CEED Wiki - User contributions [en]

CNC

2026-10-28T20:10:33Z

Vcarr020: /* How Does It Work? */

== CNC Basics - What is CNC? ==

=== Computer-Controlled Manufacturing ===
Computer-controlled manufacturing uses digital instructions to control equipment that produces, modifies, or inspects physical components.These instructions may control the movement of a cutting tool, the deposition of material, the path of a laser, or the operation of an automated production process.Computer-controlled manufacturing connects digital design to physical production. It enables repeatable processes, complex geometries, and automation across a wide range of materials and industries.

'''Computer Numerical Control (CNC)''' is one category of computer-controlled manufacturing. Other examples include 3D printing, laser cutting, and automated inspection.

CNC manufacturing can have confusing terms, go see [[CNC Nomenclature|CNC nomenclature]] if there a word you don't quite understand.

=== How Does It Work? ===
Most computer-controlled manufacturing processes follow a similar workflow.

# Design: A component is designed using Computer-Aided Design (CAD) software or another suitable digital design tool.
# Process planning: A manufacturing method is selected based on the part geometry, material, accuracy requirements, and production volume.
# Manufacturing preparation: Software converts the design into instructions appropriate for the selected process. These may define toolpaths, cutting parameters, print layers, or laser movements. These instructions are called [[G-code]].
# Simulation and verification: Where supported, the planned process is checked for errors, collisions, or other potential problems.
# Setup: The material is prepared, the workpiece or build area is established, and the required equipment settings are configured.
# Production: The equipment executes the programmed instructions to manufacture the component.
# Post-processing and inspection: The part may require support removal, finishing, heat treatment, cleaning, or dimensional inspection.

The exact workflow depends on the manufacturing method. For example, CNC milling generally removes material from a solid workpiece, while 3D printing builds a component by adding material.

== Common Types of CNC Manufacturing ==

=== Subtractive Manufacturing ===
Subtractive manufacturing produces a component by removing material from a larger piece of stock.

* CNC milling: Uses a rotating cutting tool to produce pockets, slots, holes, and flat or contoured surfaces.
* CNC turning: Removes material from a rotating workpiece to produce cylindrical features such as shafts and bushings.
* CNC grinding: Uses an abrasive process to achieve specific dimensional and surface-finish requirements.
* CNC routing: Machines materials such as wood, plastics, composites, and suitable metals using programmed cutting paths.

Typical applications: Precision components, brackets, shafts, housings, fixtures, and mechanical assemblies.

=== Additive Manufacturing ===
Additive manufacturing produces components by adding material according to a digital model, typically in successive layers. [[Digital technologies/3D printing/Tutorial: How to 3D print|3D printing]] is the most familiar example of additive manufacturing.

Common methods include:

* Fused Filament Fabrication (FFF/FDM): Melts and deposits thermoplastic filament to build a component layer by layer.
* Resin printing (SLA/MSLA): Uses light to selectively cure liquid photopolymer resin.
* Powder Bed Fusion: Uses a heat source, such as a laser, to fuse selected regions of a powder bed. Depending on the process, it can manufacture metal or polymer components.
* Material Jetting: Deposits droplets of material that are subsequently solidified or cured.

Typical applications: Prototypes, custom housings, jigs and fixtures, complex internal geometries, lightweight structures, and low-volume production.

Key consideration: Additive manufacturing can produce shapes that are difficult to machine, but parts may require support structures, post-processing, and careful consideration of material properties and build orientation.

=== Computer-Controlled Cutting ===
These processes separate material along programmed paths without relying on conventional milling or turning.

* [[Digital technologies/Laser cutting/Tutorial: How to Laser Cut|Laser cutting]]: Uses a focused laser to cut suitable sheet materials.
* Waterjet cutting: Uses a high-pressure water jet, sometimes mixed with abrasive particles, to cut a wide range of materials.
* Plasma cutting: Uses a high-temperature plasma jet to cut electrically conductive materials, particularly metals.

Typical applications: Sheet-metal parts, flat brackets, panels, plate components, and cut profiles for fabrication.

Key consideration: These processes are particularly useful for producing two-dimensional profiles from sheet or plate stock. Their suitability depends on material thickness, edge quality, dimensional requirements, and the geometry required.

=== Electrical Discharge Machining (EDM) ===
EDM removes electrically conductive material through controlled electrical discharges.

Common forms include wire EDM, which cuts profiles using a continuously moving wire electrode, and sinker EDM, which produces cavities using a shaped electrode.

Typical applications: Intricate profiles, precision tooling, moulds, and features in electrically conductive materials that are difficult to machine using conventional cutting tools.

Key consideration: EDM is not a general-purpose process for every material. It requires electrically conductive workpieces and is often selected for specific geometry or precision requirements.

=== Computer-Controlled Inspection ===
Digital manufacturing also includes equipment used to measure and verify components.

* Coordinate Measuring Machines (CMMs): Measure geometric features using a probe and a defined coordinate system.
* Optical inspection systems: Use cameras or optical sensors to measure features without necessarily contacting the component.
* 3D scanning: Captures surface geometry to create a digital representation that can be compared with a CAD model.

