Memory-Random Atc Specification - Okuma OSP-U100M Operation Manual

4203-E P-176
SECTION
1 DATA SETTING
(c) Tool length offset
Before carrying out the above steps (1) and (2),
set
the zero offset of the tool
axis.
Mount the tool
for setting.
Manually align the tool tip with the reference surface.
Press function key [F3] (CAL) and key in the data, which consists of
the axis name, the direction,
and the current position as viewed from the origin. Note, here, that the axis name represents the
axis parallel
to the
axis on which the tool
rotates (X-, Y- and Z-axis).
Generally, the axis name is Z-axis.
Example: CAL Z
10.5
CAL Z
-20.5
(4)
Press the WRITE key.
The data is set
at the position indicated by the cursor.
The tool offset number presently selected is identified by an asterisk
(*) appearing right before that
tool
offset number.
5-2.
ATC Pot
No./Tool No. Table
For
vertical
machining centers and other machines which
have a small number of tools, the
memory-random ATC specification is adopted and for machines with a large number of tools, the fixed
address ATC specification is adopted.
5-2-1 . Memory-random ATC Specification
;
In the memory-random ATC
system,
the tool set in the spindle is returned
to
the magazine
toolpot of the tool to be set in the spindle next. Therefore, the correspondence between
the tool number and the pot number will change each time the tool change cycle is carried
out.
This requires the initial correspondence
between
the tool number and the magazine
pot number to be stored in the control memory after setting all the tools in the magazine.
In
addition, since the use of a large-diameter tool
will cause an interference with adjacent
tools, the control must be capable of recognizing a large-diameter tool so that the toolpot
which accommodates one is placed between the pots having dummy tools or no tool. That is,
the large-diameter tool
must
be returned
to the toolpot originally stored.
A large-diameter tool is distinguished from other conventional
tools
based on the
machine
specifications. Distinguishing of tools-large-diameter tools and conventional tools
-
is made
according to the tool diameter and the
value
used to classify
tools into
these
two categories
depends
on
the machine specifications.
Setting of the correspondence between the tool number and toolpot number is made in the following two
ways:
(1)
The
table listing the original correspondence between the tool numbers and toolpot numbers
should be made beforehand on the display screen. After that, the tools are set in the toolpots in
accordance with the correspondence
table data.
(2)
Tools are
set in
the spindle and they are returned
to the magazine in the manual tool change
operations. In this case, the toolpot where the
tool in
the spindle is
to
be returned may be
specified or the one automatically selected may be
used,
as required.
Explanations in this section cover the procedure indicated in (1). For the procedure of
(2), please
refer
to
II, OPERATION, Section3,
4-1
"ATC".