Turning, basically, generates cylindrical forms with a single point tool and in most cases the tool is stationary with the workpiece rotating. In many respects it is the most straight-forward metal cutting method with relatively uncomplicated definitions. On the other hand, being the most widely used process and easily lending itself to development, turning today is a highly optimized process, requiring thorough apprasial of the various factors in applications.
Turning...... is the combination of two movements: rotation of the workpiece and feed movement of the tool. In some applications, the workpiece can be stationary with the tool revolving around it to make the cut, but basically the principle is the same. The feed movement of the tool can be along the axis of the workpiece, which means the diameter of the part will be turned down to a smaller size. Alternatively, the tool can be fed towards the centre (facing off), at the end of the part. Often feeds are combinations of these two directions, resulting in tapered or curved surfaces which today’s CNC-lathe control units, with their many program possibilities, are able to more than cope with.
Turning can be broken down into a number of basic cuts for selecting tool types, cutting data and also programming for a certain operation.
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