It is important to know about the different types of CNC machining processes to understand the basics of what is CNC machining. Here is a discussion of the most popular CNC machining processes:
CNC Drilling
CNC drilling is a type of machining process that uses a drill bit to create holes in the workpiece. CNC drilling benches are the most common types of CNC machines as they are used in combination with all other equipment and processes. The diameter of the holes created by CNC drills is limited. Therefore, these machines are generally used in hole punching for screws or aesthetic reasons.
CNC Milling
CNC milling uses a stationary workpiece against a high speed rotating cutting tool to machine parts. CNC mills come in multiple axes options to suit various requirements. The rotating cutting tool comes in many shape and size variations. Therefore, there are different types of CNC mills such as end milling, face milling, slab milling machines, etc.
CNC Turning
CNC turning is a type of machining process that uses a stationary cutting tool and a rotary workpiece. The workpiece is brought closer to the stationary cutting tools which symmetrically remove material. Turning machines are usually applied for machining of cylindrical parts. For instance, machining of turbine cylindrical holes is done with turning and drilling machines.
CNC Routing
CNC routing is the method where a cutting tool moves across the workpiece through its thickness to pierce the workpiece and dividing it into subparts. The cutting action of CNC routers is accomplished due to friction between the workpiece and the cutting tools. It is sometimes also known as the CNC cutting process.
CNC Grinding
CNC grinding is a surface finishing process where abrasive wheels are rubbed against a workpiece to remove a minimal amount of material. CNC grinders come in varying roughness levels, so an adjustable amount of material can be removed. The resulting finished product has a smoother surface. CNC grinders can also remove the physical defects of other manufacturing operations, such as welding.