HEIDENHAIN iTNC 530 (60642x-04) Cycle programming - Manual (Page 321)

HEIDENHAIN iTNC 530 321
12.7 INTERPOLA
T
ION TURNING (Sof
tw
ar
e Option, Cy
cle 290, DIN/ISO:
G290)
12.7 INTERPOLATION TURNING
(Software Option, Cycle 290,
DIN/ISO: G290)
Cycle run
This cycle is used to create a rotationally symmetric shoulder or a
recess in the working plane, which is defined by the starting and end
point (siehe auch „Machining variants” auf Seite 325). The center of
rotation is the starting point (XY) at the time the cycle is called. The
rotational surfaces can be inclined or rounded relative to each other.
Interpolation-turning or milling cycles can be used to machine the
surfaces.
The workpiece is not rotated during interpolation turning. The tool
moves in a circular motion in the principal axes X and Y. At the same
time, the TNC orients the spindle S so that the cutting edge of the
turning tool is always oriented to the center of rotation of the
workpiece. Cycle 290 can thus also be used on a three-axis machine.
The center of the machining operation does not have to lie in the
center of a rotary table. The center of the machining operation is
defined by the tool position at the time the cycle is called.
1 The TNC moves the tool at clearance height to the starting point of
machining. The starting point is obtained by extending the contour
starting point tangentially by the set-up clearance.
2 The TNC uses the interpolation turning cycle to machine the
defined contour. In interpolation turning the principal axes of the
working plane move on a circle, whereas the spindle axis is
oriented perpendicularly to the surface.
6 At the end point of the contour, the TNC retracts the tool
perpendicularly by the set-up clearance.
4 Finally, the TNC retracts the tool to the clearance height.