JPH0645340B2 - Vehicle structure block manufacturing method and structure structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vehicle body structure block manufacturing method and a vehicle body structure structure, and more particularly to a vehicle body structure block manufacturing method and vehicle suitable for a vehicle body made of an extruded mold material. It relates to the structure of the structure.

[Conventional technology]

A conventional method of manufacturing a structural block of a vehicle made of steel material is to set a thin plate in which openings such as side windows are preliminarily formed on a jig, and directly and vertically skeletal members on the thin plate outer plate. And the thin outer plate was joined to the bone members in the vertical and horizontal directions. Note that, as a related manufacturing method of this kind, for example, Japanese Patent Publication No. 63-12027 is cited.

On the other hand, in a vehicle structure composed of a light alloy extruded mold member, a frame is integrally formed on the mold member itself, so that the mold members are arranged at respective portions in the vehicle longitudinal direction or circumferential direction and joined to each other. It was. Note that, as a structure related to this kind, for example, "Light Metal Vehicle Commission Report No.3 1974-52", published on September 15, 1978, Japan Railway Vehicle Industry Association, p. 70 or Page 72 etc. are mentioned.

[Problems to be Solved by the Invention]

In the case of a steel vehicle structure among the above-mentioned conventional techniques, distortion is likely to occur on the surface of the thin outer plate, and it is necessary to perform the strain removal work after the vehicle structure is completed. Therefore, it is very necessary to remove the strain. Required a lot of time and effort. Further, in order to prevent the strain from occurring during the production of the vehicle body structure, it is possible to join the thin outer plate with the bone member under tension, but a device for applying tension is required, and It can be considered that a lot of man-hours are required to install the thin outer plate.

On the other hand, in the structure composed of extrusion mold material,
There is a problem that the joining of the extruded mold materials becomes complicated and the work cannot be automated. In particular, the conventional light alloy extruded mold material has a structure in which the joint portions of the extruded mold materials are overlapped with each other, and welding work for joining is required on both sides of the extruded mold material, which requires a great deal of time and labor. It was

Further, in order to prevent distortion on the surface of the vehicle body structure, it is conceivable to increase the plate thickness of the extruded mold member itself, but there is a problem that the weight of the entire vehicle body structure increases even though it is made of light alloy.

An object of the present invention is to make it possible to easily and inexpensively manufacture a vehicle body structure with less distortion.

[Means for Solving the Problems]

SUMMARY OF THE INVENTION The present invention is a method of making a roof of a vehicle, a longitudinal end dam of the vehicle, and at least one body block on a side along the longitudinal direction of the vehicle having ribs formed along the longitudinal direction. A plurality of extruded mold members are arranged in the jig along the width direction of the extruded mold members, and then the ends of the plurality of extruded mold members are butt-welded together, and then the plurality of extruded mold members are formed. Arranging a bone member approximately equal to the width dimension of the block in the rib of the plurality of extruded mold members in a direction intersecting the longitudinal direction of the rib, and then welding the bone member and the rib. , Is characterized.

[Action]

A plurality of extruded mold members are arranged on a jig, the plurality of extruded mold members are butt-welded together, and then the rib members and the bone members of the extruded mold members are arranged and viewed with respect to the plurality of extruded mold members. Weld and join. Therefore, since the plurality of extruded die members are joined to the bone member substantially equal to the width dimension of the block, the extruded die members can be joined to the bone member while maintaining the dimensional accuracy of the surfaces of the plurality of extruded die members, It is possible to easily manufacture a vehicle structure with little distortion.
In other words, compared with the method of joining extruded shape members by lap welding and reversing each block and welding the bone member to the inner surface, it is possible to prevent deformation and manufacture an accurate block, so a vehicle structure with less distortion is easy It can be manufactured at low cost.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In the figure, reference numeral 1 is a jig having a member supporting surface that matches the outer surfaces of the side structure and the roof structure. That is, the member supporting surface supports the outer plate member constituting the surfaces of the side structure and the roof structure, and the cross-sectional shape in the width direction thereof has a shape corresponding to the surface shape of the completed vehicle structure. Two
Reference numerals 3, 4 and 5 denote outer plate members constituting a side structure, which are arranged so as to be drawn through in the longitudinal direction of the vehicle body, and are made of a light alloy extruded shape member integrally formed with a rib 13 extending in the longitudinal direction on the inner surface thereof. To be done. Reference numerals 6, 7 and 8 denote outer plate members constituting the roof structure, which are arranged so as to extend in the longitudinal direction of the vehicle body, and are made of a light alloy extruded shape member integrally formed with a rib extending in the longitudinal direction on the inner surface thereof. To be done. 9 is the outer plate member 2, 3, 4, 5
Is a side column corresponding to a bone member arranged on the inner surface side of the above, that is, the side on which the rib 13 is formed. The lower end of the side pillar 9 is joined to a long base or a side beam of an underframe. Reference numeral 10 is a rafter corresponding to a bone member arranged on the inner surface side of the outer plate members 6, 7, and 8, that is, the side on which ribs are formed.

