Messages

41

General Mach Discussion / Re: gecko540 problem under mach3

« on: October 10, 2011, 09:42:49 PM »

ok

42

General Mach Discussion / Re: gecko540 problem under mach3

« on: October 10, 2011, 09:17:22 PM »

oops, forgot to ask,
I assume you have the PC  bios set to EPP mode??

RICH

yes  i have

43

General Mach Discussion / Re: gecko540 problem under mach3

« on: October 10, 2011, 09:16:56 PM »

yes Optiplex GX520

44

General Mach Discussion / Re: gecko540 problem under mach3

« on: October 10, 2011, 09:04:36 PM »

Series

45

General Mach Discussion / Re: gecko540 problem under mach3

« on: October 10, 2011, 08:53:58 PM »

I have block the longest is 9 "  i set  the  stp  to 400 in any way I could not get there in the distance 9" 228.6mm  I change everything step pulse vol, ace, it did not work , I had to change the step to 400.7596819 and then at 9''was ok ,  as I check several times this distance . after  I changed the distance to 1 inch , and at distance machine just traveled 25.2mm ,  as you can see all the time is the same problem  . gentlemen, I want to write again , This is not the only problem with this machine I have 4 machines , and 2 are on gecko540 and the same problem. one on NSK ball screw whit thk Linear   and the second ball screw form china  and  to thk Linear . 
I wonder if this is not a problem with the power support , the seller may put some cheap power supply, if you can give me some good power supply, I will exchange

46

General Mach Discussion / Re: gecko540 problem under mach3

« on: October 10, 2011, 06:55:54 PM »

Power Supply i buy from ebay

http://www.ebay.com/itm/gecko-4-axis-drive-4-taig-maxnc-sherline-cnc-lathe-mill-/160645363378?pt=LH_DefaultDomain_0&hash=item256735b6b2

ballscrew  ground NSK  C1 16MM  PINCH 5MM

stepper motor 8 wires

http://www.ebay.com/itm/Gecko-G540-w-Three-Nema-23-Steppers-620-oz-in-motors-/110748837990?pt=LH_DefaultDomain_0&hash=item19c9252866

47

General Mach Discussion / Re: gecko540 problem under mach3

« on: October 10, 2011, 06:46:02 PM »

IF you repeat the test at 3" does it repeat ok each time??  IF so then it SOUNDS as if you have a feedscrew problem IT is not consistant and has ERROR in the manufactoring of it. ERROR in the grinding of the screw. OR you may have a GIBB problem in the table itself. A very well known problem in the low cost china made stuff. It is LOW COST for a reason.

You may be able to use the screw MAPPING function to work some of it out.

(;-) TP

it goes every time in the same place, the problem is if you set the machine at a distance 76.2 it on shorter distances is bad

48

General Mach Discussion / Re: gecko540 problem under mach3

« on: October 10, 2011, 06:42:42 PM »

ok   i setup  the  motor tuning   for X axis  to 402.5
I checked how the machine goes into the distance

25.4 mm   Distance is not reached 0.06mm it is ok
50.80mm Distance is not reached  0.02mm it is ok
76.20mm Distance too far 0.108mm

49

General Mach Discussion / Re: gecko540 problem under mach3

« on: October 10, 2011, 04:19:58 PM »

set the machine at 402.68  This was a little too much the ok  is on 402  at a distance 76.2mm  but when I measured the distance to 2'' 50.80mm
machine is not reached at this distance traveled only to 50.60mm error  is .0.20mm  and this is the problem, if you  set to a distance, on the other distance is the error

50

General Mach Discussion / Re: gecko540 problem under mach3

« on: October 10, 2011, 03:33:41 PM »

I have 6 mm end mill