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CN-224216444-U - Automatic detection equipment for stud welding strength

CN224216444UCN 224216444 UCN224216444 UCN 224216444UCN-224216444-U

Abstract

The utility model relates to the technical field of automobile production, in particular to automatic detection equipment for stud welding strength, which comprises a cooperative robot and a detection head connected to the tail end of the cooperative robot, wherein the detection head comprises a stud sleeve, a torque sensor arranged between the stud sleeve and the cooperative robot, and a control system respectively connected with the cooperative robot and the torque sensor. The utility model aims to overcome the defects that the existing stud welding strength mainly depends on manual operation, the quantification of detection data cannot be realized and the process is traceable, and the utility model avoids the bad risk of products caused by manual subjective judgment, realizes the automation of strength detection, realizes the quantification of data, the traceability of the process, the management analysis of strength trend and the like.

Inventors

  • LIU JING
  • LIAO DUAN
  • YANG LEI
  • ZOU FENGLIN
  • HOU JIANWEI
  • YUE JIN

Assignees

  • 广汽传祺汽车有限公司

Dates

Publication Date
20260508
Application Date
20250523

Claims (10)

  1. 1. The automatic stud welding strength detection device is characterized by comprising a cooperative robot (1), a detection head (2) connected to the tail end of the cooperative robot (1), wherein the detection head (2) comprises a stud sleeve (21), a torque sensor (22) arranged between the stud sleeve (21) and the cooperative robot (1), and a control system respectively connected with the cooperative robot (1) and the torque sensor (22).
  2. 2. An automated stud welding strength detection apparatus according to claim 1, wherein the detection head (2) further comprises a mounting flange (23) for connection to the end of the co-operating robot (1), the mounting flange (23) being arranged coaxially with the stud sleeve (21).
  3. 3. The automatic stud welding strength detection device according to claim 2, wherein the torque sensor (22) is a six-dimensional torque sensor (22), the torque sensor (22) is located between the mounting flange (23) and the stud sleeve (21), and the torque sensor (22) is coaxially arranged with the stud sleeve (21) and the mounting flange (23).
  4. 4. The automatic stud welding strength detection device according to claim 1, wherein the inner diameter of the stud sleeve (21) is 1 mm-2 mm larger than the outer diameter of the stud (100) to be detected.
  5. 5. The automatic stud welding strength detection device according to claim 4, wherein the depth of the stud sleeve (21) is 3 mm-5 mm longer than the length of the stud (100) to be detected.
  6. 6. An automated stud welding strength detection apparatus according to claim 1, further comprising a detection station, the detection station being located within the working range of the collaborative robot (1).
  7. 7. The automatic stud welding strength detection equipment according to claim 6, wherein the detection table comprises an automatic guiding vehicle (31), a supporting frame (32) arranged on the automatic guiding vehicle (31) and used for placing a workpiece, and a positioning fixture (33) arranged above the supporting frame (32), and the automatic guiding vehicle (31) is connected with the control system.
  8. 8. The automatic stud welding strength detection apparatus as claimed in claim 7, wherein the support frame (32) is a frame structure.
  9. 9. The automated stud welding strength detection apparatus of claim 1, further comprising an audible and visual alarm device coupled to the control system.
  10. 10. The automated stud welding strength detection apparatus of claim 1, wherein the control system includes a control processor, and an operation panel and a display panel respectively connected to the control processor.

Description

Automatic detection equipment for stud welding strength Technical Field The application relates to the technical field of automobile production, in particular to automatic stud welding strength detection equipment. Background In the white automobile body manufacturing engineering, a plurality of studs are required to be welded on a workpiece, the studs are adopted to contact the workpiece in stud welding, a stud clamping mechanism is utilized to lift the studs after the power is on, stable combustion electric arcs appear between the studs and the workpiece, the tops of the studs and the surface of the workpiece are melted by the electric arcs, the stud clamping mechanism presses the studs to sink to a workpiece molten pool, and stud welding is formed after the power is off. The conventional stud welding strength detection method is hammering detection, the stud is knocked by a 0.5 pound rubber hammer according to a specified angle and strength, the distance of the rubber hammer is within a range of 20 cm-30 cm, the angle alpha is larger than 45 degrees, the hammer falls freely, the knocking strength angle beta is smaller than 45 degrees, the knocking direction is ensured, the stud is knocked positively and negatively, and the stud does not fall off to be qualified. The stud welding strength hammering detection method only depends on the assurance of operators, subjective individual differences exist when the operator's operation habit degree requirement is high, the detection data cannot be quantized and the process can be traced, the welding strength is poor and easy to flow out, and the quality problem is caused. Disclosure of utility model Based on the defects that the existing stud welding strength mainly depends on manual operation and the detection data cannot be quantized and the process is traceable are overcome, the utility model provides automatic stud welding strength detection equipment. The utility model avoids the bad risk of products caused by manual subjective judgment, realizes the automation of intensity detection, realizes the quantification of data, has traceable process, manages and analyzes the intensity trend and the like. In order to solve the technical problems, the utility model adopts the following technical scheme: The automatic detection equipment for the welding strength of the stud comprises a cooperative robot, a detection head connected to the tail end of the cooperative robot, a control system and a torque sensor, wherein the detection head comprises a stud sleeve, the torque sensor is arranged between the stud sleeve and the cooperative robot, and the control system is respectively connected with the cooperative robot and the torque sensor. The utility model discloses a method for detecting the welding strength of a stud by using a self-adaptive force control cooperative robot, which is characterized in that a cooperative robot is introduced to replace manual repeated operation in an automatic detection mode, a detection head connected with the tail end of the cooperative robot is designed to detect the welding strength of the stud, the cooperative robot controls a stud sleeve to cover the welding stud and then carries out programmed action operation through a control system, a torque sensor collects real-time transmission stud strength torque information to the control system, the control system collects, processes and counts measurement data, and displays stud welding strength information and qualification rate statistics information or abnormal warning in real time, and man-machine interaction friendly to field operators is constructed. Further, the detection head further comprises a mounting flange used for being connected with the tail end of the cooperative robot, and the mounting flange and the stud sleeve are coaxially arranged. Further, the torque sensor is a six-dimensional torque sensor, the torque sensor is located between the mounting flange and the stud sleeve, and the torque sensor, the stud sleeve and the mounting flange are coaxially arranged. The utility model adopts a six-dimensional torque sensor to perform data detection, and is firmly connected with a cooperative robot through a mounting flange, the six-dimensional torque sensor is coaxially connected with the stud sleeve and the mounting flange, so that the six-dimensional torque sensor can more accurately sense the torque change caused by the angle change of the stud sleeve, and the six-dimensional torque sensor can respectively detect the torque in a plurality of directions and set torque to compare and judge whether the stud strength is qualified or not. Further, the inner diameter of the stud sleeve is 1 mm-2 mm larger than the outer diameter of the stud to be tested. Further, the depth of the stud sleeve is 3 mm-5 mm longer than the length of the stud to be tested. It should be noted that, the inner diameter and depth of the stud sleeve are designed to be redundant to the size of the stud to be