CNC Dictionary

CNC Dictionary

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CNC Dictionary

2.5D to Brushless DC Motor

2.5 Axis or 2.5D CNC

3 Axis or 3D CNC

3DM (see also “Rhino”)

4 Axis CNC

4th Axis

5 Axis CNC

A-Axis

ABEC

Absolute Coordinates

Absolute Move

Accuracy

Acetal

ACME Screw

Active Low/High Logic

AGC: See Automatic Grinding Center

Angular Contact Bearing

Annealing

Arbor

ASE

ATC: Automatic Tool Changer

Automatic Grinding Center

Axes

Back Driving

Back EMF or Back Electromotive Force

Backlash

Backlash Compensation

Backlash Eliminator

Backplot

Balanced Turning: See “Pinch Turning”

Ball Mill

Ballnut

Ballscrew

Ballscrew Mapping

Bar Feeder

Bar Puller (see Bar Feeder)

B-Axis

Bed Mill

Bellows

Belt Drive

Bipolar Stepper or Driver

Block

Block Delete

Box Tool

Box Ways

Bounding Box

Breakout Board

Bridge Rectifier

Bridgeport Taper (see “R8 Taper”)

Brushless DC Motor

CAD to Cycle Stop

CAD (Computer Aided Design or Drafting)

CAM (Computer Aided Manufacturing)

Canned Cycle

Capacitor

Carbide

Carbide Inserts

Cartesian Coordinates

CAT Taper: See Taper

CAT5: See Taper

C-Axis

Center Cutting

Centerline Programming

Chain Drive

Chamfer

Charge Pump (See “Safety Charge Pump”)

Chatter

Chip Auger or Chip Conveyor

Chip Breaker

Chip Load or Chipload

Chopper Supply: See PWM

Chuck

Chucker

Circular Interpolation

Climb Milling

Clock Spring Cover

Closed Loop

Coarse In-Position

Cogging

Collet

Combination Lathe

Constant Surface Speed or CSS

Constant Velocity Mode

Contactor

Contouring

Contour Turning

Conventional Milling

Conversational CNC

Coolant

Coordinate Rotation

Coordinates: See Cartesian Coordinates

Coordinate Word

Counterbore

Counterweight

Crash

Cutter Force: See “Cutting Force”

Cutter Offset

Cutter Radius Compensation

Cutting Force

Cycle Start

Cycle Stop

Datum to Following Error

Datum

DDA

Deflection

Delrin: See Acetal

Detent Torque

Digitizer

DIN 66025

DNC

DOC (Depth of Cut)

Dongle

Dovetail Ways

Down or Downhill Milling: See Conventional Milling

Drawbar

Drill Bushing

Drill Drift

Drip Feed

Drive or Driver

DRO (Digital Read Out)

Dry Machining

Duplex Bearing

Dwell

Dwell Marks: See “Dwell”

DWG

DXF File

Edge Finder

Electrolytic Capacitor: See Capacitor

Encoder

End Mill or Endmill

E-Stop / Emergency Stop

Exact Stop Check

Exact Stop Mode

Face Mill or Facemill

F-Code

Feed

Feed Hold

Feed Override or Feedrate Override

Feed Speed: See Feedrate

Feedback or Feedback Loop

Feedrate or Feed Rate

Feeds and Speeds

Ferrite Beads

Fine In-Position

Finishing Pass

Fixture

Fixture Offset: TBD

Flood Coolant

Flutes

Flycutter or Fly Cutter

Following Error

Follow Turning

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F-Word: TBD

G12/G13 to Knee Mill

G12/G13 Circular Pocket Milling

Gang Tooling

Gantry Mill

Gas Spring

G-Code

GD&T: See Geometric Dimensioning & Tolerances

Gear Drive

Gecko

Geometric Dimensioning and Tolerances

Gibs

Gib Adjustment

G-Rex or GRex or G101

Hall Effect Sensor or Switch

Handwheels

Hardness

Harmonic Drive

Heat Treatment

Helical Beam Coupler

Helical Interpolation

Helix Angle

High Speed Machining or HSM

High Speed Steel or HSS

HMC: See “Horizontal Machining Center”

Holding Torque (see also “Torque”)

Home Position: See Machine Zero

Home Switch

Horizontal Machining Center

Horizontal Turning Center: TBD

HSS: See High Speed Steel

HTC: See Horizontal Turning Center

Hybrid Stepper Motor

Idle Current Reduction

IGES or Initial Graphic Exchange Specification

IGS (see also “IGES”): The file extension for IGES files.

Inches Per Minute

Inches Per Tooth (see also Chip Load)

Incremental Coordinates & Positioning: See Relative Coordinates

Index Pulse

Indexable Tooling

Inserts

Insert Drill

Interpolation: See Linear Interpolation or Circular Interpolation

Inverter: See VFD

IPAC (see “Keyboard Emulator”)

IPM: See Inches Per Minute

Jig

Jog, Jogging, and Jog Mode

Kerf: TBD

Keyboard Emulator

Knee Mill

Ladder Diagram to MPG

Ladder Diagram

Ladder Logic: See Ladder Diagram

Lapping

Laser Interferometry

Lead

Lead Accuracy

Lead Angle

Lead In/Lead Out

Leadscrew

Leadscrew Mapping: See Ballscrew
Mapping

Limit Switch

Linear Interpolation

Linear Motion

Linear Power Supply

Linear Scale

Linear Slide

Linear Ways

Live Tooling

Load Meter

Lookahead

Lost Steps

Lovejoy Coupler (see “Oldham Coupler”)

