Radial forging manipulator resonant system

Abstract

The utility model discloses a radial forging manipulator resonance system, including resonance control unit, centering reset unit and liquid capacity adjusting unit, resonance control unit includes resonance servo valve and resonance oil cylinder, and resonance servo valve drives resonance oil cylinder reciprocating motion, and resonance oil cylinder is connected worm, and worm both sides are provided with left and right centering reset oil cylinder respectively, and centering reset unit is by left and right centering reset oil cylinder and liquid capacity tank composition, and each oil cylinder has the rod cavity intercommunication and is connected to liquid capacity tank, liquid capacity adjusting unit passes through changing liquid capacity tank volume and adjusts system stiffness, and the system still is equipped with pressure -reducing valve, and provides initial pressure for centering reset unit, the utility model discloses through the liquid capacity tank volume adjustable realization resonance stiffness nimble matching different forging frequency, adopts hydraulic centering reset structure and bears the high capacity, and the impact resistance is strong, effectively solved the traditional disc spring stiffness fixed, easy plastic deformation and the problem of poor adaptability of large tonnage, improved the precision and reliability of radial forging.

Description

Technical Field

[0001] This utility model relates to the field of radial forging equipment technology, specifically a radial forging manipulator resonant system. Background Technology

[0002] The radial forging manipulator is a crucial component of the radial forging mill, and its chuck rotation simple harmonic motion directly affects the forming quality and dimensional accuracy of the forgings. Currently, the centering and resetting mechanism of the chuck rotation simple harmonic oscillation cylinder in the manipulator commonly employs a disc spring structure. However, the disc spring centering and resetting method has the following significant drawbacks: First, the disc spring stiffness is fixed, making it impossible to flexibly adjust the resonant stiffness according to different forging frequencies during equipment commissioning, leading to difficulties in resonance matching. Second, the disc spring material is prone to plastic deformation under long-term high-frequency, high-impact loads, resulting in attenuation of the resetting force and affecting its service life. Third, the traditional disc spring structure has poor adaptability to high-tonnage radial forging mills, making it difficult to provide sufficient resetting stiffness and load-bearing capacity.

[0003] Therefore, there is a need in the prior art for a radial forging manipulator resonant system that is stiff, has a high load-bearing capacity, can adapt to different working conditions, and has high reliability. Utility Model Content

[0004] The purpose of this invention is to provide a radial forging manipulator resonant system that, through a hydraulic centering and resetting unit in conjunction with an adjustable-volume liquid tank, achieves flexible adjustment of the centering and resetting stiffness, thereby improving the system's load-bearing capacity and resonant response accuracy, and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a radial forging manipulator resonance system, comprising a resonance control unit, a centering reset unit, and a liquid capacity adjustment unit; The resonant control unit includes a resonant servo valve and a resonant cylinder. The P port of the resonant servo valve is connected to the system pressure oil source, and the T port and Y port are connected to the return oil pipeline. Its working oil port is connected to the rodless chamber and the rod chamber of the resonant cylinder to control the reciprocating motion of the resonant cylinder. The piston rod of the resonant cylinder is connected to the worm gear, and a left centering reset cylinder and a right centering reset cylinder are respectively provided on the left and right sides of the worm gear; the cylinder bodies of the left centering reset cylinder and the right centering reset cylinder are fixed on the frame, and their plunger ends are respectively in contact with the two sides of the worm gear. The centering reset unit includes the left centering reset cylinder, the right centering reset cylinder, and a liquid tank. The rod chambers of the left centering reset cylinder and the right centering reset cylinder are interconnected through oil passages and are jointly connected to the liquid tank. The liquid capacity adjustment unit includes a liquid tank, the volume of which is adjustable and connected to the oil circuit of the centering and resetting unit; The system also includes a pressure reducing valve, the inlet of which is connected to a pilot control oil source and the outlet of which is connected to the oil circuit of the centering reset unit, for providing a preset initial pressure to the left centering reset cylinder, the right centering reset cylinder and the liquid tank.

