Machining operations required for manufacturing Machined Parts
Machining operations are processes that are required to produce the machined parts. Or the method to fashion them into the desire dimension and shape. There are multiple categories of machining operations, each of which is capable of generating a part’s surface texture or geometry.
When using the turning method, a cutting tool that has a single cutting edge is used to remove material from a rotating work piece to create a cylindrical shape. The primary motion is provided by rotation of the work piece, and the feed motion is done by moving the cutting tool slowly in a direction parallel to the axis of rotation of the work piece.
When using the milling process, a rotating tool with multiple cutting edges is moved slowly relative to the material to make a flat or straight surface. The direction of the feed motion is perpendicular to the tool's axis of rotation. The speed motion is provided by the rotating milling cutter. The two basic forms of milling are：Peripheral milling、Face milling.
The main purpose of drilling is to create a round hole. This is accomplished by a rotating tool which typically has two or four helical cutting edges. The tool is fed in a direction parallel to its axis of rotation into the work piece to form the round hole.
In boring, a tool with a single bent pointed tip is advanced into a roughly made hole in a spinning workpiece to slightly enlarge the hole and improve its accuracy. It is a fine finishing operation used in the final stages of product manufacture.
Reaming is one of the sizing operations that removes a small amount of metal from a hole already drilled.
Other conventional machining operations include shaping, planing, broaching and sawing. Also, grinding and similar abrasive operations are often included within the category of machining.