Automotive Tier-1 Sweet Spot | 320 Ton / 3200 kN
The Automotive Tier-1 Sweet Spot Fine Blanking Press
Why is 320T the most specified fine blanking tonnage worldwide? Because it covers the broadest range of automotive sheet steel parts, from seat recliner gears to brake backing plates, all within a single platform. The HF-320 processes C45 and 16MnCr5 case-hardening steels up to 12 mm thick, producing parts with fully work-hardened shear edges that frequently eliminate secondary machining.
Typical applications: Seat recliner gears, clutch plates, brake backing plates, lock cylinders, transmission gear blanks, door latch components
Consider a seat recliner gear production line: the part demands 0.05 mm flatness, 100% shear edge on gear tooth profiles, and consistent hardness across the shear zone for fatigue durability. Conventional stamping produces die-roll on the tooth tips and tear fracture at the tooth root, requiring secondary hobbing to achieve functional gear geometry. The HF-320's triple-force system solves this at the press. Its 1600 kN V-ring impingement clamps the material in compression before the punch engages, while 800 kN counter-pressure supports the part from below during shearing. The independently programmable forces let you tune V-ring pressure per part geometry, eliminating die-roll on gear tooth profiles and maintaining the compressive stress state that produces a work-hardened shear edge rated for cyclic loading.
At 70 strokes per minute with a 300 mm maximum feed width and ±0.1 mm pitch accuracy, the HF-320 balances throughput and precision for mid-volume automotive contracts. Typical deployments include dedicated cells for clutch-plate inner and outer rings, gear blanks for transmission shafts, and brake caliper mounting plates where burr-free edges and flatness tolerances under 0.05 mm are required straight off the press. The 600 x 600 mm working table and 620 mm die height accommodate multi-station progressive dies, enabling compound part geometries in a single stroke. For Tier-1 suppliers running mixed part families, the independently adjustable blanking speed (5-50 mm/s) allows optimization per material grade without tooling changes.
Key Features
- ✓ Triple-action hydraulic system with 1600 kN V-ring and 800 kN counter-pressure, independently programmable for safety-critical gear profiles
- ✓ Whole-welded frame, FEA-verified for ±0.05 mm deflection under side-loading on asymmetric gear geometries
- ✓ 70 SPM cycle rate with 300 mm feed width and ±0.1 mm pitch accuracy for mid-volume Tier-1 contracts
- ✓ Tunable blanking speed (5-50 mm/s) to optimize shear-zone quality across C45, 16MnCr5 and HSLA grades
- ✓ 600 x 600 mm table with 620 mm die height for multi-station progressive and compound dies