Mach 3

Machine Coordinates

Machine Reference: See Machine Zero

Machine Zero

Machining Center

Macros: TBD

Manual Pulse Generator or MPG

M-Codes

MDI (Manual Data Input)

Metrology: TBD

Micron: TBD

Microstepping

Microswitch

Mist Cooling

ModBus : See ModIO

Mode

Model: See Solid Model

ModIO

Moglice

Motion Control

Motor Driver: See Driver

MPG: See Manual Pulse Generator

N-Code to PWM

N-Code

Negative Rake

NEMA (23, 34, 42, Enclosure)

Nesting Software: TBD

Noise

Normalizing

NURB

Offsets

Oldham Coupler

Open Collector: See Active High/Low Logic

Open Loop

Optical Encoder: See “Encoder”

Optical Limit Switch

Optional Stop

Opto Isolator

Origin

Oz – in

Pallet Changer

Parallel Port (with pinout information)

Parameters

Parametric Drawing

Parametric Programming

Part Chute

Part Program

P-Code

Peck Drilling

Pendant

Peripheral Milling

Picture Frame Machining: TBD

Pinch Turning

PID

Pitch or Leadscrew Pitch

Plasma Table

Plunge

Pocket

Polygon Turning: TBD

Positive Rake

Post or Post Processor

Posting

Powered Drawbar

Preload (Bearings and Leadscrews)

Program Zero: See Work Zero

Print

Prismatic Ways

Probe: See “Touch Probe”

Profiling: See “Contour Turning”

Program Zero

Proximity Switch

PTFE

Pull Stud: See Retention Knob

Pulse Rate

PWM (Pulse Width Modulation)

Quadrature to Rulon

QCTP: TBD

Quadrature

Quill

R8 Taper: See Taper

Rack and Pinion

Ramping (Motor and Machining Technique)

Rapids

Rapid Traverse: See Rapids

Rectifier

Recutting

Refractometer

Regulated Power Supply

Relative Coordinates

Relative Zero

Relay

Repeatability

Resolution

Resolver

Resonance

Rest Machining: TBD

Retention Knob

Rhino 3D

Right-Hand Rule

Rigid Tapping

Rigidity

R-Level

Rockwell Scale: See Hardness

Roughing

Round Column Mill

Router Table

RPM

RS232

RS274

Rulon: See Acetal

Safe Start Block to Swiss Lathe

Safe Start Block

Safety Charge Pump

S-Code

Scallop: TBD

Scraping

Screw Machine

Screw Starts

Secondary Operations

Serial Port: TBD

Servo

Servo Amplifier

Servo Fault

Servo Gain

Servo Tuning

Set Point

Setup

SFM: See Surface Speed

Shielded Cable

Simulate: TBD

Single Block Mode

Single Shot Oiling

Slideways

Slitting Saw: TBD

Slot Drill / Mill: TBD

Slot Milling

Soft Jaws: TBD

Soft Limits

Solid Model

Solid State Relay

Solidworks

Spindle

Spindle Liner: TBD

Spindle Overide

Spindle Sensor or Spindle Index Sensor

Spindle Speeder

Spot Drilling: TBD

Square Column Mill

Squaring a Block

Squaring a Mill

STEP Files

Step / STEP & DIR

Step-over

Stepper

Stepper Resonance: See Resonance

Stick Slip

STL

Stress Relieving: TBD

Sturz Milling

Surface Speed

Swiss Lathe

Tangential Control to Workshift
Offset

Tangential Control

Tape Emulator: TBD

Taper

Tapered Gibs

Tapping Head

T-Code

TEA: See “Tool Engagement Angle”

Tempered

THC: See Torch Height Control

Thread Milling

Timing Belt

Tombstone

Toolchanger or Tool Changer

Tool Engagement Angle

Tool Length Offset

Tool Nose Radius and Tool Nose Radius Compensation

Tool Offset: Another name for Tool Length Offset

Toolpath or Tool Path

Toolpath Simulation

Tool Post: See “Posting”

Tool Probe: See “Touch Probe”

Tool Table

Tool Pre-Setter

Toolsetter

Torch Height Control

Toroidal Transformer

Torque

Touch Off

Touch Probe

Touchsetter: See Tool Pre-Setter

TPI: See “Turns Per Inch”

Tramming a Mill or Vise

Transformer

Travels

Trepanning

Tribology

T-Lathe

T-Slot

Turcite: See Acetal

Turning Center

Turns Per Inch or TPI

Turret

Twisted Pairs

Undercut

Unidirectional Positioning (G60): TBD

Unipolar Stepper or Driver

Up or Uphill Milling: See Climb Milling

USB

USB Key: See Also Dongle

Variable Helix Endmill: TBD

Vector Drive

Vertical Machining Center

Vertical Turning Center

VFD (Variable Frequency Drive)

VMC: See “Vertical Machining Center”

VTC: See “Vertical Turning Center”

Wall Wort or Wall Wart

Way Covers

Ways: See Slideways

Wear Offsets

Whipping (for leadscrews)

Wiper (for leadscrews and ways)

Woodruff Cutter: TBD

Word

Work Envelope

Work Hardening

Work Offset

Workpiece

Workshift Offset

Work Zero

X-Axis: See Axes

Y-Axis: See Axes

Z-Axis: See Axes