Typical applications: Quality control, dimensional verification, reverse engineering, and checking manufactured parts against design requirements.

CNC

2026-10-28T20:05:54Z

Vcarr020: /* Common Types CNC Manufacturing */

== CNC Basics - What is CNC? ==

=== Computer-Controlled Manufacturing ===
Computer-controlled manufacturing uses digital instructions to control equipment that produces, modifies, or inspects physical components.These instructions may control the movement of a cutting tool, the deposition of material, the path of a laser, or the operation of an automated production process.Computer-controlled manufacturing connects digital design to physical production. It enables repeatable processes, complex geometries, and automation across a wide range of materials and industries.

'''Computer Numerical Control (CNC)''' is one category of computer-controlled manufacturing. Other examples include 3D printing, laser cutting, and automated inspection.

=== How Does It Work? ===
Most computer-controlled manufacturing processes follow a similar workflow.

# Design: A component is designed using Computer-Aided Design (CAD) software or another suitable digital design tool.
# Process planning: A manufacturing method is selected based on the part geometry, material, accuracy requirements, and production volume.
# Manufacturing preparation: Software converts the design into instructions appropriate for the selected process. These may define toolpaths, cutting parameters, print layers, or laser movements.
# Simulation and verification: Where supported, the planned process is checked for errors, collisions, or other potential problems.
# Setup: The material is prepared, the workpiece or build area is established, and the required equipment settings are configured.
# Production: The equipment executes the programmed instructions to manufacture the component.
# Post-processing and inspection: The part may require support removal, finishing, heat treatment, cleaning, or dimensional inspection.

The exact workflow depends on the manufacturing method. For example, CNC milling generally removes material from a solid workpiece, while 3D printing builds a component by adding material.

== Common Types of CNC Manufacturing ==

=== Subtractive Manufacturing ===
Subtractive manufacturing produces a component by removing material from a larger piece of stock.

* CNC milling: Uses a rotating cutting tool to produce pockets, slots, holes, and flat or contoured surfaces.
* CNC turning: Removes material from a rotating workpiece to produce cylindrical features such as shafts and bushings.
* CNC grinding: Uses an abrasive process to achieve specific dimensional and surface-finish requirements.
* CNC routing: Machines materials such as wood, plastics, composites, and suitable metals using programmed cutting paths.

Typical applications: Precision components, brackets, shafts, housings, fixtures, and mechanical assemblies.

=== Additive Manufacturing ===
Additive manufacturing produces components by adding material according to a digital model, typically in successive layers. [[Digital technologies/3D printing/Tutorial: How to 3D print|3D printing]] is the most familiar example of additive manufacturing.

Common methods include:

* Fused Filament Fabrication (FFF/FDM): Melts and deposits thermoplastic filament to build a component layer by layer.
* Resin printing (SLA/MSLA): Uses light to selectively cure liquid photopolymer resin.
* Powder Bed Fusion: Uses a heat source, such as a laser, to fuse selected regions of a powder bed. Depending on the process, it can manufacture metal or polymer components.
* Material Jetting: Deposits droplets of material that are subsequently solidified or cured.

Typical applications: Prototypes, custom housings, jigs and fixtures, complex internal geometries, lightweight structures, and low-volume production.

Key consideration: Additive manufacturing can produce shapes that are difficult to machine, but parts may require support structures, post-processing, and careful consideration of material properties and build orientation.

=== Computer-Controlled Cutting ===
These processes separate material along programmed paths without relying on conventional milling or turning.

* [[Digital technologies/Laser cutting/Tutorial: How to Laser Cut|Laser cutting]]: Uses a focused laser to cut suitable sheet materials.
* Waterjet cutting: Uses a high-pressure water jet, sometimes mixed with abrasive particles, to cut a wide range of materials.
* Plasma cutting: Uses a high-temperature plasma jet to cut electrically conductive materials, particularly metals.

Typical applications: Sheet-metal parts, flat brackets, panels, plate components, and cut profiles for fabrication.

Key consideration: These processes are particularly useful for producing two-dimensional profiles from sheet or plate stock. Their suitability depends on material thickness, edge quality, dimensional requirements, and the geometry required.

=== Electrical Discharge Machining (EDM) ===
EDM removes electrically conductive material through controlled electrical discharges.

Common forms include wire EDM, which cuts profiles using a continuously moving wire electrode, and sinker EDM, which produces cavities using a shaped electrode.

Typical applications: Intricate profiles, precision tooling, moulds, and features in electrically conductive materials that are difficult to machine using conventional cutting tools.

Key consideration: EDM is not a general-purpose process for every material. It requires electrically conductive workpieces and is often selected for specific geometry or precision requirements.

=== Computer-Controlled Inspection ===
Digital manufacturing also includes equipment used to measure and verify components.

* Coordinate Measuring Machines (CMMs): Measure geometric features using a probe and a defined coordinate system.
* Optical inspection systems: Use cameras or optical sensors to measure features without necessarily contacting the component.
* 3D scanning: Captures surface geometry to create a digital representation that can be compared with a CAD model.

