Residual stress eliminating device for metal precision material

Abstract

The utility model discloses a residual stress eliminating device for metal precision materials, and relates to the technical field of precision part manufacturing. Comprising a storage device, a rotating assembly, a semi-solid ultrasonic coupling agent, a plurality of ultrasonic units and an ultrasonic system, the rotating assembly is installed in the storage device, the rotating assembly is used for bearing parts and rotating at a preset speed, the semi-solid ultrasonic coupling agent is stored in the storage device, the ultrasonic units are detachably connected to the storage device, and the ultrasonic system is connected to the storage device. The output end of the ultrasonic unit is located in the storage and does not make contact with the inner wall of the storage, and the ultrasonic system is in telecommunication connection with the ultrasonic unit. The precise metal part is subjected to ultrasonic vibration through ultrasonic vibration, the residual stress formed in the manufacturing process of the part can be effectively reduced, and the dimensional stability of the precise metal part is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of precision part manufacturing, and particularly relates to a residual stress elimination device for precision metal materials. Background Technique

[0002] Residual stress often occurs during the manufacturing of precision metal components. Appropriate residual stress may become a factor for component strengthening, while inappropriate residual stress may lead to process defects such as deformation and cracking. After processing, residual stress will affect the static load strength, fatigue strength, stress corrosion resistance, and shape and size stability of components. Generally, there are three methods to eliminate residual stress: natural aging, thermal aging, and vibration aging. The commonly used method is heat treatment annealing. If the heat treatment annealing process is not properly handled, it is easy to cause changes in the material structure, thereby affecting the mechanical properties such as the strength of the components. The vibration aging process has the advantages of low energy consumption, low cost, high efficiency, and high environmental protection, and can replace the natural aging and thermal aging processes of workpieces. In the research of vibration aging, domestic research mainly focuses on low-frequency vibration aging at present. The developed low-frequency vibration aging equipment has been widely used in production and achieved good results.

[0003] Research shows that vibration aging is a micro-plastic deformation that occurs within the elastic range of the material. The micro-plastic deformation only occurs in some grains of the material, dislocation bands are formed inside the sub-grains, the sub-grain boundaries rotate to form "grains", the dislocations at the sub-grain boundaries open, forming microscopic yield zones one by one, and the lattice distortion decreases, thereby reducing the peak value of the residual stress in the workpiece and making it evenly distributed.

[0004] The patent number is CN 201910389855.0, which discloses a device and method for reducing and equalizing residual stress in complex components. The invention superimposes the alternating dynamic stress applied by the high-energy elastic waves in the component on the residual stress concentration area through a focused scanning method, and finally reduces and equalizes the residual stress inside the component.

[0005] However, with the development of product miniaturization and precision, the requirement for the size stability of small parts is getting higher and higher. Ultrasonic vibration has a low amplitude and high frequency, and the input energy per unit time is relatively large, so the time for eliminating residual stress is short. Using the above-mentioned scheme, the time is long and the process is relatively cumbersome, and it cannot be processed in batches.

[0006] Therefore, what this application wants to solve is how to implement a batch processing solution for eliminating residual stress for small precision parts, and at the same time make the device have a wider range of applications and be applicable to various models of precision parts. Content of the Utility Model

[0007] Utility Model Objective: To provide a multi-axis control device for machine tools to solve the above problems existing in the prior art.

[0008] Technical solution: A device for eliminating residual stress of a metal precision material, comprising:

[0009] A storage, the storage is a detachable structure; a rotating component is installed in the storage, and the rotating component is used to batch-carry parts and rotate at a preset speed;

[0010] A semi-solid ultrasonic coupling agent, stored in the storage;

[0011] A plurality of ultrasonic units, detachably connected to the memory; the output end of the ultrasonic unit is located in the memory and does not contact the inner wall of the memory;

[0012] An ultrasonic system, electrically connected to the ultrasonic unit.

[0013] Further, the storage is a square structure, and the inner wall of the storage is made of mirror stainless steel material.

[0014] Further, the output end of the ultrasonic unit is a cylindrical rod structure.

[0015] Further, the storage includes:

[0016] A box body, a through hole is opened at the bottom of the box body for installing a rotating component;

[0017] A sealing cover, detachably connected to the box body;

[0018] A buckle structure, with both ends thereof respectively connected to the box body and the sealing cover;

[0019] A plurality of mounting holes, evenly distributed on the sealing cover; the mounting holes are used for assembling the output end of the ultrasonic unit.

[0020] Further, the rotating component includes:

[0021] A rotating shaft, rotatably connected to the storage; one end of the rotating shaft is arranged inside the storage;

[0022] A bearing seat, connected to the rotating shaft;

[0023] A motor, drivingly connected to the other end of the rotating shaft.

[0024] Further, the upper top surface of the bearing seat is concave to form a limiting area.

[0025] Further, it further includes a gas component, and the gas component includes:

[0026] A valve, connected to the sealing cover;

[0027] A pressure gauge, connected to the sealing cover;

[0028] An air pump group is connected to the valve. Beneficial effects

[0029] 1. By using an ultrasonic vibration system to perform vibration aging treatment on precision metal parts, it can effectively homogenize the residual stress of the parts and improve the dimensional stability of the parts.

[0030] 2. This device contains at least 4 groups of symmetric ultrasonic units. With the help of a rotating carrier table, it can process multiple orientations of the parts, improving the uniformity and efficiency of part processing.

[0031] 4. The parts of this device are buried in the ultrasonic coupling agent, reducing the attenuation of ultrasonic energy. At the same time, with the help of the ultrasonic coupling agent, parts can be processed in batches, with high efficiency and improved ultrasonic vibration aging treatment. Description of the drawings

[0032] Figure 1 It is a schematic diagram of the overall structure of this application.

