Detection tool for automobile spring arm welding assembly

Abstract

The invention relates to the technical field of automobile spring arm welding tools, in particular to a detection tool for an automobile spring arm welding assembly. According to the technical scheme, the detection tool for the automobile spring arm welding assembly comprises a center clamping tool assembly, and further comprises a downward pressing clamping tool assembly and a six-axis mechanical arm assembly. After an automobile spring arm is clamped through an air cylinder clamp of the five-axis mechanical arm assembly, a six-axis mechanical arm is used for adjusting the posture, and then a welding part is sequentially placed in the center clamping tool assembly and the downward pressing clamping tool assembly to achieve the detection function of the welding part. Therefore, the detection efficiency of the automobile spring arm welding assembly is effectively improved, and the assembly error caused by manual detection is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile spring arm welding tooling, and in particular relates to a detection tooling for an automobile spring arm welding assembly. Background Art

[0002] In the field of automobile manufacturing, the spring arm welding assembly is a key component of the chassis system, and its welding quality directly affects the vehicle's handling stability and driving safety. The inspection tooling, as the core equipment for verifying welding accuracy, needs to ensure the consistency of the welding points with the design benchmark. The existing inspection tooling generally adopts a mechanical fixture structure, and positioning is achieved by manually adjusting the position of the clamping block. Due to the complex geometric shape of the spring arm and the existence of multiple curved surface transition features, traditional fixtures are difficult to accurately fit the workpiece surface, resulting in positioning benchmark offset. At the same time, the fixture installation needs to rely on the operator's experience for repeated trial and error adjustments. A single clamping takes up to twenty minutes, affecting the inspection efficiency. More importantly, the inspectors need to frequently disassemble the fixture for posture calibration, which increases labor intensity and reduces the reliability of the inspection data.

[0003] Therefore, in view of the problem that the existing inspection tool for automobile spring arm welding assembly mentioned above is not accurate in clamping and positioning of automobile spring arm, and clamping and mounting is time-consuming and labor-intensive, resulting in deviations in the inspection of welding points and the need for frequent adjustment of the fixture posture, an inspection tool for automobile spring arm welding assembly can be designed. Summary of the Invention

[0004] In order to overcome the problem of an existing inspection fixture for automobile spring arm welding assembly, because the clamping and positioning of the automobile spring arm is not accurate and the clamping and mounting is time-consuming and labor-intensive, the inspection of the welding point is prone to deviation and the fixture posture needs to be frequently adjusted.

[0005] The technical solution of the present invention is: a detection tool for an automobile spring arm welding assembly, including a center clamping tool assembly, a downward clamping tool assembly, and a six-axis robotic arm assembly; the center clamping tool assembly includes a center fixture bracket, a lifting platform, a center fixture, front and rear fixtures, front and rear feed cylinders, a first welding point detection sensor, and a second welding point detection sensor; the downward clamping tool assembly includes a clamping mechanism bracket, a lifting fixture cylinder, a lifting fixture, an upper clamping base, a lower clamping base, a positioning fixture, a third welding point detection sensor, and a calibration contact sensor.

[0006] Preferably, the automobile spring arm is clamped by the cylinder clamp of the five-axis robotic arm assembly, and then the posture is adjusted by the six-axis robotic arm, and the welding parts are placed in the central clamping tooling assembly and the downward clamping tooling assembly in turn to perform the welding part detection function, thereby effectively improving the detection efficiency of the automobile spring arm welding assembly and reducing the assembly error problem of manual detection, solving the problem of an existing inspection tool for the automobile spring arm welding assembly, because its clamping and positioning of the automobile spring arm is not accurate, and the clamping and mounting is time-consuming and labor-intensive, resulting in the detection of its welding points being prone to deviations and the need to frequently adjust the fixture posture.

[0007] Preferably, downward clamping tooling assemblies are provided on both sides of the center clamping tooling assembly; a six-axis robotic arm assembly is provided in front of the center clamping tooling assembly; a lifting platform is provided above the center clamp bracket, and the lifting platform is connected to the center clamp bracket in a vertical direction; a lifting platform cylinder is provided in front of the center clamp bracket, and the outer shell of the lifting platform cylinder is fixedly connected to the center clamp bracket; the lifting platform cylinder drives the lifting platform to move up and down.

