Core Structure: Two or three rotating thread rolling rollers
Processing: The workpiece is fed between two rotating rollers and formed by rotational rolling.
Classification: Two-axis (general purpose), three-axis (specifically for pipe fittings, higher precision)
Precision : The three-axis model uses equal triangular support, resulting in better roundness and concentricity.
Workpieces: Two-axis is universal; three-axis is particularly suitable for thin-walled pipe fittings (such as oil pipe joints, air conditioning pipes).
Automation: An automatic feeding device can be added to achieve fully automated production.
1. Wire Feeding & Straightening
Coiled wire is automatically fed and straightened for uniform threading.
Precision sensors ensure consistent wire positioning.
2. Thread Rolling Process
Two or three hardened rollers press against the nail shank under high pressure.
The cold-forming process displaces metal to create perfect helical or annular threads without cutting or removing material.
No heat generation = No structural weakness in the nail.
3. Quality Control & Output
Laser measurement ensures thread depth and pitch accuracy (±0.02mm tolerance).
Automatic sorting rejects defective nails in real time.
Finished nails are ejected into a collection bin, ready for packaging
Specifications: Maximum machining
diameter: Φ25-80mm; Pitch range: 0.5-8mm;
Spindle speed: 0-50rpm (variable frequency adjustable);
Maximum rolling force: 100KN;
Main motor power: 11kW;
Equipment weight: 3000kg
Core Advantages
No Cutting: Plastic deformation produces no metal chips, resulting in near 100% material utilization.
Increased Strength: The rolled thread surface undergoes work hardening, increasing strength and hardness, significantly improving fatigue strength.
Excellent Surface Quality: Surface roughness surpasses that of turning, milling, and grinding.
Long Die Life: The rolling die has a long lifespan, suitable for mass production.
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