[0033] Figure 2 It is an exploded view of the partial structure of this application.

[0034] The reference numerals in the drawings are: storage 1, ultrasonic unit 2, ultrasonic system 3, rotating shaft 4, bearing seat 5, valve 6, pressure gauge 7, box body 11, sealing cover 12, buckle structure 13. Detailed implementation manners

[0035] In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present utility model, some well-known technical features in the art are not described. Embodiment

[0036] This application proposes a device for eliminating residual stress for metal precision materials, including: storage 1, rotating assembly, 4 ultrasonic units 2, ultrasonic system 3. Among them, a rotating assembly is installed in the storage 1, and the rotating assembly is used to batch-carry parts and rotate at a specified speed. A semi-solid ultrasonic coupling agent is also placed in the storage 1. The ultrasonic unit 2 can be detachably assembled with the memory. Among them, the output end of the ultrasonic unit 2 is located in the memory and does not contact the inner wall of the memory, being in a suspended state. The ultrasonic system 3 is electrically connected to the ultrasonic unit 2 to control the operation of the ultrasonic unit 2.

[0037] The storage 1 has a square structure and is made of corrosion-resistant polymer with a mirror stainless steel material lining, used for storing the semi-solid ultrasonic coupling agent.

[0038] In this solution, the storage 1 is a detachable structure and is reinforced by a snap structure, which means that the practicality of this application is wider. By opening the box body 11 and the sealing cover 12, parts can be stored and retrieved quantitatively, and the residual stress can be eliminated.

[0039] The output end of the ultrasonic unit 2 is a long cylindrical structure, which is an ultrasonic vibration rod and contains an ultrasonic transducer. It is connected to the ultrasonic control system through a wire. The output ends of the ultrasonic unit 2 are symmetrically distributed at the four corners of the square container and are in a semi-suspended state. When in use, the parts are all buried in the ultrasonic coupling agent, which can effectively reduce the ultrasonic energy loss and improve the ultrasonic vibration aging effect and efficiency.

[0040] In this solution, due to the semi-solid ultrasonic coupling agent and multiple ultrasonic units 2, and with the help of the rotating assembly at the same time, batch processing of eliminating the residual stress of precision parts can be realized, with high efficiency.

[0041] Based on the above solution, the storage 1 in this application includes a box body 11 and a sealing cover 12. Among them, a through hole is opened at the bottom of the box body 11 for installing the rotating assembly. The sealing cover 12 is detachably installed on the top of the box body 11 for sealing treatment. Installation holes are evenly distributed on the sealing cover 12 for assembling the output ends of the ultrasonic units 2, that is, the ultrasonic vibration heads.

[0042] The rotating assembly in this application includes a rotating shaft 4, a bearing seat 5 and a motor. Among them, the rotating shaft 4 is rotatably installed at the bottom of the storage 1. One end of the rotating shaft 4 is arranged inside the storage 1, and the bearing seat 5 is installed at the end. The motor drives the other end of the rotating shaft 4. The upper top surface of the bearing seat 5 is concave to form a limiting area for limiting the parts to prevent them from slipping.

[0043] The motor drive and other components in this application are installed inside the bottom layer of the box body 11 and are isolated from the inside of the box body. The design of this solution is that since the rotation speed is stable, the motor is installed at the bottom of the storage 1 to increase the mass of the box body 11, thereby reducing external vibration.

[0044] This application also includes a gas assembly. The gas assembly includes a valve 6, a pressure gauge 7 and an air pump group. Among them, the valve 6 and the pressure gauge 7 are both installed on the sealing cover 12. The air pump group pressurizes the inside of the memory through the valve 6 and is displayed through the pressure gauge 7.

[0045] As above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as a limitation of the present invention itself. Various changes can be made in its form and details without departing from the spirit and scope of the present invention defined by the appended claims.

Claims

1. A residual stress elimination device for metal precision materials, characterized in that Including: A memory, the memory being of a detachable structure; a rotating assembly is installed in the memory, and the rotating assembly is used to batch-carry parts and rotate at a preset speed; Semi-solid ultrasonic coupling agent, stored in the memory; A plurality of ultrasonic units, detachably connected to the memory; the output ends of the ultrasonic units are located inside the memory and do not contact the inner wall of the memory; An ultrasonic system, electrically connected to the ultrasonic units.

2. The residual stress elimination device for a metal precision material according to claim 1, wherein The memory is of a square structure, and the inner wall of the memory is made of mirror stainless steel material.

3. The residual stress elimination device for a metal precision material according to claim 1, characterized in that, The output end of the ultrasonic unit is of a cylindrical rod-like structure.

4. A residual stress elimination device for a metal precision material according to claim 1, characterized in that, The memory includes: A box body, through holes are opened at the bottom of the box body for installing the rotating assembly; A sealing cover, detachably connected to the box body; A snap structure, with both ends thereof respectively connected to the box body and the sealing cover; A plurality of mounting holes, evenly distributed on the sealing cover; the mounting holes are used for assembling the output ends of the ultrasonic units.

5. The residual stress elimination device for a metal precision material according to claim 2, characterized in that, The rotating assembly includes: A rotating shaft, rotatably connected to the memory; one end of the rotating shaft is arranged inside the memory; A bearing seat, connected to the rotating shaft; A motor, drivingly connected to the other end of the rotating shaft.

6. The residual stress elimination device for a metal precision material according to claim 5, characterized in that, The upper top surface of the bearing seat is concave to form a limiting area.

7. The residual stress elimination device for a metal precision material according to claim 4, characterized in that, It further includes a gas assembly, and the gas assembly includes: A valve, connected to the sealing cover; A pressure gauge, connected to the sealing cover; An air pump group, connected to the valve.

Images