[0008] Preferably, center clamps are provided on both sides of the front end of the lifting platform, and the center clamps are fixedly connected to the lifting platform bolts; front and rear clamps are provided behind the two center clamps; front and rear feed cylinders are provided at the rear ends of the front and rear clamps, and the outer shells of the front and rear feed cylinders are fixedly connected to the lifting platform, and the front and rear feed cylinders drive the front and rear clamps to move forward and backward.

[0009] Preferably, a first welding point detection sensor and a second welding point detection sensor are respectively provided on the outer side of the central clamp and on the lower side of the central clamp, and the housing of the first welding point detection sensor is fixedly connected to the lifting platform.

[0010] Preferably, clamping mechanism brackets are provided on both sides of the central clamp bracket; a lifting clamp cylinder is provided at the upper end of the clamping mechanism bracket; a lifting clamp is provided below the lifting clamp cylinder, and the lifting clamp cylinder drives the lifting clamp to lift and lower through a transmission connection; an upper clamping base is provided at the lower end of the lifting clamp, and the upper clamping base is fixedly connected to the lifting clamp bolts; a lower clamping base is provided below the upper clamping base, and the lower clamping base is fixedly connected to the clamping mechanism bracket; positioning clamps are provided on both sides of the front of the lower clamping base.

[0011] Preferably, a calibration contact sensor is provided at the rear between the lifting clamp and the lifting clamp cylinder; third welding point detection sensors are provided on both sides of the bottom of the lifting clamp cylinder and on both sides of the lower clamping base; an air pump motor is fixedly provided at the rear end of the clamping mechanism bracket, and the air pump motor is connected to the air pump air supply pipeline of the downward clamping tooling assembly.

[0012] Preferably, a six-axis robotic arm is provided in front of the central clamping tooling assembly, and the six-axis robotic arm is a robotic arm structure with six-axis rotation adjustment.

[0013] Preferably, cylinder clamps are provided on both sides of the rear of the rotating adjustment head of the output adjustment end of the six-axis robot arm, and the cylinder clamps are arranged for inward clamping movement.

[0014] Beneficial effects of the present invention:

[0015] 1. An existing inspection tool for automobile spring arm welding assemblies has an inaccurate clamping and positioning of the automobile spring arm, which is time-consuming and labor-intensive to clamp and mount, resulting in deviations in the inspection of the welding points and the need for frequent adjustment of the fixture posture. The automobile spring arm is clamped by the cylinder clamp of the five-axis robotic arm assembly, and the posture is adjusted by the six-axis robotic arm. The welding parts are then placed in the central clamping tool assembly and the downward clamping tool assembly to perform the welding part inspection function, thereby effectively improving the inspection efficiency of the automobile spring arm welding assembly and reducing the assembly error problem caused by manual inspection. This solves the problem of an existing inspection tool for automobile spring arm welding assemblies, which has an inaccurate clamping and positioning of the automobile spring arm and is time-consuming and labor-intensive to clamp and mount, resulting in deviations in the inspection of the welding points and the need for frequent adjustment of the fixture posture.

[0016] 2. Through the setting of the center clamping tooling assembly, the welding part of the automobile spring arm is placed between the two center clamps. Then the front and rear feed cylinders drive the front and rear clamps to feed forward and clamp and fix the welding part of the automobile spring arm. The first welding point detection sensor is used to detect the clamping stability between the workpiece and the center clamp and the front and rear clamps to improve the clamping accuracy. Then the lifting platform cylinder is used to drive the lifting platform to control the lifting of the welding part of the automobile spring arm, so as to realize the second welding point detection sensor to perform ultrasonic welding detection and analysis on the welding points on the side of the workpiece layer by layer.

