JPH05185967A - Assembly of automobile body and assembly device of automobile body - Google Patents

Abstract

PURPOSE:To provide a high quality car body of even assembly accuracy, and to reduce the size of an assembly device by providing processes of carrying in a center structure, carrying in, positioning and welding a side structure, and of carrying in, positioning and welding of a roof structure. CONSTITUTION:A center structure C is carried to a predetermined point of a car body main part assembly stage A by a center structure regulating jig 2, and a side structure S is carried to the assembly stage A by a side structure carrier device 3. The side structure S is received by a side structure regulating jig 4 from the side structure carrier device 3, and positioning is carried out in relation to the center structure C. A roof structure R is carried by a roof structure regulating jig 5, and positioning thereof is carried out in relation to the side structure S. The structure C, S, R, thus positioned by the regulating jigs 2, 4, 5 are welded and connected to each other by a welding device 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for assembling an automobile body for use in an automobile body assembly line.

[0002]

2. Description of the Related Art Assembling an automobile body is described in, for example, Japanese Patent Laid-Open No.
As disclosed in Japanese Laid-Open Patent Publication No. 153388, a center structure including a front wheel apron, a toe board, a front floor, a rear floor, a rear wheel apron, etc., which is a main part of a vehicle body, in an assembly stage of a main body part of an automobile body assembly line, Front pillars,
A vehicle body panel such as a side structure including a side sill and a rear quarter is loaded and positioned at a relative position on the stage so as to satisfy a predetermined assembly precision. Further, at the same stage, the positioned panels are temporarily fixed to each other by a welding device such as a welding robot to assemble a main part of the vehicle body which mainly determines the assembly accuracy of the vehicle body. After that, the main parts of the vehicle body are transported to other stages by a shuttle conveyor, etc., and the spot welding is additionally performed on the main parts of the vehicle body on those stages, and the vehicle body panels such as the front roof rail, the rear roof rail and the roof panel are further assembled, An assembly method is adopted in which the assembly accuracy of the vehicle body is measured on the subsequent stage.

[0003]

According to the above-mentioned conventional automobile body assembly method, the main body assembly stage is
After welding the center structure and the side structure positioned at relative positions with an assembly jig etc., the position restriction by the assembly jig etc. is temporarily released, and it is transported to the next assembly stage before the front roof rail, rear roof rail and roof. Since a vehicle body panel such as a panel is positioned and assembled, it is difficult to obtain a highly accurate automobile body, and there is a risk that variations in vehicle body assembly precision may occur. Further, since the stage for assembling the center structure and the side structure and the stage for assembling the roof panel etc. are provided, there is a problem that the size of the entire assembling apparatus is increased.

Accordingly, an object of the present invention is to provide an assembling method and an assembling apparatus for an automobile body, which can obtain a high quality automobile body with uniform assembling precision and which can be downsized.

[0005]

