JPS6338991Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an assembly jig for automobile bodies.The purpose of the invention is to enable switching and positioning of side members of multiple car models using a single jig, thereby increasing the productivity of car body assembly. The aim was to improve performance and reduce equipment costs.

In assembling a car body, left and right side members and an underbody are conventionally assembled using a pair of pivoting or sliding members that position the left and right side members and a lifting device that positions the underbody. In this case, when assembling different types of vehicles, it is necessary to change the positions of the positioning members of the left and right side members to correspond to the different types of vehicles, which poses a problem in improving productivity.

In view of the above-mentioned conventional problems, the present invention provides a plurality of side member positioning members corresponding to a plurality of different vehicle models in the shape of an impeller, and uses rotary indexing to quickly change setups corresponding to the vehicle models to be assembled. The present invention provides an improved jig that can be used to perform the following tasks.

Embodiments of the present invention will be described below with reference to the drawings. 1 is a fixed base. A pair of sliding tables 2a and 2b are installed on the left and right sides of the fixed base 1, which are operated by a feeding mechanism (not shown). Sliding table 2
Columns 3a, 3b are erected on the columns 3a, 2b, and rotating bodies 4a, 4b having a plurality of impeller-like arms are rotatably indexed by rotating shafts 5a, 5b. supported. A workpiece pedestal 6 is provided on each arm of the rotating bodies 4a, 4b so as to be movable forward and backward.

Further, a work lifting device 7 is installed on the fixed base 1 between the left and right rotating bodies 4a and 4b.

The assembly jig according to the present invention has left and right side members W ₁ and W ₁ of the vehicle body W on the left and right workpiece pedestals 6.
are set respectively, and an underbody _W2 is set in the work lifting device 7. When setting the left and right side members W ₁ , W ₁ , rotate the workpiece pedestal 6 corresponding to the vehicle model to be assembled to position A in the drawing, and use the conveyor to move the workpiece in the assembly direction as shown by the imaginary line in the drawing. The side members W ₁ and W ₂ that are transported in the horizontal direction perpendicular to the workpiece table 6 are fixedly set on the workpiece pedestal 6. Thereafter, the side members W 1 and W 1 are rotated to position B in the drawing, the set side members W ₁ and W ₁ are erected from the horizontal state to the assembled state, and the workpiece pedestals 6 are mutually slid to the intermediate point, and the underbody on the lifting device 7 is W ₂ lowers the lifting device 7 to the same plane as the horizontal plane of the workpiece pedestal 6 which has been slid to the intermediate point, and positions it at the assembly position of the side members W ₁ and W ₁ . Further, the work holder 6 is slid from the intermediate position to a predetermined final position where it should be assembled, and the underbody W ₂ on the lifting device 7 is assembled by welding or the like. After assembly, the lifting device 7 rises to carry out the assembled car body W, and the workpiece pedestal 6 is returned to its original position, rotated back to position A in the drawing at the original position, and moved to the next side. Waiting for members W ₁ and W ₁ to be brought in.

If the car model is changed, the rotating bodies 4a and 4b are indexed and rotated so that the cradle equipped with the workpiece clamper corresponding to the car type is operated, and the positions of the columns 3a and 3b are adjusted to correspond to the car model. Sliding table 2
Change by moving forward and backward of a and 2b.

As described above, according to the present invention, the jig that holds the side members to be assembled and sets them at the assembly position is an impeller-shaped rotating body that can accommodate multiple types of side members, and the rotation index is adjusted as necessary. Since the jig is positioned in the same position, it is possible to quickly change the jig setup when assembling various side members irregularly, and a single jig device can assemble multiple types of side members. It has the advantage of being able to perform attachment with high efficiency, improving productivity and reducing equipment costs.

[Brief explanation of the drawing]

The drawing is a front view of the present invention. 1...Fixed base, 2a, 2b...Sliding base, 3
a, 3b...Column, 4a, 4b...Rotating body, 5
a, 5b...Rotating axis, 6...Work holder, 7...
Lifting device, W... work, W ₁ ... side member,
W ₂ ...underbody.

Claims (1)

[Scope of utility model registration request] A pair of left and right sliding stands facing each other are provided on a fixed base on a horizontal plane so as to be movable forward and backward, a column is set upright on this sliding stand, and a rotating body having a plurality of impeller-like arms is divided into this column. A workpiece holder supporting a side member of an automobile body is provided on each arm of this rotating body so as to be movable forward and backward in the same direction as the moving direction of the sliding table. This is an assembly jig for an automobile body, which is equipped with a work lifting device that moves the underbody up and down.