Re: [Emc-users] Interesting motor construction

2019-03-22 Thread Gene Heskett
On Friday 22 March 2019 12:23:01 andy pugh wrote: > On Fri, 22 Mar 2019 at 15:27, Gene Heskett wrote: > > Translating that site into our native tongue might be a good > > starting point. > > https://translate.google.com/translate?sl=cs=en=https%3A%2F%2Ffor

Re: [Emc-users] Interesting motor construction

2019-03-22 Thread andy pugh
On Fri, 22 Mar 2019 at 15:27, Gene Heskett wrote: > Translating that site into our native tongue might be a good starting > point. https://translate.google.com/translate?sl=cs=en=https%3A%2F%2Fforum.strojirenstvi.cz%2Fviewtopic.php%3Ft%3D21057 -- atp "A motorcycle is a bicycle with a

Re: [Emc-users] Interesting motor construction

2019-03-22 Thread andy pugh
On Fri, 22 Mar 2019 at 16:04, Jon Elson wrote: > .01 degrees is 36,000 counts/rev. Large diameter encoders > (maybe with interpolation) can do more, but maybe that is > the raw resolution of the encoder without the interpolation. The encoder is described as a "Resolver" in the drive manual,

Re: [Emc-users] Interesting motor construction

2019-03-22 Thread Jon Elson
On 03/22/2019 10:25 AM, Gene Heskett wrote: I hope you got the driver for it with it. Dissecting that into a schematic might reveal some secrets. Likewise, I think I'd be looking for a way to get the encoders full resolution out of it as .01 degrees sounds a bit coarse. .01 degrees is 36,000

Re: [Emc-users] Interesting motor construction

2019-03-22 Thread Jon Elson
On 03/22/2019 07:39 AM, andy pugh wrote: A recent (ish) acquisition was an NSK Megatorque (RS1010, which means 10" dia and 10" long) This is rated at 147Nm (108 lb f) torque and for an axial load of 9500N (2100lbf) so is quite a beast. Currently I am using it as a glorified protractor to

Re: [Emc-users] Interesting motor construction

2019-03-22 Thread Gene Heskett
On Friday 22 March 2019 08:39:21 andy pugh wrote: > I have a servo motor acquisition problem, I tend to buy servo motors > from eBay just because they are cheap. > A recent (ish) acquisition was an NSK Megatorque (RS1010, which means > 10" dia and 10" long) > This is rated at 147Nm (108 lb f)

[Emc-users] Interesting motor construction

2019-03-22 Thread andy pugh
I have a servo motor acquisition problem, I tend to buy servo motors from eBay just because they are cheap. A recent (ish) acquisition was an NSK Megatorque (RS1010, which means 10" dia and 10" long) This is rated at 147Nm (108 lb f) torque and for an axial load of 9500N (2100lbf) so is quite a

[Emc-users] Interesting motor

2011-11-28 Thread andy pugh
Some of these seem to be just begging to be wrapped round a ball screw nut. http://www.thingapmotors.com/ -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. -- All the data

Re: [Emc-users] Interesting motor

2011-11-28 Thread Peter Blodow
This looks like a wound-up linear drive: high torque because of large radius, but high demand for precision mounting. Very interesting, also for other things than tools and machines (e.g., quick pointing telescope and dome drives). Not shown is the drive electronics - like in the used car ads,

Re: [Emc-users] Interesting motor

2011-11-28 Thread andy pugh
On 28 November 2011 16:06, Peter Blodow p.blo...@dreki.de wrote: Very interesting, also for other things than tools and machines (e.g., quick pointing telescope and dome drives). Not shown is the drive electronics - like in the used car ads, the item not mentioned mostly is the crutch. And

Re: [Emc-users] Interesting motor

2011-11-28 Thread Peter Blodow
I happen to have a disk motor here in my workshop museum that apparently uses the same principle, about 12 cm diam., very flat. It runs without electronics, so I supposed it had brushes inside. The rotor must be also etched from a disk of sheet copper, simply plane, rotating between two rings

Re: [Emc-users] Interesting motor

2011-11-28 Thread Peter C. Wallace
On Mon, 28 Nov 2011, Peter Blodow wrote: Date: Mon, 28 Nov 2011 18:15:17 +0100 From: Peter Blodow p.blo...@dreki.de Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Subject: Re: [Emc-users

Re: [Emc-users] Interesting motor

2011-11-28 Thread andy pugh
On 28 November 2011 16:32, andy pugh bodge...@gmail.com wrote: I suspect it just means that the current return is in the opposite direction, but through the adjacent, opposite polarity, magnet. But then, if you do that, do you need commutation at all? And the answer is, of course, because if

Re: [Emc-users] Interesting motor

2011-11-28 Thread Peter C. Wallace
On Mon, 28 Nov 2011, andy pugh wrote: Date: Mon, 28 Nov 2011 18:03:19 + From: andy pugh bodge...@gmail.com Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net Subject: Re: [Emc-users