In recent years, 3D free-bending forming technology has attracted widespread attention in the manufacturing industry. The NSB-S six-axis linkage free bending system of German J.NEU company has made a significant breakthrough in this field with its advanced performance and precise control ability. At the same time, the flexible forming technology and equipment team of Nanjing University of Aeronautics and Astronautics in China has also achieved remarkable results in this field.
NSB-S six-axis linkage free bending system of German J.NEU company
The NSB-S six-axis linkage free bending system is an independent research and development achievement of J.NEU. It has the following characteristics:
- Highly flexible: The system adopts a six-axis linkage structure, which can realize free bending in multiple directions, making the forming process more flexible and diverse.
- High-precision control: Through advanced control algorithms and sensor technology, the forming process can be sensed and adjusted in real-time to achieve precise bending control.
- High efficiency: The system has the ability to quick response and high-speed forming, which can greatly shorten the forming cycle and improve production efficiency.
- Wide applicability: suitable for forming various materials, including metals, alloys, composite materials, etc.
The following table summarizes the main parameters of the NSB-S six-axis linkage free bending system:
| No | Feature name | Technical Parameters |
| 1 | Processing capacity (φ, mm) | 10-90 |
| 2 | The maximum radius of the workpiece | Unlimited |
| 3 | Workpiece minimum radius value | 2.0D～2.4D(D is the outer diameter of the curved pipe) |
| 4 | bending angle | 0°～ 360° |
| 5 | Bending axis positioning accuracy | ≤ 0.01mm |
| 6 | Feed axis positioning accuracy | ≤ 0.05mm |
| 7 | Maximum speed | 400 mm/sec |
| 8 | Weight (kg) | 6000 |
3D Free Bending Forming System at Nanjing University of Aeronautics and Astronautics, China
The three-dimensional free bending forming system developed by the flexible forming technology and equipment team of Nanjing University of Aeronautics and Astronautics has the following characteristics:
High precision: The system adopts GTS high-performance multi-axis plug-in motion controller, which can realize high-precision forming and meet the requirements of complex components.
Multi-axis linkage: the system supports multiple structures, including 3-axis, 6-axis, 6-axis parallel structure and 7-axis parallel structure, etc., with greater flexibility.
Modular design: The system adopts a modular design, with the help of intelligent pipe bending workstations for process control, improving work efficiency and optimizing production processes.
Wide application: Widely used in aerospace, rail transit, automobile, petrochemical, construction and other fields, suitable for various pipe diameters and workpiece sizes.
The following table lists the two models and their main parameters of the 3D free bending forming system of Nanjing University of Aeronautics and Astronautics:
Parameters and Features
The Chinese team’s system offers the following parameters and features:
| Parameter | TFB-S60 | TFB-S90 |
|---|---|---|
| Maximum Processing Diameter | 30-60 mm | 60-90 mm |
| Maximum Bending Radius | Infinite | Infinite |
| Minimum Bending Radius | 3.5D | 3.5D |
| Bending Angle | 0-360 degrees | 0-360 degrees |
| Feed Axis Positioning Accuracy | ≤0.05 mm | ≤0.05 mm |
| Bending Axis Positioning Accuracy | ≤0.02 mm | ≤0.02 mm |
| Maximum Speed | 330 mm/s | 330 mm/s |
| Standard Machine Model | Maximum Processing Length 3000mm, customizable up to 6000mm in increments of 1000mm. |
In conclusion
Teams in Germany and China have made significant progress in the field of 3D free-bending technology. The NSB-S six-axis linkage free bending system of German J.NEU company has become a leader in the industry with its advanced performance and precise control capabilities. The flexible forming technology and equipment team of Nanjing University of Aeronautics and Astronautics has achieved efficient and accurate three-dimensional free bending forming through innovations such as adaptive control and material adaptability.
These achievements have provided strong technical support for the manufacturing industry of high-speed EMUs and other fields, and promoted the development and progress of the industry. With the deepening of further research and practice, it is believed that 3D free bending forming technology will play a greater role in the future development and bring more innovations and breakthroughs to the manufacturing industry.
References
- [1] J.NEU GmbH. (2022). NSB-S 6-axis linkage free bending system. Retrieved from http://www.jneu.eu/
- [2] Nanjing University of Aeronautics and Astronautics. (2021). Research on three-dimensional free bending forming technology. Retrieved from http://en.nuaa.edu.cn/