A method of assembling an automobile body according to the present invention, which achieves the above object, is a method of assembling an automobile body at an assembling stage of a vehicle body main part provided on an assembling line. Center structure loading step of positioning and mounting the center structure on the tool and loading it to the predetermined position of the main body assembly stage, and side structure loading step of loading the side structure to the main body assembly stage by the side structure loading device. The side structure regulated jig is received by the side structure regulated jig, and the center structure regulated jig and the side structure regulated jig located on the assembly stage of the main part of the vehicle body are positioned and fixed so that the relative position between the center structure and the side structure. Decision The side structure positioning step for connecting the center structure and the side structure welding step for welding and joining the center structure and the side structure positioned by the side structure restricting jig, and the roof structure for the main body by the roof structure restricting jig. And the roof structure regulating jig positioned on the main body assembling stage are positioned and fixed for relative positioning between the side structure and the roof structure. The roof structure positioning step to be performed and the side structure and the roof structure, which are positioned and fixed by the side structure regulation jig and the roof structure regulation jig, are welded and joined. The vehicle body assembling apparatus includes a roof structure welding step, and a vehicle body main body assembly stage provided on an assembly line and a center structure are positioned and loaded to a predetermined position of the vehicle body main body assembly stage. A center structure regulation jig, a side structure loading device for loading the side structure to the main body assembly stage, and a center structure regulation for receiving the side structure loaded by the side structure loading device and located on the main body assembly stage The side structure regulating jig, which is disposed on the assembly stage of the main body of the vehicle body for positioning and fixing the jig to perform relative positioning between the center structure and the side structure, and the roof structure are carried into the assembly stage of the main body portion of the vehicle, and The above The roof structure regulation jig that positions and fixes the side structure regulation jig to perform relative positioning between the side structure and the roof structure, and the center structure regulation jig, the side structure regulation jig, and the roof structure regulation jig, The welding device includes a positioned center structure, a side structure, and a roof structure, which are welded to each other.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an automobile body assembling method and an automobile body assembling apparatus according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an overall side view for explaining a main part of an assembly line of an automobile body. Reference numeral A in the figure denotes a stage for assembling the main part of the vehicle body provided on the assembly line. An assembly device 1 for an automobile body is arranged on an assembly stage A of a main body of the automobile.

The assembly apparatus 1 for an automobile body arranged on the main body assembly stage A in this case is already composed of a front wheel apron, a toe board, a front floor, a rear floor, a rear wheel apron, etc., which are the main body of the vehicle body as a work. A center structure C, a side structure S already assembled and constituted by a front pillar, a side sill, a rear quarter, etc., a duct Rb called a cowl extending in the vehicle width direction, a front roof rail Rc prepositioned on a roof panel Ra, a rear roof Rd, etc. The roof structure R composed of 1 is temporarily fixed by a welding device in a state where they are correctly positioned with respect to each other, and a main part of the vehicle body that mainly determines the assembly accuracy of the vehicle body is assembled.

In the assembling apparatus 1 for assembling the main body of the vehicle body as described above, the center structure regulating jig 2 for carrying the center structure C to a predetermined position of the main body assembling stage A and the side structure for carrying the side structure S to the assembly stage A are installed. Side structure regulation jig 4 which receives the side structure S from the carry-in device 3 and side structure carry-in device 3 and performs relative positioning with the center structure C, and roof structure regulation which carries in the roof structure R and carries out relative positioning with the side structure S Jig 5 and each of these restriction jigs 2, 4, 5
Each structure C, S, positioned relative to each other by
A welding device 11 such as a welding robot that welds and connects the Rs is a main component.

The center structure regulating jig 2 is a side structure regulating jig 4 as shown in the enlarged side view of FIG.
It has a center structure restricting jig carriage 2a that reciprocates on a guide rail 7 arranged between the main jig base 6 provided with and the mounting position of the center structure C. On the upper part of the center structure restricting jig carriage 2a, the center structure C is lowered from an upper position indicated by a chain line C'by a mounting device (not shown) to place the center structure C on a predetermined position. A clamp that fits into a reference hole Ca formed in the placed center structure C to perform the positioning function of the center structure C, and a clamp that opens and closes the center structure C positioned by the locate pin 2c by a cylinder piston device. 2d, and a regulation locating pin (not shown) that fits into a regulation hole (not shown) that opens in a side structure regulation jig 4 described later to perform a relative positioning function between the center structure regulation jig 2 and the side structure regulation jig 4. No) is provided.

On the other hand, the center structure control jig carriage 2
A protruding piece 2e is provided on the lower part of a, and the protruding piece 2e is provided.
Engages with the jig truck positioning lock 8 to move the jig truck 2a.
Fulfills the positioning of the moving end of. The jig cart positioning lock 8 is provided near the end of the guide rail 7, is provided on each of the base 9 and the main jig base 6, and is formed so as to be opened and closed by the cylinder piston device 8a. Further, the center structure regulation jig cart 2a is a drive device (not shown) for reciprocating on the guide rail 7.
have.

