NUM 1040 M - Page 137

CNC Operation
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5
5.2.1.7 Declaration of Axis Assignment
Axis assignment is used to modify the Xm Ym Zm physical reference system of the machine with respect to the Xp
Yp Zp part programme reference system. The part programme reference system is then adapted to the workpiece
orientation on the milling machine. Axis assignment can be positive or negative.
Axis assignment can be declared by keyboard entry (see below) or in a programme by external parameter E69003
(see Section 6.2 of the Programming Manual).
Requirements
No mode being executed. Otherwise, axis assignment is taken into account after an interruptible block.
Actions
Select origin shift mode (see 5.2.1.1).
Display the dialogue line (press four times). ☞
SHIFTS
Display on the dialogue line of "ASSIGNED AXES".
Enter "ASSIGNED AXES [new assignment]" (see notes below). ☞
The axis assignment is transferred to the SHIFTS page.
Notes
The assignments for the three axes must be declared on the same line. After each programme axis (X, Y, Z), function
P, Q, R identifies the corresponding machine axis (X, Y, Z). The plus or minus sign indicates whether assignment is
positive or negative.
Example:
ASSIGNED AXES: XR-YQ-ZP+
XR-: programme axis X assigned to machine axis Z with the opposite sign
YQ+: programme axis Y unchanged
ZP+: programme axis Z assigned to machine axis X with the opposite sign.
Assignment is refused if the command format is incorrect or the group to which it applies is not in reset state. If the
command is accepted, the tool direction (G16 ...) takes the assignment of programme axis Z.
It should be noted that axis assignment:
- reorients the programmed dimensions, the interpolation plane (possibly with reversal of the direction of rotation of
circles), the PQR material vectors, the coefficients of polynomial functions, the 2D tool offsets (possibly with
reversal of G41/G42) and the tool direction (G16...)
- is applied downstream of programmed geometric transformations such as angular offset (ED..), programmed offset
(G59), mirroring (G51...) and scaling factor (G74)
- is not applied to the dimensions programmed with respect to the mesurement origin (G52...)
- does not affect shifts DAT1, DAT2 and DAT3.