开云体育

Other Driver Solutions?

kirk fraser All Messages By This Member #99629 I've had bad luck with my MaxNC mill so I am looking for a different drive system. ?Ideally it would run small hydraulic motors which won't burn out in an overload like steppers. ?But I'm willing to consider a different stapper system that's cheaper than MaxNC's since I already replaced the driver board and several motors once. ?I once saw other systems in a magazine at a now dead machinist's but I don't remember them or the magazine name. ?Any leads? This forum used to be for builders who I hoped might consider mentoring me on the hydraulic solution, if any are still out there, please advise. .I should be able to hook up the chips to control a proportional hydrauliv valve to a Rspberry Pi but I don't know about the position sensors and software to run the G-codes, etc.. Thank you. Kirk Fraser
Jon Elson All Messages By This Member #99633 开云体育 On 07/09/2016 09:51 AM, maxnc15@... [CAD_CAM_EDM_DRO] wrote: I've had bad luck with my MaxNC mill so I am looking for a different drive system. ?Ideally it would run small hydraulic motors which won't burn out in an overload like steppers. HUH?? Stalling a stepper will not burn it out.? The current to a step motor is constant, set by the driver, and won't increase when stalled.? Now, totally crummy step drivers may blow transistors when the motor stalls, and that could then damage the motor with excess current.? You might try Gecko G251 drives for smaller motors or the G203 for larger ones that need more current.? They will greatly improve performance, too. Hydraulics were an insane, Rube Goldberg stopgap measure when electronics was in its infancy, and you will not find any commercial machines with hydraulically-actuated axes today.? Putting hydraulic motors on a desktop mill is one of the most insane ideas I've ever heard.? Do you know where to get proportional hydraulic valves?? They will run about $5000 new, PER AXIS, and you are not likely to find used ones, especially in the size you would need.? You are also not likely to find hydraulic motors designed for servo axis use in the size you want. Have you actually had a stepper burn out from an overload?? Or did you have a drive fail and ruin the stepper, and you assumed the stall was the cause?? (I will say the old MaxNC stepper drives were QUITE awful, RL-type drives.)? There are much better drives and controllers. Jon
kirk fraser All Messages By This Member #99635 Jon,? > Or did you have a drive fail and ruin the stepper, and you assumed the stall was the cause?? Assumed - all three motors do not respond - so it could be they work and the driver board only is bad. I will try Gecko, thanks. > Do you know where to get proportional hydraulic valves? ?They will run about $5000 new, PER AXIS, Yes I do know - Sterling which was bought by Parker sold two sizes for less than $200 each. ?The ones by Moog ran $3000 and another company I forget the name of was $5000 each. ?I bought some for a robot project but couldn't afford to finish yet, which is why I need the CNC to work. ? I also know many other things posted here. ?? ? Kirk ---In CAD_CAM_EDM_DRO@..., <elson@...> wrote : toggle quoted message Show quoted text On 07/09/2016 09:51 AM, maxnc15@... [CAD_CAM_EDM_DRO] wrote: I've had bad luck with my MaxNC mill so I am looking for a different drive system. ?Ideally it would run small hydraulic motors which won't burn out in an overload like steppers. HUH?? Stalling a stepper will not burn it out.? The current to a step motor is constant, set by the driver, and won't increase when stalled.? Now, totally crummy step drivers may blow transistors when the motor stalls, and that could then damage the motor with excess current.? You might try Gecko G251 drives for smaller motors or the G203 for larger ones that need more current.? They will greatly improve performance, too. Hydraulics were an insane, Rube Goldberg stopgap measure when electronics was in its infancy, and you will not find any commercial machines with hydraulically-actuated axes today.? Putting hydraulic motors on a desktop mill is one of the most insane ideas I've ever heard.? Do you know where to get proportional hydraulic valves?? They will run about $5000 new, PER AXIS, and you are not likely to find used ones, especially in the size you would need.? You are also not likely to find hydraulic motors designed for servo axis use in the size you want. Have you actually had a stepper burn out from an overload?? Or did you have a drive fail and ruin the stepper, and you assumed the stall was the cause?? (I will say the old MaxNC stepper drives were QUITE awful, RL-type drives.)? There are much better drives and controllers. Jon
Ron Thompson All Messages By This Member #99639 开云体育 Damn, I just took your ass off moderation! Back you go. On 7/9/2016 3:30 PM, maxnc15@... [CAD_CAM_EDM_DRO] wrote: ? Jon,? > Or did you have a drive fail and ruin the stepper, and you assumed the stall was the cause?? Assumed - all three motors do not respond - so it could be they work and the driver board only is bad. I will try Gecko, thanks. > Do you know where to get proportional hydraulic valves? ?They will run about $5000 new, PER AXIS, Yes I do know - Sterling which was bought by Parker sold two sizes for less than $200 each. ?The ones by Moog ran $3000 and another company I forget the name of was $5000 each. ?I bought some for a robot project but couldn't afford to finish yet, which is why I need the CNC to work. ? I also know many other things posted here. ?? ? Kirk ---In CAD_CAM_EDM_DRO@..., wrote : On 07/09/2016 09:51 AM, maxnc15@... [CAD_CAM_EDM_DRO] wrote: I've had bad luck with my MaxNC mill so I am looking for a different drive system. ?Ideally it would run small hydraulic motors which won't burn out in an overload like steppers. HUH?? Stalling a stepper will not burn it out.? The current to a step motor is constant, set by the driver, and won't increase when stalled.? Now, totally crummy step drivers may blow transistors when the motor stalls, and that could then damage the motor with excess current.? You might try Gecko G251 drives for smaller motors or the G203 for larger ones that need more current.? They will greatly improve performance, too. Hydraulics were an insane, Rube Goldberg stopgap measure when electronics was in its infancy, and you will not find any commercial machines with hydraulically-actuated axes today.? Putting hydraulic motors on a desktop mill is one of the most insane ideas I've ever heard.? Do you know where to get proportional hydraulic valves?? They will run about $5000 new, PER AXIS, and you are not likely to find used ones, especially in the size you would need.? You are also not likely to find hydraulic motors designed for servo axis use in the size you want. Have you actually had a stepper burn out from an overload?? Or did you have a drive fail and ruin the stepper, and you assumed the stall was the cause?? (I will say the old MaxNC stepper drives were QUITE awful, RL-type drives.)? There are much better drives and controllers. Jon -- Ron Thompson On the Beautiful Florida Space Coast, right beside the Kennedy Space Center, USA Think, Draw, Print. 3D printers ROCK! My hobby pages are here: Visit the castinghobby FAQ:

Previous Topic Next Topic