FACTOID # 20: Statistically, Delaware bears more cost of the US Military than any other state.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
 
WHAT'S NEW
RELATED ARTICLES
People who viewed "Lathe" also viewed:
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Lathe
A lathe from 1911 showing component parts. a = bed, b = toolrest, c = headstock, d = geartrain to drive automatic screw shaft, e = pullies for belt drive from an external power source, f = spindle, g = tailstock. h = automatic screw shaft.
A lathe from 1911 showing component parts.
a = bed, b = toolrest, c = headstock, d = geartrain to drive automatic screw shaft, e = pullies for belt drive from an external power source, f = spindle, g = tailstock. h = automatic screw shaft.

A lathe (pronounced /ˈleɪð/) is a machine tool which spins a block of material to perform various operations such as cutting, sanding, knurling, drilling, or deformation with tools that are applied to the workpiece to create an object which has symmetry about an axis of rotation. Lathe may refer to: Look up lathe in Wiktionary, the free dictionary. ... This article is about building materials. ... Image File history File links Lathe. ... Image File history File links Lathe. ... A machine tool is a powered mechanical device, typically used to fabricate metal components of machines by machining, which is the selective removal of metal. ... For other uses, including articles on self-injury, see Cutting (disambiguation). ... sheets of sandpaper Sandpaper is a form of paper where an abrasive material has been fixed to its surface; it is part of the coated abrasives family of abrasive products. ... Close-up shot of a diamond-pattern knurling on a cylindric work piece. ... For drilling in the earth, see Borehole. ... In engineering mechanics, deformation is a change in shape due to an applied force. ... The triskelion appearing on the Isle of Man flag. ... The axis of rotation of a rotating body is a line such that the distance between any point on the line and any point of the body remains constant under the rotation. ...


Lathes are used in woodturning, metalworking, metal spinning, and glassworking. Lathes can be used to shape pottery, the best-known design being the potter's wheel. Most suitably equipped metalworking lathes can also be used to produce most solids of revolution, plane surfaces and screw threads or helices. Ornamental lathes can produce three-dimensional solids of incredible complexity. The material is held in place by either one or two centers, at least one of which can be moved horizontally to accommodate varying material lengths. Examples of objects that can be produced on a lathe include candlestick holders, cue sticks, table legs, bowls, baseball bats, crankshafts and camshafts. This article or section is not written in the formal tone expected of an encyclopedia article. ... Turned chess pieces Metalworking is the craft and practice of working with metals to create structures or machine parts. ... 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. ... Unfired green ware pottery on a traditional drying rack at Conner Prairie living history museum. ... Classic potters kick-wheel at Erfurt, Germany The potters wheel is a machine used in the shaping of round ceramic wares. ... In mathematics, engineering, and manufacturing, a solid of revolution is a solid figure obtained by rotating a plane figure around some straight line (the axis) that lies on the same plane. ... This article should be split into multiple articles accessible from a disambiguation page. ... A cue stick A cue stick or simply cue, is an item of sporting equipment essential to the games of billiards, pool and snooker. ... For the UK band, see Furniture (band). ... A salad in a bowl sits next to a small pie in a pie dish Chawan, drinking bowls used in a Japanese tea ceremony Bowls used as construction tools in contemporary India. ... Four historically significant baseball bats showcased in the National Baseball Hall of Fames traveling exhibit Baseball As America. ... Crankshaft (red), pistons (gray) in their cylinders (blue), and flywheel (black) Continental engine marine crankshafts, 1942 Components of a typical, four stroke cycle, DOHC piston engine. ... For the fictional characters of the same name, see Camshaft (Transformers). ...

Contents

History

The lathe is an ancient tool, dating at least to the Egyptians and, known and used in Assyria, Greece, the Roman and Byzantine Empires.

