Lathe Manufacturing Process
The machining process designed for precisely machining relatively hard materials. A lathe is a tool that rotates the workpiece on its axis to perform various operations such as cutting, sanding, knurling, drilling, or deformation, facing, turning, with tools that are applied to the workpiece to create an object with symmetry about an axis of rotation. They were originally designed to machine metals; however, with the advent of plastics and other materials, and with their inherent versatility, they are used in a wide range of applications, and a broad range of materials.
Mill Manufacturing Process
The machining process of using rotary cutters to remove material from a workpiece by advancing or feeding in a direction at an angle with the axis of the tool. Milling processes are operations in which the cutting tool rotates to bring cutting edges to bear against the workpiece. Milling machines are the principal machine tool used in milling. It is one of the most commonly used processes in industry and machine shops today for machining parts to precise sizes and shapes.
Saw Manufacturing Process
The machining process primarily used to part material such as rough-cutting excess material away before machining or cutting curved patterns in sheet metal. Sawing machines substitute mechanical or hydraulic powered motion for arm motion to achieve the speed necessary for production operations. The cutoff operation is usually one of the first requirements in any production process before any machining, welding, or forging is done. The saw blade has individual teeth that "track" through the workpiece, each tooth deepening the cut made by the preceding tooth in the direction of feed. The saw or work may be fed and by controlling the direction of feed, either straight or curved cuts can be made.
The available procedures and links related to aforementioned processes can be found here.