JP2018167791A - Vehicle panel structure and method for manufacture thereof - Google Patents

Abstract

To provide a vehicle panel structure having a double skin construction which can suppress occurrence of distortion due to joining.SOLUTION: A vehicle panel structure 11 in which butting portions 70 of a pair of double skin shape materials 12, which are configured from first and second face plates 31a, 31b facing each other and plural rib parts 32 positioned between the first and second face plates 31a, 31b, are combined to each other. In the butting portions 70, a hollow part S2 is formed by the first face plate 31b, the second face plate 31a and the rib part 32 of each of the pair of double skin shape materials 12. The first face plates 31b are fastened by a fastening member 42 along the butting portions 70, and the second face plates 31a are joined by a friction stir welded joint 40 along the butting parts 70.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle panel structure and a manufacturing method thereof.

  2. Description of the Related Art Conventionally, a method of forming a vehicle panel structure by joining a plurality of extruded hollow members (hereinafter referred to as double skin members) in which a pair of face plates are connected by a plurality of ribs is known. For example, in the vehicle panel structure described in Patent Document 1, joining of a plurality of double skin shapes is realized by friction stir welding one of the pair of face plates and the other.

JP 2006-19295 A

  In the friction stir welding, distortion occurs in the double skin shape material due to heat shrinkage due to heat input, and therefore a process for correcting the distortion is required. In particular, in a vehicle panel structure applied to a railway vehicle or the like, it is necessary to perform bonding along a relatively long bonding line in order to bond large-area double skin members. For this reason, it is considered that the problem of distortion of the double skin shape material after the friction stir welding occurs remarkably.

  An object of the present invention is to provide a vehicle panel structure having a double skin structure capable of suppressing the occurrence of distortion due to joining, and a method for manufacturing the same.

  A vehicle panel structure according to one aspect of the present invention includes a pair of double skin profiles formed of a first and second face plates facing each other and a plurality of rib portions located between the first and second face plates. It is a vehicle panel structure formed by joining the butted portions of each other, and in the butted portion, a hollow portion is formed by the first face plate, the second face plate, and the rib portion of each of the pair of double skin shape members, The first face plates are fastened by a fastening member along the abutting portion, and the second face plates are joined by a friction stir welding portion along the abutting portion.

  In this vehicle panel structure, the first face plates are fastened by the fastening member and the second face plates are joined by the friction stir joint at the abutting portions of the pair of double skin profiles. With such a configuration, heat input by friction stir welding acts only on one side of the vehicle panel structure, so that distortion of the double skin shape material after joining can be suppressed. Further, in this vehicle panel structure, a hollow portion is formed in the butted portion by the first face plate, the second face plate, and the rib portion. Therefore, the continuity of the cross-sectional structure in the vehicle panel structure is also maintained.

  In the butt portion, the end portion of the first face plate in one double skin shape member and the end portion of the first face plate in the other double skin shape member form an overlapping region overlapping each other in the thickness direction of the pair of double skin shape members. And the fastening member may fasten the first face plates together in the overlapping region. By adopting such a configuration, it is possible to achieve strong fastening with a simple manufacturing process for the pair of double skin profiles.

  The fastening member may be welded to the overlapping region. By adopting such a configuration, it is possible to achieve stronger fastening with a simple manufacturing process for the pair of double skin profiles.

  The rib portion of one double skin shape member forming the hollow portion may have a support surface that supports the end portion of the first face plate in the other double skin shape material in the thickness direction of the pair of double skin shape materials. Good. By adopting such a configuration, the support surface in the rib portion of one double skin shape receives a load applied to the first face plate in the other double skin shape. For this reason, it is prevented that the 1st face plate in the other double skin shape material deform | transforms due to the load added at the time of the fastening by a fastening member, for example. Therefore, the manufacturing efficiency is improved with a simple configuration.

  A column member disposed on the first face plate side of the pair of double skin profiles may further be provided, and the column member may be fastened to the first face plate by a fastening member at the abutting portion. By adopting such a configuration, the vehicle panel structure can realize the combined use of the double skin structure and the semi-monocoque structure with a simple manufacturing process.

  The plurality of rib portions may be arranged perpendicular to the first and second face plates. By employ | adopting such a structure, when processing a vehicle panel structure into a predetermined shape, it can cut | disconnect in the position of arbitrary hollow parts. Therefore, for example, it is not necessary to provide a dedicated rib portion at the mounting position of the opening frame, and the manufacturing cost can be reduced.

