Measurement Support Functions; Automatic Tool Length Measurement; G37 - Mitsubishi Electric MELDAS C6 Programming Manual

15. Measurement Support Functions

15. Measurement Support Functions

15.1 Automatic tool length measurement; G37

Function and purpose
These functions issue the command values from the measuring start position as far as the
measurement position, move the tool in the direction of the measurement position, stop the
machine once the tool has arrived at the sensor, cause the NC system to calculate automatically
the difference between the coordinate values at that time and the coordinate values of the
commanded measurement position and provide this difference as the tool offset amount.
When offset is already being applied to a tool, it moves the tool toward the measurement position
with the offset still applied, and if a further offset amount is generated as a result of the
measurement and calculation, it provides further compensation of the present offset amount.
If there is one type of offset amount at this time, and the offset amount is distinguished between
tool length offset amount and wear offset amount, the wear amount will be automatically
compensated.
Command format
G37Z__R__D__F__ ;
Z : Measuring axis address and coordinates of measurement position ..... X, Y, z, α (where,
α is the additional axis)
R : This commands the distance between the measurement position and point where the
movement is to start at the measuring speed.
D : This commands the range within which the tool is to stop.
F : This commands the measuring feedrate.
When R_, D_ of F_ is omitted, the value set in the parameter is used instead.
<Parameter> ("TLM" on machining parameter screen)
• #8004 SPEED (measuring feedrate)
• #8005 ZONE r (deceleration range)
• #8006 ZONE d (measurement range) : 0 to 99999.999 (mm)
15.1 Automatic tool length measurement
: 0 to 60000 (mm/min)
: 0 to 99999.999 (mm)
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