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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.
Thanks

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John