  The manufacturing method of the vehicle panel structure which concerns on 1 side of this invention is a pair of double comprised by the 1st and 2nd faceplate which mutually opposes, and the some rib part located between 1st and 2nd faceplate. A method for manufacturing a vehicle panel structure formed by joining a butted portion between skin profiles, wherein a pair of double skin profiles are butted together, and a first face plate, a second face plate of each of the pair of double skin shapes, and The abutting step of forming a hollow portion in the abutting portion by the rib portion, the fastening step of fastening the first face plates by a fastening member along the abutting portion, and the second face plates are joined by friction stir welding along the abutting portion. Joining process.

  In this method of manufacturing a vehicle panel structure, first face plates are fastened together by a fastening member along the abutting portion, and second face plates are joined together by a friction stir welding along the abutting portion. Therefore, since heat input by friction stir welding acts only on one side of the vehicle panel structure, distortion of the double skin shape material after joining can be suppressed. In this method of manufacturing a vehicle panel structure, a hollow portion is formed in the butted portion by the first face plate, the second face plate, and the rib portion. Therefore, the continuity of the cross-sectional structure in the manufactured vehicle panel structure is also maintained.

  After performing the fastening process, the joining process may be performed. In this case, after the first face plates of the pair of double skin shape members are fastened by the fastening member, the second face plates are joined by friction stir welding. For this reason, when performing friction stir welding, since the first face plate of one double skin shape member has already been fastened, positioning in friction stir welding is easy. Therefore, the vehicle panel structure having a double skin structure can be manufactured by a simple manufacturing process.

  In the butting step, the end portion of the first face plate in one double skin shape member and the end portion of the first face plate in the other double skin shape member overlap each other in the thickness direction of the pair of double skin shape members. In the fastening step, the fastening member may be welded to the overlapping region by rotating the fastening member at a high speed and penetrating the overlapping region. In this case, about a pair of double skin shape material, a firm fastening is realizable by a simple manufacturing process.

  In the fastening step, the column member may be fastened together with the first face plate of the pair of double skin shapes by the fastening member. In this case, the combination of the double skin structure and the semi-monocoque structure can be realized with a simple manufacturing process.

  In the joining process, using a rotating tool provided with a shoulder portion at the tip of the probe portion and a backing member facing the shoulder portion while the probe portion is inserted, the shoulder portion disposed inside the hollow portion and the outside of the hollow portion The probe portion inserted into the abutting portion may be scanned along the abutting portion in a state where the abutting portion is sandwiched between the backing member and the abutting member. In this case, since the shoulder portion contacts the surface in the hollow portion, a bead is formed on the surface. Since the backing member abuts on the outer surface of the hollow portion, no bead is formed on the surface. Thereby, it becomes possible to omit the process of grinding a bead. For this reason, the vehicle panel structure of a double skin structure can be manufactured with a simple manufacturing process.

  As the double skin shape material, a double skin shape material in which a plurality of rib portions are arranged perpendicular to the first and second face plates may be used. In this case, when the manufactured vehicle panel structure is processed into a predetermined shape, the vehicle panel structure can be cut at an arbitrary hollow portion. Therefore, for example, it is not necessary to provide a dedicated rib portion at the mounting position of the opening frame, and the manufacturing cost can be reduced.

  ADVANTAGE OF THE INVENTION According to this invention, the vehicle panel structure of a double skin structure which can suppress generation | occurrence | production of the distortion by joining is obtained.

It is a schematic perspective view which shows an example of the rail vehicle structure to which the vehicle panel structure which concerns on this embodiment is applied. It is a perspective view of the vehicle panel structure used as a side structure of the railway vehicle structure shown in FIG. It is a principal part expanded sectional view of FIG. It is a principal part expanded sectional view of the double skin shape material used for an example of the manufacturing process of a vehicle panel structure. It is a figure which shows an example of the manufacturing process of a vehicle panel structure. It is a figure which shows an example of the manufacturing process of a vehicle panel structure. It is a figure which shows an example of the manufacturing process of a vehicle panel structure.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description, the same reference numerals are used for the same elements or elements having the same function, and redundant description is omitted.

