JP7160966B2 - car body assembly line - Google Patents

Description

The present invention relates to a vehicle body assembly line for assembling components such as a vehicle drive source to a vehicle body.

For example, Patent Literature 1 discloses a vehicle body assembly line that is used as a small-space, efficient production line or the like.

This car body assembly line includes a loop-shaped first conveying path that guides a seated conveying device that supports and seats the car body from below, and that enables assembly work at all conveying positions, and a plurality of hanging type that support the car body by suspending it. A loop-shaped second conveying path is provided to guide the conveying device and allow assembly work to be performed at all conveying positions.

In the vehicle body assembly line, at least one location where the first transportation path and the second transportation path are vertically arranged side by side is provided with a vehicle body between the seated transportation device and the suspended transportation device. is provided.

Japanese Patent No. 3765509

By the way, it is necessary that the vehicle body on which the components are assembled by the vehicle body assembly line as described above, that is, the vehicle, has a predetermined quality.

However, in order to ensure a predetermined level of quality, there is a possibility that various unexpected defects may occur in the car body being assembled, especially at the start of mass production, in the car body assembly line. It is necessary to add a huge amount of man-hours to

SUMMARY OF THE INVENTION The present invention has been made in consideration of such problems. To provide a vehicle body assembly line capable of remarkably reducing cost man-hours until the start of production.

A vehicle body assembly line according to an aspect of the present invention includes a first transport path that guides a carriage capable of mounting a plurality of components on the vehicle body in a state in which the vehicle body is supported from below and seated, and the first transport path. A transport hanger that is provided at a higher position than the above, engages with the first transport path at the engagement position, and can mount a plurality of components from below the vehicle body in a state where the vehicle body is suspended and supported. A second conveying path for guiding and a vehicle body provided at the engagement position between the first conveying path and the second conveying path and seated on the conveying carriage on the first conveying path are lifted to the conveying hanger. a transfer lifter for transferring or lowering the car body suspended and supported by the transfer hanger to transfer the car body to the transfer carriage; and a car body disposed near the transfer lifter for measuring the shape of the car body. and a measuring machine.

According to the present invention, the vehicle body shape can be measured by the vehicle body measuring machine arranged near the transfer lifter, so that the vehicle body can be manufactured and verified with high accuracy on the vehicle body assembly line.

It is possible to greatly reduce the work man-hours up to the introduction of the car body into a mass production car body assembly line or the like in which no car body measuring machine is installed, for example, the initial man-hours at the start of new production of a new type of car.

FIG. 1 is a schematic bird's-eye perspective view showing a configuration example of a vehicle body assembly line according to the embodiment. 2A is a schematic plan view line configuration diagram of the vehicle body assembly line according to the embodiment, FIG. 2B is a schematic plan view line configuration diagram of the vehicle body assembly line of the first modified example, and FIG. 2C is a vehicle body assembly line of the second modified example. FIG. 2D is a plan view schematic line configuration diagram of a line, and FIG. 2D is a plan view schematic line configuration diagram of a vehicle body assembly line of a third modification. FIG. 3 is a partially omitted perspective layout view of the transfer/measurement booth viewed from the interior station side. FIG. 4 is a partially omitted front layout diagram of the transfer/measurement booth. FIG. 5 is a partially omitted top layout view of the transfer/measurement booth. FIG. 6 is a partially omitted perspective layout view of the transfer/measurement booth viewed from the first chassis station side. FIG. 7 is a schematic process diagram for explaining the operation of the vehicle body assembly line according to the embodiment.

An embodiment of a vehicle body assembly line according to the present invention will be described in detail below with reference to the accompanying drawings.

[Constitution]
FIG. 1 is a schematic bird's-eye perspective view showing a configuration example of a vehicle body assembly line 10 according to the embodiment.

The vehicle body assembly line 10 basically has a rail-shaped first transport path 14 provided on the floor 12 , which engages with the first transport path 14 at an engagement position 16 , and is mounted on an elevated structure 18 on the floor 12 . and a rail-shaped second transport path 20 provided.

2A to 2D are plan view schematic line configuration diagrams of the vehicle body assembly line 10 and modifications thereof. FIG. 2A shows the vehicle body assembly line 10 according to the embodiment, which is formed in a figure-of-eight line (loop+loop).