A turned wood bowl with natural edges
A turned wood bowl with natural edges

The origin of turning dates to around 1300BC when the Egyptians first developed a two-person lathe. One person would turn the wood work piece with a rope while the other used a sharp tool to cut shapes in the wood. The Romans improved the Egyptian design with the addition of a turning bow. Early bow lathes were also developed and used in Germany, France and Britain. In the Middle Ages a pedal replaced hand-operated turning, freeing both the craftsman's hands to hold the woodturning tools. The pedal was usually connected to a pole, often a straight-grained sapling. The system today is called the "spring pole" lathe (see Polelathe). Spring pole lathes were in common use into the early 20th Century. A two-person lathe, called a "great lathe", allowed a piece to turn continuously (like today's power lathes). A master would cut the wood while an apprentice turned the crank.[1] Image File history File links Metadata Size of this preview: 800 × 532 pixelsFull resolution (3008 × 2000 pixel, file size: 1. ... Image File history File links Metadata Size of this preview: 800 × 532 pixelsFull resolution (3008 × 2000 pixel, file size: 1. ... Ancient Rome was a civilization that grew from a small agricultural community founded on the Italian Peninsula circa the 9th century BC to a massive empire straddling the Mediterranean Sea. ... The Middle Ages formed the middle period in a traditional schematic division of European history into three ages: the classical civilization of Antiquity, the Middle Ages, and modern times, beginning with the Renaissance. ... A pole lathe uses a long pole as a return spring for a treadle. ...


During the industrial revolution the lathe was motorized, allowing wooden turned items to be created in less time and allowing the working of metal on a lathe. The motor also produced a greater rotational speed, making it easier to quickly produce high quality work. Today most commercial lathes are computer-operated allowing for mass-production that can be created with accurate precision and without the cost of employing craftsmen. A Watt steam engine, the steam engine that propelled the Industrial Revolution in Britain and the world. ... This article is about the machine. ... Craftsman is an artisan who practices a handicraft or trade; a style of architecture and furniture arising from the Arts and Crafts movement; a military rank within the Royal Electrical and Mechanical Engineers, equivalent to a private; and a brand of tools. ...


Description

Parts of a lathe

Parts of a wood lathe
Parts of a wood lathe

A lathe may or may not have a stand (or legs), which sits on the floor and elevates the lathe bed to a working height. Some lathes are small and sit on a workbench or table, and do not have a stand. Image File history File links This is a lossless scalable vector image. ... Image File history File links This is a lossless scalable vector image. ...


All lathes have a "bed", which is (almost always) a horizontal beam (although some CNC lathes have a vertical beam for bed to ensure that swarf, or chips, falls free of the bed). For other uses, see CNC (disambiguation). ...


At one end of the bed (almost always the left, as the operator faces the lathe) is a "headstock". The headstock contains high-precision spinning bearings.


Rotating within the bearings is a horizontal axle, with an axis parallel to the bed, called the "spindle". Spindles are often hollow, and have exterior threads and/or an interior Morse taper on the "inboard" (i.e., facing to the right / towards the bed) by which accessories which hold the workpiece may be mounted to the spindle. Spindles may also have exterior threads and/or an interior taper at their "outboard" (i.e., facing away from the bed) end, and/or may have a handwheel or other accessory mechanism on their outboard end. Spindles are powered, and impart motion to the workpiece. In the design of machine tools there is a need for users to be able to quickly and easily install or remove particular cutting bits or other accessories from the powered rotating spindle of the machine tool. ...


The spindle is driven, either by foot power from a treadle and flywheel or by a belt drive to a power source. In some modern lathes this power source is an integral electric motor, often either in the headstock, to the left of the headstock, or beneath the headstock, concealed in the stand.


The counterpoint to the headstock is the tailstock, sometimes referred to as the loose head, as it can be positioned at any convenient point on the bed, by undoing a locking nut, sliding it to the required area, and then relocking it. The tailstock contains a barrel which does not rotate, but can slide in and out parallel to the axis of the bed, and directly in line with the headstock spindle. The barrel is hollow, and usually contains a taper to facilitate the gripping of various type of tooling. Its most common uses are to hold a hardened steel centre, which is used to support long thin shafts while turning, or to hold drill bits for drilling axial holes in the work piece. Many other uses are possible.


Metalworking lathes have a "cross slide", which is a flat piece that sits crosswise on the bed, and can be cranked at right angles to the bed. Sitting atop the cross slide is a toolpost, which holds a cutting tool which removes material from the workpiece. There may or may not be a leadscrew, which moves the cross slide along the bed. A leadscrew is a screw specialized for the purpose of translating rotational to linear motion. ...


