JPS64257Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to an automobile main body assembly device.

(Prior art) Conventionally, the main body was assembled using component parts 10a, 10b, 10c, 10 as shown in FIGS.
A worker 13 assembles the underbody 10 consisting of components d using the underbody assembly jig 8, and a worker 3 assembles the left and right side members 1 consisting of the component parts 1a, 1b, 1c, and 1d using the side member assembly jig 8. 2, remove the underbody 10 from the underbody assembly jig 8 and attach it to the underbody fixing jig 17 on the main body assembly device 15.
The side member 1 is fixed by the underbody fixing member 7, and the side member 1 is removed from the side member assembling jig 2, and the side member fixing member 6 is attached to the side member fixing jig 18 on the raising device 9 of the main body assembling device 15. After fixing, the raising device 9 was rotated about the rotation shaft 11 in the direction of arrow P to assemble the side member 1 and the underbody 10.

In the above work, side member assembly jig 2
The and side member fixing jig 18 require high dimensional accuracy due to the nature of the component parts of the side member 1, but it is difficult to manufacture to eliminate errors between the two, and a dimensional error of about 0.2 to 0.5 mm will inevitably occur between the two. The current situation is that Furthermore, when the side member 1 is removed from the assembly jig 2, it may be deformed and the dimensions may be out of order. For this reason, if an attempt is made to eliminate errors between the two as much as possible, the manufacturing cost of the main body increases, and even then, there are drawbacks such as poor workmanship of the main body.

(Purpose of the invention) This invention makes it extremely easy to assemble the side member 1 to the underbody 10, and therefore provides a main body assembly that reduces the manufacturing cost of the main body and always provides a main body with excellent workmanship. The purpose is to provide equipment.

(Structure of the invention) This invention is an automobile main body assembly device that forms a hole in the floor surface, provides a base in this hole,
An underbody fixing jig for fixing the underbody is installed in the center of this base, and side member assembly jigs for assembling the side members are placed on the left and right sides of the underbody fixing jig, which approaches and separates from the underbody fixing jig on the rail. In addition,
rotating a raising device that places and fixes the side member assembly jig on which the side members assembled on the left and right sides of the underbody fixing jig is placed and stands it up in the direction of the underbody fixing jig; The goal is to create a structure that allows for easy movement.

(Description of Embodiment) Figures 1 and 2 show a first embodiment of this invention. Note that in FIGS. 1 and 2, the same components as in FIGS. 5 and 6 are given the same numbers and their explanations will be omitted. In FIGS. 1 and 2, a rectangular hole 14 is provided in the floor surface 12, and a main body assembly device 15 is installed within this hole 14. An underbody fixing jig 17 is disposed at the center of the base 16 of the main body assembly device 15, and on both left and right sides of the underbody fixing jig 17, raising devices 9 are disposed so as to be rotatable laterally around a rotation axis 11. ing. On the raising device 9 and on the floor 12
Rails 5a and 5b of the same gauge are laid respectively. Rails 5a and 5b are in contact at 5c. The side member assembly jig 2 includes a rail 5a,
It can be moved on wheels 4 on 5b.

In the above configuration, the underbody 10 is assembled by the underbody assembly worker 13 using the underbody assembly jig 8.
The underbody fixing member 7 is then fixed by the underbody fixing jig 17 on the main body assembly device 15. On the other hand, the side member 1 is attached to the rail 5 by the side member assembling worker 3.
It is assembled using the side member fixing member 6 in the side member assembly jig 2 on b, and is fixed to the same assembly jig 2 as it is. Next, the side member assembly jig 2 is transferred to a predetermined position on the rail 5a of the raising device 9 and fixed to the raising device 9 by a device (not shown). Next, the raising device 9 is rotated about the rotation shaft 11 toward the underbody 10, and the side members 1 are assembled on the left and right sides of the underbody 10. The assembled main body is removed from the underbody fixing jig 17, and the raising device 9 is rotated to its original position. As a result, the main body is sent to the next assembly process. The side member assembly jig 2 is further transferred to its original position on the rail 5b of the floor surface 12, where the side member 1 is again assembled by the worker 3. Note that the side member assembly jig 2 includes the underbody 10 and parts other than the side member 1 (roof,
A fixing member necessary for assembling a cowl, etc.) can also be provided. Also, since the side member 1 and the underbody 10 are assembled automatically by the main body assembly device 15, during this time the next underbody 10 is assembled by the underbody assembly jig 8 during the side member assembly work. If person 3 does this, work efficiency will improve.

3 and 4 show a second embodiment of this invention. Note that in FIGS. 3 and 4, the same components as in the first embodiment are given the same numbers and their explanations will be omitted. In the second embodiment, rails 25, 25 are provided on the base 16 of the main body assembly device 15 in the lateral direction (direction perpendicular to the underbody 10) on both sides of the underbody fixing jig 17. A truck 20 having wheels 24 is placed on the rail 25, and a raising device 9 is supported on the truck 20 so as to be rotatable in the lateral direction by a rotation shaft 11. Tool 2 is attached. The side member 1 is assembled using a side member assembling jig 2 on a truck 20 located away from an underbody fixing jig 17. Next, the rear raising device 9, which has fixed the truck 20 close to both sides of the underbody fixing jig 17, is rotated to assemble the underbody 10 and the side member 1. The main body that has been assembled is removed from the underbody fixing jig 17 and the side member assembly jig 2 and transferred to the next assembly process. However, unless the side member assembly jig 2 is rotated or separated from the underbody fixing jig 17, the main body cannot be sent to the next process. Note that the raising device 9 may be rotated after the side member 1 has been assembled using the side member assembly jig 2, and then the trolley 20 may be moved in the direction of the underbody fixing jig 17.

(Effect of the invention) As described above, this invention allows the side member assembly jig 2 to approach the underbody fixing jig 17 of the underbody assembly device 15 on the rail while the side member 1 is assembled.
When assembling the side member 1 to the underbody 10, there is no dimensional deviation in the side member 1, so assembly is easy.Also, only one side member fixing member 7 is required, which reduces the manufacturing cost of the main body assembling device. This has a great effect on reducing body production costs. Also, a main body with excellent workmanship can be obtained. Furthermore, since this device has a simple configuration, it has the advantage that it can be easily installed not only in new installations but also in the improvement of existing devices.

[Brief explanation of the drawing]

FIG. 1 shows a plan view of a first embodiment of this invention, and FIG. 2 shows a front view thereof. FIG. 3 shows a plan view of the second embodiment, and FIG. 4 shows a front view thereof. FIG. 5 shows a plan view of a conventional main body assembly device, and FIG. 6 shows a front view thereof. 1...Side member, 2...Side member fixing jig, 7...Underbody fixing member, 9...
... Raising device, 10... Underbody, 17...
Underbody fixing jig.

Claims (1)

[Scope of utility model registration request] A hole is formed in the floor surface, a base is provided in the hole, an underbody fixing jig is provided in the center of the base to fix the underbody, and a side member assembly jig is provided to assemble the side members on the left and right sides of the underbody fixing jig. The side member assembling jig has a tool disposed on a rail so as to be close to and detachable from the underbody fixing jig, and further includes side members assembled on the left and right sides of the underbody fixing jig. An apparatus for assembling a main body of an automobile, comprising a rotatable raising device for placing and fixing the underbody and raising it in the direction of the underbody fixing jig.