Operation Manual

HEIDENHAIN CNC PILOT 640 189
4.4 Turning cycles
Cut, transverse finishing plunge—expanded
Select cut, longitudinal/transverse
Select plunge, transverse
Press the Expanded soft key
Press the Finishing run soft key
The cycle finishes the contour area from the contour starting point
to the contour end point. When the cycle is completed, the tool
remains at the cycle end position.
 The tool plunges with the maximum possible angle,
leaving material remaining.
 The steeper the tool plunges into the material, the
greater the feed rate decrease (max. 50%).
Cycle parameters
X, Z Starting point
X1, Z1 Contour starting point
X2, Z2 Contour end point
DXX Additive compensation number: 1-16 (siehe Seite 140)
G58 Contour-parallel oversize
A Plunge angle (range: 0° <= A < 90°; default: 0°)
W End angle—oblique cut at contour end
(range: 0° <= W < 90°)
R Rounding arc
G14 Tool change point (siehe Seite 140)
T Turret pocket number
ID Tool ID number
S Spindle speed/cutting speed
F Feed per revolution
B1, B2 Chamfer/rounding arc (B1 contour start; B2 contour end)
 B>0: Radius of rounding
 B<0: Width of chamfer
G47 Safety clearance (siehe Seite 140)
MT M after T: M function that is executed after the tool call T.
MFS M at beginning: M function that is executed at the
beginning of the machining step.