Friction welding device with adjustable stirring head

Abstract

The utility model discloses a friction welding device capable of adjusting a stirring head, which comprises a clamping handle, a shaft shoulder is arranged at the bottom of the clamping handle, a groove convenient for accommodating a stirring head body is arranged in the shaft shoulder, a transmission groove is arranged in the clamping handle, a worm is arranged in the transmission groove, and a stirring head is arranged in the worm. The bottom of the worm abuts against the stirring head body through a pressure sensor, the worm is in transmission connection with the worm wheel, the worm wheel is in transmission connection with the gearbox, and the gearbox is in transmission connection with the servo motor. The stirring head made of required materials can be conveniently replaced at any time according to requirements, the pressure of friction welding can be monitored and fed back at any time, the pressure of friction welding can be adjusted according to differences of types, sizes, thicknesses and the like of metal on a welding surface according to requirements, and the device has the advantages of being high in flexibility and good in controllability.

Description

A friction welding device with an adjustable stirring head Technical Field

[0001] This utility model relates to the field of friction welding equipment, specifically a friction welding device with an adjustable stirring head. Background Technology

[0002] Welding, also known as fusion welding, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature, or high pressure. Before the late 19th century, the only welding process was metal forging welding, which blacksmiths had used for hundreds of years. The earliest modern welding technologies appeared in the late 19th century, starting with arc welding and oxy-fuel welding, followed by resistance welding. Now, friction welding, which utilizes the heat energy generated during rotation and applies appropriate pressure to complete the weld, is widely used due to its advantages of simple process, high quality, good working conditions, high productivity, low power consumption, and ease of mechanization and automation.

[0003] Friction welding encompasses a wide variety of types, primarily including inertial friction welding, linear friction welding, friction stir welding, and friction electric welding. Among these, friction stir welding, with its high efficiency, minimal deformation, low energy consumption, simple equipment, and safety and reliability, has found widespread application in aerospace, rail transportation, shipbuilding, and new energy vehicles. The stirring head is the core component of friction stir welding. Currently, there are many types of stirring heads on the market. For example, Chinese patent application number CN202510483535.7 describes a friction stir welding stirring head structure and friction stir welding equipment, belonging to the field of friction stir welding technology. The stirring head structure includes a shoulder and a stirring pin. The stirring pin is coaxially and detachably disposed within the shoulder. The tip of the stirring pin extends beyond the shoulder end face, with the root of the tip located at the shoulder end face. A weak point is provided near the root of the tip to ensure that if the tip breaks during operation, the breakage occurs at this weak point, preventing the broken tip from scratching the shoulder. The aforementioned patent is a typical friction welding stirring head device. However, in practical applications, it is difficult to adjust the required pressure in real time according to the type of metal to be welded and the welding specifications, resulting in poor flexibility and controllability. Summary of the Invention

[0004] The purpose of this invention is to provide a friction welding device with an adjustable stirring head, so as to solve the problem mentioned in the background art that the existing friction welding stirring head is difficult to adjust the required pressure in real time according to the type of metal to be welded and the welding specifications, and has poor flexibility and controllability.

[0005] The technical solution of this utility model is implemented as follows: A friction welding device with an adjustable stirring head includes a clamping handle, a shoulder at the bottom of the clamping handle, a groove inside the shoulder to facilitate the accommodation of the stirring head body, a transmission groove inside the clamping handle, a worm gear inside the transmission groove, the bottom of the worm gear contacting the stirring head body via a pressure sensor, the worm gear being connected to a worm wheel via a transmission, the worm wheel being connected to a gearbox via a transmission, the gearbox being connected to a servo motor via a transmission, the servo motor being electrically connected to a servo microcontroller, the servo microcontroller being electrically connected to a conductive rotary slip ring, the pressure sensor being electrically connected to the conductive rotary slip ring, and the conductive rotary slip ring being electrically connected to a friction welding CNC machine.

[0006] Preferably, an elastic band is provided at the bottom of the shoulder, the elastic band is fixedly connected to the shoulder, and the elastic band is made of high-temperature resistant rubber material.

[0007] Preferably, a spring post is provided between the pressure sensor and the stirring head body, and the pressure sensor is fixedly connected to the spring post, which is a molybdenum alloy steel spring.

[0008] Preferably, an LED screen is fixedly mounted on the clamping handle housing, the LED screen is electrically connected to the pressure sensor, and the LED screen is a high-temperature resistant screen.

[0009] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0010] This friction welding device with an adjustable stirring head adopts a split design for the stirring head and clamping end, which makes it easy to replace the stirring head with the required material at any time. Moreover, it can monitor and provide feedback on the friction welding pressure at any time, and adjust the friction welding pressure according to the type, size, thickness and other differences of the metal on the welding surface. It has the advantages of high flexibility and good controllability. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 is a front view of this utility model;

[0013] Figure 2 is an internal structural view of this utility model.

[0014] The components include: 1. Clamping handle; 2. Shoulder; 3. Stirring head body; 4. LED screen; 5. Servo motor; 6. Servo microcontroller; 7. CNC box; 8. Gearbox; 9. Worm gear; 10. Worm; 11. Pressure sensor; 12. Spring column; 13. Elastic tension ring; 14. Transmission groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Referring to Figures 1 and 2, a friction welding device with an adjustable stirring head includes a clamping handle 1, a shoulder 2 at the bottom of the clamping handle 1, a groove inside the shoulder 2 to accommodate the stirring head body 3, a transmission groove 14 inside the clamping handle 1, a worm gear 10 inside the transmission groove 14, the bottom of the worm gear 10 abutting against the stirring head body 3 via a pressure sensor 11, the worm gear 10 being connected to a worm wheel 9 via a transmission, the worm wheel 9 being connected to a gearbox 8 via a transmission, the gearbox 8 being connected to a servo motor 5 via a transmission, the servo motor 5 being electrically connected to a servo microcontroller 6, the servo microcontroller 6 being electrically connected to a conductive rotary slip ring 7, the pressure sensor 11 being electrically connected to the conductive rotary slip ring 7, and the conductive rotary slip ring 7 being electrically connected to a friction welding CNC machine. The conductive rotary slip ring 7 is a common rotary conductive device that can transmit not only electricity but also electrical signals. It is a mature existing technology, and its specific mechanism and principle will not be described in detail here.