As shown in the enlarged side view of FIG. 5, the side structure carrying-in device 3 has a side structure carrying hoist 3a suspended from a carrying rail 10 installed above a main body assembly stage A of the vehicle body, and the carrying hoist 3a. It is composed of a side structure support portion 3b provided at the lower end. The side structure support portion 3b is provided with a side structure support portion 3d below the side structure support portion 3c for supporting the side structure S through the upright device 3c. It is easy to carry it to the location. The side structure S is attached to the side structure support portion 3d by the clamp 3e.

The side structure carrying-in device 3 receives the side structure S carried into the assembly stage A, and a pair of side structure restricting jigs 4 for positioning relative to the center structure C are provided facing each other. As shown in FIG. 3, the slide base 4b is provided so as to be movable in the contacting and separating directions by being guided by the rail 4a provided on the main jig base 6, and the slide base is provided by a drive device, for example, a cylinder piston device 4c. By moving 4b, they move toward and away from each other.

The side structure restricting jigs 4 provided to face each other are fitted into the reference holes formed at predetermined positions of the side structure S to locate the side structure S. The locate pin 4d of the front pillar portion and the rear quarter portion. A clamp 4e for fixing the side structure S positioned by the locate pin 4d, a restricting hole (not shown) into which the restricting locate pin (not shown) provided in the center structure restricting jig 2 is fitted,
Further, a restricting locate pin 5e provided on a roof structure restricting jig 5 which will be described later is fitted into the restricting hole 4f and the restricting locate pin 5 for performing a relative positioning function between the side structure restricting jig 4 and the roof structure restricting jig 5.
A regulation clamp 4g for fixing the roof structure regulation jig 5 positioned by e is provided. The restriction clamp 4g is operated by the cylinder piston device.

The roof structure control jig 5 is a roof structure transfer hoist 5 suspended from a transfer rail 10 installed on a main body assembly stage A as shown in FIG.
a and a roof structure support portion 5b provided at the lower end of the transfer hoist 5a. In the roof structure supporting portion 5b, a regulation plate 5c for positioning the roof structure R, a clamp 5d for fixing the roof structure R positioned by the regulation plate 5c, and a regulation hole 4 provided in the side structure regulation jig 4 are provided.
A restricting locate pin 5e fitted into f is fixed.
In addition, a duct R is provided in front of the roof structure supporting portion 5b.
A regulating plate 5f for positioning b and a clamp 5g for fixing the duct Rb are provided.

Further, a welding robot 11 for welding and connecting the structures C, S and R mutually positioned by the restriction jigs 2, 4 and 5 is movably provided near the main jig base 6. It is arranged on the slide base 11a. The welding robot 11 is capable of exchanging the welding gun at the standby position where the welding robot 11 moves backward on the slide base 11a.

Next, a method of assembling an automobile body using the automobile body assembling apparatus thus configured will be described with reference to the flowchart shown in FIG.

First, the center structure C is placed on the regulation plate 2b of the center structure regulation jig 2 located at the placement position of the center structure C, and the locate pin 2c is fitted into the reference hole Ca of the center structure C for positioning. Further, the clamp 2d is fixed to the center structure regulating jig 2.

In the center structure loading step (a), the center structure regulating jig 2 having the center structure C thus positioned and mounted is moved by the driving device along the guide rail 7 toward the main jig base 6. The projecting piece 2e provided on the center structure regulating jig cart 2a is locked by the jig cart positioning lock 8 provided on the main jig base 6 to lock the projecting piece 2e on the center structure regulating jig cart 2a, and thus the center structure regulating jig 2. The center structure C is carried in and fixed at a predetermined position.

