JPH02279457A - Vehicle body block manufacturing method and body structure - Google Patents

Abstract

PURPOSE:To manufacture a structure block speedily and easily by arranging plural numbers of outside plate members, forming the structure block, in a row on a jig and, after binding and welding them together, setting up a frame member on each rib of these outside plate members for binding and welding. CONSTITUTION:When a structure block for a vehicle, for example, a side structure is manufactured, first of all, a lot of outside plate members 2-4 forming the side structure set up on a support surface of a jig 1 formed in accord with a surface of the side structure as arranged in the cross direction, while these members are bound together. Next, welding (11) to be continuing in a body longitudinal direction is applied to these outside plate members 2-4 bound, joining each of these plates 2-4 together. At this time, this welding (11) takes place from the inside of the outside plates 2-4, namely, from the side forming a rib 13. Successively, a side pillar 9 or a frame member is set up on an inner surface of the outside plates 2-4, while these plates are bound together. Then, welding (11a) is applied to each rib 3 of the outside plates 2-4 and the side pillar 9, joining them together.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a vehicle body block and a vehicle body structure a;ti, and in particular to a method for manufacturing a vehicle body block suitable for a vehicle body made of extruded material. and vehicle body structure.

[Conventional technology]

The conventional manufacturing method for a vehicle body structure made of steel is to set a thin plate with openings such as side windows on a jig, and then directly attach vertical and horizontal lines onto the thin plate outer plate. A bone member was mounted to connect the thin outer plate to the longitudinal and transverse bone members.

Note that related manufacturing methods of this type include, for example, Japanese Patent Publication No. 63-12027.

On the other hand, in a vehicle body constructed of extruded shapes made of light alloy, the framework is integrally formed on the shapes themselves, so the structure is such that the shapes are arranged in each part in the longitudinal direction or circumferential direction of the vehicle body and are joined to each other. It became. For example, related structures of this type can be found in "Light Metal Vehicle Committee Report 3, 1974-1975", published by the Japan Road Vehicle Industry Association, September 15, 1978, p. 70. Examples include pages 72 to 72.

[Am to be solved by the invention] Among the above conventional techniques, in the case of a vehicle body made of steel, distortion is likely to occur on the surface of the thin outer plate, and it is necessary to remove the distortion when the vehicle body is completed. Therefore, a great deal of time and effort was required to remove the distortion.Furthermore, in order to prevent the distortion from occurring during the production of the vehicle structure, the thin skin was placed under tension and the bones were removed. It is conceivable to join the material, but it would require a device to apply tension, and
It is conceivable that a large number of man-hours are required to install the thin outer panels.

On the other hand, by extrusion molding! 1#: There was a problem in that the joining of the extruded members to each other was complicated, making it impossible to automate the work. In particular, conventional light alloy extruded materials have a structure in which the joints overlap each other, and welding work must be performed on both sides of the extruded materials for joining, which requires a great deal of time and effort. Ta.

Furthermore, in order to prevent distortion from occurring on the surface of the vehicle body structure, it is conceivable to increase the thickness of the extruded material itself, but even though it is made of frog alloy, there is a problem in that the overlap of the entire vehicle body structure increases.

A first object of the present invention is to provide a method for manufacturing a vehicle body block made of light alloy that can be easily manufactured in a short time.

A second object of the present invention is to provide a method for manufacturing a vehicle underframe block that can easily manufacture a light alloy vehicle underframe block in a short period of time.

Furthermore, a third object of the present invention is to provide a vehicle body structure that can reduce strain occurring on the surface of the vehicle body.

[Means to solve the problem]

The first object is to arrange a plurality of outer panel members made of extruded members with ribs in the longitudinal direction in the width direction on a jig configured by aligning the member support surface with the outer surface of the structural design. While the plurality of outer panel members are restrained, the outer panel members are welded together from the inside, and then a bone member is placed on each rib of the outer panel member to restrain the back member and the outer panel member. situation,
This is achieved by joining by welding.

