Milling Machine Britannica

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die and diemaking

The movement of the milling machine's cutting head against the die block is controlled by a gauge that automatically traces around a model made of soft metal, plaster of paris, or wood. The template, or model, is attached to the bed beside the die block. The movement of the gauge over the template is transmitted to the cutter by hydraulic or ...

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tool

Encyclopædia Britannica, Inc. The lathe is the machine tool used to perform turning operations. It produces a cutting action by rotating a workpiece against a fixed tool having a single edge. ... Special milling machines include the …

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1911 Encyclopædia Britannica/Mill

In the engineering industries milling machines constitute a very important class of machine tools, the characteristic of which is that rotary cutters are employed for shaping the metal (see Tools). In coins the "milling " is the serrated edge, called "crenneling" by John Evelyn ( Discourse on Medals, 1697, p. 225), which is formed on ...

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Machine tool

Machine tool - Adaptive Control: Improvements in CNC machine tools depend on the refinement of adaptive control, which is the automatic monitoring and adjustment of machining conditions in response to variations in operation performance. With a manually controlled machine tool, the operator watches for changes in machining performance (caused, for example, by a dull tool …

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Point-to-point | numerical control system | Britannica

Other articles where point-to-point is discussed: machine tool: Numerical control (NC): …into two basic types: (1) point-to-point and (2) continuous-path. Point-to-point systems, commonly used on machines that perform hole-machining and straight-line milling operations, are relatively simple to program and do not require the aid of a computer.

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Shaper | Metalworking, Cutting, Milling | Britannica

shaper, metal-cutting machine in which the workpiece is usually held in a vise or similar device that is clamped to a table and can be manually operated or power driven at right angles to the path of a chisellike cutting tool with only one cutting edge held on the end of a reciprocating ram. A moving table feeds the workpiece in small, discrete increments at the end of each stroke of …

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Alphabetical Browse | Britannica

milling machine. milling machine, device that rotates a circular tool that has a number of cutting edges symmetrically arranged about its axis; the workpiece is commonly held in a vise or similar device clamped to a table that can move in three perpendicular directions. Disk- or barrel-shaped cutters are clamped. milling ratio (economics)

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Roller-bit cutter | machine | Britannica

Other articles where roller-bit cutter is discussed: tunnels and underground excavations: Preserving rock strength: …the hard-faced rolling disks, and roller-bit cutters using bits initially developed for fast drilling of oil wells. As later entrants in the field, European manufacturers have generally tried a different approach—milling-type cutters that mill or plane away part of the rock ...

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Ion beam machining | machine tool technology | Britannica

Other articles where ion beam machining is discussed: machine tool: Ion beam machining (IBM): In IBM a stream of charged atoms (ions) of an inert gas, such as argon, is accelerated in a vacuum by high energies and directed toward a solid workpiece. The beam removes atoms from the workpiece by transferring energy and momentum to…

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Vauxhall | British company | Britannica

Other articles where Vauxhall is discussed: automotive industry: Developments before World War I: …United States), marine engines (Vauxhall of Britain), machine tools (Leland of the United States), sheep-shearing machinery (Wolseley of Britain), washing machines (Peerless of the United States), sewing machines (White of the United States), and woodworking and milling …

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Planing mill | Woodworking, Machining, Shaping | Britannica

planing mill, final processing plant for lumber.After the lumber has been through the sawmill and seasoned, it comes to the planing mill. The principal machine there, the planer and matcher, dresses (finishes) the lumber and with the aid of a profile attachment patterns the wood into different stocks, as furniture components. Other equipment in the planing mill includes molding …

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Machine tool

Machine tool - EDM, Electrical Discharge, Machining: EDM involves the direction of high-frequency electrical spark discharges from a graphite or soft metal tool, which serves as an electrode, to disintegrate electrically conductive materials such as hardened steel or carbide. The electrode and workpiece are immersed in a dielectric liquid, and a feed mechanism maintains …

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tool

There are two main groups of milling machines. The general-purpose machine performs a variety of operations. Column-and-knee, manufacturing, and planer types are examples. A second …

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Machine tool

Milling machines. A milling machine cuts metal as the workpiece is fed against a rotating cutting tool called a milling cutter. Cutters of many shapes and sizes are available for a wide variety of …

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Turning machine | Britannica

Other articles where turning machine is discussed: machine tool: Turning machines: The engine lathe, as the horizontal metal-turning machine is commonly called, is the most important of all the machine tools. It is usually considered the father of all other machine tools because many of its fundamental mechanical elements are incorporated into the design of…

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Machine tool

Machine tool - Cutting, Grinding, Drilling: In order to remove chips from a workpiece, a cutting tool must be harder than the workpiece and must maintain a cutting edge at the …

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