
B-63782EN/01 NC FUNCTIONS 3.INTERPOLATION FUNCTION
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3.7 POLAR COORDINATE INTERPOLATION (G12.1,G13.1)
Polar coordinate interpolation is a function that exercises contour
control in converting a command programmed in a Cartesian
coordinate system to the movement of a linear axis (movement of a
tool) and the movement of a rotary axis (rotation of a workpiece). This
function is useful for grinding a cam shaft.
Format
G12.1; Starts polar coordinate interpolation mode
(enables polar coordinate interpolation)
: Specify linear or circular interpolation using
coordinates in a Cartesian coordinate system
consisting of a linear axis and rotary axis
(virtual axis).
G13.1 Polar coordinate interpolation mode is
cancelled (for not performing polar
coordinate interpolation)
Specify G12.1 and G13.1 in Separate Blocks.