JPH0633051B2 - Positioning device for car body assembly machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positioning device for mutually positioning a vehicle body, parts, equipment, etc. in a vehicle body assembly machine for assembling parts, equipment, etc. on a vehicle body such as an automobile.

2. Description of the Related Art Generally, a car body assembly machine suspends a car body with a hanger, transfers the car body above the car body assembly machine, and positions assembly parts and equipment to the car body at appropriate positions. ,
It is common to work to assemble equipment and the like.

In this positioning work, the operator visually moves the floating table in a horizontal direction so that the guide pin installed on the floating table of the vehicle body assembly machine can be inserted into the gauge hole previously drilled at the predetermined position of the vehicle body. It was adjusted and a guide pin was inserted into the gauge hole for positioning.

As a means for facilitating this positioning work, a means disclosed in, for example, Japanese Patent Laid-Open No. 57-107969 has been proposed.

That is, a cradle, which is a floating table, is installed on a trolley via an airbag. Using the fact that it is very easy to move the pedestal in a horizontal plane when the airbag is inflated with the parts and devices placed on the pedestal and the pedestal is floated, Is a means for visually adjusting the pedestal in the horizontal direction so that the parts, devices, etc. on the pedestal are positioned so as to be positioned at predetermined mounting positions on the vehicle body.

Problems to be Solved by the Invention However, in all of the conventional positioning means, the workability is high because the operator has to visually and manually adjust the heavy floating table on which the parts and equipment for assembly are mounted. There was a problem of being bad.

The present invention has been made in view of the above points, and an object thereof is to enable automatic positioning of assembly parts, devices, and the like with respect to a vehicle body, improve workability, and provide an inexpensive product.

Means for Solving the Problems A positioning device for a vehicle body assembly machine according to the present invention moves a floating table in a plane provided with a device for mounting parts, devices, etc. on a vehicle body via floating support means on a device base. Freely installed, and a vertical drive means for moving and adjusting the floating table in the x direction in the plane between the floating table and the apparatus base, and a horizontal driving means for moving and adjusting in the y direction in the plane. And a vehicle body position detection sensor for detecting an appropriate position of the vehicle body and controlling and positioning the vertical driving means and the horizontal driving means on the floating table.

Operation With such a configuration, the floating table is moved in the plane by the vertical driving means and the horizontal driving means with respect to the vehicle body conveyed by the hanger transfer device or the like on the vehicle body assembly machine, and the vehicle body is moved to the floating table. By stopping the vertical drive means and the horizontal drive means at a position compatible with the mounting device such as the above parts and equipment,
It has the function of automatically enabling positioning between the vehicle body assembly machine and the vehicle body.

Embodiment An embodiment of a positioning device for a vehicle body assembly machine according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view of a vehicle body assembly machine for mounting a fuel tank on a vehicle body, FIG. 2 is a plan view thereof, and 1 is a body of the vehicle body assembly machine.

The car body assembly machine 1 is movably installed on a pair of rails 2 and 2 laid in a manufacturing factory. The device base 3 of the car body assembly machine 1 travels on the rails 2 and 2. Wheels 4, 4, 4, 4 are provided for this purpose. A positioning device is installed in the car body assembly machine 1. Therefore, a plurality of ball bearings 6 as floating support means are provided on the upper plate 5 of the device base 3 as shown in a cross section in FIG. The floating table 7 is rotatably supported on the ball bearing 6 and placed on the ball bearing 6 so as to be movable in a plane.

Further, as shown in FIG. 2, a floating cylinder portion 8 is installed between the floating table 7 and the device base 3 as one of vertical driving means of the floating table 7 at one side portion in the vertical direction, A pair of elastic support parts 9, 9 are installed at positions on both sides of the extension line of the floating cylinder part 8 on the other side part.

As shown in FIG. 3, the floating cylinder 8a expands and contracts the rod 10 in the arrow x direction by air pressure, and further includes a brake device that can fix the rod 10 at an arbitrary position where the rod 10 extends. In addition, the tip end portion of the rod 10 is connected to the guide drive rod 1 through the connecting support plate 11.
It is connected to 2. This guide drive support rod 12 is a slider 1
It is inserted through 3 and guided and supported so as to be movable in the direction indicated by arrow x. Further, one end of a link plate 14 is pivotally attached to the tip of the guide drive support rod 12 by a shaft pin 15. Further, the other end of the link plate 14 is attached to the slider support portion 16 installed at the end of the floating table 7 by an arrow y in FIG.
Install so that it can slide in the direction shown in.

