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CN-122028998-A - Rotary member for friction stir, robot-type joint device, and joint member

CN122028998ACN 122028998 ACN122028998 ACN 122028998ACN-122028998-A

Abstract

The purpose of the present invention is to provide a friction stir rotating member that can suppress the occurrence of joint defects and can achieve high-strength joining when friction stir welding is performed. A friction stir rotating member provided in a joint device for friction stir welding of members to be joined, wherein the friction stir rotating member is configured to generate a play capable of vibrating a pin portion with respect to an output shaft between the output shaft and the pin portion inserted into the members to be joined during friction stir welding in a state of being provided on the output shaft of a drive mechanism in a manner rotated by rotation output from the drive mechanism provided in the joint device.

Inventors

  • SATO IPPEI
  • Netsu Miyuki
  • Gao Yanyiyou

Assignees

  • 京浜乐梦金属科技株式会社

Dates

Publication Date
20260512
Application Date
20241021
Priority Date
20240205

Claims (18)

  1. 1. A friction stir rotating member provided in a joint device for friction stir welding of members to be joined, characterized in that, The friction stir rotating member is configured to generate play between the output shaft and a pin portion inserted into the member to be joined during friction stir in a state of being rotatably provided on the output shaft of the drive mechanism by rotation output from the drive mechanism provided in the joining device, the play being capable of vibrating the pin portion with respect to the output shaft.
  2. 2. The rotary member for friction stir welding according to claim 1, further comprising a drop-off preventing structure that prevents the pin from dropping off from the output shaft.
  3. 3. The rotary member for friction stir welding according to claim 1 or 2, characterized in that the rotary member for friction stir welding comprises: a rotary shaft portion provided on the output shaft, and A distal end portion configured to rotate by rotation transmitted from the rotation shaft portion and located on a distal end side of the rotation shaft portion, The tip portion has the pin portion and a base end side portion provided on a base end side of the pin portion, or does not have the pin portion, but has a base end side portion configured to removably mount the pin portion, The play is provided between the rotating shaft portion and the leading end portion to enable the pin portion to vibrate with respect to the rotating shaft portion, The friction stir rotating member is configured such that the play causes vibration of the pin portion to have a larger amplitude and/or frequency than vibration of the rotating shaft portion during friction stir.
  4. 4. A rotary part for friction stir welding according to claim 3, wherein, The pin portion has a surface contact portion at a height in contact with a surface of the engaged member, The ratio of the diameter of the surface contact portion to the diameter of the pin portion that is located at the front end of the surface contact portion and is adjacent to the surface contact portion is 1.8 or less, whereby the pin portion is configured to have a shoulder portion or not to have a shoulder portion that is small in width to such an extent that the ratio is satisfied.
  5. 5. The friction stir rotating member according to any one of claims 1 to 4, wherein the friction stir rotating member is configured such that vibration of the pin portion is passively generated by contact with the engaged member that plastically flows within the range of the play.
  6. 6. The friction stir rotating member according to any one of claims 1 to 5, wherein the friction stir rotating member is configured such that vibration of the pin portion occurs in at least one of an axial direction, a circumferential direction, and a radial direction of the pin portion by the play.
  7. 7. The rotary member for friction stir welding according to any one of claims 1 to 6, characterized in that the pin portion is configured to be free or substantially free with respect to the output shaft within the range of the play.
  8. 8. A rotary component for friction stir according to any one of claims 1 to 7 characterized in that the play is a void or substantially a void.
  9. 9. A robot-type joining apparatus for performing friction stir joining of joined members, the robot-type joining apparatus comprising: a robotic arm having at least one joint; The output shaft is arranged at the front end side of the robot arm; the driving mechanism is configured to rotate the output shaft, and The rotary member for friction stir welding according to any one of claims 1 to 8 provided on the output shaft.
  10. 10. A robot-type joining apparatus for friction stir joining of joined members, comprising: a robotic arm having at least one joint; an output shaft provided on the front end side of the robot arm; a driving mechanism configured to rotate the output shaft, and A pin portion configured to be rotated by rotation transmitted from the driving mechanism and to be inserted into the engaged member during friction stir welding, The pin portion is configured to have a play between the output shaft and the pin portion, the play being provided so as to enable the pin portion to vibrate with respect to the output shaft.
  11. 11. The robotic engagement device of claim 10, wherein the pin portion is configured such that, with the play, vibration of the pin portion during friction stir has a greater amplitude and/or frequency than vibration of the output shaft.
  12. 12. A robot-type joining apparatus for friction stir joining of joined members, comprising: a robotic arm having at least one joint; an output shaft provided on the front end side of the robot arm; A drive mechanism configured to rotate the output shaft; A pin portion provided on a front end side of the output shaft; A control unit that controls the drive mechanism to rotate the pin portion by rotation output from the drive mechanism and insert the pin portion into the engaged member to perform friction stir welding of the engaged member, and A detecting part for detecting the rotation state of the pin part, The control unit performs feedback control of the driving mechanism based on the rotation state of the pin portion detected by the detection unit so that an output of the driving mechanism is changed in synchronization with or following a rotation fluctuation of the pin portion passively generated by contact with the engaged member in plastic flow, and friction-stir the engaged member.
  13. 13. The robotic engagement device of any one of claims 9-12, wherein the robotic arm is a multi-joint robotic arm having a plurality of joints.
  14. 14. The robotic joining device according to any one of claims 9 to 13, wherein the robotic arm has a position adjustment mechanism configured to adjust an insertion depth of the pin portion with respect to the joined member in an opposing direction of the joined member and the pin portion.
  15. 15. A joint member manufactured by friction stir welding using the rotating member for friction stir welding according to any one of claims 1 to 8.
  16. 16. The joint according to claim 15, wherein the joint is applied to any one of an automobile, a railway vehicle, an aircraft, a ship, and a rocket.
  17. 17. The joining component according to claim 15, wherein the joining component is applied to any one of an electrode component, an air conditioning apparatus, a water-cooled or air-cooled power control unit, a water-cooled or air-cooled battery case, a door panel, a damper, a suspension link, a waveguide, an antenna, a motor cover, a brewing canister, a vacuum device component, a sputtering target, and a buried heater.
  18. 18. The joined member according to any one of claims 15 to 17, wherein the joined member is a member produced by friction stir joining a plurality of plates having different thicknesses, or a member produced by friction stir joining a plurality of members made of different materials.

