Programming manual
120
CNC 8070
6.
TOOL PATH CONTROL
Arc tangent to previous path (G08)
(SOFT V02.0X)
108
6.4 Arc tangent to previous path (G08)
Function G08 may be used to program a circular path tangent to the
previous path without having to program the center coordinates (I, J
or K).
Programming
Only the coordinates of the arc’s final (end) point must be programmed
either in polar or Cartesian coordinates along the axes of the work
plane.
The previous path may be either linear or circular.
Properties of the function
Function G08 is not modal, consequently, it must be programmed
every time when programming an arc tangent to the previous path.
After executing it, the CNC restores the G01, G02 or G03 function that
was active before.
Function G08 may also be programmed as G8.
Assuming the starting point is X0 Y40, we would like to program a straight
line, then an arc tangent to it and finally an arc tangent to the previous one.
G90 G01 X70
G08 X90 Y60 (Arc tangent to previous path)
G08 X110 (Arc tangent to previous path)
Function G08 cannot be used to program full circles because there are
infinite solutions.
i
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