
B-63783EN-1/01 10.TOOL FUNCTION
- 1045 -
- Operation upon a reset
The setting of the KWZ bit (bit 6 of parameter 2409) determines
whether the fixture offset is cancelled upon a reset. If the setting is 1,
the vector before the reset is held. If the setting is 0, the vector is
cleared. Clearing the vector, however, does not cause any movement
upon a reset.
- Setting data
(1) Groups of three parameters specifying a rotation axis and two
linear axes constituting a rotation plane
(parameters 6068 to 6076)
The first parameter of each group specifies the number of the
rotation axis, and the second and third parameters specify the
numbers of the linear axes. The order in which the two linear axes
are specified must be such that rotation in the positive direction
about the rotation axis agrees with the rotation from the positive
side of the first linear axis to the positive side of the second linear
axis.
Example) Let three axes X, Y, and Z of a four-axis machine form
a right-handed coordinate system and the remaining axis C
be such a rotation axis that the positive rotation about the
axis matches the counterclockwise rotation about the Z-axis
when the negative side of the Z-axis is viewed from the
positive side. Then, the three parameters specify the
following:
First parameter : 4 (C-axis)
Second parameter : 1 (X-axis)
Third parameter : 2 (Y-axis)
Up to three groups of parameters can be specified. In fixture
offset calculation, the data of the rotation axis of the first group is
calculated first. From the result, the data of the second and third
groups is calculated. If there are two or more rotation axes and if
a rotation plane varies with the rotation about another rotation
axis, the rotation plane with the relative rotation axis set to the 0°
position should be specified.
(2) Reference angle of the rotation axis and corresponding reference
fixture offset
The position of the rotation axis (reference angle) and the
corresponding fixture offset (reference fixture offset) are
specified.
The data is specified on the fixture offset screen.
Up to eight pairs can be specified.
(3) Parameter for enabling or disabling fixture offset for each
axis(FAX bit (bit 0 of parameter 1007))
The bit is set to 1 for an axis for which fixture offset is enabled.
This setting is unnecessary for a rotation axis.
(4) Parameter specifying a fixture offset type
(FTP bit (bit 1 of parameter 6004))
This parameter specifies whether movement is made according to
a change in the vector of fixture offset (when movement is made
about the rotation axis by the G54.2 command or in G54.2 mode).