Description

Rotary member for friction stir, robot-type joint device, and joint member Technical Field The present invention relates to a friction stir welding (FSW, friction STIR WELDING) related rotary member for friction stir welding, a robot type welding device, and a welding member. Background In patent document 1, a stirring pin is disposed on a main body portion so as to be rotatable and movable with respect to an axial direction of a rotary shaft by receiving a rotational force from the main body portion. Further, a first elastic member (for example, a coil spring) is provided to urge the stirring pin toward the distal end side with respect to the axial direction of the rotary shaft. The shoulder portion is disposed on the main body portion so as to be movable independently of the stirring pin in the axial direction of the rotation shaft without receiving a rotational force from the main body portion. Further, a second elastic member is provided that urges the shoulder portion toward the distal end side with respect to the axial direction of the rotation shaft. In a state where the stirring pin is pressed into the engaged member at a constant height, even if the height of the engaged member changes, the first elastic member deforms with the change of the engaged member, so that the amount of insertion of the stirring pin is kept constant ([ 0041 ]). Since the stirring pin is inserted into the engaged member at a constant depth by the action of the first elastic member, a plasticized region ([ 0071 ]) is formed at a certain depth. As described above, in the technique of patent document 1, the first elastic member biases the stirring pin toward the member to be joined, and the stirring pin is inserted into the member to be joined at a predetermined depth. In patent document 2, the stirring pin and the shoulder constitute an assembly. The assembly is relatively rotatable and integrally movable with respect to the axial direction of the rotary shaft. Further, a first elastic member (for example, a coil spring) is provided, and biases the assembly toward the tip end side of the stirring pin with respect to the axial direction of the rotation shaft. In the technique of patent document 2, too, the first elastic member keeps the amount of stirring pin inserted constant, and the plasticized region ([ 0033], [0052 ]) is formed at a constant depth. In patent document 3, the rotary tool includes a main body and a stirring member. The main body portion has a fixing portion mounted and fixed on the engagement device and a rotation shaft transmitting a rotation force from the engagement device. The stirring member has a stirring pin, is provided so as to be rotatable by receiving a rotational force from the rotation shaft, and is provided to the main body so as to be movable in an axial direction of the rotation shaft. Further, an elastic member (coil spring) is provided, and the elastic member biases the stirring member toward the distal end side in the axial direction of the rotation shaft. In the technique of patent document 3, too, the amount of stirring pin insertion is kept constant by an elastic member, and a plasticized region is formed at a constant depth ([ 0035], [0051 ]). In any one of patent documents 1 to 3, the stirring pin is biased toward the member to be joined by an elastic member (coil spring) and is pressed against the member to be joined, and the amount of insertion of the stirring pin is kept constant, so that a plasticized region is formed at a constant depth. Prior art literature Patent literature Patent document 1 Japanese patent laid-open No. 2023-069370 Patent document 2 Japanese patent application laid-open No. 2023-069371 Patent document 3 Japanese patent laid-open No. 2023-069372 Disclosure of Invention Problems to be solved by the invention It is desirable to provide a friction stir welding rotating member, a robot type welding device, and a welding member that can suppress occurrence of welding defects and realize high-strength welding when friction stir welding is performed. The purpose of the present invention is to provide a friction stir welding rotating member, a robot-type welding device, and a welding member, which can suppress the occurrence of welding defects and can achieve high-strength welding when friction stir welding is performed. Means for solving the problems The present inventors have conducted intensive studies in view of the above problems and have obtained the following findings. Conventionally, in friction stir welding, a support structure of a stirring pin has been designed based on the design concept of how the stirring pin is friction-stirred in a stable state. Therefore, an external force is also forcibly applied, such as how the stirring pin is forced toward the engaged member to stably press and insert the engaged member. In patent documents 1 to 3, the elastic member is also provided to form a plasticized region at a constant depth while keeping the amount of the s