JP2016107302A - Method for manufacturing rotary electrical machine structure support, and rotary electrical machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a rotary electrical machine structure support capable of withstanding vibration and distortion while suppressing occurrence of defects and distortion.SOLUTION: The method for manufacturing a rotary electrical machine structure support according to an embodiment comprises an arranging step, a first joining step, and a second joining step. In the arranging step, a first joined member and a second joined member, which is an integrated member of plural plates by lamination, are arranged in their respective positions where the end portions of the two members come into contact with each other. In the first joining step, a rotatingly driven tool made to enter the boundary portion between the end portions of the first and second joined members brought into contact with each other from a first outer surface side of the boundary portion is made to slide along their interface. In the second joining step, the rotatingly driven tool made to enter the boundary portion from a second outer surface side of the boundary portion, positioned at a rear side of the first outer surface, is made to slide along their interface to thereby join the first and second jointed members with each other.SELECTED DRAWING: Figure 2

Description

  Embodiments described herein relate generally to a method of manufacturing a structural support for a rotating electrical machine and the rotating electrical machine.

  Rotors for rotating electrical machines used in hydroelectric power generation, etc., can be formed by laminating and integrating relatively hard solid members and multiple thin plates so that strain caused by internal stress caused by centrifugal force can be absorbed. The structural support body which joined the laminated body which has elasticity is provided.

  Such a structural support, for example, after joining the end portions of a plurality of thin plates by TIG (Tungsten Inert Gas) welding and laminating and integrating the groove shape into a K groove, etc., The grooved laminate and the solid member described above are further manufactured by TIG welding. In addition, copper or a copper alloy is used as a material for each member to be joined including a thin plate to be TIG welded.

JP 2005-118877 A Japanese Patent No. 2013-192439 Japanese Patent No. 5250123

  By the way, the structural support described above needs to have mechanical strength that can withstand vibrations and strains caused by centrifugal force. However, as described above, since the structural support material is made of a difficult-to-weld material such as copper or copper alloy as described above, defects are easily generated in the welded part, and the strength of the base material is reduced during welding. There is a concern that the range of the thermal influence of the sheet is widened, and further, deformation after welding, peeling of each thin plate, breakage, and the like.

  Therefore, the problem to be solved by the present invention is to provide a method of manufacturing a structural support for a rotating electrical machine and a rotating electrical machine that can secure mechanical strength that can withstand vibration and distortion while suppressing occurrence of defects, deformation, peeling, and breakage. It is to be.

  The manufacturing method of the structural support for a rotating electrical machine according to the embodiment includes an arranging step and first and second joining steps. In the arranging step, the first member to be joined and the second member to be joined, in which a plurality of plate members are laminated and integrated, are respectively arranged at positions where the end portions contact each other. In the first bonding step, the boundary portion between the first member to be bonded and the second member to be bonded, in which the end portions are brought into contact with each other, is penetrated from the first outer surface side of the boundary portion. A tool to be rotated is slid along the interface of the boundary portion. In the second joining step, the rotationally driven tool penetrated into the boundary portion from the second outer shape side of the boundary portion located on the back side of the first outer shape surface along the interface. By sliding, a structural support body for a rotating electrical machine in which the first and second members to be joined are joined to each other is obtained.

The figure which shows schematically the cross section of the rotary electric machine provided with the structure support body for rotary electric machines which concerns on 1st Embodiment. The perspective view which showed the manufacturing method of the structure support body for rotary electric machines of FIG. 1 from the 1st external surface side. The figure which showed the manufacturing method of the structure support body for rotary electric machines of FIG. 1 from the plane direction (upper surface direction). The perspective view which showed the manufacturing method of the structure support body for rotary electric machines of FIG. 1 from the 2nd external surface side. The perspective view which showed what changed the manufacturing process partially from the manufacturing method of the structure support body for rotary electric machines of FIG. The perspective view which showed what changed the manufacturing process partially from the manufacturing method of the structure support body for rotary electric machines of FIG.2 and FIG.5. The perspective view which showed the manufacturing method of the structure support body for rotary electric machines which concerns on 2nd Embodiment from the 1st external surface side. The perspective view which showed what changed the manufacturing process partially from the manufacturing method of the structure support body for rotary electric machines of FIG. The perspective view which showed the manufacturing method of the structure support body for rotary electric machines which concerns on 3rd Embodiment from the 1st external surface side. The perspective view which showed what changed the manufacturing process partially from the manufacturing method of the structure support body for rotary electric machines of FIG. The perspective view which showed what changed the manufacturing process partially from the manufacturing method of the structure support body for rotary electric machines of FIG.9 and FIG.10. The figure which showed the manufacturing method of the structure support body for rotary electric machines of FIG. 11 from the plane direction (upper surface direction). The perspective view which showed what changed the manufacturing process partially from the manufacturing method of the structure support body for rotary electric machines of FIGS. The perspective view which showed what changed the manufacturing process partially from the manufacturing method of the structure support body for rotary electric machines of FIGS. 9-11 and FIG.

