
B-63783EN-1/01 1.AXIS CONTROL
- 87 -
In this case, when we apply current backlash compensation,
compensation becomes too much just after the direction change. With
circular cutting, cutting path will be shown in Fig.1.3.11(e).
Backlash compensation
is too much at this
oint
Fig. 1.3.11(e)
In order to avoid overcompensation just after change of direction, we
have developed smooth backlash compensation function, which
realizes to output backlash compensation value gradually, depending
on the distance from reverse point.
- Parameter setting
R
A
Fig. 1.3.11(f)
δ is calculated as δ = R*(1-cos φ)
So, please set this δ value to L2(#1847), B2 is final backlash value ,L1
is usually 0, and when some protrusion appears at ‘A’ point, please set
that value to B1, of course which will be smaller than B2 value.
- First-stage backlash compensation output
First-stage backlash compensation output is carried out at a point where
the direction of axis movement is reversed.
The amount (B
1
) of first-stage backlash compensation is specified
using parameter No. 1848.