  FIG. 1 is a schematic perspective view showing an example of a railway vehicle structure having a vehicle panel structure. The railway vehicle structure 1 includes a floor structure 2, a side structure 3, a roof structure 4, and a wife structure 5. By joining these structures together, the railway vehicle structure 1 has a box shape having a space for accommodating passengers therein.

  The floor structure 2 is disposed at the bottom of the railway vehicle structure 1 as a structure constituting the floor of the vehicle. A pair of trolleys (not shown) that support the railway vehicle structure 1 are installed in the lower part of the floor structure 2. The side structure 3 and the wife structure 5 are erected so as to surround the left and right edges and the front and rear edges of the floor structure 2 as structures constituting the side part of the vehicle.

  The side structure 3 is provided with a plurality of door portions 6 at regular intervals for passengers to get on and off. Moreover, the window part 7 is each provided between the door parts 6 and 6 and the both ends of the side structure 3. As shown in FIG. The side structure 3 is constituted by a vehicle panel structure 11 (see FIG. 2) that forms each part such as a waist panel, a blowing panel, a curtain panel, and a door upper panel.

  The waist panel is a panel located between the window portion 7 and the floor structure 2, and the blowing panel is located between the door portion 6 and the window portion 7 and between the window portion 7 and the wife structure 5. It is a panel. The curtain panel is a panel located between the window portion 7 and the roof structure 4, and the door upper panel is a panel located between the door portion 6 and the roof structure 4.

  The wife structure 5 is provided with an entrance / exit 8 for passengers to go back and forth between vehicles. The roof structure 4 is arranged so as to cover the space above the structure of the railway vehicle as a structure constituting the roof portion of the vehicle. The roof structure 4 of the vehicle is provided with an air conditioner and a pantograph (not shown) for adjusting the temperature inside the vehicle at the upper part.

  Next, the vehicle panel structure 11 constituting the side structure 3 described above will be described in more detail.

  FIG. 2 is a perspective view of the vehicle panel structure used as the side structure 3 of the railway vehicle structure 1 shown in FIG. The vehicle panel structure 11 is constituted by a pair of double skin shapes 12 joined together, and has a double skin structure. The pair of joined double skin profiles 12 have principal surfaces 22a and 22b parallel to each other. The main surface 22 a constitutes the outer surface of the side structure 3, and the main surface 22 b constitutes the inner surface of the side structure 3. The vehicle panel structure 11 may be configured by combining three or more double skin shapes 12.

  In the present embodiment, the vehicle panel structure 11 also includes a column member 13 coupled to the main surface 22b (face plate 31b) of the pair of double skin shapes 12, and the double skin structure and the semi-monocoque structure are used in combination. ing. The column member 13 has a hat shape and includes a pair of flange portions 13a. The column member 13 is joined to the main surface 22b by spot welding at the welded portion 13b of the pair of flange portions 13a. The column member 13 extends in the height direction of the side structure 3 when applied to the railway vehicle structure 1.

  The column member 13 is made of, for example, a material having higher strength than the double skin shape member 12. Examples of the material of the column member 13 include a high-strength aluminum alloy such as 7N01. The column member 13 may be configured using the same material as the double skin shape member 12. The thickness of the column member 13 is about several millimeters, for example.

  Each double skin shape member 12 includes a pair of face plates 31 facing each other and a plurality of rib portions 32 that form a plurality of hollow portions S1 between the pair of face plates 31. Each double skin profile 12 has a thickness of 10 to 40 mm. Each double skin shape member 12 is a plate member made of an aluminum alloy such as 6N01, and is formed by, for example, extrusion molding. The pair of face plates 31 includes a face plate 31a located on the main surface 22a side and a face plate 31b located on the main surface 22b side. The face plate 31a and the face plate 31b are opposed to each other, and the thickness of each face plate 31a, 31b is, for example, about several millimeters.

  In each double skin profile 12, the plurality of rib portions 32 are disposed between the face plate 31 a and the face plate 31 b, the facing direction of the face plate 31 a and the face plate 31 b (the thickness direction of the double skin profile 12), and a pair of doubles. The skin shape member 12 extends parallel to the direction orthogonal to the abutting direction of the skin shape member 12. Therefore, the plurality of rib portions 32 extend parallel to the longitudinal direction of the railway vehicle structure 1. The thickness of each rib part 32 is about several millimeters, for example. The plurality of rib portions 32 are arranged in parallel at predetermined intervals in the abutting direction of the pair of double skin shape members 12. Each rib portion 32 has a planar shape connected to the face plate 31a and the face plate 31b, and is disposed perpendicular to the face plates 31a and 31b. Therefore, the hollow portion S1 formed by the plurality of rib portions 32 has a rectangular cross section.