Woodturning and metal spinning lathes do not have cross slides, but have "banjos", which are flat pieces that sit crosswise on the bed. The position of a banjo can be adjusted by hand; no gearing is involved. Ascending vertically from the banjo is a tool post, at the top of which is a horizontal "tool rest". In woodturning, hand tools are braced against the tool rest and levered into the workpiece. In metal spinning, the further pin ascends vertically from the tool rest, and serves as a fulcrum against which tools may be levered into the workpiece.


Accessories

Unless a workpiece has a taper machined onto it which perfectly matches the internal taper in the spindle, or has threads which perfectly match the external threads on the spindle (two things which almost never happen), an accessory must be used to mount a workpiece to the spindle.


A workpiece may be bolted or screwed to a faceplate, a large flat disk that mounts to the spindle. Alternatively faceplate dogs may be used to secure the work to the faceplate. A faceplate is the basic workholding accessory for a wood or metal turning lathe. ...


A workpiece may be clamped in a three- or four-jaw chuck, which mounts directly to the spindle or mounted on a mandrel. A Chuck is a specialised type of clamp used to hold rotating tools or materials. ... A mandrel (pronounced , 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. ...


In precision work (and in some classes of repetition work), cylindrical workpieces are invariably held in a collet inserted into the spindle and secured either by a drawbar, or by a collet closing cap on the spindle. Suitable collets may also be used to mount square or hexagonal workpieces. In precision toolmaking work such collets are usually of the draw in variety, where as collet is tightened the workpiece moves slightly back into the headstock, whereas for most repetition work the dead length variety is preferered as this ensures that the position of the workpiece does not move as the collet is tightened, so the workpiece can be set in the lathe to a fixed position and it will not move on tightening the collet. 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. ...


A soft workpiece (wooden) may be pinched between centers by using a spur drive at the headstock, which bites into the wood and imparts torque to it. 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. ...

Live center (top) Dead center (bottom)
Live center (top) Dead center (bottom)

A soft dead center is used in the headstock spindle as the work rotates with the centre. Because the centre is soft it can be trued in place before use. The included angle is 60 degrees. Traditionally a hard dead center is used together with suitable lubricant in the tailstock to support the workpiece. In modern practice the dead center is frequently replaced by a live center or (revolving center) as it turns freely with the workpiece usually on ball bearings, reducing the frictional heat, which is especially important at high RPM. A lathe carrier or lathe dog may also be employed when turning between two centers. Image File history File links Download high resolution version (1473x1095, 199 KB) Photograph taken by Glenn McKechnie on the 26th March 2005. ... Image File history File links Download high resolution version (1473x1095, 199 KB) Photograph taken by Glenn McKechnie on the 26th March 2005. ... 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. ... 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. ... 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. ... A carrier ( or lathe dog) is a device that clamps around the workpiece and allows the rotary motion of the machines spindle to be transmitted to the workpiece. ...


In woodturning, one subtype of a live center is a cup center, which is a cone of metal surrounded by an annular ring of metal that decreases the chances of the workpiece splitting. 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. ...


A circular metal plate with even spaced holes around the periphery, mounted to the spindle, is called an "index plate". It can be used to rotate the spindle a precise number of degrees, then lock it in place, facilitating repeated auxiliary operations done to the workpiece.


Modes of use

When a workpiece is fixed between the headstock and the tailstock, it is said to be "between centers". When a workpiece is supported at both ends, it is more stable, and more force may be applied to the workpiece, via tools, at a right angle to the axis of rotation, without fear that the workpiece may break loose.


When a workpiece is fixed only to the spindle at the headstock end, the work is said to be "face work". When a workpiece is supported in this manner, less force may be applied to the workpiece, via tools, at a right angle to the axis of rotation, lest the workpiece rip free. Thus, most work must be done axially, towards the headstock, or at right angles, but gently.


When a workpiece is mounted with a certain axis of rotation, worked, then remounted with a new axis of rotation, this is referred to as "eccentric turning" or "multi axis turning". The result is that various cross sections of the workpiece are rotationally symmetric, but the workpiece as a whole is not rotationally symmetric. This technique is used for camshafts, various types of chair legs, etc.