In the subsequent side structure loading step (b), the side structure loading device 3 supporting the pair of side structures S on the pair of side structure supporting portions 3d facing each other is installed along the transport rail 10 to above the main jig base 6. A reference hole formed in the side structure S by moving, extending the transport hoist 3a, swinging the structure supporting portion 3d, and moving the side structure regulating jig 4 via the slide base 4b by the cylinder piston device 4c. The locating pin 4d is inserted into (not shown), the side structure S is fixed to the side structure regulating jig 4 by the clamp 4e, and the side structure S is received by the side structure loading device 3.

Subsequently, the side structure S is transferred to the side structure restricting jig 4, and the empty side structure carry-in device 3 contracts the carrier hoist 3a to raise the side structure supporting portion 3b, and the carrier rail 1
It is returned to the original position along 0, and is made to stand by in preparation for the loading of the next side structure S (side structure loading device retracting step c).

In the next side structure positioning step (d), the side structure regulating jigs 4 facing each other are further brought closer to each other by the cylinder piston device 4c, and a predetermined position of the main body assembly stage A is set in the center structure carrying step (b). The center structure regulating jig 2 that has been carried in and positioned at the position is fitted with a regulating locating pin (not shown) and a regulating hole (not shown) for relative positioning, and a center clamp is provided by a regulating structure (not shown). The regulation jig 2 and the side structure regulation jig 4 are fixed.

Next, in the side structure positioning step (d), the side structure welding step (e) is performed between the center structure C and the side structure S which are relatively positioned by the center structure restricting jig 2 and the side structure restricting jig 4. ) Is used for temporary attachment.

In the subsequent roof structure loading step (f), the roof structure restricting jig 5 supporting the roof structure R on the roof structure supporting portion 5b is first moved at a right angle from the line side of the transport rail 10 at a right angle, To the upper side of the main jig base 6 along the transfer rail 10, and the transfer hoist 5a is extended to lower the roof structure supporting portion 5b to carry in the roof structure R, and the next roof structure positioning step (g). ), The restricting locate pin 5e provided downward on the roof structure supporting portion 5b is fitted into the restricting hole 4f formed in the upper portion of the side structure restricting jig 4 to face the roof structure restricting jig 5. Performs relative positioning with the restriction jig 4,
And it is fixed by the clamp 4g.

The upper side structure S whose relative position is determined by the side structure restricting jig 4 and the roof structure restricting jig 5 and the roof structure R and between the side structure S and the ends of the duct Ra are the following roof structures. Temporary attachment is performed by the welding device 11 in the welding step (h).

In the next roof structure restricting jig step (i), the roof structure restricting jig 5 and the side structure restricting jig 4 are unfixed by the clamps 4g, and the transfer hoist 5a is contracted to remove the roof structure supporting portion 5b. Lift the roof structure support portion 5b away from the roof structure R, move the roof structure restriction jig 5 along the transport rail 10, and then return it to the original position on the line side in the direction perpendicular to the transport rail 10. , Wait for the next roof structure R to be loaded.

In the subsequent side structure regulation jig retracting step (j), the support of the side structure S to the side structure regulation jig 4 by the clamp 4e is released, and the side structure regulation is performed by the cylinder piston device 4c via the slide base 6. The jigs 4 are moved in directions away from each other and returned to their original positions.

Next, through the above steps, the center structure C, the side structure S and the roof structure R
The main part B of the automobile body formed by welding and the like to each other is a jig provided on the main jig base 6 with a projecting piece 2e provided on the lower portion of the center structure regulation carriage 2 in the vehicle unloading step (k). The center structure regulating jig carriage 2a is released from the carriage positioning lock 8 by a moving device (not shown), and thus the automobile body main portion B mounted on the center structure regulating jig carriage is conveyed to the center structure mounting position. Be carried out.

By assembling the main part B of the vehicle body, which determines the assembly accuracy of the vehicle body one after another by repeating the above steps in sequence,
In the subsequent step, the main body B of the vehicle body is subjected to spot welding, and a predetermined vehicle body panel is joined to assemble the vehicle body.