  Also in the abutting portion 70 of the pair of double skin shapes 12, a hollow portion S2 is formed by the face plate 31a, the face plate 31b, and the rib portions 32A and 32B of the pair of double skin shapes 12 respectively. The rib portions 32A and 32B are included in the plurality of rib portions 32 described above. As with the hollow portion S1, the hollow portion S2 extends in parallel with the longitudinal direction of the railway vehicle structure 1 and has a rectangular cross section. Therefore, each rib part 32, hollow part S1, and hollow part S2 are extended in the direction orthogonal to the direction where the column member 13 is extended.

  As described above, in the vehicle panel structure 11, the pair of double skin shape members 12 are abutted with each other and joined at the abutting portion 70. Specifically, the face plates 31 a of the pair of double skin shape members 12 are joined by friction stir welding along the abutting portion 70, and the face plates 31 b of the pair of double skin shape members 12 are joined to the abutting portion 70. It is fastened by the fastening member 42 along.

  Friction stir welding is a solid-phase joining method in which a probe part is pushed into a material such as a metal material while rotating a rotary tool, and base materials softened by frictional heat are integrated by plastic flow. In friction stir welding, the heat input to the base metal is small compared to fusion welding such as arc welding and laser welding, so it is possible to obtain high-quality joints and suitable for joining aluminum alloys with low melting points. ing.

  The friction stir welding portion 40 in the vehicle panel structure 11 is a region where a joining mark due to the friction stir welding with respect to the butt portion 70 appears. The friction stir welding portion 40 is provided on the face plate 31a on the main surface 22a side, and each rib portion 32 that is in the longitudinal direction of the railway vehicle assembly 1 along the abutting portion 70 of the pair of double skin shape members 12. The hollow portion S1 and the hollow portion S2 extend in parallel to the extending direction.

  In the present embodiment, in the butting direction A of the pair of double skin shape members 12, the width of the hollow portion S2 is the same as the width of each hollow portion S1. The width of the hollow portion S2 may be larger than the width of each hollow portion S1. In this case, at the time of friction stir welding, it can be avoided that high scanning accuracy is required for the probe portion, and the friction stir welding in the hollow portion S2 can be facilitated.

  The fastening member 42 used in the present embodiment has a head portion and a screw portion similarly to a general screw, and the screw portion has a helical thread. In this embodiment, the fastening member 42 is welded to the target object by frictional heat by being rotated at a high speed and inserted into the target object. For this reason, the process of processing a general screw fastening tap can be omitted. Since the region where the frictional heat is generated is smaller than the friction stir welding using the rotary tool, the single double skin shape member 12 can be bonded in a small amount of heat input and in a short time. The fastening member 42 is a general screw and may be screwed to the object. In this case, the process of processing the tap increases.

  The fastening members 42 are provided at predetermined intervals in the direction in which the rib portions 32, the hollow portions S <b> 1, and the hollow portions S <b> 2 extend in the longitudinal direction of the railway vehicle structure 1. In the present embodiment, the pair of flange portions 13a of the column member 13 are fastened together with the face plate 31b by a part of the plurality of fastening members 42 provided at a predetermined interval.

  FIG. 3 is an enlarged cross-sectional view near the hollow portion S2. In addition, in FIG. 3, the form of the part which the column member 13 is not fastened together by the fastening member 20 is shown for the simplification of description. As described above, the friction stir welding portion 40 is provided at the abutting portion 70 between the face plates 31a of the pair of double skin shape members 12, and the fastening member is provided at the abutting portion 70 between the face plates 31b of the pair of double skin shape members 12. 42 is provided. The hollow portion S2 is located between the butted portion 70 on the main surface 22a side and the butted portion 70 on the main surface 22b side.

