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linuxcnc/nc_files/frame_circ.ngc
Thaddeus Hughes 9d2379205f claude init
2026-04-03 21:47:22 -05:00

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; Circle perimeter cut - cuts inside or outside a circular profile
; Params: #1=x, #2=y, #3=diameter, #4=ztop, #5=zbot, #6=fincut, #7=mode
; Mode bitmask: bit0=conventional, bit1=bothways, bit2=plunge(vs helix), bit3=outside
; Uses arc lead-in/lead-out for smooth entry and exit
o<frame_circ> sub
; o<frame_circ> call [x][y] [diameter] [ztop][zbot] [fincut] [mode]
#<M_CONVENTIONAL> = [FIX[#7/1] MOD 2 EQ 1]
#<M_BOTHWAYS> = [FIX[#7/2] MOD 2 EQ 1]
#<M_PLUNGE> = [FIX[#7/4] MOD 2 EQ 1]
#<M_OUTSIDE> = [FIX[#7/8] MOD 2 EQ 1]
#<M_CLIMB> = [FIX[#7/1] MOD 2 EQ 0]
#<M_ONEWAY> = [FIX[#7/2] MOD 2 EQ 0]
#<M_HELIX> = [FIX[#7/4] MOD 2 EQ 0]
#<M_INSIDE> = [FIX[#7/8] MOD 2 EQ 0]
;G10 L0 ; re-read tool data
G90 ; absolute x,y,z
G90.1 ; absolute i,j,k
M101 ; enable Z-axis (M102 disables)
G17 ; select XY plane for arcs
#<td> = #<_td>
#<tr> = [#<td>/2]
o1 if [EXISTS[#<_z_clearance>]]
#<z_clearance> = #<_z_clearance>
o1 else
#<z_clearance> = #4
o1 endif
#<r_entry> = #<tr> ; lead-in arc radius, capped at 15% of diameter
o10 if [#<r_entry> GT #3*0.15]
#<r_entry> = [#3*0.15]
o10 endif
G0 Z#<z_clearance>
o20 if [#<M_INSIDE> AND #<M_CONVENTIONAL>]
; conventional, inner
G0 X[#1-#<r_entry>] Y[#2 + #3/2 - #<tr> - #<r_entry>]
G0 Z#4
G1 Z#5
G2 X#1 Y[#2 + #3/2 - #<tr>] I#1 J[#2 + #3/2 - #<tr> - #<r_entry>]
G2 X#1 Y[#2 + #3/2 - #<tr>] I#1 J#2
G2 X[#1+#<r_entry>] Y[#2 + #3/2 - #<tr> - #<r_entry>] I#1 J[#2 + #3/2 - #<tr> - #<r_entry>]
o20 elseif [#<M_INSIDE> AND #<M_CLIMB>]
; climb, inner
G0 X[#1+#<r_entry>] Y[#2 + #3/2 - #<tr> - #<r_entry>]
G0 Z#4
G1 Z#5
G3 X#1 Y[#2 + #3/2 - #<tr>] I#1 J[#2 + #3/2 - #<tr> - #<r_entry>]
G3 X#1 Y[#2 + #3/2 - #<tr>] I#1 J#2
G3 X[#1-#<r_entry>] Y[#2 + #3/2 - #<tr> - #<r_entry>] I#1 J[#2 + #3/2 - #<tr> - #<r_entry>]
o20 elseif [#<M_OUTSIDE> AND #<M_CONVENTIONAL>]
; conventional, outer
G0 X[#1+#<r_entry>] Y[#2 + #3/2 + #<tr> + #<r_entry>]
G0 Z#4
G1 Z#5
G2 X#1 Y[#2 + #3/2 + #<tr>] I#1 J[#2 + #3/2 + #<tr> + #<r_entry>]
G3 X#1 Y[#2 + #3/2 + #<tr>] I#1 J#2
G2 X[#1-#<r_entry>] Y[#2 + #3/2 + #<tr>+ #<r_entry>] I#1 J[#2 + #3/2 + #<tr> + #<r_entry>]
o20 elseif [#<M_OUTSIDE> AND #<M_CLIMB>]
; climb, outer
G0 X[#1-#<r_entry>] Y[#2 + #3/2 + #<tr> + #<r_entry>]
G0 Z#4
G1 Z#5
G3 X#1 Y[#2 + #3/2 + #<tr>] I#1 J[#2 + #3/2 + #<tr> + #<r_entry>]
G2 X#1 Y[#2 + #3/2 + #<tr>] I#1 J#2
G3 X[#1+#<r_entry>] Y[#2 + #3/2 + #<tr>+ #<r_entry>] I#1 J[#2 + #3/2 + #<tr> + #<r_entry>]
o20 endif
G0 Z#<z_clearance>
o<frame_circ> endsub
M2