Varieties

The smallest lathes are "jewelers lathes" or "watchmaker lathes", which are small enough that they may be held in one hand. Although the workpieces machined on a jeweler's lathes are metal, jeweler's lathes differ from all other metal working lathes in that the cutting tools (called "gravers") are hand held and supported by a T-rest, not fixed to a cross slide. The work is usually held in a collet. Two spindle bore sizes to receive the collets are common, namely 6 mm and 8 mm. Two patterns of bed are common: the WW (Webster Whitcomb) bed, a truncated triangular prism (found only on 8 mm watchmakers lathes); and the continental D-style bar bed (used on both 6 mm and 8 mm lathes by firms such as Lorch and Star). Other bed designs have been used, such a triangular prism on some Boley 6.5 mm lathes, and a V-edged bed on IME's 8 mm lathes.


Lathes that sit on a bench or table are called "bench lathes".


Lathes that do not have additional integral features for repetitive production, but rather are used for individual part production or modification as the primary role, are called "engine lathes".


Lathes with a very large spindle bore and a chuck on both ends of the spindle are called "oil field lathes."


Fully automatic mechanical lathes, employing cams and gear trains for controlled movement, are called screw machines. General Brown & Sharpe Single Spindle Screw Machine. ...


Lathes that are controlled by a computer are CNC lathes. Center lathe with DRO and chuck guard. ...


Lathes with the spindle mounted in a vertical configuration, instead of horizontal configuration, are called vertical lathes or vertical boring machines. They are used where very large diameters must be turned, and the workpiece (comparatively) is not very long.


A lathe with a cylindrical tailstock that can rotate around a vertical axis, so as to present different facets towards the headstock (and the workpiece) are turret lathes. Center lathe with DRO and chuck guard. ...


A lathe equipped with indexing plates, profile cutters, spiral or helical guides, etc., so as to enable ornamental turning is an ornamental lathe.


Various combinations are possible: e.g. one could have a vertical CNC lathe (such as a CNC VTL), etc.


Lathes can be combined with other machine tools, such as a drill press or vertical milling machine. These are usually referred to as combination lathes. For other uses, see Drill (disambiguation). ... Endmills for a milling machine. ... Center lathe with DRO and chuck guard. ...


Major categories of lathes

Woodworking lathes

A modern woodworking lathe.
A modern woodworking lathe.

Woodworking lathes are the oldest variety. All other varieties are descended from these simple lathes. An adjustable horizontal metal rail - the tool rest - between the material and the operator accommodates the positioning of shaping tools, which are usually hand-held. With wood, it is common practice to press and slide sandpaper against the still-spinning object after shaping to smooth the surface made with the metal shaping tools. A picture, taken by me, of a woodlathe in my basement, which I own. ... A picture, taken by me, of a woodlathe in my basement, which I own. ...


There are also woodworking lathes for making bowls and plates, which have no horizontal metal rail, as the bowl or plate needs only to be held by one side from a metal face plate. Without this rail, there is very little restriction to the width of the piece being turned. Further detail can be found on the woodturning page. This article or section is not written in the formal tone expected of an encyclopedia article. ...


Metalworking lathes

A metalworking lathe
A metalworking lathe
Main article: Lathe (metal)

In a metalworking lathe, metal is removed from the workpiece using a hardened cutting tool, which is usually fixed to a solid moveable mounting called the "toolpost", which is then moved against the workpiece using handwheels and/or computer controlled motors. A Lathe for Turning Metal From US Army training publication TC 9-524. ... A Lathe for Turning Metal From US Army training publication TC 9-524. ... Center lathe with DRO and chuck guard. ... Center lathe with DRO and chuck guard. ... A tool bit generally refers to a plain High Speed Steel (HSS) tool. ...


The toolpost is operated by leadscrews that can accurately position the tool in a variety of planes. The toolpost may be driven manually or automatically to produce the roughing and finishing cuts required to turn the workpiece to the desired shape and dimensions, or for cutting threads, worm gears, etc. Cutting fluid may also be pumped to the cutting site to provide cooling, lubrication and clearing of swarf from the workpiece. Some lathes may be operated under control of a computer for mass production of parts (see "Computer Numerical Control"). Screw thread, used to convert torque into the linear force in the flood gate. ... Worm and worm gear A worm gear, or worm wheel, is a type of gear that engages with a worm to greatly reduce rotational speed, or to allow higher torque to be transmitted. ... Cutting fluid or coolant is liquid used to cool and lubricate the cutting edges of machine tools and the pieces they are shaping. ... Various examples of swarf, including a block of compressed swarf Swarf (or turnings) is shavings and chippings of metal -- the debris or waste resulting from metalworking operations. ... Center lathe with DRO and chuck guard. ... This article is about the machine. ... Mass production is the production of large amounts of standardised products on production lines. ... For other uses, see CNC (disambiguation). ...


