Since i got problems posting at the old thread here:
I will continue our discussion in this thread here if nobody minds?
Cool ! Thanks for testing the code in reality and sharing your improvments ! I knew there must be some problem with it - there always is when u dont test the stuff . I hope its ok when I add your improvments in an update of the old code ?Turns out that while the Sept 7th code correctly calculated the circular tooth tickness and mirror angle, it wasn't compensating for the angular distance traveled by the involute from the base circle to the pitch circle. With this small change, the CNC machine is now cutting gears that both mesh & roll well.
If you dont mind and if u have time enough it would be great if you could post some pictures of the 'good' and the 'bad' gears you cutted out - would be interesting to see the difference ...
Probably there are more ways to skin a cat. There might be adavantages/disadvantages to each of the two construction methods. I think both of them provide a correct involute curve, you can provide clearance and shift profile with both methods when applied correctly. Maybe its easier using the cutting method to generate a trochoid root curve than to calculate - but i am not sure about this ? As far as i know it will also be easier to cut arbitrary (non-involute) tooth-forms with the cutting method than to calculate these. On the other hand the cutting process seems to be very cpu intensive.I think that creating an involute gear by cutting simulation is not the right solution.
Maybe it would be good to make kind of a script that takes a (half) tooth as parameter and in return constructs a gear from it like jonasthomas pointed out in some prior post ? That would make it possible to test and verify different constructions methods fast and easily ...
Sorry, this sentence i dont understand ? ^But instead of modifying the rack to cut a clearance in the gear, the uncut should be designed to other goals.
Can u explain what the notch-effect exactly is and how it could be minimized ?The tooth base should be designed to minimize the notch effect.