High Efficiency Head Machine

A two-strike single-die high efficiency forming machine is a specialized industrial device used to manufacture fasteners like screws, bolts, and rivets through cold forming, a process that shapes metal at room temperature without heating. This method ensures high material utilization, improved mechanical properties, and rapid production.

Below is a detailed breakdown of its working principle:

1. Material Feeding

The process begins with a coiled metal wire (typically steel, aluminum, or copper) fed into the machine through a straightening mechanism. The wire passes through rollers to remove curls and ensure uniformity. A feeding gripper then advances the wire incrementally to a cutting station, where it is sheared into precise cylindrical blanks ("slugs") based on the required fastener dimensions.

2. First Striking (Pre-forming)

The cut slug is transferred into the single die cavity, which has a fixed shape matching the final product's geometry. The first punch, driven by a mechanical crankshaft, strikes the slug with high force. This initial deformation partially forms the screw head or shank, compressing the metal into a preliminary shape. The die restrains lateral movement, ensuring controlled material flow.

3. Second Striking (Final Forming)

Immediately after the first strike, the second punch (often a secondary tool within the same die assembly) performs a follow-up strike. This step refines the pre-formed slug into its near-final shape. The two-strike system allows complex geometries to be achieved in a single die, reducing tooling costs and alignment errors.

4. Ejection

After both strikes, an ejector pin pushes the finished part out of the die cavity. The ejected fastener is then collected or conveyed to secondary processes (e.g., threading, heat treatment, or coating).

● Efficiency: Two strikes in one cycle minimize idle time, boosting output.

● Precision: The single-die setup ensures consistent alignment, reducing defects.

● Material Savings: Cold working eliminates material loss from heating or machining.

● Strength: Cold forging enhances grain structure, improving product durability.

The high efficiency forming machine is ideal for mass-producing small-to-medium-sized fasteners with simple to moderately complex designs. Its compact workflow and energy efficiency make it a cornerstone of modern fastener manufacturing.