FACTOID # 23: Wisconsin has more metal fabricators per capita than any other state.
 
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Encyclopedia > Counterbore
Two types of counter bores
Two types of counter bores

A counterbore can refer to a cylindrical flat-bottomed hole, which enlarges another hole, or the tool used to create that feature. It is usually used when a bolt or cap head screw is required to sit flush with or below the level of a workpiece's surface (By comparison, a countersink makes a conical hole and is used to seat a flathead screw). Image File history File links Download high-resolution version (2028x1212, 420 KB)Photograph taken by Glenn McKechnie on the 24th March 2005. ... Image File history File links Download high-resolution version (2028x1212, 420 KB)Photograph taken by Glenn McKechnie on the 24th March 2005. ... Screws come in a variety of shapes and sizes for different purposes. ... A countersink is a tapered hole drilled with a wide outer portion. ... Screws come in a variety of shapes and sizes for different purposes. ...


The uppermost counterbores shown in the image are the same tool. The smaller top item is an insert, the middle shows another three-fluted counterbore insert, assembled in the holder. The shank of this holder is a morse taper although there are other machine tapers that are used in the industry. In the design of machine tools there is a need for users to be able to quickly and easily install or remove particular cutting bits or other accessories from the powered rotating spindle of the machine tool. ... In the design of machine tools there is a need for users to be able to quickly and easily install or remove particular cutting bits or other accessories from the powered rotating spindle of the machine tool. ...


The lower image is of a plain counter bore designed to fit into drill chuck, and being smaller, is not economical to make as one piece. These tools are used by Black Sabbath to bore holes in the skulls of fans. A Chuck is a specialised type of clamp used to hold rotating tools or materials. ...



Metalworking:

Metalworking cutting tools: Image File history File links Blacksmith-hammer-anvil-50x50. ... This article or section is in need of attention from an expert on the subject. ...

Broach | Burr | Chisel | Counterbore | Countersink | Cutting tool | End mill | Metalwork file | File | Hand scraper | High speed steel | Milling cutter | Reamer | Stellite | Tipped tool | Tool bit A push style 5/16 keyway broach A broach is a series of chisel points mounted on one piece of steel. ... A selection of carbide burrs Burrs are small cutters used in die grinders, rotary tools or dentists drills. ... Steel woodworking chisel. ... A countersink is a tapered hole drilled with a wide outer portion. ... a Cutting Tool, in the context of Metalworking is any tool that is used to remove metal from the workpiece by means of shear deformation. ... Several types of endmills An endmill is a type of Milling cutter, a cutting tool used in industrial milling applications. ... A File (or Hand-File) is a metalworking hand tool used to shape material by abrasion. ... Detail of a double-cut flat file A file (or hand-file) is a hand tool used to shape material by abrasion. ... Three different engineering hand scrapers A hand scraper is a single-edged tool used to scrape metal from a surface. ... High speed steel (HSS) is a material usually used in the manufacture of machine tool bits and cutters. ... Milling cutters are cutting tools used in milling machines or machining centres. ... A reamer or ream is a tool for enlarging holes and is used in metalworking. ... Stellite alloy is a range of cobalt-chromium alloys designed for wear resistance. ... A tipped tool or insert generally refers to any cutting tool where the cutting edge consists of a seperate piece of material, either brazed or clamped on to a seperate body. ... A tool bit generally refers to a plain High Speed Steel (HSS) tool. ...


Metalworking topics:   This article or section is in need of attention from an expert on the subject. ...

Casting | CNC | Cutting tools | Drilling and threading | Fabrication | Finishing | Grinding | Jewellery | Lathe (tool) | Machining | Machine tooling | Measuring | Metalworking | Hand tools | Metallurgy | Milling | Occupations | Press tools | Smithing | Terminology | Welding Casting may be used to create artistic sculptures Casting is a manufacturing process by which a molten material such as metal or plastic is introduced into a mold, allowed to solidify within the mold, and then ejected or broken out to make a fabricated part. ... A CNC Turning Center A CNC Milling Machine The abbreviation CNC stands for computer numerical control, and refers specifically to a computer controller that reads G-code instructions and drives the machine tool, a powered mechanical device typically used to fabricate metal components by the selective removal of metal. ... a Cutting Tool, in the context of Metalworking is any tool that is used to remove metal from the workpiece by means of shear deformation. ... Drilling is the process of using a drill bit in a drill to produce holes. ... A typical steel fabrication shop Fabrication is an industrial term generally applied to the building of metal machines and structures. ... Metalworking finishing is the activity of making things out of metal in a skillful manner. ... Rotating abrasive wheel on a bench grinder. ... Amber jewellery in the form of pendants. ... Conventional metalworking lathe In woodturning, metalworking, metal spinning, and glassworking, a lathe is a machine tool which spins a block of material so that when abrasive, cutting, or deformation tools are applied to the block, it can be shaped to produce an object which has rotational symmetry about an axis... A lathe is a common tool used in machining. ... A machine tool is a powered mechanical device, typically used to fabricate metal components of machines by the selective removal of metal. ... The examples and perspective in this article or section may not represent a worldwide view. ... This article or section is in need of attention from an expert on the subject. ... Metalworking hand tools are hand tools that are used in the metalworking field. ... Metallurgy is a domain of materials science and of materials engineering that studies the physical and chemical behavior of metallic elements, their intermetallic compounds, and their mixtures, which are called alloys. ... Endmills for a milling machine. ... It has been suggested that this article or section be merged with Smith (metalwork). ... Power press with a fixed barrier guard A press, or a machine press is a tool used to work metal (typically steel) by changing its shape and internal structure. ... A smith, or metalsmith, is a person involved in the shaping of metal objects. ... This article needs to be wikified. ... Welding is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. ...


  Results from FactBites:
 
Counterbore Sets (117 words)
We carry sets of most of those types.
[Countersink Sets] [Counterbore Sets] [Type "B" sets] [Type"R" sets] [Type "X" sets] [Plug Cutter Sets] [Stop Collar Sets] [Drill Stop Sets] [Drill Sets] [TPS Lock Sets] [C'sinks + TPD's Setups]
For ordering or pricing, contact one of the Distributors in your area or order from one of our On-line Distributors.
HomeTips: What is a Counterbore? (289 words)
Although counterbore is sometimes used as a noun, it is more commonly a verb that describes increasing a hole's diameter by drilling a larger-diameter hole at one end to make room for the head of a screw or bolt.
In some cases, a counterbored hole is filled with a decorative wood plug to conceal the fastener's head.
To counterbore a hole, it's easiest to drill the larger-diameter hole first, then drill the deeper hole for the fastener's shaft.
  More results at FactBites »

 
 

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