zoni wrote: hi if i use mcodes then can i define the area of oscilation ie between 50 and 150?
Yes. Or you could set up a system to oscillate between X and U.
on the other hand if we use uvw do they work indipendent of xyz and and help how to implement them
Not entirely. This is where it gets a bit complicated, but all moves in XYZABCUVW are coordinated, so every program block is run one at a time, then the next move starts at the end of the previous move. So you can't set the wheel head moving in one G-code line and then start another move while that one is ongoing.
If you need a continuous oscillation indpependent of coordinated axis motion then it has to be derived from some other source (but there are many ways to achieve this)
But you can use G-code subroutines that automatically calculate a set of wheelhead moves and infeed passes between two X axis limits and the required dimension.
Here is an example that I use for external turning on a lathe, it's almost exactly what you would need, and it can be called simply as a routine with a number of parameters.
On my machine it is
called from a GUI
but can be also called from MDI as O<turning>CALL [final-dia] [sfm] [increment] [feed] [end-z] [run-out-rad] [taper-angle] [tool-no]
Code:
;Turning
O<turning> sub
G8 ; Radius mode (easier maths)
G18 ; XZ Plane
G21 ; Metric Units
G90 ; Absolute Distance
G91.1 ; but not for arcs
M6 T#8 G43
#1 = [#1 / 2] ; because of radius mode
#14 = [#<_x>] (starting X)
#13 = #<_z> (starting Z)
#20 = [#6 * SIN[#7]]
#21 = [#6 * COS[#7]]
#22 = [#6 / COS[#7]]
#23 = [#5 + #6 - #20]
#24 = [[#13 - #23] * TAN[#7]]
G96 D1500 S#2 ; Constant Surface Speed Mode
m3 ;Start Spindle
g95 F#4 ; Feed-Per-Rev Mode
g4p1 ; Wait to reach speed
/ (debug, Turning finish rad #1 start rad #14 start length #13 finish length #5)
/ m1
O100 WHILE [#14 GT [#1 + #3 / 2]]
g0 X #14
#14=[#14-#3 / 2]
G1 X #14
G1 Z #23 X[#14 + #24]
O101 IF [#6 GT 0]
G2 Z#5 X[#14 + #24 + #21] I#21 K#20
G1 X[#14 + #24 + #21 + #3/2]
O101 ELSE
G1 X[#14 + #24 + [#3 * .6]]
O101 ENDIF
O104 IF [#7 LT 0]
G0 X#14
O104 ENDIF
G0 Z[#13]
O100 ENDWHILE
G0 x#1
G1 Z #23 X[#1 + #24]
O102 IF [#6 GT 0]
G2 Z#5 X[#1 + #24 + #21] I#21 K#20
G1 X[#1 + #24 + #21 + #3]
O102 ELSE
G1 X[#1 + #24 + #3]
O102 ENDIF
O106 IF [#7 LT 0]
G0 X#14
O106 ENDIF
G0 Z #13
G0 X #1 ; For touch-off
M5
G7
O<turning> endsub
M2
