A high-precision welding robotic arm for vehicle frames

Abstract

This utility model provides a high-precision welding robotic arm for vehicle frames, including a mounting base, a support base, a horizontal turntable, a large arm drive motor, a supporting large arm, a small arm, and a welding structure. The mounting base is fixedly mounted on the ground, and the support base is fixedly mounted on the surface of the mounting base. The horizontal turntable is mounted on top of the support base. The large arm drive motor is mounted on top of the horizontal turntable, and the supporting large arm is mounted on the output shaft of the large arm drive motor. The small arm is mounted at one end of the supporting large arm. The welding structure is mounted at one end of the small arm. The design of the small arm and welding structure in this utility model provides high precision and allows for the formation of a protective gas cloud at the welding position.

Description

Technical Field

[0001] This utility model relates to the field of welding robotic arm technology, and in particular to a high-precision welding robotic arm for vehicle frames. Background Technology

[0002] Welding robotic arms are a type of automated equipment. The arm, a fundamental component of the robotic manipulator, can rotate and reciprocate. A fixed welding torch is attached to the end of the welding robotic arm, enabling automated welding. Welding robotic arms offer advantages such as stabilizing and improving weld quality, ensuring uniformity, increasing labor productivity (allowing for continuous 24-hour production), improving working conditions (allowing operation in hazardous environments), reducing the skill requirements for operators, shortening product modification and replacement preparation cycles, reducing equipment investment, and automating welding for small-batch products. However, existing welding robotic arms still suffer from poor precision and the inability to form a protective gas cloud at the welding position.

[0003] Therefore, it is essential to invent a high-precision welding robotic arm for vehicle frames. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a high-precision welding robotic arm for vehicle frames, solving the issues of poor precision and inability to form a protective gas cloud at the welding position found in existing welding robotic arms. The high-precision welding robotic arm for vehicle frames includes a mounting base, a support base, a horizontal turntable, a main arm drive motor, a supporting main arm, a forearm, and a welding structure. The mounting base is fixedly mounted on the ground, and the support base is fixedly mounted on the surface of the mounting base. The horizontal turntable is mounted on top of the support base. The main arm drive motor is mounted on top of the horizontal turntable, and the supporting main arm is mounted on the output shaft of the main arm drive motor. The forearm is mounted at one end of the supporting main arm. The welding structure is mounted at one end of the forearm.

[0005] The forearm includes a forearm support, a forearm drive motor, a rotating base, a rotary drive motor, and a rotating forearm. The forearm drive motor is fixedly installed inside the forearm support, and its output shaft is fixedly installed at one end supporting the forearm. The rotating base is fixedly installed on the top of the forearm support, and the rotary drive motor is fixedly installed at the rear end of the rotating base. The rotating forearm is rotatably installed inside the rotating base and connected and fixed to the output shaft of the rotary drive motor.

[0006] The welding structure includes a fine-tuning motor, a fine-tuning base, a first support, a welding head, a second support, and an atmosphere tube. The fine-tuning motor is fixedly mounted on one end of the forearm, and the fine-tuning base is rotatably mounted on the output shaft of the fine-tuning motor. The first support and the second support are rotatably mounted on both sides of the fine-tuning base. The welding head is fixedly mounted on the first support, and the atmosphere tube is fixedly mounted on the second support.

[0007] The forearm as a whole can rotate at one end supporting the main arm through the drive of the forearm drive motor, and the rotating forearm can rotate inside the rotating seat through the drive of the rotation drive motor; the rotating forearm adopts a rubber roller structure, and a steel metal frame is set inside the rotating forearm, and a flexible bending sensing device is set inside the rotating forearm.

[0008] The fine-tuning base inside the welding structure can be rotated at a small angle by a fine-tuning motor, and the welding head uses a set of welding guns that can be driven to rotate by the first support. The atmosphere tube can spray argon gas towards the welding point, forming a temporary argon gas cloud that surrounds the welding point.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. The forearm of this utility model is designed to achieve dual rotational degrees of freedom through a forearm drive motor and a rotation drive motor, which accurately transmits the motion of the supporting upper arm to the welding structure; the rotating forearm structure with rubber rollers and steel frame, combined with the built-in flexible bending sensor, can effectively absorb welding vibration and prevent overload.

[0011] 2. The welding structure of this utility model achieves high-precision welding positioning by driving the fine-tuning base with a fine-tuning motor. The replaceable welding head installed on the first support supports multiple welding processes. In conjunction with the atmosphere tube of the second support, argon gas is injected to form a local protective gas cloud, realizing high-precision positioning and integrated control of multiple processes in the welding process. It is a key functional module to ensure the welding quality of vehicle frame. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the forearm structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the welding structure of this utility model.

[0015] In the picture:

[0016] Mounting base 1, support base 2, horizontal turntable 3, boom drive motor 4, support boom 5, forearm 6, forearm support 61, forearm drive motor 62, rotating base 63, rotating drive motor 64, rotating forearm 65, welding structure 7, fine-tuning motor 71, fine-tuning base 72, first support 73, welding head 74, second support 75, atmosphere tube 76. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0018] As attached Figure 1 To be continued Figure 3 As shown.

[0019] This utility model provides a high-precision welding robotic arm for vehicle frames, comprising a mounting base 1, a support base 2, a horizontal turntable 3, a large arm drive motor 4, a supporting large arm 5, a small arm 6, and a welding structure 7. The mounting base 1 is fixedly mounted on the ground, and the support base 2 is fixedly mounted on the surface of the mounting base 1. The horizontal turntable 3 is mounted on top of the support base 2. The large arm drive motor 4 is mounted on top of the horizontal turntable 3, and the supporting large arm 5 is mounted on the output shaft of the large arm drive motor 4. The small arm 6 is mounted at one end of the supporting large arm 5. The welding structure 7 is mounted at one end of the small arm 6.

