The 3D automatic pipe bending machine is an innovative, high-tech product characterized by high repeat positioning accuracy, reliability, ease of operation, convenient maintenance, and a moderate price point. It fully meets the requirements for large, medium, and small-batch production of various bent structural components for bus body frames across high-, mid-, and entry-level models. It is an essential piece of specialized equipment for bus manufacturers looking to upgrade their production technology. The machine's control system primarily consists of a Human-Machine Interface (HMI), a Programmable Logic Controller (PLC), three servo motor sets, and various hydraulic and pneumatic cylinders. The HMI features a "recipe" function capable of storing process parameters for hundreds of different workpieces, facilitating effective human-machine interaction. The system utilizes a Panasonic FP-X PLC, which supports simultaneous four-axis positioning and dual-group interpolation functions, thereby satisfying the complex control requirements of the 3D pipe bending machine.
The equipment employs advanced domestically produced AC servo motors to control the rotation angles of two axes (the bending axis and the rotation axis) and the feed motion of a third axis (the feed axis). Linear interpolation between the feed axis and the bending axis executes the bending operation; the displacement of these two axes is determined by the bending angle, while the rotation axis performs rotational positioning based on commands. Additionally, solenoid valves work in conjunction with hydraulic and pneumatic cylinders to provide the motive power for various mechanisms, such as the main clamp, auxiliary clamp, material clamp, mandrel, and tube support.
Servo motors play a vital role in this equipment; their high performance is key to the machine's overall functionality. By fine-tuning parameters to ensure the servo motors operate at peak efficiency, the normal operation of the entire system is guaranteed.
Due to differences in transmission mechanisms, each axis requires specific adjustment of the pulse count needed for a full rotation of the output shaft to ensure optimal speed and precision. However, the two axes performing interpolation must share an identical pulse count; this requirement is easily met by configuring the electronic gear ratio of the servo motors. Given the wide variety of workpieces—with some requiring up to twenty bends each—and the need to sequentially access data for every bend, the programming can be simplified by using index registers to retrieve data stored in the HMI recipe system; this data is then converted into pulse counts through a series of real-number calculations.
Furthermore, because different workpiece models are processed on the machine, the linear feed margin at the final processing station is often minimal; to prevent collisions between the material clamp and the auxiliary clamp, the various machine movements must be executed in a specific, coordinated sequence.
Zhangjiagang Huameng Machinery Technology Co., Ltd. specializes in the manufacture of pipe bending machines, including CNC, hydraulic, and fully automatic models. Adhering to the business philosophy of "Customer First, Integrity-Based," we sincerely welcome new and existing clients to visit us, and our entire team is dedicated to providing you with comprehensive service.
