Messages

51

General Mach Discussion / Re: Losing computers

« on: January 02, 2020, 01:14:58 PM »

When you say "I lost another one". WHAT failed on teh PC ? Power supply ? Capacitors on teh Motherboard ? Hard Drive?

Just a thought (;-) TP

52

General Mach Discussion / Re: Code snippets

« on: January 01, 2020, 10:56:30 AM »

DID you happen to interject a G90 or G91 into teh mix ? That code would have been for G90 code (absolute). Look on teh status line and see what is set G90 or G91.

(;-) TP

53

General Mach Discussion / Re: Code snippets

« on: December 21, 2019, 10:29:09 AM »

There are MANY ways to do this . Here is just one way.

G0 X0 Y0 Z0 (Centerpoint of hole)
( first pass of depth)
G1 Z-1 F10 (lower Z in center of hole)
G1 X2 F10 (move to Radius of hole)
G2 X2 Y0 I-2 J0 F10 ( Cut circle at 5mm { 3mm tool and 2 mm offset =5mm radius} radius from centerpoint)
G0 X0Y0 (return to centerpoint)

(2nd pass of depth)

G1 Z-2 F10
G1 X2 F10
G2 X2 Y0 I-2 J0 F10
G0 X0Y0

M30

It is always a good point to learn Gcode IF your machine uses it to control motion.

Hope that helps (;-) TP

54

General Mach Discussion / Re: Cutting wrong dimensions in only one spot

« on: November 01, 2019, 12:44:00 PM »

Just change the Gcode file for testing . Change G64 to G61 in the preamble.

(;-) TP

55

General Mach Discussion / Re: Cutting wrong dimensions in only one spot

« on: November 01, 2019, 10:36:43 AM »

You said you already tried turning CV off with no change Here I see no difference between G64 and G61
(CV on CV off) when ploting teh Gcode.

(;-) TP

56

General Mach Discussion / Re: Cutting wrong dimensions in only one spot

« on: November 01, 2019, 10:33:52 AM »

Taking a skim cut is not like doing a full cut on teh machine flex wise. The pen trick will tell teh story.

Have you by chance tried reversing teh direction of cut to see IF it changes anything ? As is you are doing a climb cut.

(;-) TP

57

General Mach Discussion / Re: Cutting wrong dimensions in only one spot

« on: November 01, 2019, 09:21:49 AM »

First thing to test is to put a pen in your spindle and let teh machine DRAW teh part to see if cutting forces are contributing to teh problem.

(;-) TP

58

General Mach Discussion / Re: Cutting wrong dimensions in only one spot

« on: October 31, 2019, 01:20:56 PM »

Try cutting it with CV turned off (G61). What is teh look ahead setting ?

I have drawn this in an XY plotter ran by Mach3 about 20 times now 20 different ways and each time Mach3 drew it exactly how it plotted it in teh toolpath.

But I am still looking for something that could case this OTHER than the hardware. What type machine cut this. Steppers or servos ?

(;-) TP

59

General Mach Discussion / Re: Cutting wrong dimensions in only one spot

« on: October 31, 2019, 12:29:01 PM »

Seeing how teh Gcode is a centerline profile how could it match teh actual cut seeing how there is a .125" offset of teh cutting tool. A conversion had to be made to be able to plot teh cut profile based on teh Gcode.

Just a thought, (;-) TP

60

General Mach Discussion / Re: Cutting wrong dimensions in only one spot

« on: October 31, 2019, 10:23:09 AM »

OK that checks out now HOW did you derive teh Black line plot you used to compare to teh actual cut profile that you measured ?

(;-) TP