FIG. 2B shows a first transport path 14A related to carriage transport and a second transport path 20A related to hanger transport, each formed in a U-shaped path, connected to an X-shaped line (non-loop + non-loop). 1 shows a vehicle body assembly line 10A of a modified example.

FIG. 2C shows a second modification in which the first transport path 14 formed as a closed loop path and the second transport path 20A formed as a U-shaped path are connected to the left X-shaped line (non-loop + loop). A vehicle body assembly line 10B is shown.

FIG. 2D shows a third modification in which the first transport path 14A formed as a U-shaped path and the second transport path 20 formed as a closed loop path are connected to the right X-shaped line (loop + non-loop). A car body assembly line 10C is shown.

Note that the vehicle body assembly line 10C in FIG. 2D may be called a proportional symbol (∝)-shaped line, and the vehicle body assembly line 10B in FIG. 2C may be called an inverted proportional symbol-shaped line.

The meaning of 1st to 8st in FIGS. 2A to 2D will be described later.

Hereinafter, the vehicle body assembly line 10 according to the embodiment shown in FIGS. 1 and 2A will be described as a representative.

As shown in FIGS. 1 and 2A, each of the first transport path 14 and the second transport path 20 of the vehicle body assembly line 10 according to the embodiment has a substantially rectangular shape with four rounded corners in plan view. It is formed in a closed loop path and arranged parallel to the plane (horizontal plane) of the floor 12 . As described above, the first conveying path 14 and the second conveying path 20 have a substantially figure-eight shape in plan view.

The first conveying path 14 is formed as a carriage conveying path for guiding a conveying carriage 22 that is a seated conveying device.

The carriage 22 is capable of self-propelled (automatic travel) or manually traveled along rails in a state in which the vehicle body B is supported from below and seated.

A vehicle body B, which is seated and transported by the transport carriage 22, is loaded with a plurality of component parts from above or laterally (front, rear, left, and right) by an operator or a robot (not shown) while traveling or stopping on the first transport path 14. P (see FIG. 6) is attached.

On the other hand, the second conveying path 20 is formed as a hanger conveying path that guides a conveying hanger 24, which is a hanging conveying device.

The transport hanger 24 is capable of running (automatically) or manually running along rails while supporting the vehicle body B in a suspended state.

The vehicle body B, which is suspended and transported by the transport hanger 24, is moved laterally (forward, backward, left and right) or downward by an operator or a robot (not shown) while traveling or stopping on the second transport path 20. A part P is mounted.

As will be described later, the component parts P attached to the vehicle body B on the first transport path 14 or the second transport path 20 include electrical wiring, liquid medium piping, an instrument panel, suspension, main machine (engine or motor ), tires, etc.

In the vehicle body assembly line 10, an object in which all the component parts P are assembled to the vehicle body B, that is, the vehicle V (see the lower right position in FIG. 1) is dispensed from the first transport path 14 (vehicle V A liquid medium (oil, coolant, etc.) is injected before the vehicle starts running.

At least one engaging position 16 at which the first conveying path 14 and the second conveying path 20 are arranged vertically, a conveying carriage 22 as a seated conveying device and a conveying hanger as a suspended conveying device are provided. 24, a transfer lifter 28 as a vertical transfer device capable of mutually transferring the vehicle body B, and a vehicle body measuring machine 40 as a three-dimensional shape measuring machine.

A transfer/measurement booth (or referred to as a transfer/measurement station) 32 is formed by the transfer lifter 28 and the vehicle body measuring machine 40 .

<Explanation of Outline of Process Stations (1st to 8th) of Car Body Assembly Line 10>
When the process stations of the vehicle body assembly line 10 are schematically explained in order of process, in a plan view, an input/lower station (ST) 101 (1st) is at the upper right corner of the first transport path 14, and an interior station 102 (2st) is at the upper left corner. , the first chassis station 103 (3st) at the lower right corner of the second transport path 20, the second chassis station 104 (4st) at the lower left corner, the third chassis station 105 (5st) at the upper left corner, and the fourth chassis station 105 (5st) at the upper right corner. 106 (6st), an appearance station 107 (7st) at the lower left corner of the first transport path 14, and a composite/inspection station 108 (8st) at the lower right corner.