In the embodiment described above, the roof structure R constituted by the roof panel Ra and the duct Rb to which the front roof rail Rc, the rear roof rail Rd and the like are previously assembled is carried in and positioned by the roof structure restricting jig 5. After the duct Rb, the front roof rail Rc, and the rear roof rail Rd are carried in and positioned by a component regulating jig (not shown) and welded together, the component regulating jig is retracted, and subsequently the roof panel Ra
And the rear panel to the roof panel restriction jig (not shown)
It is also possible to carry out positioning by welding by means of welding.

In this case, the parts regulating jig is composed of a parts carrying hoist suspended on the carrying rail 10 installed on the main body assembly stage A and a parts bearing part provided at the lower end of the carrying hoist. Has a locate pin that fits into a reference hole formed at a predetermined position of each of the duct Rb, the front roof rail Rc, and the rear roof rail Rd to position it, a duct Rb positioned by the locate pin, a clamp that fixes the front roof rail Rc, and the rear roof rail Rd. Further, there is provided a restricting locate pin that is inserted into a restricting hole 4f formed in the upper portion of the side structure restricting jig 4 to determine the relative position of the side structure restricting jig 4.

On the other hand, a roof restricting jig (not shown) is composed of a roof transfer hoist suspended on a transfer rail 10 installed on the main body assembly stage A, and a roof support part attached to the lower end of the transfer hoist. The roof support portion has a regulation plate for positioning the roof panel Ra at a predetermined position and a clamp for fixing the roof panel in a state of being positioned by the regulation plate.

Next, an assembling method of an automobile body using the automobile body assembling apparatus thus constructed will be described with reference to a flow chart shown in FIG.

The steps from the center structure loading step (a) to the side structure welding step (e) shown in FIG. 8 are the same as the operations from the center structure loading step (a) to the side structure welding step (e) in the above-described embodiment. Therefore, the description is omitted.

In the subsequent component carrying-in step (f), a component restricting jig that supports the duct Rb, the front roof rail Rc, the rear roof rail Rd and the like is moved to the component supporting portion from the line side in the direction perpendicular to the transport rail to the transport rail 10. After that, the parts such as the duct Rb, the front roof rail Rc, and the rear roof rail Rd are carried in by carrying the parts along the carrying rail 10 to above the main jig base 6 and extending the carrying hoist and lowering the parts bearing part. To do.

In the next component positioning step (g), the regulating hole formed in the component regulating jig and the regulating locating pin arranged on the upper side of the side structure regulating jig are fitted to each other and the component regulating jig and the side structure are fitted. The relative position with respect to the restriction jig 4 is determined, and the mutual clamps are fixed by a clamp.

The side structure S whose relative position is determined by the side structure restricting jig and the parts restricting jig, and the duct Rb, the front roof rail Rc, and the rear roof rail Rd, which are laterally bridged between the side structures S, have the following structure. In the component welding step (h), welding is performed by a welding device such as the welding robot 11.

In the subsequent component restricting jig retracting step (i), the clamp is opened, the transport hoist is contracted to raise the component support portion, and the duct Rb, the front roof rail Rc,
After removing the rear roof rail Rd and the like from the component support portion and moving the component regulating jig along the transport rail, it is returned to the original position on the line side of the transport rail 10 in the direction perpendicular to the next component loading. Be prepared and wait.

Following the evacuation of the parts regulation jig, the roof panel regulation jig which supports the roof panel by the clamp of the roof support portion in the roof panel loading step (j) is moved from the line side along the transport rail 10 to the main jig base. 6 Carry it to the upper side, and further lower the roof panel support portion by the extension of the carrier hoist to carry in the roof panel.

Subsequently, in the roof panel positioning step (k), the roof locating jig and the side structure regulating jig are fitted by fitting the regulating locate pin of the roof panel regulating jig and the regulating hole provided on the upper side of the side structure regulating jig. The relative positioning with respect to the tool 4 is performed, and it fixes by the clamp between each other.