Next, the second object of the present invention is to place a support surface on a jig having a member support surface that matches the surface of the floor slab member provided on the upper part of the underframe.
A plurality of floorboards made of extruded material, each of which is drawn through the longitudinal direction of the underframe and provided with ribs in the longitudinal direction, are lined up in the width direction and welded together from the inner surface of the floorboards while the plurality of floorboards are restrained. Then, the above-mentioned wires and members are provided on the upper surface of the cross beam whose both ends are joined to the side beams, and the welding is performed.

Next, a third object of the present invention is to provide a vehicle body structure composed of a side structure, a ridge structure, an end structure, and an underframe p),
At least the side structure and the ridge structure are provided with an outer panel member formed of an extruded material that is disposed so as to extend through the body longitudinally and integrally has ribs extending in the longitudinal direction on the inner surface thereof, and ribs of the outer panel member. (This is achieved by constructing the joint with bone members.

[For production]

In the above structure block manufacturing method, the extruded molds arranged on the jig are joined from the inside of the extruded molds, so the work is easy and easy, and automation is possible, and the joining work can be completed in 9r1.
It can be done easily and on time.

Furthermore, since the bone members are joined to the extruded shapes on the same jig used to join the plurality of extruded shapes, the work of joining the bone members can be carried out easily and in a short time.

Next, in the underframe block manufacturing method, since the joint portion of the floorboard extends in the longitudinal direction of the underframe on the jig, the floor member can be easily manufactured in an automated manner in a short time. Furthermore, since the joining operation is performed on a jig, the dimensional accuracy of the floor member can be improved.

Furthermore, in the body structure of the vehicle, since the bone members are joined to the upper surface of the rib of the outer panel member, it is possible to reduce distortion caused by welding heat accompanying welding of the bone members.

〔Example〕

Hereinafter, one embodiment of the present invention will be explained with reference to FIGS. 1 and 2. In the figure, l is the side structure.

This jig has a member support surface that matches the outer surface of the roof structure. That is, the member supporting surface supports the outer panel members that constitute the surfaces of the side structures and the roof structure, and its cross-sectional shape in the width direction corresponds to the surface shape when the vehicle structure is completed. 2, 3, 4゜5 is an outer panel member constituting the side structure, which is an extruded light alloy member that is arranged so as to extend in the longitudinal direction of the vehicle body, and has ribs I3 extending in the longitudinal direction integrally formed on its inner surface. 1i4 is made from. Reference numerals 6 and 7.8 denote outer panel members constituting the roof structure, which are arranged so as to extend in the longitudinal direction of the vehicle body, and are made of extruded light alloy members having ribs extending in the longitudinal direction integrally formed on the inner surface thereof. be done.

9 is the outer panel member 2. 3. 4. 5, that is, on the side forming the ribs 13, is a side column corresponding to a bone member. The lower ends of the side columns 9 are joined to the side beams of the long foundation or underframe. Reference numeral 10 denotes a rafter corresponding to a bone member disposed on the inner surface side of the outer panel members 6, 7.8, that is, on the side forming the ribs.

Next, the assembly situation of each of the above-mentioned members will be explained using a side gutter body as an example.

First, the outer panel members 2, 3, and 4.5 constituting the side structure are placed side by side in the width direction on the jig 1, which is configured so that the member support surface matches the outer panel surface of the side structure. do. The outer panel member 2. 3. After positioning the 4.5 degrees, they are restrained.

The restraint is the outer panel member 2. 3. 4. Focus on the joint end portion of step 5. In this restrained state, the outer panel members 2.3 and 4.5 are joined by forming a continuous weld line 11 in the longitudinal direction of the vehicle body.

