Friction welding temperature measuring structure

Abstract

The utility model discloses a temperature measuring structure for friction welding, which comprises a welding head, a temperature measuring device and a temperature measuring device, the two temperature measuring metal pieces are arranged at intervals, the two temperature measuring metal pieces are made of different metal materials, at least parts of the temperature measuring metal pieces are inserted into the welding head, and the lower ends of the temperature measuring metal pieces extend to the friction surface or are adjacent to the friction surface; the temperature measuring metal pieces are wrapped with insulating structures, and the lower ends of the two temperature measuring metal pieces are flush with the friction face or electrically connected with the friction face. And two electric connection seats are arranged at the bottom of the female seat and are electrically connected with the two temperature measurement metal pieces respectively. According to the welding head, the two temperature measuring metal pieces made of different materials are arranged and located in the welding heating core area, the thermoelectric force of the two temperature measuring metal pieces is used for representing the welding temperature when welding is measured, the temperature measuring requirement of the welding head does not need to be considered, the material selection range of the welding head is expanded, the requirement for the materials of the welding head is reduced, and the welding efficiency is improved. The cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of friction welding, and particularly to a temperature measuring structure for friction welding. Background Art

[0002] Friction stir welding is carried out by inserting a high-speed rotating stirring head into the joint of the workpieces to be welded. The stirring head generates heat by friction with the material, making the material soften and undergo plastic deformation, thereby achieving welding. This welding method does not require adding welding wires or protective gases, so the welding process is pollution-free, smokeless, and radiation-free, and has the advantages of high welding efficiency, small welding deformation, low energy consumption, simple equipment, and safe welding process.

[0003] In order to control the working conditions of friction stir welding, the temperature of the welding area is usually measured. For example, in patent CN202410464458.6, a thermocouple is used to measure the temperature. Since the materials of the metal part and the welding head are different, the temperature is measured through the thermoelectric effect. However, for this solution, the material of the welding head not only needs to meet the temperature measurement requirements but also the welding requirements, that is, it needs to have good high-temperature strength and wear resistance, resulting in a smaller selection range of the material of the welding head and more difficult cost control. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a temperature measuring structure for friction welding, which reduces the requirements for the material of the welding head.

[0005] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0006] A temperature measuring structure for friction welding, comprising: a welding head with a friction surface at the bottom; two temperature measuring metal parts arranged at intervals, with different metal materials for the two temperature measuring metal parts. At least part of the temperature measuring metal parts are inserted into the welding head, and the lower ends extend to the friction surface or are adjacent to the friction surface; an insulating structure is wrapped outside the temperature measuring metal parts, and the lower ends of the two temperature measuring metal parts are flush with the friction surface or the lower ends of the two temperature measuring metal parts are electrically connected; a female seat, with two electrical connection seats provided at the bottom, and the two electrical connection seats are respectively electrically connected to the two temperature measuring metal parts; and an electrical connection wire extending out of the female seat is connected to each of the two electrical connection seats.

[0007] Further, the welding head includes a welding head body and a cover plate, and the cover plate is fixedly installed at the upper end of the welding head body; a first jack is provided on the upper end surface of the welding head body, and a second jack is provided on the cover plate, and the temperature measuring metal part passes through the first jack and the second jack.

[0008] Further, the second jack is a stepped hole with a narrower upper part and a wider lower part, and a first insulating sleeve adapted to the second jack is installed in the second jack, and a through hole for the temperature measuring metal part to pass through is provided at the center of the first insulating sleeve.

[0009] Further, two first jacks and two second jacks are provided for the two temperature-measuring metal parts to pass through respectively, and a second insulating sleeve is installed between the temperature-measuring metal part and the inner wall of the corresponding first jack.

[0010] Further, one first jack is provided, a bundled insulating sleeve is inserted into the first jack, the bundled insulating sleeve is provided with two mounting holes arranged at intervals, and the temperature-measuring metal part is partially inserted into the mounting holes.

