Customer Case: High-Speed Machining Solution for Automotive Mold Base
Customer Requirement: A large automotive mold manufacturer needed to batch-machine large bumper injection mold bases (Material: P20, Dimensions: 1500×800×400mm), with demands for increased efficiency and guaranteed cavity accuracy.
Solution:
- Rough Machining: Employed a φ25R5 bull nose cutter for high-depth-of-cut, high-feed-rate layer milling to quickly remove the bulk of the material.
- Semi-Finishing: Switched to a φ12 ball nose cutter for 3D constant-offset machining of the cavity and slider areas, uniformly leaving a 0.3mm allowance for finishing.
- Finishing: Utilized a φ8 ball nose cutter for high-speed finishing, with a small stepover to ensure surface quality. For deep ribs and corner clearance areas, a φ4 cutter was used for local rest machining.
Results: This solution reduced the machining time per mold base by 18%, with cavity profile accuracy consistently maintained within ±0.02mm, fully meeting the customer's mass production requirements.
