Operation Manual

HEIDENHAIN CNC PILOT 640 315
4.7 Drilling cycles
Examples of drilling cycles
Centric drilling and tapping
The machining operation is to be performed in two steps. In the first
step, the Drilling, axial cycle drills the hole. In the second, the
Tapping, axial cycle taps the thread.
The drill is positioned at the safety clearance to the workpiece surface
(starting point X, Z). The hole starting point Z1 is therefore not
programmed. In the parameters "AB" and "V," you program a feed
reduction.
The thread pitch is not programmed. The CNC PILOT uses the thread
pitch of the tool. The return speed SR ensures that the tool is
retracted quickly.
Tool data (drill)
 TO = 8 (tool orientation)
 I = 8.2 (drilling diameter)
 B = 118 (point angle)
 H = 0 (the tool is not a driven tool)
Tool data (tap)
 TO = 8 (tool orientation)
 I = 10 (thread diameter M10)
 F = 1.5 (thread pitch)
 H = 0 (the tool is not a driven tool)