Messages

11

General Mach Discussion / Re: strange behaviour / offset

« on: September 26, 2012, 04:42:55 AM »

I actually did connected the inputs in differential mode and for some reason that I can not understand, I am getting some issue with the Z axis that loose it's position toward the +.

I did a test as follows: up and down at 4000mm/min for 15 min and it comes back perfectly. however when I launch my milling code for the part, after few minutes it is already offset by few mm.

on x and y, there is no position loss, only on Z.

the stepper in x and y are setup a 10000 steps per rev and the z to 5000 steps per rev which bring all of them at 1000 value in motor setup. I put acceleration to 350mm/s2 which seems fine.

kernel speed (not sure that it affect anything with the RJ45) is set at 100khz.

any clue on what is going on?

hope we can solve this crazy situation...

12

General Mach Discussion / Re: strange behaviour / offset

« on: September 25, 2012, 05:03:11 PM »

hi,

just received the Ethernet card as recommended.

my dirvers are leadshine:
http://www.leadshine.com/UploadFile/Down/MA860Hm.pdf

on the USB card I used to have, puls+ and dir+ connected together to Vcc.

on the new CSMIO I have output pin for Dir+/Dir- and Pulse+/Pulse- this is why I do not see how it can be...

The overall machine stability is ok and repositionning sound ok.

when running 10hrs project, I found out that Z would go up sd machine (very slighty but after 10hrs I have about a Cm difference)

How shall I perform the connection? shall I insert the recommneded resistors?

13

General Mach Discussion / Re: strange behaviour / offset

« on: September 17, 2012, 03:13:39 AM »

I have this driver.

http://www.leadshine.com/ProductList.aspx?Type=9

the CSMIO-IPM looks good to me. I guess it would just work fine with the driver. correct?

14

General Mach Discussion / Re: strange behaviour / offset

« on: September 16, 2012, 11:52:41 PM »

hep...I am thinking of that UAB being the pb... I got few times USB link crash.

also crash are random. was using mach 3 with parallel interface on a previous machine and never got such pb...

which breakout board would you guys recommend to me?

I have 3 axis to drive, 3 home switches, one vfd spindle.

15

General Mach Discussion / strange behaviour / offset

« on: September 16, 2012, 01:56:47 PM »

I have a JCUT CNC with the USB interface.

from time to time, I get the machine not going to the requested coordinates input in g code. for example if I do z50, it may go z51. this happens very little but in the middle of long machining this is a big pb (see pics).

mach 3 shows the right coordinates. If I pause the machine and start again then if catches back the right coordinates.

any idea?

16

General Mach Discussion / Re: JNC-40M configuration?

« on: September 03, 2012, 04:29:14 PM »

thanks for the reply. I finally managed to setup all the machine... 

17

General Mach Discussion / Re: JNC-40M configuration?

« on: September 03, 2012, 12:46:33 PM »

look at feedrates... any clue?

18

General Mach Discussion / Re: JNC-40M configuration?

« on: September 03, 2012, 04:28:45 AM »

by the way. machine is moving fine and x,y,z movement is accurate. however I have an issue with the feedrate. I am not able to get it right... when moving at 5000mm/min, with override 100% it shows 1500 value.

If input a G code with f value, it still runs full speed...

any clue how to fix this?

19

General Mach Discussion / Re: JNC-40M configuration?

« on: September 03, 2012, 03:52:05 AM »

Ah, I configured the spindle settings to what was shown in a screenshot in the JNC manual, which was different than what was pre-configured. I reset the settings, and now the spindle works. I probably should have thought of that first

Have you been able to automatically start the cooling pump?

can you post a picture of this manual? I haven't got it... mine is a JCUT1218B. nice machine. I need to swap x and y and I do not know how to setup the spindle in mach motor tunning... I noticed that the bed is not levelled...I guess I will have to mill a wood template to get all flat.

20

Mach SDK plugin questions and answers. / probe scanning XY direction

« on: July 23, 2008, 01:55:09 AM »

hi,

the wizard for 3d scanning is good, however going up and down all the time is slow.

does anybody has developped a wizzard which would work as follows:
- start of scan at z depth.
- when probe detects touch, then it raises Z till end of touch.
- move X or Y step.
- if no touch then move Z down till touch
- then up one setp back and X or Y+

and so on?

to do this the probe shall be able to detect lateral contacts but I beleive it would be much faster way of scanning...

if this exist please let me know where to find the code!