Hereinafter, embodiments will be described with reference to the drawings.
<First Embodiment>
FIG. 1 shows a rotating electrical machine 10 including a rotating electrical machine structure support 17 manufactured by the method for manufacturing a rotating electrical machine structure support of the present embodiment. As shown in FIG. 1, the rotating electrical machine 10 is, for example, a variable speed rotating electrical machine, and more specifically, for example, a variable speed generator motor used in pumped-storage power generation.

  The rotating electrical machine 10 includes a stator (stator) 3, a rotor (rotor) 5, and the like. Further, the rotating electrical machine 10 has a cooling mechanism provided with, for example, a fan 15 and a ventilation duct provided symmetrically at both ends of the rotating shaft 9 of the rotor 5. The rotating shaft 9 is supported by a structural portion including the stator 3 via a bearing mechanism. The stator 3 includes a stator coil 12 and a stator core 14. On the other hand, the rotor 5 includes a rotor core 8 and a rotor coil 7 that are provided integrally with the rotation shaft 9.

  Here, in the operation accompanied by the speed change of the rotating electrical machine (variable speed generator motor) 10, in order to allow the rotor 5 to absorb the distortion and vibration caused by the internal stress caused by the centrifugal force, FIG. As shown, the structure support 17 for a rotating electrical machine described above is provided. That is, as shown in FIG. 2 to be described later, the rotating electrical machine structure support 17 includes a first solid member 32 having a rectangular parallelepiped solid structure and a plurality of plate members (thin plates) 20a laminated and integrated. The second to-be-joined member 31 that is a laminated body having a flexible structure is joined to each other. The second member to be joined (laminated body) 31 is configured to have a thickness of, for example, 20 mm by laminating and integrating a plurality of plate members 20a having a thickness of, for example, 0.25 mm.

  As shown in FIG. 1, such a structural support 17 for a rotating electrical machine is appropriately disposed at a location where internal stress tends to concentrate, for example, when centrifugal force acts on the rotor 5. As shown in FIG. 2, copper or a copper alloy is applied to the material of the first and second members to be joined 32 and 31 constituting the structural support 17 for a rotating electrical machine. In addition, the 1st and 2nd to-be-joined members 32 and 31 can also be comprised using aluminum and aluminum alloy as a material. Further, even when a material having higher mechanical strength (for example, longitudinal elastic modulus) is applied to the second bonded member 31 that is a laminated body than the first bonded member 32 having a solid structure. Good.

  Next, the manufacturing method of the structural support body for a rotating electrical machine according to the present embodiment that suitably realizes the joining of the first joined member 32 and the second joined member 31 will be described mainly based on FIGS. To do. The manufacturing method of the structural support for a rotating electrical machine according to the present embodiment includes an arrangement step, a first joining step, and a second joining step. First, in an arrangement | positioning process, as shown in FIG.2, FIG.3, the 1st to-be-joined member 32 and the 2nd to-be-joined member 31 are each arrange | positioned in the position where mutual edge part 32a, 31a contacts. . More specifically, the first member to be joined 32 and the second member to be joined 31 are fixed on a predetermined processing board via, for example, a dedicated jig.

  Here, the groove shape of the first bonded member 32 and the second bonded member 31 to be bonded is a so-called I groove (I-shaped groove). That is, the entire end surfaces of the first member to be bonded 32 and the second member to be bonded 31 that are in direct contact with each other in the arranging step (opposing surfaces of the end portions 32a and 31a) are both formed as flat surfaces. ing.

