Friction welding device based on magnetorheological damper

Abstract

The friction welding device based on the magnetorheological damper comprises the magnetorheological damper, a chuck clamp, a spacing baffle, a baffle, a sliding mechanism and a base platform, the sliding mechanism is installed on the base platform, the spacing baffle and the baffle are both installed on the sliding mechanism, one end of the magnetorheological damper is installed on the baffle, and the other end of the magnetorheological damper is installed on the chuck clamp. The other end of the magnetorheological damper penetrates through the through hole in the spacing baffle to be connected with the chuck clamp. According to the friction welding device based on the magneto-rheological damper, the pressure required by materials can be controlled in real time and responded rapidly, the friction welding device can adapt to the physical characteristics of different materials, installation is convenient and fast, and the application scene is wide.

Description

Technical Field

[0001] The utility model relates to the field of dissimilar metal material welding, and particularly relates to a friction welding device based on a magnetorheological damper. Background Technique

[0002] Friction welding refers to a welding method that uses the heat generated by the friction of the workpiece contact surface as a heat source to cause plastic deformation of the workpiece under the action of pressure. Under the action of constant or increasing pressure and torque, relative movement between the welding contact end faces is used to generate frictional heat and plastic deformation heat on the friction surface and its nearby areas, so that the temperature in the nearby areas rises to a temperature range close to but generally lower than the melting point. The deformation resistance of the material decreases, the plasticity increases, and the oxide film at the interface breaks. Under the action of the upsetting pressure, with the plastic deformation and flow of the material, solid-state welding is achieved through molecular diffusion and recrystallization at the interface. From the perspective of the equipment on the current market, in the stage after welding is completed, most equipment directly completes the spatial requirements for molecular diffusion and recrystallization after welding through mechanical displacement or pressure relief. Such a working mode will cause problems with welding quality due to directly reducing the pressure without knowing the space required for molecular recrystallization.

[0003] A magnetorheological damper is a device with controllable damping under the action of a magnetic field. Its working principle is that when the coil current in the damper increases, the magnetic field in the throttle hole will increase, and the damping of the magnetorheological fluid flowing through the throttle hole will increase accordingly, causing the damping force output by the damper to increase. Conversely, when the current decreases, the damping also decreases. Therefore, by adjusting the input current, the magnitude of the damping force of the damper can be controlled. The magnetorheological damper has technical characteristics such as controllability, reversibility, and rapid response, and also has the unique advantage of good stability. Applying the magnetorheological damper in the final molecular diffusion and recrystallization stage of friction welding, by controlling the current to decrease or maintaining a certain damping force, the idle demand for molecular recrystallization can be ensured, further providing guarantee for the welding quality of the material. However, there are relatively few corresponding finished products on the market. Content of the Utility Model

[0004] In order to solve the technical problems existing in the prior art, the utility model provides a friction welding device based on a magnetorheological damper, which can perform real-time control and rapid response to the pressure required by the material, can adapt to the physical characteristics of different materials, is convenient to install, and has a wide range of applicable scenarios.

[0005] To achieve the above object, the technical solution of the utility model is as follows:

[0006] A friction welding device based on a magnetorheological damper comprises a magnetorheological damper, a chuck fixture, a spacing baffle, a baffle, a sliding mechanism and a base platform, wherein the sliding mechanism is mounted on the base platform, the spacing baffle and the baffle are both mounted on the sliding mechanism, one end of the magnetorheological damper is mounted on the baffle, and the other end of the magnetorheological damper passes through a through hole on the spacing baffle and is connected to the chuck fixture.

[0007] As a preferred technical solution, a support frame is provided at the lower part of the spacer baffle, and an arc-shaped bayonet matching the chuck fixture is provided on the support frame. The chuck fixture is installed on the arc-shaped bayonet and is coaxially arranged with the magnetorheological damper.

[0008] As a preferred technical solution, the magnetorheological damper is fixedly connected to the chuck fixture via a disc.

[0009] As a preferred technical solution, the sliding mechanism includes a motor, a screw rod, a slide rail platform and a limit unit. The motor and the limit unit are installed on the base platform. The motor is connected to the screw rod for transmission. The slide rail platform is provided with a screw hole matching the screw rod. The slide rail platform is mounted on the screw rod through the screw hole, and the slide rail platform is connected to the limit unit.

[0010] As a preferred technical solution, the spacing baffle and the lower part of the baffle are fixed to the slide rail platform by screws.

[0011] As a preferred technical solution, it includes a slide rail and a slider. The slide rail is arranged on the base platform and the position of the slide rail is parallel to the lead screw. A slider is fixed below the slide rail platform and the slider is slidably connected to the slide rail.

[0012] As a preferred technical solution, the motor is a servo motor.

[0013] As a preferred technical solution, the magnetorheological damper is connected to the baffle via a bearing.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The friction welding device based on the magnetorheological damper of the utility model uses the controllable damping force of the magnetorheological damper to replace the space requirement for material molecular recrystallization provided by pressure relief or mechanical displacement in traditional friction welding equipment. It can adapt to the physical properties of different materials and can control and respond quickly to the pressure required by the material in real time, thereby greatly ensuring the pressure requirement for material molecular recrystallization. It is also easy to install and has a wide range of applicable scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a friction welding device based on a magnetorheological damper of the utility model;

[0017] Figure 2It is a schematic structural diagram of the chuck fixture in the friction welding device based on a magnetorheological damper of the present utility model;

[0018] Figure 3 It is a schematic structural diagram of the base platform in the friction welding device based on a magnetorheological damper of the present utility model;

[0019] Figure 4 It is a schematic structural diagram of the slide rail platform in the friction welding device based on a magnetorheological damper of the present utility model;

[0020] Figure 5 It is a schematic structural diagram of the spacer baffle in the friction welding device based on a magnetorheological damper of the present utility model;

[0021] Figure 6 It is a schematic structural diagram of the baffle in the friction welding device based on a magnetorheological damper of the present utility model.

