[Emc-users] Wiring my Hurco KM3 - hope to avoid magic smoke.

Hello LCNC users hive mind; I am finally getting to the actual wiring stage of my LCNC retrofit of my 1987 HURCO KM3. The point of this message is to say what I have planned and if anyone notices that I’m heading for a cliff, a wall, a Magic smoke event you can yell at me now, or if anyone has

Re: [Emc-users] Leadscrew Efficiency?

On Thursday 18 August 2016 23:57:23 Todd Zuercher wrote: > But this is a BLDC servo and free wheels quite easily when powered > down. I put the .2" lead screws back on today and re-tuned with a > couple of new tricks and got much better results than I've had in the > past. > > The drives use

Re: [Emc-users] Leadscrew Efficiency?

But this is a BLDC servo and free wheels quite easily when powered down. I put the .2" lead screws back on today and re-tuned with a couple of new tricks and got much better results than I've had in the past. The drives use torque commands, and had been difficult for me to tune well and get

Re: [Emc-users] Clearpath Servo For Lathe Spindle?

On Thursday 18 August 2016 22:28:38 Martin Dobbins wrote: > >Agreed. And I have a saying when it appears that it will work, > > gopherit. I need to see if I can rewire this 1600 for parallel, > > which ought to speed it up considerably. But its 22mh per winding, > > so I don't expect miracles. >

Re: [Emc-users] snagged touch probe on eBay - anybody know how to interface ?

On 08/18/2016 01:57 PM, Florian Rist wrote: > Hi Jon > >> Thanks, not sure it corresponds. > Here is one that should fit: > > http://www.modmash.nnov.ru/prod/blumdl/umtc.pdf > > It explicitly covers the P03.5000-010-A2 (that's the type number of a > TC50 probe, second generation), BUT it is in

Re: [Emc-users] Clearpath Servo For Lathe Spindle?

>Agreed. And I have a saying when it appears that it will work, gopherit. >I need to see if I can rewire this 1600 for parallel, which ought to >speed it up considerably. But its 22mh per winding, so I don't expect >miracles. >And then tell us how it works when you've lived with it for 2 weeks.

Re: [Emc-users] A question on relays.

Gregg, take a look at the poster pdf from bosch http://br.bosch-automotive.com/media/parts/electrical_systems_accessories__auto_parts/relays_magnets__e_s_a/downloads_7/MKG3_Relaisposter_de_GZ.pdf and look at the terminal numbers then look at the DIN 72552

Re: [Emc-users] A question on relays.

Automotive relay ? On 19 August 2016 10:53:21 am AEST, Gregg Eshelman wrote: >Is there an industry standard designation for the contact arrangement >on the common 12 volt DC relay that has five spade lugs like this one? >https://www.amazon.com/dp/B0010ADJIE/ > >I want to find

Re: [Emc-users] A question on relays.

On Thursday 18 August 2016 20:53:21 Gregg Eshelman wrote: > Is there an industry standard designation for the contact arrangement > on the common 12 volt DC relay that has five spade lugs like this one? > https://www.amazon.com/dp/B0010ADJIE/ > > I want to find a 12 volt relay for that style

[Emc-users] A question on relays.

Is there an industry standard designation for the contact arrangement on the common 12 volt DC relay that has five spade lugs like this one? https://www.amazon.com/dp/B0010ADJIE/ I want to find a 12 volt relay for that style socket with the highest amp and heat rating available, but without

Re: [Emc-users] Profibus, parametrization frame

Some. Could you be more specific? Are you looking for the frame format or the slave specific contents? Did you read this: http://www.profibus.se/download/PDF/PB_SystemBesch_SE_1.0.pdf On 18 Aug 2016 at 20:31, Nicklas Karlsson wrote: > Does anybody here have any experince of the data in the

Re: [Emc-users] Clearpath Servo For Lathe Spindle?

On Thursday 18 August 2016 18:07:00 Martin Dobbins wrote: > >For threading, either with the g76 for internal/external threads, > >internals limited by the back off clearance your tool gives you > > without hitting the threads on the back side of the hole. And you > > want all the grunt you can

Re: [Emc-users] Clearpath Servo For Lathe Spindle?