  Next, in the first joining step, as shown in FIGS. 2 and 3, the boundary portion 25 between the first joined member 32 and the second joined member 31 in which the end portions 32 a and 31 a are in contact with each other. Then, the tool 30 that is rotationally driven in the direction of arrow S1 that is penetrated from the first outer surface F1 side of the boundary portion 25 is slid (moved) in the direction of arrow B1 along the interface 25a of the boundary portion 25.

  The tool 30 is a stepped substantially columnar joining tool (joining tool) having a large-diameter shoulder portion 30a and a small-diameter protrusion 30b provided on the tip end side of the shoulder portion 30a. The tool 30 is movable in three axis directions and rotates (rotates and drives) around its own axis as a rotation center. The protrusion 30b is a penetrating portion that penetrates directly into the boundary portion 25 (bonded portions 30c and 30d). The protruding length of the protrusion 30b is appropriately set according to the thickness of the boundary portion 25 in the penetrating direction.

  The operation of the tool 30 is such that the rotational speed in the direction of the arrow S1 is, for example, 500 to 1500 rpm, the moving speed in the direction of the arrow B1 is, for example, 17-30 cm / min, and the load that the protrusion 30b penetrates into the boundary portion 25 is, for example, 3000. It is adjusted to be ˜5000 kgf.

  Here, in the first joining step, as shown in FIGS. 2 and 3, the boundary portion 25 (joined portion 30 c) through which the tool 30 that rotates while sliding (projecting portion 30 b) penetrates is caused by frictional heat. Is generated and softened, and plastic flow occurs, and the base material is kneaded and then cured. As a result, first, the first outer surface F1 side (bonded portion 30c) in the boundary portion 25 is subjected to friction stir welding (FSW: Friction Stir Welding).

  Next, in the second joining step, as shown in FIG. 4, the first outer surface of the first joined member 32 and the second joined member 31 in which the joined portion 30 c is friction stir joined. It is turned over so that the second outer surface F2 side located on the back side of F1 becomes the upper surface, and fixed on the processing board via the jig described above. Further, in the second joining step, as shown in FIG. 4, rotation is driven in the direction of the arrow S1 penetrating from the second outer surface F2 side of the boundary portion 25 into the boundary portion 25 (joined portion 30d). The tool 30 is slid (moved) along the interface 25a in the direction of the arrow B1 to obtain the rotating electrical machine structural support body 17 in which the first and second members to be joined 32 and 31 are joined to each other. Note that the operating conditions such as the rotational speed, moving speed, and load in the tool 30 are adjusted as described above. That is, in the second joining step, as shown in FIG. 4, the second outer surface F2 side (joined portion 30d) in the boundary portion 25 is friction stir welded.

  Therefore, in the method for manufacturing a rotating electrical machine structural support according to the present embodiment, the first outer surface F1 side and the second outer surface F2 side are divided into two passes (twice), and the first bonded object is obtained. Since the member 32 and the second member to be joined 31 are friction stir welded, it is possible to narrow the thermal influence range (softening region) in which the boundary portion 25 (base material) is thermally affected by friction stir. Become.

  That is, for example, when the boundary portion 25 is friction stir welded in one pass, in order to friction stir the entire thickness direction of the boundary portion 25 at once, a tool whose size is increased in consideration of rigidity, for example, is applied. As a result, the thermal influence range is widened. On the other hand, in the manufacturing method of the present embodiment in which the boundary portion 25 is friction stir welded in two passes, a reasonably small size tool is applied in two portions, resulting in a narrow thermal influence range. It becomes possible.

  Thereby, according to the manufacturing method of the structural support body for a rotating electrical machine of the present embodiment, it is possible to suppress a decrease in strength due to the thermal influence in the boundary portion 25 (base material) and to secure a desired mechanical strength. it can. Further, in the manufacturing method of the present embodiment, the first member 32 and the second member 31 made of copper or copper alloy, which are difficult-to-weld materials, are used without using a welding technique such as TIG welding (difficulty Since they are joined to each other (using friction stir welding without melting phenomenon, which is a process suitable for joining welding materials), it becomes possible to suppress the occurrence of defects and deformations at the joints. Furthermore, according to the manufacturing method of the present embodiment, for example, it is not necessary to process a groove shape of a joint portion required for welding or to give preheating, and the manufacturing cost can be reduced.

  Further, according to the rotating electrical machine 10 provided with the rotor 5 having the structure support 17 for the rotating electrical machine manufactured as described above, vibration and distortion generated in the rotor 5 due to centrifugal force during operation accompanied by a speed change. It can be absorbed effectively.