Typical applications: Quality control, dimensional verification, reverse engineering, and checking manufactured parts against design requirements.

CNC

2026-10-28T20:05:32Z

Vcarr020: Created page

== CNC Basics - What is CNC? ==

=== Computer-Controlled Manufacturing ===
Computer-controlled manufacturing uses digital instructions to control equipment that produces, modifies, or inspects physical components.These instructions may control the movement of a cutting tool, the deposition of material, the path of a laser, or the operation of an automated production process.Computer-controlled manufacturing connects digital design to physical production. It enables repeatable processes, complex geometries, and automation across a wide range of materials and industries.

'''Computer Numerical Control (CNC)''' is one category of computer-controlled manufacturing. Other examples include 3D printing, laser cutting, and automated inspection.

=== How Does It Work? ===
Most computer-controlled manufacturing processes follow a similar workflow.

# Design: A component is designed using Computer-Aided Design (CAD) software or another suitable digital design tool.
# Process planning: A manufacturing method is selected based on the part geometry, material, accuracy requirements, and production volume.
# Manufacturing preparation: Software converts the design into instructions appropriate for the selected process. These may define toolpaths, cutting parameters, print layers, or laser movements.
# Simulation and verification: Where supported, the planned process is checked for errors, collisions, or other potential problems.
# Setup: The material is prepared, the workpiece or build area is established, and the required equipment settings are configured.
# Production: The equipment executes the programmed instructions to manufacture the component.
# Post-processing and inspection: The part may require support removal, finishing, heat treatment, cleaning, or dimensional inspection.

The exact workflow depends on the manufacturing method. For example, CNC milling generally removes material from a solid workpiece, while 3D printing builds a component by adding material.

== Common Types CNC Manufacturing ==

=== Subtractive Manufacturing ===
Subtractive manufacturing produces a component by removing material from a larger piece of stock.

* CNC milling: Uses a rotating cutting tool to produce pockets, slots, holes, and flat or contoured surfaces.
* CNC turning: Removes material from a rotating workpiece to produce cylindrical features such as shafts and bushings.
* CNC grinding: Uses an abrasive process to achieve specific dimensional and surface-finish requirements.
* CNC routing: Machines materials such as wood, plastics, composites, and suitable metals using programmed cutting paths.

Typical applications: Precision components, brackets, shafts, housings, fixtures, and mechanical assemblies.

=== Additive Manufacturing ===
Additive manufacturing produces components by adding material according to a digital model, typically in successive layers. [[Digital technologies/3D printing/Tutorial: How to 3D print|3D printing]] is the most familiar example of additive manufacturing.

Common methods include:

* Fused Filament Fabrication (FFF/FDM): Melts and deposits thermoplastic filament to build a component layer by layer.
* Resin printing (SLA/MSLA): Uses light to selectively cure liquid photopolymer resin.
* Powder Bed Fusion: Uses a heat source, such as a laser, to fuse selected regions of a powder bed. Depending on the process, it can manufacture metal or polymer components.
* Material Jetting: Deposits droplets of material that are subsequently solidified or cured.

Typical applications: Prototypes, custom housings, jigs and fixtures, complex internal geometries, lightweight structures, and low-volume production.

Key consideration: Additive manufacturing can produce shapes that are difficult to machine, but parts may require support structures, post-processing, and careful consideration of material properties and build orientation.

=== Computer-Controlled Cutting ===
These processes separate material along programmed paths without relying on conventional milling or turning.

* [[Digital technologies/Laser cutting/Tutorial: How to Laser Cut|Laser cutting]]: Uses a focused laser to cut suitable sheet materials.
* Waterjet cutting: Uses a high-pressure water jet, sometimes mixed with abrasive particles, to cut a wide range of materials.
* Plasma cutting: Uses a high-temperature plasma jet to cut electrically conductive materials, particularly metals.

Typical applications: Sheet-metal parts, flat brackets, panels, plate components, and cut profiles for fabrication.

Key consideration: These processes are particularly useful for producing two-dimensional profiles from sheet or plate stock. Their suitability depends on material thickness, edge quality, dimensional requirements, and the geometry required.

=== Electrical Discharge Machining (EDM) ===
EDM removes electrically conductive material through controlled electrical discharges.

Common forms include wire EDM, which cuts profiles using a continuously moving wire electrode, and sinker EDM, which produces cavities using a shaped electrode.

Typical applications: Intricate profiles, precision tooling, moulds, and features in electrically conductive materials that are difficult to machine using conventional cutting tools.

Key consideration: EDM is not a general-purpose process for every material. It requires electrically conductive workpieces and is often selected for specific geometry or precision requirements.

=== Computer-Controlled Inspection ===
Digital manufacturing also includes equipment used to measure and verify components.

* Coordinate Measuring Machines (CMMs): Measure geometric features using a probe and a defined coordinate system.
* Optical inspection systems: Use cameras or optical sensors to measure features without necessarily contacting the component.
* 3D scanning: Captures surface geometry to create a digital representation that can be compared with a CAD model.

Typical applications: Quality control, dimensional verification, reverse engineering, and checking manufactured parts against design requirements.