Programming Technological Functions (Cycles); Drilling; General - Siemens SINUMERIK Series Operating Manual

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Programming technological functions (cycles)

General geometry parameters

● Retraction plane RP and reference point Z0

Normally, reference point Z0 and retraction plane RP have different values. The cycle

assumes that the retraction plane is in front of the reference point.

If the values for reference point and retraction planes are identical, a relative depth

specification is not permitted. Error message "Reference plane defined incorrectly" is output

and the cycle is not executed.

This error message is also output if the retraction plane is located after the reference point,

i.e. its distance to the final drilling depth is smaller.

● Safety clearance SC

Acts in relation to the reference point. The direction in which the safety clearance is active

is automatically determined by the cycle.

● Drilling depth

Depending on the selection of the drill shank or drill tip or the centering diameter, the

programmed drilling depth refers to the following for cycles with a selection field:

– Tip (drilling depth in relation to the tip)

– Shank (drilling depth in relation to the shank)

– Diameter (centering in relation to the diameter, only for CYCLE81)

Drilling positions

The cycle assumes the tested hole coordinates of the plane.

Operating Manual, 08/2018, 6FC5398-7CP41-0BA0

The drill is inserted into the workpiece until the drill tip reaches the value programmed

The drill is inserted into the workpiece until the drill shank reaches the value programmed

for Z1. The angle entered in the tool list is taken into account.

The diameter of the centering hole is programmed at Z1. In this case, the tip angle of

the tool must be specified in the tool list. The drill is inserted into the workpiece until the

specified diameter is reached.