AC servo hydraulic press is different from ordinary mechanical hydraulic press, it has many characteristics that ordinary mechanical hydraulic press cannot have.
(1) Ultra-flexible, high-precision, and ultra-flexible processing of various process slider speed curves. The AC servo hydraulic press has the function of free movement. The slider movement speed and stroke size can be set according to the requirements of the forming process, so the forming process requirements have Better flexibility. The AC servo hydraulic press uses a slider displacement sensor to achieve full closed-loop control, improve the accuracy of the bottom dead center, and compensate for the deformation of the body and other gaps that affect the processing accuracy. Optimal strategies can be adopted for the motion characteristics of the slider. For example, when drawing and bending, adopting a reasonable slider motion curve can reduce springback and improve the quality and accuracy of the part.
(2) Noise reduction and energy saving. The clutch/brake of the traditional hydraulic machine is removed. The operation of the slider is completely controlled by the servo motor. During the starting and braking process, exhaust noise and friction braking noise will not be generated, noise reduction and environmental protection; The use of friction materials saves energy and materials. In addition, the vibration of the hydraulic press is reduced, and the life of the mold can be increased by 2 to 3 times.
(3) Servo control of the forging process can realize intelligent, numerical control, and information processing. For different processing materials and processing techniques, different working curves can be used. The forging energy can be servo controlled, and the working curve of the slider can be digitally set within the required range, which effectively improves the process range and processing performance of the hydraulic press. The forging parameters can be recorded in real time, which is easy to realize the information management of the hydraulic press. The AC servo hydraulic press is simple and reliable to operate, and the servo control performance is good.
(4) Improve productivity. Since the movement curve of the slider can be set according to requirements, the movement speed and the number of strokes of the slider can be adjusted according to requirements. The stroke of the AC servo hydraulic press can be adjusted, and the number of strokes can be increased accordingly; under the condition that the number of strokes remains unchanged, the stroke speed in the non-working phase can be increased, the forging speed in the stamping phase can be reduced, and the processing quality of the workpiece can be improved. Compared with ordinary mechanical hydraulic presses, the productivity of AC servo hydraulic presses has been greatly improved.
(5) The energy-saving effect is remarkable. Under working conditions, the energy consumption of the AC servo hydraulic machine itself is lower than that of the ordinary mechanical hydraulic machine. The AC servo hydraulic machine can remove the clutch and other devices, without the energy consumption of the clutch. When the slider stops, the servo motor stops rotating. Compared with ordinary mechanical hydraulic presses, it eliminates the energy consumed by flywheel idling and effectively saves energy. When the hydraulic press is running at low speed, the energy-saving effect of the servo hydraulic press will be more prominent than that of the ordinary mechanical hydraulic press.
(6) Slider motion numerical control servo The motion curve of the slider can be set according to requirements. In the forging stage, the movement speed of the slider can be adjusted to reduce the working requirements of low-speed forging. In the return stage, the movement speed of the slider can be adjusted and increased to realize the work requirements of the slider for rapid return. Servo control of the movement curve of the slider helps to improve the precision of the forging and prolong the life of the die.
(7) The overall structure of the hydraulic machine is simplified. The AC servo hydraulic machine removes the core component of the traditional mechanical hydraulic machine-pneumatic friction clutch, and the transmission system is simple. At the same time, the AC servo hydraulic machine does not require a large flywheel, etc., the structure is simplified and the maintenance is reduced.
