Messages

11

General Mach Discussion / Re: Plasma Z floating head

« on: January 12, 2011, 02:51:39 AM »

Hi Br549,
             Thanks.


I'm still hesitating on what the exact vulue should it be for the distance between the MicroSwitch and the Torch collar?
Currently is 13.7mm.

Should this distance be the thickness of the plate that going to be cut, 6mm,?

thanks,

12

General Mach Discussion / Plasma Z floating head

« on: January 11, 2011, 08:28:23 AM »

Hello,
        This is my 1st post in Machsupport.
I have a 3 axis cnc router and  I want to convert it to a plasma machine, so far this is what I have done:

http://s1220.photobucket.com/albums/dd459/happytriger2000/Machsupport/?action=view&current=M4H02695.mp4
I wan the Z axis to do the same as in this video:

http://asooke.com/videos-cnc-plasma-with-thc-and-floating-%5Ban5HYBQWTpg%5D.cfm

Can anyone guide me from this point onwards?

thanks,

13

General Mach Discussion / Re: controller board with encoder feedback?

« on: December 01, 2010, 06:14:16 AM »

Ok, I decided not use the 2 linear scale for the moment, as I'm trying to figure out how to wire the AC servo to my BOB.
Need to solve this wiring 1st, currently I manage to make the AC servo Motor turn 1 direction using a SSR but turning the other direction is what tring to solve, anyone have any clue?

thanks

14

General Mach Discussion / Re: controller board with encoder feedback?

« on: November 24, 2010, 12:05:08 AM »

Is it possible to wire the A and B of the Linear scale to the servo driver's encoder input? since Linear scale has higher resolution, right?

15

General Mach Discussion / Re: controller board with encoder feedback?

« on: November 23, 2010, 10:43:30 AM »

Thanks Hood.
So basically there isn't any controller boards that could perform the same as the Industrial cnc controller, eg. Fanuc, Siemens, etcc..
Don't know if you heard of LNC, is Linux based and I'm might consider this for my machine.
http://www.lnc.com.tw/lnc/pou/englishweb/product_520_o.htm

16

General Mach Discussion / Re: controller board with encoder feedback?

« on: November 23, 2010, 09:32:28 AM »

what about this: http://dynomotion.com/Help/ClosedLoopStep/ClosedLoopStepper.htm
If Mach doesn't work, how about EMC2?

17

General Mach Discussion / Re: controller board with encoder feedback?

« on: November 23, 2010, 08:43:23 AM »

Hood,
         Thanks for the explanation.
Double closed loop is the answer.
My intention is to add the scales to the table to give table feedback in addition to motor feedback.
I will be using 1 x 3.5KW Mitsubishi AC servo + Driver to drive the lathe spindle, then the rest 2 axis will be using Yaskawa AC servo.
Controller board = Kflop, was going to use SmoothStepper, but not sure whether it support feedback.
2 Heidenhain Linear scale.
Cast iron lathe bed, Lathe spindle head.
will show some picture later.

18

General Mach Discussion / Re: controller board with encoder feedback?

« on: November 23, 2010, 03:47:15 AM »

Hi Hood,
            I want to build a cnc lathe, and how accurate can I get with Kflop + Heidenhan Linear scale?
What is a double close loop, and what is it for?

Freddy

19

General Mach Discussion / Re: controller board with encoder feedback?

« on: November 23, 2010, 03:28:01 AM »

hi guys,
           The Heidenhain Linear scale came with a box, APE-454, please open attachment for APE-371, output is incremental TTL...

20

General Mach Discussion / controller board with encoder feedback?

« on: November 22, 2010, 09:46:59 AM »

Hi,
    I woul'd like to know if Kflop board is the only board that support encoder feed back or there's other board that does that too?
I'm hooking up 2 Heidenhain LS 486 Linear scale to my machine, open attachment for pdf file.