A completed vehicle body B is delivered as a vehicle V from the composite/inspection station 108 . In this case, the vehicle V is driven manually or automatically to a final inspection station (not shown).

<Description of the configuration of the transfer lifter 28 in the transfer/measurement booth 32>
A transfer lifter 28 as an elevating transfer device and a vehicle body measuring machine 40 are disposed at an engagement position 16 between the first transport path 14 and the second transport path 20 where the respective rails overlap each other with a space in plan view. be done.

As described above, the transfer/measurement booth 32 is formed at the engagement position 16 by the transfer lifter 28 and the vehicle body measuring machine 40 .

In addition, when the vehicle body assembly line 10 is deployed all over the world and the vehicle V is produced in each place, the vehicle body measuring machine 40 is omitted in order to reduce the cost, and a simple configuration such as a two-pillar assembly line is used. only transfer lifters are provided.

That is, the vehicle body assembly line 10 shown in FIG. 1 is a line (demonstration line) for demonstrating reduction in man-hours for model startup in other regions of Japan or overseas (local).

3, 4, 5 and 6 in addition to FIG. to explain.

3 is a partially omitted perspective layout view of the transfer/measurement booth 32 viewed from the interior station 102 side, FIG. 4 is a partially omitted front layout view of the transfer/measurement booth 32, and FIG. FIG. 6 is a partially omitted top layout view of the measurement booth 32, and FIG. 6 is a partially omitted perspective layout view of the transfer/measurement booth 32 viewed from the first chassis station 103 side.

As shown in FIG. 4, the transfer/measurement booth 32 is provided with a pit 34 under the floor 12 (underground in this embodiment).

As shown in FIGS. 4 and 5, at the four corners of the base in the pit 34, there are lifter drive mechanisms 38 for vertically extending and retracting four vertically extendable columns 36 synchronously. is provided.

The four columns 36 are planted at each vertex of the rectangle in plan view. The transfer lifter 28 is composed of a column 36 and a lifter drive mechanism 38 .

The transfer lifter 28 synchronously extends the four columns 36 from the contracted state, which is the home position of the columns 36 , via a lifter drive mechanism 38 . The vehicle body B is lifted and separated from the vehicle body B, and transferred to the transport hanger 24.例文帳に追加

That is, as can be seen from FIG. 3, the transfer lifter 28 abuts and supports the lower portion of the frame under both left and right sides of the vehicle body B loaded on the carriage 22 with the top shelf plate portions 37 of the four columns 36. While driving the lifter driving mechanism 38, the four columns 36 are synchronously lifted from the home position. As a result, the vehicle body B is lifted away from the carrier 22 (first carrier path 14).

When the vehicle body B is lifted to the transportation position (height) of the second transportation path 20, the transportation hanger 24 moves to the engagement position 16, and the claw portion 25 of the transportation hanger 24 hooks the vehicle body B to suspend it. , the vehicle body B can be separated from the transfer lifter 28 .

After the transport hanger 24 suspends the vehicle body B, the four columns 36 of the transfer lifter 28 are synchronously lowered to the home position, thereby transferring (raising) the vehicle body B from the transport carriage 22 to the transport hanger 24. transfer) is completed.

In this way, the transfer lifter 28 synchronously extends the four columns 36 from the home position via the lifter drive mechanism 38 , so that the transfer lifter 28 is seated and supported by the carriage 22 to move the floor 12 at the engagement position 16 . The vehicle body B positioned on the side can be lifted up to the transport hanger 24 and transferred to the transport hanger 24.例文帳に追加

On the other hand, when the vehicle body B suspended on the transport hanger 24 is transferred (lowered) to the transport carriage 22 , the transport hanger 24 suspending the vehicle body B is moved to the engagement position 16 . At the engagement position 16, the transfer lifter 28 synchronously raises the four columns 36 from the home position to the transfer position of the second transfer path 20, and lowers both left and right sides of the vehicle body B loaded on the transfer carriage 22. The lower part of the frame is abutted and supported by the top shelf plate portions 37 of the four columns 36 .

The transport hanger 24 is moved (separated) from the engaging position 16 while the vehicle body B is abutted and supported from below. Next, the transfer lifter 28 synchronously lowers the four columns 36 to the home position while abutting and supporting the vehicle body B from below.

As a result, the vehicle body B is seated and supported on the empty carriage 22 (first transport path 14 ) waiting at the engagement position 16 on the first transport path 14 .

