just kind of sieze up and grind to a halt? They tend not to make much noise when they go wrong, they're such a bastard to fix that it's worth coating them into sensors. With this failure the excess torque in the lift system was detected by the PTO (which takes power from the idle end of the slide drivetrain & sends it downstairs to the cambox) & shut the press down. Best failure I got to witness was the bearing of the lift cam follower collapsed, Production stopped the press when the shrieking became too much, sparks were flying out of the cambox, 2 storeys up. It took 6 hours to cut the follower off the bearing, then we had to cut the bearing & pin out before fitting the spares we actually had.
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Apr 16, 2011 22:24
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Nope, oil really does break down - look up Oil shear sometime - you can literally 'smash'/'chop' the long molecules into shorter useless poo poo.
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Jul 20, 2011 21:18
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Ossetepo posted:Paper towels So the paper towels sat against the igv's as it started to spin, remained lodged creating a local low pressure zone behind a handful of vanes, causing enough imbalance/turbulence to lunch the entire rig. Have I got that right? I nearly got a job with a blade caster a few years back, pay was poo poo, job looked awesome.
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Jul 23, 2011 12:44
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I fight so hard for money for regular vibrational analysis & online monitoring at work, yeah it amazes me that wouldn't have shut down automatically with sirens blaring.
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Jul 23, 2011 14:03
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einTier posted:I'm trying to drink to forget. And numb the pain. No chance of insurance covering it I suppose?
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Aug 7, 2011 06:24
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In the uk only the rightmost lane can cross the flow of traffic, this prevents everyone who wants to go straight from waiting behind the one douche who wants to go right. Generally anyway, I'm sure someone will now post an example to prove I'm wrong. Only a minor mechanical failure, but the following damage made my car a writeoff apparently:   So I bought it back for 10% of the original value. cakesmith handyman fucked around with this message at 10:07 on Aug 8, 2011 |
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Aug 8, 2011 10:03
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The Scientist posted:Where is your windshield wiper fluid reservoir cap? Long gone. I check every one I find in a scrapyard but they're all broken or gone for some reason. At this point I might just buy a new one.
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Aug 8, 2011 14:54
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Revolvyerom posted:Looks like his radiator got pushed in a tiny bit, and I imagine straightening the frame at all in that front is prohibitively expensive, make it cost that magic amount to total a car out (for insurance companies it's a % of the car's overall value). Often they will let you "buy" it back (presumably for parts or to do the work on your own dime) for a very cheap amount. Radiator is unmoved, frame is untouched. Basically the cost of a new hood & bumper painted & fitted was over the magic percentage so yes I got 90% -my excess back. Funnily enough, the hood now latches better than before...
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Aug 8, 2011 23:02
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Maker Of Shoes posted:Sure I guess but I can't imagine it being very hard for molten hot shrapnel to bounce around in that shop. And isn't brake fluid flammable to a certain degree? I don't know about flammable, I think so, but definitely extraordinarily toxic in the strangest ways. Think tasting chlorine for the rest of your life, as well as total renal failure.
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Aug 13, 2011 21:04
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Holy poo poo, wonder what overspeeding does to that drivetrain?
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Aug 28, 2011 09:52
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I have a brakes question, since they seem to be flavour of the month here: My discs are warped, but as they' re only a few months old I'm reluctant to replace them. No one around here skims discs anymore, is there anything I can do in normal driving to remedy the vibration? Is the warping harming my breaking power significantly?
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Sep 12, 2011 06:11
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Thanks for that, I didn't follow any bed in procedure when they were replaced like 6 months ago but the vibration only showed up after I e-stopped for an accident. I'll try to find this mythical straight road I can 1-60-1 repeatedly on without causing an accident.
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Sep 12, 2011 07:25
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Massive diesel volvo wagon, 15-60-15 might take a bit more distance than you think. Also, all our big supermarkets are 24hrs & the police might arrest me for 'cruising-
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Sep 12, 2011 08:37
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Judging by this only occurring after an e-stop followed by remaining stationary on the brakes, I'm hoping I've just laid pad material onto the discs.
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Sep 12, 2011 16:55
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Those pictures would qualify as 'break pads' to me
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Sep 15, 2011 21:19
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Maker Of Shoes posted:Is there a proper way to clean that poo poo off short of blasting it with brake cleaner? I generally just give it a good wipe down and know it's going to smoke for a few miles. Is there a better way to clean your brakes than brake cleaner? Possibly, but why not use brake cleaner?
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Sep 17, 2011 19:09
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I've never used Brake cleaner, I can't remember off the top of my head what I used last time, probably whatever solvent I had lying around.
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Sep 17, 2011 21:52
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Let me be the first to say Holy loving poo poo!
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Sep 26, 2011 21:23
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nitrogen posted:In probably is, but drat. This. I want this to be true more than anything I've ever read, but the loads on the robot catching an engine block thrown 100 feet are far beyond what that catcher would be rated for. It would overload without doubt, possibly even break mechanical fuses.
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Oct 4, 2011 20:50
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Boat posted:That and specifically mentioning an overhand throw. Overhand is great for speed, but is going to put way more stress on the throwing and catching bot than an underhand lob. Also much more difficult telemetry... Also, there is no telemetry, it's ballistics. I've trained auto-palletisers & it's a right dick to accurately place something at teach speed, the mathematics required to program any throw or catch movements would be beyond the controllers for sure. Timing the catch to a thrown engine block would be hilarious to watch from behind armour because if the first catch wasn't perfect the robot would be shrapnel.
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Oct 4, 2011 22:13
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Lowclock posted:I don't think we really need to analyze the physics behind some stupid fake news article, do we? It's just meant to make you laugh, and it even fails at that. I can't help but analyze the physics behind it, it's a compulsion.
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Oct 5, 2011 07:37
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slidebite posted:It's also almost certainly not a belt coming out of a furnace, but a chain conveyor of some sort. I'll admit I did pay a little more attention than normal to our Kawasakis today...
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Oct 6, 2011 21:55
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Those jacks are also good for making a height-adjustable table/workbench.
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Nov 1, 2011 15:16
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Poing posted:That doesn't look like damage, look at the line between the (assumedly plastic) side sill and the door and it's perfectly straight. I think the red circle was to highlight the fact that Audi jacks go around the pinch weld under the unibody. I've beaten the poo poo out of the caliper retaining pin on one of my single-casting 4-pot brake calipers while it was on the one-legger (yeah I'm not dumb enough to have anything under the car while doing so) and it was just fine. Most cars I've had support the sill in this fashion, its a pretty strong area if designed for a jacking point.
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Nov 2, 2011 08:48
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