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3.6
VARIOUS OPERATIONS AND FUNCTIONS
(Cont'd)
3.6.6
'
Tool'
Length
Measurement
£
This function measures tool length offset values for the length offset
commands
(G43,
G44,
and
G49.)
(1)
Outline
Mount the tool
on
the
spindle.
Contact the
tip of
the tool
to
the Z-axis
contact
level
by
manual
operation. Depress
the WRITE .& RETRACT
return
button switch... The
system
performs as
follows
:
(a)
Stores the
length
from the
set
Z-axis home
position
to
the reference
level
to
the currently specified offset number
memory.
Difference
between the
contact
level and the reference level
can
be
set by a
parameter.
(b) Add "I"
to
the offset number
to
get
ready
for the
next
Write-in.
(c) Increments the tool
to the
Z-axis home position.
(2)
Operations
(a)
Measurement of
length
of travel
(parameter
pm6008
D0
=
0)
[1] Mount the tool
on the spindle and position
to
the point
to
be the
home
position..
The.
home, position can be
set at
any position.
For
easy
replacement of
tools,
it is convenient
to
set
the
tool
replacement
position for
the home position.
[2]
Set the MODE select switch
to
manual
(RAPID.
JOG, HANDLE, or
STEP.)
[3]
Depress
PREPARATION
key
to
enter
the
preparation
process.
[4] Select TOOL
job.
This
enters
the tool offset value display
mode,
where offset numbers
that
are already specified
and data near the number are displayed.
[5]
Depress
the MEASUREMENT
push-button switch.
The MEASUREMENT
lamp lights
and the
current
position of
the
Z-axis
is stored as the home position.
(This
push-button
switch is effective
only
in the manual mode.
Confirm that the
system
stops
before
depressing
the
switch.)
The
preparation
process
is
automatically
selected and the
prepara¬
tion
process screen
appears.
-
610
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