Cycle Syntax
G00 X60. Z2. ; ← Position safety point
G71 U2.0 R0.5;
G71 P10 Q11 U0.2 W0.1 F0.25;
G71 U2.0 R0.5;
G71 P10 Q11 U0.2 W0.1 F0.25;
Parameter Explanation
U – Depth of cut in X-axis (radial value). If you program U2.0, each pass will remove 4mm in diameter.
R – Retract distance between rough passes.
P / Q – Start and End block numbers (e.g., N10 - N11).
U / W – Finish allowance on X and Z axes.
F – Feed rate for roughing.
Position Safety Point – Always include decimals in X/Z to avoid micron misinterpretation. For OD, go above diameter; for ID, go slightly below.
Visual Representation
🔸 In the first line (U), U refers to depth of cut and is always positive.
🔹 In the second line (U), U is the finish allowance. For OD turning, it's positive. For ID boring, it may need to be negative.
🔸 P and Q = start/end of contour.
🔹 Use drawing or animation to explain.
🔹 In the second line (U), U is the finish allowance. For OD turning, it's positive. For ID boring, it may need to be negative.
🔸 P and Q = start/end of contour.
🔹 Use drawing or animation to explain.