jig borer


jig borer
A type of machine tool invented during the World War I era to make possible the quick-yet-very-precise location of hole centers.

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  • Jig borer — The jig borer is a type of machine tool invented at the end of World War I to make possible the quick yet very precise location of hole centers. It was invented independently in the United States and Switzerland. [Moltrecht, Karl Hans: Machine… …   Wikipedia

  • jig borer — noun Etymology: jig (I) : a precision machine tool resembling a vertical milling machine, equipped with sensitive adjustments for the table and the position of the cutting tool, and used especially for locating and drilling or boring holes in… …   Useful english dictionary

  • Jig (tool) — In metalworking and woodworking, a jig is a type of tool used to control the location and/or motion of another tool. A jig s primary purpose is to provide repeatability, accuracy, and interchangeability in the manufacturing of products.[1] A jig… …   Wikipedia

  • Jig grinder — A jig grinder is a machine tool used for grinding complex shapes and holes where the highest degrees of accuracy and finish are required.The jig grinder is very similar to a jig borer, in that the table positioning and spindles are very accurate… …   Wikipedia

  • Milling machine — For the machine used in road construction, see Asphalt milling machine. Not to be confused with mill (grinding). Example of a bridge type CNC vertical milling center …   Wikipedia

  • Grinding wheel — Grinding wheels A grinding wheel is an expendab …   Wikipedia

  • Tap and die — Not to be confused with Tool and die. Taps and dies are cutting tools used to create screw threads, which is called threading. A tap is used to cut the female portion of the mating pair (e.g., a nut). A die is used to cut the male portion of the… …   Wikipedia

  • Drill bit — For the fictional character, see Drill Bit (Transformers). For the cancelled skyscraper nicknamed Drill bit, see Chicago Spire. For the types used in drilling wells, see Well drilling. From top to bottom: Spade, lip and spur (brad point), masonry …   Wikipedia

  • Lathe (metal) — Center lathe with DRO and chuck guard. Size is 460 mm swing x 1000 mm between centers A metal lathe or metalworking lathe is a large class of lathes designed for precisely machining relatively hard materials. They were originally designed to… …   Wikipedia

  • Drill — For other uses, see Drill (disambiguation). Drill scheme A drill or drill motor is a tool fitted with a cutting tool attachment or driving tool attachment, usually a drill bit or driver bit, used for drilling holes in various materials or… …   Wikipedia


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