Fanuc Macros

[MachineSMMC]

I am trying to make a macro to cut a round groove into some steel. I want it to ramp in and out of the cut. I am going to paste what I have so for below this post. The problem I am having is it always leaves a mark at the start and end point (the same spot). I think what is happening is there is a little rounding error.

 

If anyone has some ideas please let me know. If you have more questions either post here, email me [email protected] or give me a call 612-823-6477.

 

Thanks

 

Macro

%

O9050(O-RING MILLING MACRO)

(#7 D = CIRCLE DIAMETER)

(#9 F = FEEDRATE)

(R CANNOT EXCEED 24 PERCENT)

(#18 R = PERCENTAGE OF CIRCUMFERENCE TO RAMP IN AT)

(#26 Z = FINAL DEPTH)

(INTERNAL VARIABLES)

(#4 CIRCLE RADIUS)

(#5 LENGTH OF RAMP MOVE BASED ON THE PERCENTAGE USER DEFINES)

(#6 ANGLE OF RAMP MOVE)

(#10 X POSITION OF IN RAMP MOVE)

(#11 Y POSITION OF IN RAMP MOVE)

(#12 #1 INC MOVE)

#3=#18*.01

#4=#7/2

#5=[3.1416*#7]*#3

#6=[57.296*#5]/#4

#10=#4*COS[#6]

#11=#4*SIN[#6]

#12=#4-#10

G91G17

G00X#10Y-#11

G90G17

G00Z.1

G01Z.005F5.0

G91G17

G03X#12Y#11I-#10J#11Z[#26+[-.005]]F#9

G03I-#4

G03X-#12Y#11I-#4Z-[#26+[-.005]]F[#9*4]

G01Z.095F50.

(DONE)

G90G00Z1.

N9M99

%

 

Macro Details

G65 makes the command Simple

G66 makes the command Modal, must be canceled (G67)

P9050 is the Sub-program Number of the C’Bore Macro

F = Feedrate

D = Ring Centerline Diameter

--- R CANNOT EXCEED 24. ---

R = Percentage of Circumference to Ramp In At

Z = Final Depth of Cut

 

Z0 is ALWAYS Top of Surface to be Cut

 

Example G66 Code:

G66 P9050 D.5 Z-.05 R15. F5.

X0.0 Y0.0

X3.0 Y0.0

X6.0 Y0.0

G67

 

Example G65 Code:

G66 P9050 D.5 Z-.05 R15. F5.

X0.0 Y0.0

G66 P9050 D.5 Z-.05 P15. F5.

X3.0 Y0.0

G66 P9050 D.5 Z-.05 P15. F5.

X6.0 Y0.0

[mayday]

Are you cutting a simple o-ring groove

have you tried a circle mill path using inc. sub

or do you have multiple dia sizes you want the operator to edit

[I.C.O.N.]

"if your control allows"

If you do want the operator to adjust sizes make a circle toolpath to 1" and adjust the scale.

ex:.25 scale gives you .25 hole. works really well on EDM but is a little tricky on mills

[MachineSMMC]

We like to give the operators more control on the floor. We often cut overflow grooves into our mold plates to allow for rubber overflow to get rid of air. It is alot easier to just give the operator cavity locations and let them take care of the rest with a couple key strokes.

 

Thanks

[mayday]

you may want to edit in an over lap at end of full circle maybe 1/4 circle more to get rid of the dead spot to tool makes. also look at the code for highfeed to smoth out the machine path if you are running at high feed rates. g61.1?? not sure check your manual

[MachineSMMC]

That is what I am working on now is adding the code for an overlap. I was going to go .010 overlap. I think that should cover it.

 

Thanks