JP2539073B2 - Body panel positioning method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is suitable for use in positioning a vehicle body panel at a predetermined assembly position by bringing positioning jigs into contact with a plurality of portions of the vehicle body panel. The present invention relates to a method of positioning a vehicle body panel.

(Prior Art) When assembling a vehicle body of an automobile, usually, a plurality of vehicle body panels are respectively positioned at predetermined assembly positions, the relative positional accuracy of those vehicle body panels is obtained, and the plurality of vehicle body panels are positioned in that position. A method of welding and joining the vehicle body panels to each other is adopted, and a conventional method of positioning the vehicle body panel is, for example, a method using a pivoting pillar device.

This pivoting pillar device is used for positioning the body side, which is a type of vehicle body panel, at a vehicle body assembly station on a vehicle body assembly line, and a pivoting pillar having a large number of positioning jigs attached to one surface is used. , This is also placed on the left and right of the positioning jig for positioning the floor main, which is also a type of vehicle body panel, so that the positioning jigs face each other, and the pivoting pillars are rocked with the lower end as a fulcrum. In the conventional positioning method using such a pivoting pillar device, first, the left and right pivoting pillars are tilted, and the left and right body sides on the jigs are directed obliquely upward to the inside of the vehicle body. And place them in a tilted position, and clamp the body side with these jigs in the After the floor main is loaded and positioned on the main positioning jig, the pivoting pillars are raised to the specified positions to move many positioning jigs supporting each body side simultaneously in the same direction, The body sides on the left and right sides of the main body are pressed simultaneously by a large number of positioning jigs at the same time to position them at a predetermined assembly position.

By the way, the applicant of the present application has previously proposed, in Japanese Patent Application No. 63-143478, etc., that a frame surrounding a vehicle body assembly place is installed in a vehicle body assembly station, and a large number of positioning coordinate robots are provided by a large number of rectangular coordinate robots provided in the frame. We propose a car body assembly device that moves a tool and a welding gun to a predetermined position, carries them into the car body assembly place, positions a plurality of car body panels that are roughly arranged at a predetermined assembly position, and spot welds each other in the positioned state. In order to carry in a plurality of vehicle body panels to the vehicle body assembling place in the vehicle body assembling apparatus, further, in Japanese Patent Application No. 1-36329, a plurality of supporting members are provided on three shuttle bars, respectively. A method for loading a body panel in which a plurality of body panels placed on a support member are collectively loaded into the body assembly location by reciprocating movement of those three shuttle bars is provided. is suggesting.

(Problems to be Solved by the Invention) However, the left and right body sides, which are carried into the vehicle body assembly apparatus by the carrying-in method and arranged at a substantially predetermined assembly position, are supported at several places by the supporting member, and Since it is leaning against the floor main that has been carried in between, the body side may have a slight amount of movement from the predetermined assembly position to the multiple locations to be positioned by the positioning jig. Positional deviation tends to occur. If a plurality of positioning jigs are simultaneously moved in the same direction on the body side by the conventional positioning method, the positional deviation of each part is ignored. The positioning jig comes into contact with the part that is displaced from the original position to be positioned,
There is a possibility that the body side may be scratched and scratched, or an excessive force may be applied to cause distortion, and the body may remain in contact with the displaced portion and accurate positioning may not be possible.

The present invention provides a positioning method that advantageously solves this problem.

(Means for Solving the Problem) A method for positioning a vehicle body panel according to the present invention is characterized in that when positioning a vehicle body panel at a predetermined assembly position by bringing a positioning jig into contact with each of a plurality of portions of the vehicle body panel, the respective positioning is performed. A jig is placed on a support member and is positioned approximately at the assembling position with respect to a portion of the vehicle body panel where the jig is positioned. And is brought into contact with the part and then moved to a predetermined position to position the part at the assembling position.

(Operation) According to this method, even if a plurality of parts to be positioned on the vehicle body panel are displaced in different directions with respect to the predetermined assembly position, depending on how they are placed on the support member, Since each positioning jig approaches the position of the jig on the vehicle body panel from the position deviation side according to the position deviation tendency of that part, comes into contact with that part, and then moves to the predetermined position, It is possible to prevent the positioning jig from coming into contact with a portion displaced from the original position to be positioned due to the positional displacement, and therefore, the positioning jig exerts an excessive force to distort or scratch the vehicle body panel. It is possible to prevent the scratches from being scratched, and it is possible to prevent the positioning jig from being left in contact with the displaced portion, and always perform accurate positioning.