Note that the outer panel member 2. 3. 4. 5 welding line 11
The welding is performed from the inside of the outer panel members 2, 3, 4, 5, that is, from the side forming the rib 13, and is performed so that adjacent joint ends are completely welded. That is, welding is performed with a bead exposed on the back surface in the welding direction, and the surface of the bead portion is later finished smooth. At this time, the welded area should be inspected for unwelded areas, blowholes, etc. Further, the outer panel member 2 and the outer panel member 3. Outer panel member 3 and outer panel member 4. Welding operations can also be performed at the joints of the outer panel members 4 and 5 at the same time. That is, since all the welding lines 11 between the respective outer panel members extend parallel to the longitudinal direction of the vehicle body, welding can be performed simultaneously and automatically. Said outer panel member 2. 3. 4. When the welding work 5 is completed, a side post 9, which is a bone member, is placed on the inner surface, that is, the upper surface of the outer panel at the joining position.

In this state, the outer panel member 2. 3. 4. 5 and the side post 9, and each rib 13 of the outer panel members 2, 3, 4.5 and the side post 9 are joined by forming a weld line 1.1a.

According to such a manufacturing method, each outer panel 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 it is also possible to weld a plurality of joint portions at the same time as described above. Therefore, the number of man-hours required for manufacturing the side structure, that is, the structure block, can be reduced, and the structure block can be manufactured in a short time with a size δ.

Further, since the outer panel members 2, 3, 4.5 and the side columns 9 are joined through the upper surface of the rib 13, the weld line 11
It is possible to reduce the distortion that occurs on the outer plate surface due to the welding heat when forming a.

Furthermore, each outer panel member 2. 3. 4. 5, and the connection between the outer panel and the side column 9 to which the outer panel member is connected are all connected to the outer panel member 2.5. 3. 4. Since the process can be carried out from inside the jig 5, the process can be carried out on the same jig 1 without moving or inverting each component. Therefore, the number of man-hours associated with one reversal of the movement of the outer panel can be reduced, and problems such as distortion of the outer panel surface due to deformation do not occur.

By the way, the assembly work of the roof structure is performed on a jig having a member support surface that corresponds to the surface of the outer panel of the roof structure, similarly to the side structures. Therefore, similar effects can be achieved for the roof structure as well.

Next, the window opening of the side structure is constructed by cutting out a portion of the outer panel member 4 that corresponds to the window opening. The window opening is processed as shown in FIGS. 5 to 8, which will be described later. That is, the rib 13 that is formed at a position corresponding to the edge of the window opening when the outer panel member 4 is formed alone is cut off by a predetermined cut.

The width of the rib 13 to be cut is determined in consideration of the width necessary for installing a window glass or the like around the window opening and the dimensional tolerances associated with processing the window opening. Simultaneously with this cutting operation of the rib 3, cuts are made intermittently along the shape of the window opening. Then, as mentioned above, other outer panel members 2
, 3.5, and the side pillars 9 to complete the side structure, the unnecessary portions are completely removed along the cuts of the window opening. Note that the width of the cut is the width of the outer panel member 4.
It is determined in consideration of its strength so that it can withstand deformation due to welding heat input when joining with other outer panel members, when joining with frame members, and when joining side structures and one roof structure frame to each other. Furthermore, the window openings may be processed after the entire structure is completed.

By cutting out the rib 13 on the edge of the window opening in advance in this manner, workability can be improved. In addition, by processing the window openings when the side structure or the entire vehicle structure is completed, when joining the outer panel 4 with other outer panels,
It is less affected by welding heat input and deformation can be prevented when joining with the frame members and when joining the @structure and two roof structure frames to each other.

On the other hand, the window opening in the side structure may be processed without providing the cut.

Furthermore, by removing the ribs 13 in the portions of the outer panel 4 corresponding to the edges of the window openings as described above, the members constituting the window, such as window glass or window frames, can be easily installed.

Furthermore, the area around the window can be easily sealed.

