Author Topic: Mill leadscrew extention  (Read 536 times)

Online John Rudd

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Mill leadscrew extention
« on: November 07, 2016, 02:25:03 PM »
The X axis leadscrew on my new mill isnt long enough to accomodate the handwheel after adding the power feed....

Suggestions for extending the 16mm dia section by around 40mm?
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Offline Ed ke6bnl

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Re: Mill leadscrew extention
« Reply #1 on: November 07, 2016, 02:50:41 PM »
I machined a little off the spacer(not too much or the handle can hit the drive mechanism) and I machined a little off the handle and the threads just but up to the outside of the handle.
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Offline doubleboost

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Re: Mill leadscrew extention
« Reply #2 on: November 07, 2016, 03:10:56 PM »
Drill and tap a hole in the lead screw then locktight a extension piece in to it
John

Online John Rudd

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Re: Mill leadscrew extention
« Reply #3 on: November 07, 2016, 03:59:01 PM »
Following on from John's advice, how's this for an idea?

The leadscrew is already threaded M6 ( probably not big enough, could go to M10 ? ) so take a piece of bar greater than 16mm in dia, machine a 10 mm threaded stub, screw into existing hole.
Now, the brass bevel has a 1/8" keyway machined into it, I could then machine a similar size keyway in the extension piece to match.....then machine the o/d back to match the leadscrew.....

The thread section provides longitudinal support, while the keyway provides the torque.....

Sound good?
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Offline Fergus OMore

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Re: Mill leadscrew extention
« Reply #4 on: November 07, 2016, 05:19:19 PM »
You have a PM