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CAM, Manufacturing

what is machining? types?

Machining is a term used to describe a variety of material removal processes in which a cutting tool removes unwanted material from a workpiece to produce the desired shape. The workpiece is typically cut from a larger piece of stock, which is available in a variety of standard shapes, such as flat sheets, solid bars, hollow tubes, and shaped beams. Machining can also be performed on an existing part, such as a casting or forging.

machining includes a variety of processes that each removes material from an initial workpiece or part. The most common material removal processes, sometimes referred to as conventional or traditional machining, are those that mechanically cut away small chips of material using a sharp tool. Non-conventional machining processes may use chemical or thermal means of removing material. Conventional machining processes are often placed in three categories – single point cutting, multi-point cutting, and abrasive machining. Each process in these categories is uniquely defined by the type of cutting tool used and the general motion of that tool and the workpiece. However, within a given process a variety of operations can be performed, each utilizing a specific type of tool and cutting motion. The machining of a part will typically require a variety of operations that are performed in a carefully planned sequence to create the desired features.
Material removal processes

  • Mechanical
  •      Single-point cutting
  •           Turning
  •           Planing and shaping
  •      Multi-point cutting
  •           milling
  •           drilling
  •           Broaching
  •           Sawing
  •       Abrasive machining
  •           Grinding
  •           Honing
  •           Lapping
  •           Ultrasonic machining
  •           Abrasive jet machining
  • Chemical
  •            Chemical machining
  •             Electrochemical machining (ECM)
  • Thermal
  •             Torch cutting
  •             Electrical discharge machining (EDM)
  •             High energy beam machining


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