[0020] The forearm 6 includes a forearm support 61, a forearm drive motor 62, a rotating base 63, a rotating drive motor 64, and a rotating forearm 65. The forearm drive motor 62 is fixedly installed inside the forearm support 61, and the output shaft of the forearm drive motor 62 is fixedly installed at one end supporting the upper arm 5. The rotating base 63 is fixedly installed on the top of the forearm support 61, and the rotating drive motor 64 is fixedly installed at the rear end of the rotating base 63. The rotating forearm 65 is rotatably installed inside the rotating base 63 and is connected and fixed to the output shaft of the rotating drive motor 64.

[0021] The welding structure 7 includes a fine-tuning motor 71, a fine-tuning base 72, a first support 73, a welding head 74, a second support 75, and an atmosphere tube 76. The fine-tuning motor 71 is fixedly mounted on one end of the forearm 6, and the fine-tuning base 72 is rotatably mounted on the output shaft of the fine-tuning motor 71. The first support 73 and the second support 75 are rotatably mounted on both sides of the fine-tuning base 72. The welding head 74 is fixedly mounted on the first support 73, and the atmosphere tube 76 is fixedly mounted on the second support 75.

[0022] The forearm 6 can rotate at one end supporting the main arm 5 by being driven by the forearm drive motor 62, and the rotating forearm 65 can rotate inside the rotating seat 63 by being driven by the rotation drive motor 64; the rotating forearm 65 adopts a roller structure made of rubber, and a steel metal frame is set inside the rotating forearm 65, and a flexible bending sensing device is set inside the rotating forearm 65.

[0023] The fine-tuning base 72 inside the welding structure 7 can be rotated at a small angle by the fine-tuning motor 71, and the welding head 74 adopts a set of welding guns that can be driven to rotate by the first support 73. The atmosphere tube 76 can spray argon gas towards the welding point to form a temporary argon gas cloud that surrounds the welding point.

[0024] The high-precision welding robotic arm for this vehicle frame achieves precise welding operations through a multi-axis collaborative control system: the mounting base 1 and the support base 2 form the equipment base, the horizontal turntable 3 and the main arm drive motor 4 drive the supporting main arm 5 to achieve basic positioning; the forearm 6 drives the rotating forearm 65 to complete three-degree-of-freedom spatial positioning through the forearm drive motor 62 and the rotary drive motor 64; the fine-tuning motor 71 in the welding structure 7 precisely controls the angle of the fine-tuning base 72, so that the welding head 74 is aligned with the weld seam with high precision, while the atmosphere pipe 76 sprays argon gas to form a protective gas cloud, which, together with the flexible bending sensor and the intelligent control system, compensates for errors in real time, realizing high-quality automated welding of various welding processes.

[0025] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A high-precision welding robotic arm for vehicle frames, characterized in that: The assembly includes a mounting base (1), a support base (2), a horizontal turntable (3), a boom drive motor (4), a supporting boom (5), a forearm (6), and a welding structure (7), wherein: the mounting base (1) is fixedly mounted on the ground, and the support base (2) is fixedly mounted on the surface of the mounting base (1); the horizontal turntable (3) is mounted on top of the support base (2); the boom drive motor (4) is mounted on top of the horizontal turntable (3), and the supporting boom (5) is mounted on the output shaft of the boom drive motor (4); the forearm (6) is mounted on one end of the supporting boom (5); and the welding structure (7) is mounted on the forearm. (6) One end; the welding structure (7) includes a fine-tuning motor (71), a fine-tuning base (72), a first support (73), a welding head (74), a second support (75) and an atmosphere tube (76), and the fine-tuning motor (71) is fixedly installed at one end of the forearm (6), and the fine-tuning base (72) is rotatably installed on the output shaft of the fine-tuning motor (71); the first support (73) and the second support (75) are rotatably installed on both sides of the fine-tuning base (72); the welding head (74) is fixedly installed on the first support (73); and the atmosphere tube (76) is fixedly installed on the second support (75).

2. The high-precision welding robotic arm for vehicle frames as described in claim 1, characterized in that: The forearm (6) includes a forearm support (61), a forearm drive motor (62), a rotating seat (63), a rotating drive motor (64), and a rotating forearm (65). The forearm drive motor (62) is fixedly installed inside the forearm support (61), and the output shaft of the forearm drive motor (62) is fixedly installed at one end of the supporting arm (5). The rotating seat (63) is fixedly installed on the top of the forearm support (61), and the rotating drive motor (64) is fixedly installed at the rear end of the rotating seat (63). The rotating forearm (65) is rotatably installed inside the rotating seat (63) and is connected and fixed to the output shaft of the rotating drive motor (64).

3. The high-precision welding robotic arm for vehicle frames as described in claim 2, characterized in that: The forearm (6) as a whole can rotate at one end of the supporting arm (5) by the drive of the forearm drive motor (62), and the rotating forearm (65) can rotate inside the rotating seat (63) by the drive of the rotating drive motor (64); the rotating forearm (65) adopts a rubber roller structure, and a steel metal frame is provided inside the rotating forearm (65), and a flexible bending sensing device is provided inside the rotating forearm (65).

4. The high-precision welding robotic arm for vehicle frames as described in claim 1, characterized in that: The fine-tuning base (72) inside the welding structure (7) can be rotated at a small angle by the fine-tuning motor (71), and the welding head (74) adopts a set of welding guns that can be driven to rotate by the first support (73). The atmosphere tube (76) can spray argon gas to the welding point to form a temporary argon gas cloud that surrounds the welding point.

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