[0017] 3. Through the setting of the five-axis robotic arm assembly, after the welding part of the automobile spring arm is clamped and detected by the central clamping tooling assembly, the five-axis robotic arm assembly places the end of the workpiece on the lower clamping base of the downward clamping tooling assembly. At this time, the rear end face of the upper end of the workpiece is close to the calibration contact sensor. The calibration contact sensor is used to determine whether the upper end of the workpiece is close to it and calibrated and positioned, so as to maintain the vertical placement accuracy of the workpiece. After that, the lifting fixture cylinder drives the lifting fixture to descend so that the upper clamping base clamps and fixes the corner between the end and the horizontal spring arm rod. As the third welding point detection sensor analyzes the welding point of the clamping part, the ultrasonic detection and analysis function of the welding point is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1Shown is a schematic diagram of the overall three-dimensional structure of a detection tool for automobile spring arm welding assembly of the present invention;

[0019] Figure 2 Shown is a schematic diagram of the overall rear-view stereoscopic structure of a detection tool for an automobile spring arm welding assembly according to the present invention;

[0020] Figure 3 Shown is a schematic diagram of the combined three-dimensional structure of a central clamping fixture component and a downward clamping fixture component of a detection fixture for an automobile spring arm welding assembly according to the present invention;

[0021] Figure 4 Shown is a rear perspective structural diagram of a five-axis robotic arm assembly for use in an inspection tool for an automobile spring arm welding assembly according to the present invention;

[0022] Figure 5 Shown is a schematic diagram of the three-dimensional structure of a central clamping fixture component of a detection fixture for an automobile spring arm welding assembly according to the present invention;

[0023] Figure 6 Shown is a schematic diagram of the three-dimensional structure of a downward pressing and clamping tooling component of a detection tooling for an automobile spring arm welding assembly according to the present invention.

[0024] The marks in the accompanying drawings are: 1. Center clamping tooling assembly; 2. Pressing clamping tooling assembly; 3. Six-axis robotic arm assembly; 101. Center clamp bracket; 102. Lifting platform; 103. Center clamp; 104. Front and rear clamps; 105. Front and rear feed cylinders; 106. First welding point detection sensor; 107. Second welding point detection sensor; 108. Lifting platform cylinder; 201. Clamping mechanism bracket; 202. Lifting clamp cylinder; 203. Lifting clamp; 204. Upper clamping base; 205. Lower clamping base; 206. Positioning clamp; 207. Third welding point detection sensor; 208. Calibration contact sensor; 209. Air pump motor; 301. Six-axis robotic arm; 302. Cylinder clamp. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and examples.

[0026] See also Figure 1-6The present invention provides an embodiment: a detection tool for an automobile spring arm welding assembly, comprising a center clamping tool assembly 1, a downward clamping tool assembly 2, and a six-axis robotic arm assembly 3; the center clamping tool assembly 1 comprises a center fixture bracket 101, a lifting platform 102, a center fixture 103, front and rear fixtures 104, front and rear feed cylinders 105, a first welding point detection sensor 106, and a second welding point detection sensor 107; the downward clamping tool assembly 2 comprises a clamping mechanism bracket 201, a lifting fixture cylinder 202, a lifting fixture 203, an upper clamping base 204, a lower clamping base 205, a positioning fixture 206, a third welding point detection sensor 207, and a calibration contact sensor 208.

[0027] See also Figure 1-6 In this embodiment, downward clamping fixture assemblies 2 are provided on both sides of the central clamping fixture assembly 1; a six-axis robot arm assembly 3 is provided in front of the central clamping fixture assembly 1; a lifting platform 102 is provided above the central clamp bracket 101, and the lifting platform 102 is connected to the vertical direction of the central clamp bracket 101; a lifting platform cylinder 108 is provided in front of the central clamp bracket 101, and the shell of the lifting platform cylinder 108 is fixedly connected to the central clamp bracket 101; the lifting platform cylinder 108 drives the lifting platform 102 to be lifted and lowered; a central clamp 103 is provided on both sides of the front end of the lifting platform 102, and The center clamp 103 is fixedly connected to the lifting platform 102 by bolts; a front and rear clamp 104 is arranged behind the two center clamps 103; a front and rear feed cylinder 105 is provided at the rear end of the front and rear clamps 104, and the outer shell of the front and rear feed cylinder 105 is fixedly connected to the lifting platform 102, and the front and rear feed cylinder 105 drives the front and rear clamps 104 to move forward and backward; a first welding point detection sensor 106 and a second welding point detection sensor 107 are respectively provided on the outer side of the center clamp 103 and the lower side of the center clamp 103, and the outer shell of the first welding point detection sensor 106 is fixedly connected to the lifting platform 102.