  In the butted portion 70, the end portion of the face plate 31b of the double skin shape member 12b and the end portion of the face plate 31b of the double skin shape member 12a have an overlapping region R that overlaps with each other in the thickness direction of the double skin shape member 12. . The end portion of the face plate 31b of the double skin shape member 12b has a surface included in the main surface 22b and extends to the double skin shape member 12a side. The end of the face plate 31b of the double skin shape member 12a extends toward the double skin shape member 12b in parallel with the main surface 22b at a position shifted to the face plate 31a side by the thickness of the face plate 31b. The face plate 31b in the double skin shape member 12a constitutes the surface 22d in the hollow portion S2, and the face plate 31b in the double skin shape member 12b constitutes the surface outside the hollow portion S2, that is, the main surface 22b.

  The rib portion 32A of the double skin shape member 12a that forms the hollow portion S2 has a planar shape that is connected to the face plate 31a and the face plate 31b in the same manner as the rib portion 32 of the other double skin shape member 12a. They are arranged perpendicular to 31a and 31b.

  The rib portion 32B of the double skin shape member 12b that forms the hollow portion S2 extends in a direction perpendicular to the face plate 31a from the face plate 31a, and on the hollow portion S1 side that the double skin shape member 12b forms near the face plate 31b. It bends at right angles and extends. Thereby, the support surface 32a which supports the edge part of the face plate 31b in the double skin shape material 12a in the thickness direction of the double skin shape material 12 is formed. The end portion of the face plate 31b in the double skin shape member 12a is sandwiched between the end portion of the face plate 31b in the double skin shape member 12b and the support surface 32a.

  The rib portion 32B extends from the end of the support surface 32a so as to be bent at a right angle toward the face plate 31b, and is connected to the face plate 31b. Thereby, the contact surface 32b which contact | abuts in the abutting direction of the edge part of the faceplate 31b in the double skin shape material 12a and a pair of double skin shape material 12 is formed.

  The friction stir welding part 40 has a bead 41 on the surface 22c in the hollow part S2. The surface outside the hollow portion S2 of the friction stir welding portion 40, that is, the main surface 22a is flat. The fastening member 42 penetrates the overlapping region R and fastens the face plates 31b of the double skin shape members 12a and 12b. In the present embodiment, the fastening member 42 is welded to the overlapping region R.

  Next, with reference to FIGS. 4-6, the manufacturing process of the vehicle panel structure 11 which concerns on this embodiment is demonstrated. FIG. 4 is an enlarged cross-sectional view of a main part of a double skin shape member used in an example of the manufacturing process of the vehicle panel structure 11. Each double skin shape member 12 has a plurality of rib portions 32 arranged perpendicular to the face plates 31a and 31b. A pair of face plates 31a and 31b of each double skin shape member 12 has an end face 45 that is abutted against the other double skin shape member 12 at the time of joining. The end surface 45 is a flat surface. The end surface 45 of one double skin shape member 12a and the end surface 45 of the other double skin shape member 12b may have an uneven shape that fits each other.

  In the manufacturing process of the vehicle panel structure 11, first, as shown in FIG. 5, the pair of face plates 31 of one double skin shape member 12a and the pair of face plates 31 of the other double skin shape member 12b are opposed to each other. Match in direction A. Thereby, the hollow portion S2 is formed in the butted portion 70 by the face plate 31a, the face plate 31b, and the rib portion 32 of each of the pair of double skin shape members 12. At this time, the end surfaces 45 of the face plates 31a of the pair of double skin shape members 12 come into contact with each other, and the end portions of the face plates 31b of the double skin shape members 12a come into contact with the contact surfaces 32b of the rib portions 32 of the double skin shape members 12b. . Thus, the boundary portion B of the end face 45 of the face plate 31a is formed, and the end portion of the face plate 31b of the double skin shape member 12a and the end portion of the face plate 31b of the double skin shape member 12b are connected to each other. The overlapping region R is formed so as to overlap each other in the thickness direction. The face plate 31b in the double skin shape member 12a constitutes the surface 22d in the hollow portion S2, and the face plate 31b in the double skin shape member 12b constitutes the surface outside the hollow portion S2, that is, the main surface 22b.