  Here, as shown in FIG. 5, the manufacturing method of the rotating electrical machine structure support of the present embodiment has, for example, the first or second member 32 to be joined on the moving path for sliding the tool 30 to be rotated, It is also possible to carry out while supplying the same material as the 31 materials. Specifically, as shown in FIG. 5, copper or copper alloy powder 34 is supplied from a powder supply device 33 during friction stir welding from the first and second outer surface sides. Thereby, the dent of each surface (each upper surface) of the 1st and 2nd to-be-joined members 32 and 31 produced by sliding with the end face of the shoulder part 30a of the tool 30 can be repaired in the process of friction stir welding. it can.

  Moreover, the manufacturing method of the structure support body for rotary electric machines of this embodiment performs the arrangement | positioning process mentioned above, and the 1st and 2nd joining process, as shown in FIG. It is also possible to join the one end portions 32a and 35a of the pair of second members to be joined 32 and 35 to the both end portions 31a and 31b, respectively.

<Second Embodiment>
Next, a second embodiment will be described with reference to FIGS. 7 and 8, the same components as those in the first embodiment shown in FIG. 2 and the like are given the same reference numerals, and redundant description is omitted.

  In the method for manufacturing a structural support for a rotating electrical machine according to the present embodiment, the first and second joining steps are performed while cooling at least the boundary portion 25 between the first joined member 32 and the second joined member 31. To implement. The cooling in this case is realized, for example, by bringing the cooling member through which the refrigerant passes through the first and second members to be joined 32 and 31 into contact with each other.

  Specifically, as shown in FIG. 7, for example, a processing board 38 made of copper or copper alloy for fixing the first and second members to be joined 32 and 31 described in the first embodiment is used for cooling. Apply as a member. Further, a coolant flow path 39 for flowing cooling water or the like is formed in the processing board 38.

  Instead, as shown in FIG. 8, a shield gas supply device 51 for supplying an inert gas such as argon gas or helium gas as the shield gas 52 is prepared, and the first and second bonding steps are performed. In doing so, the boundary gas 25 may be cooled by supplying the shielding gas 52 from the first or second outer surface F1, F2 side to the boundary portion 25.

  Therefore, according to the method for manufacturing a rotating electrical machine structural support according to the second embodiment, heat generated at the time of friction stir welding can be suppressed, so that the strength of the boundary portion 25 (joined portion) due to the thermal influence is increased. The decrease can be suppressed, and thereby desired rigidity can be secured in the boundary portion 25 where the first member 32 and the second member 31 are joined.

<Third Embodiment>
Next, a third embodiment will be described with reference to FIGS. 9 to 14, the same components as those in the first embodiment shown in FIGS. 2, 4, and the like are assigned the same reference numerals and redundant description is omitted.

  As shown in FIG. 9, in the manufacturing method of the rotating electrical machine structure support of the present embodiment, first, in the arranging step, the first member 32 and the second member 31 in which the ends are brought into contact with each other. Is paired so as to be sandwiched in the directions of arrows P1 and P2 from the third and fourth outer surfaces F3 and F4 located on the side surfaces of the first and second outer surfaces F1 and F2, respectively. The clamping members 53 and 54 are further arranged. The pair of clamping members 53 and 54 is made of, for example, copper or a copper alloy.

  Further, in the first and second joining steps, as shown in FIG. 9, the rotationally driven tool 30 penetrating from the first or second outer surface F1 or F2 side into one of the holding members 53 is moved to the boundary portion. It is slid (moved) onto the other holding member 54 along the interface.

  According to this manufacturing method, in addition to being able to suppress the fact that the joining mark at the time of friction stir welding by the protrusion (penetrating part) 30b of the tool 30 remains on the surface (upper surface) of the boundary portion 25, etc., It is possible to prevent the plate material 20a from separating from the member 31 main body. In addition, after joining the boundary part 25, you may remove a pair of joined clamping members 53 and 54 from the 1st and 2nd to-be-joined members 32 and 31 side.

  Moreover, the manufacturing method of the structure support body for rotary electric machines shown in FIG. 10 is also applicable. That is, in the arrangement step, as shown in FIG. 10, the first or second boundary portion 25 between the first member 32 and the second member 31 in which the end portions 32a and 31a are in contact with each other. A protective member 55 is further arranged on the outer surfaces F1 and F2.

