CAD CAM EDM DRO - Yahoo Group Archive

Re: More on servo motor selection

on 2001-09-10 20:26:11 UTC
Drew,

I think you are confusing something here. Gearing cannot change
power, only the mix of torque and speed.

Your motor is 60 in-oz at 2600 RPM, or 115 Watts. If you used 10:1
reduction you would have 600 in-oz at 260 RPM, which is still 115
Watts.

Mariss

> Hi all,
>
> I did some more thinking about what I expect from the little CNC
mill
> I'd like to play with and I think that a .100" deep full width cut
with
> a .500" dia. endmill at 30 ipm seems to be a resonable max. That cut
> removes .1 x .5 x 30 = 1.5 cu. in. of material per minute. At Jon's
> suggested rate of 3 cu. in. per hp for aluminum I need .5 hp to
sustain
> the above rate. 1 hp = 746 watts so I need 373 watts. So given
Mariss'
> calculation that, what seems to be the better motor I mentioned
earlier
> (see message #30095), can generate 60 oz. in @ 2600 rpm which equals
> about 115 watts, I need at least a 3 to 1 reduction between the
motor
> and the table. The table I'm using has a 10 pitch leadscrew so is
this
> more than enough to cover the required reduction. In other words,
does
> the leadscrew turn the 115 watts of the motor into 1150 watts? If I
> do add say a 2 to 1 reduction between the motor and the leadscrew do
> I now have over 3000 watts? With a 2 to 1 reduction @ 2600 rpm I can
> still run the table at 130 ipm which seems plenty to me right now.
>
> So how does all this sound? Am I way off in left field confusing
electrical
> hp with mechanical hp?
>
> Jon E., could you explain the process of computing the forces at the
> table for computing the
> Drew Rogge
> drew@p...

Discussion Thread

Drew Rogge 2001-09-10 19:29:44 UTC More on servo motor selection drew@p... 2001-09-10 19:35:25 UTC Re: More on servo motor selection ym_wong@p... 2001-09-10 20:07:22 UTC Re: More on servo motor selection mariss92705@y... 2001-09-10 20:26:11 UTC Re: More on servo motor selection ym_wong@p... 2001-09-10 20:27:06 UTC Re: More on servo motor selection Weyland 2001-09-10 21:11:16 UTC Re: [CAD_CAM_EDM_DRO] Re: More on servo motor selection ym_wong@p... 2001-09-10 21:37:01 UTC Re: More on servo motor selection Jon Elson 2001-09-10 22:43:51 UTC Re: [CAD_CAM_EDM_DRO] More on servo motor selection Jon Elson 2001-09-10 22:46:13 UTC Re: [CAD_CAM_EDM_DRO] Re: More on servo motor selection Drew Rogge 2001-09-11 09:06:35 UTC Re: [CAD_CAM_EDM_DRO] More on servo motor selection Drew Rogge 2001-09-11 09:09:35 UTC Re: [CAD_CAM_EDM_DRO] Re: More on servo motor selection Drew Rogge 2001-09-11 09:15:41 UTC Re: [CAD_CAM_EDM_DRO] Re: More on servo motor selection Peter Seddon 2001-09-11 10:08:51 UTC Re: [CAD_CAM_EDM_DRO] More on servo motor selection info.host@b... 2001-09-11 11:12:48 UTC Re: [CAD_CAM_EDM_DRO] Re: More on servo motor selection Drew Rogge 2001-09-11 12:30:41 UTC Re: [CAD_CAM_EDM_DRO] Re: More on servo motor selection Peter Seddon 2001-09-11 13:03:27 UTC Re: [CAD_CAM_EDM_DRO] More on servo motor selection info.host@b... 2001-09-11 13:54:12 UTC Re: [CAD_CAM_EDM_DRO] Re: More on servo motor selection info.host@b... 2001-09-11 14:46:26 UTC Re: [CAD_CAM_EDM_DRO] More on servo motor selection Drew Rogge 2001-09-11 15:18:06 UTC Re: [CAD_CAM_EDM_DRO] More on servo motor selection shymu@b... 2001-09-11 15:27:21 UTC Re: More on servo motor selection Jon Elson 2001-09-11 21:10:42 UTC Re: [CAD_CAM_EDM_DRO] More on servo motor selection Peter Seddon 2001-09-12 03:29:44 UTC Re: [CAD_CAM_EDM_DRO] More on servo motor selection currinh@O... 2001-09-13 20:17:41 UTC Flexible Tracks Sven Peter 2001-09-14 07:40:04 UTC Re: [CAD_CAM_EDM_DRO] Flexible Tracks Jon Elson 2001-09-14 11:54:20 UTC Re: [CAD_CAM_EDM_DRO] Flexible Tracks Sven Peter 2001-09-14 15:19:26 UTC Re: [CAD_CAM_EDM_DRO] Flexible Tracks