Dilemma with ball screw and motor mounting

[luke11cnc]

Morning all

Now my ball screw has come I have found a problem and I’m sure I’m not the first

I would like to mount the ball screw to the under side of the supported rail for safety as I do have little fingers to worry about but if I have to mount to the side I will

The machined end that connects to the stepper motor is 15mm long after bearing mount is fixed, my aluminium is 45mm thick and then the stepper motor is fixed to it’s mount requires a extra 15mm to join to the coupler. So to start with I’m 30mm to short.

So as you see I need a extra 75mm

Now I have made my cnc an extra 100mm longer so the cutting front edge is not wasted by the gantry over hang

Length of bed is 1200+ 90 for the aluminium profile
Supported rails and ball screw is 1100mm long

To make up the extra length I was thinking of adding a extra bearing support with a 10mm rod 155mm long and connecting it with a extra coupler

I hope this makes sense and hopping the image I have attached improves my chances of sorting this problem out.




James and Luke