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Pask Made
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Добавлен 16 май 2023
This is the second channel from me, Neil @Pask Makes. I created this channel for those of you who wanted to see a few of the other things that I am up to in my workshop. From woodworking to metalworking, and some of the behind the scenes aspect of creating, you will be able to find it here, on Pask Made… I hope you enjoy!
Broken Lathe - Fix with 3 Phase Motor and VFD Upgrade
Broken Lathe - Fix with 3 Phase Motor and VFD Upgrade
Просмотров: 75 928
Wish you could have showed the wiring of the vfd to the original controls as I’m about to do it to my lathe which is the same type as yours .
Try to program DC injection (DC Breaking) in to VFD. Lathe would stop in sec when you put it in neutral. Most VFDs these days have that option that can be activated and connection for breaking resistor.
pask tense
Dobra robota Też tak zrobiłem u siebie :)
Your lathe looks like it's of a perfectly good quality for the jobs you use it for. You tend to make small items that require a decent but not hyper accuracy and from all I've seen your lathe manages that absolutely fine.
I have this exact machine but Enco Model 12x36-411-0105. What does your coolant pump setup look like as these are not standard on mine. I would any ways to share your wiring diagram as I need to use a VFD for the the 3phase motor that is installed after the factory one crashed. Any help would be greatly appreciated.
The lift…😮
Motor sounds like the start capacitor. Some have a start / run capacitor, and others have 2 capacitors as one is start and the other is run. Yours has 2. Just a $15 part you can buy at any electrical supply place. it is a quick 5 min job to replace. Shifting anything heavy that has a strong flat base you use waterpipe. Your lathe you would lift and put 5 pieces under each end evenly spaced and just push it and as it comes off one piece you shift it around to the front and keep going.
I know I am way too late with this observation, but: would it not have been better to epoxy long nuts into the floor (flush or below) and then bolt the lathe in those? Also: use gloves when working with epoxy! You do NOT want that stuff on your skin.
If you’re turning a large diameter piece, I expect that the speed control would be useful. I made an adaptor plate for my lathe and although it came out fine, the speed never seemed to be quite right as I moved across the face.
I miss the scrap wood challenge theme song 😊
A tour of your workshops and grinding room please
The level of inconvenience to me of Pask having multiple channels is so low it can only be measured with a microscopic measuring tool he makes on his third channel: Pask Makes Microscopic Measuring Tools.
If you are in Southern California and are lusting after lathes and other precision machinery, Bal-Tec is condensing two huge shops into one, and is selling redundant machines. You can easily find their phone number on the Internet.
Looks like a precision matthews lathe at first. But they have great build quality so I was gonna be surprised if it was one of theirs. But it’s not. Thank you for putting content out like this!!
I have done this on my 12x40 lathe and my knee mill. Super upgrade. Turning threads is so much easier, I don’t even bother to use back gears any more. Given the cost of cheap Chinese Vfd s from Amazon prime it’s a much more affordable. The settings are a bit of a trick though. Each brand seems to use different programming. I had one defaulted to 400hz, which is exciting on a motor designed for 60! I needed to change this number in about 4 places in the settings before finally finding the right one that made a difference. The other adjustment was the low speed voltage adjustment. One brand worked fine out of the box, but the other had no torque at low speed and needed the low speed voltage bumped up. Too high and the motor growled at low speed, too low, no torque. Take plenty of notes, and remember that the motor may start unexpectedly if you do something silly.
Looking good, Paske! Did you add sand into the legs for deadening?
In my 50+ years of maintenance experience, I'd always, but always, sort out the hard to get at first, before doing the easy to get at. It just makes the job seem easier.
I don’t think you’re English is Englishing lol what are you trying to say?
@@dolphlundgren2820 Do the hard bit first. Do the easy bit last.
Maybe you thought about this already, but fishing tape would have made that shrink tubing chore much easier. Run the fishing tape through the tubing first, connect wires to it, then pull it through.
