Grid List Results: 104 items
Ultrasonic machining (USM) article icon

Science, Maths & Technology

Ultrasonic machining (USM)

The workpiece is held in a tank of slurry containing abrasive particles, the slurry is injected into the space between a vibrating tool and stationary workpiece. Material is abraded away until a mirror image of the tool is cut into the workpiece.

Article
10 mins
Abrasive jet cutting article icon

Science, Maths & Technology

Abrasive jet cutting

A high pressure, high velocity jet of water (or air), mixed with dry abrasive particles to form a slurry, is forced through a nozzle in the cutting head. The jet impinges on the surface of the workpiece, eroding away material.

Article
10 mins
Water jet cutting (Hydrodynamic cutting) article icon

Science, Maths & Technology

Water jet cutting (Hydrodynamic cutting)

High velocity, high pressure water jets (or a mixture of water and an abrasive) are used to cut into the surface of the workpiece. Used mainly on non-metallic thin sheet material.

Article
10 mins
Creep feed grinding article icon

Science, Maths & Technology

Creep feed grinding

Effectively a milling process, as high volumes of material can be removed, producing deeper cuts, in a single pass of the grinding wheel. Final surface finishing of the workpiece is provided during a second pass of the grinding wheel, which has by then been dressed by a small diamond roller. Chips of workpiece material are washed away by a jet ...

Article
10 mins
Centreless grinding article icon

Science, Maths & Technology

Centreless grinding

Differs from the conventional grinding process in that the workpiece is held between two grinding wheels, rotating in the same direction at different speeds, and a work rest platform. The speed of the grinding wheels rotation relative to each other determines the rate at which material is removed.

Article
10 mins
Grinding article icon

Science, Maths & Technology

Grinding

A mechanical process using a rotating grinding wheel made from abrasive material containing small particles of grit ranging from fine to coarse. The wheel revolves around a central axis, making contact with the surface of the workpiece, while the particles act as cutting tools that cut chips from the material.

Article
10 mins
Multipoint cutting (rotational) article icon

Science, Maths & Technology

Multipoint cutting (rotational)

A mechanical machining process, where a tool with more than one sharp cutting edge rotates on a horizontal or vertical axis, to remove material from the workpiece.

Article
10 mins
Multipoint cutting (translational) article icon

Science, Maths & Technology

Multipoint cutting (translational)

A mechanical machining process, where a tool with more than one sharp cutting edge (‘teeth’) moves horizontally or vertically to remove material from the workpiece.

Article
10 mins
Single point cutting article icon

Science, Maths & Technology

Single point cutting

A mechanical machining process where a tool with a single sharp cutting edge is used to remove material from the workpiece.

Article
5 mins
Flame cutting article icon

Science, Maths & Technology

Flame cutting

A stream of high purity oxygen is directed onto a small pre-heated area on the surface of the workpiece, igniting the metal and oxidising it, removing material and creating the kerf.

Article
5 mins
Plasma arc cutting article icon

Science, Maths & Technology

Plasma arc cutting

An electrical arc is formed between the plasma torch (-ve) and the workpiece (+ve). Plasma passes through a constricting fine bore nozzle, creating a high velocity, high-temperature jet of plasma that transfers the arc to the workpiece, melting away material to form the kerf.

Article
5 mins
Laser cutting article icon

Science, Maths & Technology

Laser cutting

Mainly used for precision cutting of materials with a low melting point. A finely focused laser beam locally heats the surface of the workpiece, vaporising and melting away material. Residue material is removed by induced vapor pressure, or by gas jets (gas-assisted laser cutting).

Article
5 mins