Metalworking lathes are commonly provided with a variable ratio gear train to drive the main leadscrew. This enables different pitches of threads to be cut. Some older gear trains are changed manually by using interchangeable gears with various numbers of teeth, while more modern or elaborate lathes have a quick change box to provide commonly used ratios by the operation of a lever.


The threads that can be cut are, in some ways, determined by the pitch of the leadscrew: A lathe with a metric leadscrew will readily cut metric threads (including BA), while one with an imperial leadscrew will readily cut imperial unit based threads such as BSW or UTS (UNF,UNC). This article is about the unit of length. ... British Association or BA screw threads are a largely obsolete set of small screw threads, the largest being 0BA at 6mm diameter. ... This article is about post-1824 imperial units, see also English unit, U.S. customary units or Avoirdupois. ... British Standard Whitworth (BSW) is one of three imperial unit based screw thread standards which use the same bolt heads and nut hexagonal sizes, the other two being British Standard Fine (BSF) and Cycle Engineers Institute (CEI). ... The Unified Thread Standard (UTS) defines a standard thread form and series – along with allowances, tolerances, and designations – for screw threads commonly used in the United States and Canada. ...


The workpiece may be supported between a pair of points called centres, or it may be bolted to a faceplate or held in a chuck. A chuck has movable jaws that can grip the workpiece securely.


Cue lathes

Cue lathes function similar to turning and spinning lathes allowing for a perfectly radially-symmetrical cut for billiard cues. They can also be used to refinish cues that have been worn over the years. A cue stick A cue stick or simply cue, is an item of sporting equipment essential to the games of billiards, pool and snooker. ...


Glassworking lathes

Glassworking lathes are similar in design to other lathes, but differ markedly in how the workpiece is modified. Glassworking lathes slowly rotate a hollow glass vessel over a fixed or variable temperature flame. The source of the flame may be either hand-held, or mounted to a banjo/cross slide that can be moved along the lathe bed. The flame serves to soften the glass being worked, so that the glass in a specific area of the workpiece becomes malleable, and subject to forming either by inflation ("glassblowing"), or by deformation with a heat resistant tool. Such lathes usually have two headstocks with chucks holding the work, arranged so that they both rotate together in unison. Air can be introduced through the headstock chuck spindle for glassblowing. The tools to deform the glass and tubes to blow (inflate) the glass are usually handheld. Glassblowing is the process of forming glass into useful shapes while the glass is in a molten, semi-liquid state. ...


In diamond turning, a computer-controlled lathe with a diamond-tipped tool is used to make precision optical surfaces in glass or other optical materials. Unlike conventional optical grinding, complex aspheric surfaces can be machined easily. Instead of the dovetailed ways used on the tool slide of a metal turning lathe, the ways typically float on air bearings and the position of the tool is measured by optical interferometry to achieve the necessary standard of precision for optical work. The finished work piece usually requires a small amount subsequent polishing by conventional techniques to achieve a finished surface suitably smooth for use in a lens, but the rough grinding time is significantly reduced for complex lenses. Diamond turning is a process of mechanical machining of precision elements using Computer Numerical Control (CNC) lathes equipped with natural or synthetic diamond-tipped cutting elements. ... An aspheric lens or asphere is a lens whose surfaces have a profile that is neither a portion of a sphere nor of a circular cylinder. ...


Metal spinning lathes

Main article: metal spinning

In metal spinning, a disk of sheet metal is held perpendicularly to the main axis of the lathe, and tools with polished tips (spoons) are hand held, but levered by hand against fixed posts, to develop large amounts of torque/pressure that deform the spinning sheet of metal. 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. ... 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. ...


