machine tool

(redirected from Machine tools)
Also found in: Dictionary, Thesaurus.

machine tool,

power-operated tool used for finishing or shaping metal parts, especially parts of other machines. An establishment that is equipped with such tools and specializes in such work is known as a machine shop. Machine tools operate by removing material from the workpiece, much as a sculptor works. Basic machining operations are: (1) turning, the shaping of a piece having a cylindrical or conical external contour; (2) facing, the shaping of a flat circular surface; (3) milling, the shaping of a flat or contoured surface; (4) drilling, the formation of a cylindrical hole in a workpiece; (5) boring, the finishing of an existing cylindrical hole, as one formed by drilling; (6) broaching, the production of a desired contour in a surface; (7) threading, the cutting of an external screw thread; and (8) tapping, the cutting of an internal screw thread. In addition there are operations such as sawing, grinding, gear cutting, polishing, buffing, and honing. The tools themselves vary in size from hand-held devices that can be used for drilling and grinding to large stationary tools that perform a number of operations. Many machine tools have a name that indicates their principal function, e.g., drill press, broach machine, milling machine, and jig borer. The lathelathe
, machine tool for holding and turning metal, wood, plastic, or other material against a cutting tool to form a cylindrical product or part. It also drills, bores, polishes, grinds, makes threads, and performs other operations.
..... Click the link for more information.
 can perform turning, facing, threading, drilling, and other operations. In order to withstand the great heat that this work generates, the materials used in machine tools must be extremely hard and durable. Thus, their working surfaces are made of such substances as high-speed steels, sintered carbides, and diamonds. To help dissipate the heat, the area of contact between the working surface and the workpiece is usually lubricated with a fluid that may also improve the finish of the workpiece's surface. Modern machine tools are often numerically or computer controlled; where a human operator can be distracted, and is limited by the speed of human reflexes, a numerically controlled machine is more reliable and accurate. See boring millboring mill,
machine tool used to increase the size of a hole previously made in a workpiece, usually with the purpose of obtaining a required degree of finish and accuracy in the final hole.
..... Click the link for more information.
.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

machine tool

[mə′shēn ‚tül]
(mechanical engineering)
A stationary power-driven machine for the shaping, cutting, turning, boring, drilling, grinding, or polishing of solid parts, especially metals.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

machine tool

a power-driven machine, such as a lathe, miller, or grinder, that is used for cutting, shaping, and finishing metals or other materials
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
'Euro Gulf' today is a popular name in the Middle East and North Africa (Mena) region, known for CNC machine tools, industrial automation and robotics and will be exhibiting Hwacheon machinery at SteelFab 2019.
The main goal of this research is to create an application of ISV Simulation to design and develop of Heavy Machine Tools. The PLM System Teamcenter, NX CAD System, NX CAM System, NX ISV Simulation module are used to problem solving and the software the post Builder is used for programming postprocessors.
In 2015, sales revenue of machine tool industry in China exceeded CNY 800 billion.
This report covers the present scenario and growth prospects of the Machine Tool market in South Korea for 2015-2019.
Machine tools for working wood, cork, bone and hard plastics
How will the TAC help the Indian machine tools manufacturers?
15 January 2010 - Finnish lifting equipment maker Konecranes Oyj (HEL: KCR1V) said today it expanded its machine tool service (MTS) business via the acquisition of Danish firm AH Maskinservice A/S and Scottish player Axis Machine Tool Engineers Ltd.
Siemens PLM Software Virtual Machine Tool Software Kit enables a machine tool builder to create a virtual version of their machine tool.
companies that use machine tools have about 2 million machine tools and employ 750,000 to 1 million workers in directly-related occupations, such as toolmakers, machinists, operators, and programmers.
In this newly created position, Sarro will lead a new leasing program that will offer financing for machine tools purchased from either the company or one of its distributors.

Full browser ?