Common Aluminum CNC Milling Process
There are various methods of Aluminum CNC milling to process raw materials and make them into finished products with different processes that subtract material in different ways, forming unique features on the milled parts. These processes have specialized types of cutting tools (for example, end mills, drills, reamers, etc.). Although there are many milling processes, the following are the most common in a typical CNC manufacturing workshop:
Facing Milling
Facing Milling is a process that uses the radial part of the tool as the cutting edge for more cutting action. This process is used to cut flat surfaces on the material. It should be noted that during this process, the workpiece should be fed in the opposite way to the end mill rotation. In this way, the cutting action will create a downward force, which will secure the workpiece more to the workbench. The cutter used in this process is a face milling cutter specially designed for this purpose.
Copy Milling
Copy milling involves milling all shapes of multiple axes into one material - two or three dimensions. This is the main operation in the milling process because of different subcategories. These subcategories relate to cavity milling, slotting, cycloidal milling, contour milling, etc. Tools used for this process include end mills, which have a cutting edge on the side.
Side Milling
Side milling involves cutting the material vertically to produce a flat surface. The tool used for this process is a side milling cutter where the cutting edge is located around the circumferential area of a cylindrical tool.
Hole Milling
Hole milling is the creation of hole features in the workpiece. These features include common holes, countersunk head holes, countersunk head holes, threaded holes, and point holes. The tools used to perform this process are twist drill, shovel drill, end mill, reamer, tap, etc.
Forming milling
Forming milling is more like a special milling process, as it involves shaping the cutting tool profile based on the desired shape or features realized on the workpiece, which means that the profile/profile on the cutting tool should be based solely on the shape of the target part.
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