  Then, the fastening process which fastens a pair of double skin shape members 12 by welding the fastening member 42 with respect to the overlap area | region R is implemented. Specifically, with the thread of the fastening member 42 facing the main surface 22b and the fastening member 42 standing upright with respect to the main surface 22b, the fastening member 42 is rotated at a high speed to enter the overlapping region R of the face plate 31b. insert. By pressurizing the fastening member 42 in the insertion direction C, plastic flow is generated by frictional heat between the thread of the fastening member 42 and the face plate 31b. At this time, the end portion of the face plate 31b in the double skin shape member 12a is supported in a direction facing the insertion direction C by the support surface 32a of the rib portion 32 in the double skin shape member 12b. When the head of the fastening member 42 comes into contact with the main surface 22b and the fastening member 42 passes through the overlapping region R, the rotation of the fastening member 42 is stopped. Thereby, the fastening member 42 is welded to the overlapping region R.

  By performing the fastening process by the fastening member 42 a plurality of times along the abutting portion 70, the plurality of fastening members 42 are provided at predetermined intervals in the direction in which the hollow portion S2 extends. In the present embodiment, the flange portion 13a of the column member 13 arranged so as to extend in a direction orthogonal to the direction in which the plurality of rib portions 32 and the like extend by a part of the plurality of fastening members 42, The face plate 31b of the pair of double skin members 12 is fastened together. That is, the flange portion 13a of the column member 13 and the overlapping region R are fastened together. Thereafter, the column member 13 is spot-welded to the face plate 31b and joined to the main surface 22b at the welded portion 13b of the flange portion 13a.

  Next, a joining step of pushing the probe portion into the abutting portion 70 of the pair of double skin shape members 12 while rotating the rotary tool and joining the end portions of the face plates 31a along the abutting portion 70 by friction stir welding. carry out. In the friction stir welding, the butt portion 70 is joined by plastic flow caused by frictional heat generated between the rotary tool and the double skin profile 12. The friction stir welding is performed so that the boundary portion B is included in the friction stir welding portion 40. Friction stir welding may be performed such that the boundary portion B is included in the friction stir welding portion 40 by plastic flow.

  Specifically, friction stir welding is performed using the rotary tool 50 shown in FIGS. FIG. 6 is a perspective view showing a joining process by friction stir welding, and FIG. 7 is a cross-sectional view showing a joining process by friction stir welding. The rotating tool 50 is provided with a shoulder portion 52 at the tip of the probe portion 51, and a backing member 53 is provided on the proximal end side of the probe portion 51. The probe portion 51 is inserted through a through hole 53 a provided in the center of the backing member 53, and is rotatable with respect to the backing member 53. The backing member 53 faces the shoulder portion 52 in a state where the probe portion 51 is inserted.

  In the joining step, the probe portion 51 is inserted while rotating from the end surface side of the face plate 31a located in the direction in which each rib portion 32 and the hollow portion S2 extends into the abutting portion 70 described above. At this time, the shoulder portion 52 provided at the tip of the probe portion 51 is disposed in the hollow portion S2 of the pair of double skin members 12, and the backing member 53 is disposed outside the hollow portion S2. And the probe part 51 inserted in the abutting part 70 in the state which clamped the abutting part 70 with the shoulder part 52 and the backing member 53, and inclined the probe part 51 to the scanning direction D side with respect to the double skin shape material 12. Is scanned along the butted portion 70 while rotating. Specifically, the probe portion 51 is scanned in a state where the shoulder portion 52 is in contact with the surface 22c in the hollow portion S2 and the backing member 53 is in contact with the outer surface of the hollow portion S2, that is, the main surface 22a. To do.

  In the scanning of the probe unit 51, the shoulder unit 52 moves in the scanning direction D while rotating with respect to the pair of double skin profiles 12 together with the probe unit 51. The probe unit 51 moves in the scanning direction D without rotating. A bead 41 is formed on the surface 22 c in the hollow portion S <b> 2 by the contact of the probe portion 51. Since the backing member 53 that does not rotate contacts the main surface 22a, the main surface 22a is flat. After the joining step, the friction stir welding portion 40 may be polished by a grinder or the like on the main surface 22a side.

  As described above, in the vehicle panel structure 11, the face plates 31 b are fastened by the fastening member 42 and the face plates 31 a are joined by the friction stir joint 40 in the abutting portion 70 of the pair of double skin shape members 12. Yes. In the manufacturing method of the vehicle panel structure 11, the face plates 31 b are fastened together by the fastening member along the abutting portion 70, and the face plates 31 a are joined along the abutting portion 70 by friction stir welding. For this reason, since heat input by friction stir welding acts only on one side of the vehicle panel structure 11, distortion of the double skin profile 12 after joining can be suppressed. In the vehicle panel structure 11, a hollow portion S <b> 2 is formed in the butted portion 70 by the face plate 31 a, the face plate 31 b, and the rib portion 32. Therefore, the continuity of the cross-sectional structure in the vehicle panel structure 11 is also maintained.

