Author Topic: Mill leadscrew extention  (Read 2909 times)

Offline John Rudd

  • Hero Member
  • *****
  • Posts: 2521
  • Country: gb
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?
eccentric millionaire financed by 'er indoors
Location:  Backworth Newcastle

Skype: chippiejnr

Offline Ed ke6bnl

  • Jr. Member
  • **
  • Posts: 25
  • Country: 00
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.
1950 Ford F1 streetrod
1968 ecotec powered Baja Bug kink coil overs
1953 Chevy AD ready for 4 cyl. cummins and nv4500

Offline doubleboost

  • Madmodder Committee
  • Hero Member
  • *****
  • Posts: 1619
  • Country: gb
  • Newcastle Upon Tyne
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

Offline John Rudd

  • Hero Member
  • *****
  • Posts: 2521
  • Country: gb
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?
eccentric millionaire financed by 'er indoors
Location:  Backworth Newcastle

Skype: chippiejnr

Offline Fergus OMore

  • Hero Member
  • *****
  • Posts: 1012
  • Country: england
Re: Mill leadscrew extention
« Reply #4 on: November 07, 2016, 05:19:19 PM »
You have a PM