any 700...1000+ oz.in. [err, 400..600 oz/in should be enough] servos available
do you know any source for 700..1000+ oz.in. servos w. decoders suitable for Gecko usage? For affordable prices
I look something for my 1000W spindle Sieg Super X3 mill... Should be suitable torque range? Or sounds more like overkill torque rating?
Last edited by ints99; 09-01-2005 at 03:31 AM.
Originally Posted by ints99
Hello! I'm not sure what is appropriate for your mill. Check the classifieds here at the site and see my add for the E-712 ElectroCraft 1500 oz-in servos. All of the specs are there: look and see. These are 300 oz-in continuous and peak at 1500 oz-in at 45 amps. If you derated the supply to only supply 20 amps (to math the Gecko's maximum output) you would still be able to pull 600-700 oz-in peak.
Given that you need to speed reduce a servos speed by a factor of three or four, you are automatically boosting the torque at the screw by the same factor. In other words a 150 oz-in continuous rated servo with a 3:1 reduction is going to give you 450 oz-in of torque to the lead screw. and the screw gives even more torque multiplication itself.
Sorry, it looks like I littlebit overshoot the specs
I think, as 600 oz.in. holding torque steppers-direct drive should be considered to be suitable referring to Industrial Hobbies kit, but i liked probably more servo setup, I need 1200 oz.in. max torque at 1000 rmp by servos, counted on leadscrew side. This means, if I will use 3:1 reduction (would it be wise amount?), something about 400 oz.in. 3000 rmp servo should be suitable... Probably?
As 2000 rmp servo seems to be more realistic/common, probably i must still calculate with 2:1 reduction, and 600 oz.in 2000 rmp motor?
The Z axis of course of Super X3 is missing gas strut (and any other counterweight) and even 2:1 (or close, don`t have had time to count the teeths on gear jet) reducted manual rotating despite of careful cleaning/lubricating etc. of the axis is very hard/heavy.
Last edited by ints99; 09-01-2005 at 03:32 AM.