Further, as shown in FIG. 4, the elastic support portion 9 has a slide base 18 installed on a support plate 17 projecting from the end of the apparatus base 3.
The slide rod 19 is slidably inserted into the guide through hole of the slide rod 19, the compression coil spring 20 is inserted into the tip portion of the slide rod 19, and the hook-shaped fastener 21 is fixed to the tip of the slide rod 19. The slide coil 19 is always biased in the direction of arrow A by the compression coil spring 20 installed between the hook and the clasp 21. Also,
A rolling element 22 is axially attached to the hook-shaped fastener 21.

The rolling element 22 rolls while being biased by the compression coil spring 20 to the side surface of the rectangular receiving stand 24 projecting downward from the lower end of the receiving plate 23 installed at the end of the floating table 7, and is always floating. The table 7 is urged in the arrow A direction where the floating cylinder 8 is located.

Further, as shown in FIG. 2, the floating table 7
As a lateral driving means for adjusting the movement in the plane indicated by the arrow y in the figure, a floating cylinder portion 25 is installed between the lateral side of the floating table 7 and the device base 3. The pair of elastic support parts 26, 26 are installed at positions on both sides of the extension part of the floating cylinder part 25 on both sides.

The configuration of the floating cylinder portion 25 is the same as that of the floating cylinder portion 8 shown in FIG. 3 described above, and is mounted between the floating table 7 and the device base 3 in the same manner as described above.

Further, the elastic support portion 26 is also configured in the same manner as the elastic support portion 9 shown in FIG. 4 described above, but its rolling element 27 rolls against the side end portion of the floating table 7 with a biasing force in the direction of arrow B, The floating table 7 is constantly urged in the direction of the floating cylinder portion 25.

In this way, on the floating table 7 mounted on the apparatus base 3, a work table 29 for mounting a fuel tank 28 as a component to be assembled on the vehicle body, a device, etc. at a predetermined position is installed, and the work table 29 is installed. A nut runner 31 for mounting the fuel tank 28 on the platform 29 to the vehicle body 30.
In this example, 7 are installed.

Further, a vehicle body position detection sensor 32 is installed on the floating table 7, which includes a first positioning roller 34, a second positioning roller 35, and a third positioning roller 34 on a support plate 33 as illustrated. An alignment roller 36 is provided.

The first, second and third alignment rollers 34, 35,
Reference numeral 36 denotes a roller 38 provided with a sensor for detecting contact with the vehicle body 30 rotatably mounted on the free end of a shaft rod 37 projecting from the abutment plate 33. The alignment rollers 34 are provided on the front corner protrusions of the abutment plate 33, the second alignment rollers 35 are provided on the protrusions between the abutment plates 33, and the third alignment rollers 36 are on the abutment plate 33 side. It is provided at the side end of the direction.

The abutment plate 33 is provided on the lifting support rod 41 of the elevator 40.
It is attached to the upper end of and is configured to be lifted and lowered by driving the elevator 40.

Further, as shown in FIG. 1, the floating table 7
A guide pin for fixing the vehicle body 30 on the vehicle body assembly machine 1 after the vehicle body 30 is suspended and transferred by a hanger (not shown) on the vehicle body assembly machine 1 and is positioned at an appropriate position with respect to the vehicle body assembly machine 1. Four devices 42 are installed.

The guide pin device 42 is configured such that a guide pin rod 43 having a conical tip portion can be moved up and down, and the guide pin rod 43 is raised and four guide holes are pre-drilled at predetermined positions on the bottom of the vehicle body 30. Positioning reference hole 44
The vehicle body assembly machine 1 and the vehicle body 30 suspended by the hanger are temporarily fastened and fixed.

With respect to the vehicle body assembly machine 1, when the vehicle body 30 is positioned at an appropriate position, the fuel tank 28 on the work table 29 matches the mounting position of the vehicle body 30.

Next, the operation of the vehicle body assembly machine of the present example configured as described above will be described with reference to the schematic plan views of FIGS. 5 and 6.

FIG. 5 illustrates a state in which the vehicle body 30 suspended by a hanger (not shown) is transferred onto the vehicle body assembly machine 1.
Reference plane 4 indicated by a chain double-dashed line which is a vertical wall surface of the vehicle body 30
5 is each roller 34, 35, 3 of the vehicle body position detection sensor 32.
Improper position away from 6.

In order to perform the alignment from this state, first, the vertical driving means for moving the floating table 7 in the direction indicated by the arrow x in the drawing is operated. That is, the floating cylinder 8a is driven to smoothly draw the floating table 7 on the ball bearing 6 in the direction of arrow C.

Then, the reference surface 45 of the vehicle body 30 causes the first alignment roller 3 to move.
4 and the second alignment roller 35 are brought into contact with each other to be positioned in the x direction, and the floating cylinder 8a is braked by receiving signals from the first and second alignment rollers 34 and 35 which detect the positioning. Stop driving.

