| I/O | (Input/Output)
Input
or
output
or
both
|
| I/O CHANNEL | Channel used to transfer data between input/output devices and the CNC.
|
| IC | Integrated
circuit
|
| IDLER | A gear or gears placed between two other
gears to transfer motion from one gear to the other
gear without changing their speed or ratio.
|
| IEEE | Institute
of
Electrical
and
Electronic
Engineers
|
| IMAGINARY TOOL NOTE | Point defined on an imaginary axial straight line extending from the tip of a
tool. This makes it easier to set the tool to its start position or reference position.
|
| IN-POSITION | State in which a servo motor is positioned to a point within a specified range
(previously set in the CNC).
|
| INCH THREADING | Precise threading in which the number of thread crests per inch is specified.
|
| INCH/METRIC SWITCHING | Selecting whether data is to be input in inch or metric units.
|
| INCREMENT SYSTEM | Generic term for least input increment and least command increment.
|
| INCREMENTAL
DIMENSION | A
dimension
expressed
with
respect
to
the
preceding
point
in
a
sequence
of
points
|
| INCREMENTAL
FEED | A
manual
or
automatic
input
of
preset
motion
command
for
a
machine
axis
|
| INCREMENTAL
PROGRAMMING | Programming
using
words
indicating
incremental dimensions
|
| INCREMENTAL
SYSTEM | Control
system
in
which
each
co-ordinate
or
positional
dimension
is
taken
frcm
the
last
position.
|
| INCREMENTAL FEED | Feeding a controlled axis by a preset amount each time the corresponding
button is pressed.
|
| INCREMENTAL PROGRAMMING | Method by which an amount of tool movement (relative to the previous tool
position) is programmed.
|
| INCREMENTAL VALUE | Distance or angle relative to the previous position.
|
| INDEPENDENT CHUCK | A chuck in which each jaw may
be moved independently of the others.
|
| INDEX PLATE | A metal disk or plate punched with
many holes arranged in a series of rings, one outside
the other each ring containing a different number of
holes.
|
| INDEX TABLE INDEXING FUNCTION | Indexing on the index table of a machining center.
|
| INDEXING | Movement
of
one
axis
at
a
time
to
a
precise
point
frcm
numeric commands
|
| INDEXING FIXTURE | A complete indexing unit
composed of a dividing head and rootstock
|
| INDICATOR | A precision instrument which shows
variations of thousandths of an inch or less when
testing the trueness or alignment of a workpiece,
fixture, or machine.
|
| INDUCTOSYN
SCALE | A
precision
data
element
for
the
accurate
measurement
and
control
of
angles
or
linear
distances,
utilizing
the
inductive
coupling
between
conductors
separated
by
a
small
air
gap
|
| INHIBIT | To
prevent
an
action
or
acceptance
of
data
by
applying
an
appropriate
signal
to
the
appropriate
input
|
| INITIAL POSITION | Level in a hole axial direction to which positioning is performed for the first
time during a canned hole machining cycle. Succeeding drills return to the R
Plane.
|
| INITIALIZE | To
cause
a
programme
or
hardware
circuit
to
return
a
programme,
a
system,
or
a
hardware
device
to
an
original
state
or
to
selected
points
with
a
computer
programme
|
| INPUT
RESOLUTION | The
smallest
increment
of
dimension
that
can
be
programmed
as
input
to
the
system
|
| INPUT | A
dependent
variable
applied
to
a
control
unit
or
system
|
| INPUT BUFFER | Area into which input data is temporarily saved.
|
| INSERTED-TOOTH CUTTER | A milling cutter designed
with replaceable cutting tooth inserts to save the
expense of a new cutter whenever the teeth become
damaged or worn. Generally, they are made 6 inches
or more in diameter.
|
| INSERTS | Inserts are cutting tips made of carbide, diamond, ceramic, or other materials, which can be easily inserted onto a cutting tool so you don’t have to remove and replace the entire tool when a tip becomes dull.
|
| INSTABILITY | The
state
of
property
of
a
system
where
there
is
an
output
for
which
there
is
not
corresponding
input
|
| INSTRUCTION
SET | The
list
of
machine
language
instructions
which
a
computer
can
perform
|
| INSTRUCTION | A
statement
that
specifies
an
operation
and
the
values
or
locations
of
its
operands
|
| INTEGRATED
CIRCUIT
(IC) | A
combination
of
interconnected
passive
and
active
circuit
elements
incorporated
on
a
continuous
substrate
|
| INTEGRATOR | A
device
which
integrates
an
input
signal,
usually
with
respect
to
time
|
| INTELLIGENT
TERMINAL | A
terminal
which
has
its
own
local
processing
power.
|
| INTERACTIVE
GRAPHICS | Ability
to
carry
out
graphics
tasks
with
immediate
response
from
the
computer
|
| INTERFACE | 1.
A
hardware
component
or
circuit
for
linking
two
pieces
of
electrical
equipment
having
separate
functions.
E.g.,
tape
reader
to
data
processor
or
control
system
to
machine.
2.
A
hardware
component-
or
circuit
for
linking
the
computer
to
external
I/O
device
|
| INTERFERENCE CHECK | Preventing a tool from overcutting the workpiece or from striking the tool on
the other tool post.
|
| INTERFEROMETER | An
instrument
that
uses
light
interference
phenomena
for
determination
of
wavelength,
spectral
fine
structure,
indices
of
refraction,
and
very
snail
linear
displacements
|
| INTERLOCK
BY-PASS | A
command
to
temporarily
circumvent
a
normally
provided
interlock
|
| INTERLOCK | To
arrange
the
control
of
machines
or
devices
so
that
their
operation
is
interdependent
in
order
to
assure
their
proper
co-ordination
|
| INTERLOCK | Preventing the movement of a controlled axis. This function is enabled by
supplying an interlock signal to the CNC.
|
| INTERMEDIATE GEAR | A gear or gears placed between two other
gears to transfer motion from one gear to the other
gear without changing their speed or ratio
|
| INTERNAL CIRCULAR CUTTING FEEDRATE CHANGE | Controlling circular cutting so that the feedrate for a programmed path
matches the specified cutting feedrate when the actual tool path is offset
within the programmed tool path.
|
| INTERPOLATION | 1.
The
insertion
of
intermediate
information
based
on
assumed
order
or
computation.
2.
A
function
of
a
control
whereby
data
points
are
generated
between
given
co-ordinate
positions
to
allow
simultaneous
movement
of
two
or
more
axes
of
motion
in
a
defined
geometric
pattern.
E.g.,
linear,
circular
and
parabolic.
|
| INTERPOLATION FUNCTIONS | Obtaining a tool path according to a function (such as a linear or arc function)
corresponding to a specified preparatory function.
|
| INTERPOLATOR | A
device
which
is
part
of
a
numerical
control
system
and
performs
interpolation
|
| INTERRUPT | A
break
in
the
execution
of
a
sequential
programme
or
routine,
to
permit
processing
of
high
priority
data
|
| INTERRUPTION TYPE CUSTOM MACRO | Calling a program to be executed by entering an interrupt signal to the CNC
during the execution of another program.
|
| INVERSE TIME FEED | Cutting feed for which the reciprocal of the time required to feed the tool is
specified.
|
| INVOLUTE INTERPOLATION | Determining the path necessary to move the tool along an involute curve in a
specified plane.
|
| ISO CODE | Information exchange code complying with the applicable ISO standard.
Used in numerical control.
|
| ITERATION | A
set
of
repetitive
computations,
in
which
the
output
of
each
step
is
the
input
to
the
next
step
|