  In the butted portion 70, the end portion of the face plate 31b in one double skin shape member 12a and the end portion of the face plate 31b in the other double skin shape member 12b overlap each other in the thickness direction of the pair of double skin shape members 12. It has a region R. The fastening member 42 fastens the face plates 31b in the overlapping region R. For this reason, about a pair of double skin shape material 12, a firm fastening is realizable by a simple manufacturing process.

  The fastening member 42 is welded to the overlapping region R. For this reason, about a pair of double skin shape material 12, a firm fastening can be implement | achieved by a simple manufacturing process.

  The rib portion 32 of one double skin shape member 12b forming the hollow portion S2 has a support surface 32a that supports the end portion of the face plate 31b in the other double skin shape member 12a in the thickness direction. For this reason, the support surface 32a in the rib part 32 of one double skin shape member 12b receives a load applied to the face plate 31b in the other double skin shape member 12a. Therefore, the face plate 31b in the other double skin shape member 12a is prevented from being deformed due to a load applied at the time of fastening by the fastening member 42, for example. Therefore, the manufacturing efficiency is improved with a simple configuration.

  A column member 13 disposed on the face plate 31b side of the pair of double skin members 12 is further provided, and the column member is fastened to the first face plate by a fastening member at the abutting portion 70. In the fastening process, the column member is fastened together with the first face plate of the pair of double skin shapes by the fastening member. For this reason, the vehicle panel structure 11 can implement | achieve combined use with a double skin structure and a semi-monocoque structure with a simple manufacturing process.

  The thickness of the pair of double skin shapes 12 is 10 to 40 mm. Since the thickness of the double skin shape member 12 is 40 mm or less, an inexpensive and lightweight structure can be realized. Since the thickness of the double skin shape member 12 is 10 mm or more, a structure with less distortion in the friction stir welding can be realized. Therefore, by installing the column member 13 to configure the semi-monocoque structure, it is possible to realize a structure that is inexpensive and lightweight and has high rigidity using both the double skin structure and the semi-monocoque structure with a simple manufacturing process.

  The plurality of rib portions 32 are arranged perpendicular to the pair of face plates 31a and 31b. For this reason, when processing a vehicle panel structure into a predetermined shape, it can cut | disconnect in the position of arbitrary hollow parts. Therefore, for example, it is not necessary to provide a dedicated rib portion at the mounting position of the opening frame, and the manufacturing cost can be reduced.

  After performing the fastening process by the fastening member 42, the joining process by friction stir welding is implemented. For this reason, after fastening the face plates 31b of the pair of double skin shape members 12 with the fastening member 42, the face plates 31a are joined together by friction stir welding. Therefore, when performing friction stir welding, since the face plate of one double skin shape member 12 is already fastened, positioning in the friction stir welding is easy. Therefore, the vehicle panel structure 11 having a double skin structure can be manufactured by a simple manufacturing process.

  In the butting step, the end portion of the face plate 31b in one double skin shape member 12a and the end portion of the face plate 31b in the other double skin shape member 12b overlap each other in the thickness direction of the pair of double skin shape members 12. Region R is formed. In the fastening step, the fastening member 42 is welded to the overlapping region R by rotating the fastening member 42 at a high speed and penetrating the overlapping region R. For this reason, about a pair of double skin shape material 12, a firm fastening is realizable by a simple manufacturing process.

  In the joining step, a rotating tool 50 provided with a shoulder portion 52 at the tip of the probe portion 51 and a backing member 53 facing the shoulder portion 52 in a state where the probe portion 51 is inserted are used. And the probe part 51 inserted in the abutting part 70 is made into the abutting part 70 in the state which clamped the abutting part 70 by the shoulder part 52 arrange | positioned in the hollow part S2, and the backing member 53 arrange | positioned on the outer side of the hollow part S2. Scan along. In this case, since the shoulder portion 52 abuts on the surface 22c in the hollow portion S2, a bead is formed on the surface 22c. Since the backing member 53 contacts the outer surface of the hollow portion S2, that is, the main surface 22a, no bead is formed on the main surface 22a. Thereby, it becomes possible to omit the process of grinding a bead. For this reason, the vehicle panel structure of a double skin structure can be manufactured with a simple manufacturing process.