Thus, the transfer (lowering transfer) of the vehicle body B from the transfer hanger 24 to the transfer carriage 22 is completed.

That is, the transfer lifter 28 synchronously contracts the four columns 36 from the extended state via the lifter drive mechanism 38, thereby moving the vehicle body B positioned at the engagement position 16 by the transfer hanger 24 to the transfer hanger. It can be lowered from 24 to a carriage 22 and transferred.

The transfer lifter 28 can position and stop the column 36 at an arbitrary vertical position while the vehicle body B is being raised or lowered.

<Description of the configuration of the vehicle body measuring machine 40 in the transfer/measurement booth 32>
As shown in FIGS. 4 and 5, at the engagement position 16 between the first transport path 14 and the second transport path 20 at which the transfer lifter 28 is provided, the direction in which the first and second transport paths 14 and 20 extend A right side body measuring machine 40R and a left side body measuring machine 40L are provided on both sides along the line. Except for cases where the body measuring machine 40R and the body measuring machine 40L are described separately, in order to avoid complexity, the two body measuring machines 40R and 40L and the separate body measuring machines 40R and 40L are simply referred to as , body measuring machine 40 .

Measuring machine operation PCs 41 (41L, 41R), which are controllers of the body measuring machine 40 and which include a personal computer (PC), and a control panel 43, which is a driving device of the body measuring machine 40, are located near the body measuring machine 40. (43L, 43R) are provided (FIGS. 1 and 5).

As shown in FIG. 5, the measurement areas of the vehicle body measuring machine 40 in the transfer/measuring booth 32 are a vehicle body measurement area 52 for measuring the vehicle body B and a turntable 63 (see FIG. 6) provided beside the vehicle body measurement area 52. ) consists of a component measurement area 54 for measuring a component P placed thereon.

That is, the vehicle body measuring machines 40R and 40L measure the shape of the vehicle body B within the engagement position 16 within the measurement area (vehicle measurement area) 52 of the vehicle body B under the control of the measuring machine operation PC 41 and the control panel 43. In this case, one vehicle body measuring machine 40L can also measure the shape of the component P transported into the adjacent component measuring area 54 .

As shown in FIGS. 3, 5, and 6, the body measuring machines 40R and 40L are six-axis robots each having a three-dimensional scanner 56 (56R, 56L) attached to the end effector. 58 (58R, 58L).

The base of the six-axis robot 58 is arranged on the side of the column 60 (60R, 60L) as shown in FIG.

A column 60 that supports a 6-axis robot 58 under the control of the measuring machine operation PC 41 and the control panel 43 moves along side rails 62 provided on the floor 12 in the X direction (front-rear direction) in the drawing, which is the transport direction of the vehicle body B. can be moved freely. Similarly, the base of the 6-axis robot 58 is movable along the groove 65 of the column 60 in the Z direction (vertical direction).

Under the control of the measuring machine operation PC 41 and the control panel 43, the three-dimensional scanner 56 of the 6-axis robot 58 can be moved in the Y direction (horizontal width direction) by rotating the base and joints of the 6-axis robot 58. be.

As a result, the three-dimensional scanner 56 of the body measuring machine 40 can measure the shape of substantially the entire circumference of the vehicle body B. FIG. The measured shape data is stored in the storage device of the measuring machine operation PC 41 and compared with the reference shape preset on the measuring machine operation PC 41 .

[motion]
Basically, the operation of the vehicle body assembly line 10 according to the embodiment configured as described above will be described with reference to the schematic process diagram of FIG.

After completion of painting in a painting process (not shown), which is a pre-process of the vehicle body assembly line 10, the vehicle body B from which component parts P such as doors have been removed is conveyed on a rail-shaped elevated structure on the floor 12. It is transported by transport hanger 24 to loading/unloading station 101 via path 200 (FIG. 1).

As shown in FIG. 7, in the input/lower station 101, while the vehicle body B is suspended from the transport hanger 24, some electrical wiring, piping, etc. are assembled from below (overhead work). is transferred from the transport hanger 24 to the transport carriage 22 . The rest of the electrical wiring, piping, etc. are assembled to the vehicle body B while being supported by the carriage 22 .

