re: mill threading (errata)
Posted by
ballendo@y...
on 2000-11-14 20:06:13 UTC
Oops!
The sherline rotary table is 14400 (not 1440) when driven full step
(200 SPR motor) or 28800 in half step mode.
So the equation changes to: 14400/8000= 1.8 (not .18)
or: 28800/8000=3.6 inches rise/fall per .100 across screen for 10 TPI.
The second part of my answer stays the same. (since the S/W will be
set to 14400 or 28800 per inch.
Sorry for the mistake.
Ballendo
The sherline rotary table is 14400 (not 1440) when driven full step
(200 SPR motor) or 28800 in half step mode.
So the equation changes to: 14400/8000= 1.8 (not .18)
or: 28800/8000=3.6 inches rise/fall per .100 across screen for 10 TPI.
The second part of my answer stays the same. (since the S/W will be
set to 14400 or 28800 per inch.
Sorry for the mistake.
Ballendo