  The protection member 55 is a rectangular thin plate made of copper or copper alloy and having a thickness of 0.5 to 2 mm or more. The protective member 55 has its longitudinal direction aligned with the sliding direction (arrow B1 direction) of the tool 30 so as to cover the boundary portion 25 (the boundary line on the first or second outer surface F1, F2). And is fixed at this position via a jig or the like. Further, the length of the protective member 55 in the short direction is configured to be equal to or longer than the diameter of the shoulder portion 30 a of the tool 30. Furthermore, the thickness of the protection member 55 is configured to be equal to or greater than a dent that may be generated by sliding with the end surface of the shoulder portion 30a of the tool 30 during friction stir welding.

  After the protective member 55 is arranged, in the first and second joining steps, the first and second outer faces F1 and F2 are driven to rotate through the protective member 55 and into the boundary portion 25. The tool 30 is slid (moved) along the interface 25a. According to such a manufacturing method, it is possible to compensate for the dent caused by the sliding of the tool 30 with the shoulder portion 30a with the thickness of the protective member 55, and to ensure the bonding strength of the boundary portion 25 (bonded portion). be able to. Further, buckling or the like can be suppressed from occurring in the second member to be bonded (laminated body) 31.

  Moreover, it is also possible to apply the manufacturing method of the structure support body for rotary electric machines shown in FIG. That is, as shown in FIG. 11, in the arrangement step, the boundary portion 25 between the first member 32 and the second member 31 in which the end portions 32a and 31a are in contact with each other is defined as the first and second members. A pair of sandwiching members 53 and 54 are disposed so as to be sandwiched from the third and fourth exterior surfaces F3 and F4 located on the side surfaces of the respective exterior surfaces F1 and F2, and the pair of sandwiching members 53 and 54 A protective member 61 is further disposed on the first or second outer surface F1 or F2 of the boundary portion 25 between the upper and first bonded members 32 and 31.

  Further, in the first and second joining steps, the rotationally driven tool 30 penetrating from the first or second outer surface F1, F2 side through the protective member 61 to the one clamping member 53 side is separated from the boundary portion. 25 is slid (moved) along the interface 25 to the other clamping member 54 side.

  According to the method for manufacturing a structure support for a rotating electrical machine shown in FIG. 11, it is possible to prevent the joining trace due to the protrusion (penetrating portion) 30 b of the tool 30 from remaining on the boundary portion 25. It is possible to prevent the plate member 20a from being dispersed from the member 31 to be joined, and to suppress the occurrence of a dent caused by the sliding of the tool 30 with the shoulder portion 30a. Furthermore, it is possible to suppress the occurrence of buckling or the like in the second member to be joined (laminated body) 31.

  Here, in the placement step, as shown in FIG. 11, the pair of sandwiching members 53 and 54 and the protection member 61, which are respectively placed, are joined using friction stir welding as shown in FIG. May be integrated). In this case, workability at the time of setting a pair of clamping members 53 and 54 and protection member 61 can be improved.

  Moreover, it can replace with such a manufacturing method and can also apply the manufacturing method of the structure support body for rotary electric machines shown in FIG. That is, in the arranging step, as shown in FIG. 13, the joining auxiliary member 56 having a U-shaped cross section is arranged. This joining auxiliary member 56 has a pair of sandwiching portions 56b and 56c having the functions of the pair of sandwiching members 53 and 54 shown in FIGS. 9 and 11, and the functions of the protection members 55 and 61 shown in FIGS. And a protective part 56a.

  As shown in FIG. 13, the pair of sandwiching portions 56b and 56c has a boundary portion 25 between the first member to be joined 32 and the second member to be joined 31 in which the end portions 31a and 32a are in contact with each other. And the third and fourth outer surfaces F3 and F4 located on the side surfaces of the second outer surfaces F1 and F2, respectively. On the other hand, the protection part 56a is placed on the first or second outer surface F1, F2 of the boundary portion 25. That is, the joining auxiliary member 56 has a structure in which the pair of clamping members 53 and 54 shown in FIGS. 9 and 11 and the protective member 55 (or 61) shown in FIGS. 10 and 11 are integrated.

