Numerical Control Milling: Basic Processing Technology for Flat and Irregular Structures

If CNC machining is good at "circular parts", CNC milling is the basic processing method for "non rotating irregular parts" and is the mainstream solution for machining mechanical structural parts and sheet metal bending.

working principle

The milling cutter rotates at high speed, and the workpiece performs CNC feed motion in the X/Y/Z directions with the worktable. Through continuous cutting with multi blade cutting tools, features such as planes, steps, grooves, cavities, surfaces, gears, etc. are machined. The core features are tool rotation, workpiece movement, and the ability to process various asymmetric planar and three-dimensional structures.

Divided into vertical milling and horizontal milling according to the spindle direction: vertical milling has the strongest universality and is suitable for flat and cavity parts; Horizontal milling is suitable for heavy-duty cutting, gear machining, and side multi station machining.

Process Characteristics

Wide structural adaptability: It can process almost all flat, groove, and contour features of non rotating parts, and is a universal process for mechanical structural components;

Flexible tool selection: By changing different milling cutters, flat milling, slotting, chamfering, and surface machining can be achieved, adapting to diverse features;

Moderate cost threshold: The equipment and programming costs are lower than those of machining centers, making it suitable for machining parts with simple structures and fewer processes.

Typical scope of application

Core compatible parts: equipment base, box cover plate, irregular connecting plate, rough machining of molds, racks, ordinary mechanical structural components, etc;

Accuracy level: ordinary CNC milling IT8~IT10, high-precision CNC milling can reach IT7~IT8;

Adaptation scenarios: Parts with flat surfaces, grooves, simple contours, and fewer processes, as well as rough and semi precision machining of large structural components.