According to this method, even if the vehicle body panel is partially supported by the supporting member and is distorted due to its own weight, such as being lowered or twisted, the distortion is corrected in the same manner as in the case of displacement. Therefore, accurate positioning can always be performed from this point as well.

Embodiment An embodiment of the present invention will be described below in detail with reference to the drawings.

1 to 7 are explanatory views showing embodiments in which the method for positioning a vehicle body panel according to the present invention is applied to the positioning of a body side in a vehicle body assembly apparatus provided in a vehicle body assembly station of a vehicle body assembly line.

The vehicle body assembly apparatus here is the same as the Japanese Patent Application No. 63-
It is similar to the device proposed in 143478, and FIG. 9 is a rear view of the vehicle body assembly device, in which 1 is a frame surrounding the vehicle body assembly station of the vehicle body assembly station. Is a shuttle bar type transfer device for loading a plurality of vehicle body panels into the vehicle body assembly location, and 3 is a vehicle body assembled in the vehicle body assembly location.

Here, the shuttle bar type transfer device 2 comprises three shuttle bars, a central shuttle bar 4 and left and right shuttle bars 5, and is supported by air cylinders attached to the respective shuttle bars 4 and 5. And a supporting member 6 that can be moved up and down between a stand-by position and a stand-by position below it.
A support member 6 located at the support position of the central shuttle bar 4
The floor main 7 is placed on the upper side, and the left and right body sides 8 are placed on the supporting members 6 positioned at the supporting positions of the left and right shuttle bars 5, and further on the supporting members 6 and the left and right body sides 8 Other vehicle body panels are placed on the top etc., and those vehicle body panels are collectively brought into the above vehicle body assembly place by the forward movement of the three shuttle bars 4,5, and the vehicle body assembly device installs those vehicle body panels. After positioning, each support member 6 is lowered to the standby position, and then the three shuttle bars 4 and 5 are moved backward.

At the time of carrying in, the left and right body sides 8 on the left and right shuttle bars 5 are slightly leaning against the floor main 7 of the central shuttle bar 4, and are positioned at the approximate assembly position with respect to the floor main 7. are doing.

Further, here, a large number of rectangular coordinate type robots 9 are provided on the frame 1 as shown in FIGS. 10 to 12, and one or more wrist parts 9a of each robot 9 have positioning jigs. Locating pin 10 or gauge plate 11 that fits with a predetermined part of the vehicle body panel, or welding gun 12 for spot welding, or jigs and welding guns thereof are combined and attached, and locating pin 10 and gauge plate 11 are attached. A clamp mechanism 13 driven by an air cylinder is combined therewith as required.

In addition to the two normal servomotor-driven linear movement mechanisms combined so that the movement directions thereof are perpendicular to each other, each of the robots 9 has a linear movement mechanism that is perpendicular to the movement direction. A normal servomotor-driven linear movement mechanism combined as described above, or a normal servomotor-driven rocking mechanism combined with the two linear movement mechanisms is provided as required. By moving one or more wrist parts 9a, the positioning jigs 10 and 11 and the welding gun 12 can be moved in the X-axis direction which is the lateral direction of the vehicle body indicated by the arrow X in the figure, and in the vehicle longitudinal direction indicated by the arrow Y in the figure. A certain Y-axis direction (however, in FIG. 9, a direction orthogonal to the paper surface), and if necessary, an arrow Z in the drawing
Can be moved to any position within a certain range in the Z-axis direction, which is the vehicle body vertical direction.

In addition, each robot 9 includes a normal servomotor-driven rotation mechanism 14 and a normal servomotor-driven linear mechanism which are interposed between the positioning jigs 10 and 11 or the welding gun and the wrist 9a as required. By the moving mechanism 15, those positioning jigs 10, 11
The direction of the welding gun 12 and the welding gun 12 can be changed to an arbitrary angle, and the relative positions of the plurality of positioning jigs 10 and 11 can be arbitrarily adjusted.
With this, it is possible to selectively arrange a desired shape of the gauge plates 10 of a plurality of types at a predetermined use position.

