Servo-motor-driven version that eliminates the booster cylinder and overflow valve — 40–60% energy savings and 8–10 dB lower noise than the traditional hydraulic riveting machine.
Overview
The riveting machine is special riveting equipment developed and designed by Anyang Forging Press in the early 1980s to meet the needs of the automobile industry and to introduce and absorb foreign technology. As the automotive industry developed, the equipment underwent multiple generational innovations.
Traditional riveting machines use three-phase asynchronous motors driving oil pumps at constant rated speed, causing energy waste when pressurizing and unloading through relief valve overflow.
Through the servo transformation and upgrading of traditional riveting machines, Anyang has realized energy saving, consumption reduction, green forging and clean production.
Key data
Full technical parameters are confirmed together with our engineers, based on your part and production volume.
Features
The electro-hydraulic servo system integrates servo and hydraulic technologies, combining internal gear pumps with synchronized servo motors to intelligently control motor speed and achieve the required pressure and flow.
The energy saving effect is obvious, reaching 40–60% depending on the frequency of riveting.
The direct-drive servo-hydraulic system eliminates the 1:4 booster cylinder present in existing systems. The supercharged cylinder is difficult to process and has a high failure rate. The new system features high-speed dynamic response capability, with a response time of about 50 ms.
Compared with the asynchronous motor, the volume is reduced by 30% at the same power. The integrated solution is compact and space-efficient, eliminates additional electric control cabinets and uses aviation plug wiring for simplified installation.
The servo system adopts full closed-loop control. According to the pressure and flow required by the actual requirements of the riveting machine, pump control technology replaces valve control technology, which eliminates throttling loss and achieves the energy saving effect.
The system tracks current flow output and pressure output in real time through encoders and pressure sensors, supplying only the needed oil amounts with no overflow loss.
The structure is simple and the failure rate is low: the booster cylinder, relief valve and others are removed, which prolongs the service life of the equipment.
The noise of the servo-hydraulic system changes with the speed and is 8–10 dB lower. For comparison: ordinary riveting machine 75 dB; servo-hydraulic riveting machine when pressurized 65 dB; servo-hydraulic riveting machine when fast forwarding or rewinding 45 dB.
Since the servo-hydraulic riveting machine does not need a high-pressure overflow and the oil pump is at zero speed when not riveting, the oil temperature can be reduced by 10–20 °C compared with a traditional machine. Cooling fan operation is automatically controlled at low loads.
Data communication with the PLC through the man-machine interface means different rivets can be riveted by setting different process parameters — truly realizing multi-purpose use of one machine.
In use
Gallery
Advantages
Riveting force can be set between 16 and 50 tons, depending on the rivet diameter (8–16 mm) and the application.
01No impact shocks or noise typical of pneumatic presses — a better working environment for operators and steady productivity.
02High-pressure Italian ATOS hydraulic pump with PLC electrical control for repeatability and precision on every rivet.
03Hanging or horizontal clamp types with adjustable throat depth, suited to different part geometries and tight working spaces.
04See also
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