  After such a joining auxiliary member 56 is arranged, at least when the first joining step is performed, the rotational drive is made to penetrate from the first outer surface F1 side into one clamping portion 56b of the joining auxiliary member 56. The tool 30 to be moved is sequentially slid (moved) along the interface 25a of the boundary portion 25 onto the protection portion 56a and onto the other clamping portion 56c. In the case of performing the second joining step, for example, the protective member 55 shown in FIG. 10 is disposed on the second outer surface F2, and then the friction stir welding using the tool 30 is performed. Good.

  As described above, according to the method of manufacturing the rotating electrical machine structure support shown in FIG. 13, it is possible to prevent the joining traces due to the protrusions (penetrating portions) 30 b of the tool 30 from remaining on the boundary portion 25. In addition, the dispersion of the plate material 20a from the second member to be joined 31 can be prevented, and the occurrence of a dent caused by the sliding of the tool 30 with the shoulder portion 30a can be suppressed. Further, it is possible to suppress the occurrence of buckling or the like in the second bonded member 31. Furthermore, according to the method for manufacturing the structural support for a rotating electrical machine shown in FIG. 13, the joining assisting member 56 is set by using the joining assisting member 56 in which the protection part and the pair of sandwiching parts are integrated. The workability at the time can be improved.

  Furthermore, instead of such a manufacturing method, it is also possible to apply a method for manufacturing a rotating electrical machine structural support shown in FIG. That is, as shown in FIG. 14, a first member to be joined 72 is prepared in place of the first member to be joined 32. The end portion 72c of the first member to be bonded 72 has a U-shaped cross section, and the end portion 31a of the second member to be bonded 31 is viewed from the first and second outer surfaces F1 and F2 side. It has a pair of 2nd clamping parts 72a and 72b for clamping.

  Further, in the arranging step, as shown in FIG. 14, the first end portion of the second member to be joined 31 is sandwiched between the pair of second sandwiching portions 72 a and 72 b in the first member to be joined 72. And the 2nd to-be-joined members 72 and 31 are arrange | positioned, respectively. Further, as shown in FIG. 14, in the first and second joining steps, the rotational drive is made to penetrate from the first or second outer surface F1 or F2 side to one second holding portion 72a (or 72b). The tool 30 to be slid is slid (moved) on the one second holding portion 72a (or 72b).

  Therefore, according to this manufacturing method, it can suppress that the board | plate material 20a disperses from the 2nd to-be-joined member 31, and generation | occurrence | production of the dent resulting from sliding with the shoulder part 30a of the tool 30 can be suppressed. . Furthermore, it is possible to suppress the occurrence of buckling or the like in the second member to be joined (laminated body) 31.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 7 ... Rotor coil, 10 ... Rotary electric machine, 20a ... Plate material, 25 ... Boundary part, 25a ... Interface, 30 ... Tool, 30a ... Shoulder part, 30b ... Projection part, 30c, 30d ... Joined part, 30e ... Joining location , 31 ... second joined member, 31a ... end of second joined member, 32, 72 ... first joined member, 32a, 72c ... end of first joined member, 39 ... refrigerant , 33 ... powder supply device, 34 ... powder, 38 ... processing board, 51 ... shield gas supply device, 52 ... shield gas, 53, 54 ... clamping member, 55, 61 ... protective member, 56 ... joining auxiliary member , 56a ... protection part, 56b, 56c ... clamping part, 72a, 72b ... second clamping part, F1 ... first outer surface, F2 ... second outer surface, F3 ... third outer surface, F4 ... first 4 external surface.

Claims (15)