Positioning of each vehicle body panel using such a vehicle body assembling apparatus is performed by the method shown in FIGS. 10 to 12.

That is, for the main floor 7, as shown in FIG. 10, the wrists 9a are respectively raised to predetermined positions by a plurality of robots 9 provided on the girder of the frame 1 below the shuttle bar type transport device 2. And those wrists
The locate pin 10 attached to the 9a is positioned at a predetermined position by fitting it into the locate holes of the main floor 7 carried into the vehicle body assembly place.
At this time, by operating the clamp mechanism 13 attached to those wrist portions 9a, the portions around the plurality of locate holes are clamped and securely fixed to the locate pin 10.

As for the left and right body sides 8, as shown in FIG. 11, the wrist portions 9a are moved to predetermined positions by a plurality of robots 9 provided on the girders on the side of the shuttle bar type transfer device 2 of the frame 1, respectively. Locating pins 10 attached to their wrists 9a by moving them inward of the frame 1
Are fitted into the locate holes at a plurality of locations on the body side 8 carried into the vehicle body assembling place, and the gauge plates 11 attached to the wrist portions 9a thereof are fitted at a predetermined plurality of portions on the body side 8, respectively. Are positioned in a predetermined assembly position by, and at that time, the clamp mechanism 13 attached to the wrist portion 9a is operated to clamp a plurality of sites in the vicinity of the gauge plate 11 and securely fix the gauge plate 11 to the gauge plate 11. To do.

The positioning method of this embodiment will be described in detail below by taking the positioning of the body side 8 as an example.

FIGS. 1 (a) to 1 (c) show a method of positioning the sill outer portion 8a of the body side 8, and this positioning is performed by a virtual line in the drawing with respect to a predetermined assembly position where the sill outer portion 8a is shown in the solid line in the drawing. As shown in FIG. 13, considering that the body side 8 as a whole is displaced in the Z-axis direction due to the displacement in the Z-axis direction and the inner side thereof is slightly distorted in the opening direction, As shown in FIG. 1A, the robot 9 as shown in FIGS. 1A and 1B first moves the upper two gauge plates 11 in the X-axis direction from the standby position P1 to the upper position P2 of the sill outer portion 8a. And the lower two gauge plates 11 horizontally in the X-axis direction from the standby position P1 to the lower position P2 of the sill outer portion 8a, and then the upper two sheets so as to respectively approach the sill outer portion 8a. Position the gauge plate 11 from P2 in the specified Z-axis direction Move down to the determined position P3 and move the lower two gauge plates 11 from P2 to the specified Z
The gauge plate 11 is moved up to the axial positioning position P3, and the gauge plates 11 are brought into contact with the upper side and the lower side of the sill outer portion 8a, respectively, thereby correcting the displacement and distortion of the sill outer portion 8a in the Z-axis direction. After that, each gauge plate 11 is horizontally moved in the X-axis direction from P3 to a predetermined X-axis direction positioning position P4 to correct the positional deviation of the sill outer portion 8a in the X-axis direction.

When the positioning of the sill outer portion 8a by the respective gauge plates 11 to the predetermined mounting position is completed as shown in FIG. 1 (b), the sill outer portion 8a is clamped by the clamp mechanism 13 as shown by an arrow in FIG. 1 (c). Clamp the part 8a together with the sill inner part 7a of the floor main 7 and attach them to the gauge plate.
Fix to 11.

2 (a) to (c) show a method of positioning the wheel house outer portion 8b of the body side 8, and this positioning is performed with respect to a predetermined assembly position where the wheel house outer portion 8b is shown by a solid line in the drawing. As shown by the middle phantom line, the robot 9 as shown in FIGS. 14 (a) and 14 (b) considers that the entire body side 8 tends to be slightly lowered due to the displacement in the Z-axis direction. As shown in FIG. 2 (a), first, the gauge plate 11 is horizontally moved in the X-axis direction from the standby position P1 to a position P2 below the wheel house outer portion 8b, and then is moved toward the wheel house outer portion 8b. Gauge plate 11
Is moved up from P2 to a predetermined Z-axis positioning position P3, and its gauge plate 11 is brought into contact with the lower side of the wheel house outer portion 8b, thereby correcting the positional deviation of the wheel house outer portion 8b in the Z-axis direction. After that, the gauge plate 11 is horizontally moved in the X-axis direction from P3 to a predetermined X-axis direction positioning position P4 to correct the positional deviation of the wheel house outer portion 8b in the X-axis direction.

