HEIDENHAIN TNC 320 (340 55x-04) Cycle programming - Manual (Page 258)

258 Cycles: Coordinate Transformations
1
1
.9 W
O
RKING PLANE (Cy
c
le 1
9
, DIN/ISO: G80, Sof
tw
a
re
Option 1)
11.9 WORKING PLANE (Cycle 19,
DIN/ISO: G80, Software
Option 1)
Effect
In Cycle 19 you define the position of the working plane—i.e. the
position of the tool axis referenced to the machine coordinate
system—by entering tilt angles. There are two ways to determine the
position of the working plane:
„ Enter the position of the rotary axes directly.
„ Describe the position of the working plane using up to 3 rotations
(spatial angle) of the fixed machine coordinate system. The
required spatial angle can be calculated by cutting a perpendicular
line through the tilted working plane and considering it from the axis
around which you wish to tilt. With two spatial angles, every tool
position in space can be defined exactly.
If you program the position of the working plane via spatial angles, the
TNC will calculate the required angle positions of the tilted axes
automatically and will store these in the parameters Q120 (A axis) to
Q122 (C axis). If two solutions are possible, the TNC will choose the
shorter path from the zero position of the rotary axes.
The axes are always rotated in the same sequence for calculating the
tilt of the plane: The TNC first rotates the A axis, then the B axis, and
finally the C axis.
Cycle 19 becomes effective as soon as it is defined in the program. As
soon as you move an axis in the tilted system, the compensation for
this specific axis is activated. You must move all axes to activate
compensation for all axes.
If you set the function Tilting program run to Active in the Manual
Operation mode, the angular value entered in this menu is overwritten
by Cycle 19 WORKING PLANE.
Z
X
B
X
Z
Y
X'
Y'
Note that the position of the tilted coordinate system, and
therefore also all movements in the tilted system, are
dependent on your description of the tilted plane.