countersinkˈkaʊn tərˌsɪŋk
countersink (n)
English Definitions:
countersink (noun)
a hole (usually in wood) with the top part enlarged so that a screw or bolt will fit into it and lie below the surface
counterbore, countersink, countersink bit (verb)
a bit for enlarging the upper part of a hole
set, countersink (verb)
insert (a nail or screw below the surface, as into a countersink)
countersink (Noun)
a conical recess, typically machined around a hole to admit a screw so that it sits flush with a surface.
countersink (Verb)
to create such a conical recess.
Countersink
A countersink is a conical hole cut into a manufactured object, or the cutter used to cut such a hole. A common usage is to allow the head of a countersunk bolt or screw, when placed in the hole, to sit flush with or below the surface of the surrounding material. A countersink may also be used to remove the burr left from a drilling or tapping operation thereby improving the finish of the product and removing any hazardous sharp edges. The basic geometry of a countersink inherently can be applied to the plunging applications described above and also to other milling applications. Therefore countersinks overlap in form, function, and sometimes name with chamfering endmills. Regardless of the name given to the cutter, the surface being generated may be a conical chamfer or a beveled corner for the intersection of two planes.
Countersink
A countersink (symbol: ⌵) is a conical hole cut into a manufactured object, or the cutter used to cut such a hole. A common use is to allow the head of a countersunk bolt, screw or rivet, when placed in the hole, to sit flush with or below the surface of the surrounding material (by comparison, a counterbore makes a flat-bottomed hole that might be used with a socket-head capscrew). A countersink may also be used to remove the burr left from a drilling or tapping operation thereby improving the finish of the product and removing any hazardous sharp edges. The basic geometry of a countersink (cutter) inherently can be applied to the plunging applications described above (axial feed only) and also to other milling applications (sideways traversal). Therefore, countersinks overlap in form, function, and sometimes name with chamfering endmills (endmills with angled tips). Regardless of the name given to the cutter, the surface being generated may be a conical chamfer (plunging applications) or a beveled corner for the intersection of two planes (traversing applications).
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"countersink." Kamus.net. STANDS4 LLC, 2024. Web. 19 Apr. 2024. <https://www.kamus.net/english/countersink>.
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