An arrangement step of arranging the first member to be joined and the second member to be joined, in which the plurality of plate members are laminated and integrated, at positions where the end portions contact each other;
A rotationally driven tool that penetrates from the first outer surface side of the boundary portion into the boundary portion between the first member to be bonded and the second member to be bonded that are in contact with each other, A first joining step for sliding along the interface of the boundary portion;
By sliding the rotationally driven tool penetrating into the boundary portion from the second outer surface side of the boundary portion located on the back side of the first outer surface along the interface, the first portion A second joining step of obtaining a rotating electrical machine structural support in which the first and second members to be joined are joined together;
The manufacturing method of the structure support body for rotary electric machines which has this. The first and second joining steps are performed while supplying the same material as the material of the first or second member to be joined on a moving path for sliding the rotationally driven tool.
The manufacturing method of the structure support body for rotary electric machines of Claim 1. By carrying out the arranging step and the first and second joining steps, one end of the pair of first joined members is joined to both ends of the second joined member, respectively.
The manufacturing method of the structure support body for rotary electric machines of Claim 1 or 2. The first and second joining steps are performed while cooling at least the boundary portion between the first joined member and the second joined member.
The manufacturing method of the structure support body for rotary electric machines of any one of Claim 1 thru | or 3. Cooling of the boundary portion is performed by supplying a shielding gas or bringing a cooling member through which a refrigerant passes through the first and second members to be joined into contact with each other.
The manufacturing method of the structure support body for rotary electric machines of Claim 4. The entire end surfaces of the first and second members to be directly contacted in the arrangement step are each formed as a flat surface.
The manufacturing method of the structure support body for rotary electric machines of Claim 1. In the arrangement step, a boundary portion between the first member to be joined and the second member to be joined, in which the ends are brought into contact with each other, is positioned on a side surface side of each of the first and second outer surfaces. A pair of clamping members are further arranged so as to be clamped from the third and fourth outer surface sides,
In the first and second joining steps, the tool to be driven to rotate, which is inserted into one of the clamping members from the first or second outer surface side, is clamped along the interface of the boundary portion. Slide onto the part,
The manufacturing method of the structure support body for rotary electric machines of any one of Claim 1 thru | or 6. In the arranging step, a protective member is further arranged on the first or second outer surface of the boundary portion between the first member to be joined and the second member to be joined, which are brought into contact with each other. ,
In the first and second joining steps, the rotationally driven tool that has penetrated the boundary portion through the protective member from the first or second outer surface side is slid along the interface.
The manufacturing method of the structure support body for rotary electric machines of any one of Claim 1 thru | or 6. In the arrangement step, a boundary portion between the first member to be joined and the second member to be joined, in which the ends are brought into contact with each other, is positioned on a side surface side of each of the first and second outer surfaces. A pair of clamping members are arranged so as to be clamped from the third and fourth outer surface sides, and a boundary portion on the pair of clamping members and between the first and second bonded members. A protective member is further arranged on the first or second outer surface of
In the first and second joining steps, the rotationally driven tool penetrated from the first or second outer surface side to the one clamping member side through the protective member is connected to the interface of the boundary portion. Slid along the other clamping member side,
The manufacturing method of the structure support body for rotary electric machines of any one of Claim 1 thru | or 6. In the arrangement step, the pair of sandwiching members and the protection member that are arranged are integrated using friction stir welding,
The manufacturing method of the structure support body for rotary electric machines of Claim 9. In the arrangement step, a boundary portion between the first member to be joined and the second member to be joined, in which the ends are brought into contact with each other, is positioned on a side surface side of each of the first and second outer surfaces. A joining auxiliary member further comprising: a pair of clamping parts that are clamped from the third and fourth outer surface sides; and a protection part that is placed on the first or second outer surface of the boundary portion. And
At least in the first joining step, the protector is provided along the interface of the boundary portion with the rotationally driven tool penetrating from the first outer surface side into one of the clamping parts of the joining auxiliary member. Slide sequentially on the upper and other clamping parts,
The manufacturing method of the structure support body for rotary electric machines of any one of Claim 1 thru | or 6. The end portion of the first member to be bonded has a pair of second holding portions for holding the end portion of the second member to be bonded from the first and second outer surface sides. ,
In the arranging step, the first and second members to be joined are respectively sandwiched between the pair of second sandwiching portions of the first member to be joined so as to sandwich the end portions of the second member to be joined. Place and
In the first and second joining steps, the rotationally driven tool penetrated from the first or second outer surface side into one of the second clamping parts is placed on the one second clamping part. Slide with
The manufacturing method of the structure support body for rotary electric machines of any one of Claim 1 thru | or 5. The material of the first and second members to be joined is copper or a copper alloy.
The manufacturing method of the structure support body for rotary electric machines of any one of Claim 1 thru | or 12. The structural support for a rotating electrical machine to be manufactured is disposed on the rotor side of the rotating electrical machine,
The manufacturing method of the structure support body for rotary electric machines of any one of Claims 1 thru | or 13.   A rotating electrical machine comprising the structural support for a rotating electrical machine manufactured by the method for manufacturing a rotor coil according to any one of claims 1 to 14.

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