HEIDENHAIN TNC 640 (34059x-01) Cycle programming - Manual (Page 283)

HEIDENHAIN TNC 640 283
13.2 AD
APT R
O
T
A
R
Y
COORDINA
TE S
Y
S
TEM (Cy
c
le 80
0)
13.2 ADAPT ROTARY COORDINATE
SYSTEM (Cycle 800)
Application
Before carrying out turning operations you must:
„ correctly position the tool
„ orient the tool tip
To bring the tool into suitable position, program a traversing block, e.g.
L Y+0 R0 FMAX
to the center of the turning spindle.
Use the cycle 800 ADAPT ROTARY COORDINATE POSITION to
orient the tool tip. Cycle 800 aligns the workpiece coordinate system
to the precession angle Q497 and correspondingly orients the tool tip.
The TNC orients the tool tip to the rotary table center for outer
machining and in the opposite direction for inner machining.
With the precession angle Q497 you define at which position on the
workpiece circumference machining should occur. This may be
necessary if you have to bring the tool into a specific position to
machine a process due to reasons of space. You can also rotate the
machining position to better observe machining processes. If you
carry out inclined turning, orient the precession angle of the tool tip
and the coordinate system to a suitable position (see User's Manual,
Turning chapter).
The turning cycles of the TNC can be used for inside and outside
machining. With Cycle 800 you can reverse the tool coordinate system
(REVERSE TOOL Q498). In this way you can use tools both for inside and
outside machining. The TNC then rotates the spindle by 180° and
reverses tool orientation TO.
Your machine manufacturer may make own functions
available for aligning the tool. Refer to your machine
manual.