I think that most people try to get too big a ballscrew into the X for retro-fits. Go for a far smaller option, and there should be enough space. If you use a manual lathe often, you'll be surprised at how little force is required to feed the X, even on heavy cuts, considering too, that it's a square/trapezoidal thread.
Regards Roland On 25 March 2011 12:41, andy pugh <[email protected]> wrote: > On 25 March 2011 10:26, John Thornton <[email protected]> wrote: > > One option and I'm still considering it for my Samson lathe is to build > > a small X Z table to clamp onto the ways for CNC work and be able to use > > the manual tooling for long work. > > CNC-converting the Z of a manual lathe is trivial (and if you put the > servo on the tailstock end, non intrusive). If you replace the > leadscrew with a ballsrew with a fast enough lead then the power feeds > will still work (assuming they are on a separate shaft). Alternatively > you could make the nut demountable and park it at one end.. I doubt > you would _ever_ thread cut manually so losing that option seems a > non-issue. > > I admit that motorizing the X is harder, and does rather assume that > you can find/make space for a ballnut. One option there is to mount a > ballnut off the back of the slide if there is not enough space under > the slide. (This wasn't an option for me as the milling column was in > the way). You can then put the thrust-bearings in a modified handwheel > housing, and probably a belt-drive for a servo too. > I used _some_ of these ideas on my lathe > ( > http://www.cnczone.com/forums/mini_lathe/63621-mini_lathe_cross_slide_ballscrew-2.html > ) as I was keen to retain manual use. > > I have never used it manually, as the lathe macros make CNC use so > much easier than manual use. > > -- > atp > "Torque wrenches are for the obedience of fools and the guidance of wise > men" > > > ------------------------------------------------------------------------------ > Enable your software for Intel(R) Active Management Technology to meet the > growing manageability and security demands of your customers. Businesses > are taking advantage of Intel(R) vPro (TM) technology - will your software > be a part of the solution? Download the Intel(R) Manageability Checker > today! http://p.sf.net/sfu/intel-dev2devmar > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Enable your software for Intel(R) Active Management Technology to meet the growing manageability and security demands of your customers. Businesses are taking advantage of Intel(R) vPro (TM) technology - will your software be a part of the solution? Download the Intel(R) Manageability Checker today! http://p.sf.net/sfu/intel-dev2devmar _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
