Messages

1

General Mach Discussion / Re: Y-Axis

« on: January 08, 2016, 10:33:08 PM »

It returned to zero because it had the same backlash offset in the negative movement

2

General Mach Discussion / Re: Y-Axis

« on: January 08, 2016, 06:16:24 PM »

yup that was it.  the lock nuts were loose on the pinion gear which caused backlash whenever the axis change direction. that is why it was losing step only on the first position

thanks for all your help you guys are GR8T

3

General Mach Discussion / Re: Y-Axis

« on: January 08, 2016, 05:13:22 PM »

i think i have may have found the problem, by reducing the velocity i noticed that tere is some play in the rack and pinion gear.  i will review and get give you an update.
thanks for all the help

4

General Mach Discussion / Re: Y-Axis

« on: January 08, 2016, 04:26:20 PM »

why would i lose step on the first move and not on the rest?

5

General Mach Discussion / Re: Y-Axis

« on: January 08, 2016, 04:23:08 PM »

it shows as follows
1.9997
4
5.9997
8
9.9997
12

6

General Mach Discussion / Re: Y-Axis

« on: January 08, 2016, 04:08:45 PM »

my breakout board is cnc4PC C1G and using smooth steep uc3000

forgive me, for not clarifying myself  the moving to the first position it drills at 1.7" but thereafter it drills at 2" center. However all holes are off by .281" from the 0,0

7

General Mach Discussion / Re: Y-Axis

« on: January 08, 2016, 02:22:04 PM »

here is the modified code
%
O0000 (TEST3A)
(MASTERCAM - V13.)
(MC9 FILE  - C:\DOCUMENTS AND SETTINGS\ALL USERS\DOCUMENTOS\TEST3.MCX)
(POST      - )
(MATERIAL  - WOOD INCH)
(PROGRAM   - TEST3A.NC)
(DATE      - JAN-08-16)
(TIME      - 12:56)
(POST DEV  - NovaLab)
(NWDTOOL N"  1/4 STRAIGHT BIT" T1 D0. F2. L3. CD2. CL1. SD2. C0)
(NWDSTOCK X0. Y0. Z0. OTC OX0. OY0. OZ0.)
N100 G00 G17 G20 G40 G49 G80 G90
N110 T1 M06 (  1/4 STRAIGHT BIT)
N120 (MAX - Z.75)
N130 (MIN - Z-.3)
N140 G00 Z.75
N150 G00 X0. Y0. S18000 M03
N160 G99 G81 Z-.3 R.75 F200.
N170 X.97 Y2.
N180 Y4.
N190 Y6.
N200 Y8.
N210 Y10.
N220 Y12.
N150 G00 X0. Y0.Z0  S18000 M03
N160 G99 G81 Z-.3 R.75 F200
N230 G80
N240 M05
N250 G90
N260 M30
%

8

General Mach Discussion / Re: Y-Axis

« on: January 08, 2016, 02:21:12 PM »

it does go back to zero
the 1st the x0y0 fine the next hole 2" drills at 1.702.  the following holes are on 2in centers.
the DRo show as follows
0
1.9997
4
5.9997
8
9.9997
etc

9

General Mach Discussion / Re: Y-Axis

« on: January 08, 2016, 01:49:23 PM »

i will add a g00 x0 y0 z0 to the code see if it does

10

General Mach Discussion / Re: Y-Axis

« on: January 08, 2016, 01:02:35 PM »

this is from the Mach3 postprocessor in mastercam
%
O0000 (TEST3)
(MASTERCAM - V13.)
(MC9 FILE  - C:\DOCUMENTS AND SETTINGS\ALL USERS\DOCUMENTOS\TEST3.MCX)
(POST      - )
(MATERIAL  - WOOD INCH)
(PROGRAM   - TEST3.NC)
(DATE      - JAN-07-16)
(TIME      - 17:34)
(POST DEV  - NovaLab)
(NWDTOOL N"  1/4 STRAIGHT BIT" T1 D0. F2. L3. CD2. CL1. SD2. C0)
(NWDSTOCK X0. Y0. Z0. OTC OX0. OY0. OZ0.)
N100 G00 G17 G20 G40 G49 G80 G90
N110 T1 M06 (  1/4 STRAIGHT BIT)
N120 (MAX - Z.75)
N130 (MIN - Z-.3)
N140 G00 Z.75
N150 G00 X.97 Y0. S18000 M03
N160 G99 G83 Z-.3 R.75 Q.05 F200.
N170 Y2.
N170 Y4.
N180 Y6.
N190 Y8.
N200 Y10.
N210 Y12.
N220 Y14.
N230 Y16.
N240 Y18.
N250 G80
N260 M05
N270 G90
N280 M30
%
this is the default postprocessor
%
O0000(TEST4)
(DATE=DD-MM-YY - 08-01-16 TIME=HH:MM - 08:24)
(MCX FILE - C:\DOCUMENTS AND SETTINGS\ALL USERS\DOCUMENTOS\TEST4.MCX)
(NC FILE - \\CNC-MINI\GCODE\TEST4.NC)
(MATERIAL - WOOD INCH)
( T1 |   1/4 STRAIGHT BIT | H0 )
N100 G17 G20 G90 G40 G80 G64 G49 G0 M05
N102 G8 P1
N104 G90 M05 Z0
N108 T1 M6
N110 G0 G90 G54 X.97 Y2. C0.
N112 S18000 M3
N114 G43 H0 Z.75
N116 G17 G99 G83 Z-.3 R.75 Q.05 F180.
N118 Y4. Z-.3
N120 Y6. Z-.3
N122 Y8. Z-.3
N124 Y10. Z-.3
N126 Y12. Z-.3
N128 Y14. Z-.3
N130 Y16. Z-.3
N132 Y18. Z-.3
N134 G80
N136 G90 G49 Z0. M05
N140 G8 P0
N142 G17
N144 M30
%