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:
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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
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.