[0028] See also Figure 1-6In this embodiment, a clamping mechanism bracket 201 is provided on both sides of the central clamp bracket 101; a lifting clamp cylinder 202 is provided on the upper end of the clamping mechanism bracket 201; a lifting clamp 203 is provided below the lifting clamp cylinder 202, and the lifting clamp cylinder 202 drives the lifting clamp 203 to lift and lower in a transmission connection; an upper clamping base 204 is provided at the lower end of the lifting clamp 203, and the upper clamping base 204 is fixedly connected to the lifting clamp 203 with bolts; a lower clamping base 205 is provided below the upper clamping base 204, and the lower clamping base 205 is fixedly connected to the clamping mechanism bracket 201; positioning clamps 206 are provided on both sides of the front of the lower clamping base 205; the lifting clamp A calibration contact sensor 208 is provided at the rear between 203 and the lifting clamp cylinder 202; third welding point detection sensors 207 are provided on both sides of the lower side of the lifting clamp cylinder 202 and on both sides of the lower clamping base 205; an air pump motor 209 is fixedly provided at the rear end of the clamping mechanism bracket 201, and the air pump motor 209 is connected to the air pump air supply pipeline of the downward clamping tooling assembly 2; a six-axis robot arm 301 is provided in front of the central clamping tooling assembly 1, and the six-axis robot arm 301 is a robot arm structure with six-axis direction rotation adjustment; cylinder clamps 302 are provided at the rear of both sides of the rotating adjustment head of the output adjustment end of the six-axis robot arm 301, and the cylinder clamps 302 are provided for inward clamping movement.

[0029] During operation, the cylinder clamp 302 of the five-axis robotic arm assembly 3 clamps the automobile spring arm, and then the six-axis robotic arm 301 adjusts the posture. The welding part is then placed in the central clamping fixture assembly 1 and the downward clamping fixture assembly 2 in sequence to perform the welding part inspection function, thereby effectively improving the inspection efficiency of the automobile spring arm welding assembly and reducing the assembly error problem of manual inspection. This solves the problem of an existing inspection fixture for automobile spring arm welding assembly, which has inaccurate clamping and positioning of the automobile spring arm and is time-consuming and labor-intensive to clamp and mount, resulting in deviations in the inspection of the welding points and the need for frequent adjustment of the fixture posture.

[0030] Next, the welding part of the automobile spring arm is placed between the two center clamps 103, and then the front and rear feed cylinders 105 drive the front and rear clamps 104 to feed forward and clamp the welding part of the automobile spring arm. The first welding point detection sensor 106 is used to detect the clamping stability between the workpiece and the center clamp 103 and the front and rear clamps 104 to improve the clamping accuracy. Then, the lifting platform cylinder 108 is used to drive the lifting platform 102 to control the lifting of the welding part of the automobile spring arm, thereby realizing the second welding point detection sensor 107 to perform ultrasonic welding detection and analysis on the welding points on the side of the workpiece layer by layer. The welding part of the automobile spring arm passes through the center clamping tooling assembly. 1, the five-axis robot arm assembly 3 places the end of the workpiece on the lower clamping base 205 of the downward clamping tooling assembly 2. At this time, the rear end face of the upper end of the workpiece is close to the calibration contact sensor 208. The calibration contact sensor 208 is used to determine whether the upper end of the workpiece is close to it for calibration and positioning, thereby maintaining the vertical placement accuracy of the workpiece. After that, the lifting fixture cylinder 202 drives the lifting fixture 203 to descend so that the upper clamping base 204 clamps and fixes the corner between the end and the horizontal spring arm. As the third welding point detection sensor 207 analyzes the welding point of the clamping part, the ultrasonic detection and analysis function of the welding point is realized.