Next, the assembling situation of each member will be described by taking the side structure as an example.
First, the outer plate members 2, 3, 4, 5 forming the side structure are arranged side by side in the width direction on the jig 1 formed by matching the member supporting surface with the outer plate surface of the side structure. . After positioning the outer plate members 2, 3, 4, 5 respectively, they are restrained. The restraint is performed by the outer plate members 2, 3, 4, 5
Focus on the joint end part of. In such a restrained state, the outer plate members 2, 3, 4, 5 are joined by forming a continuous welding line 11 in the longitudinal direction of the vehicle body. The welding of the welding line 11 of the outer plate members 2, 3, 4, 5 is performed from the inside of the outer plate members 2, 3, 4, 5 that is, the side where the ribs 13 are formed, and adjacent welding is performed. It is done so that the edges are completely welded. That is, a beat is formed on the back surface in the welding direction and welded, and the beat portion later finishes the surface to be smooth.
At this time, it is possible to confirm an unwelded portion, a blow hole, etc. in the welded portion. Moreover, the welding work can be simultaneously performed on the joints of the outer plate member 2 and the outer plate member 3, the outer plate member 3, the outer plate member 4, the outer plate member 4, and the outer plate member 5. That is, since all the welding lines 11 between the outer plate members extend parallel to the longitudinal direction of the vehicle body, they can be automated and performed simultaneously. When the welding and joining work of the outer plate members 2, 3, 4, 5 is completed, the side column 9 which is a bone member is placed at the joining position on the inner surface side, that is, the upper surface of the outer plate.
In this state, the outer plate members 2, 3, 4, 5 and the side columns 9 are restrained, and the ribs 13 of the outer plate members 2, 3, 4, 5 and the side columns 9 form a welding line 11a. By joining.

According to such a manufacturing method, each outer plate member 2, 3, 4,
Since the joint portion 5 extends linearly in the longitudinal direction of the vehicle body, it can be easily automated and, as described above, it is also possible to simultaneously weld a plurality of joint portions. Therefore, it is possible to reduce the number of work steps in manufacturing the side structure, that is, the structure block, and it is possible to easily manufacture the structure block in a short time.

Further, since the outer plate members 2, 3, 4, 5 and the side pillars 9 are joined via the upper surfaces of the ribs 13, the welding line 11a
The distortion generated on the surface of the outer plate can be reduced by the welding heat when forming the.

Further, the joint between the outer plate members 2, 3, 4, 5 and the joint between the outer plate to which the outer plate members are joined and the side column 9 can all be performed from the inside of the outer plate members 2, 3, 4, 5. Therefore, it is possible to carry out without moving or reversing the respective constituent members on the same jig 1. Therefore, it is possible to reduce the number of man-hours required for the movement and reversal of the outer plate, and there is no problem such as distortion of the outer plate surface due to deformation.

By the way, the assembling work of the roof structure is carried out on a jig having a member supporting surface which is coincident with the outer plate surface of the roof structure like the side structure. Therefore, the same effect can be achieved for the roof structure.

Next, the window opening of the side structure is formed by cutting out a portion of the outer plate member 4 corresponding to the window opening. The window opening is processed as shown in FIGS. 5 to 8 described later. That is, the rib 13 formed at a position corresponding to the edge of the window opening at the time of the outer plate member 4 alone is cut out with a predetermined width. The width for cutting out the ribs 13 takes into consideration the width required for disposing the window glass and the like around the window opening and the dimensional tolerance associated with the processing of the window opening. Simultaneously with the work of cutting off the ribs 13, cuts 34 are made intermittently along the shape of the window opening. Then, as described above, when the side structure is completed by joining the other outer plate members 2, 3 and 5 and further joining the side pillars 9, unnecessary portions are formed along the cut 34 of the window opening. Is completely removed. In addition, the width of the cut 34 is changed by welding heat input when the outer plate member 4 is joined to another outer plate member, at the time of joining to the frame member and at the time of joining side structures, roof structures and underframes. It is decided considering its strength so that it can withstand. The window opening may be processed after the entire structure is completed.

