CNC Service

CNC Milling

3- and 5-axis milling for complex part geometries.

CNC Turning

Efficient turning for shafts, washers, and cylindrical components.

What is CNC machining?

CNC is the abbreviation of Computer Numerical Control. CNC machining is any kind of machining process controlled by a computer. Computer automation can manufacture parts faster more accurately and more precisely than parts produced by manual machining better suited to complex geometries. CNC also reduces the amount of manual machining work that would otherwise be done by humans. While they dont machine every part themselves people are critical to the programming and operation of the machinery to ensure that every operation runs smoothly.

How does CNC machining work?

Programs now used for CNC machining are written in G-code and are usually created automatically by CAM software. CAM or Computer Aided Manufacturing software produces G-code for a 3D model for a given tool and workpiece material. This G code controls the CNC machine i.e. the movement of the tool workpiece and any tool changes. It even has commands to turn the coolant and other auxiliary components on or off. CNC machining can be used on a variety of materials the most common being aluminum steel brass ABS Delrin and nylon. But in fact almost any hard material can be CNC machined.

About the CNC machining process

CNC or Computer Numerical Control Machining is a subtractive manufacturing method that uses a combination of computer control and machine tools to remove layers from a stationary material. The desired cuts in the metal are programmed according to the corresponding tools and machines which perform the machining tasks in an automatic manner.

Types of CNC Machining

Depending on the type of part that needs to be machined there are different types of CNC machines that are best for the job. CNC milling uses CNC milling machines that consist of multi-axis systems (3 4 or 5 axes depending on part complexity). CNC turning involves a lathe which usually has 2 axes and uses a circular motion to cut the workpiece. An electrical discharge machine (EDM) uses electric sparks to form a workpiece into the desired shape. Gear hobbing is another machining process used to cut gears splines and sprockets. Other CNC machine types include plasma cutters and water jet cutters.

CNC and 3D printing

CNC machined parts are more functional and generally have superior production quality and finish compared to part manufacturing via additive manufacturing. Therefore CNC machining is often used in the mid to late stages of development when the part is ready for functional accuracy testing.

CNC Design Considerations

While most details such as tooling spindle speed tool type and depth of cut are handled in the machine shop there are some key things you can do when designing your parts not only to make sure they are manufacturable but also to make sure you Develop lean products that wont break the bank.