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Setting Up My PM935 Mill
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12-30-2015, 03:53 PM
Every time I've heard of someone removing the knee they laid the mill on its side.
Logan 200, Index 40H Mill, Boyer-Shultz 612 Surface Grinder, HF 4x6 Bandsaw, a shear with no name, ...
the nobucks boutique etsy shop | the nobucks boutique 
12-30-2015, 04:12 PM
(12-30-2015, 02:48 PM)EdK Wrote: ... I got the turret removed and looked inside the body casting and saw the spider had taken a trip to the bottom of the casting. ... I'm sure you have a plan detailing how you will get the spider back up to the top and hold it there while you attach at least one bolt thru the turret. Just wondering ...
12-30-2015, 04:56 PM
12-30-2015, 06:00 PM
That looks like a two person job!
The spider on mine sat there when I lifted the ram to add a riser, which is still there due to laziness. But then again its stored where I can find it.
Free advice is worth exactly what you payed for it.
Greg 
12-30-2015, 06:56 PM
When I removed the knee from mine I was by my lonesome. I cranked the knee all the way up until the screw was just sitting on top of the bronze nut. (Still plenty of dovetail left to hold it in place.) Put a couple of lifting straps through it and hooked up to the cherry picker to take the weight off of the screw/nut. I removed the jib (didn't want to break it) and lifted the knee straight up off of the dovetails. Re-installed it in reverse order (again by myself). Just had to guide the knee into position with one hand and operate the cherry picker with the other.
Willie
Thanks given by: EdK
12-30-2015, 09:26 PM
I meant putting that spider back in Willie, can see me trying to hold that up through the opening and drop the bolts in from above.
Free advice is worth exactly what you payed for it.
Greg 
12-30-2015, 09:44 PM
12-31-2015, 12:15 AM
Well hells's bells Ed. That's three of ya, you should have no problem!!
Logan 200, Index 40H Mill, Boyer-Shultz 612 Surface Grinder, HF 4x6 Bandsaw, a shear with no name, ...
the nobucks boutique etsy shop | the nobucks boutique
12-31-2015, 09:39 AM
(12-30-2015, 06:56 PM)Highpower Wrote: When I removed the knee from mine I was by my lonesome. I cranked the knee all the way up until the screw was just sitting on top of the bronze nut. (Still plenty of dovetail left to hold it in place.) Put a couple of lifting straps through it and hooked up to the cherry picker to take the weight off of the screw/nut. I removed the jib (didn't want to break it) and lifted the knee straight up off of the dovetails. Re-installed it in reverse order (again by myself). Just had to guide the knee into position with one hand and operate the cherry picker with the other. Willie, So there's no mechanism to prevent cranking it all the way off of the screw by mistake? I think the Bridgeport mills have something to prevent that. At least that's what it sounded like based on some info My Google found for me. Ed
12-31-2015, 10:29 AM
On my mill there is a stop pin/bolt on the column that keeps the knee from traveling too high when it's in place. But after the pin is removed the knee will crank farther up until knee elevation screw comes out of the nut.
But you're right, a real Bridgy is probably different so I'll shut up now.
Willie
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