[0022] In the figure: 1. Magnetorheological damper; 2. Chuck fixture; 3. Spacer baffle; 31. Support frame; 4. Baffle; 5. Motor; 6. Lead screw; 7. Slide rail platform; 8. Base platform; 9. Screw. Specific embodiments

[0023] The technical solution of the present utility model will be further described below in conjunction with specific embodiments:

[0024] As Figure 1 shown, a friction welding device based on a magnetorheological damper 1 includes a magnetorheological damper 1, a chuck fixture 2, a spacer baffle 43, a baffle 4, a sliding mechanism, and a base platform 8. The sliding mechanism is installed on the base platform 8, and both the spacer baffle 43 and the baffle 4 are installed on the sliding mechanism. One end of the magnetorheological damper 1 is installed on the baffle 4, and the other end of the magnetorheological damper 1 passes through a through hole in the spacer baffle 43 and is connected to the chuck fixture 2.

[0025] A support frame 31 is provided at the lower part of the spacer baffle 43, and an arc-shaped bayonet matching the chuck fixture 2 is provided on the support frame 31. The chuck fixture 2 is installed on the arc-shaped bayonet, so that the chuck fixture 2 can form a certain lateral movement, and the chuck fixture 2 is coaxially arranged with the magnetorheological damper 1, providing a movement condition for buffering during the welding process.

[0026] The magnetorheological damper 1 and the chuck fixture 2 are fixedly connected by a disc to ensure that the magnetorheological damper 1 and the chuck fixture 2 are always in a tightly connected state, providing a certain working pressure during welding to better meet the design requirements.

[0027] The sliding mechanism includes a motor 5, a lead screw 6, a slide rail platform 7 and a limiting unit. The motor 5 and the limiting unit are installed on the base platform 8. The lead screw is connected to the motor 5 through a coupling. The slide rail platform 7 is provided with a threaded hole matching the lead screw 6, and the slide rail platform 7 is sleeved on the lead screw 6 through the threaded hole. The slide rail platform 7 is connected to the limiting unit. The lateral movement of the slide rail platform 7 adopts a ball screw structure design, which can provide different displacements according to the pressure requirements of different materials during the welding process, thus increasing the application scenarios of the device.

[0028] The shape of the spacer baffle 43 is similar to a "T" shape, and the shape of the baffle 4 is an L shape. The lower parts of the spacer baffle 43 and the baffle 4 are both attached to the slide rail platform 7 and fixed to the slide rail platform 7 by screws 9. A certain pre-tightening force is added to the device in the standby state, providing support guarantee while ensuring that the device achieves the expected function.

[0029] It includes a slide rail and a slider. The slide rail is arranged on the base platform 8 and the position of the slide rail is parallel to the lead screw 6. A slider is fixed below the slide rail platform 7, and the slider is slidably connected to the slide rail. The design of the slide rail can limit the moving direction of the slide rail platform 7.

[0030] The motor 5 adopts a servo motor. The working characteristics of the servo motor enable the movement displacement of the lead screw to be more accurate, providing a basic guarantee for the high-precision control requirements of the device in the later stage.

[0031] The magnetorheological damper 1 is connected to the baffle 4 through a bearing, adding a certain pre-tightening force to the device in the standby state, providing support guarantee while ensuring that the device achieves the expected function.

[0032] This embodiment is only a further explanation of the present invention, not a limitation of the present invention. Those skilled in the art can make non-creative modifications to this embodiment according to needs after reading this specification, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A friction welding device based on a magnetorheological damper, characterized in that: It includes a magnetorheological damper, a chuck fixture, a spacing baffle, a baffle, a sliding mechanism and a base platform. The sliding mechanism is installed on the base platform, the spacing baffle and the baffle are both installed on the sliding mechanism, one end of the magnetorheological damper is installed on the baffle, and the other end of the magnetorheological damper passes through a through hole on the spacing baffle to be connected to the chuck fixture.

2. A friction welding device based on a magnetorheological damper according to claim 1, characterized in that: A support frame is provided at the lower part of the spacing baffle, and an arc-shaped bayonet matching with a chuck fixture is provided on the support frame. The chuck fixture is installed on the arc-shaped bayonet and is coaxially arranged with the magnetorheological damper.

3. A friction welding device based on a magnetorheological damper according to claim 1, characterized in that: The magnetorheological damper is fixedly connected to the chuck fixture via a disc.

4. A friction welding device based on a magnetorheological damper according to claim 1, characterized in that: The sliding mechanism includes a motor, a screw rod, a slide rail platform and a limit unit. The motor and the limit unit are installed on the base platform. The motor is connected to the screw rod in a transmission manner. The slide rail platform is provided with a screw hole matching the screw rod. The slide rail platform is sleeved on the screw rod through the screw hole, and the slide rail platform is connected to the limit unit.

5. A friction welding device based on a magnetorheological damper according to claim 4, characterized in that: The spacing baffle and the lower part of the baffle are fixed on the slide rail platform by screws.

6. A friction welding device based on a magnetorheological damper according to claim 4, characterized in that: It comprises a slide rail and a slider, wherein the slide rail is arranged on a base platform and the position of the slide rail is parallel to the lead screw, a slider is fixed below the slide rail platform, and the slider is slidably connected to the slide rail.

7. A friction welding device based on a magnetorheological damper according to claim 4, characterized in that: The motor is a servo motor.

8. The friction welding device based on magnetorheological damper according to claim 1 is characterized in that: The magnetorheological damper is connected to the baffle through a bearing.

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