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Equipment List

D.C.N.C. O-M VERTICAL BORING MILL

  • ATC WITH 12 TOOL CAPACITY
  • FANUC SERIES 18-T CONTROL
  • 67" TABLE / 80" SWING / 75 3/8" UNDER RAIL
  • 63" TURNING HEIGHT / 4 JAW CHUCK
  • 35 1/2" VERTICAL TRAVEL OF RAM HEAD
  • 56 3/4" HORIZONTAL TRAVEL OF RAM HEAD
  • 7.1" SQUARE RAM SIZE

  • C.N.C. RAFAMET 14' VERTICAL BORING MILL

  • 144" TABLE / 4 JAW CHUCK
  • 168" SWING / 14' UNDER RAIL HEIGHT
  • 2 RAM HEADS WITH 60" TRAVEL
  • 1 SIDE HEAD WITH 120" TRAVEL

  • C.N.C BULLARD DYNATROL
    86" VERTICAL BORING MILL

  • 86" TABLE
  • 98" SWING
  • 98" UNDER RAIL HEIGHT
  • 4 JAW CHUCK
  • 2 RAM HEADS
  • FULL PENDANT CONTROL

  • Boring

    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), for example as in boring a gun barrel or an engine cylinder. Boring is used to achieve greater accuracy of the diameter of a hole, and can be used to cut a tapered hole. Boring can be viewed as the internal-diameter counterpart to turning, which cuts external diameters.
    There are various types of boring. The boring bar may be supported on both ends (which only works if the existing hole is a through hole), or it may be supported at one end (which works for both through holes and blind holes). Line boring (line boring, line-boring) implies the former. Back boring (back boring, back-boring) is the process of reaching through an existing hole and then boring on the "back" side of the work piece (relative to the machine headstock).
    Because of the limitations on tooling design imposed by the fact that the work piece mostly surrounds the tool, boring is inherently somewhat more challenging than turning, in terms of decreased tool holding rigidity, increased clearance angle requirements (limiting the amount of support that can be given to the cutting edge), and difficulty of inspection of the resulting surface (size, form, surface roughness). These are the reasons why boring is viewed as an area of machining practice in its own right, separate from turning, with its own tips, tricks, challenges, and body of expertise, despite the fact that they are in some ways identical.
    Boring and turning have abrasive counterparts in internal and external cylindrical grinding. Each process is chosen based on the requirements and parameter values of a particular application.

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