When positioning of the wheel house outer portion 8b to the predetermined assembly position by the gauge plate 11 is completed as shown in FIG. 2 (b), the wheel is clamped by the clamp mechanism 13 as shown by an arrow in FIG. 2 (c). The house outer portion 8b is clamped together with the wheel house inner portion 7b of the floor main 7 to fix them to the gauge plate 11.

3 (a) to (c) show a method of positioning the fender lower outer portion 8c of the body side 8, and this positioning is performed with respect to the predetermined mounting position shown by the solid line in the figure. Considering that as shown by the middle phantom line, it is slightly lowered due to the displacement of the entire body side 8 in the Z-axis direction and tends to be slightly out due to the leaning of the body side 8 on the floor main 7. Then, by the robot 9 as shown in FIGS. 15 (a) and 15 (b), as shown in FIG. 3 (a), first the gauge plate 11 is moved in the X-axis direction from the standby position P1 to the fender lower outer portion 8c. Horizontally move to the lower position P2, then the fender lower outer part 8c
The gauge plate 11 is moved upward from P2 to a predetermined Z-axis positioning position P3 so that the gauge plate 11 is brought into contact with the lower side of the fender lower outer portion 8c. Correct the positional deviation in the axial direction,
After that, the gauge plate 11 is horizontally moved in the X-axis direction from P3 to the predetermined positioning position P4 in the X-axis direction to move the fender lower outer portion.
The procedure is to correct the positional deviation of 8c in the X-axis direction.

When the positioning of the fender lower outer portion 8c to the predetermined mounting position by the gauge plate 11 is completed as shown in FIG. 3 (b), the fender is moved by the clamp mechanism 13 as shown by the arrow in FIG. 3 (c). The lower outer portion 8c is clamped together with the fender lower winer portion 7b of the floor main 7 to fix them to the gauge plate 11.

FIGS. 4 (a) and 4 (b) show a method of positioning the rear fender corner portion 8d of the body side 8, and this positioning is performed by the rear fender corner portion 8d with respect to a predetermined assembly position shown by a solid line in the drawing. Considering that as shown by the line, the body side 8 is slightly displaced toward the rear of the vehicle due to the displacement in the Y-axis direction, and the body side 8 tends to be slightly outside due to the leaning on the floor main 7. Then, the robot 9 as shown in FIGS.
Accordingly, as shown in FIG. 4 (a), first, the gauge plate 11 is horizontally moved in the X-axis direction from the standby position P1 to the rear position P2 of the rear fender corner portion 8d and the rear panel 17 applied to the rear fender corner portion 8d from the outside, Next is the rear fender corner
The gauge plate 11 is horizontally moved in the Y-axis direction from P2 to a predetermined Y-axis direction positioning position P3 so as to approach 8d, and the gauge plate 11 is brought into contact with the rear fender corner portion 8d and the outer side of the rear panel 17, thereby the rear fender. Corner
Correct the position deviation of 8d in the Y-axis direction, and then gage plate
As shown in Fig. 4 (b), the gauge plate 11 is moved to the rear fender corner by horizontally moving 11 in the Y-axis direction from P3 to the predetermined positioning position P4 in the X-axis direction to correct the misalignment in the X-axis direction. This is done by fitting it to the part 8d.

FIGS. 5 (a) to 5 (c) show a method of positioning the side rail portion 8e of the body side 8, and this positioning is performed with respect to the predetermined mounting position shown by the solid line in the figure. As shown by the line, due to the displacement of the entire body side 8 in the Z-axis direction, the body side 8 is slightly lower than the predetermined assembly position, and the body side 8 leans toward the floor main 7 and tends to be slightly inward. In consideration of the fact, the robot 9 as shown in FIGS. 17 (a) and 17 (b) first uses the gauge plate 11 as shown in FIG. 5 (a).
In the X-axis direction from the standby position P1 to the predetermined X of the side rail portion 8e.
The gauge plate 11 is brought into contact with the side rail portion 8e by moving horizontally to a position P2 which is slightly inward of the axial positioning position P4 and slightly lowered, and then moves the gauge plate 11 from P2 to a predetermined Z-axis positioning position P3. The side rail portion 8e is moved upward, thereby correcting the displacement of the side rail portion 8e in the Z-axis direction, and in that state, the side rail portion 8e is indicated by an arrow by the clamp mechanism 13 shown on the lower side in FIG. 5 (c). Clamp it to the gauge plate 11 and then
11 is horizontally moved so as to be pulled back from P3 to the predetermined X-axis positioning position P4 in the X-axis direction to correct the positional deviation of the side rail portion 8e in the X-axis direction.

