HEIDENHAIN ND 2100G - Manual (Page 216)

216 2 Installation and Specifications
2.4 F
o
rm
ulas
In this example, the runout of a shaft is determined by spinning the
shaft, dynamically measuring the shaft’s minimum and maximum
diameters and then subtracting the minimum diameter from the
maximum diameter.
R = dmx(C1)-dmn(C1)
In another example, the angle between high points of two cams is
determined by spinning the cam shaft, dynamically measuring the
rotational angle at each cam minimum, and subtracting the smaller
angle from the larger angle.
Encoder C1 measures cam 1, encoder C2 measures cam 2, and the
rotary encoder C3 measures the rotational angle of the cam shaft as it
spins.
A = dmx(C2,C3)-dmx(C1,C3)
C1
The RsetDyn function discussed on page 245 must be
used to clear existing samples before using the dmn and
dmx functions.
C1
C2
C3
The RsetDyn function discussed on page 245 must be
used to clear existing samples before using the dmn and
dmx functions.