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Encyclopedia > Bore gauge

A bore gauge is a convenient term for the measuring or transfer tools that are used in the process of accurately measuring holes.

Contents


Transfer gauges

Telescopic gauges

Telescopic gauge set
Enlarge
Telescopic gauge set

These are a range of gauges that are used to measure a bore's size, by transferring the internal dimension to a remote measuring tool. They are a direct equivalent of inside calipers and require the operator to develop the correct feel to obtain repeatable results. A caliper is a device used in the metalworking field of mechanical engineering, to measure the distance between two symmetrically opposing sides. ...


The gauges are locked by twisting the knurled end of the handles, this action is performed to exert a small amount of friction on the telescopic portions of the gauge (the smaller diameter rods found at the T head of the gauge). Once gently locked to a size slightly larger than the bore, the gauges are inserted at an angle to the bore and slowly brought to align themselves radially, across the hole. This action compresses the two anvils where they remain locked at the bores dimension after being withdrawn. Two examples of the use of knurling in hand tools. ...


The gauge is then removed and measured with the aid of a micrometer or vernier caliper. External, internal, and depth micrometers A micrometer is a widely used device in mechanical engineering for precisely measuring thickness of blocks, outer and inner diameters of shafts and depths of slots. ... A caliper is a device used in the metalworking field of mechanical engineering, to measure the distance between two symmetrically opposing sides. ...


Small hole gauges

Small hole gauge set
Enlarge
Small hole gauge set

A set of tools, shown in the image at the left, which cover the smaller sizes — 3mm (0.125") to 13mm (0.5").


They require a slightly different technique to the telescopic gauges, the small hole gauge is initially set smaller than the bore to be measured. It is then inserted into the bore and adjusted by rotating the knurled knob at the base, until light pressure is felt when the gauge is slightly moved in the bore. Measurement is again by external means.


The gauges shown in the image cover

  • 3mm (0.125") to 5mm (0.200")
  • 5mm (0.200") to 7.5mm (0.300")
  • 7.5mm (0.300") to 10mm (0.400")
  • 10mm (0.400") to 13mm (0.500")

Dial bore gauge

Is a Dial indicator type gauge that will measure a range of holes directly. The tool consists of Dial indicators are instruments used to accurately measure a small distance. ...

  • A range of interchangeable anvil pieces (for the telescopic part of the gauge) that transfer their movement to a freely moving rod.
  • A body that includes a transfer mechanism (the movable rod)
  • A dial indicator mounted at the remote end (to measure the axial movement of the rod).

This combination allows the bore size to be accurately read from the instrument with the minimum of effort. The fixed end of the anvil piece has pressure fingers on either side of it that assist correct placement in the bore, this reduces the reliance on feel by the operator, as required when using the telescopic gauge.




WikiProject Metalworking:

Measuring tools and gauges: Image File history File links Blacksmith-hammer-anvil-50x50. ... Metalworking is the craft and practice of working with metals to create parts or structures. ...

Bore gauge | Caliper | Dial indicator | Engineer's blue | Feeler | Fishtail-Center | Gauge blocks | Gauge | Go-NoGo | Machinist square | Marking blue | Marking gauge | Marking out | Micrometer | Radius gauge | Ruler | Sine bar | Spirit level | Straightedge | Surface plate | Tape measure | Thread pitch | Vernier height | Vernier scale | Wiggler A caliper is a device used in the metalworking field of mechanical engineering, to measure the distance between two symmetrically opposing sides. ... Dial indicators are instruments used to accurately measure a small distance. ... Prussian Blue is the name of two musical groups: Prussian Blue (British band) Prussian Blue (American duo) See also: Prussian blue, a pigment This is a disambiguation page, a list of pages that otherwise might share the same title. ... Feeler gauge set A feeler gauge is a simple tool used to measure thicknesses. ... Gauge blocks, Johansson Gauge or slip gauges are precision ground and lapped measuring standards. ... In engineering, a gauge is used to make measurements. ... Two typical engineers squares A machinist square or engineers square is the metalworkers equivalent of a try square. ... Marking Blue is a dye used in metalworking. ... Stanley and Veritas marking gauges A marking gauge is used in woodworking and metalworking to mark out lines for cutting or other operations. ... Marking out is a moment of enjoying professional wrestling for what it is rather than analyzing its staged nature, and can be a sought-after experience for fans whose insider knowledge can make them jaded toward its entertainment aspect. ... External, internal, and depth micrometers A micrometer is a widely used device in mechanical engineering for precisely measuring thickness of blocks, outer and inner diameters of shafts and depths of slots. ... A ruler is an instrument used in geometry and technical drawing to measure short distances and/or to rule straight lines. ... A sine bar is a tool used to measure angles in metalworking. ... A straightedge is a tool similar to a ruler, but without markings. ... A surface plate is a solid, flat table that can be confidently used as a datum for marking out, measuring workpieces, or setting up tooling. ... Self-retracting pocket tape measure A tape measure or measuring tape is a ribbon of cloth, plastic, or metal with linear-measure markings, often in both imperial and metric units. ... A height gauge is a measuring device used either for determining the height of something, or for repetitious marking of items to be worked on. ... A set of vernier calipers. ... Wiggler Set of wigglers A wiggler, center finder or sticky pin refers to a tool used in the rotating spindle of a machine such as mill or drill. ...


Metalworking topics:   Casting | CNC | Cutting machines | Cutting tools | Drilling and threading | Fabrication | Finishing | Grinding | Jewellery | Lathes | Machining | Machine tooling | Measuring | Metalworking | Hand tools | Metallurgy | Milling | Occupations | Press tools | Smithing | Terminology | Welding One half of a bronze mold for casting a socketed spear head dated to the period 1400-1000 BC. This article is about the manufacturing process. ... A CNC Turning Center The abbreviation CNC stands for Computer(ized) Numerical(ly) Control(led), and refers specifically to the computer control of machine tools for the purpose of (repeatedly) manufacturing complex parts in metal as well as other materials, using a program written in a notation conforming to the... Turned chess pieces Metalworking is the craft and practice of working with metals to create parts or structures. ... 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. ... Rotating abrasive wheel on a bench grinder. ... Jewellery (Jewelry in American spelling); consists of ornamental devices worn by persons, typically made with gems and precious metals. ... 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. ... Metalworking is the craft and practice of working with metals to create parts or structures. ... 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 and their mixtures, which are called alloys. ... A Milling machine is a power-driven machine used for the complex shaping of metal (or possibly other materials) parts. ... 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:
 
Blum-Novotest: Bore Gauge (658 words)
The BLUM Bore Gauge BG40 is a system to monitor the quality of tight-tolerance fits on machining centers and transfer machines.
Conventional workpiece probes use the read-out of the axis-position of the machine to measure values, whereas the Bore Gauge is a complete, machine-independent measuring device in itself, even though it resides within the machine tool.
The Bore Gauge can be mounted in standard tool holders and transferred from the machining center tool magazine to the spindle just like any other tool.
Bore gauge - Wikipedia, the free encyclopedia (403 words)
The gauges are locked by twisting the knurled end of the handles, this action is performed to exert a small amount of friction on the telescopic portions of the gauge (the smaller diameter rods found at the T head of the gauge).
Once gently locked to a size slightly larger than the bore, the gauges are inserted at an angle to the bore and slowly brought to align themselves radially, across the hole.
The gauge is then removed and measured with the aid of a micrometer or vernier caliper.
  More results at FactBites »


 

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