By cutting the ribs 13 at the edge of the window opening in advance in this way, workability can be improved. Further, the window opening is processed in a state where the side structure or the entire vehicle body structure is completed so that the outer plate 4 is joined to another outer plate, the bone member is joined, and the side structure and the roof structure are joined. , It is less affected by welding heat input when joining the underframes together, and deformation can be prevented.

On the other hand, the processing of the window opening in the side structure may be performed without providing the cut 34.

Further, as described above, by removing the rib 13 in the portion corresponding to the edge of the window opening of the outer plate 4, it is possible to easily install a member constituting the window, such as a window glass or a window frame. Furthermore, the seal around the window can be easily performed.

Next, the floor plate member 12 provided on the underframe will be described. As shown in FIG. 2, the floor plate member 12 is installed on the upper surface of the underframe, and has a configuration in which a cross section in the width direction thereof has an arc shape, that is, a curvature. Floor plate constituting the floor plate member 12
14 is also made of a light alloy extruded mold material in which ribs 13 are integrally formed on the inner surface side, that is, the inside of the passenger compartment. This floorboard
14 are arranged so as to extend in the longitudinal direction of the vehicle body, and a plurality of them are arranged side by side in the width direction and joined to each other to form a floor plate member 12. Further, a flange 15 for fixing the floor plate member 12 itself to the cross beam 16 is formed on the surface of the floor plate 14 opposite to the surface on which the ribs 13 are formed.

The jig for arranging and joining the floorboards 14 in the width direction thereof has a curved surface whose member supporting surface coincides with the surface of the floorboard member 12 on the rib 13 side. In addition, a concave portion into which the rib 13 can be inserted is formed on the member supporting surface of the jig.

On the member supporting surface of such a jig, a plurality of floor plates 14
The surface on which the 13 is formed is placed down, and the floor plate 14 is welded and joined while the joint ends of the floor plates 14 are mainly restrained. Then, the horizontal beam or the horizontal beam and the side beam forming the underframe are placed and restrained on the floor plate member 12, and both are joined. By constructing the underframe block in this manner, the underframe block can also be manufactured by welding from one direction side on the same jig, so that workability can be improved.

In addition to constructing the underframe block as described above, a floor board supporting surface is previously formed on the horizontal beam, and after the horizontal beam and the side beam are assembled on a jig, the upper surface of the horizontal beam is set on the jig. It can also be used as

By the way, since the jigs forming the structure block and the underframe block have member supporting surfaces that match the plate member surface shape of each block, the plate members are joined with the curvatures accurately corresponding to each other. be able to. Therefore, the outer surface of the vehicle body structure can be accurately configured, and the appearance can be improved. Further, the bone member is joined to the plate member while maintaining the dimensional accuracy of the surface of each plate member, and from this point also, the appearance of the surface of the vehicle body structure can be improved.

Similar to the structure block, if the end structure is made of a plate member having ribs, the same effect can be obtained.

Next, another embodiment of the vehicle body structure according to the present invention will be described with reference to FIG. In the figure, reference numeral 20 is a width direction center line of the vehicle body structure, and the figure shows a cross section only on the left side. Floor board material 21
Is composed of a plurality of floor plates 21a, and side beams 22 are joined to the ends in the width direction thereof. A flange 26 and a rib 25 for supporting a passenger floor material 27 are integrally formed on the floor plate 21a, and the floor plate 21a is a light alloy extrusion mold material. Side skin 23
Is composed of a plurality of outer plate members 23a, and ribs 25 are integrally formed on the outer plate members 23a. The roof outer plate 24 is composed of a plurality of outer plate members 24a, and ribs 25 are also formed on the outer plate member 24a.

By the way, the joint W between the floor plate 21a and the outer plate members 23a, 24a is performed from one side of each. The joint W
The case of the outer plate member 23a will be described with reference to FIG. The joint end 29 of the outer plate member 23a is thicker than other portions, and a V-shaped welding groove is formed inwardly on the end face thereof. That is, the joining end 29 is configured to be joined by welding from the side of the outer plate member 23a where the rib 25 is provided. The groove shape is not limited to the V shape and may be another shape such as a U shape.

Further, the joint portion W ′ of the side beam 22 and the joint portion W ″ of the side outer plate 23 and the roof outer plate 24 are joined by lap welding.
That is, the side structure, roof structure, underframe, and other parts corresponding to the joints of the blocks are joined by lap welding.

