Executing system and control method for double-station press with machine-liquid mixing

Abstract

The invention discloses a mechanical-hydraulic mixed double-station press machine executing system and a control method thereof. In the same vertical plane, a first hydraulic cylinder and a second hydraulic cylinder are fixed to a pressing machine body in a left-right symmetric manner, and at the position between the first hydraulic cylinder and the second hydraulic cylinder, a gear and rack transmission mechanism driven by a motor through an electromagnetic clutch and an electromagnetic brake is arranged. The gear and rack transmission mechanism is provided with a center gear, a first rack and a second rack, wherein the first rack and the second rack are arranged on the left side and the right side of the center gear correspondingly, and by means of rotation of the center gear, the firstrack and the second rack are driven to synchronously and vertically move in the opposite directions. The first rack and a moving component outside a first hydraulic cylinder body form a linkage structure through a first connection rod, and the second rack and a moving component outside the second hydraulic cylinder body form a linkage structure through a second connection rod. According to the mechanical-hydraulic mixed double-station press machine executing system and the control method thereof, by means of a mechanical-hydraulic mixing manner, the energy loss caused in the running process ofa press machine is effectively reduced, the working efficiency of the press machine is improved, and the positioning precision of a pressing machine executing component is improved.

Description

technical field [0001] The present invention relates to a press execution system and its control method, in particular to a machine-hydraulic double-station press execution system and its control method, which are used to maintain a high efficiency of the drive system and reduce the operating time of the press. Reduce energy loss, improve the working efficiency and energy utilization rate of the press, and improve the positioning accuracy of the press during operation. Background technique [0002] As an important part of the forming equipment, the hydraulic press has a stable transmission and simple control, and has a wide range of applications. However, the hydraulic press has many conversion links and a large energy loss. There are problems of mismatch between the load characteristics and the drive during operation and potential energy waste. The energy loss is large, the efficiency is low, and there is a large energy waste. [0003] Recycling the energy during the falli...

AI Technical Summary

Problems solved by technology

However, the hydraulic press has many conversion links and a large energy loss. There are problems of mismatch between the load characteristics and the drive during operation and potential energy waste. The energy loss is large, the efficiency is low, and there is a large energy waste.

[0003] Recycling the energy during the falling process of the execution unit has a certain effect on energy saving, but there are two processes of storage and reuse in the energy recovery process, so the energy conversion link is increased, and the complexity of the conversion process reduces the energy utilization. efficiency, and also affects the controllability of the system

[0004] On the other hand, due to the compressibility of hydraulic oil and the inertia of large-mass moving parts, when the hydraulic system cuts off the flow, the moving parts cannot stop at the designated position immediately, and the positioning accuracy is low

The precise energy-saving control of the manufacturing process and the forming accuracy have had a great impact

[0005] However, due to the rigid connection method of the mechanical press, the system has poor flexibility and cannot generate large pressure, and also has the problem of high energy consumption.

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