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Todays Project - What did you do today?

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Todays Project - What did you do today?
stevec Offline
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#761
01-20-2013, 12:36 PM
Great work Willie, you're gonna love it. I don't think I'd be able to lift my knee with a handwheel (unles it was huge) but (gloat, gloat)
My Tree 2UVR came with a power knee lift (Another reason I love my mill).
Here's a pic of the crank disengaged.
   

Here's one engaged by pushing in.
   
Here's one of the power feed engaged (knurled ring pulled out).
   
crank is disengaged
The drum switch handles the up-off-down control.
Busy Bee 12-36 lathe, Busy Bee Mill drill, Busy Bee 4x6 bandsaw, Homemade 9x17 bandsaw, Ad infinitum.
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DaveH Offline
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#762
01-20-2013, 05:09 PM
Willie,
I see you have been busy Popcorn Nicely done Smiley-signs107
Smiley-eatdrink004
DaveH
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sasquatch Offline
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#763
01-20-2013, 05:33 PM
Yup, older we get the more we get aching knees and creaking backs!!
sasquatch, proud to be a member of MetalworkingFun since Jul 2012.
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Highpower Offline
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#764
01-20-2013, 11:09 PM (This post was last modified: 01-21-2013, 01:54 PM by Highpower.)
Not fair Steve, you've got a real mill there! Drool Big Grin

Well, I knew things were going too smoothly and something was going to happen.

I went to button up the drive unit today and decided to try cranking the knee up and down by hand first before applying power to the feed. Going up a good distance using the hand wheel was a little awkward but do-able. I decided to leave the crank handle off of the hand wheel because I know I would only end up getting stabbed by it.

Then I tried cranking the knee down and after several turns on the wheel I heard a POP and noticed that a gap appeared between the drive housing and the dial ring. Uh oh..... So I took it all apart again to have a look. Sweat

All of a sudden now I can move the shaft in and out through the bearing housing on the knee and hear it going clunk, clunk. I put an indicator on it and found .0123" of end play in the shaft. 17428

[Image: th_Z_Shaft_End_Play.jpg]

At first I thought maybe the shaft had hung up in the bearing bore and the thrust collar didn't get seated against the bearing when I put it back together. I tried to tighten up the extension shaft to pull the jack shaft out further, but they didn't move. On closer examination I found the bearing was sliding back and forth in the housing! Too much clearance between the bearing spacer and the snap ring that retains them in the housing. Bash

[Image: Knee_shaft.jpg]

I guess I should have left that bearing rusted in place instead of cleaning and repacking it. Sigh....

Oh well. Added a shim under the bearing so that the snap ring is a tight fit against it now, and eliminated the end play in the shaft. Now I get to start all over again adjusting the drive gear backlash on the power feed - tomorrow. Slaphead
Willie
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stevec Offline
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#765
01-21-2013, 07:59 AM
Sounds like a long road Willie! Hang in there, we have faith in you.
Busy Bee 12-36 lathe, Busy Bee Mill drill, Busy Bee 4x6 bandsaw, Homemade 9x17 bandsaw, Ad infinitum.
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Mayhem Offline
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#766
01-21-2013, 08:04 AM
At least you are heading in the right direction Willie. Besides, it could be much worse...
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Highpower Offline
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#767
01-21-2013, 11:27 AM
(01-21-2013, 08:04 AM)Mayhem Wrote: Besides, it could be much worse...

You are absolutely right about that Darren. Smiley-eatdrink004

Cast iron and a sudden loud POP are two things that usually don't end well when they are together in my experience. For that matter, even a little 'tink' sound is not good either.
(All the welders in the group are cringing right now...) Rotfl

Believe me, I was expecting much worse when I heard it....
Jawdrop Jawdrop Jawdrop
Willie
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Highpower Offline
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#768
01-24-2013, 10:32 PM
Still need to attach the limit switch and the rail/stops on the knee/column, but at least it is on there and working. Smiley-dancenana

[Image: th_Z_Power_Feed.jpg]
Willie
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EdK Offline
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#769
01-25-2013, 06:51 AM
Nice job Willie. It looks better than factory installed. Thumbsup

Ed
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TomG Offline
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#770
01-25-2013, 07:22 AM
Nice job Willie, but what are you going to do for exercise now that you don't have to crank the knee up and down?

Tom
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