Great video, I need to do the same thing to my lathe.
7:45 Walk like the Egyptians
...and I'll see you on the next one
This is main channel worthy Pask!!!
Why are there no 3 phases in the workshop? Every German kitchen has 3 phases ...
Because not every utilities supplies 3 phase by default. And retrofitting 3 phase power and then rebalancing the single phase loads is more work than just adding a vfd
Three phase has benefits like lower draw and smoother cutting on sufficiently precise machinery. VFD are a wonderful addition giving speed control without fussing with belts on mills or lathes. I also have a rotary phase converter to drive my two industrial compressors which is especially useful because starting one then the other is far less load than a single motor of twice the HP. Building a simple large RPC would be a good video as they're quite simple and old motors are cheap. (I put mine on wheels and used SOOW cable and twistlocks for convenient shop reorganization and cleaning. My horizontal compressors also roll on large scaffolding castered dollies (tubing to mount them is cheap). This would be ideal for a renter who doesn't want to leave or wrassle their machines if they move. My vertical industrial receiver tank is fixed for convenience but was easy to hoist vertical by a lifting lug welded to the pipe plug on top. My lathe and mill are also mobile, the mill by pallet jack and by an attached outrigger dolly, the lathe by more casters. My shop air doesn't use piping. I use red hose and 3/4" Chicago couplings so I can rearrange and alter easily. I mounted simple hooks for the air hose so I can just lift it out as required. Almost everything I have is mobile including most of my shipping containers though my main shop is two welded side-by-side so a couple hours cutting would be needed to split them for relocation. (I'd just buy more one-trip grade containers but I own now and have no plans to move.)
some useful info in your post, nice one!
8:34 u gotta check your audio mixdown, this voiceover is hard panned to the left
Just remember, 3 phase motors running on a VFD have an interest characteristic. When operating below 50Hz the are “constant torque”, not “constant power”. This means that if you go from 50Hz to 25hz the speed will be cut in half, but so will the torque. Unlike gears, which are “constant power”. If you half the speed using gears the torque doubles. Once you get over 50Hz you are in “constant power” mode. If you go from 50Hz to 75hz the power will stay the same, but the torque will be cut in half.
Most likely the motor just needed a new start capacitor, or possibly the run cap was also bad, best to just replace both and it should be sorted, but always good to check the windings and centrifugal switch are also ok, as bad caps can burn out the windings and c.switch if you make too many start attempts. If the motor just hums like your's, an easy way to test if the start cap or run cap are bad is to switch it on and kick start the pulley (carefully) by hand. If the motor will then start and run at full speed, you know the run cap and c.switch are both ok.👍
Got the same lathe...10ys old still going stròng...sounds like the start capacitor.?..I put 5kw 3ph motor and vfd on my mill,made a huge difference.
Maybe it’s not in line with this channel, but I’d love just a general shop or project update. Covering items you’ve made, rebuilt, etc. and how they’re holding up.
Great video, Neil. It took me a while to realize that you have started a new channel. I love it but please, make sure you advertise it to others. All that you have shown here is valuable to some part of the audience and I hope more and more people will find the beauty in both "makes" and "made" Thank you!
Instead of heatshrink or tape i would use a tube
Funny I never thought about bolting my lather nor vertical mill to the floor. Now I wonder what I'm missing 🤔
I want to do this for my wood lathe, but it might require changing out the pulleys as the stock motor has a weird shaft.
Great upgrade.
What's the reason behind bolting the lathe to the floor and how do you level it?
So here's the original footage in reverse 😂 Brilliant 😂
Usually it's no big deal to go to double the motor rated frequency, so 50Hz motor should have no issues going to 100Hz. Also, I think you can increase your acceleration time a little - it seems ab it on the slow side. Usually 1S is pretty good - it seems more like 6 seconds currently - that's REALLY slow!
Thanks Pask
FYI @ 8:34 in, your right audio channel disappeared
That's a lot of work for a cheap start capacitor. definitely a good upgrade though.