Book Image

A Tinkerer's Guide to CNC Basics

By : Samer Najia
5 (1)
Book Image

A Tinkerer's Guide to CNC Basics

5 (1)
By: Samer Najia

Overview of this book

Until recently, Computer Numerical Control (CNC) machines belonged to the realm of heavy industry, but as technology becomes cheaper and smaller, these machines now can be used in home workshops. It’s not easy to get started, though, but thanks to this guide, you’ll be ready to take on a variety of projects in no time. A Tinkerer’s Guide to CNC Basics contains everything you need to get set up at home with computer-controlled machining and fabrication. Sparing you the theory, this project-laden guide helps you learn by doing. Once you’ve got to grips with the principles of CNC and installed the 3018 Pro CNC machine, you’ll gradually move from simple projects such as basic engraving to more complex milling and machining techniques. You’ll even learn how to upgrade your machine to accomplish more sophisticated designs. The plethora of projects in this book will keep you busy and give you the practice you need to get started with your computerized workshop. By the end of the book, your computerized home workshop will be one step closer to realization, and your machining skills will be taken to the next level.
Table of Contents (15 chapters)
11
Chapter 11: Building a More Capable CNC Machine

A fifth axis

Machines with five axes are unique in that they are able to carve/cut not just on the upward-facing surface but also on all surfaces, bar the one where the workpiece is held. If you think about the engine block of your car, that likely was CNC-machined this way. There are some great videos out there of this, such as the following:

  • This video takes a huge aluminum cylinder and turns it into a miniature V8 engine block. Look at all the coolant it uses, and as it carves and cuts, the machine also switches toolheads for each specific job. On top of this, not only does the machine drill holes but it also taps them – spectacular! Here’s the link to the video: https://www.youtube.com/watch?v=wHstzxuryMk.
  • Remember our chapter on the 4th axis? Here’s a video that cuts an engine block with four axes, but unlike our modification, you can’t sacrifice one of the axes for it. Here, you have X, Y, Z, AND Theta (the degree of rotation). No, it&...