CNC 4 軸加工により回転軸を追加 (通常はA軸, X軸を中心に回転, またはB軸, rotating about the Y-axis) to traditional 3-axis (x, Y, and Z linear) 機械加工. By linking the rotary and linear axes, it enables efficient machining of complex workpiece surfaces, inclined holes, and multi-angle contours. Below, we explain:
High Programming Complexity
The linkage paths of the rotary and linear axes must be considered to avoid tool interference (例えば, collisions between the tool and the workpiece or fixture during rotation). CAM software (such as UG or Mastercam) is typically used to automatically generate toolpaths and perform simulation verification.
Strict Precision Requirements for Rotary Axis
The positioning accuracy (generally around ≤±10″ for most machines, and up to ≤±5″ for high-end equipment) と再現性 (≤±3″) of the rotary axis directly impact machining quality and require regular calibration (例えば, using a laser interferometer). さらに, the concentricity error between the rotary axis and the worktable should typically be controlled within 0.01 mm to avoid radial dimensional deviations of the workpiece.
Matching Tools and Cutting Parameters
When machining inclined or curved surfaces, the cutting angle constantly changes. It is important to select tools suitable for multi-angle cutting (such as ball-end milling cutters and bullnose milling cutters). Dynamically adjust the feed rate (F value) and spindle speed (S value) to avoid overcutting and poor surface quality.
Fixture Design Must Adapt to Rotation
The fixture must be lightweight and not interfere with the movement of the rotating axis, while ensuring rigid clamping of the workpiece (especially at high rotation speeds, where centrifugal force can cause the workpiece to loosen). Hydraulic chucks, indexing heads, or custom fixtures are typically used. The clamping force should be calculated based on the workpiece weight and rotational speed (例えば, at 1000 rpm, the clamping force should be greater than the centrifugal force of the workpiece, often designed with a ≥1.5× safety factor).
RapidEfficient について
RapidEfficient は、高精度 CNC 加工を専門としています。 18 長年の経験. Its products cover medical, コミュニケーション, 光学, ドローン, intelligent robots, 自動車, およびOA部品.
The company’s CNC machining centers include four-axis, 5軸, and linkage machine tools, 精密プロジェクターも装備されています, three-coordinate measuring machines, 分光計, and other precision testing equipment.
Machining accuracy: まで 0.01 mm
Testing accuracy: まで 0.001 mm
