HEIDENHAIN TNC 640 (34059x-02) Cycle programming - Manual (Page 567)

Measuring tool length (Cycle 31 or 481, DIN/ISO: G481) 20.4
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TNC 640 | User's Manual Cycle Programming | 5/2013
567
Please note while programming:
Before measuring a tool for the first time, enter the
following data on the tool into the tool table TOOL.T:
the approximate radius, the approximate length, the
number of teeth, and the cutting direction.
You can run an individual tooth measurement of tools
with
up to 20 teeth .
Cycle parameters
Measure tool=0 / Check tool=1: Select whether
the tool is to be measured for the first time or
whether a tool that has already been measured is to
be inspected. If the tool is being measured for the
first time, the TNC overwrites the tool length L in
the central tool file TOOL.T by the delta value DL =
0. If you wish to inspect a tool, the TNC compares
the measured length with the tool length L that is
stored in TOOL.T. It then calculates the positive or
negative deviation from the stored value and enters
it into TOOL.T as the delta value DL. The deviation
can also be used for Q-parameter Q115. If the delta
value is greater than the permissible tool length
tolerance for wear or break detection, the TNC will
lock the tool (status L in TOOL.T).
Parameter number for result ?: Parameter
number in which the TNC saves the status of the
measurement result:
0.0 : Tool is within tolerance
1.0 : Tool is worn (
LTOL exceeded)
2.0 : Tool is broken (
LBREAK exceeded).
If you do not wish to use the result of measurement
within the program, answer the dialog prompt with
NO ENT.
Clearance height: Enter the position in the spindle
axis at which there is no danger of collision with
the workpiece or fixtures. The clearance height is
referenced to the active workpiece datum. If you
enter such a small clearance height that the tool
tip would lie below the level of the probe contact,
the TNC automatically positions the tool above
the level of the probe contact (safety zone from
safetyDistStylus). Input range -99999.9999 to
99999.9999
Cutter measurement? 0=No / 1=Yes: Choose
whether the control is to measure the individual
teeth (maximum of 20 teeth)
Measuring a rotating tool for the first
time; old format
6 TOOL CALL 12 Z
7 TCH PROBE 31.0 TOOL LENGTH
8 TCH PROBE 31.1 CHECK: 0
9 TCH PROBE 31.2 HEIGHT: +120
10 TCH PROBE 31.3 PROBING THE
TEETH: 0
Inspecting a tool and measuring the
individual teeth and saving the status
in Q5; old format
6 TOOL CALL 12 Z
7 TCH PROBE 31.0 TOOL LENGTH
8 TCH PROBE 31.1 CHECK: 1 Q5
9 TCH PROBE 31.2 HEIGHT: +120
10 TCH PROBE 31.3 PROBING THE
TEETH:1
NC blocks in new format
6 TOOL CALL 12 Z
7 TCH PROBE 481 TOOL LENGTH
Q340=1 ;CHECK
Q260=+100 ;CLEARANCE HEIGHT
Q341=1 ;PROBING THE TEETH