A mandrel (pronounced /ˈmændrɪl/, and also spelled mandril; in American English also called an arbor) is either an object used to shape machined work; a tool component that grips or clamps materials to be machined; or a tool component that can be used to grip other moving tool components. This chart shows concisely the most common way in which the International Phonetic Alphabet (IPA) is applied to represent the English language. ... For other uses, see American English (disambiguation). ... A modern hammer is directly descended from ancient hand tools A tool or device is a piece of equipment which typically provides a mechanical advantage in accomplishing a physical task. ... Manufacturing is the application of tools and a processing medium to the transformation of raw materials into finished goods for sale. ... material is the substance or matter from which something is or can be made, or also items needed for doing or creating something. ...

An example of one type of mandrel is a shaped bar of metal inserted in, or next to, an item to be machined or bent in a certain pattern. Exhaust pipes in automobiles are frequently bent using a mandrel during manufacture. The mandrel allows the exhaust pipes to be bent into smooth curves without undesirable creasing, kinking, or collapsing. Molten glass may be shaped in this way as well. Another example of this type of mandrel is found in jewelry manufacturing, where ring and bracelet mandrels are used to shape metal into a desired size and shape, using a tiny hammer to beat the metal against the mandrel. Hot metal work from a blacksmith In chemistry, a metal (Greek: Metallon) is an element that readily loses electrons to form positive ions (cations) and has metallic bonds between metal atoms. ... A pattern is a form, template, or model (or, more abstractly, a set of rules) which can be used to make or to generate things or parts of a thing, especially if the things that are generated have enough in common for the underlying pattern to be inferred or discerned... An exhaust pipe is usually a pipe used to guide waste exhaust gases away from a controlled combustion inside an engine or stove. ... Karl Benzs Velo (vélo means bicycle in French) model (1894) - entered into the first automobile race 2005 MINI Cooper S. An automobile (also motor car or simply car) is a wheeled passenger vehicle that carries its own motor. ... Manufacturing is the transformation of raw materials into finished goods for sale, or intermediate processes involving the production or finishing of semi-manufactures. ... In mathematics, the concept of a curve tries to capture the intuitive idea of a geometrical one-dimensional and continuous object. ... Physics In physics, melting is the process of heating a solid substance to a point (called melting point) where it turns liquid. ... Glass can be made transparent and flat, or into other shapes and colors as shown in this sphere from the Verrerie of Brehat in Brittany. ... Jewelry (the American spelling; spelled jewellery in Commonwealth English) consists of ornamental devices worn by persons, typically made with gems and precious metals. ... A finger ring is a metal band worn as an ornament around a finger; it is the most common current meaning of the word ring. ... Bead and wire styled Bracelet. ... Shape (OE. sceap Eng. ... A claw hammer For other uses, see Hammer (disambiguation). ...

Another type of mandrel is the clamp that a lathe uses to hold pieces of wood, metal or plastic to be machined as they are turned. In this way, rods can be threaded, furniture legs are turned to have beautiful patterns, and irregularly-shaped objects can be given a cylindrical or round shape. A clamp is a fastening device to hold or secure objects tightly together to prevent movement or separation through the application of inward pressure. ... Conventional metalworking lathe In woodturning, metalworking, metal spinning, and glassworking, a lathe is a machine tool which spins a block of material so that when abrasive, cutting, or deformation tools are applied to the block, it can be shaped to produce an object which has rotational symmetry about an axis... Trunks A tree trunk as found at the Veluwe, The Netherlands Wood is a solid material derived from woody plants, notably trees but also shrubs. ... This article or section does not cite any references or sources. ... In geometry, a Rod is a 3-dimensional, solid (filled) cylinder. ... Look up furniture in Wiktionary, the free dictionary. ... A pattern is a form, template, or model (or, more abstractly, a set of rules) which can be used to make or to generate things or parts of a thing, especially if the things that are generated have enough in common for the underlying pattern to be inferred or discerned... Look up round in Wiktionary, the free dictionary. ...

