Re: [Emc-users] Micro-switch repeatability

On 2/16/2016 9:40 PM, John Dammeyer wrote: > I believe they only use the home switch to figure out where the end of the > printer is. Once established for page of printing it's not used to > reference until perhaps the next page and probably not even then. From then > on the positioning is based

Re: [Emc-users] Micro-switch repeatability

I believe they only use the home switch to figure out where the end of the printer is. Once established for page of printing it's not used to reference until perhaps the next page and probably not even then. From then on the positioning is based on the motor steps. Just think if they had to do

[Emc-users] Anilam and Westamp Amplifier

I have a working Anilam Lathe with Servo Dynamics boards. The do run around 120v DC. In my circuit diagrams and in my machine there is a very large output choke in line with the motors. Possibly you need these. Cheers Wallace

Re: [Emc-users] Micro-switch repeatability

On 2/16/2016 6:47 AM, Bertho Stultiens wrote: > The micro-switches look like they can manage at almost no cost. But then > my curiosity got in my way on how far you actually can go with the > cheapo method. I'm now considering to take an old CD player and move the > laser-assembly onto several

Re: [Emc-users] Micro-switch repeatability

Look at how inkjet printers work. They need to trip a home switch so that each line of sprayed ink lines on to better then 1/1000th of an inch. They use a low cost optical device. There is a slot cut in a plastic block. One one side is a LED on the other a light detector. The look at each

Re: [Emc-users] Anilam and Westamp Amplifier

On Tuesday 16 February 2016 12:55:38 Mark Johnsen wrote: > I have a converted Anilam Crusader M to linuxcnc and I was looking at > the Westamp Servo amplifier and I'm not sure which model Anilam put in > the machine. I think it's a 10amp cont/22amp peak, but not sure. > > I have been able to

Re: [Emc-users] Needed, pyvcp expert

On Tuesday 16 February 2016 10:03:27 John Thornton wrote: > A multi-label will handle the label changes, not sure what your asking > for the hal pins to do that you can't do in hal with logic components. > > JT That is not the problem, at least so far. I take it that you have not seen what

[Emc-users] Anilam and Westamp Amplifier

I have a converted Anilam Crusader M to linuxcnc and I was looking at the Westamp Servo amplifier and I'm not sure which model Anilam put in the machine. I think it's a 10amp cont/22amp peak, but not sure. I have been able to find a manual for the amplifiers, but the manual uses a different part

Re: [Emc-users] Mattel 3D Printer

Lawn Darts ... yep those were fun but quickly got boring - no element of danger. The next thought was Lawn Dart wars.. since those steel tips weren't that sharp, they probably wouldn't "stick" ! We got a little crazy with those! I had a neighbor who would pay me a dollar or two

Re: [Emc-users] Micro-switch repeatability

agreed a near home switch and a home switch fanuc called the near hone a 'decel switch' tomp On 02/16/2016 10:42 PM, Kurt M. Sanger wrote: > When we were building high resolution printers we would use an optical > switch looking at a rotary flag in series with a linear switch to define > home.

Re: [Emc-users] Needed, pyvcp expert

A multi-label will handle the label changes, not sure what your asking for the hal pins to do that you can't do in hal with logic components. JT On 2/15/2016 8:59 PM, Gene Heskett wrote: > Howdy all; > > Looking at the gui additions for the camera stuff, is it possible to have > a bidirectional

Re: [Emc-users] Micro-switch repeatability

On 02/16/2016 06:46 AM, Bertho Stultiens wrote: > The only alternative is to use a level-based micro-switch. That, > however, will probably make it less accurate. Especially when you move > over it side-ways. The angle of attack is too small with respect to > the travel distance. I use

[Emc-users] Micro-switch repeatability

On 16 February 2016 at 14:46, Bertho Stultiens wrote: > On 02/16/2016 01:38 PM, Nicklas Karlsson wrote: > It seems that the micro-switches are well suited for the purpose, but > I > guess some hard (unbiased) data has yet to be gathered (outside of a > mill). > >>>

Re: [Emc-users] Emc-users Digest, Vol 118, Issue 61

On Tuesday 16 February 2016 08:15:43 Robert von Knobloch wrote: > On 16/02/16 14:02, emc-users-requ...@lists.sourceforge.net wrote: > >> Pass over the switch might be possible? > > > > No. The datasheets I've read all say the same that you must activate > > the plunger straigt on. Any angle will

Re: [Emc-users] Micro-switch repeatability

When we were building high resolution printers we would use an optical switch looking at a rotary flag in series with a linear switch to define home. We repeated well within ten thousandths of an inch. Kurt Sanger --

Re: [Emc-users] Micro-switch repeatability

On 02/16/2016 03:15 PM, TJoseph Powderly wrote: >> I heard rumors here a while ago about micro meter accuracy switch >> but I guess it might be a little bit expensive. > my-com switches, 1um guaranteed. every good german wedm uses them > and high end japanese > my-com > yes expensive paeng maak!

