HEIDENHAIN SW 688945-03 - Manual (Page 233)

HEIDENHAIN CNC PILOT 620/640 233
4.5 Recessing cy
cles
Type of machining for technology database access: Recess turning
By setting the following optional parameters, you can define
additional contour elements:
 A:Oblique cut at contour start
 W:Oblique cut at contour end
 R:Rounding arc (in both corners of the contour valley)
 B1:Chamfer/Rounding at contour start
 B2:Chamfer/Rounding at contour end
Cycle run
1 Approach workpiece from starting point
2 Finish first side, taking optional contour elements into account;
then finish contour valley up to position just before end point X2/
Z2
3 Approach workpiece for finishing the second side on paraxial path
4 Finish second side, taking optional contour elements into account;
then finish remainder of contour valley
5 Finish chamfer/rounding at contour start / contour end, if defined
6 Move to the tool change point according to the G14 setting
G47 Safety clearance (see page 124)
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
MFE M at end: M function that is executed at the end of the
machining step
WP Displays which workpiece spindle is used to process the
cycle (machine-dependent)
 Main drive
 Opposing spindle for rear-face machining