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Re: [Emc-users] Mini-itx 64bit mother board with parallel port

On Friday, February 4, 2022 10:58:00 PM EST Andy Howell wrote: > On 2/4/22 13:06, Chris Albertson wrote: > > On Thu, Feb 3, 2022 at 4:25 PM Andy Howell wrote: > >> Starting from scratch, I would likely stay away from parallel ports. > >> Our current CNC router's controller uses the parallel port,

Re: [Emc-users] Mini-itx 64bit mother board with parallel port

On 2/4/22 13:06, Chris Albertson wrote: On Thu, Feb 3, 2022 at 4:25 PM Andy Howell wrote: Starting from scratch, I would likely stay away from parallel ports. Our current CNC router's controller uses the parallel port, so that is what I have to go with. Buy an Ethernet Interfaced Mesa

Re: [Emc-users] What Would You Suggest?

I disagree. The physics of the motor, which include inductance along with the generated back emf from the motor spinning in the magnetic field, is what cause the torque of the motor to drop off the faster it goes. The problem is to spin a stepper motor you have to not just change to a new

Re: [Emc-users] What Would You Suggest?

What people continually get totally wrong with steppers is failing to understand that the maximum power is delivered at the corner frequency, and power output is constant above that. If you have an application that needs to move at say 2m a minute and your stepper stalls, there seems to be some

Re: [Emc-users] What Would You Suggest?

Hi Ken, I just went down to the shop and set up my ELS on the Gingery Lathe to simulate this. Since you don't have control over the height it does a move out of the way of the work to return at high speed to the BEGIN position. It's configured I BROACH mode so doesn't need to have the spindle

Re: [Emc-users] What Would You Suggest?

Hi John, I'm planning on controlling two axes. The third axis (vertical) would require a lot more gearing and my general experience is machine a surface, measure, drop down, machine some more, repeat. The ELS type of thing is about what I have in mind. Jog to set the xmin, xmax, ymin, ymax. Set

Re: [Emc-users] What Would You Suggest?

On Fri, Feb 4, 2022, 2:55 PM dave engvall wrote: > Hi, > I seem to remember a crank as in crankshaft lashup to drive the table. > Personally I think the hydraulic setup is better but harder to achieve. > The free lunch is hard to find. > Dave > > > Hmm I have a Covel hydraulic automatic surface

Re: [Emc-users] What Would You Suggest?

Hi, I seem to remember a crank as in crankshaft lashup to drive the table. Personally I think the hydraulic setup is better but harder to achieve. The free lunch is hard to find. Dave On 2/4/22 9:11 AM, John Dammeyer wrote: From: Kenneth Lerman [mailto:ler...@se-ltd.com] The longitudinal

Re: [Emc-users] What Would You Suggest?

In wanting to automate this grinder exactly how many axis do you want to control. I can see the movement of the table back and forth at that 1 RPM. I can see the cross slide at the end of each pass or pass and return? Finally I guess depth might also be desired to a total depth? If depth was

Re: [Emc-users] What Would You Suggest?

On Friday, February 4, 2022 12:47:30 PM EST Kenneth Lerman wrote: > I don't think I'm ready for yet another hobby (3-D printing), so I > think I'll just put an oversized motor and pulley. > > Gene -- What stepper family are you using for the lathe? (A link, > please.) > > Regards, > > Ken The

Re: [Emc-users] Mini-itx 64bit mother board with parallel port

On Thu, Feb 3, 2022 at 4:25 PM Andy Howell wrote: > > Starting from scratch, I would likely stay away from parallel ports. Our > current CNC router's controller uses the parallel port, so that is what > I have to go with. Buy an Ethernet Interfaced Mesa board for $89 and it has a DB25

Re: [Emc-users] What Would You Suggest?

Hi Kenneth, I don't know if this will be any use to you at all, and it's not Linuxcnc at least not yet. I an effort to emulate this: https://www.youtube.com/watch?v=z4t8pmsnYow Which is all powered by a PIC I liked this but didn't want to use a PIC. Tried first with an Arduino because I

Re: [Emc-users] What Would You Suggest?

I don't think I'm ready for yet another hobby (3-D printing), so I think I'll just put an oversized motor and pulley. Gene -- What stepper family are you using for the lathe? (A link, please.) Regards, Ken Kenneth Lerman 55 Main Street Newtown, CT 06470 On Fri, Feb 4, 2022 at 12:25 PM gene

Re: [Emc-users] What Would You Suggest?

Hi Ken, On 2/3/22 16:54, Kenneth Lerman wrote: I'm considering converting a surface grinder to CNC. To start, I'll probably just convert the longitudinal and transverse axes. I'll go with steppers for this -- I'm thinking NEMA-42 motors. My current Bridgeport clone uses servos and Jon Elson's

Re: [Emc-users] What Would You Suggest?

On Friday, February 4, 2022 10:31:23 AM EST Kenneth Lerman wrote: > Chris -- At my house, computers are all over the place. I think I have > a spare atom floating around. Also a couple of other machines. > Gene -- The grinder is here. >

Re: [Emc-users] What Would You Suggest?

> From: Kenneth Lerman [mailto:ler...@se-ltd.com] > The longitudinal travel is just over a foot, and it takes about 3-1/2 turns > of the crank to go that distance. I'm thinking around a second per turn > would be about the maximum. So, that's 60 RPM. I'm thinking of a 1:6 ratio > on the timing

Re: [Emc-users] What Would You Suggest?

Chris -- At my house, computers are all over the place. I think I have a spare atom floating around. Also a couple of other machines. Gene -- The grinder is here. The ways look pretty clean. The only accessory I

Re: [Emc-users] What Would You Suggest?

If looking for lowest cost solution you can us the old "Atom" computer to control the grinder as long as you do not need to run the mill and grider at the same time. Get an Eiternet interface Mesa card for the new machine, You need two config files, just load the one for the mill or the one for