In the vehicle structure, since the outer plate members 23a and 24a surrounding the passenger compartment and the floor plate 21a have the ribs 25, sufficient rigidity can be secured against pressure fluctuations that occur when the vehicle passes through the tunnel at high speed. . Therefore, the outer plate members 23a, 24a and the floor plate 21a themselves can be made thin to reduce the weight of the entire vehicle structure.

Next, referring to FIG. 5, a method of processing the window opening or other opening of the outer plate member or floor member will be described. In the figure, a plate member 31 having a rib is a bed 32.
The rib is cut and the slit 34 is processed by the cutting machine 33. The ribs are cut and the cuts 34 are made in correspondence with the positions and shapes of the window openings or other openings. Further, the notch groove 34 is formed intermittently to form a connecting portion 35. This joint 35
Is formed to have a width necessary to prevent the plate member 31 from being deformed by a force generated when the plate member 31 is joined to another plate member or a bone member or when each structural block is joined. To be done.

Next, FIGS. 6 to 8 show stepwise the situation in which the plate member 31 is joined on the jig 36. In FIG. 6, each plate member 31 is positioned and constrained on the member supporting surface of the jig 36. Rails 38 are provided on both sides of the jig 36 for the automatic welding machine 37 to travel. The plurality of plate members 31 are joined by the automatic welding machine 37. Next, as shown in FIG. 7, the bone member 39 is placed on the plate member 31,
Join both. Then, as shown in FIG. 8, when the joining of the bone members 39 is completed, the window opening or another opening is opened.

When the above is put together, there are the following effects.

Welding of a plurality of extruded mold members is performed from above, and then welding of ribs of this extruded mold member and bone members is performed from above. That is, the welding of the extruded mold members is performed from the inner surface side of the vehicle, and then the bone member is welded from this inner surface side, so for example, the welding of the extruded mold members is performed from the outer surface,
Next, as compared with the method of inverting the block and welding the bone member to the inner surface, the deformation can be prevented and an accurate block can be manufactured, and the work is simplified and can be manufactured at low cost.

Particularly, after welding the plurality of extruded mold members, without removing the welding block of the extruded mold members from the jig, the bone member is placed on the rib, and the bone member and the rib are welded. There is. For this reason, since the welding block is transported after welding the bone members, it is possible to prevent deformation during transportation.

Further, since the skeleton member is welded to the ribs, distortion due to welding heat of the skeleton member does not reach the plate portion of the extruded shape member (that is, the outer plate of the vehicle). Further, since the welding is performed on the ribs, the welding positions are intermittent, and from this point also, the heat input to the outer skin of the vehicle is reduced. For this reason, especially when it is used for a side structure whose appearance is important, it is possible to eliminate the strain removing work.

Further, when an opening such as a window is provided, the extruded mold material in this portion is weak. However, since the bone members are arranged between the openings and the extrusion members of the opening portion and the upper and lower portions thereof are connected by one bone member (side pillar). It can be made strong and the occurrence of distortion can be prevented. Furthermore, since the side pillars intersect the ribs of the extruded shape members of the above-mentioned three parts, respectively, the side pillars can be made strong and the occurrence of distortion can be prevented.

Further, since the unnecessary ribs are removed at the stage of the extruded shape material before welding, the cutting device can be downsized.

In addition, there is a break in the opening for the extruded shape material before welding.
The cutting device that inserts the cut 34 can be made small because the cut is inserted. Since a plurality of extrusion mold materials are welded and then the discontinuous portion (joint portion 35) of the cut 34 is cut to form an opening, a small cutter such as a portable cutter can be used. Therefore, the entire cutting device can be downsized.

Further, the openings are connected by a connecting portion 35. For this reason, since there is no large opening in the extruded mold material, it is possible to prevent deformation of the mold material when the extruded mold material is conveyed.

Further, as is clear from the figure, since the discontinuous portion (joint portion 35) is provided in the vicinity of the welded portion, deformation during welding can be prevented. As is apparent from the figure, this connecting portion 35 is preferably provided at the center of the length of the cut 34 provided along the welding line.

〔The invention's effect〕

As described above, according to the present invention, it is possible to easily and inexpensively manufacture a vehicle body structure with less distortion.

