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drilling machine |
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drill pressor drilling machineMachine tool for producing holes in hard substances. The drill is held in a rotating spindle and is fed into the workpiece, which is usually clamped in a vise supported on a table. The drill may be gripped in a chuck with three jaws that move radially in unison, or it may have a tapered shank that fits into a tapered hole in the spindle. Means are provided for varying the spindle speed and (on some machines) for automatically feeding the drill into the workpiece. See also boring machine. drilling machine [′dril·iŋ mə‚shēn] (mechanical engineering) A device, usually motor-driven, fitted with an end cutting tool that is rotated with sufficient power either to create a hole or to enlarge an existing hole in a solid material. Also known as driller. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Lots of everything, bits, rods, drilling machines, the complete range. Voith Paper, Heidenheim, Germany said that one and a half years after the decision had been made to buy the world's largest gun drilling machine (TIBO II) for Voith St. Tunnelling on the Red Line subway has been halted twice this month, first when the drilling machine called ``Thelma'' hit water, and again when it encountered loose ground, a transit spokesman said Wednesday. |
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