CNC Milling Machine

    Equipment/facility: Equipment

    • LocationShow on map

      Machine Shop, Building 1A, Undercroft. Opposite to Material Testing Lab.

    Equipments Details

    Description

    A CNC (Computer Numerical Control) Milling machine is a machine tool in which the work is held on vice or clamps and rotating tool is used for metal cutting. Material removal shall be done by rotating tool against fixed Job. Operations that shall be performed in this machine are Milling, Profiling, Drilling, Boring Thread cutting, Grooving, Reaming and Tapping . Most CNC milling machines are also called machining centers are computer controlled vertical mills with the ability to move the spindle vertically along the Z-axis. This extra degree of freedom permits their use in all types of milling, die sinking, engraving applications, and 3D surfaces such as relief sculptures. When combined with the use of conical tools or a ball nose cutter, it also significantly improves milling precision without impacting speed, providing a cost-efficient alternative to most flat-surface and profile surface work. As material passes through the cutting area of a milling machine, the blades of the cutter take swarfs of material at regular intervals. Surfaces cut by the side of the cutter (as in peripheral milling) therefore always contain regular ridges. The distance between ridges and the height of the ridges depend on the feed rate, number of cutting surfaces, the cutter diameter. With a narrow cutter and rapid feed rate, these revolution ridges can be significant variations in the surface finish. CNC machines can exist in virtually any of the forms of manual machinery, like horizontal mills and Vertical mills. CNC Milling machines are practically always programmed with CAM. The operating system of such machines is a closed loop system and functions on feedback. These machines have developed from the basic NC (NUMERIC CONTROL) machines. A computerized form of NC machines is known as CNC machines. A set of instructions (called a program) is used to guide the machine for desired operations. Some very commonly used codes, which are used in the program are. The Control used in CNC milling is Fanuc Oi.

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