Next, in the roof panel welding step (l), the welding device 11 is installed between the side structure and the front roof rail Rc, the rear roof rail Rd, and the roof panel Ra, which are relatively positioned by the side structure regulating jig and the roof panel regulating jig. Welded by.

Next roof panel control jig retracting step (m)
At, the clamps are opened and the roof hoist is lifted by the transfer hoist to separate from the roof panel.
Further, after moving the roof panel restricting jig along the transport rail, it is retracted to the original position on the line side in the direction perpendicular to the transport rail 10.

In the subsequent side structure restricting jig retracting step (n), the clamp is released to release the side structure S from the side structure restricting jig 4, and the side structure restricting jigs 4 facing each other by the cylinder piston device 4c are mutually opposed. Separate them and return to the original retracted position.

In the vehicle unloading step (o), the main portion of the vehicle body thus formed is moved by releasing the projecting piece 2e provided at the lower portion of the center structure regulation carriage 2 from the jig carriage positioning lock 8. The center structure regulating jig carriage 2a, and hence the automobile main body portion B, is carried out to the center structure mounting position by the device.

By repeating the above steps in sequence, the main body of the vehicle body is assembled one after another, and in the subsequent steps, the main body of the vehicle body is subjected to spot welding and the predetermined body panel is joined to assemble the automobile body. ..

[0046]

According to the method and apparatus for assembling a vehicle body according to the present invention described above, the body members that are the main parts of the vehicle body on the same stage and that determine the assembling accuracy of the main vehicle body are mutually controlled by the respective restriction jigs. Since they are joined by welding while being positioned and fixed, a high-quality automobile body with uniform vehicle body assembly accuracy and no variation can be obtained, and the miniaturization of the entire assembly apparatus can be expected.

[Brief description of drawings]

FIG. 1 is an overall side view showing an embodiment of an automobile body assembly apparatus according to the present invention.

FIG. 2 is an enlarged view of a part II in FIG. 1 showing a side surface of a center structure restricting jig in this embodiment.

FIG. 3 is an enlarged view of a part III in FIG. 1 showing a side surface of a main part of a main body assembly stage in the present embodiment.

FIG. 4 is a plan view of FIG. 3 showing a main part plane of a vehicle body main part assembly stage in the present embodiment.

5 is an enlarged view of a V portion in FIG. 1 showing a side surface of the side structure loading device in the present embodiment.

FIG. 6 is a side view of a roof structure restricting jig in this embodiment.

FIG. 7 is a flowchart illustrating an embodiment of a method for assembling an automobile according to the present invention.

FIG. 8 is a flow chart for explaining another embodiment of the automobile assembling method according to the present invention.

[Explanation of symbols]

 1 Body Assembly Device 2 Center Structure Restriction Jig 3 Side Structure Loading Device 4 Side Structure Restriction Jig 11 Welding Robot (Welding Equipment) A Main Body Assembly Stage B Main Body C Center Structure R Roof Structure Ra Rail Panel Rb Duct Rc Front roof rail Rd Rear roof rail S Side structure

Claims (4)