Re: [Emc-users] Micro-switch repeatability

my-com switches, 1um guaranteed. every good german wedm uses them and high end japanese my-com yes expensive paeng maak! but damn accurate tomp On 02/16/2016 02:53 PM, Nicklas Karlsson wrote: > I heard rumors here a while ago about micro meter accuracy switch but I guess > it might be a

Re: [Emc-users] Micro-switch repeatability

On 02/16/2016 02:01 PM, Lester Caine wrote: >> Indeed, unless you can crush them. There must be a run-into-the-wall >> protection, as mentioned earlier, to prevent killing your switch. > > The problem on the Taig is while one hits the end stop one end, you come > out of the nut the other ;) But

Re: [Emc-users] Emc-users Digest, Vol 118, Issue 61

On 16/02/16 14:02, emc-users-requ...@lists.sourceforge.net wrote: >> Pass over the switch might be possible? > No. The datasheets I've read all say the same that you must activate the > plunger straigt on. Any angle will give you bad performance. Any > sideways stress on the plunger can kill the

Re: [Emc-users] Micro-switch repeatability

On 16/02/16 12:26, Bertho Stultiens wrote: >> The alternatives seem to have the same problems of repeatability. Using >> > a hall sensor or optical one will give the same problems. Micro-switches >> > are at least inherently mechanically constrained. > Indeed, unless you can crush them. There must

Re: [Emc-users] Micro-switch repeatability

On 02/16/2016 01:38 PM, Nicklas Karlsson wrote: It seems that the micro-switches are well suited for the purpose, but I guess some hard (unbiased) data has yet to be gathered (outside of a mill). >>> The alternatives seem to have the same problems of repeatability. Using >>> a hall

Re: [Emc-users] Micro-switch repeatability

> On 02/16/2016 12:42 PM, Lester Caine wrote: > > On 16/02/16 10:21, Bertho Stultiens wrote: > >> It seems that the micro-switches are well suited for the purpose, but I > >> guess some hard (unbiased) data has yet to be gathered (outside of a mill). > > > > The alternatives seem to have the same

Re: [Emc-users] Micro-switch repeatability

On 02/16/2016 12:42 PM, Lester Caine wrote: > On 16/02/16 10:21, Bertho Stultiens wrote: >> It seems that the micro-switches are well suited for the purpose, but I >> guess some hard (unbiased) data has yet to be gathered (outside of a mill). > > The alternatives seem to have the same problems of

Re: [Emc-users] Micro-switch repeatability

On 02/16/2016 12:39 PM, Dave Caroline wrote: > I originally searched for a switch with data and a local distributor > had some movement specs of the plunger, I got some but unfortunately > that distributor no longer lists the item. but it is a Patterson V4 > type microswitch, the .tw website of

Re: [Emc-users] Micro-switch repeatability

On 16/02/16 10:21, Bertho Stultiens wrote: > It seems that the micro-switches are well suited for the purpose, but I > guess some hard (unbiased) data has yet to be gathered (outside of a mill). The alternatives seem to have the same problems of repeatability. Using a hall sensor or optical one

Re: [Emc-users] Micro-switch repeatability

I originally searched for a switch with data and a local distributor had some movement specs of the plunger, I got some but unfortunately that distributor no longer lists the item. but it is a Patterson V4 type microswitch, the .tw website of theirs is not easy to read though. One day I might fit

Re: [Emc-users] Micro-switch repeatability

On 02/16/2016 07:53 AM, Nicklas Karlsson wrote: > I heard rumors here a while ago about micro meter accuracy switch but > I guess it might be a little bit expensive. Well, yes. The "real" switches which are /specified/ with repeatability values of about 0.005mm are in the order of $200...$300 per