Metal spinning lathes are almost as simple as woodturning lathes (and, at this point, lathes being used for metal spinning almost always are woodworking lathes). Typically, metal spinning lathes require a user-supplied rotationally symmetric mandrel, usually made of wood, which serves as a template onto which the workpiece is moulded (non-symmetric shapes can be done, but it is a very advanced technique). For example, if you want to make a sheet metal bowl, you need a solid chunk of wood in the shape of the bowl; if you want to make a vase, you need a solid template of a vase, etc. Sheets of stainless steel cover the Chrysler Building Thin sheets of gold leaf Sheet metal is simply metal formed into thin and flat pieces. ... Chinese vase A vase with a sunflower pattern A modern designed vase The vase is an open container, often used to hold cut flowers. ...


Given the advent of high speed, high pressure, industrial die forming, metal spinning is less common now than it once was, but still a valuable technique for producing one-off prototypes or small batches where die forming would be uneconomical.


Ornamental turning lathes

The ornamental turning lathe was developed around the same time as the industrial screwcutting lathe in the nineteenth century. It was used not for making practical objects, but for decorative work - ornamental turning. By using accessories such as the horizontal and vertical cutting frames, eccentric chuck and elliptical chuck, solids of extraordinary complexity may be produced by various generative procedures. A special purpose lathe, the Rose engine lathe is also used for ornamental turning, in particular for engine turning, typically in precious metals, for example to decorate pocket watch cases. As well as a wide range of accessories, these lathes usually have complex dividing arrangements to allow the exact rotation of the mandrel. Cutting is usually carried out by rotating cutters, rather than directly by the rotation of the work itself. Because of the difficulty of polishing such work, the materials turned, such as wood or ivory, are usually quite soft, and the cutter has to be exceptionally sharp. The finest ornamental lathes are generally considered to be those made by Holtzapffel around the turn of the 19th century. This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... ChucK is a concurrent, strongly-timed audio programming language for real-time synthesis, composition, and performance, which runs on Mac OS X, Linux, and Windows. ... A rose engine lathe is a specialized kind of ornamental lathe. ...


Reducing Lathe

Many types of lathes can be equipped with accessory components to allow them to reproduce an item: the original item is mounted on one spindle, the blank is mounted on another, and as both turn in synchronized manner, one end of an arm "reads" the original and the other end of the arm "carves" the duplicate.


A reducing lathe is a specialized lathe that is designed with this feature, and which incorporates a mechanism similar to a pantograph, so that when the "reading" end of the arm reads a detail that measures one inch (for example), the cutting end of the arm creates an analogous detail that is (for example) one quarter of an inch (a 4:1 reduction, although given appropriate machinery and appropriate settings, any reduction ratio is possible). This page is about the duplication instrument. ...


Reducing lathes are used in coin-making, where a plaster original (or an epoxy master made from the plaster original, or a copper shelled master made from the plaster original, etc.) is duplicated and reduced on the reducing lathe, generating a master die. Die making is the process of creating a tool for the manufacturing of precisely shaped objects from a stock of workable material. ...


Rotary lathes

A lathe in which softwood logs are turned against a very sharp blade and peeled off in one continuous or semi-continuous roll. Invented by Immanuel Nobel (father of the more famous Alfred Nobel). The first such lathes were set up in the United States in the mid-19th century Immanuel Nobel ( 1801- 1872), Swedish engineer, architect, inventor and industrialist. ...   (October 21, 1833, Stockholm, Sweden—December 10, 1896, Sanremo, Italy) was a Swedish chemist, engineer, innovator, armaments manufacturer and the inventor of dynamite. ...


Watchmaker's lathes

Watchmaker's lathe
Watchmaker's lathe

Watchmakers lathes are delicate but precise metalworking lathes, usually without provision for screwcutting, and are still used by horologists for work such as the turning of balance shafts. A handheld tool called a graver is often used in preference to a slide mounted tool. The original watchmaker's turns was a simple dead-centre lathe with a moveable rest and two loose headstocks. The workpiece would be rotated by a bow, typically of horsehair, wrapped around it.
Image File history File linksMetadata Download high-resolution version (1024x768, 228 KB) Photographer: Paul Anderson (Flickr user wackyvorlon) from Windsor, Ontario, Canada Title: A watchmakers lathe I now own. ... Image File history File linksMetadata Download high-resolution version (1024x768, 228 KB) Photographer: Paul Anderson (Flickr user wackyvorlon) from Windsor, Ontario, Canada Title: A watchmakers lathe I now own. ... This article is about screws and bolts. ... Hand Engraving is the act of carving decorative or functional grooves into a substrate, usually a metal plate, using hand tools such as small chisels called burin or gravers. ... Horsehair refers to hair taken from the mane or tail of horses. ...