[0011] Further, two second jacks are arranged at intervals for the upper ends of the two temperature-measuring metal parts to pass through. A sunken transition groove is provided at the upper end of the welding head body. The temperature-measuring metal part includes a contact part, a detection part and an extension part; the contact part passes through the through hole, and the upper end is used to contact the electrical connection base; the detection part passes through the mounting hole; the extension part is located in the transition groove, and both ends of the extension part are respectively connected to the contact part and the detection part. The extension parts on the two temperature-measuring metal parts gradually move away from each other from bottom to top, and an insulating wrapping structure is wrapped outside the extension part, and the insulating wrapping structure is embedded in the transition groove.

[0012] Further, the upper end of the temperature-measuring metal part protrudes from the welding head to contact the electrical connection base.

[0013] Further, the electrical connection base includes an elastic sheet capable of vertically elastic deformation, and the elastic sheet contacts the upper end of the temperature-measuring metal part.

[0014] Further, the electrical connection base has a concave arc groove, and the upper end of the temperature-measuring metal part has a contact head adapted to the arc groove.

[0015] Further, an elastic member is provided at the upper end of the female seat, which can apply an elastic acting force towards the temperature-measuring metal part to the female seat and the electrical connection base during assembly.

[0016] The utility model has the following beneficial effects:

[0017] By providing two temperature-measuring metal parts with different materials and the temperature-measuring metal parts are in the core area of welding heat generation (near the friction surface), measuring the thermoelectric potential of the two temperature-measuring metal parts during welding to characterize the welding temperature, so that the welding head does not need to consider the temperature measurement requirements, expanding the material selection range of the welding head, reducing the requirements for the material of the welding head, and reducing costs; the electrical connection base is electrically connected to the two temperature-measuring metal parts to transmit the potential information, and the insulating structure avoids the connection between the temperature-measuring metal part and the welding head at other positions except the lower end position, avoiding inaccurate temperature measurement; and the welding head and the female seat are separately arranged, which is convenient for disassembling and replacing the welding head.

[0018] In addition to the purposes, features, and advantages described above, the present utility model has other purposes, features, and advantages. The following will refer to the drawings for a further detailed description of the present utility model. Brief Description of the Drawings

[0019] The drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0020] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 2 is a schematic diagram of the exploded state structure of the welding head;

[0022] Figure 3 is Figure 1 a partial cross-sectional view of

[0023] Figure 4 is a partial cross-sectional view of an embodiment of the present utility model;

[0024] Figure 5 is a schematic diagram of the structure during installation of an embodiment of the present utility model;

[0025] Figure 6 is Figure 5 an enlarged view of part A of

[0026] Figure 7 is a partial cross-sectional view of an embodiment of the present utility model;

[0027] Figure 8 is a partial cross-sectional view at the friction surface of an embodiment of the present utility model;

[0028] Figure 9 is a partial cross-sectional view at the friction surface of an embodiment of the present utility model;

[0029] Figure 10 is a partial cross-sectional view at the friction surface of an embodiment of the present utility model;

[0030] Figure 11 is a schematic diagram of the exploded state structure of an embodiment of the present utility model.

[0031] Legend:

[0032] Welding head 100, workpiece to be welded 101, friction surface 110, welding head body 130, first socket 131, second insulating sleeve 132, bundled insulating sleeve 133, mounting hole 134, transition groove 135, cover plate 140, second socket 141, first insulating sleeve 142, through hole 143, positioning projection 144;

[0033] Temperature measuring metal part 200, contact part 210, detection part 220, extension part 230, insulating wrapping structure 231, contact head 240, thick head 250, contact head 260;

[0034] Female seat 300, electrical connection seat 310, elastic piece 311, electrical connection wire 320;

[0035] Elastic part 400;

[0036] Welding sleeve 500, mounting hole 510, screw 520. Specific embodiments

[0037] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0041] Please refer to Figure 1 and Figure 2 In a preferred embodiment of the friction welding temperature measuring structure provided by the present invention, it includes a welding head 100, a temperature measuring metal part 200 and a female seat 300.

