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| John Stevenson:
--- Quote from: Stuart on August 31, 2015, 07:28:50 AM ---Phil Could not John use his DRO on his mill to do a PDC with 63 holes or any factor of the same say 21 Stuart --- End quote --- 21 won't work. For one thing 21 is a standard hole sequence on dividing plate but the formulae is 40 / 63 which will not break down any lower. We needs answers off John but he's having a lie in. |
| chipenter:
Iff you mount the 63 gear to the indexing side then every 40 teeth drill a hole in the new plate will give you 63 . |
| lordedmond:
Thanks John Had a brain fade , goes to show when you have a divisionmaster you forget the basics and just punch in the numbers , just like a calculator Eg. Type all on one line into a calculator. 1 plus 1 divided by 2 you will get 1.5 not 1 as you expected Reason they use BMDAS put brackets around the 1plus1 and you get 1 as you should Moral do not trust them Stuart |
| Pete.:
--- Quote from: chipenter on August 31, 2015, 10:18:21 AM ---Iff you mount the 63 gear to the indexing side then every 40 teeth drill a hole in the new plate will give you 63 . --- End quote --- But if you mounted a 63 tooth to the indexing side then every 40 teeth cut a tooth in a blank you'd have a gear. |
| doubleboost:
Thanks for all the comments It would seem the 64 is no worse or better than a 63 As I am new to gear cutting I will have a go at cutting a 64 John |
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