Torsion Spring Bending Machine | Double Springs Formed Fast
A 3D wire bending machine coils and forms double torsion springs from straight steel wire in one cycle - coil bodies, bridge and legs all in a single run.
Key Specifications
- Materials
- Straight steel spring wire
Key Features
- Coils tight torsion bodies directly on the rotary disc
- Forms both coil bodies and connecting legs in one cycle
- Servo feed controls coil count and leg lengths precisely
- Clean wire ends - no burrs from secondary cutting
How Are Double Torsion Springs Made on a 3D Wire Bending Machine?
Short answer: By coiling and bending in one program. This factory video shows a CNC 3D wire bending machine winding tight coil bodies around its rotary disc, then forming the bridge and legs, producing complete double torsion springs from straight steel wire in a single automatic cycle.
What the Video Demonstrates
| Stage | Equipment | Result |
|---|---|---|
| Feed | Servo drive and clamp | Wire advanced to exact length |
| Coil | Rotary coiling disc | Tight, even torsion coil body |
| Form | Bending arms at the disc | Bridge and legs shaped in sequence |
| Finish | Cut and eject at station | Completed double torsion spring |
Key Applications
- Double torsion springs for hinges, lids and return mechanisms
- Wire forms combining coils, cranks and legs in one part
- Sample and small-batch spring work without a spring coiler
- Hardware factories adding spring capability to a wire bender
3D Wire Bender vs. Dedicated Spring Coiler
| Criterion | Spring coiler | 3D wire bending machine |
|---|---|---|
| Coil bodies | Yes | Yes, on the rotary disc |
| Complex legs and bridges | Secondary op | Same cycle |
| Part variety | Springs only | Springs, cranks, pins, forms |
| Setup for new part | Cam changes | Program and tooling change |
FAQ
Can this machine produce springs with two coil bodies? Yes - the video shows a double torsion spring: both coils, the bridge and the end legs are completed in one run.
How is coil pitch and diameter controlled? The servo feed sets wire advance while the rotary disc wraps each turn, so coil count, pitch and diameter follow the program.
Do I need a separate machine for the leg bends? No. The same bending arms form the legs after coiling, which is exactly what makes a 3D wire bender practical for mixed wire parts.