Model Engine Maker
Supporting => My Workshop => Topic started by: Dan Rowe on September 30, 2015, 04:18:39 PM
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I bought a new Servo drill a few years back and I really like it for small holes which is what I mostly drill. I was checking the used prices on ebay which I do from time to time and spotted a 3 axis base that is no longer made with no drill head. It arrived yesterday and it is a small beast. It is a very robust cast iron base with large dials. The same column I had with the drill worked for the new base.
My plan is to make a mount for my Sherline head so I can use it for milling also.
(http://i586.photobucket.com/albums/ss307/shayloco/MEM/servo%20new%20base_zpsvwriri9d.jpg) (http://s586.photobucket.com/user/shayloco/media/MEM/servo%20new%20base_zpsvwriri9d.jpg.html)
Here is the link for the machine on UK.lathes:
http://www.lathes.co.uk/servo/
The new drill heads do not have the light which is no big deal, but I have a two step pully and the variable speed control
One happy camper.....
Dan
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Wow!! What does that base weigh Dan? Talk about robust!!! Love the precision of the dials as well...really nice find on ebay.
Bill
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Sweet Dan! Do the dials have verniers on them?
Dave
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Bill, The gent I bought it from said it weigh 110 pounds and I can believe that it was all I could to to get it on the bench and I am now thinking I need a stouter bench especially if I am using it to mill with the Sherline head.
Dave, you made me look and no vernier but the distance between the 0.001" lines is nearly 1/8" so I can work to 0.0005" with reasonable accuracy.
Not that it really needs it but I am stripping it down to check and clean and I am really impressed with the construction. I will post some photos of the parts soon.
Dan
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The ultimate mini mill; nice!
Dave
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Oh that is sweeeeet, does the dial gauge for the Drill axis feed give you the precision depth? I see it,s built into the unit.
Don
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Here is the base partly disassembled. The gibs are about 3/16" thick with nice pockets milled for the adjustment screws and the lock. The x and y axis have cast in oil passage ways, for some unknown reason the z axis does not have any oilers. The screw nuts are generous in size but no backlash provision was fitted. The base has tapped holes for bolting it to a bench.
(http://i586.photobucket.com/albums/ss307/shayloco/MEM/servo%20base%20parts_zpsmlaxvbtd.jpg) (http://s586.photobucket.com/user/shayloco/media/MEM/servo%20base%20parts_zpsmlaxvbtd.jpg.html)
The Servo drill head has a dial indicator that reads 0.001" and there is a dial that indicates .1" to keep track of that digit. The small dial in the front is the depth stop and it has a resettable 0.001" dial and can be set to stop the quill anywhere along the 1.5" quill travel. This makes blind holes an easy task.
(http://i586.photobucket.com/albums/ss307/shayloco/MEM/servo%20head%20close_zps07kt8gdm.jpg) (http://s586.photobucket.com/user/shayloco/media/MEM/servo%20head%20close_zps07kt8gdm.jpg.html)
I just thought of a problem.... the chuck only goes to 1/8" and I can not find an edge finder that small. The only way I can think to find an edge is with rolling papers or a feeler gauge with a known diameter pin in the chuck. Anyone have any better ideas on how to find an edge with only 1/8" chuck capacity?
Dan
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I just thought of a problem.... the chuck only goes to 1/8" and I can not find an edge finder that small. The only way I can think to find an edge is with rolling papers or a feeler gauge with a known diameter pin in the chuck. Anyone have any better ideas on how to find an edge with only 1/8" chuck capacity?
Mount a tiny ball-bearing on the end of a 1/8" shaft. Not as accurate as a conventional edge-finder but, depending on the precision required, perhaps good enough.