Boring Head

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Boring Head


(1) An attachment on a boring machine to which one or several cutters may be fastened. The cutters are mounted to correspond with the required dimension of the hole to be worked using micrometer screws, or they may use radial feed.

Boring heads may be fastened by a shaft to the spindle of the machine or attached to the boring bar. The body of the boring head, which is kept from turning by a key, is fastened onto the boring bar with a nut; the toolholder is shifted along guides in the body. Radial feed is carried out by means of a screw that turns with each turn of the spindle. The screw is connected to a bevel-gear drive by means of a sprocket, whose teeth strike a stop as the screw turns.

(2) A portable component consisting of multiple spindles on a heavy-duty boring machine. It allows several holes with parallel axes to be worked simultaneously.

(3) A spindle unit on a diamond boring machine.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
My boring head has been playing games with me again.
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Features include a Windows-based numerical control, HSD cartridge-type electro-spindle with bi-directional rotation speeds of up to 24,000 rpm, a boring head with high-speed spindles and rotation speeds of up to 6,000 rpm, BiesseWorks Advanced programming software, automatic lubrication and an air-conditioned electrical cabinet.
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A boring head with an optoelectronic adjustment measuring system and digital display with 0.0001" accuracy in the diameter range 0.118" to 4.882".
and I crack the lock nut on the boring head and dial the boring bar
M05 hi.flex finish boring system is designed for high flexibility and covers diameter ranges from 0.236" to 4.921" with one adjustable boring head. Adjustment accuracy is 0.0004" per graduation on an easy-to-read scale and 0.000 08" from a vernier, with a total adjustment path of up to 0.197".
The addition of a new boring head extends the upper range of Series 310 EWB boring heads from 4 to 6 in.
THE pop feud between Robbie Williams and Oasis has reared it's boring head again.
The steerable boring head worms around obstacles as indicated by the hand-held DigiTrak drill head monitor.