boring mill

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.

单词	boring mill
释义	boring mill boring mill n (General Engineering) engineering a large vertical lathe having a rotating table on which work is secured. Tools are held on a fixed post and the work is rotated around it. Also called (informal): roundabout boring mill 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. ThesaurusSeeroundabout
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