Then, as shown in FIG. 5 (b), when the positioning of the side rail portion 8e to the predetermined assembly position by the gauge plate 11 is completed, the roof panel 18 is fixed by the clamp mechanism 13 shown on the upper side in FIG. 5 (c). Clamp it as shown by the arrow to secure it to the gauge plate 11.

6 (a) to 6 (c) show a method for positioning the rear fender front portion 8f of the body side 8, and this positioning is performed by the rear fender front portion 8f with respect to a predetermined assembly position shown by a solid line in the drawing. Considering that as shown by the line, the body side 8 leans toward the floor main 7 and tends to be slightly inward, FIG. 18 (a),
As shown in FIG. 6 (a), the robot 9 as shown in FIG. 6 (b) first moves the gauge plate 11 in the X-axis direction from the standby position P1 to the predetermined X-axis positioning position P5 above the rear fender front portion 8f. Move the gauge plate 11 horizontally to a position P2 that slightly goes in, then lower the gauge plate 11 from P2 to P3 so as to approach the rear fender front part 8f, and insert it into the groove part of the rear fender front part 8f, and then the gauge plate.
11 is horizontally moved in the X-axis direction from P3 so as to be pulled back to a predetermined X-axis direction positioning position P4, thereby correcting the displacement of the rear fender front part 8f in the X-axis direction, and then moving the gauge plate 11 from P4. Predetermined Z-axis positioning position
The procedure is carried out by lowering to P5 and bringing the rear fender front portion 8f into contact with the upper side to correct the positional deviation of the rear fender front portion 8f in the Z-axis direction.

When the positioning of the rear fender front portion 8f to the predetermined assembly position by the gauge plate 11 is completed as shown in FIG. 6 (b), the rear fender front is moved by the clamp mechanism 13 as shown by an arrow in FIG. 6 (c). The side of the portion 8f is clamped and fixed to the gauge plate 11 and the rear fender inner portion 7d of the floor main 7.

7 (a) to 7 (c) show a method of positioning the rear fender rear portion 8g of the body side 8, and this positioning is performed by
As with the rear fender front portion 8f, the rear fender rear portion 8g is located on the floor main 7 of the body side 8 as shown by the phantom line in the figure with respect to the predetermined assembly position shown by the solid line in the figure.
Considering that there is a tendency to go inward a little due to the leaning on, the robot 9 as shown in FIGS. 19 (a) and 19 (b) first uses a gauge as shown in FIG. 7 (a). Plate 11 in the X-axis direction from standby position P1 to rear fender rear part 8g
Above it, it is horizontally moved to a position P2 that is slightly behind the predetermined X-axis direction positioning position P5, and then the gauge plate 11 is moved downwardly from P2 to P3 so as to approach the rear fender rear part 8g, and the rear fender rear part 8g. Then, the gauge plate 11 is horizontally moved in the X-axis direction so as to be pulled back from P3 to the predetermined X-axis positioning position P4, thereby correcting the displacement of the rear fender rear portion 8g in the X-axis direction. Then, after that, the gauge plate 11 is lowered from P4 to a predetermined Z-axis positioning position P5 and brought into contact with the upper side of the rear fender rear portion 8g to correct the positional deviation of the rear fender rear portion 8f in the Z-axis direction. To do.

Then, as shown in FIG. 7 (b), when the gauge plate 11 completes the positioning of the rear fender rear portion 8g to the predetermined assembly position, the rear fender rear part is moved by the clamp mechanism 13 as shown by an arrow in FIG. 7 (c). Clamp part 8g and fix it to gauge plate 11.