[0006] Preferably, there are multiple left centering reset cylinders and multiple right centering reset cylinders, symmetrically arranged on both sides of the worm gear.

[0007] Preferably, the volume of the liquid tank is adjusted by increasing or decreasing the number of tanks or by adjusting the internal piston limit.

[0008] Preferably, the centering reset unit is equipped with a pressure sensor in the oil circuit for detecting the oil circuit pressure.

[0009] Preferably, when the worm gear moves left and right under the drive of the resonant cylinder, it alternately compresses the centering and resetting cylinder on one side, thereby realizing the periodic conversion and resonant amplification of the centering and resetting force.

[0010] The working process of this utility model is as follows: Initially, the plungers of the left and right centering reset cylinders extend under the pressure of the hydraulic oil, contacting and limiting their position against the frame. When the resonant servo valve provides a control signal according to the forging frequency, the resonant cylinder drives the worm gear to move left and right. When the worm gear moves to the left, it pushes the plunger of the right centering reset cylinder to retract, compressing the hydraulic oil and increasing its pressure. When the resonant signal reverses, the reset force accelerates the worm gear to reset to the right, achieving the resonant function. By adjusting the volume of the liquid tank, the rate of pressure change during hydraulic oil compression can be changed, thereby precisely adjusting the magnitude of the centering reset force.

[0011] The beneficial effects of this utility model are as follows: (1) By adopting a hydraulic centering and resetting unit and setting an adjustable liquid tank, the equivalent stiffness of the system can be continuously adjusted by changing the volume of the liquid tank, thereby quickly matching a variety of process parameters and significantly improving the equipment debugging efficiency and process adaptability.

[0012] (2) This utility model adopts a hydraulic reset structure, which provides an equivalent reset stiffness that is several times that of the traditional disc spring scheme, and can withstand greater impact loads without permanent deformation. This feature effectively solves the problem of insufficient stiffness and easy overload damage of traditional disc springs when used in large-tonnage forging machines, and expands the application range of this resonant system.

[0013] (3) This utility model improves the operational reliability and maintenance convenience of the equipment. The centering and resetting unit, with hydraulic cylinders and liquid tanks as the core, avoids the problems of fracture or plastic deformation of mechanical parts such as disc springs due to metal fatigue and impact, and significantly extends the service life. At the same time, the key parameters of the system are achieved through pressure setting, which has high adjustment accuracy and is easy to monitor, reducing the complexity of daily maintenance and failure rate, and ensuring the continuity and stability of production. Attached Figure Description

[0014] Figure 1 This is a hydraulic schematic diagram of the present invention; Figure 2 This is a schematic diagram of the mechanical structure of this utility model; In the diagram: 1. Worm gear; 2. Pressure reducing valve; 3. Left centering reset cylinder; 4. Right centering reset cylinder; 5. Frame; 6. Pressure sensor; 7. Liquid tank; 8. Resonant cylinder; 9. Resonant servo valve; 10. Internal oil passage. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings.

[0016] like Figure 1-2 As shown, the radial forging manipulator resonance system provided by this utility model mainly includes a resonance control unit, a centering reset unit, and a liquid capacity adjustment unit. The core of the resonance control unit is the resonance servo valve 9 and the resonance cylinder 8. The resonance servo valve 9 receives external control signals and drives the resonance cylinder 8 to perform reciprocating motion. The piston rod of the resonance cylinder 8 is rigidly connected to the worm gear 1. Multiple sets of left centering reset cylinders 3 and right centering reset cylinders 4 are symmetrically arranged on the left and right sides of the worm gear 1. The cylinder bodies of these cylinders are mounted on the frame 5, and their plunger ends are in contact with the side of the worm gear 1.

[0017] The rod chambers of the left centering reset cylinder 3 and the right centering reset cylinder 4 are interconnected through the internal oil passage 10 and are jointly connected to the liquid tank 7, forming a centering reset unit. The liquid tank 7 serves as a liquid capacity adjustment unit, and its volume can be changed by increasing or decreasing the number of tanks or by adjusting the internal piston stroke through screws, thereby adjusting the overall hydraulic stiffness of the system.

