[Emc-developers] [OT] well, snap, my ISP has been autoblocked
Gentle persons: My ISP has just been autoblocked by sourceforge Reporting-MTA: dns; smtp02.lnh.mail.rcn.net Final-Recipient:rfc822;emc-us...@lists.sourceforge.net Action: failed Status: 5.0.0 (permanent failure) Remote-MTA: dns; [216.34.181.68] Diagnostic-Code: smtp; 5.1.0 - Unknown address error 550-'Your IP, 207.172.157.102 has been autoblocked because of abuse. Please emailpostmas...@sourceforge.net from another host if you believe this to be in error. This block will automatically be lifted shortly.' (delivery attempts: 0) Since I was already in the process of weaning myself from my ISP's email server for other reasons, including excessive spam and lack of good support tools, I've gone ahead and created this new gmail account. For the few who care, please adjust your address books. Regards, Kent -- Better than sec? Nothing is better than sec when it comes to monitoring Big Data applications. Try Boundary one-second resolution app monitoring today. Free. http://p.sf.net/sfu/Boundary-dev2dev___ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
Re: [Emc-developers] [OT] well, snap, my ISP has been autoblocked
Isn't a bummer when your isp won't control things. Charter has been the same way but I'm still surviving.so far. ;-) Dave On Tue, 10 Apr 2012 17:21:02 -0400 "Kent A. Reed" wrote: > Gentle persons: > > My ISP has just been autoblocked by sourceforge > > > > > Reporting-MTA: dns; smtp02.lnh.mail.rcn.net > > > > Final-Recipient:rfc822;emc-us...@lists.sourceforge.net > > Action: failed > > Status: 5.0.0 (permanent failure) > > Remote-MTA: dns; [216.34.181.68] > > Diagnostic-Code: smtp; 5.1.0 - Unknown address error 550-'Your IP, > > 207.172.157.102 has been autoblocked because of abuse. Please > > emailpostmas...@sourceforge.net from another host if you believe > > this to be in error. This block will automatically be lifted > > shortly.' (delivery attempts: 0) > > Since I was already in the process of weaning myself from my ISP's > email server for other reasons, including excessive spam and lack of > good support tools, I've gone ahead and created this new gmail > account. > > For the few who care, please adjust your address books. > > Regards, > Kent -- Better than sec? Nothing is better than sec when it comes to monitoring Big Data applications. Try Boundary one-second resolution app monitoring today. Free. http://p.sf.net/sfu/Boundary-dev2dev ___ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
Re: [Emc-developers] some regards for proxxon mf70 ?
hi, i think i would go with the mesa setup http://www.retrofit-plus.at/store/7i76-plug-n-go#tab-box-product-info To the 7i76 card i can connect the power supply, or ? I got a 30V/2A lab-power-supply, which i can use. Can i use just one power-supply for all 3 motors ? Can i run stepper or servos with the mesa 7i76 ? i mean, am i limited to stepper or servo motors with the mesa cards? You think servos are better than stepper motors ? What would be a good torque for small aluminium parts ? Are there other things to look for ? what do you mean with "ie both Pico and Mesa products move step signal generation and counters into hardware" ? do i need motors with some inner signal generation ? thanks alot for the help flo On Mon, 9 Apr 2012 15:08:51 -0700 Andy Pugh wrote: > > > On 9 Apr 2012, at 13:00, "Florian König" wrote: > > > The mesa card is used for pwm generation ? What do i need then for the > > servo/stepper power, which i control with the pwm signal, or? > > You will almost always need separate power electronics drivers, either > step/dir input stepper drives (also often called amps or amplifiers) for > stepper motors or analog input or step/dir input servo drives for DC/servo > motors. > > For a Proxxon machine I think that steppers are probably appropriate, though > if you can find some small servos and drives you could end up with a nice > setup. > > A simple solution would be the Mesa 5i25 and a Gecko G540 with suitable > stepper motors, but there are innumerable other options, many much cheaper. > -- > For Developers, A Lot Can Happen In A Second. > Boundary is the first to Know...and Tell You. > Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! > http://p.sf.net/sfu/Boundary-d2dvs2 > ___ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers -- -- Better than sec? Nothing is better than sec when it comes to monitoring Big Data applications. Try Boundary one-second resolution app monitoring today. Free. http://p.sf.net/sfu/Boundary-dev2dev ___ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
Re: [Emc-developers] some regards for proxxon mf70 ?
On 4/10/2012 3:20 PM, inflo wrote: > hi, > > i think i would go with the mesa setup > http://www.retrofit-plus.at/store/7i76-plug-n-go#tab-box-product-info > > To the 7i76 card i can connect the power supply, or ? > > I got a 30V/2A lab-power-supply, which i can use. Can i use just one > power-supply for all 3 motors ? > > > Can i run stepper or servos with the mesa 7i76 ? i mean, am i limited to > stepper or servo motors with the mesa cards? > > > You think servos are better than stepper motors ? > What would be a good torque for small aluminium parts ? Are there other > things to look for ? > > <...> > > flo > > Flo: Have you tried using one of the Internet search engines like Google, Yahoo, or Bing? When I enter "proxxon mf70" into the Google search line I get pages of hits related to your mill, including a number of stepper-motor conversions. I didn't notice any servo-motor conversions off hand, but I didn't look very hard. In any case, I'm definitely not the right guy to talk about servo systems. I don't know enough about the characteristics of the Proxxon mf70 mill to recommend a motor size, but I should think you could get some good ideas from the work described on these other sites turned up by Google. If I were forced to guess, here's how I would start: From the posted pictures, the mf70 looks relatively diminutive. These days, the somewhat more massive Taig tabletop mill in CNC form ships with NEMA frame size 23 stepper motors rated at 200 ozf-in (a bit more than 1.4 newton-meter) holding torque [some think that is already overkill. YMMV]. I'd be surprised if your mill requires motors this powerful. Sherline ships its mill in CNC form with NEMA frame size 23 stepper motors rated at 135 ozf-in (0.95 newton-meter). I'd think this is good enough for your mill, but you still need to do the homework. It's even possible the holding-torque requirement for your mill is low enough that the relatively smaller NEMA frame size 17 motors could be used. Good hunting! Regards, Kent PS - you may want to ask your questions on the emc-users list. The readers of that list represent a wide spectrum of machines and their usage. They are eager to help each other bring up new machines. -- Better than sec? Nothing is better than sec when it comes to monitoring Big Data applications. Try Boundary one-second resolution app monitoring today. Free. http://p.sf.net/sfu/Boundary-dev2dev ___ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
Re: [Emc-developers] some regards for proxxon mf70 ?
