2013/9/6 Gregg Eshelman
> On Thu, 9/5/13, Sven Wesley wrote:
>
> ...
> gantry weight around 80-90 kg and is driven by small Nidec
> servos rated at 80 V (really small).
>
>
> That's not even 200 pounds. The table on this mill is 10x50" - 25.4x127
> centimeters, 4" - 10cm at its th
On Thu, 9/5/13, Sven Wesley wrote:
I don't know what your machine looks like, but I think many
people believe
they need much larger servos than actually needed. My steel
router has a
gantry weight around 80-90 kg and is driven by small Nidec
servos rated at 80 V (really small).
On Thu, 2013-09-05 at 20:19 -0400, Kerry Lynn wrote:
> On 9/5/13 7:07 AM, Gregg Eshelman wrote:
> > On Thu, 9/5/13, andy pugh wrote:
> >
> > Subject: Re: [Emc-users] Servo motor watts VS torque?
> > To: "Enhanced Machine Controller (EMC)"
> >
On 9/5/13 7:07 AM, Gregg Eshelman wrote:
> On Thu, 9/5/13, andy pugh wrote:
>
> Subject: Re: [Emc-users] Servo motor watts VS torque?
> To: "Enhanced Machine Controller (EMC)"
> Date: Thursday, September 5, 2013, 3:19 AM
>
> On 5 September 2013 05:40
> Anyway, you can compute the linear force a ballscrew can exert from
> some given motor torque, and then compute how much acceleration in
> G's that will give. That is a good exercise, rather than talking about
> motor Watts.
>
> Jon
>
>
...which you can do with my calc sheet posted earlier. :)
Gregg Eshelman wrote:
>
> What I'm looking for is for each type of motor (AC and BLDC) is "You want at
> least x watts and n amps to at least be in the same range as the old motor."
> On cncdrives.com I noticed the torque values listed are different for AC and
> DC motors of the same watts.
>
>
2013/9/5 Gregg Eshelman
> On Thu, 9/5/13, andy pugh wrote:
>
> Subject: Re: [Emc-users] Servo motor watts VS torque?
> To: "Enhanced Machine Controller (EMC)"
> Date: Thursday, September 5, 2013, 3:19 AM
>
> On 5 September 2013 05:40, Gregg
> Eshelman
On Thu, 9/5/13, andy pugh wrote:
Subject: Re: [Emc-users] Servo motor watts VS torque?
To: "Enhanced Machine Controller (EMC)"
Date: Thursday, September 5, 2013, 3:19 AM
On 5 September 2013 05:40, Gregg
Eshelman
wrote:
> The old motors were 5.8 amp cont, 30 amp peak. Stal
On 5 September 2013 05:40, Gregg Eshelman wrote:
> The old motors were 5.8 amp cont, 30 amp peak. Stall torque 3NM cont. Max RPM
> 2400. Max voltage 140 DC
140V * 30A = 4200W
140V * 5.8A = 800W
3Nm * 2400 rpm = 750W
You probably want at least 750W motors, geared to suit any difference
in nominal
wrote:
> On Wed, 9/4/13, Jack Coats wrote:
>
> Subject: Re: [Emc-users] Servo motor watts VS torque?
> To: "Enhanced Machine Controller (EMC)"
> Date: Wednesday, September 4, 2013, 8:18 PM
>
> >From what I have been told, the
> Amps is the 'po
On Wed, 9/4/13, Jack Coats wrote:
Subject: Re: [Emc-users] Servo motor watts VS torque?
To: "Enhanced Machine Controller (EMC)"
Date: Wednesday, September 4, 2013, 8:18 PM
>From what I have been told, the
Amps is the 'power', but more volts is the
'speed&#
>From what I have been told, the Amps is the 'power', but more volts is the
'speed' and responsiveness component.
Watts is Volts times Amps, and is defined as 'power'.
The 'torque' would be more the 'amps' than power, but obviously they are
related.
Does that help?
--
On 09/04/2013 06:25 PM, Gregg Eshelman wrote:
... snip
> That's why I'm concerned about the peak torque. The mill has a 10x50"
> table which is a large hunk of iron to push around and I don't want
> to end up with a real slowpoke of a machine. Ideally I'd like to have
> it performing quite a bit b
On Wed, 9/4/13, Sven Wesley wrote:
Subject: Re: [Emc-users] Servo motor watts VS torque?
To: "Enhanced Machine Controller (EMC)"
Date: Wednesday, September 4, 2013, 3:29 PM
2013/9/4 Gregg Eshelman
> ...
> This CNC parts business makes the worst of PC parts
vendors I&
On Wed, 9/4/13, Sven Wesley wrote:
Subject: Re: [Emc-users] Servo motor watts VS torque?
To: "Enhanced Machine Controller (EMC)"
Date: Wednesday, September 4, 2013, 3:29 PM
2013/9/4 Gregg Eshelman
> ...
> This CNC parts business makes the worst of PC parts
vendors I&
On 4 September 2013 20:36, Gregg Eshelman wrote:
> Since my "deal" on the Sanyo-Denki closed loop stepper motors and drivers is
> a bust*, I'm still hunting motors and drivers at an affordable price. (Which
> right now is as much under $1,000 as I can get.)
This guy (in South Korea) is listing
2013/9/4 Gregg Eshelman
> ...
> This CNC parts business makes the worst of PC parts vendors I've dealt
> with in 30 years look like the pinnacle of responsiveness to customers.
>
>
> Gregg, are you in EU?
I have bought a bunch of stuff from cncdrive.com. Balazs is very friendly
and service minded
On Wed, 9/4/13, andy pugh wrote:
Subject: Re: [Emc-users] Servo motor watts VS torque?
To: "Enhanced Machine Controller (EMC)"
Date: Wednesday, September 4, 2013, 1:57 PM
On 4 September 2013 20:36, Gregg
Eshelman
wrote:
> Since my "deal" on the Sanyo-Denki clos
Since my "deal" on the Sanyo-Denki closed loop stepper motors and drivers is a
bust*, I'm still hunting motors and drivers at an affordable price. (Which
right now is as much under $1,000 as I can get.)
After spending hours looking, it appears that nothing under a NEMA34 size is
going to do the
19 matches
Mail list logo