Next, the floor plate member provided on the underframe will be explained. As shown in FIG. 2, the floor plate member is installed on the upper surface of the underframe, and its cross section in the width direction has a circular arc shape, that is, a curvature. Floor plate 1 constituting the floor plate part for hitting the ball
4 is also constructed of an extruded light alloy material with ribs 13 integrally formed on its inner surface, that is, on the inside of the passenger compartment. The floorboards 14 are arranged so as to extend in the longitudinal direction of the vehicle body, and a plurality of floorboards 14 are lined up in the width direction and joined together to form a floorboard member branch. Further, flanges b for fixing the floor plate members themselves to the cross beams 16 are formed on the surface of the floor plate 14 opposite to the surface on which the ribs 13 are formed.

A jig for joining such floorboards 14 side by side in the width direction has a member supporting surface that is curved to match the surface of the rib 13 side of the floorboard member hill. Furthermore, a recess into which the rib 13 can be inserted is formed on the member support surface of the jig.

A plurality of floor plates 14 are placed on the member support surface of such a jig with the surface on which the ribs 13 are formed facing down, and the joint ends of each floor plate 14 are welded together while being focused on restraint. Then, the cross beams or the cross beams and the side beams constituting the underframe are placed on the floor plate member 12 and are joined together in a restrained state. By constructing the underframe block in this manner, the underframe block can also be manufactured by welding from one direction on the same jig, thereby improving workability.

In addition to configuring the underframe block as described above, the floor plate support surface is configured on the cross beam in advance, and after assembling the cross beam and the side beam on a jig, the upper surface of the cross beam is fixed on the jig. It is also possible to use it as a

By the way, the jigs constituting the Moeki structure block and the underframe block have member support surfaces that match the surface shape of the plate members of each block, so the curvatures of each plate member can be accurately matched. It can be joined by Therefore, the outer surface of the vehicle body structure can be configured with high precision, and the appearance can be improved. In addition, the frame members can be joined to the end plate members while maintaining the dimensional accuracy of the surface of each plate member. From this point of view as well, the appearance of the vehicle body structure surface can be improved.

It should be noted that similar effects can be obtained if the end structure is made of a plate member having ribs in the same way as the structure block.

Next, another embodiment of the vehicle body structure according to the present invention will be described with reference to FIG. In the figure, (9) is the center line in the width direction of the vehicle body, and the figure shows only the left side cross section. The floor plate member 21a is composed of a plurality of floor plates 21a, and side beams n are joined to the widthwise ends thereof.

Flanges and ribs 5 for supporting the cabin floor material n are integrally formed on the floor plate 21a, and the floor plate 21a is an extruded member made of light alloy. The side outer panels include a plurality of outer panel members 2
3 m long, and a rib δ is also integrally formed on the outer plate member 23a. The roof outer panel consists of a plurality of outer panel members 24a.
A rib δ is also integrally formed on the outer panel member a.

By the way, the joint W between the floor plate 21a and the outer panel members Z3a and 24a is made from the -blade side p).
, the joint W will be explained with reference to FIG. 4 in the case of the outer panel member 23a. The joint end of the outer panel member Z3a is thicker than other parts, and a v-shaped welding groove is formed inward on the end surface. The joint end 4 is configured to be welded to the outside plate member 23a with the rib δ. Note that the groove shape is not limited to a V-shape, but may be a new shape such as a U-shape.

Further, the joint W' in the side beam n and the joint W' between the side outer plate n and the roof outer plate U are joined by lap welding.

That is, portions corresponding to the joints of each block, such as the side structure, roof structure, and underframe, are joined by lap welding.

The vehicle structure includes outer panel members Z3a, 24a surrounding the passenger compartment.
Since the floor plate 21a has the ribs 5, sufficient rigidity can be ensured against pressure fluctuations that occur when both the floor plates 21a and 21a pass through the tunnel at high speed. Therefore, the outer panel member Z
3a, 24a and the floor plate Zla itself are thinned (by
It is also possible to reduce the weight of the entire vehicle structure.

