
17. MEASUREMENT FUNCTIONS
B–63502EN/01
NC FUNCTION
160
Difference between the coordinate value of tool when tool end has reached
the measuring position and coordinate value of the measuring position is
automatically measured, calculated, and added to the currently set tool
offset amount by CNC system. The machine must be equipped with
measuring devices, for example tactile sensor, so that a signal is sent when
the tool end has reached the measuring position.
Measuring position coordinate value is commanded as follows:
G37 α_ ;
α : The measuring position is commanded in by either X, Y, or Z.
A
B
M
S
C
γ
ε
ε
γ : Deceleration point (parameter)
ε : Allowable measuring range (parameter)
Start position
Measuring position
The tool is moved from the start position to the deceleration point A in
rapid traverse, tool speed is decelerated to the measurement speed preset
by parameter, and moved on till the measuring position reach signal is
output. In case measuring position reach signal is not output in the
allowable measuring range (from point B to C), and alarm arises.
(New offset amount) = (Old offset amount) + (Measuring position
reach signal detected position) - (measuring position)
17.4
TOOL LENGTH
AUTOMATIC
MEASUREMENT
(G37) (M series)
M series
Format