The third type of mandrel discussed here is that which is used to hold circular saw blades, buffing wheels (used for polishing), and sanding discs onto drills, circular saws, and similar power tools. A mandrel of this type generally consists of a cylinder, threaded on one end, with a washer brazed onto the threaded end and an accompanying screw and second washer which are used to clamp the circular saw blade, sanding media, or other rotary tool onto the mandrel. Portable saw A saw is a tool for cutting wood or other material, consisting of a serrated blade (a blade with the cutting edge dentated or toothed) and worked either by hand or by steam, water, electric or other power. ... A blade is the flat part of a tool or weapon that normally has a cutting edge and/or pointed end typically made of a metal, most recently, steel intentionally used to cut, stab, slice, throw, thrust, or strike an animate or inainimate object. ... The force bearing on the axle has an eccentricity e with the point of contact to the rolling surface and exerts a moment about the contact point. ... A child using an electric drill with a screwdriver bit mounted in the chuck. ... A right circular cylinder An elliptic cylinder In mathematics, a cylinder is a quadric surface, with the following equation in Cartesian coordinates: This equation is for an elliptic cylinder, a generalization of the ordinary, circular cylinder (a = b). ... the term washer may refer to one of the following. ... Screws come in a variety of shapes and sizes for different purposes. ... See: Rotary engine Rotary International Rotary milking shed rotary intersections This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ...

While most mandrels are driven by direct connection to an electric motor or engine, other mandrels are driven by attachment to a bearing-supported, pulley-driven shaft. Rotating magnetic field as a sum of magnetic vectors from 3 phase coils An electric motor converts electrical energy into mechanical energy. ... This article or section does not cite any references or sources. ... Pulleys on a ship. ...

In fiber optics, an optical fiber is often wrapped around a mandrel to alter the light travelling in the fiber. Fiber Optic strands An optical fiber in American English or fibre in British English is a transparent thin fiber for transmitting light. ... Mandrel wrapping: In multimode fiber optics, a technique used to modify the modal distribution of a propagating optical signal. ...

In the production of steel core used for flexible drives, the centre wire upon which the subsequent layers are wound is referred to as a Mandrel. This 'centre wire' may itself be composed of either a single wire or layers depending on the sizing of the finished product.

History

Mandrels are not recent inventions. Metal machining utilizing the spinning process has been recorded as far back as ancient Egyptian times. In metal spinning, a wood or metal spinning mandrel is used, the form of which corresponds with the internal contour of the part to be produced. This method securely clamps the raw material and allows for accurate machining into the desired final form. Since the material is clamped internally, there is no interference to the operator from the lathe/mandrel assembly during production. In music, an invention is a short composition with two or three part counterpoint. ... Metal Spinning is a process by which circles of metal are shaped over mandrels (also called forms) while mounted on a spinning lathe by the application of levered force with various tools. ... Process (lat. ... Khafres Pyramid (4th dynasty) and Great Sphinx of Giza (c. ... It has been suggested that this article be split into multiple articles accessible from a disambiguation page. ... ... The Comet Nucleus Tour (CONTOUR) was a Discovery-class space mission. ... Interference of two circular waves - Wavelength (decreasing bottom to top) and Wave centers distance (increasing to the right). ...

Also, the traversing mandrel was introduced around the year 1700 AD, and consisted of designing a lathe mandrel that would be able to slide axially in its bearings under the control of the operator, so that components having short lengths of thread could be produced, such as screws. The traversing mandrel was primarily employed by clockmakers and ornamental turners during this era. Eventually this device was superseded by a mandrel-driven device called a leadscrew, which utilizes a train of gears that can be altered as required for the turning application. For other article subjects named transport see transport (disambiguation). ... Conventional metalworking lathe In woodturning, metalworking, metal spinning, and glassworking, a lathe is a machine tool which spins a block of material so that when abrasive, cutting, or deformation tools are applied to the block, it can be shaped to produce an object which has rotational symmetry about an axis... Slide could be related to any of these. ... Bearing is the following: Often, bearing is the state of having something as a quality, characteristic, or permanent attribute. ... Look up Control in Wiktionary, the free dictionary. ... In mathematics, an operator is a function that performs some sort of operation on a number, variable, or function. ... Screw thread, used to convert torque into the linear force in the flood gate. ... Screws come in a variety of shapes and sizes for different purposes. ... An ornamental is a plant variety that is grown for its beauty (in its end use), rather than commercial or other value. ... Era may refer to: Era, a long period of history ERA Real Estate, also known as Electronic Realty Associates Inc. ... Look up device in Wiktionary, the free dictionary. ... A leadscrew is a threaded shaft that is used in machines to create linear motion. ... It has been suggested that Local trains be merged into this article or section. ... Spur gears found on a piece of farm equipment A gear is a wheel with teeth around its circumference, the purpose of the teeth being to mesh with similar teeth on another mechanical device -- possibly another gear wheel -- so that force can be transmitted between the two devices in a...

