
1.AXIS CONTROL B-63323EN-1/03
- 100 -
+X
+Z
(1) When data is positive( D > 0 :
length is an extension )
x
( along the X axis )
D
z
( along the Z axis )
( Direction of thermal growth ) ( Direction of compensation to axis )
D : Thermal growth along tool axis data ( G178 to G179 )
: Amount of thermal growth compensation along tool axis
+Xx
+Z
(2) When data is negative( D
length is a reduction )
x
( along the X axis )
z
( along the Z axis )
( Direction of thermal growth ) ( Direction of compensation to axis )
D
Method of Compensation
This function calculates in real time.
And this function compensates the amount of compensation
corresponding to the inclination angle of the tool axis to the Cartesian
axis which composes the tool axis by using the compensation to the
direction of the tool axis.
The amount of the compensation, 9999 or more(-9999 or less) by using
the detection unit, cannot be output once for an axis.
i When the difference with the detection unit is 9999 or more(-9999
or less),
the alarm is generated. This alarm is cancelled by reset of CNC. j
If a large compensation amount is applied at one time, an alarm such as
an excessive error at stop time may be issued.
To apply a large compensation amount, divide it into several amounts
and input them separately.
This compensation amount is always absolute, and the amount by
which the machine moves at input is the difference from the previous
amount.