Tool calibration with a probe (level 2). Fagor CNC 8055 for lathes, CNC 8055, CNC 8055 for other applications

2.

Operating manual

2.7.3

Tool calibration with a probe (level 2)

This calibration level requires the purchase of the right software options purchased and the use of a table-top probe.

Once the cycle has concluded, it updates the tool offset table with the length value X Z of the tool offset that is currently selected. The I and K values are updated to 0.

Defining the cycle data

The following data must be defined.

• Tool number (T) and tool offset (D) to be calibrated.

• Safety distance (Ds) for probe approach.

• Probing feedrate (F).

Probe position.

In this zone, one must indicate whether the cycle assumes the probe position defined in the machine parameters or the position defined in this zone. To select one of them, use the cursor to select the

"Machine parameters / Programmable parameters" field and press the two-color key.

TOOL WEAR MEASUREMENT

In this cycle, besides calibrating a tool, it is also possible to measure tool wear.

Using the tool wear measuring operation, the user can define the maximum tool wear value. After several tool wear measuring probing operations, the wear will increase and when it exceeds the set maximum value, the tool will be rejected.

To perform this cycle it is necessary to have a table-top probe, installed in a fixed position on the machine and with its faces parallel to axes X, Y, Z.

When accessing this calibration level, the CNC shows the following information:

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A.

Indicating the selected work mode.

B.

Graphic assistance for tool calibration.

C.

Current machine status.

D.

Tool number and associated offset.

E.

Calibration data.

F.

Type of operation and wear values.

G.

Probe position.

This level may be saved as part of a part-program using the [P.PROG] key or executed using the

[START] key.

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Operating manual

Defining the cycle data

The following data must be defined. Not all the data will always be available; the cycle will show the necessary data according to the chosen operation.

• Safety distance (Ds) for probe approach.

• Probing feedrate (F).

• Icon to set the Y axis direction.

• Type of operation:

The cycle allows doing a measurement or a calibration. To select the desired operation, place the cursor in the "Measurement / Calibration" field and press the two-color key. To take a measurement, define the following data.

Imax

Kmax

Maximum tool length wear measurement along the X axis.

Maximum tool length wear measurement along the Z axis.

Jmax Maximum tool length wear measurement along the Y axis.

Stop / Chg Cycle behavior when exceeding the maximum wear permitted. Use the two-color key to select one of them.

The "Stop" option interrupts the execution for the user to select another tool. With the "Chg" option, the cycle replaces the tool with another one of the same family.

Measuring is only available when purchasing the software option: "Tool life monitoring".

• Probe position.

In this zone, one must indicate whether the cycle assumes the probe position defined in the machine parameters or the position defined in this zone. To select one of them, use the cursor to select the "Machine parameters / Programmable parameters" field and press the two-color key.

Machine parameters: The cycle assumes the probe position defined in the machine parameters.

Programmed parameters: The cycle assumes the probe position defined in the cycle (Xmax,

Xmin, Ymax, Ymin, Zmax, Zmin).

Actions after completing the tool wear measuring cycle

To activate the rejected tool, either because it has been replaced with another one or because it will be used to keep working, the following options will be offered:

1.

Go into the tool table in ISO mode and delete the actual (real) life of that tool.

2.

Go into the tool table in ISO mode and write the desired value for the actual (real) life of that tool.

In this case, activating the tool requires the real life to be smaller than the nominal (rated) life value. Otherwise, the tool will appear as expired (worn out) (status = E).

2.

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