In recent years, the widespread adoption of robotic automatic welding technology in the construction machinery industry has significantly raised the standards for the precision and quality of blanking parts. Traditional cutting equipment is no longer sufficient to meet the demands of automated welding and high-precision assembly. Moreover, as the national "industrialization and informationization" policy continues to advance, intelligent and information-based cutting equipment has become a key trend in modern construction machinery manufacturing.
**Application Status of Cutting Technology in Construction Machinery**
**1. Characteristics of Cutting Parts and Process Requirements**
Cutting and welding are closely connected in the construction machinery industry, with the quality of cutting directly influencing the welding outcome. As robotic automatic welding becomes more prevalent, new demands have emerged regarding the accuracy and quality of plate cutting.
Key features of the construction machinery industry include:
- Most cutting parts are made from low carbon steel (Q235) or low alloy high-strength structural steel (Q345), with limited use of non-ferrous metals.
- The majority of welded components are made from medium to thick plates, with a large volume of cutting work involved. For example, plates between 8–30 mm in thickness account for over 80% of total steel consumption.
- Cut parts often have complex shapes and large sizes, making them prone to deformation after cutting.
- With the rise of robotic welding, there are stricter requirements for dimensional accuracy and cumulative size control.
**2. Application of Cutting Technologies**
To meet the technical requirements of the construction machinery industry, three main cutting technologies—flame, plasma, and laser—are widely used. As cutting technology advances, the application of plasma and laser cutting has become dominant, while flame cutting still plays an important role in certain scenarios.
Key trends in equipment selection include:
- **Collaborative use of three cutting systems**: Plasma cutting is typically used for plates between 8–25 mm, offering cost-effectiveness and efficiency. Laser cutting is ideal for thin plates below 8 mm, while also being suitable for thicker plates requiring high precision. Flame cutting remains popular for plates over 25 mm due to its high efficiency and low cost.
- **Widespread use of fine cutting technology**: With the introduction of highly automated robotic welding lines, dimensional accuracy has become critical. Fine plasma and laser cutting are now the industry standard, with over 80% of cutting equipment using these technologies.
- **Efficiency is key**: Multi-head cutting systems have been widely adopted to increase productivity. Many manufacturers use double or four-head plasma cutting, while some even use 12-head flame cutting for thick plates.
- **High power and large format**: Due to the large size of construction machinery parts, wide-format cutting equipment is increasingly preferred. High-power plasma and laser systems are also becoming more common to support advanced cutting needs.
**Development Trends of Blanking Factories in the Construction Machinery Industry**
As the manufacturing level of the construction machinery industry improves, the limitations of traditional cutting methods are becoming more apparent. Current issues include high labor intensity, poor working conditions, low automation levels, and challenges in digital management. To address these, the concept of a digital automatic cutting factory has emerged.
**1. System Composition of Digital Automatic Cutting Factory**
A digital automatic cutting factory integrates CNC cutting equipment, intelligent driving systems, steel plate transfer trolleys, production management systems, and warehouse management systems. This setup enables full automation of material handling, cutting, and data monitoring, leading to efficient and real-time operations.
Key functions of each component include:
- **Intelligent driving system**: Manages lifting, positioning, and transport of steel plates throughout the process.
- **Laser automatic positioning and cutting**: Ensures accurate and consistent cuts, with real-time feedback to the system.
- **Production Management System (PMS)**: Oversees order management, part libraries, and scheduling.
- **Warehouse Management System (WMS)**: Optimizes logistics and storage based on demand.
**2. Features of Digital Automatic Cutting Factories**
Digital automatic cutting factories revolutionize traditional production models by reducing manual labor and enabling fully digital management. Operators can focus on supervision rather than physical tasks, while decision-making, planning, and material control are all handled through integrated systems.
This integration of automation and information technology not only boosts efficiency but also aligns with the national push for industrial and digital transformation. As such, digital automatic cutting factories are set to become the future direction of the industry, driving significant progress in construction machinery manufacturing.
For more updates and insights, visit Metalworking Online and explore the latest developments at the Essen Special Report.
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