Post By t.jones
My little job shop
This is well past over due.
I am kind of a lazy person, that is why I am such a good machinist I never get in a hurry So I know every one likes pictures but I don't want to take all the ones I would need to so here is a short video tour of my shop and the steel fab shop in the next unit.
my main amount of work is walk in, which is about what ever you can think up. I also specialize in the repair and fabrication of hydraulic cylinders and there systems. Its kinda nice to not have to do the same thing day in day out. The place is a mess i know, been busy as hell since the roads closed.
Now time for the show, enjoy!
Just wondering. How many work in there?
mostly just me, I have an older guy who comes in when I get really swamped. But most of the time he rebuilds and maintains over head cranes. The fab shop on the other side has 20+ people or so.
Originally Posted by 47nomad
What brand is that vertical / horizontal knee mill?
Nice shop. Quite a selection of lathes to choose from too.
Nice shop I want to see the pinion repair ---Trevor
Originally Posted by btm
I was wondering the same thing. I recently acquired one that was made by Yeong Chin (YCM) and branded as "Dynamic." It's a beast of a machine that is incredibly well designed and produced. I was wanting something that has both horizontal and vertical capabilities but still has a quill. After using it, I don't think I could ever go away from a 40-taper spindle.
Originally Posted by btm
The milling machine is a "trademark first" its made by Long chang machinery, its a 1981.
Originally Posted by ions82
Sadly I finished it during the day and they look down on me filming during the day.
Originally Posted by t.jones
But to give you an over view,
The bent shaft was cut off I then removed the old bearing, which the last guy was nice enough to hammer on over the gouge and slag from where he cut the last one off.... I chucked it up in my large lathe and faced it down to where the step off from the thread was located, I drilled and reamed a hole for a 3/8 dowel pin and pressed it and made sure it was true. Next I cut the spline off the donor part and machined it to length drilled and reamed the 3/8 hole as well as chauffeured it to the edge of the hole. I then pressed the spline onto the dowel pin. I welded it up with 7018 rods and machined it back down to the seal size that rides on it. As for the teeth this guy is a farmer and only wants to make work again, So I tig welded the missing bits back up and ground them by hand till I was as happy as I was going to get with the mesh.
I heard a wet beer burp at about 1:23.
Do ya do any lathe work??
Good to see you throw this thread up! I like what you've shown in Abom's thread.
I must apologize for not posting in a while, the 70hr weeks leave me little free time.
I had an odd little job come in the other day, a customer needed a short run of bushings made. sounds easy right? well there is a catch, they have to go on an existing shaft in a machine with out the shaft coming out of the machine. Once installed on the shaft they would ride on another bushing made of UHMW, from what I gather the guys are lazy and don't like to change out bushings a lot so once the UHMW is gone it just beats the steel one to death then they change it....
Here is the UHMW bushing they supplied,
So after some pondering and hair loss this is what I came up with, The bushing is held on with two roll pins one placed 90 deg from each other which will allow it to drive with the shaft it has also been heat treated to add life to it.
This is how it works,
now the fun begins, I cut the blank shafts a little long I then drilled the hole 0.187" under size and left the OD 0.187 over size I then put a bevel on both ends of the the part. Next I fabricated a jig to hold them in the saw to split them in half. I also marked each bushing in four spots with a number or letter so as each side would stick with its mate for the rest of the process.
Once they where split into two parts I clamped them into the lather as one and machined the inside Dia to the correct shaft size, I next fabricated a sort of mandrill device that could be held in the lathe chuck and hold both sides tight so I can machine the outside to be the correct OD as well as run true with the ID. I cupped out both ends so it would slide of the bevel and sandwich the part onto the shaft.
Once machined to size they where all faced down the correct length, next I need a hole in each end on both parts so the roll pin will go through hold them true, Some more hair loss and this happens.
I would drill the first hole in all the parts, after which I dialed everything back in and drilled a fresh started hole and indexed 90 deg to the next Sliding the bushing in and using a peace of drill rod through the first hole to keep it in place. After deburring all the parts time for Heat treatment. I have a small oven which runs off propane which could do about 12 at a time. Pictures are great but I managed to talk my co-worker into taking some video for everyone.
They are heated till bright red and quenched in a oil bath, hardens them up real nice and equal and I have not had anything crack yet.
Here are all the little buggers mated up and polished ready to be destroyed.
Originally Posted by JBoogie
Thats some nice work Emerald. Great way to make use of all that job shop machinery.
Well ladies and gentlemen time for our main attraction!!!!!
A nice little shaft from a cranberry cleaning machine from on of the local bogs. The manufacture said the pillow bearings should be greased every 8-10 hours of use due to the conditions which it is exposed to. This in reality means it might have got some once in the last year. so it started to make a nose then some more and more and then no more turning. As we can see it did make a nice grease grove in the shaft for later, I how ever thing its fine with out them
Here is a short video of facing and beveling the new shaft.
Cutting one of the three key ways.
I did not get a chance to get any pictures today of this but here is some Line Boring action. This was great fun with no power feed since the last guy who used it on site burnt out the board while welding around it and just put it back.....
One more little thing before I fall into a coma, Did a set of train wheels for a scale train that is used in a park.
Major OD is 9" Minor is 7.5" this is a .250 cut off Dia or .125 per side.