JP's shop

JP Machining · Jan 25, 2021

Well, crossed off one job I wasn't looking forward to this weekend. No one seems to tell you how much fun cleaning a water table out is when you're building it... went pretty well with an air hammer and getting underneath it. Definitely not waiting 4 years to do it again.

Scrap yard doesn't want the stuff as mix of steel and stainless so I guess it's off to the dump before too long.

Also removed the shelf from side of the table for the rotary as tired of reaching over it and have other ideas for rotary supports. Need to add a cable activated e-stop to the back of gantry so one doesn't get squished into rotary.

Perry Harrington · Jan 26, 2021

Looks like a slag pit at a foundry!

JP Machining · Dec 31, 2022

Well, must be time for an update. Lets see since last time I picked up a couple jib cranes and finally got them installed this last year. Why did I wait so long... One is set up to reach the Haas, Alpha lathe, Manual mill and almost reaches the turning center (used to have a 12' arm, but prevoius owner cut to 10' to swing in his shop, at some point I will build a new arm back to full length to reach that little extra). The other one cover the plasma table and all the way out the door which is really handy for loading things in the truck.

How it started: cranes are 1/2 ton so required a 4' cube of crete. Pretty much all hand dug, cept for by the door was able to use skid steer for the shallow parts.

Was a bunch of broken concrete by the door so decided to just replace that as well at same time.

JP Machining · Dec 31, 2022

Rear crane has an air hoist for gentle positioning, still need to run a proper air supply to it. Front one has a 2 speed electric hoist

Can see the vacuum sheet lifter I built on the plasma table. That thing has been a life saver, so much easier then man handling 5x10 sheets of 16-10ga steel, and really made it easy to load 22ga stainless with out bending or scratching.

JP Machining · Dec 31, 2022

The fab side of the shop slowed a bunch this year as main customer re-arranged some dealers. Hopefully will be starting back up soon in the new year on that job. Otherwise the machining side has been busier than ever before and keeps me pretty busy. Wish I could show some of the parts I've made but most are either really simple boring stuff or NDA stuff.

The big Alpha lathe has more than paid for itself already as one customer has me doing alot of larger stuff like 3" chrome moly pins with 6" dia heads on them- lots and lots of chips. I might be able to do those in the turning center but it only has a 8" chuck and damn thats alot of steel hanging out in there. The 3 jaw on the Alpha has a 6" through hole so it just swallows the chunks whole.

Other than that just trying to improve the every day little things to make life easier. Plan is to redo the bench in the office this next year with a bunch of drawer cabinets and maybe try and find an optical comparator to plop on top.

JP Machining · Dec 31, 2022

Oh, and the farm picked up a new 3 wheeler this fall. have a lot of little things to fix up on it and get the GPS wired in so I can spread some Lime this coming spring... Drove it home from about 35 miles away, went good but 25mph was smooth, 26 bounced you off the cab roof..

It has a remote hydraulic clutch pedal I need to rebuild or replace as it leaks and barely disengages but everything else seems to work good. V-8 Cummins in it, believe its a 504C or maybe a 555, haven't actually found the tag yet. Considering we basically paid for one used tire and got the rest for free its not too bad and will work good for what we want it to do. the 2 rear tires are pretty good yet, front one is a bit worn down but should work for a long time.

bryan_machine · Jan 1, 2023

So a jib crane like that is just "counter balanced" by the mass of the cement the base is bolted to?

JP Machining · Jan 1, 2023

Essentially yes. The cube is pinned into surrounding concrete as well. Can look here and see that larger cranes get pretty large bases under them.
Chart 2b about halfway down : https://www.lkgoodwin.com/more_info...fs300_baseplate_mounted_jib_crane_1_ton.shtml

Garwood · Jan 2, 2023

bryan_machine said:
So a jib crane like that is just "counter balanced" by the mass of the cement the base is bolted to?

Yes. Just like the traffic light posts that cantilever the arm out over the road 60 feet.

DrHook · Jan 6, 2023

Mine at work is just bolted to the 6" thick concrete floor, per the instructions...

bryan_machine · Jan 7, 2023

2T vs 1/2T, length of reach, size of base, would all affect that. Suggests that a key configuration decision is to get enough crane (weight, reach) but not too much (bigger install costs.)

Ox · Jan 7, 2023

bryan_machine said:
2T vs 1/2T, length of reach, size of base, would all affect that. Suggests that a key configuration decision is to get enough crane (weight, reach) but not too much (bigger install costs.)

Both are 1/2 ton.

The 2nd one appears to have a bigger D base plate tho.

----------------

Think Snow Eh!
Ox

david n · Jan 7, 2023

Ya'd think a nice solid floor(6+") would be pretty darn strong..............going JP's route............ that block is kinda isolated from the rest of the floor? He said it was pinned to the existing crete though...............if'n I ever git around to putting up another building, I'm gonna prep for a jib..........(prolly never install one though

) Can't put one in the current setup with the infloor heat.........

JP Machining · Jan 7, 2023

Yes, some of the smaller ones are "foundationless". Generally they have a larger base plate with more holes. I have seen pics of those that ripped the floor out and tipped over though so make sure the floor is as thick as you think it is and the anchors are aproved and full depth. The style I have has like 3' long anchor J bolts cast in place, would take alot to rip them out. There is also a style where you cast a mating tube in the large chunk of crete and then just slip the jib down inside. That gives smallest footprint but you need ht to be able to slide it down in.

If I ever do build a new shop, first it would be steel frame, second I would just have it specd from the start to handle a 5 ton or so overhead crane and maybe a couple small post mounted swing arms.

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