>For threading, either with the g76 for internal/external threads, >internals limited by the back off clearance your tool gives you without >hitting the threads on the back side of the hole. And you want all the >grunt you can get, so the 1810oz probably is the best idea. .. >But for

Re: [Emc-users] Sale prices

On 18 August 2016 at 22:42, Gene Heskett wrote: > > Comments anybody? Someone in Aus has asked if I am willing to crate-up all the spare parts from the Holbrook. (rather more than you describe, I think, certainly more weight) and send it to him. He has offered to pay the

[Emc-users] Nother question about CSS

Greetings all; This piece of cast I am working on seems to be pretty hard on plain grey carbide inserts. Good working life seems to be about half an hour making sand on the table. Currently working at about 4" in diameter and 250 to 300 revs. 300 revs would (circumference=pi*d, or pi * 4 *

[Emc-users] Sale prices

Greetings all; I just excised the big screw, all the gears and gearboxes that drive it, the OEM apron and anything else that got in the way of putting the 2505x1450mm ball screw I just bought on it. This is something north of 100lbs of stuff. And I need it to find a new home as I hung it on

Re: [Emc-users] Leadscrew Efficiency?

On Thursday 18 August 2016 11:16:02 Todd Zuercher wrote: > They are both almost identical screws and nuts except for their leads. > They are both Kirk Motion VHD series LEAD screws. > http://www.haydonkerk.com/LinearActuatorProducts/LeadScrewsAndNuts/Nut >s/VHDSeriesNuts/tabid/148/Default.aspx >

Re: [Emc-users] snagged touch probe on eBay - anybody know how to interface ?

Hi Jon > Thanks, not sure it corresponds. Here is one that should fit: http://www.modmash.nnov.ru/prod/blumdl/umtc.pdf It explicitly covers the P03.5000-010-A2 (that's the type number of a TC50 probe, second generation), BUT it is in Russian. :-) See you Flo

[Emc-users] Profibus, parametrization frame

Does anybody here have any experince of the data in the parametrization frame for profibus? -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net

Re: [Emc-users] Leadscrew Efficiency?

A 10 TPI would require half the torque, but double the speed. I would expect a servo to have a reduction gear. If it had an exceptionally high reduction, it may not be able to produce sufficient torque at the higher RPM needed. But that doesn't sound like the case. Danny John Kasunich

Re: [Emc-users] Leadscrew Efficiency?

On Thursday 18 August 2016 10:14:53 Todd Zuercher wrote: > I have a machine that I converted from step-motors to servos, and I'm > having a little trouble with the Z axis. It has an anti backlash lead > screw with a 5tpi screw. This sort of worked, but the servo was > working hard to move the

Re: [Emc-users] Leadscrew Efficiency?

They are both almost identical screws and nuts except for their leads. They are both Kirk Motion VHD series LEAD screws. http://www.haydonkerk.com/LinearActuatorProducts/LeadScrewsAndNuts/Nuts/VHDSeriesNuts/tabid/148/Default.aspx So you are saying that all things being equal the turning force

Re: [Emc-users] Leadscrew Efficiency?

- Original Message - From: "Jim Craig" To: "Enhanced Machine Controller (EMC)" Sent: Thursday, August 18, 2016 10:37:02 AM Subject: Re: [Emc-users] Leadscrew Efficiency? On 8/18/2016 9:14 AM, Todd Zuercher wrote: > I have a

Re: [Emc-users] Leadscrew Efficiency?

Are they LEADscrews or BALLscrews? With ballscrews, the finer pitch screw should indeed provide a much better mechanical advantage. With leadscrews, the mechanical advantage almost doesn't matter, because friction is by far the dominant force. Somewhere between 60% and 95% of the torque

Re: [Emc-users] Leadscrew Efficiency?

On 8/18/2016 9:14 AM, Todd Zuercher wrote: > I have a machine that I converted from step-motors to servos, and I'm having > a little trouble with the Z axis. It has an anti backlash lead screw with a > 5tpi screw. This sort of worked, but the servo was working hard to move the > head, and I

[Emc-users] Leadscrew Efficiency?

I have a machine that I converted from step-motors to servos, and I'm having a little trouble with the Z axis. It has an anti backlash lead screw with a 5tpi screw. This sort of worked, but the servo was working hard to move the head, and I wanted a little higher encoder resolution for better

Re: [Emc-users] Clearpath Servo For Lathe Spindle?

On Thursday 18 August 2016 04:58:20 andy pugh wrote: > On 18 August 2016 at 04:37, Gene Heskett wrote: > > That flat line going to the left > > to zero speed, is the maximum steady torque over a longer period of > > time without overheating something. > > A typical

Re: [Emc-users] Clearpath Servo For Lathe Spindle?

On 18 August 2016 at 04:37, Gene Heskett wrote: > That flat line going to the left > to zero speed, is the maximum steady torque over a longer period of time > without overheating something. A typical threading operation probably doesn't count as "steady state" except on