Posted by BillS on March 05, 2010 at 13:41:07:
In Reply to: Mikton 132 info posted by Robi on March 05, 2010 at 02:34:38:
Robi,
it looks like index constant is 16:1 based on your testing.
I looked in the FAQ and there is a feed constant of 0.009843 for a Mikron with 16:1 index.
If you want to test these constants on a helical setup just let me know and I'll provide it for you. Just need your gear specs.
A dead center tailstock would serve you well, since rotation of work arbor is so slow. A little grease on it will make it last a good long while - and its sturdy and stiff.
Normally a gear shop will try to have a complete change gear inventory, say 30-100, to cover helical setups on a non-differential machine. But if you planning to cut spur only, you might find a chart of change gears which leaves out many sizes. This seems to be the typical inventory supplied with a new machine. Off hand, I don't have one but some one else might.