8 (a) and 8 (b) show a positioning method of the front pillar portion 8h of the body side 8, and this positioning is performed by
Robot 9 as shown in FIGS. 20 (a), 20 (b) and 20 (c)
The locating pin 10 as shown in FIG. 8 (a).
The locating pin 10 is horizontally moved in the axial direction from the standby position P1 to the predetermined X-axis locating position P2, and the locating pin 10 is fitted into the locating hole 8i of the front pillar portion 8h. As shown in FIG. Is horizontally moved in the X-axis direction from the standby position to a predetermined positioning position in the X-axis direction and brought into contact with the outside of the front pillar portion 8h, thereby positioning the front pillar portion 8h in the X, Y, and Z axis directions. To do.

Then, as shown in FIG. 8 (b), when the positioning of the front pillar portion 8h by the locate pin 10 and the gauge plate 11 to the predetermined assembly position is completed, the front pillar portion 8h is clamped by the clamp mechanism 13 as shown by the arrow in the figure. Clamp and fix it to the gauge plate 11.

FIG. 21 is a time chart showing the positioning operation timing of each part of the body side 8 mentioned above together with the positioning operation timing of the floor main 7. Here, as shown in the figure, first the positioning operation of the floor main 7 is performed, and then the front pillar part. 8h and side rail 8e are positioned, while pre-operation of sill outer section 8a, wheel house outer section 8b, fender lower outer section 8c and rear fender corner section 8d is performed, and side rail section 8e is also clamped, and then rear fender is performed. Front part
8f and the rear fender rear part 8g are preliminarily operated, and then the sill outer part 8e, wheel house outer part 8b, fender lower outer part 8c, rear fender corner part 8d, rear fender front part 8f and rear fender rear part 8g are subjected to final positioning operation. From those parts to the front pillar part 8h
Clamp with.

If each part is positioned at such operation timing,
Positional accuracy can be improved by smoothly and smoothly correcting the position of each part.

Then, the air box 19, the roof panel 18, which are the vehicle body panels other than the floor main 7 and the body side 8,
As for the parcel shelf 20 and the rear panel 17, as shown in FIG. 12, the wrist portions 9a are respectively described above by the plurality of robots 9 provided on the girder of the frame 1 above the shuttle bar type transfer device 2. While descending and moving horizontally to a predetermined position in synchronization with the operation of the plurality of robots 9 for positioning the body side 8,
The locate pins 10 attached to those wrist portions 9a are fitted into the locate holes of the vehicle body panels 17 to 20 carried into the vehicle body assembly location, and the gauge plates 11 attached to the wrist portions 9a are attached to the vehicle bodies. The panels 17 to 20 are positioned at a predetermined assembly position by fitting them to a plurality of parts, respectively, and at that time, by operating the clamp mechanism 13 attached to those wrist parts 9a, a plurality of parts in the vicinity of the gauge plate 11 are Clamp part and gauge plate 11
Securely fix to.

When the positioning of all the vehicle body panels is completed in this way, a plurality of robots 9 spot weld these vehicle body panels to each other by welding guns 12 provided on the wrists thereof and join them. 3 is assembled.

Then, the assembled vehicle body 3 has the above-mentioned robots 9
After returning to the standby positions, they are unloaded from the vehicle body assembly place to the next station by the central shuttle bar 4.

As described above, according to the method of this embodiment, depending on how the support member 6 is placed, the plurality of parts of the body side 8 to be positioned are positioned in different directions with respect to the predetermined assembly position. Even if there is a deviation, each gauge plate 11
The part of the body side 8 on which the gauge plate 11 is positioned approaches from a position deviation side corresponding to the position deviation tendency of the part, comes into contact with the part, and then moves to a predetermined position. It is possible to prevent the plate 11 from coming into contact with a part deviated from the part to be originally positioned, so that the gauge plate 11 applies excessive force to distort or scratch the body side 8 into a non-regular shape. It is possible to prevent the side 8 from being scratched, and it is possible to prevent the gauge plate 11 positioning jig from remaining in contact with the displaced portion, so that accurate positioning can always be performed.

According to this method, even if the vehicle body panel is distorted due to its own weight by being partially supported by the supporting portion, such as lowering or twisting, the distortion is corrected in the same manner as in the case of displacement. However, since the shape can be corrected to the normal shape, accurate positioning can always be performed from this point as well.

Although the present invention has been described above based on the illustrated example, the present invention is not limited to the above-described example and can be applied to positioning of a vehicle body panel other than the body side 8, for example.