[0042] The bottom of the welding head 100 has a friction surface 110, and the friction surface 110 is used to contact the workpiece to be welded 101.

[0043] There are two temperature - measuring metal parts 200 arranged at intervals. The metal materials of the two temperature - measuring metal parts 200 are different. The temperature - measuring metal parts 200 are at least partially inserted into the welding head 100, and the lower ends of the temperature - measuring metal parts 200 extend to the friction surface 110 or are adjacent to the friction surface 110. In some embodiments, the lower ends of the temperature - measuring metal parts 200 extend to the friction surface 110, so as to measure the temperature at the core position of the welding. The temperature - measuring metal parts 200 are wrapped with an insulating structure. The lower ends of the two temperature - measuring metal parts 200 are flush with the friction surface 110 or the lower ends of the two temperature - measuring metal parts 200 are electrically connected. At most, only the lower - end positions of the temperature - measuring metal parts 200 are not wrapped by the insulating structure, and the rest of the positions are insulated from the welding head 100. When the lower ends of the two temperature - measuring metal parts 200 are flush with the friction surface 110 and the workpiece to be welded 101 is processed, the lower ends of the two temperature - measuring metal parts 200 will contact the surface of the workpiece to be welded 101, so as to realize the electrical connection of the two temperature - measuring metal parts 200 by using the workpiece to be welded 101.

[0044] Two electrical connection seats 310 are provided at the bottom of the female seat 300. The two electrical connection seats 310 are respectively electrically connected to the two temperature - measuring metal parts 200. Each of the two electrical connection seats 310 is connected with an electrical connection wire 320 extending out of the female seat 300.

[0045] A friction - welding temperature - measuring structure provided by the present utility model, by arranging two temperature - measuring metal parts 200 with different materials and the temperature - measuring metal parts 200 being in the core area of welding heat generation (near the friction surface 110), measuring the thermoelectric potential of the two temperature - measuring metal parts during welding to characterize the welding temperature, enables the material of the welding head not to consider the temperature - measuring requirements, expands the range of material selection for the welding head, reduces the requirements for the material of the welding head, and reduces costs; the electrical connection seat 310 is electrically connected to the two temperature - measuring metal parts 200 to transmit the potential information, and the insulating structure avoids the connection between the temperature - measuring metal parts 200 and the welding head 100 at other positions except the lower - end position, avoiding inaccurate temperature measurement; and the welding head 100 and the female seat 300 are separately arranged, which is convenient for disassembling and replacing the welding head 100. When replacing the welding head 100, only the single welding head 100 needs to be removed, without affecting the arrangement of the electrical connection wires 320 on the female seat 300. If the material of the welding head 100 needs to meet both the welding requirements and the temperature - measuring requirements at the same time, the range of material selection is small, and the material cost that meets these two requirements is usually higher, while the friction - welding temperature - measuring structure of the present application well avoids these defects.

[0046] Referring to Figure 2 and Figure 6 In some embodiments of the present utility model, in order to improve the positioning and assembly of the female seat 300 and the welding head 100, a positioning protrusion 144 is provided at the upper - end edge of the welding head 100, and the female seat 300 is provided with an avoidance position adapted to the positioning protrusion 144.

[0047] Reference Figure 2 , in some embodiments of the present utility model, the soldering head 100 includes a soldering head body 130 and a cover plate 140. The cover plate 140 is fixedly installed at the upper end of the soldering head body 130. Specifically, corresponding holes are provided on the cover plate 140 and the soldering head body 130 for fixing by screws. It can be understood that in order to achieve positioning connection, a boss is provided at the upper end of the soldering head body 130, and a positioning groove for the boss to be embedded is provided at the bottom of the cover plate 140. A first jack 131 is provided on the upper end surface of the soldering head body 130, and a second jack 141 is provided on the cover plate 140. The temperature-measuring metal part 200 passes through the first jack 131 and the second jack 141.

