4th Axis options?

[m_c]

For something compact enough for a Novamill, you'll probably have to build something yourself.

It's worth looking at the SkyfireCNC options (If the info isn't on their website, I do have the PDF documents somewhere).
I also got as far as some sketches for a compact big bore 4th axis for my Triac, and my conclusion was a suitably adjustable worm and wheel was going to be the best compromise. Custom made also gave the option to mount the motor at a suitable angle, so as to minimise overall height of the unit (probably about 30 degs off horizontal, so the motor sticks out the front, but doesn't mean the axis has to sit higher to give clearance for the motor, or having the motor sticking straight up)

[phill05]

I drew up and made a 4th axis using a hollow shaft ER32 collet chuck had two backplates threaded to fit to use either a 3 jaw or 4 jaw chuck and it works great.



Phill

[Andrei]

I drew up and made a 4th axis using a hollow shaft ER32 collet chuck had two backplates threaded to fit to use either a 3 jaw or 4 jaw chuck and it works great.



Phill

Realy like ur build , wondering if u can help me with some code , i need to know how u read position and write position on lcd .
Thanks .

[phill05]

Description taken from S Ward's web site: http://www.worldofward.com/rotarycontroller/shop/.

The controller is intended to drive rotary table, lathe head indexer etc.
Allowing easy, error free division without the use of division plates.
As well as division the controller allows movement by angles (0.01 to 360 degrees),
continuous motion (for machining), positioning (jog mode) and a sophisticated
program mode which allows complex sequences of movements and events to be
executed.
Multiple controllers can be connected together to allow sophisticated machining
operations – e.g. automatic gear cutting, one controller dividing whilst the other
moves the cutter.
Input is via a 16 key keypad whilst a 4 line by 20 column LCD display provides
information in a user friendly format.

Features.
• Jog mode. Keys move CW/CCW in 0.01, 0.1, 1.0 and 10.0 degree steps.
• Division mode. Divide a circle into any number of divisions from 1 to 9999
inclusive.
• Degree mode. Any number of degrees from 0.01 to 359.99 in 0.01 degree
steps (note: actual accuracy depends on mechanics).
• Continuous drive. Table is driven continuously CW/CCW at one of the
(selectable) 5 speeds.
• Program mode. Allows complex sequences to be carried out. (Up to 10
programs can be stored)
• Configurable for any worm drive from 1:1 to 9999:1.
• Five speed settings.
• Configurable for all common stepper / driver combinations.
• Five machine profiles.
• Backlash compensation.

Phill