[Brief description of drawings]

1 is a perspective view showing a part of a structure manufactured by an embodiment of a structure block manufacturing method according to the present invention, FIG. 2 is a perspective view showing the whole structure shown in FIG. 1, and FIG. 3 is a book. FIG. 4 is a cross-sectional view of a structure of another embodiment according to the present invention, FIG. 4 is an enlarged cross-sectional view of a joint portion of outer plate members in FIG. 3, and FIG. FIG. 8 and FIG. 8 are perspective views showing an example of a manufacturing state of a structure block. 1 ... Jig, 2, 3, 4 ... Outer plate member, 9 ... Side pillar, 1
1, 11a …… Welding line, 13 …… Rib

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroyuki Yamada 794 Azuma Higashitoyo, Shimomatsu City, Yamaguchi Prefecture Inside the Kasado Plant, Hitachi Ltd. (72) Inventor Kiyotaka Kikumoto 794 Azuma Higashitoyo, Shimomatsu, Yamaguchi Incorporated Hitachi Ltd. Kasado Plant (72) Inventor Takesei Watanabe 794 Azuma Higashitoyo, Shimomatsu City, Yamaguchi Prefecture Incorporated Hitachi Ltd. Kasado Plant (72) Inventor Ryoichi Takayama 794 Azuma Toyoi, Shimomatsu, Yamaguchi Prefecture Stock company Hitachi Ltd. Kasado Plant (72) Inventor Sumio Okuno 502 Jinrachicho, Tsuchiura City, Ibaraki Prefecture Inside the Institute for Mechanical Research, Hiritsu Manufacturing Co., Ltd. (56) References: 60-141990 (JP, U) Light metal vehicle Committee Report (July 15, 1984) Japan Railway Co. and Japan Light Metal Association P.P. 148-P. 215

Claims (9)

[Claims] 1. A roof of a vehicle, a wife at the longitudinal end of the vehicle,
In a method of manufacturing at least one structural block on a side along a longitudinal direction of a vehicle, a plurality of extruded mold members having ribs formed along the longitudinal direction are arranged along an axial direction of the extruded mold members to be a jig. Then, the end portions of the plurality of extrusion mold members are butt-welded to each other, and then a bone member having substantially the same width dimension as the block formed by the plurality of extrusion mold members is formed on the ribs of the plurality of extrusion mold members. The ribs and the ribs are welded in the same direction as the butt welding direction. Method. 2. The method of manufacturing a structural block for a vehicle according to claim 1, wherein the plurality of extrusion mold members are placed on the jig with their ribs facing upward, and the ends of the plurality of extrusion mold members are A structuring block for a vehicle, wherein the skeleton member is placed on the ribs of the plurality of extruded mold members and joined by welding from above. . 3. The method of manufacturing a structural block for a vehicle according to claim 1, wherein after welding the plurality of extruded die members, the welding block of the extruded die members is not removed from the jig.
A method of manufacturing a structural block of a vehicle, wherein the skeleton member is arranged on the rib, and the skeleton member and the rib are welded. 4. The method for manufacturing a vehicle structural block according to claim 1, wherein the butt welding of the extruded mold members is performed so as to generate a back bead, and after the bone member is welded, the back bead is smoothed. A method for manufacturing a vehicle body structure block characterized by: 5. The vehicle structure block manufacturing method according to claim 1, wherein the extruded mold material forming the opening is arranged on the jig after the rib around the opening is removed. A method of manufacturing a structural block of a vehicle. 6. The method of manufacturing a vehicle body structure block according to claim 5, wherein after the ribs are removed, cuts and joints are alternately provided on the extruded shape member along the outer edge of the opening, and the butt welding is performed. After that, the connecting portion is cut off. 7. The method of manufacturing a vehicle body structure block according to claim 6, wherein the connecting portion is provided in the vicinity of a welding line for welding the extruded mold members to each other. 8. The method of manufacturing a vehicle body structure block according to claim 5, wherein the opening is a window, and the plurality of extruded mold members form a side body structure along a longitudinal direction of the vehicle. A method of manufacturing a structural block of a vehicle. 9. A structure of a side structure having a plurality of windows along a longitudinal direction of a vehicle, wherein the side structure has a plurality of extruded mold members having ribs along the longitudinal direction only on an inner surface side of the vehicle, and the window. And a window, which is composed of a plurality of side pillars having a length substantially equal to the width dimension of a block formed by the plurality of extruded mold members, and the plurality of extruded mold members have a width thereof. The direction is arranged in the vertical direction of the vehicle and the ends thereof are butt-welded to form one block, the welding bead of the welding is on the inner surface side, and the plurality of windows are the center in the width direction of the block. An opening is provided for the extruded mold member of the portion, and the side pillar is welded to each of the ribs of the plurality of extruded mold members.