[0048] Reference Figure 2 and Figure 3 , in a further embodiment of the present utility model, the insulating structure includes a first insulating sleeve 142; the second jack 141 is a stepped hole with a narrower upper part and a wider lower part. A first insulating sleeve 142 adapted to the second jack 141 is installed in the second jack 141. The stepped hole facilitates the first insulating sleeve 142 to be pressed. A through hole 143 for the temperature-measuring metal part 200 to pass through is provided at the center of the first insulating sleeve 142, which is beneficial for the first insulating sleeve 142 to insulate the temperature-measuring metal part 200 from the cover plate 140.

[0049] Reference Figure 1 and Figure 3 , in a further embodiment of the present utility model, the insulating structure further includes a second insulating sleeve 132. Two first jacks 131 and two second jacks 141 are provided for two temperature-measuring metal parts 200 to pass through respectively. The first jack 131 and the second jack 141 are vertically aligned and communicated. A second insulating sleeve 132 is installed between the temperature-measuring metal part 200 and the inner wall of the corresponding first jack 131. Both the first insulating sleeve 142 and the second insulating sleeve 132 can be made of ceramic material. As Figure 1 shown, the lower ends of the two temperature-measuring metal parts 200 are flush with the friction surface 110, so that when processing the workpiece to be welded 101, the lower ends of the temperature-measuring metal parts 200 will contact the surface of the workpiece to be welded 101, and the two temperature-measuring metal parts 200 are conductively connected by using the workpiece to be welded 101. As Figure 1 shown, in some embodiments, both the temperature-measuring metal part 200 and the second insulating sleeve 132 extend to the friction surface 110, and the lower end of the temperature-measuring metal part 200 is still insulated from the peripheral wall of the first jack 131. Of course, in some embodiments, the second insulating sleeve 132 may not cover the lower end of the temperature-measuring metal part 200, so that the lower end of the temperature-measuring metal part 200 contacts the soldering head 100.

[0050] Of course, in some embodiments, reference Figure 8 , the bottom of the temperature-measuring metal part 200 is provided with a thick head 250, the peripheral wall of the thick head 250 is in interference fit with the first jack 131, and the bottom surface of the thick head 250 is flush with the friction surface 110.

[0051] Referring to Figure 4 and Figure 11 In other embodiments of the present utility model, the insulation structure includes a bundled insulation sleeve 133. There is one first jack 131, and the bundled insulation sleeve 133 is inserted into the first jack 131. The bundled insulation sleeve 133 is provided with two spaced mounting holes 134, and a part of the temperature measuring metal piece 200 is inserted into the mounting holes 134. This makes the lower ends of the two temperature measuring metal pieces 200 closer, the temperature measuring positions closer, the temperature measuring more sensitive and with higher accuracy. The bundled insulation sleeve 133 can effectively achieve insulation between the two temperature measuring metal pieces 200 and between the temperature measuring metal piece 200 and the peripheral wall of the first jack 131, and the solder head body 130 only needs to be processed with one hole position, which is convenient for processing. The bundled insulation sleeve 133 can be made of ceramic material.

[0052] Referring to Figure 4 and Figure 11 In a further embodiment of the present utility model, two second jacks 141 are spaced for the upper ends of the two temperature measuring metal pieces 200 to pass through. The upper end of the solder head body 130 is provided with a sunken transition groove 135. The temperature measuring metal piece 200 includes a contact portion 210, a detection portion 220, and an extension portion 230; the contact portion 210, the detection portion 220, and the extension portion 230 can be integrally formed or can be connected in segments by welding. The contact portion 210 passes through the through hole 143, and the upper end of the contact portion 210 is used to contact the electrical connection base 310; the detection portion 220 passes through the mounting hole 134; the extension portion 230 is located in the transition groove 135, and both ends of the extension portion 230 are respectively connected to the contact portion 210 and the detection portion 220. The extension portion 230 is wrapped with an insulation wrapping structure 231, and the insulation wrapping structure 231 is embedded in the transition groove 135. The extension portions 230 on the two temperature measuring metal pieces 200 gradually move away from bottom to top, so that the distance between the contact portions 210 at the upper ends of the two temperature measuring metal pieces 200 becomes larger, which is convenient for the contact portion 210 to contact the upper electrical connection base 310, and also avoids the inconvenient arrangement of the two electrical connection bases 310 due to the too small distance between the two contact portions 210. Through the three-stage arrangement of the contact portion 210, the detection portion 220, and the extension portion 230, the lower ends of the temperature measuring metal pieces 200 are close to each other and the upper ends are separated. And it is beneficial to the insulation structure composed of the first insulation sleeve 142, the bundled insulation sleeve 133, and the insulation wrapping structure 231, so that the temperature measuring metal piece 200 is insulated from the solder head 100 at least at other positions except the lower end position. The insulation wrapping structure 231 and the first insulation sleeve 142 can be of split design or integrally formed.