[0031] Through the above steps, the automobile spring arm is clamped by the cylinder clamp 302 of the five-axis robotic arm assembly 3, and then the posture is adjusted by the six-axis robotic arm 301, and the welding part is placed in the central clamping tooling assembly 1 and the downward clamping tooling assembly 2 in turn to perform the welding part detection function, thereby effectively improving the detection efficiency of the automobile spring arm welding assembly and reducing the assembly error problem of manual detection, avoiding the existing inspection tooling for the automobile spring arm welding assembly, because its clamping and positioning of the automobile spring arm is not accurate, the clamping and mounting is time-consuming and labor-intensive, resulting in the detection of its welding points being prone to deviations and the need to frequently adjust the fixture posture.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A testing fixture for an automobile spring arm welding assembly, comprising a center clamping fixture component (1), characterized in that: The invention also includes a downward clamping tool assembly (2) and a six-axis robot arm assembly (3); the central clamping tool assembly (1) includes a central clamp bracket (101), a lifting platform (102), a central clamp (103), front and rear clamps (104), front and rear feed cylinders (105), a first welding point detection sensor (106), and a second welding point detection sensor (107); the downward clamping tool assembly (2) includes a clamping mechanism bracket (201), a lifting clamp cylinder (202), a lifting clamp (203), an upper clamping base (204), a lower clamping base (205), a positioning clamp (206), a third welding point detection sensor (207), and a calibration contact sensor (208).

2. The inspection tool for automobile spring arm welding assembly according to claim 1, characterized in that: A downward clamping fixture assembly (2) is provided on both sides of the central clamping fixture assembly (1); a six-axis robotic arm assembly (3) is provided in front of the central clamping fixture assembly (1); a lifting platform (102) is provided above the central clamp bracket (101), and the lifting platform (102) is connected to the central clamp bracket (101) in a vertical direction so as to be lifted and moved; a lifting platform cylinder (108) is provided in front of the central clamp bracket (101), and the shell of the lifting platform cylinder (108) is fixedly connected to the central clamp bracket (101); the lifting platform cylinder (108) drives the lifting platform (102) to be lifted and moved.

3. The inspection tool for automobile spring arm welding assembly according to claim 2, characterized in that: A central clamp (103) is provided on both sides of the front end of the lifting platform (102), and the central clamp (103) is fixedly connected to the lifting platform (102) by bolts; a front and rear clamp (104) is provided at the rear between the two central clamps (103); a front and rear feeding cylinder (105) is provided at the rear end of the front and rear clamps (104), and the shell of the front and rear feeding cylinder (105) is fixedly connected to the lifting platform (102), and the front and rear feeding cylinder (105) drives the front and rear clamps (104) to move forward and backward.

4. The inspection tool for automobile spring arm welding assembly according to claim 3, characterized in that: A first welding point detection sensor (106) and a second welding point detection sensor (107) are respectively provided on the outer side of the central clamp (103) and the lower side of the central clamp (103), and the housing of the first welding point detection sensor (106) is fixedly connected to the lifting platform (102).

5. The inspection tool for automobile spring arm welding assembly according to claim 1, characterized in that: A clamping mechanism bracket (201) is provided on both sides of the central clamp bracket (101); a lifting clamp cylinder (202) is provided on the upper end of the clamping mechanism bracket (201); a lifting clamp (203) is provided below the lifting clamp cylinder (202), and the lifting clamp cylinder (202) drives the lifting clamp (203) to lift and lower in a transmission connection; an upper clamping base (204) is provided at the lower end of the lifting clamp (203), and the upper clamping base (204) and the lifting clamp (203) are fixedly connected by bolts; a lower clamping base (205) is provided below the upper clamping base (204), and the lower clamping base (205) is fixedly connected to the clamping mechanism bracket (201); and positioning clamps (206) are provided on both sides of the front of the lower clamping base (205).

6. The inspection tool for automobile spring arm welding assembly according to claim 5, characterized in that: A calibration contact sensor (208) is provided at the rear between the lifting fixture (203) and the lifting fixture cylinder (202); third welding point detection sensors (207) are provided on both sides below the lifting fixture cylinder (202) and on both sides of the lower clamping base (205); an air pump motor (209) is fixedly provided at the rear end of the clamping mechanism bracket (201), and the air pump motor (209) is connected to the air pump air supply pipeline of the downward pressing clamping tooling assembly (2).

7. The inspection tool for automobile spring arm welding assembly according to claim 1, characterized in that: A six-axis mechanical arm (301) is provided in front of the central clamping tool assembly (1), and the six-axis mechanical arm (301) is a mechanical arm structure capable of rotating and adjusting in six directions.

8. The inspection tool for automobile spring arm welding assembly according to claim 7, characterized in that: Cylinder clamps (302) are provided at the rear of both sides of the rotating adjustment head of the output adjustment end of the six-axis mechanical arm (301), and the cylinder clamps (302) are provided for inward clamping movement.

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