HEIDENHAIN CNC Pilot 4290 - Manual (Page 81)

HEIDENHAIN CNC PILOT 4290 69
4.2 Basics of Pr
ogr
amming
Multipoint tools
For tools with more than one point (multiple tools) the T number is
followed by an
„. S”.
T number S S: Number of the cutting edge [0 to 4]
(0=main cutter - may be omitted)
In the TURRET section, you define only the main cutting edge.
When a cutting edge of a multiple tool has become dull, the tool life
management function marks all cutting edges ”worn-out.”
Examples:
■ T3 or T3.0 – Turret position 3; Main cutting edge
■ T12.2 – position to which the turret rotates 12; cutting point 2
Replacement tools
If you wish to use the Tool life monitoring function, you must define
an ”tool interchange chain.” As soon as a tool is worn out, the CNC
PILOT interchanges a replacement tool. The CNC PILOT does not stop
the program run until the last tool of the tool interchange chain is worn
out.
In the TURRET section and the T commands, you program the first
tool to be interchanged.The CNC PILOT inserts the replacement tool
automatically.
When programming variables (access to tool compensation or tool
diagnosis bits), you also address the first tool of the chain. The CNC
PILOT automatically addresses the ”active tool.”
You can define replacement tools in ”Setup” (see ” 3.3.4 Tool Life
Management”).
Danger of collision!
If cycle-programming steps are omitted
when a program is optimized:
■ A special feed rate remains in effect up
to the next feed-rate command (example:
finishing feed for recessing cycles).
■ Several cycles return diagonally to the
starting point if you use the standard
programming (example: roughing cycles).
4.2.5 Fixed cycles
HEIDENHAIN recommends programming a fixed cycle in the
following steps: (see: ”
4.18.1 Programming a Fixed Cycle”):
■ Insert tool.
■ Define the cutting data.
■ Position the tool in front of the working area.
■ Define the safety clearance.
■ Call a cycle.
■ Retract the tool.
■ Approach the tool change position.