Help with drill-Mill conversion

[Ross77]

Ok worked out how to attach photos, sorry Lee if it isnt the prefered way with the media centre.
here is the pillar drill with x axis attached

I plan to cut down the upright once i know the height needed


The rails are 22mm and have a solid brushing on one side and a skate bearing set up on the other side


This is the the y axis,once its cut down, with the 3mm lead screws


This is the drive from the machine but it only has a half drive nut and not enough travel, any one know if you can get a acme nut for a 16mm dia. with 4mm pitch?


And the biggest problem is the quill. The bearings are shot so I plan to get new taper bearings anyway. I have a couple of ideas to mount a collet chuck.

1. get a 2no. taper ER25 collet chuck and dowel/glue it to the quill through the knock out hole(if thats what it is called)

2. use a 20mm straight shank collet chuck to got through the bearings and then cut and turn down the qull to preload the bearings and secure the collet, leaving the spline section to function

3. the most favourable, but hardest to acheive, is to use an ER 25 morse taper collet and drill down the centre of the quill to fit a drawbar. not sure if this will leave enougth strength in the quill.

Any way I had better stop now before you all fall asleep:heehee: