Compensation (K3)
11.3 Interpolatory compensation
Turning, Milling, Nibbling
Function Manual, 11/2012, 6FC5397-1CP10-5BA0
223
point 0)
; for Z1: ± 0 µm
$AN_CEC [1.1] =0.01 ; 2. Compensation value (interpolation
point 1)
; for Z1: + 10 µm
$AN_CEC [1.2] =0.012 ; 3. Compensation value (interpolation
point 2)
; for Z1: + 12 µm
...
$AN_CEC [1.349] =0 ; last compensation value
; (interpolation point 350) for Z1: ± 0 µm
$AN_CEC_INPUT_AXIS[1] =(AX2) ; basic axis Y1
$AN_CEC_OUTPUT_AXIS[1] =(AX3) ; compensation axis Z1
$AN_CEC_STEP[1] =6.73 ; distance between interpolation points
6.73 mm
$AN_CEC_MIN[1] =-400.0 ; compensation starts at
; Y1 = -400 mm
$AN_CEC_MAX[1] =400.0 ; compensation ends at Y1 = +400 mm
$AN_CEC_DIRECTION[1] =0 ; table applies in both
; traversing directions of Y1
$AN_CEC_MULT_BY_TABLE[1] =0
$AN_CEC_IS_MODULO[1] =0 ; compensation without modulo function
M17
Table multiplication
With the table compensation function, any table can be multiplied by any other table (i.e.
even by itself). The multiplication link is established using the system variables described
above.
The following example for the compensation of machine foundation sagging illustrates an
application of table multiplication.
On large machines, sagging of the foundation can cause inclination of the whole machine.
For the boring mill in the second diagram below, for example, it is determined that
compensation of the X1 axis is dependent both on the position of the X1 axis itself (since this
determines angle of inclination b) and on the height of the boring mill (i.e. the position of the
Z1 axis).
To implement compensation, the compensation values of the X1 and Z1 axes must be
multiplied according to the following equation:
ΔX1 = Z1 * sinβ(X1) ≈ Z1 * β(X1)
;
VHW6FRPS
;
VHW
=
VHW
7DEOH
7DEOH
VLQ˟;
;
=
ː
Figure 11-6 Table multiplication
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