L977 Zo Determination In Slot (Paraxial) - Siemens SINUMERIK 840 User Manual

08.96
5.2.7

L977 ZO determination in slot (paraxial)

Function and application
The measuring cycle measures points P1 and P2 in the measuring axis inside the slot. The
two measured values are used to calculate the position of the slot centre point in the
measuring axis in relation to the workpiece zero point (see Fig. 5.15).
The difference is determined from the set centre point (start position) and the centre point
determined.
The multiplication factor for measurement path "2a" makes it possible to take into account the
variation range of the blanks (set value).
The probe is located above the slot centre determined when measurement is completed.
No automatic ZO entry is carried out or alternatively additive input of the measuring axis
difference is performed in the ZO memory specified, depending on the definition of R10.
Preconditions :
• The probe must be called with tool offset and without G53.
• The probe must be positioned at the slot centre point in the measuring axis, the probe ball
being positioned inside the slot in the applicate.
The following parameters must be defined prior to call:
Parameters Description
R10 = 0 No automatic ZO determination
= 1...4 Automatic ZO entry in ZO G54 ... G57
= 5 Automatic ZO entry in ZO G58
R13 = 0...359.5 Compensation angle position for monodirectional probe (see Section 2.5)
R22 Probe type/probe number (see Section 2.6)
R23 = 31 ZO determination in slot
R25 Variable measuring speed in mm/min
R25 = 0 Standard cycle value
R27 = 1...R Number of measurements at same location (typically 1...3)
max
R28 = 1...R Multiplication factor for measurement path "2a"
max
R30 = 1...3 Number of measuring axis (see Section 2.12)
R32 Set value slot width
R36 Safe area (centre point coordinates)
See Section 10.2 for result display parameters.
©
Siemens AG 1990 All Rights Reserved
SINUMERIK 840/850/880 (BN)
5 Measuring Cycles for Milling Machines and Machining Centres
5.2.7 L977 ZO determination in slot (paraxial)
6FC5197- AB70
5–37