Manufacturing manual

Useful terms to know before diving into this issue.

December 9, 2024

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Prototype Fabrication machinist Marshall Maes operates a multi-axis CNC machine. Credit to: Los Alamos National Laboratory
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Manufacturing: The process of converting raw material to a finished part through labor, machines, tools, and chemistry.

Advanced manufacturing: Innovative production technologies that improve products and processes, often involving automation, robotics, and smart systems. 

Additive manufacturing: The process of creating objects by adding material layer by layer, often using 3D-printing technologies.

Subtractive manufacturing: The process of creating objects by removing material from a solid block through machining processes such as milling or turning.

Machining: A type of subtractive manufacturing that involves removing portions of a larger piece of raw material to create a desired shape or part. Machining uses tools such as lathes, mills, routers, grinders, and drill presses.

Fabricating: The process of assembling, cutting, and shaping materials into a finished product.

 

Drill Press
An employee operates a drill press.

Techniques

Casting: The process of pouring molten material into a mold to form a specific shape upon solidification.

Computer numerical control (CNC) machining: A manufacturing process that uses pre-programmed software to control the movement of tools and machinery to shape materials.

Electron-beam additive manufacturing (EBAM): An additive manufacturing process using an electron beam to melt metal powder or wire into a desired shape.Multi-axis 3D printing: A 3D printer that uses a robotic arm (rather than a frame structure) to move a tool head, allowing the fabrication of complex shapes.

Forming: A manufacturing process where a material's shape is altered by applying pressure or force without removing any material.

Forging: The process of heating a piece of metal and then beating or hammering it into a desired shape. 

Turning: A machining process that uses a cutting tool to remove material from a rotating workpiece to create cylindrical or other desired shapes.

Welding: Processes that join metals by melting and fusing them using different methods.

Wire electrical discharge machining: A manufacturing process that uses electricity traveling through a thin wire to cut intricate shapes in conductive materials.

Pf Tools
This Mitsubishi wire electrical discharge machine has just completed a cut. The machine uses an energized brass wire to cut through a conductive materials, such as brass, aluminum, steel, copper, graphite, titanium, and tungsten. "We like to say we use 'controlled lightning' to cut parts to within .0001 tolerances," explains engineering technologist Matt Hinde. "They are very accurate machines."

Tools

Lathe: A machining tool that rotates a piece of raw material around a stationary cutting tool to create a desired shape. 

Mill: A machining tool that rotates a cutting tool around a stationary piece of raw material to create a desired shape.

Router: A machining tool similar to a mill that’s used to carve or engrave a piece of raw material.

Grinder: A machining tool that uses an abrasive rotating wheel to wear down the surface of an object.

Drill press: A stationary machining tool that drills holes in objects. 

CNC laser cutter: A CNC machine used to precisely cut materials.

CNC press brake: A CNC machine used to bend sheet metal with high precision.

Coordinate-measuring machine (CMM): A device that measures the physical geometrical characteristics of an object.

Multi-axis 3D printer: A 3D printer that uses a robotic arm (rather than a frame structure) to move a tool head, allowing the fabrication of complex shapes. ★

Pf Inspection
A coordinate-measuring machine.

 

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