Re: [CAD_CAM_EDM_DRO] Which rotary table to CNC? [adding to last message]

FWIW, 1:36 means 36 turns of the handwheel to get 1 rotation of the table.
For $150 more you can get the Sherline 4" rotary table with the NEMA 23
motor mount already installed.

Daniel J. Statman, Statman Designs
www.statmandesigns.com
dan.statman@...

----- Original Message -----
From: "Lloyd Leung" <lloyd@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, March 26, 2003 4:58 PM
Subject: [CAD_CAM_EDM_DRO] Which rotary table to CNC? [adding to last
message]


> I Just realized, looking from LMS, that these rotary tables are so cheap
> because they're 1:36. So ten turns of the hand wheel, I get 1 turn on the
> table. LMS and HF sell the same cheapie table.
>
> With 1:1 gearing, 0.72 degree/step five phase stepper motor, and a gecko
> G201. Max theoretical resolution would be: 5000 steps to gecko G201 -->
> 500 steps to motor --> 1 turn of the motor --> 1 turn of the hand
wheel -->
> 10 degrees of the table.
>
> Would this mean that I have 0.002 degree per step?
>
> I'm wondering is it a good idea to purchase one these? Or go for the 1:72
> gear ratio ones?
>
> Thanks.
>