[0018] The system also includes a pressure reducing valve 2, whose inlet is connected to the pressurized oil supplied by the pilot control pump, and whose outlet is connected to the oil circuit of the centering reset unit. This valve is used to fill the left centering reset cylinder 3, the right centering reset cylinder 4, and the liquid tank 7 with oil and establish the initial pressure. A pressure sensor 6 installed on the oil circuit is used to monitor pressure changes in real time.

[0019] The working process is as follows: In the initial state, the plungers of the left centering reset cylinder 3 and the right centering reset cylinder 4 extend under the action of pressurized oil and contact the frame 5 for limiting. When the resonant servo valve 9 gives a control signal according to the forging frequency, the resonant cylinder 8 drives the worm gear 1 to move left and right. When the worm gear 1 moves to the left, it pushes the plunger of the right centering reset cylinder 4 to retract, the oil is compressed, the pressure increases, and a reset force is generated to the right. When the resonant signal is reversed, this reset force accelerates the worm gear 1 to reset to the right, realizing the resonant function. By adjusting the volume of the liquid tank 7, the pressure change rate during oil compression can be changed, thereby precisely adjusting the magnitude of the centering reset force.

[0020] This invention replaces the traditional disc spring with a hydraulic system, enabling adjustable resonant stiffness and improving adaptability and system reliability under heavy-duty conditions.

[0021] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, based on the technical teachings provided by this utility model and as common knowledge in the field of hydraulics, other equivalent modifications and improvements can be made, and these should also be considered within the scope of protection of this utility model.

Claims

1. A radial forging manipulator resonant system, characterized in that, Includes a resonant control unit, a centering and reset unit, and a liquid capacity adjustment unit; The resonant control unit includes a resonant servo valve (9) and a resonant cylinder (8). The P port of the resonant servo valve (9) is connected to the system pressure oil source, and the T port and Y port are connected to the return oil pipeline. Its working oil port is connected to the rodless chamber and the rod chamber of the resonant cylinder (8) to control the reciprocating motion of the resonant cylinder (8). The piston rod of the resonant cylinder (8) is connected to the worm (1). The left centering reset cylinder (3) and the right centering reset cylinder (4) are respectively provided on the left and right sides of the worm (1). The cylinder bodies of the left centering reset cylinder (3) and the right centering reset cylinder (4) are fixed on the frame (5), and their plunger ends are respectively in contact with the two sides of the worm (1). The centering reset unit includes the left centering reset cylinder (3), the right centering reset cylinder (4) and the liquid tank (7). The rod chambers of the left centering reset cylinder (3) and the right centering reset cylinder (4) are connected to each other through oil passages and are connected to the liquid tank (7). The liquid capacity adjustment unit includes a liquid tank (7), the volume of which is adjustable and connected to the oil circuit of the centering and resetting unit; The system also includes a pressure reducing valve (2), the inlet of which is connected to a pilot control oil source and the outlet is connected to the oil circuit of the centering reset unit, for providing a preset initial pressure for the left centering reset cylinder (3), the right centering reset cylinder (4) and the liquid tank (7).

2. The radial forging manipulator resonant system according to claim 1, characterized in that: The left centering reset cylinder (3) and the right centering reset cylinder (4) are multiple in number and are symmetrically arranged on both sides of the worm (1).

3. A radial forging manipulator resonant system according to claim 1 or 2, characterized in that: The volume of the liquid tank (7) can be adjusted by increasing or decreasing the number of tanks or by adjusting the internal piston limit.

4. The radial forging manipulator resonant system according to claim 3, characterized in that: The centering reset unit is equipped with a pressure sensor (6) on the oil circuit to detect the oil circuit pressure.

5. A radial forging manipulator resonant system according to claim 4, characterized in that: When the worm gear (1) moves left and right under the drive of the resonant cylinder (8), it alternately compresses the centering and resetting cylinder on one side, thereby realizing the periodic conversion and resonant amplification of the centering and resetting force.

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