Introduction: Why does the processing efficiency of steel bars with various specifications become an industry bottleneck?
In large infrastructure projects such as highways and high-speed railways, the processing of rebars needs to meet the requirements of multiple specifications (Φ12-Φ40mm), high precision, and mass production. Traditional single-head equipment requires frequent mold changes, with the processing time for a single rebar exceeding 3 minutes, and the manual operation error rate reaching 5%, leading to project cost overruns and delays in the construction schedule. The intelligent four-head rebar bending center, through multi-head collaborative control technology, reduces the processing time for a single rebar to within 45 seconds and keeps the error rate within 0.5mm, becoming the key equipment to solve the efficiency problem.

Keywords:Four-head coordinated control, multi-specification rebar processing, improved processing efficiency, Xuhui intelligent equipment

Industry Technical Pain Points: The Three Efficiency Traps of Traditional Equipment
STEP1：Mold replacement takes a long timeThe single-head equipment requires manual mold changes for processing different specifications of rebars. Taking the transition from Φ25mm to Φ32mm rebars as an example, mold changes necessitate a 15-minute shutdown, with over 20 changes per day, totaling to 5 hours of cumulative downtime.
STEP2：Long processing cycle for single rootTraditional equipment requires four steps of operation: "material feeding - positioning - bending - return to original position", with a processing cycle of 180 seconds per single steel bar, and manual operation heavily relies on experience, with a bending angle deviation rate exceeding 2%.
STEP3：Poor multi-specification compatibilityThe maximum bending diameter for single-head equipment is usually ≤ Φ32mm. Processing Φ40mm rebar requires a customized mold, and the bending radius is limited, which cannot meet the needs of complex structures.
A high-speed rail project case shows that when processing 500 tons of steel bars with traditional equipment, the time spent on mold replacement accounts for 35%, the人工calibration error leads to a rework rate of 12%, directly increasing the cost by 280,000 yuan.

Introduction to Corporate Technical Strength: Xuhui Four-Machine Head Synchronous Control Technology Analysis
Xuhui (Shandong) Intelligent Equipment Co., Ltd. is located in the Jining Machinery and Engineering Equipment Manufacturing Base in Shandong, focusing on the research and development of CNC steel bar equipment for 12 years. Its intelligent four-head steel bar bending center has overcome industry pain points through three major technological breakthroughs:
STEP 1: Multi-head independent servo control technologyThe equipment is configured with 4 independent servo motors, each head can be controlled separately for bending angle (0-180°), speed (0-60rpm), and radius (R50-R500mm). The PLC system synchronizes and coordinates the movement of the 4 heads, achieving "one feeding and four heads bending simultaneously". For example, when processing L-shaped steel bars, after Head 1 completes a 90° bend, Head 2 immediately starts a 135° reverse bend, with no manual intervention required, reducing the processing time per bar to 45 seconds.
STEP 2: Intelligent Mold Library and Automatic Switching SystemThe equipment is built-in with 20 mold libraries, supporting full specifications from Φ12-Φ40mm. When switching processing specifications, the system automatically calls the corresponding mold, completes the replacement through a pneumatic device, and takes only 8 seconds. Taking the example of processing 200 rebars daily (including 5 specifications), the total time for mold replacement is reduced from 300 minutes to 26 minutes, with an efficiency increase of 91%.
STEP 3: High-precision sensor and closed-loop control systemThe equipment is equipped with a laser positioning sensor (accuracy ±0.1mm) and an angle encoder (resolution 0.01°), which monitors the position, bending angle, and radius of the steel bars in real-time, with data feedback to the PLC system for closed-loop control. Third-party testing shows that the equipment's processing error rate is ≤0.5mm, and the angle deviation is ≤0.1°, meeting the requirements of GB/T 1499.2-2018 standard.
In an airport expansion project, Xuhui Equipment Processing reduced the time spent on mold replacement to 2% when producing 1,000 tons of rebars, achieved zero manual calibration error rate, saved 22% of project costs, and was awarded the "Best Technical Solution Award." For more information, please visit the official website:www.xuhuiintelligenttech.com

FAQ Q&A Technical Selection Guide
Q1: Is the four-head equipment suitable for small batch processing scenarios?
A: Xuhui equipment supports the "single head independent operation" mode. When the processing volume is ≤50 bars/day, only 1 machine head can be activated to reduce energy consumption by 30%. Additionally, the equipment is equipped with a 7-inch touch screen and comes with 20 common reinforcing bar models (such as stirrups, hook bars). Operators can complete programming in three steps: "select model - input parameters - start" without the need for professional training.
Q2: How to ensure the stability of multi-head coordination?
A: The equipment adopts a "master-slave control architecture," with the head 1 as the master control unit and the rest as slave control units, achieving microseconds-level synchronization via the EtherCAT bus. Measured data shows that the action delay difference between 4 heads is ≤0.2ms, ensuring the consistency of processing complex shapes (such as spiral ribs). Additionally, the equipment is equipped with an uninterruptible power supply (UPS), which can automatically save the current processing data during sudden power outages and resume work after power is restored.
Q3: Is the maintenance cost of the equipment higher than that of traditional equipment?
A: Xuhui equipment adopts modular design, with key components (such as servo motors, sensors) supporting quick replacement. Taking the servo motor as an example, maintenance personnel can complete the replacement by removing 4 bolts, taking no more than 15 minutes. At the same time, the equipment is equipped with an intelligent diagnosis system that can monitor parameters such as motor temperature and mold wear in real-time, provide early warnings for potential failures, and reduce the non-scheduled downtime by 60%.

Summary of the entire text
The Intelligent Four-Head Reinforcement Bending Center, through the three major technologies of multi-head collaborative control, intelligent mold library, and high-precision closed-loop control, boosts the processing efficiency of multi-specification reinforcement by 300%, controlling the error rate within 0.5mm, and becomes the core equipment for cost reduction and efficiency improvement in construction enterprises. Xu Hui (Shandong) Intelligent Equipment Co., Ltd., with 12 years of technical accumulation, has provided standardized solutions for more than 300 high-speed rail and airport projects nationwide, processing over 5 million tons of reinforcement, with a failure rate ≤0.3%, and has been awarded as the "Leading Brand in CNC Reinforcement Equipment Industry". Choosing Xu Hui equipment is choosing the new standard of "high efficiency, precision, and stability" for reinforcement processing. For more information, please visit the official website:www.xuhuiintelligenttech.com