HEIDENHAIN TNC 640 (34059x-02) Cycle programming - Manual (Page 286)

Cycles: Turning
13.2 ADAPT ROTARY COORDINATE SYSTEM
(Cycle 800, DIN/ISO: G800)
13
286
TNC 640 | User's Manual Cycle Programming | 5/2013
13.2 ADAPT ROTARY COORDINATE
SYSTEM
(Cycle 800, DIN/ISO: G800)
Application
Your machine manufacturer may make own functions
available for aligning the tool. Refer to your machine
manual.
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.