CNC Mk2
This page shows the upgrades/changes made on my CNC Mk1 design. Which are the following:
- The brass screw rods were replaced by timing belts.
- The linear guide system was changed to use some V-groove bearings running on the edge of aluminum profiles.
- The step motors have been replaced with some stronger step motors from an old photocopier I disassembled.
- The spindle is now moving along the X-axis and Z-axis. The mounting plate of the material is moving only on the Y-axis.
- I have designed my own control board and replaced the Arduino.
This aluminum profile serves both as mount plate for the step motor and the pulley on the other end, as well as the linear guide on which the v-groove bearings will be “traveling”. This design was used only on the Y-axis.
Here it is mounted on the frame. Note that the X-axis will now be on the “bridge” where the Z-axis was previously mounted.
This is the Y-axis carriage. This is where the material to be milled is mounted. So the material is traveling along the Y-axis and the spindle is traveling along the X-axis and Z-axis.
I did not follow the same design for the X-axis where the motor and pulley support was also the linear guide. This is just the step motor support here.
And this is the support of the pulley.
For the tracks for V-groove bearings I have now used these L shaped profiles, which are screwed on the horizontal square profile beams of the “bridge”
The Z-axis linear guide is now traveling along the X-axis on those tracks.