Next, the processing status of window openings or other openings in the outer panel member or floor member will be explained with reference to FIG. In the same figure, a plate member 31 having a ribbed shape has a bed η
The rib is cut out and the notch fs34 is processed by a cutting machine &. Note that the cutting of the ribs and the notch grooves are performed in accordance with the position and shape of the window opening or other opening. Moreover, the notch grooves U are formed intermittently to form connecting portions A. This joint part has a width necessary to prevent the plate member 31 from deforming due to the force generated when joining the continuation version member 31 with other plate members or bone members or when joining each structure block. It is formed with

Next, FIGS. 6 to 8 show step by step the situation in which the plate members 31 are joined on the jig A. In FIG. 6, each plate member 31 is positioned and restrained on the member support surface of the jig audience. Rail links are provided on both sides of the jig for the automatic welding machine R to run on. The plurality of plate members 31 are joined by the automatic welding machine. Next, as shown in FIG. 7, a bone member □□ is placed on the plate member 31.
Place □ and join both. Then, as shown in FIG. 8, when the bone impact tool is completely bonded, the window opening or other opening is opened.

〔Effect of the invention〕

According to the present invention, a body block for a light alloy vehicle can be easily manufactured in a short time.

Further, according to the present invention, an underframe block for a light alloy vehicle can be easily manufactured in a short time.

Further, according to the present invention, it is possible to reduce distortion occurring on the surface of the vehicle body structure.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a part of a structure manufactured by an embodiment of the structure block manufacturing method according to the present invention;
The figure is a perspective view showing the entire structure shown in FIG. 1, FIG. 3 is a sectional view of the structure of another embodiment according to the present invention, and FIG.
An enlarged sectional view of the outer panel member joint in the figure! @Figure 5 is a perspective view showing the processing status of the plate member, and Figures 6, 7, and 8 show an example of the manufacturing status of the structure block! FIG. 1... Jig, 2゜3.4... Outer plate member, side column, 'Llla... Welding line, 13... Curved rib spear 2 diagram

Claims (1)

[Claims] 1. A plurality of outer panel members made of extruded members provided with ribs in the longitudinal direction are arranged in the width direction on a jig configured with the member support surface aligned with the outer surface of the structure block. , welding and joining the plurality of outer panel members from the inside with the plurality of outer panel members being restrained, and then placing a bone member on each rib of the outer panel member,
A method for manufacturing a vehicle body block, characterized in that the frame member and the outer plate member are welded together in a restrained state. 2. The method of manufacturing a vehicle body block according to claim 1, wherein the opening provided in the body block is formed by processing a single corresponding outer panel member. 3. A floor plate made of an extruded material with ribs provided in the longitudinal direction, which is pulled through the longitudinal direction of the underframe, on a jig having a member support surface that matches the surface of the floor plate member provided on the upper part of the underframe, A vehicle platform characterized in that a plurality of floor plates are arranged in the width direction, and the plurality of floor plates are welded together from the inner surface of the floor plates while being restrained, and then the floor plate members are welded to a cross beam whose both ends are joined to side beams. How to make frame blocks. 4. In a vehicle body structure composed of a side body structure, a roof body body, an end body body body, and an underframe, a rib is disposed extending through at least the side body body body and the roof body body in the longitudinal direction of the vehicle body, and extends in the longitudinal direction on the inner surface thereof. 1. A body structure for a vehicle, comprising: an outer panel member made of an extruded material integrally formed with the outer panel member; and a bone member joined to a rib of the outer panel member. 5. The vehicle body structure according to claim 4, wherein a floor plate is disposed so as to extend through the underframe in the longitudinal direction of the vehicle body, and is constituted by an extruded member having integrally formed ribs extending in the longitudinal direction on the inner surface thereof; A vehicle body structure comprising a side beam disposed at a position on the front side of an underframe, and a cross beam provided between the side beams, the end portion of which is joined to the side beam, and the floor plate is installed on the upper surface.