boring mill


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boring 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. In a horizontal boring mill the workpiece is held stationary on a vertical table whose position can be adjusted. A spindle attached to a vertically adjustable head holds the cutting tool, which is fed horizontally into the work. In a vertical boring mill the workpiece is made to revolve on a horizontal circular table as the tool is fed in.

boring mill

[′bȯr·iŋ ‚mil]
(mechanical engineering)
A boring machine tool used particularly for large workpieces; types are horizontal and vertical.
References in periodicals archive ?
"To replace an old boring mill of this size, you're talking about spending close to a million dollars for a new one," says Bikle.
For its North American customers, recent economic turmoil was reflected in changes to distribution of its horizontal boring mills. But starting this month, it has established Union America (Cincinnati, Ohio) at the site of one of its biggest U.S.
ENPNewswire-July 25, 2019--MHI Machine Tool Launches the New MAF-E II Series of Table-type Horizontal Boring Mills; Thermal Deformation Control Provides Stability in High Processing Accuracy and Productivity; Series incorporates thermostabilized columns and a spindle cooling mechanism, first model offers a 130mm boring spindle; Unveiling at the company's Machine Tool Fair, highlighting advantages in processing components such as core parts for industrial machinery
The company said the new machines are part of its USD100m expansion, which also includes two recently delivered MAG U5 universal machining centres, two MC 1600 boring mills and MAG's Freedom eLOG monitoring software.
It produces machine tools like Dorries vertical-spindle lathes, Droop + Rein portal machining centers, Scharmann horizontal-spindle machining centers and boring mills, Berthiez lathes and grinders, and Ecospeed aerospace gantry mills.
Pre-engineered retrofit kits are available for G&L vertical turning lathes and horizontal boring mills, Cincinnati Cinturn lathes, and Arrow, Sabre, and Lancer vertical mills.
The addition will house a variety of new CNC boring mills, lathes and machining centers to ensure quality and quick turn around.
Also grinding equipment, conventional smaller milling machines, boring mills, lathes, and pantograph.
Only in one case - big boring mills for Poland - did Mr Harold Wilson, president of the Board of Trade, promise a definite step but he outlined safeguards which convinced most MPs that Russia and her satellites would not get any more machine tools from Britain.
He also contracts with three mills--located in eastern Oregon, Washington, and Montana--to make the same products as his two Boring mills.