Cool thanks . I built one of the Arduino rotary tables from one of the forums but never got it to work , pretty sure it had something to do with my stepper driver boards , same thing with the L'il MaxNC that I tried to convert over to Arduino using a CNC shield . I wanted to get setup to make graduated dials , but last I looked into it Grbl didn't support a 4th axis . Mach3 just looks like it's too complicated for me at this stage . I do have the 4 nema 24 steppers that came with the Max, so I know that they are up to the task .

thanks

animal

On 5/14/24 1:23 PM, John Lindo wrote:

Mike.

I have a mini Weiss 16AV mill that I fitted with Nema 23 steppers to the X Y Z and a homemade indexing?head that also has a Nema 23 that I use for the fourth A axis.

The mill can be used for simple power feed from a control box connected to push button feeds and rapid mounted on the mill,? also a different separate set of cables to the steppers by the way of 4 x quick release plugs and these feed into a control?box (drivers etc) that receives info from a CNC DDCSV ver 2.1 box.

Photo 1 CNC gear cutting.

Photo 2 The Red box, Power feed unit with DM 542 steppers and power supply boxes, the box underneath?

is the steppers and power supply for the CNC. Box boxes initially were originally tea storage boxes from a Chinese shop, the crystal glass was taken out and I replaced them with clear perspex.?

No room in the workshop bench areas, so I have to use the walls and ceiling for any available space.LOL.

Photos of power feed X Y Z operators controls.

Photo of a homemade Arduino step indexing control box, It has several setting commands, set Ratio, (currently I use 1:1) IE 45T stepper 45T indexer, but I can select? 90:1 45:10 all depends on the

project,? step Jog, Continual run, Angular moves per any full degree selected and a Division module.

A very useful piece of kit in the armoury. I have the .ino code also a complete "how to" build info file.

Hope all of you are interested.

John

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?

On Tue, 14 May 2024 at 20:25, mike allen via <animal=[email protected]> wrote:

Nice Job ! This is why we do things like this , to see if we can . I forget what is yer CNC machine ?

thanks

animal

On 5/14/24 10:51 AM, John Lindo wrote:

Hi Mike and members.
Finally got there with the gear cutting of the 9 T chuck pinions, I think LOL.
Only cut one so far, but entering the pinion into the alloy chuck scroll ring/gear, the pinion rotates without?
any jamming etc. The acid test will be to cut the other 2 pinion blanks and see if they all marry up.
To remove the arrow head created by cutting down a cone, indexer set at 20 degrees, the gear cutter running down the front?
portion of cone IE parallel to the X axis, cut 9 divisions, 40 degrees rotation, thus creating the arrow head effect between the teeth.
See the 12 line handwritten g code, basically I? tell the machine to do a function, in this case repeat 9 times.
This is a very useful code for simple gear cutting.
Then with the MPG, CNC, manual pulse generator, hand wheel, rotated the A axis +4 degrees, set A to home 0 degrees and then ran the programme again,?
then with the MPG set? to -8 degrees , again reset? A to 0 and ran the programme again.?
I could of consolidated basically 3 programmes into 1 but decided not to risk scrapping the phosphor bronze.
I agree that there will be so many armchair engineers who will disagree with this approach to making basically an old mangle type set of bevel gears,
and yes the 2 cutter approach as seen in your video you attached is the way to go if it was a crown wheel and pinion set for a Formula one drive train.
but this works for me and I am confident that the next 2 pinions to be cut if I follow what I just did on the first one then I should be home and dry.?
see attachments.