Aaroswiss Machining

CNC Machining Industry Terms & Definitions

CNC Milling

Computer Numerical Control Milling Machine is operated with the aid of a computer. There are 2 basic classification, horizontal and vertical which describes the orientation of the main spindle. Milling Machines perform a variety of operations including: planning, drilling, keyway cutting, diesinking and contouring.

CNC Turning

The process by which a material is cut as the part is rotated while a single point cutting tool is moved parallel to the axis of the rotating part. A few of the non-specific operation are: boring, drilling, knurling, reaming and threading.


The process of CNC machining of very small and precise parts and components for a variety of industries including medical machining and dental machining. Some of these include: bone screws, surgical tools, pump components, valves and many more.

Screw Machine

Type of lathe that is fully automated and will continue running and produce parts with little human intervention. Screw machines can make parts that are threaded, like threaded inserts or other parts that are not screws or threaded at all.


Type of bearing that will reduce friction and wear inside a hole, such as a shaft casing. Bushing are made of various materials including brass, cast iron and graphite.


A part that keeps two parts from touching each other is called a standoff. Standoffs are made in many different sizes and shapes and can be used for mechanical and electrical applications.


Pins, screws, or bolts that are often used in the aerospace and defense industries to join an object to a panel.

Dowel Pins

Dowel rod that is cut into smaller lengths is called a dowel pin. Steel dowel pins have a common use in the masonry industry to join stone components together. Dowel pins can also be used for reference points to help align parts together in the manufacturing process.

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