Counterbore definition
Web2 days ago · 1. to enlarge the upper part of (a hole) in timber, metal, etc, so that the head of a bolt or screw can be sunk below the surface 2. to drive (a screw) or sink (a … WebSECTIONIII,DIVISIONS1AND2SubjectInterpretationFileNo,Division1,CodeCaseN,792,FatigueEvaluationsIncludingEnvironmentalEff,凡人图书馆stdlibrary.com
Counterbore definition
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WebCounterbore, n. 1. A flat-bottomed cylindrical enlargement of the mouth of a hole, usually of slight depth, as for receiving a cylindrical screw head. 2. A kind of pin drill with the cutting edge or edges normal to the axis; -- used for enlarging a hole, or for forming a flat-bottomed recess at its mouth. Counterbore, v. t. WebSymbols may be used for spotface, counterbore, and countersunk holes. These symbols always precede the diameter symbol. The depth symbol may be used to indicate the depth of a hole. The depth symbol is placed preceding the numerical value. When the depth of a blind hole is specified, it refers to the depth of the full diameter of the hole.
WebCountersinking, counterboring, and spotfacing operations can be carried out on drilling machines and usually follow drilling operations. This article discusses five common types of countersinking tools or countersinks, namely, machine, three-flute, single-flute, insert-type, and interchangeable countersinks. It provides a short description of ... WebFeb 19, 2024 · A counterbore usually references a feature that is deeper than a spotface. While a spotface creates a flat mounting surface, a counterbore acts to recess the fastener. It would be safe to call a spotface a counterbore but not …
Webapplications as for counterbore and hole depths. See Figure 5. Figure 5. Depth Symbol 2.5 Dimension Origin - A circle used in place of one of the arrowheads on a dimension line indicates the origin for measurement. See Figure 6. This symbol is not used as a replacement for datums and datum references. 2.7 Reference - Parentheses enclosing a ... Webcounterbore To bore out (a hole) to a larger diameter for a given depth. (n) counterbore A tool-holder or tool-bar for a drilling-machine. It is passed through a hole in the work and …
A counterbore hole is usually used when the head of a fastener, such as a hex head or socket head capscrew, is required to be flush with or below the level of a workpiece's surface. For a spotface, material is removed from a surface to make it flat and smooth, usually for a fastener or a bearing. Spotfacing is usually required on workpieces that are forged or cast. A tool referred to as a counterbore is typically used to cut the spotface, although an endmill may also b…
Webcounterbore: 1 n a bit for enlarging the upper part of a hole Synonyms: countersink , countersink bit Type of: bit the cutting part of a drill; usually pointed and threaded and is … cdpとは ネットワークWebFeb 16, 2024 · A counterbore is a circular hole with a flat bottom which coincides with another hole. The counterbored section allows a bolt head or other fastener to be … cdp とは 医療http://www.bestpcbs.com/blog/2024/09/whats-the-countersink-and-counter-bore-on-a-pcb-drawing/ cdp とは 人事Web: to form a counterbore in : enlarge (part of a hole) by means of a counterbore counterbore 2 of 2 noun 1 : a flat-bottomed enlargement of the mouth of a cylindrical … cdpとは 人事WebA counterbore (symbol: ⌴) is a cylindrical flat-bottomed hole that enlarges another coaxial hole, or the tool used to create that feature. A counterbore hole is typically used when a … cdpとは 気候変動WebSep 7, 2024 · A countersink consists of a conical hole that is coaxial to a cylindrical hole, where the angle of the cone is determined by the fastener to be used. Application: Countersinks allow a screwhead to sit slightly below the surface of a part to prevent exposed screwheads on that surface. cdp とは 環境WebBy definition, a countersink is a stepped hole, which can allow the fasten parts head to sink fully to the parts. With counter sink on your design, the tapered head of a screw can sit flush with the top of the laminate, commonly countersink is used to install bolts or other connecting parts. cdp とは 気候変動