On 10 Apr 2012, at 12:20, inflo wrote: > To the 7i76 card i can connect the power supply, or ? No, the PSU connects to the stepper motor drives. (the 7i76 is optional, you could connect the drives direct to the 5i25, but the 7i76 adds protection, spindle control and extra GPIO. > > Can i use just one power-supply for all 3 motors ? Yes. But you still need stepper drives: This sort of thing. http://www.zappautomation.co.uk/dm422c-digital-driver-p-455.html > Can i run stepper or servos with the mesa 7i76 ? You would use a 7i77 for servo drives. > You think servos are better than stepper motors ? Yes, but a lot more expensive, and excessive for your Proxxon > what do you mean with "ie both Pico and Mesa products move step signal > generation and counters into hardware" ? do i need motors with some inner > signal generation ? No, the cards themselves generate the step pulses, at a frequency set by LinuxCNC, rather than the LinuxCNC commanding each step one at a time. -- Better than sec? Nothing is better than sec when it comes to monitoring Big Data applications. Try Boundary one-second resolution app monitoring today. Free. http://p.sf.net/sfu/Boundary-dev2dev ___ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
Re: [Emc-developers] some regards for proxxon mf70 ?
On Tue, 10 Apr 2012 21:41:51 -0400 "Kent A. Reed" wrote: > On 4/10/2012 3:20 PM, inflo wrote: > > hi, > > > > i think i would go with the mesa setup > > http://www.retrofit-plus.at/store/7i76-plug-n-go#tab-box-product-info > > > > To the 7i76 card i can connect the power supply, or ? > > > > I got a 30V/2A lab-power-supply, which i can use. Can i use just > > one power-supply for all 3 motors ? > > > > > > Can i run stepper or servos with the mesa 7i76 ? i mean, am i > > limited to stepper or servo motors with the mesa cards? > > > > > > You think servos are better than stepper motors ? > > What would be a good torque for small aluminium parts ? Are there > > other things to look for ? With steppers or servos you need to do the engineering to make certain the motors selected have adequate torque,etc. to move your axes at design velocities and with enough force to mill correctly. That is a small machine and relatively diminutive servos would do a great job but the cost will be more that a stepper setup. People get by with steppers all the time but the emc_lists would be rather quiet if everyone used servos just because they don't have the same problems with resonance, etc. One of the guys on the list had some cute 40 W Panasonic servos for sale a few years ago. Don't know if he still has any. They were $175 (drive and servo motor) at the time but I think the price has gone up. I think servos on a small mill would be a real kick but maybe not the best bang for the buck. Just a comment but Al seems to mill about 4X easier than steel. Dave > > > > <...> > > > > flo > > > > > Flo: > > Have you tried using one of the Internet search engines like Google, > Yahoo, or Bing? AFIK bing is just a ping combined with traceroute; really handy! > > When I enter "proxxon mf70" into the Google search line I get pages > of hits related to your mill, including a number of stepper-motor > conversions. I didn't notice any servo-motor conversions off hand, > but I didn't look very hard. In any case, I'm definitely not the > right guy to talk about servo systems. > > I don't know enough about the characteristics of the Proxxon mf70 > mill to recommend a motor size, but I should think you could get some > good ideas from the work described on these other sites turned up by > Google. > > If I were forced to guess, here's how I would start: > > From the posted pictures, the mf70 looks relatively diminutive. > > These days, the somewhat more massive Taig tabletop mill in CNC form > ships with NEMA frame size 23 stepper motors rated at 200 ozf-in (a > bit more than 1.4 newton-meter) holding torque [some think that is > already overkill. YMMV]. I'd be surprised if your mill requires > motors this powerful. > > Sherline ships its mill in CNC form with NEMA frame size 23 stepper > motors rated at 135 ozf-in (0.95 newton-meter). I'd think this is > good enough for your mill, but you still need to do the homework. > > It's even possible the holding-torque requirement for your mill is > low enough that the relatively smaller NEMA frame size 17 motors > could be used. > > Good hunting! > > Regards, > Kent > > > PS - you may want to ask your questions on the emc-users list. The > readers of that list represent a wide spectrum of machines and their > usage. They are eager to help each other bring up new machines. > > -- > Better than sec? Nothing is better than sec when it comes to > monitoring Big Data applications. Try Boundary one-second > resolution app monitoring today. Free. > http://p.sf.net/sfu/Boundary-dev2dev > ___ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers -- Better than sec? Nothing is better than sec when it comes to monitoring Big Data applications. Try Boundary one-second resolution app monitoring today. Free. http://p.sf.net/sfu/Boundary-dev2dev ___ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
