CNC Machining

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A Sneak-Peek at the World of CNC Machining

CNC machining can be defined as the manufacturing process which includes the use of computers for controlling machine tools. The machine tools in this process work as per the program prepared with coded alphanumeric data. Usually known as G-code, the CNC machining language controls essential features such as motions of the tool, feed rate, depth of cut, location, speeds and functions of turning spindle or coolant on and off.

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Components of CNC Machining

A CNC system usually comprises three basic components which are


  • Part program
  • Machine Control Unit
  • Machine tool

Applications of CNC Machining

CNC machining is used for both for machine tools and non-machine tools. It is often used for lathe, drill press, grinding unit, milling machine, laser, sheet-metal press working machine and tube bending machine. In the non-machine tool category, CNC machining is used in welding machines, electronic assembly, tape laying and filament winding machines for composites.

Advantages of CNC Machining


  • CNC machining provides 100 percent accuracy in manufacturing.
  • It reduces production time.
  • It offers more manufacturing flexibility
  • It gives simpler fixturing
  • It is good for contour machining
  • It decreases human errors
  • It is more precise than manual machining
  • It can produce complex shapes including three-dimensional shapes
  • It can be repeated in exactly the same manner over and over again.

Working of a CNC Machine

Due to the mentioned qualities, CNC Machining is mostly used in jobs which require a high level of precision or very repetitive tasks.CNC machining is used in manufacturing metal as well as plastic parts. Let’s see how it works.

First a 2D or 3D CAD drawing is prepared and a code which could be understood by the CNC machine is created. The program is fed into the system and an operator runs a test of the program. This is usually done to make sure that the code runs properly. Known as "cutting air" this trial run is one of the most crucial steps as any mistake with speed and position would result into a damaged machine.
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In The End

The program for CNC machining is stored in the memory of the computer and it is quite easy for the programmer to write the codes and edit the programs. Interestingly, these programs don’t have to be repeated again and again and could be used for different parts as per the requirement.

About Us

Associated Machine & Fabrication Inc.

Associated Machine & Fabrication Inc. is the biggest quality machine and fabrication AS9100C registered company which provides quality machining and welding for companies in the medical, aerospace, defense and commercial industries. The company is focused on crafting products of high precision and high quality for aerospace, medical and commercial industries. Backed by its experienced team the company is able to fabricate a variety of parts and products including the Conventional machining, CNC turning, and CNC milling.