HEIDENHAIN TNC 640 (34059x-05) Cycle programming - Manual (Page 319)

Turning Cycles (software option 50) 12.1
12
TNC 640 | User's Manual Cycle Programming | 1/2015
319
Working with turning cycles
You can only use turning cycles in Turning mode
FUNCTION MODE TURN.
In turning cycles the TNC takes into account the cutting geometry
(
TO, RS, P-ANGLE, T-ANGLE) of the tool so that damage to the
defined contour elements is prevented. The TNC outputs a warning
if complete machining of the contour with the active tool is not
possible.
You can use the turning cycles both for inside and outside
machining. Depending upon the specific cycle, the TNC detects
the machining position (inside/outside machining) via the starting
position or tool position when the cycle is called. In some cycles
you can also enter the machining position directly in the cycle.
After modifying the machining position, check the tool position and
rotation direction.
If you program M136 before a cycle, the TNC interprets feed rate
values in the cycle in mm/rev., and without M136 in mm/min.
If turning cycles are executed during inclined machining ( M144), the
angles of the tool to the contour change. The TNC automatically
takes these modifications into account and thus also monitors the
machining in inclined state to prevent contour damage.
Some cycles machine contours that you have written in a
subprogram. You program these contours with plain-language
path functions or FK functions. Before calling the cycle you must
program the cycle
14 CONTOUR to define the subprogram number.
You must call turning cycles 880 and 81x - 87x with
CYCL CALL or
M99. Before calling a cycle, be sure to program:
Turning mode
FUNCTION MODE TURN
Tool call
TOOL CALL
Direction of rotation of turning spindle, e.g. M303
Selection of speed/cutting speed FUNCTION TURNDATA SPIN
If you use feed rate per revolution mm/rev.,
M136
Tool positioning to suitable starting point e.g.
L X+130 Y+0 R0
FMAX
Adaptation of coordinate system and align tool
CYCL DEF 800
ADAPT ROTARY COORDINATE SYSTEM