Shenzhen Alu Rapid Prototype Precision Co., Ltd.

CNC milling is a precision machining process that uses computer numerical control (CNC) to automate a milling machine, removing material from a workpiece to create complex shapes, surfaces, or features. Unlike CNC turning, which rotates the workpiece, CNC milling rotates the cutting tool against a stationary workpiece, making it versatile for producing non-cylindrical, intricate parts. Shenzhen Alu Rapid Prototype Precision Co., Ltd., with its expertise in CNC machining, likely uses CNC milling extensively for prototyping and production.

How CNC Milling Works:

Workpiece Setup: The workpiece (e.g., metal, plastic, or composite) is secured on a worktable or fixture, typically using clamps or a vise.

Tool Rotation: A rotating cutting tool (e.g., end mill, drill, or face mill), mounted on a spindle, moves along multiple axes (typically X, Y, Z, and sometimes A or B for 4- or 5-axis machines).

Material Removal: The tool cuts into the workpiece, removing material to create features like slots, pockets, contours, or flat surfaces, guided by precise CNC instructions.

Programming: CAD/CAM software converts a 3D model into G-code, controlling the tool’s path, speed, and feed rate.

Finishing: Secondary operations like deburring, polishing, or coating may be applied to achieve the desired surface finish.

Key Features:

Precision: Achieves tight tolerances (e.g., ±0.01 mm) for complex geometries.

Versatility: Suitable for flat, curved, or irregular shapes, unlike CNC turning’s focus on cylindrical parts.

Multi-Axis Capability: 3-axis machines handle basic shapes; 4- or 5-axis machines enable complex, multi-angle cuts in a single setup.

Material Flexibility: Works with metals (aluminum, steel, titanium), plastics, composites, and more.

Common Operations in CNC Milling:

Face Milling: Creating a flat surface on the workpiece.

Slot Milling: Cutting grooves or channels.

Pocket Milling: Removing material to form cavities or recesses.

Drilling: Creating holes with precise diameters.

Contouring: Shaping curved or irregular surfaces.

Thread Milling: Cutting internal or external threads.

Engraving: Adding text, logos, or patterns.

Advantages:

High accuracy and repeatability for intricate designs.

Capable of producing complex 3D shapes and multi-sided parts.

Wide material compatibility for diverse industries.

Automation reduces human error and supports high-volume production.

Flexible for both prototyping and large-scale manufacturing.

Limitations:

Higher material waste compared to additive manufacturing (e.g., 3D printing).

Initial setup and programming can be time-intensive for complex parts.

Tool wear requires regular maintenance, especially for hard materials.

More expensive than simpler processes for basic shapes.

CNC milling is a key service for Shenzhen Alu Rapid, complementing our CNC turning and other manufacturing capabilities. It allows us to produce complex, non-cylindrical parts with high precision for industries like aerospace, automotive, and electronics. Our advanced CNC equipment and expertise in materials like aluminum likely enable rapid prototyping and on-demand production of milled components. 

Comparison to CNC Turning:

CNC Milling: Rotates the cutting tool, ideal for flat, complex, or multi-sided parts (e.g., brackets, enclosures). It offers greater geometric flexibility.

CNC Turning: Rotates the workpiece, suited for cylindrical or symmetrical parts (e.g., shafts, bolts). It’s faster for round components.