5 CNC Machining Basics Beginners Should Know

Learning about CNC Machining may seem like a very daunting task, but it’s not impossible to learn. It can be learned in a few days provided that you have a grasp on how machining works, as well as a basic understanding of math and CNC programming. Computerized Numerical Control (CNC) Machining is a method used to perform a wide range of manufacturing tasks, which are all carried out by computerized devices. Old school manual machines were replaced by CNC machines in the late 1970s, with the help of Computer-Aided Design (CAD) and Computer-Aided Machining (CAM). CNC machining can take incredibly small cuts such as coin, you can also hog out material to get it out of there just as fast as you possibly can. Before you invest in a CNC Machine, here are 5 CNC Machining basics beginners should know.

Program a sequence of machining operations – It is a given that you need to study the CNC machining program sequence of machining operations to understand more about CNC machines. The success of a CNC program is a direct result of the preparation done before its creation. The things that you need to know about the program sequence of machining operations are the following:

  • Determine the machining operations to be performed.
  • Decide the machining order (the order of machining operations is the most important).
  • Do the Math. The idea is to avoid breaking your train of thought while programming to perform the calculation.
  • Consider the work-holding device. Then, you also need to consider cutting tools.
  • Write the documentation for future preferences.

Learn about CNC machines and tools – The function of the Computer Numerical Control (CNC) machine is taking digitized data, while a computer and CAM program is used to control, automate, and monitor the movements of a machine. The CNC controller works together with a series of motors and drives components to move and control the machine axes, executing the programmed motions. There are also many types of CNC machines, which can be classified into the following categories based on different methods. There are 7 Types of CNC machine tools:

CNC Machines are sophisticated metalworking tools that can create complicated parts required by modern technology.

CNC software and G-code – As we all know CNC machines are controlled by a process that uses code, often generated using computer software to control the movement of cutting tools. CNC machining software is also often referred to as CAM (computer-aided design) software is used to manufacture workpieces on your CNC machine. And of course, the G-codes, also called preparatory codes, is any word in a CNC program that begins with the letter G. Generally it is a code telling the machine tool what type of action to perform, such as Rapid movement (transport the tool as quickly as possible in between cuts) Controlled feed in a straight line or arc.

Understand feeds and speeds – It refers to two separate velocities in machine tool practice, cutting speed and feed rate. They are often considered as a pair because of their combined effect on the cutting process. Feed rate and cutting speed determine the rate of material removal, power requirements, and surface finish, and improving these two can get better tool life, surface finish, and shorter machining time.

Basic setup of a CNC machine – Measurement and setup are critical for CNC machining services and processes. You can take crash courses to learn more about the basic setup of the CNC machines. But the most basic thing you gonna need is to use the calipers, micrometers, dial test indicator, edge finder, and other measuring tools to confirm precision and accuracy.

Learning the basics of CNC machining for beginners is a bit hard at first but if your already familiar with it you can be a pro after learning all the things that you need to know. If you’re interested in buying a used machine, make sure to look through our used CNC Machine inventory. Contact us today and we’ll help you find the right machine that’s perfect for your application.

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Section 179 Deduction Calculator

This Section 179 Deduction Calculator can help you decide whether or not to purchase or lease equipment in the current tax year!

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S&M Machinery partners with Complete Capital Services for all your machinery financing needs. Visit them to find out more:

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