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Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.
Steel mill with two arc furnaces. Steelmaking is the process of producing steel from iron ore and/or scrap.Steel is made from iron and carbon. On its own, iron is not strong, but a low concentration of carbon – less than 1 percent, depending on the kind of steel – gives steel strength and other important properties.
factor K, this is the relation between Sγ and Sα. This can also be calculated by the ratio of the two axis of the ellipse. This factor describes the form of the cutting edge. 3 angles: clearance angle, wedge angle, rake (chipping) angle; Δr; length and orientation of the bevel; Cutting edge profile with parameters
Machine tool builders no longer use the "plain"-versus-"universal" labeling. Size Micro, mini, benchtop, standing on floor, large, very large, gigantic Power source Line-shaft-drive versus individual electric motor drive Most line-shaft-drive machines, ubiquitous circa 1880–1930, have been scrapped by now Hand-crank-power versus electric
The speed ratio for a pair of meshing gears can be computed from ratio of the radii of the pitch circles and the ratio of the number of teeth on each gear, its gear ratio. Two meshing gears transmit rotational motion. The velocity v of the point of contact on the pitch circles is the same on both gears, and is given by
An ideal transformer is a reasonable approximation for a typical commercial transformer, with voltage ratio and winding turns ratio both being inversely proportional to the corresponding current ratio. The load impedance referred to the primary circuit is equal to the turns ratio squared times the secondary circuit load impedance. [7]
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The Moore family firm, the Moore Special Tool Company, independently invented the jig borer (contemporaneously with its Swiss invention), and Moore's monograph is a seminal classic of the principles of machine tool design and construction that yield the highest possible accuracy and precision in machine tools (second only to that of ...