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them to the machine spindle. Users will be required to select the appropriate cutting tools, to mount and secure them to the appropriate tool holding devices, and to place the cutting tools in the relevant positions within the tool posts , turrets ,slides or tools in the relevant positions within the tool posts , turrets ,slides or tool change magazine/carousel, where this applicable performed on a machine called a lathe in which the tool is stationary and the part is rotated. The figure below illustrates an engine lathe. are designed solely for operations, so that precise control of the cutting results in tight tolerances. The work piece is mounted on the which rotates relative to the stationary tool. times operations and machines High equipment cost Significant tool wear Large amount of scrap Milling is the most common form of machining, a material removal process, which can create a variety of features on a part by cutting away the unwanted material. The milling process requires a milling machine, workpiece, fixture, and cutter. The workpiece is a piece of pre-shaped material that is secured to the fixture, which itself is attached to a platform inside the milling machine. The cutter is a cutting tool with sharp teeth that is also secured in the milling machine and rotates at high speeds. By feeding the workpiece into the rotating cutter, material is cut away from this workpiece in the form of small chips to create the desired shape. It is compatible with all materials Flexible use Short lead times The milling process, those that are present can often be attributed to inaccuracies in a features dimensions or surface roughness. In short, the use of an inadequate milling machine, a dull cutting blade or failure to secure the work piece in question is the biggest problems manufacturers face when implementing
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