Correcting For Errors - HEIDENHAIN QUADRA-CHEK ND 1100 Operating Instructions Manual

11
11.9

Correcting for errors

Two error correction methods are available:
LEC: Linear Error Correction
SLEC: Segmented Linear Error Correction
Each method compensates for encoder and machine travel variations with
error correction coefficients. Coefficients are determined by comparing actual
measurements of a standard to the nominal values imprinted on it.
Linear error correction (LEC)
Linear error correction is performed in the LEC menu and compensates for
variations along an axis using one correction coefficient for the entire range of
motion on the axis. For example, an LEC coefficient of 0.0002 per mm applied to a
6 mm measurement along an axis produces a result of 6.0012 mm.
Segmented linear error correction (SLEC)
Segmented linear error correction is performed in the SLEC menu and
compensates for variations along an axis by applying correction values to several
individual segments of the measurement range. The use of multiple segments
increases the accuracy of measurements beyond the accuracy obtained by
applying a single correction coefficient to the entire axis—like what is used in LEC.
The correction starting point is mapped to the axis machine zero in addition to MZ
Offset.
84
A repeatable machine zero, established by crossing reference marks or
defining a manual hard-stop, must be present prior to performing SLEC
procedures.
Setup | Correcting for errors
HEIDENHAIN | ND 1100 | Operating Instructions | 05/2018