Boosting Productivity: Working Principles and Selection Guide for CNC Wire Bending Machines

1. Core Working Principles

1.1 Straightening Phase

Straightening Rollers: 28 sets of precision-polished Cr12 rollers eliminate wire stress, achieving straightness error <0.1mm—a critical foundation for high-precision bending machine operations.

1.2 Feeding & Forming

Feeding Mechanism: 3-5 groups of feeding wheels (speed: 27-90 m/min) transport wire to the bending zone.

5-Axis Servo Synergy: Enables complex shapes (e.g., spirals, multi-angle bends) in a single step. For heavy-duty tasks, a hydraulic bending machine may supplement force control.

1.3 Cutting & Ejection

SKD11 Blades (hardness 58-62°): Deliver clean cuts with minimal burrs.

Auto-Ejection System: Reduces downtime, ensuring continuous production.

2. Key Selection Criteria & Industry Adaptability

2.1 Wire Compatibility

Diameter Range:

2-6mm machines: Ideal for bathroom hooks, crafts.

8-16mm machines: Suit heavy-duty structures (e.g., shelves).

Material Compatibility: For stainless steel, opt for high-power servo systems (e.g., 20kW models) to avoid overload.

2.2 Servo System Configuration

Power Requirements:

Small Parts (2-6mm): Total 8.1kW (2.3kW feeding + 1.5kW bending).

Heavy Wires (8-16mm): Total 20kW (7.5kW feeding + 7.5kW bending).

Brand Strategy: Domestic servo systems offer cost efficiency; imported brands excel in ultra-high precision scenarios.

2.3 Productivity Parameters

Bending Speed: 300 bends/min for bulk orders, reducing cycle time to 15 seconds/part.

Data Storage: 4,000 programmable steps support flexible multi-product workflows.

2.4 Precision & Stability

Industry Standards: ±0.5mm for general use; ±0.2mm custom models for medical/aerospace.

Structural Rigidity: Reinforced frames (e.g., 8-16mm models weigh 2,100kg) prevent vibration during high-speed runs.

2.5 Scalability & Support

IoT Integration: Choose models with USB data ports for seamless MES connectivity.

Localized Service: Prioritize suppliers with spare parts inventory and rapid response.

3. Industry-Specific Selection Strategies

3.1 Automotive Components

Solution: 5-axis servo + SKD11 molds (8-16mm machines) for seat wire forming (±0.3mm accuracy).

3.2 Home Appliance Manufacturing

Solution: 3-8mm machines with 90 m/min feed speed, producing 20,000 metal mesh panels daily.

Conclusion

Selecting the right CNC bending machine—or a hydraulic bending machine for high-torque needs—requires balancing material compatibility, precision, and capacity. By aligning technical specs with industry demands, manufacturers can maximize efficiency and ROI.