Category: CNC drill-mill machine V2

I finished a part of the Z-axis. Now I can mount it to the Y-axis. However it is not completely finished but I quit for today :p.

I made the power supply and mounted it in the case:

The capacitors in the previous update can handle max 40V. I didn’t think it was enough because the power supply delivers 36V. Therefore I bought 4 new capacitors of 4700µF 50V and mounted them on a pcb:

Build in and connected:

I’ve cut the back of an old pc power supply to close the back of the case. Now I have a power connector and fan to at once :).

I made some progress on the Z-axis. First I mounted the spindle on the stepper, then I mounted a junction box on the stepper and made a nut from plastic

I also mounted the inductive sensors:

Detail of the coupling between the spindle and the stepper:

The plate to mount a Dremel or equivalent on:

Today I mounted an aluminium plate to my Z-axis for the connection between the Z and X axis. Then I made some slide bearings for on the rails of the Y-axis. The slide bearings are mounted on the back on the aluminium plate.

The last couple of days I’ve been busy making a table for my cnc. I already mounted the Y-axis.

I have received another set of bearing holders (Thanks Jaak!!). Yesterday I mounted 2 off them at the Y-axis and I made another nut from plastic. I also made a bracket from some scrap rvs to mount the stepper. The coupling with the spindle is made from a piece of scrap brass with some bolts.

To protect the axis I’ve put some inductive end sensors on it, and on the back I’ve made a cable duct for the cables from the Z-axis.

(Clickable)

(Clickable)

I made another 2 stepper drivers:

Yesterday I made a new motherboard. The old 1 had a few design flaws in it. The new one is for 4 axis so I don’t need to build another one if a forth axis is added.

Circuit:

Pcb:

PCB layout

Partlist:

I designed the pcb for the stepper driver. It uses an L297 and L298 ic. The circuit I used:

(Clickable)

(Clickable)

Partlist:

I finished the Y-axis and made a bed from epoxy coated plywood.

I also reinforced the pillars.