RE: [CAD_CAM_EDM_DRO] Re: Servo survey.

I am using one of Dan's servo motors and it is working great. I would
suggest that a 1:1 drive ratio will not be successful unless you are driving
something small like a Sherline. I have it on a Shoptask 3 in 1 running at
3:1 reduction. I know Dan has them on a drill mill machine running 2:1. The
3:1 ratio with a 5 tpi screw limits your top speed to about 140 ipm at 24 v.
I know Dan was getting 180 ipm moves on his mill drill at 36 V.

Why do you want to direct drive the screws??

Tim
[Denver, CO]

> The servos are ones being sold by Dan (Camtronics). They are Clifton
> Precision C23-L55-W30 series. Published specs are: peak torque = 430
> oz.in., continuous torque = 50 oz.in., terminal resistance = 3.8
> ohms, peak current = 20 amp.
>
> They're advertised as 24V, however the data sheet shows them as 36V.
>
> I'm planning a 5/.2 ball screw and 1:1 drive.
>
> I was initially attracted to them because of the low cost and
> advertised high torque. However, not being well versed in the load
> profile for servos, I am now concerned seeing the torque curve max
> out at 200 oz.in.
>
> Any and all input is appreciated.
>
> Ron

> FAQ: http://www.ktmarketing.com/faq.html