[0053] Such as Figure 9As shown, the lower ends of the two temperature-measuring metal parts 200 are flush with the friction surface 110, and electrical connection is achieved by contacting the parts to be welded 101 during processing. Of course, in some other embodiments, such as Figure 10 As shown, the lower ends of the two temperature-measuring metal parts 200 are electrically connected. Specifically, the lower ends of the two temperature-measuring metal parts 200 are electrically connected through the contact head 260. The peripheral wall of the contact head 260 is in interference fit with the first jack 131, and the bottom surface of the contact head 260 is flush with the friction surface 110. The contact head 260 is used to realize the connection and conduction of the lower ends of the two temperature-measuring metal parts 200. Such as Figure 10 As shown, the lower end of the bundled insulating sleeve 133 contacts the upper end surface of the contact head 260. The bundled insulating sleeve 133 does not wrap the contact head 260. Of course, in some other embodiments, the bundled insulating sleeve 133 can also wrap the contact head 260.

[0054] Referring to Figure 3 and Figure 4 , in some embodiments of the present utility model, the upper end of the temperature-measuring metal part 200 protrudes from the welding head 100 and contacts the electrical connection base 310, so as to facilitate electrical contact with the electrical connection base 310.

[0055] Referring to Figure 7 , in some embodiments of the present utility model, the electrical connection base 310 includes an elastic piece 311 that can be elastically deformed vertically. The elastic piece 311 contacts the upper end of the temperature-measuring metal part 200, so that the elastic piece 311 is in elastic contact with the temperature-measuring metal part 200. Under the action of the elastic force, the stability of electrical contact and the reliability of signal conduction are ensured.

[0056] Referring to Figure 6 , in a further embodiment of the present utility model, the electrical connection base 310 has an upwardly concave arc groove, and the upper end of the temperature-measuring metal part 200 has a contact head 240 adapted to the arc groove, so as to achieve concave-convex fit through the arc groove and the contact head 240, making the connection stable.

[0057] Referring to Figure 5 , in a further embodiment of the present utility model, an elastic member 400 is provided at the upper end of the female base 300. The elastic member 400 can be a compression spring. The elastic member 400 is used to apply an elastic force towards the temperature-measuring metal part 200 to the female base 300 and the electrical connection base 310 during assembly, so that the contact head 240 is in close contact with the electrical connection base 310, improving the stability of electrical contact and the reliability of signal conduction.

[0058] Referring to Figure 5, the temperature measurement structure for friction welding is installed on the welding sleeve 500. The welding sleeve 500 is provided with an installation hole 510, and the installation hole 510 is a blind hole. The welding head 100 and the female seat 300 are embedded in the installation hole 510. Threaded holes are provided on the peripheral wall of the installation hole 510, and screws 520 are installed on the threaded holes. The screws 520 are in contact with the peripheral wall of the welding head 100, thereby realizing the connection and fixation of the welding head 100. The welding sleeve 500 is used to connect with the welding spindle on the welding machine, and the welding spindle drives the welding sleeve 500 and the welding head to rotate, thereby realizing friction welding.

[0059] In some embodiments, the elastic member 400 is installed between the top wall of the installation hole 510 and the female seat 300, thereby providing a downward elastic force to the female seat 300.