Images

Rotary tool mandrel with an accompanying grinding wheel.

Pulley-driven mandrel used to hold lawn tractor cutting blades.

Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ...

External links

Historical pictures of mandrels, lathes and leadscrews: http://www.historicgames.com/lathes/special.html

References

The Ornamental Turning Center: http://www.turners.org/Articles/lathehistory.html

See also

• Operation Mandrel

Operation Mandrel was a series of forty-three nuclear test explosions. ...

Metalworking:
Machine tooling: Image File history File links Blacksmith-hammer-anvil-50x50. ... Turned chess pieces Metalworking is the craft and practice of working with metals to create structures or machine parts. ...	Angle plate | Chuck | Collet | Fixture | Indexing head | Lathe center | Machine taper | Magnetic base | Mandrel | Rotary table | Wiggler Adjustable angle plate Fixed angle plate An angle plate is a work holding device used as a fixture in metalworking. ... A Chuck is a specialised type of clamp used to hold rotating tools or materials. ... A collet is a holding device that forms a collar around the object to be held and exerts a strong clamping force on the object when it is tightened. ... Indexing head and tailstock set up on a milling machines table An indexing head is a specialized tool that allows a work piece to be rotated to any angle angle or circular division. ... A lathe center (or center) is a tool that has been ground to an included angle of 60 ° and is used to accurately position a workpiece about its axis. ... Machine tool operators must be able to install or remove cutting bits or other accessories quickly and easily from the machine tools powered rotating spindle. ... Magnetic base as used in the engineering metaltrades. ... 10 inch, manual rotary table A rotary table is a precision work positioning device used in metalworking. ... Wiggler Set of wigglers A wiggler, center finder or sticky pin refers to a tool used in the rotating spindle of a machine such as mill or drill. ...
Metalworking topics:   Turned chess pieces Metalworking is the craft and practice of working with metals to create structures or machine parts. ...	Casting | CNC | Cutting tools | Drilling and threading | Fabrication | Finishing | Grinding | Jewellery | Lathe (tool) | Machining | Machine tooling | Measuring | Metalworking | Hand tools | Metallurgy | Milling | Occupations | Press tools | Smithing | Terminology | Welding Casting may be used to create artistic sculptures Casting is a manufacturing process by which a molten material such as metal or plastic is introduced into a mold, allowed to solidify within the mold, and then ejected or broken out to make a fabricated part. ... A CNC Turning Center A CNC Milling Machine The abbreviation CNC stands for computer numerical control, and refers specifically to a computer controller that reads G-code instructions and drives the machine tool, a powered mechanical device typically used to fabricate metal components by the selective removal of metal. ... a Cutting Tool, in the context of Metalworking is any tool that is used to remove metal from the workpiece by means of shear deformation. ... Drilling is the process of using a drill bit in a drill to produce holes. ... A typical steel fabrication shop Fabrication, when used as an industrial term, applies to the building of machines and structures by cutting, shaping and assembling components made from raw materials. ... Metalworking finishing is the activity of making things out of metal in a skillful manner. ... Rotating abrasive wheel on a bench grinder. ... Amber jewellery in the form of pendants. ... Conventional metalworking lathe In woodturning, metalworking, metal spinning, and glassworking, a lathe is a machine tool which spins a block of material so that when abrasive, cutting, or deformation tools are applied to the block, it can be shaped to produce an object which has rotational symmetry about an axis... A lathe is a common tool used in machining. ... A machine tool is a powered mechanical device, typically used to fabricate metal components of machines by the selective removal of metal. ... The examples and perspective in this article or section may not represent a worldwide view. ... Turned chess pieces Metalworking is the craft and practice of working with metals to create structures or machine parts. ... Metalworking hand tools are hand tools that are used in the metalworking field. ... Metallurgy is a domain of materials science and of materials engineering that studies the physical and chemical behavior of metallic elements, their intermetallic compounds, and their mixtures, which are called alloys. ... Endmills for a milling machine. ... It has been suggested that this article or section be merged with Smith (metalwork). ... Power press with a fixed barrier guard A press, or a machine press is a tool used to work metal (typically steel) by changing its shape and internal structure. ... A smith, or metalsmith, is a person involved in the shaping of metal objects. ... This article needs to be wikified. ... Welding is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. ...