CNC 4轴加工增加了一个旋转轴 (通常是A轴, 围绕X轴旋转, 或B轴, rotating about the Y-axis) to traditional 3-axis (X, 是, and Z linear) 加工. By linking the rotary and linear axes, it enables efficient machining of complex workpiece surfaces, inclined holes, and multi-angle contours. 以下, we explain:
High Programming Complexity
The linkage paths of the rotary and linear axes must be considered to avoid tool interference (例如。, 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) 和可重复性 (≤±3″) of the rotary axis directly impact machining quality and require regular calibration (例如。, using a laser interferometer). 此外, 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 (例如。, at 1000 rpm, the clamping force should be greater than the centrifugal force of the workpiece, often designed with a ≥1.5× safety factor).
快速效果
Rapideffficed专注于高精度的CNC加工 18 多年的经验. 它的产品覆盖医疗, 通讯, 光学, 无人机, 智能机器人, 汽车, 和办公自动化零件.
该公司的CNC加工中心包括四轴, 五轴, 和连锁机床, 并配备精密投影仪, 三坐标测量机, 光谱仪, 和其他精确测试设备.
加工精度: 到 0.01 毫米
测试准确性: 到 0.001 毫米
