What is CNC Machining

CNC stands for “computer numerical control”, this means that a computer software is instructing the machine vs. a live operator guiding the machine tool. CNC machining maximizes efficiency by removing the possibility of human error; of course there is still the possibility of the machine making mistakes – typically due to it cutting in multiple directions simultaneously but it is less frequent. Visit our CNC Machining page to learn more about the benefits of CNC machines.

CNC Process

The CNC machining process is fairly straightforward. The first step is designing the CAD model of the part(s) you need for your project. The second step is then converting that CAD drawing into the CNC software. Once the CNC machine has the design you will need to prep the machine and the final step would be executing the machine operation. An additional step would be to inspect the completed part for any errors.

CNC Milling and Turning

CNC milling and turning are similar yet they have a few key differences. CNC milling rapidly rotates a cutting tool against a stationary workpiece. The results are typically flat or sculptured pieces. CNC turning on the other hand rapidly rotates a cutting tool against a rotating workpiece. CNC turning often results in smaller parts than milled projects; this allows for turned parts to be produced at a quicker rate than milled parts.

Another notable difference between milling and tuning is the type of tool used. Turned parts are created by a single point turning tool whereas a milled part requires a multi-point cutting tool.

Additional Services

Once your part has been created you may be looking at different types of finishes.

  • As Milled – you may still be able to see some of the machine tool marks left behind on the part
  • Bead Blast Finish – small glass beads are used to give the part a matte look
  • Anodizing – provides a clean, uniform, corrosion resistant coat
  • Powder Coat Finish – the part is spray with powdered paint and then put into the oven to bake. This creates a corrosion resistant layer to protect the part.

Contact Us

With our ISO 9001 registration and AS9100 certification, ADC meets your exact specifications using state of the art equipment, a strong management team, and a highly skilled, stable workforce. Contact us for your next CNC project.