[Claims] 1. A method of assembling an automobile body by a main body assembly stage provided on an assembly line, wherein a center structure is positioned and mounted on a center structure regulating jig to a predetermined position of the main body assembly stage. Center structure carry-in process of carrying in, side structure carry-in process of carrying in the side structure to the body main part assembling stage by the side structure carry-in device, and the received side structure is received by the side structure regulating jig and the body main part assembling stage Side structure positioning step for positioning and fixing the center structure restricting jig and the side structure restricting jig positioned at the relative position between the center structure and the side structure, and the center structure restricting jig And a side structure welding step of welding and connecting the center structure and the side structure positioned by the side structure restricting jig, a roof structure loading step of transferring the roof structure to the vehicle body main part assembly stage by the roof structure restricting jig, A roof structure positioning step of positioning and fixing a side structure restricting jig and a roof structure restricting jig positioned on an assembly stage of a main part of a vehicle body for relative positioning between the side structure and the roof structure, and a side structure restricting jig and A method for assembling an automobile body, comprising a roof structure welding step of welding and joining a side structure and a roof structure, which are positioned and fixed by a roof structure restriction jig. 2. A method for assembling an automobile body by a main body assembly stage provided on an assembly line, wherein a center structure is positioned and mounted on a center structure regulating jig to a predetermined position of the main body assembly stage. Center structure carry-in process of carrying in, side structure carry-in process of carrying in the side structure to the body main part assembling stage by the side structure carry-in device, and the received side structure is received by the side structure regulating jig and the body main part assembling stage Side structure positioning step for positioning and fixing the center structure restricting jig and the side structure restricting jig positioned at the relative position between the center structure and the side structure, and the center structure restricting jig And a side structure welding process for welding and joining the center structure and the side structure positioned by the side structure restricting jig, and at least one part of the duct, the front roof rail and the rear roof rail is assembled by the part restricting jig to the main body main part assembly stage. Relative to the side structure and the parts carried in by the parts carrying-in step, by positioning and fixing the side structure restricting jig and the parts restricting jig positioned on the main body assembly stage A component positioning step for positioning, a side structure regulation jig and a component welding step for welding and joining the side structure positioned and fixed by the component regulation jig and the carried-in component, and a roof panel by a roof panel regulation jig. Main body Roof panel carrying-in step of carrying in the part assembly stage, and positioning and fixing the side structure restricting jig and the roof panel restricting jig located in the main body assembly stage of the vehicle body for relative positioning between the side structure and the roof panel. A method of assembling an automobile body, comprising: a roof panel positioning step; and a side structure restriction jig and a roof panel welding step of welding and bonding a side structure positioned and fixed by a roof panel restriction jig and a roof panel. 3. A vehicle body main part assembly stage provided on an assembly line, a center structure restricting jig for positioning and mounting a center structure to carry it into a predetermined position of the vehicle body main part assembly stage, and a side structure for the vehicle body main part. A side structure carry-in device for carrying in the assembly stage and a side structure carried in by the side structure carry-in device and positioned and fixed to a center structure restricting jig located at the main body assembly stage to form a center structure and a side structure. Carrying in the side structure regulation jig, which is arranged on the assembly stage of the main part of the vehicle body that performs relative positioning between the roof structure and the assembly stage of the main part of the vehicle body,
A roof structure regulating jig that positions and fixes the side structure regulating jig to perform relative positioning between the side structure and the roof structure, the center structure regulating jig, the side structure regulating jig, and the roof structure regulating jig. A method for assembling an automobile body having a center structure, a side structure, and a roof structure, which are positioned relative to each other by welding, for welding and joining the mutual to each other. 4. A vehicle body main part assembly stage provided on an assembly line, a center structure restricting jig for positioning and mounting a center structure and carrying the center structure to a predetermined position of the vehicle body main part assembly stage, and a side structure for the vehicle body main part. A side structure carry-in device for carrying in the assembly stage and a side structure carried in by the side structure carry-in device and positioned and fixed to a center structure restricting jig located at the main body assembly stage to form a center structure and a side structure. Between the side structure regulating jig arranged on the main body assembly stage of the vehicle body and at least one of the duct and the roof rail are carried into the main body assembly stage, and the side structure regulation jig is installed. With ingredients A parts regulation jig that performs relative positioning and fixing to perform relative positioning between the side structure and the above-mentioned components that have been carried in, and a roof panel that has been carried in to the main body assembly stage and is also positioned and fixed relative to the side structure regulation jig. Then, the roof panel restricting jig that performs relative positioning between the side structure and the roof panel, and the center structure restricting jig, the side structure restricting jig, the component restricting jig, and the roof panel restricting jig are relatively positioned. An apparatus for assembling an automobile body, comprising: a center structure, a side structure, and a welding device that welds and connects the carrying-in-positioned part and the roof panel.