[0060] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A friction welding temperature measurement structure, characterized in that, Comprising: A welding head (100) with a friction surface (110) at the bottom; Two temperature-measuring metal parts (200) are arranged at intervals. The two temperature-measuring metal parts (200) are made of different metal materials. At least part of the temperature-measuring metal parts (200) are inserted into the welding head (100), and the lower ends extend to the friction surface (110) or are adjacent to the friction surface (110). The outer of the temperature-measuring metal parts (200) is wrapped with an insulating structure. The lower ends of the two temperature-measuring metal parts (200) are flush with the friction surface (110) or the lower ends of the two temperature-measuring metal parts (200) are electrically connected; A female seat (300) with two electrical connection seats (310) provided at the bottom. The two electrical connection seats (310) are respectively electrically connected to the two temperature-measuring metal parts (200). Each of the two electrical connection seats (310) is connected with an electrical connection wire (320) extending out of the female seat (300).

2. The friction welding temperature measurement structure according to claim 1, characterized in that The welding head (100) includes a welding head body (130) and a cover plate (140). The cover plate (140) is fixedly installed at the upper end of the welding head body (130). A first jack (131) is provided on the upper end surface of the welding head body (130), and a second jack (141) is provided on the cover plate (140). The temperature-measuring metal part (200) passes through the first jack (131) and the second jack (141).

3. The friction welding temperature measurement structure according to claim 2, characterized in that The second jack (141) is a stepped hole with a narrow upper part and a wide lower part. A first insulating sleeve (142) adapted to the second jack (141) is installed in the second jack (141). A through hole (143) for the temperature-measuring metal part (200) to pass through is provided in the center of the first insulating sleeve (142).

4. The friction welding temperature measurement structure according to claim 2 or 3, characterized in that, Both the first jack (131) and the second jack (141) are provided with two for the two temperature-measuring metal parts (200) to pass through respectively, and a second insulating sleeve (132) is installed between the temperature-measuring metal part (200) and the inner wall of the corresponding first jack (131).

5. The friction welding temperature measurement structure according to claim 3, characterized in that, The first jack (131) is provided with one. A bundled insulating sleeve (133) is inserted into the first jack (131). The bundled insulating sleeve (133) is provided with two spaced-apart mounting holes (134). The temperature-measuring metal part (200) is partially inserted into the mounting holes (134).

6. The friction welding temperature measurement structure according to claim 5, wherein, The second jack (141) is provided with two spaced apart for the upper ends of the two temperature measuring metal parts (200) to pass through. The upper end of the welding head body (130) is provided with a sunken transition groove (135). The temperature measuring metal part (200) includes a contact part (210), a detection part (220) and an extension part (230). The contact part (210) passes through the through hole (143), and the upper end is used to contact the electrical connection seat (310). The detection part (220) passes through the mounting hole (134). The extension part (230) is located in the transition groove (135). The two ends of the extension part (230) are respectively connected to the contact part (210) and the detection part (220). The extension parts (230) on the two temperature measuring metal parts (200) gradually move away from each other from bottom to top. The extension part (230) is wrapped with an insulating wrapping structure (231), and the insulating wrapping structure (231) is embedded in the transition groove (135).

7. The friction welding temperature measurement structure according to claim 1, characterized in that The upper end of the temperature measuring metal part (200) protrudes from the welding head (100) to contact the electrical connection seat (310).

8. The friction welding temperature measurement structure according to claim 7, characterized in that, The electrical connection seat (310) includes an elastic piece (311) that can be elastically deformed vertically. The elastic piece (311) contacts the upper end of the temperature measuring metal part (200).

9. The friction welding temperature measurement structure according to claim 7, characterized in that, The electrical connection seat (310) has a concave arc groove, and the upper end of the temperature measuring metal part (200) has a contact head (240) adapted to the arc groove.

10. The friction welding temperature measurement structure according to claim 9, characterized in that, An elastic member (400) is provided at the upper end of the female seat (300) for applying an elastic force towards the temperature measuring metal part (200) to the female seat (300) and the electrical connection seat (310) during assembly.

Images