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 ?
MHI today enjoys a solid reputation in both the domestic and global markets for its wide range of large-size machine tools - including abundant lineups of both horizontal boring mills and double column -type machining centers - and for its product technologies addressing diverse customer needs.
SNK America has added Niigata horizontal machining centers and Ikegai boring mills to its product offerings.
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.
This precision design moves work to and from the spindle like a horizontal boring mill, eliminating column movement during critical machining operations on bores.
Finally, the new fixturing eliminates the need for a boring mill, broaching machine, and specialized grinders.
Table Type Horizontal Boring Mill, and a Traub Cnc Turning Lathe Model TND-360
facility It provides CNC horizontal and vertical machining centers, CNC horizontal boring mills, CNC lathes, CNC outside diameter and surface grinding, and CNC laser and press brakes.
Tokyo, Feb 28, 2012 - (JCN Newswire) - Mitsubishi Heavy Industries Ltd (MHI) has developed two floor-type horizontal boring mills, the "MAF150C" and "MAF180C," with 150 millimeter (mm) and 180 mm boring spindle diameters, respectively.
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.