ST25Y Radial Mill Hex

[LUX93]

Seems like it's always simple things that are a headache for whatever reason. What I have is a 1" hex bar that is .010" oversize, I want to use an available endmill that is in a radial live holder to skim the face with the endmill. I messed with the C-axis to try and position it so it's paralell to the end of the tool but it seems to be some obscure number so before I bust out an indicator and get elbows deep into it I figured I'd run it by you guys to see if I'm overlooking a simple solution. I don't have an extra axial holder otherwise I would do it that way, which would be easier. I have run into situations like this before and would like to figure it out so I don't get hung up next time around. I'll post the program I have, block N4 is using a sub-routine to loop the toolpath. I would like to do it this way so it's easy to adjut the X-value to tweak the size since every batch of this material has this issue.

%
O23017(AXLE)
(----------------------------------------------)
( T0101|CNGG 432 )
( T1010|#1-.228 DRILL RADIAL )
( T1111|1/2" SPOT DRILL RADIAL )
( T0909|3/8" 3FL FLAT ENDMILL )
(---------------------------------------------)
N1 (- FACE/TURN -)
G00 G18 G20 G40 G80 G99
M98 P1
T0101( CNGG 432 )
G97 S2493 M3
G00 G54 X1.25 Y0. Z2.
G50 S4800
Z.1 / M8
M31
G1 Z0. F0.093
G01 X-0.063 F.008
G0 Z1. M09
M98 P1
M05
T0100
M00
( CHECK FACE FOR CLEANUP )
(- - - - - - - - - - - - - - - - - - - )
N2 ( FORM TAP DRILL )
G00 G18 G20 G40 G80 G99;
M98 P1
T1111 (- #1 DRILL -)
M154
G97 P6000 M133
G50 S6000
G00 G54 X0.7 Y0. Z2. C0.
Z.25 / M8
G98 G83 Z-1.1 I0.375 J0.1875 K0.05 R.1 F5.
C180.
G80 Z2. M9
M155
M135
M98 P1
T1100
M00
( OIL HOLE )
(- - - - - - - - - - - - - - - - - )
N3 ( TAP )
G00 G18 G20 G40 G80 G99
M98 P1
T1010(- 1/4-20 FORM TAP -)
G00 G54 X0.7 Y0. Z2. C180.
Z.25 / M8
S800
G95 C180. Z-0.5 R0.187 F0.05
C0.
G00 Z2. M9
M98 P1
T1000
M00
( MILL HEX TO 1" OTHERWISE RESET )
(- - - - - - - - - - - - - - - - - )
N4 (- MILL HEX -)
G00 G19 G20 G40 G80 G99
M98 P1
T0808( 3/8" EM )
M154
G97 P6000 M133
G00 G54 X1.25 Y0. Z2. C0.
Z.25 / M08
M97 P4001 L1
G00 G54 X1.25 Y0. Z2. C60.
M97 P4001 L1
G00 G54 X1.25 Y0. Z2. C120.
M97 P4001 L1
G00 G54 X1.25 Y0. Z2. C180.
M97 P4001 L1
G00 G54 X1.25 Y0. Z2. C240.
M97 P4001 L1
G00 G54 X1.25 Y0. Z2. C300.
M97 P4001 L1
G0 Z2. M9
M155
M135
M98 P1
M30
( - - - - - - - - - - - - )
( - - SUB-PGM - - )
N4001
Z.0125
Y-.5617
G98 G01 X1. F60.
Y-.3742 F33.
Y.3742
Y.6555
Y-.5617 Z-.1875
Y-.3742
Y.3742
Y.6555
Y-.5617 Z-.3875
Y-.3742
Y.3742
Y.6555
Y-.5617 Z-.5875
Y-.3742
Y.3742
Y.6555
Y-.5617 Z-.7875
Y-.3742
Y.3742
Y.6555
Y-.5617 Z-.9875
Y-.3742
Y.3742
Y.6555
Y-.5617 Z-1.1875
Y-.3742
Y.3742
Y.6555
Y-.5617 Z-1.3875
Y-.3742
Y.3742
Y.6555
Y-.5617 Z-1.5875
Y-.3742
Y.3742
Y.6555
Y-.5617 Z-1.7875
Y-.3742
Y.3742
Y.6555
Y-.5617 Z-1.9875
Y-.3742
Y.3742
Y.6555
Y-.5617 Z-2.1875
Y-.3742
Y.3742
Y.6555
G0 X1.25
Z.25
M99
%

 

[wmpy]

I'm not sure I understand the question. Are you having issues aligning the hex? I would use an indicator like you suggested to line up one of the flats parallel to the Y axis and then set that as C0 with G54. It shouldn't take long at all.

 

[Orange Vise]

so before I bust out an indicator and get elbows deep into it I figured I'd run it by you guys to see if I'm overlooking a simple solution.

That is the simple solution.

Sweep a flat of the hex in Y with a test indicator (mag base on turret). Manually jog C and resweep in Y. Rinse and repeat until you're dialed in then set that as your C-axis work offset.

 

[LUX93]

Thanks for the feedback. I was overthinking it, I did end up inidicating the flat parallel with the Y-axis and setting that in the work offset. I was thinking that X and Y would be moving together but once I started indicating it I realized it was a simple Y-axis movement.