(Effects of the Invention) Thus, according to the vehicle body panel positioning method of the present invention, depending on how the vehicle body panel is placed on the support member, a plurality of parts to be positioned on the vehicle body panel are moved in different directions with respect to the predetermined assembly position. Even if the position shift occurs, it is possible to prevent the positioning jig from coming into contact with a position displaced from the original position to be positioned due to the position shift, and therefore, the positioning jig applies an excessive force. It is possible to prevent the body panel from being distorted or scratched to damage the body panel, and it is also possible to prevent the positioning jig from remaining in contact with the displaced part to ensure accurate positioning at all times. It can be carried out.

According to this method, even if the vehicle body panel is partially supported by the supporting member and is distorted due to its own weight, such as being lowered or twisted, the distortion is corrected in the same manner as in the case of displacement. Therefore, accurate positioning can always be performed from this point as well.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 (a) to 1 (c) show an embodiment in which the vehicle body panel positioning method of the present invention is applied to body side positioning in a vehicle body assembly apparatus provided in a vehicle body assembly station of a vehicle body assembly line. Explanatory drawing which shows the positioning procedure of the sill outer part in an example, FIG.2 (a)-(c) is explanatory drawing which shows the positioning procedure of the wheel house outer part in the said Example, and FIG.3 (a)-(c). ) Is an explanatory view showing a positioning procedure of the fender lower outer portion in the above embodiment, FIGS. 4 (a) and 4 (b) are explanatory views showing a positioning procedure of the rear fender corner portion in the above embodiment, and FIG. FIGS. 6A to 6C are explanatory views showing the positioning procedure of the side rail portion in the above embodiment, and FIGS. 6A to 6C are explanatory views showing the positioning procedure of the rear fender front portion in the above embodiment, 7 (a)-( FIG. 8C is an explanatory diagram showing the positioning procedure of the rear fender rear portion in the above embodiment, FIGS. 8A and 8B are explanatory diagrams showing the positioning procedure of the front pillar portion in the above embodiment, and FIG. Is a rear view of the vehicle body assembling apparatus, FIG. 10 shows a positioning state of the floor main in the above embodiment, FIG. 9 is an arrow view of FIG. 9, and FIG. 11 shows a positioning state of the body side in the above embodiment. FIG. 9 is a view taken in the direction of arrow B in FIG. 9, FIG. 12 is a view showing the positioning of another vehicle body panel in the above-described embodiment, and a view taken in the direction of arrow C in FIG. 9, and FIGS. FIG. 14 is a plan view and a front view showing a robot for positioning the sill outer portion of the vehicle body assembling apparatus. FIGS. 14A and 14B are plan views showing a robot for positioning the wheel house outer portion of the vehicle body assembling apparatus. The front view and FIGS. 15 (a) and 15 (b) show the fen of the above vehicle body assembly apparatus. FIGS. 16 (a) and 16 (b) are a plan view and a front view showing a robot for positioning the Darrower outer part, and FIGS. 16 (a) and 16 (b) are a plan view and a front view showing the robot for positioning the rear fender corner part of the vehicle body assembling apparatus. FIGS. 18A and 18B are a plan view and a front view showing a robot for positioning side rails of the vehicle body assembly apparatus, and FIGS. 18A and 18B show a rear fender front section of the vehicle body assembly apparatus. 19A and 19B are a plan view and a front view showing a robot for positioning the rear fender rear portion of the vehicle body assembling apparatus, and FIGS. b) and (c) are a plan view, a front view and a side view showing a robot for positioning the front pillar portion of the vehicle body assembling apparatus, and FIG. 21 is a view showing each portion of the body side in the above embodiment. The operation timing of the Me-decided is a time chart showing the positioning operation timing of the floor main. 3 ... Car body, 6 ... Support member 7 ... Floor main, 8 ... Body side 9 ... Robot, 9a ... Wrist 10 ... Locating pin, 11 ... Gauge plate

Claims (1)

(57) [Claims] 1. A positioning jig is brought into contact with each of a plurality of portions of a vehicle body panel to position the vehicle body panel at a predetermined assembly position. The part of the vehicle body panel located at the mounting position, which is positioned by the jig, is approached from the position shift side corresponding to the position shift tendency of the part with respect to the mounting position and brought into contact with the position, and then the predetermined position A method for positioning a vehicle body panel, comprising: