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Add the two pitch diameters and take half of that - which will be center distance
Example:
4DP 48 teeth and 4DP 96 teeth
Have 12.000 and 24.000" pitch dias.
12 plus 24 = 36
Half of 36 = 18.000 center distance (if straight cut)
Gets more complicated if helical
View attachment 279538
Do you need to add a wee bit of clearance?
I thought clearance was in the tooth form, and that using center distance is kind of a make-do.
Is that wrong?
Yes and no .... Thinning the teeth by cutting them deeper is perfectly acceptable, and it doesn't mess with the shape because all gear machines now generate the shape, and an involute curve is not picky.I thought clearance was in the tooth form, and that using center distance is kind of a make-do.
Is that wrong?
For those non-involute weirdo shapes you'll have to ask Zahnrad, he likes that ... stuff
Unfortunately, non-standard in the gear world seems to be kind of standard
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