Siemens SINUMERIK 840C User Manual

08.96 5 Measuring Cycles for Milling Machines and Machining Centres
5.2.4 L977 Measure web (paraxial)
5.2.4 L977 Measure web (paraxial)
Function and application
The measuring cycle measures two parallel surfaces (web) at points P1 and P2 in the
measuring axis. These two measured values are used to calculate the actual distance of the
parallel surfaces and the position of the centre point in the measuring axis (Fig. 5.12).
The probe is located above the determined centre point on completion of measurement.
Refers to web width only:
An empirical value stored in the SDC is subsequently allowed for with the correct sign.
In addition, averaging is performed over a number of parts and the tolerance bands are
checked (see Section 1.7.1).
No automatic compensation is carried out or alternatively length compensation or a radius
offset (difference is halved) is performed, depending on the definition of R10.
Preconditions:
• The probe must be called with tool offset and without G53.
• The probe must be positioned on the centre point of the parallel surfaces and the probe
ball approx. 1 mm above the parallel surfaces in the applicate.
• R19 is calculated incrementally from the starting position.
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Siemens AG 1990 All Rights Reserved 6FC5197- AB70 5–27
SINUMERIK 840/850/880 (BN)

Siemens SINUMERIK 840C Specifications

General

Brand	Siemens
Model	SINUMERIK 840C
Category	Control Unit
Language	English