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  2. Boring (manufacturing) - Wikipedia

    en.wikipedia.org/wiki/Boring_(manufacturing)

    A part's-eye view of a boring bar. Hole types: Blind hole (left), through hole (middle), interrupted hole (right). In machining, boring is the process of enlarging a hole that has already been drilled (or cast) by means of a single-point cutting tool (or of a boring head containing several such tools), such as in boring a gun barrel or an engine cylinder.

  3. Boring bar - Wikipedia

    en.wikipedia.org/wiki/Boring_bar

    A boring bar is a tool used in metalworking and woodworking. Boring is a technique used in many aspects of building. Woodworkers have used boring as a form of drilling for centuries. In woodworking, the boring tool is static in size and used to form circular plunge cuts. In metalworking, boring is slightly different in that the hole that ...

  4. Ex-Cell-O - Wikipedia

    en.wikipedia.org/wiki/Ex-Cell-O

    In 1937, Woodworth left the company, which was then reorganized as Ex-Cell-O Corp. The more general name was chosen to reflect their increasingly diverse product lines, which included high-precision thread grinders, boring machines, facing machines, and lapping machines. [4] Ex-Cell-O was part of the Arsenal of Democracy. [5]

  5. Spotface - Wikipedia

    en.wikipedia.org/wiki/Spotface

    Such operations can be done with boring bars reaching through a hole while shifted off-center, then shifting onto center for the cut (for example, in the G76 fine boring cycle), or with back-deburring style tools whose cutting edges open and close in umbrella-like or check-valve-like fashion.

  6. John Wilkinson (industrialist) - Wikipedia

    en.wikipedia.org/wiki/John_Wilkinson_(industrialist)

    Historically, cannons had been cast with a core and then bored to remove imperfections, but in 1774 Wilkinson patented a technique for boring iron guns from a solid piece, rotating the gun barrel rather than the boring-bar. This technique made the guns more accurate since the bore was uniform in diameter, and less likely to explode.

  7. P&H Mining - Wikipedia

    en.wikipedia.org/wiki/P&H_Mining

    P&H Mining Equipment sells drilling and material handling machinery under the "P&H" trademark. The firm is an operating subsidiary of Joy Global Inc. In 2017 Joy Global Inc. was acquired by Komatsu Limited of Tokyo, Japan, and is now known as Komatsu Mining Corporation and operates as a subsidiary of Komatsu.

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