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Understanding the Different Types of CNC Machining Parts: From Turning to Milling

2023/04/22

Understanding the Different Types of CNC Machining Parts: From Turning to Milling


CNC machining is a widely used computer-controlled manufacturing process that produces high precision parts from various materials. It is largely used in the aerospace, automotive, medical, and electronics industries. Over the years, CNC machining has evolved, and today multiple techniques exist. In this article, we explore various types of CNC machining parts, with a particular emphasis on turning and milling.


What is CNC Machining?


CNC machining stands for Computer Numerical Control. It is an automated computer-controlled process that involves cutting away materials using specialized equipment such as lathes, routers, and mills to create parts to size and shape. CNC machining heavily relies on software programs that are used to create designs and execute instructions for the equipment used in the process. The result is a high level of precision and accuracy that minimizes human error while saving time and money.


Types of CNC Machining Parts


1) Turning


Turning is a CNC machining process that involves rotating the workpiece about an axis while the cutting tool remains stationary. The cutting tool, which has a sharp edge, cuts material from the rotating workpiece, creating the desired shape of the part. Turning is the most common process used in the production of cylindrical and circular parts. Examples of parts that can be produced through turning include shafts, bearing surfaces, and bushings.


2) Milling


Milling is another CNC machining process that involves the removal of material from the workpiece to create the desired shape. The cutting tool is rotated to perform a cutting action. Unlike Turning, milling allows for the production of complex shapes with varying features such as holes, slots, and pockets. Examples of parts that can be produced through milling include gearboxes, brackets, and molds.


3) Drilling


Drilling, also known as boring, is a CNC machining process that involves the creation of circular holes in metal, plastic, or other materials. Similar to turning, drilling involves rotating the workpiece while the cutting tool cuts through the material. The process is often used to create holes necessary for assembly, threading, and other functions.


4) Laser Cutting


Laser cutting is a CNC machining process that uses a powerful beam of light to cut through various materials. The beam of light is directed through a computer program, focused onto the workpiece, heating and vaporizing the material. Laser cutting is often used in the production of metal parts and also plastics, fabrics, and wood.


5) Wire Electrical Discharge Machining (EDM)


Wire Electrical Discharge Machining (EDM) is a CNC machining process that involves the use of electrical charges to remove material from a workpiece. The process involves a wire that is used to create a spark as the wire comes into contact with the workpiece, which erodes the material, creating the desired shape. Wire EDM makes it possible to create intricate parts with tight tolerances.


Conclusion


CNC machining is a crucial process in the manufacturing of parts that require high levels of precision and accuracy. Understanding the different types of CNC machining parts is crucial to selecting the best machining process. Turning, milling, drilling, laser cutting and wire EDM are some of the commonly used processes. Each of these processes has its unique characteristics, benefits, and limitations. The choice of which process to use depends on the specific requirements of the part being made. As technology continues to evolve, we expect to see even more advanced machining processes in the future.

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