Modular In-Die Staking & Coining Station

Product Detail:

Staking Force & Process Parameters

Force range: 1.5 to 8 kN per point, adjustable via nitrogen spring pressure. Staking diameter from 1.5 to 6 mm.

Cycle rate synchronized to press speed up to 60 SPM; forming sequence completed within the 180° dwell zone of the press rotation.

Tooling Material & Tribology

Stake punch: DC53 cold work die steel, vacuum hardened to HRC 62, with a CrTiN (chromium titanium nitride) PVD coating to resist adhesive wear from aluminum and brass.

Anvil insert: SKH51 high-speed steel, tempered to HRC 61, and highly polished on the forming surface to avoid material transfer.

Forming Sequence & Quality Monitoring

Upper stake punch advances into the pre-assembled parts, upsetting a hollow boss or tab to create a tight mechanical lock.

The lower anvil supports the assembly, preventing part collapse. Coining pressure is maintained for a short dwell time.

An inline piezoelectric force sensor captures the force-displacement curve, and a programmable tolerance window rejects any assembly outside the ideal force path, signaling the press to stop.