Knowledge points of double-edge taper ball end milling cutter

1. Basic structure
Double-edge design: two cutting edges are symmetrically distributed, taking into account cutting efficiency and balance, and reducing vibration.

Tapered neck: the tool handle gradually decreases to the tool head, enhancing rigidity, suitable for deep cavity processing, and avoiding interference.

Ball head end: high R angle accuracy (±0.01mm common), used for smooth milling of complex surfaces and 3D contours.

2. Core advantages
✔ Efficient chip removal: the taper design expands the chip space and reduces the risk of built-up edge.

✔ Strong rigidity: compared with straight shank milling cutters, the taper structure has improved vibration resistance and extended tool life.

✔ Applicable in multiple scenarios: high-precision surface processing of mold steel, titanium alloy, aluminum alloy and other materials.

3. Key parameters
Blade diameter (D): commonly 2-20mm, affecting processing accuracy and cutting volume.

Taper angle (θ): usually 3°-10°, the larger the angle, the stronger the ability to avoid deep cavities.

Coating options: TiAlN (high temperature resistance), DLC (wear resistance), etc., suitable for different materials.

4. Typical applications
Mold industry: mobile phone case molds, automotive interior parts and other complex cavity finishing.

Aerospace: impellers, turbine blades and other curved parts.

Precision parts: medical equipment, optical lens molds.

5. Precautions for use
⚠️ Speed ​​and feed: need to be adjusted according to the material to avoid excessive wear of the ball head tip (refer to the manufacturer's parameter table).
⚠️ Cooling method: deep cavity processing recommends internal cooling oil spraying to reduce the risk of thermal deformation.
⚠️ Clamping accuracy: The taper handle needs to be matched with a high-precision chuck (such as a hydraulic tool holder) to prevent radial runout.