Category: CNC drill-mill machine V2

CNC drill/mill machine V2 – Electronics Part – Update

This week I have build the drivers in to the case.

sturingen ingebouwd

 

I also finished the front panel.

frontplaat cnc

Frontplaat cnc sturing

 

The backpanel is almost finished.

achterkant cnc sturing

On the right there are 3 connectors for the steppers missing. I still need to order those.

CNC drill/mill machine V2 – Electronics Part – Update

I bought a Proxxon micromot for the milling motor. The micromot doesn’t has a speed control build in, so I build one myself based on some recycled parts.

schema

 

Pictures:

Proxxon regeling

Proxxon regeling

The Proxxon:

proxxon micromot

 

The clamp I made for it:

proxxon klem

 

A video of the x-axis working:

I’ve got the Y axis working to but with the Z axis there is something wrong with the stepper.

CNC drill/mill machine V2 – Mechanical Part – Update

I have had a new Z-axis construction made (Thanks Jaak!). This needed to be done because the old one had 2mm of play on it. The new Z-axis is based on a compact cylinder.

Drawing:

Z-as tekening
(Clickable)

 

Z-as tekening
(Clickable)

 

Nieuwe Z as

Nieuwe Z as

Nieuwe Z as

Nieuwe Z as

 

Video of the Z-axis working:

CNC drill/mill machine V2 – Electronics Part – Update

The relays I used as “emergency stop” relays had some trouble with burned and sticky contacts. I replaced it with a bigger 40A relays but that also got the same problems (probably because of the inrush currents). Then I decided to make a solid-state relays with 4 TIP2955 transistors.

 

The circuit:

Schema SSR

 

To drive this solid state relays and provide 12V for the fan in the back of the case I made a 12V power supply. On the cnc there will be led lighting, and that is also powered by this power supply.

 

Circuit:

Sturing

 

 

print

The traces on the underside of the ssr are reinforced with wire so it can handle more current.

onderkant

 

I also painted the top of the case.

Deksel

Deksel