Gallery

Examples of lathes



Examples of work produced from a lathe

See also

Wikimedia Commons has media related to:

Diamond turning is a process of mechanical machining of precision elements using Computer Numerical Control (CNC) lathes equipped with natural or synthetic diamond-tipped cutting elements. ... 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. ... Turned chess pieces Metalworking is the craft and practice of working with metals to create structures or machine parts. ... Endmills for a milling machine. ... This article or section is not written in the formal tone expected of an encyclopedia article. ... Artists can use woodworking to create delicate sculptures. ... There are very few or no other articles that link to this one. ... Segmented turning is turning on a lathe where the initial workpiece is composed of multiple glued-together parts. ...

References

In line in text

History

Instruction/Support

Important books

  • Raffan, Richard (2001). Turning Wood With Richard Raffan. Taunton. ISBN 1-56158-417-7. 
  • Holzapffel, Charles (1843-1897). Turning and Mechanical Manipulation Volume V. 
  • Sparey, Lawrence (1947). The Amateur's Lathe. Special Interest Model Books. ISBN 0-85242-288-1. 
  • Marlow, Frank (2008). Machine Shop Essentials: Q & A. Metal Arts Press. ISBN 978-0-9759963-3-1. 

External links

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. ... Electrical Discharge Machine Electrical discharge machining (or EDM) is a machining method primarily used for hard metals or those that would be impossible to machine with traditional techniques. ... Electro Chemical Machining (or ECM) is a method of working extremely hard materials or materials that are difficult to machine cleanly using conventional methods. ... Several types of endmills An endmill is a type of Milling cutter, a cutting tool used in industrial milling applications. ... Hercules fighting the Centaurs , engraving by Sebald Beham Engraving is the practice of incising a design onto a hard, usually flat surface, by cutting grooves into it. ... A hobbing machine is a special form of milling machine that mills gears. ... Center lathe with DRO and chuck guard. ... A machine tool is a powered mechanical device, typically used to fabricate metal components of machines by machining, which is the selective removal of metal. ... A lathe is a common tool used in machining. ... Milling cutters are cutting tools used in milling machines or machining centres. ... Endmills for a milling machine. ... A metalworking planer is a type of metalworking machine tool, analogous to a shaper but larger and with the entire workpiece moving beneath the cutter. ... Shaper tool slide, clapper box and cutting tool A shaper is a machine tool used for shaping or surfacing metal and other materials. ... Turned chess pieces Metalworking is the craft and practice of working with metals to create structures or machine parts. ... This article is about the manufacturing process. ... For other uses, see CNC (disambiguation). ... 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 , structures, process equipment for chemical, fertilizer sector by cutting, shaping and assembling components made from raw materials. ... This article is about smithing. ... Rotating abrasive wheel on a bench grinder. ... For the Korean music group, see Jewelry (group). ... Center lathe with DRO and chuck guard. ... 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. ... Georg Agricola, author of De re metallica, an important early book on metal extraction Metallurgy is a domain of materials science that studies the physical and chemical behavior of metallic elements, their intermetallic compounds, and their compounds, 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. ... Turning, CNC turning, or manual turning is the process used to produce cylindrical components in a lathe. ... This article needs to be wikified. ... Welding is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. ...


  Results from FactBites:
 
Lathe (1426 words)
The lathe operates on the principle of the work being rotated against the edge of a cutting tool.
Lathe size is determined by the SWING and LENGTH OF THE BED.
The chief function of any lathe, no matter how complex it may appear to be, is to rotate the work against a controllable cutting tool.
Lathe - Wikipedia, the free encyclopedia (2603 words)
Lathes are used in woodturning, metalworking, metal spinning, and glassworking.
In a metalworking lathe, metal is removed from the workpiece using a hardened cutting tool, which is usually fixed to a solid moveable mounting called the "toolpost", which is then moved against the workpiece using handwheels and/or computer controlled motors.
All lathes have a "bed", which is (almost always) a horizontal beam (although some CNC lathes have a vertical beam for bed to ensure that swarf, or chips, falls free of the bed.
  More results at FactBites »

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m