During the operation of moving the floating table 7, the floating table 7 is in a so-called three-point support state by the floating cylinder 8a and the pair of elastic support parts 9, and is slid by the slider support part 16 of the floating cylinder part 8. Since the motion is given while rotating and rotating, the floating table 7 is not twisted,
The moving operation can be performed with good balance.

Further, after that, the floating cylinder portion 25, which is a lateral driving means, is driven, and in cooperation with the pair of elastic support portions 26, 26, the floating table 7 is well balanced without being twisted like the operation of the floating cylinder portion 8 described above. Is drawn in the direction of arrow D, which is the horizontal direction in the plane. Then, the third alignment roller 36 causes the reference surface 45 of the vehicle body 30 to move.
Is positioned in the y direction by contact with the
Upon receiving a signal from the positioning roller 36, the floating cylinder 8a is braked and its driving is stopped.
In this way, as shown in FIG. 6, the first, second, and third alignment rollers 34, 35, 36 are simultaneously in contact with the reference surface 45, and the floating cylinder portions 8, 2
The brake is locked on the vehicle body 5, and the alignment of the vehicle body 30 with the floating table 7 of the vehicle body assembly machine 1 is completed.

Next, as shown in FIG. 1, the guide pin device 4 is inserted into each of the reference holes 44 of the vehicle body 30 aligned at the proper positions.
2 is driven to insert and fasten each guide pin rod 43, and temporary fixing is performed, and the positioning work is completed.

After this, the fuel tank 2 on the work table 29 of the vehicle body assembly machine 1
8 is placed in a predetermined position of the vehicle body 30, and the fuel tank 28 is attached to the vehicle body 30 by the nut runner 31.

After this mounting work is completed, the first of the vehicle body position detection sensor 32,
The second and third alignment rollers 34, 35, 36 and the guide pin rod 43 of the guide pin device 42 are lowered, the vehicle body is separated from the vehicle body assembly machine 1, and the floating cylinder portions 8, 25 are driven to float. The table 7 is returned to the initial waiting position and the next vehicle body 30 is transferred.

In this way, the positioning device of the vehicle body assembly machine 1 causes the vehicle body 3 to move.
Since the positioning work of 0 can be automatically performed without manual labor, the workability of the work of mounting the fuel tank 28 on the vehicle body 30 can be improved.

According to the positioning device of the vehicle body assembly machine of the invention, the floating table is movably supported on the device base in a plane, and the floating table is supported by the vertical driving means and the horizontal driving means. , The movement adjustment is possible in the plane, and the vehicle body position detection sensor installed on this floating table controls the vertical drive means and the horizontal drive means to automatically perform the positioning work between the vehicle body assembly machine and the vehicle body. Therefore, there is an effect that the work process of the positioning work by the conventional worker can be omitted, the workability can be improved, and the inexpensive product can be provided.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a positioning device for a vehicle body assembly machine according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is an enlarged partial sectional side view showing a floating cylinder portion which is a main part thereof. FIG. 4 is an enlarged side view showing an elastic supporting portion which is a main part thereof, and FIGS. 5 and 6 are schematic plan views for explaining the operation thereof. 1 ... Car body assembly machine, 3 ... Device base, 6 ... Ball bearing, 7 ... Floating table, 8 ... Floating cylinder part, 8a ... Floating cylinder, 9 ... Bullet support part, 22 ... Rolling Child, 25 ... Floating cylinder part, 26 ... Bullet support part, 27 ... Roller,
28 ... Fuel tank, 29 ... Work table, 30 ... Car body, 32 ... Car body position detection sensor, 34 ... First alignment roller, 35 ... Second alignment roller, 36 ... Third
Positioning roller, 42 ... Guide pin device, 45 ... Reference plane

Claims (1)

[Claims] 1. A floating table (7) equipped with a device for mounting parts, devices, etc. on a vehicle body (30) through floating support means on a device base (3) is movably installed in a plane. , The floating table (7) and the device base
Vertical driving means and lateral driving means for moving and adjusting the floating table (7) in a plane are installed between the floating table (3) and the floating table (7), and the properness of the vehicle body (30) on the floating table (7). Body position detection sensor for detecting position (32)
Is installed, and the floating table (7) is moved and adjusted by the vertical driving means and the horizontal driving means,
The vehicle body position detection sensor (32) detects that the vehicle body (30) has reached an appropriate position with respect to the floating table (7), and controls the vertical direction driving means and the lateral direction driving means, A positioning device for a vehicle body assembly machine, characterized in that positioning is performed.