PROGRAMMING9. PRESSING FUNCTION
G68I r J θ K ∆θ P d Q p ;
Nibbling is made at pitch p using a tool having diameter d, starting with
the point which forms angle θ with reference to the X-axis on the
circumference having radius r, with the preset tool position or the position
specified by G72 being set as the circle center, to the point which forms
angle θ + ∆θ with reference to the X-axis.
r: Radius of arc
The unit is input unit by a positive number.
θ: Angle formed between the first punch point and the + X axis.
The unit is input (deg), and the counterclockwise direction is
commanded by a positive number.
∆θ: Incremental angle from the first punch point to the least punch
The unit is input unit (deg). Counterclockwise nibbling is made
when this angle is commanded by a positive number.
d: Tool diameter value
The unit is input unit.
Nibbling is made outside the arc when this value is positive,
inside the arc when this value is negative, and on the
circumference when this value is 0.
The unit is 0.01 mm in mm input and 0.01 inch in inch input. This
pitch is specified as an arc length. For the commandable
maximum value, since it has been set by parameters No. 16186
(for metric input), No. 16187 (for inch input), refer to the machine
tool builder’s manual.
Circular Nibbling (G68)