[0017] Referring to Figures 1 and 2, an elastic band 13 is provided at the bottom of the shoulder 2. The elastic band 13 is fixedly connected to the shoulder 2. The elastic band 13 is made of high-temperature resistant rubber material. This arrangement facilitates the use of the elastic band 13 to provide friction for fixing the stirring head body 3 after the stirring head body 3 is inserted, so as to press the stirring head body 3 against the part to be welded.

[0018] Referring to Figure 2, a spring column 12 is provided between the pressure sensor 11 and the stirring head body 3. The pressure sensor 11 and the spring column 12 are fixedly connected. The spring column 12 is a molybdenum alloy steel spring. This arrangement allows the elastic deformation of the spring column 12 to act as a stroke protection, preventing excessive pressure from direct contact between the stirring head body 3 and the worm gear 10, which could cause rigidity damage. The molybdenum alloy steel spring has the advantages of high temperature resistance, high fatigue life, and high elastic modulus. Even after long-term use in high-temperature environments, the molybdenum alloy steel spring will not lose its elasticity and its performance is stable and reliable.

[0019] Referring to Figure 1, an LED screen 4 is fixedly installed on the housing of the clamping handle 1. The LED screen 4 is electrically connected to the pressure sensor 11. The LED screen 4 is a high-temperature resistant screen. This setting makes it easy for the LED screen 4 to display the welding pressure of friction welding in real time, so that the staff can check it at any time.

[0020] Working principle: When using this device for friction welding, the stirring head body 3 is inserted into the groove inside the shoulder 2, and the bottom of the stirring head body 3 is placed against the weld seam. The friction welding machine drives the shoulder 2 and the internal stirring head body 3 to rotate on the weld seam through the clamping handle 1. While the clamping handle 1 and the shoulder 2 are rotating, the power and electrical signals of the friction welding CNC machine are input to the conductive rotating slip ring 7, which powers the pressure sensor 11. The pressure sensor 11 monitors in real time the contact between the metal to be welded and the stirring head body 3 during the friction welding operation. The generated reaction force is fed back to the friction welding CNC machine through the conductive rotary slip ring 7. When the friction welding pressure needs to be adjusted, the friction welding CNC machine inputs control signals and power through the conductive rotary slip ring 7. The servo single-chip microcomputer 6 controls the servo motor 5 to run. The servo motor 5 drives the worm wheel 9 to rotate through the gearbox 8. The worm wheel 9 drives the worm 10 to move up and down, adjusting the pressure of the worm 10 on the stirring head body 3, thereby adjusting the pressure generated by the stirring head body 3 on the metal to be welded, realizing efficient, controllable and flexible adjustment of the friction welding stirring head.

[0021] In this specification, the terms "connection," "installation," "fixing," and "setting" are interpreted broadly. For example, "connection" can mean a fixed connection or an indirect connection via an intermediate component without affecting the relationship between components and the technical effect. It can also mean an integral connection or a partial connection. In such cases, those skilled in the art can understand the specific meaning of the above terms in this utility model or utility model according to the specific circumstances. In this utility model, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing this utility model and its embodiments and are not intended to limit the indicated device, element, or component to having a specific orientation or to be constructed and operated in a specific orientation. Finally, it should be noted that when describing the position of each component and the matching relationship between them, this utility model usually uses one or a pair of components as examples. However, those skilled in the art should understand that such positions and matching relationships also apply to other components / other pairs of components.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A friction welding device with an adjustable stir head, characterized by: The device includes a clamping handle (1), a shoulder (2) at the bottom of the clamping handle (1), a groove for accommodating the stirring head body (3) inside the shoulder (2), a transmission groove (14) inside the clamping handle (1), a worm (10) inside the transmission groove (14), the bottom of the worm (10) abutting against the stirring head body (3) through a pressure sensor (11), the worm (10) being connected to a worm wheel (9) via a transmission, the worm wheel (9) being connected to a gearbox (8) via a transmission, the gearbox (8) being connected to a servo motor (5), the servo motor (5) being electrically connected to a servo microcontroller (6), the servo microcontroller (6) being electrically connected to a conductive rotating slip ring (7), the pressure sensor (11) being electrically connected to the conductive rotating slip ring (7), and the conductive rotating slip ring (7) being electrically connected to a friction welding CNC machine.

2. A friction welding device for an adjustable mixer head as claimed in claim 1, wherein: An elastic band (13) is provided at the bottom of the shoulder (2), and the elastic band (13) is fixedly connected to the shoulder (2). The elastic band (13) is made of high-temperature resistant rubber material.

3. A friction welding device for an adjustable mixer head as defined in claim 1, wherein: A spring column (12) is provided between the pressure sensor (11) and the stirring head body (3). The pressure sensor (11) and the spring column (12) are fixedly connected. The spring column (12) is a molybdenum alloy steel spring.

4. A friction welding device for an adjustable mixer head as defined in claim 1, wherein: An LED screen (4) is fixedly installed on the housing of the clamping handle (1). The LED screen (4) is electrically connected to the pressure sensor (11). The LED screen (4) is a high-temperature resistant screen.

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