Boring


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Boring

 

(in Russian, rastachivanie), a mechanical process for machining interior surfaces by boring (cutting) tools in order to increase the diameter of a hole. Boring is done on lathes, boring machines, and other metal-cutting machines. It is possible to machine blind and through holes, both cylindrical and conical, as well as grooves and slots. Boring yields a machining precision of classes 4 or 5 and a surface roughness of classes 2 or 3.


Boring

 

(in Russian, rassverlivanie), mechanical working of an existing hole with a drill in order to increase the diameter. It is done either by machine, using drilling and boring machines, lathes and other metalcutting machines, or by hand, using pneumatic or electric drills. The precision achieved is of the fourth to fifth class, and the surface roughness is of the second to third class.

boring, borehole

A hole drilled in the ground to obtain soil samples for evaluation and to obtain information about the strata.
References in periodicals archive ?
A quarter of women saw racing as exciting to watch, compared to 19 per cent of men, with only 39 per cent of females suggesting it was boring, but 50 per cent of males doing so.
The towns teamed up in 2012 after a friend of a Dull resident spotted Boring on a cycling trip.
The ground conditions were primarily cobble and hard pan dirt, a combination that could lead to difficult boring if done improperly.
If the boring is done underwater, the State Regulatory Agency (SRA) may require advance notice prior to installation, says the MSC.
Most of the families have lived in Boring for generations so everyone knows everyone else in town.
The girl was able to break free and run to safety, Boring said.
If they say the match against Anderlecht was a boring game I understand, I also think it was a boring game.
The Icon Group offers the finest shoring products, including cost-efficient, customized slide-rail sheeting systems, as well as the newest aluminum and steel trench box systems, hydraulic shoring boxes, boring and tank pits, DOT-approved tunnel access pits and more.
More than three-quarters of schoolchildren - a total of 77 per cent - find the summer holidays boring at least some of the time, according to research carried out by Thinktank, the Birmingham museum of science and discovery.
The Tunnel Boring Machine (TBM), a 450-ton rock-chewing tool nicknamed "the Mole.
A conventional boring machine using end supports would need a change of tools before it could make the two hole sizes.