  As mentioned above, although embodiment of this invention has been described, this invention is not necessarily limited to embodiment mentioned above, A various change is possible in the range which does not deviate from the summary.

  For example, the manufacturing process is not limited to the order shown in this embodiment. In this embodiment, after performing the fastening process by the fastening member 42, the joining process by friction stir welding was implemented, but you may implement a fastening process after implementing a joining process.

  DESCRIPTION OF SYMBOLS 11 ... Vehicle panel structure, 12, 12a, 12b ... Double skin profile, 13 ... Column member, 22a, 22b ... Main surface, 31, 31a, 31b ... Face plate, 32 ... Rib part, 32a ... Support surface, 40 ... Friction stir welding part, 42 ... fastening member, 50 ... rotating tool, 51 ... probe part, 52 ... shoulder part, 53 ... backing member, 70 ... butting part, R ... overlapping region, S2 ... hollow part.

Claims (12)

A vehicle panel structure formed by joining a pair of butted portions of a pair of double skin profiles formed by first and second face plates facing each other and a plurality of rib portions located between the first and second face plates. Body,
In the abutting portion, a hollow portion is formed by the first face plate, the second face plate, and the rib portion of each of the pair of double skin shape members,
The first face plates are fastened by a fastening member along the butted portion,
Said 2nd face plates are vehicle panel structures joined by the friction stir welding part along the said abutting part. In the butted portion, an end portion of the first face plate in one double skin shape member and an end portion of the first face plate in the other double skin shape member are mutually in the thickness direction of the pair of double skin shape members. Have overlapping areas,
The vehicle panel structure according to claim 1, wherein the fastening member fastens the first face plates to each other in the overlapping region.   The vehicle panel structure according to claim 2, wherein the fastening member is welded to the overlapping region.   The rib portion of one double skin shape member forming the hollow portion has a support surface for supporting the end portion of the first face plate in the other double skin shape material in the thickness direction of the pair of double skin shape materials. The vehicle panel structure according to any one of claims 1 to 3. A column member disposed on the first face plate side of the pair of double skin shapes;
The vehicle panel structure according to any one of claims 1 to 4, wherein the column member is fastened to the first face plate by the fastening member at the butted portion.   The vehicle panel structure according to any one of claims 1 to 5, wherein the plurality of rib portions are arranged perpendicular to the first and second face plates. A vehicle panel structure formed by joining a pair of butted portions of a pair of double skin profiles formed by first and second face plates facing each other and a plurality of rib portions located between the first and second face plates. A method for manufacturing a body,
Abutting step of abutting the pair of double skin shapes together, forming a hollow portion in the abutting portion by the first face plate, the second face plate, and the rib portion of each of the pair of double skin shapes;
A fastening step of fastening the first face plates together by a fastening member along the butted portion;
A joining step of joining the second face plates together by friction stir welding along the butted portion.   The manufacturing method of the vehicle panel structure according to claim 7, wherein the joining step is performed after the fastening step. In the butting step, an end portion of the first face plate in one double skin shape member and an end portion of the first face plate in the other double skin shape member are mutually connected in the thickness direction of the pair of double skin shape members. Overlapping to form an overlapping area,
The method of manufacturing a vehicle panel structure according to claim 7 or 8, wherein, in the fastening step, the fastening member is welded to the overlapping region by rotating the fastening member at a high speed and penetrating the overlapping region.   The method of manufacturing a vehicle panel structure according to any one of claims 7 to 9, wherein in the fastening step, the column member is fastened together with the first face plate of the pair of double skin shapes by the fastening member. In the joining step,
Using a rotating tool provided with a shoulder portion at the tip of the probe portion, and a backing member facing the shoulder portion in a state where the probe portion is inserted,
The probe portion inserted in the abutting portion is scanned along the abutting portion in a state where the abutting portion is sandwiched between the shoulder portion disposed in the hollow portion and the backing member disposed outside the hollow portion. The manufacturing method of the vehicle panel structure as described in any one of Claims 7-10.   The vehicle according to any one of claims 7 to 11, wherein a double skin profile in which the plurality of rib portions are arranged perpendicular to the first and second face plates is used as the double skin profile. A method for manufacturing a panel structure.

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