The vehicle body B, to which electric wiring, piping, etc. are assembled, is conveyed to the interior station 102 along the first conveying path 14 by the conveying cart 22 .

At the next interior station 102 , interior parts such as a roof lining, a floor mat, and an instrument panel module are assembled to the vehicle body B while the vehicle body B is seated and supported on the carriage 22 .

The vehicle body B to which the interior parts are assembled is transported along the first transport path 14 by the transport carriage 22 to the transfer/measurement booth 32 at the engagement position 16 .

In the transfer/measurement booth 32, the top shelf plate portions 37 of the four columns 36 of the transfer lifter 28, which is a four-pillar lifter, are brought into contact with the vehicle body B so that the booth can be raised. The column 36 is extended by the transfer lifter 28 in a state where it can be lifted, and the vehicle body B is lifted to a predetermined height position Hp (FIG. 7), thereby being separated from the carriage 22. and positioned within the vehicle body measurement area 52 .

Next, the external shape and dimensions of the vehicle body B assembled with the electrical wiring, piping, interior parts, etc. described above are determined at the input/lower station 101 and the interior station 102 via the control panel 43 under the control of the measuring machine operation PC 41. Measurements are made by the three-dimensional scanners 56 (56R, 56L) of the vehicle body measuring machines 40 (40R, 40L) in the transfer/measurement booth 32, and recorded in the storage device of the measuring machine operation PC 41.

In the measuring machine operation PC 41, the shape and dimensions of the reference vehicle body (reference vehicle body) B that have been measured in advance are compared with the shape and dimensions of the vehicle body B that are actually measured. For example, in addition to changes in accuracy of the mounting surface of ADAS (Advanced Driver-Assistance System) parts, it is determined whether gaps between component parts of vehicle body B, steps of component parts, deformation, etc. are within a predetermined range (shape determination It is said.)

After the measurement (comparison), the transfer lifter 28 further lifts the vehicle body B to the position of the transport hanger 24 on the second transport path 20 , thereby suspending the vehicle body B from the transport hanger 24 .

The vehicle body B suspended on the transport hanger 24 is transported to the position of the first chassis station 103 along the second transport path 20, and the shape measured by the vehicle body measuring machine 40 is judged by the measuring machine operation PC 41. A plurality of component parts P are assembled from below to the vehicle body B that has been accepted in .

The components P to be assembled differ depending on the vehicle type of the vehicle body B. For example, at the first chassis station 103, a fuel tank module and the like are assembled, and at the second chassis station 104, a front suspension module, an engine module (and A third chassis station 105 assembles a rear suspension, brake module, etc., and a fourth chassis station 106 assembles a front end module with ADAS components and a vehicle control module. .

The vehicle body B to which the chassis-related parts have been assembled is transported along the second transport path 20 by the transport hanger 24 to the transfer/measurement booth 32 at the engagement position 16 again.

In the transfer/measurement booth 32, the top shelf plate portions 37 of the four columns 36 of the transfer lifter 28, which is a four-pillar lifter, are brought into contact with the vehicle body B so as to be set in a lowerable state. In the state in which the vehicle body B is set to be able to be lowered, the transfer lifter 28 lowers the vehicle body B to a predetermined height position Hp (see FIG. 7), thereby separating the vehicle body B from the transport hanger 24 and measuring the vehicle body. Positioned within region 52 .

Next, at the first chassis station 103, the second chassis station 104, the third chassis station 105, and the fourth chassis station 106, the external shape and dimensions of the vehicle body B to which the chassis-related parts have been assembled are determined by the measuring machine operation PC 41 and the controller. Under the control of the panel 43, measurements are made by the three-dimensional scanners 56 (56R, 56L) of the vehicle body measuring machines 40 (40R, 40L) in the transfer/measurement booth 32, and recorded in the storage device of the measuring machine operation PC 41.

In the measuring machine operation PC 41, the shape/dimension of the reference vehicle body measured in advance and the shape/dimension of the vehicle body B actually measured are compared with each other, and changes in surface accuracy after the parts are installed, gaps between the components, steps of the components, It is determined whether the deformation is within a predetermined range (referred to as shape determination).

After the measurement (comparison), the transfer lifter 28 further lowers the vehicle body B to the position of the carriage 22 on the first transportation path 14 , so that the vehicle body B is seated and supported on the carriage 22 .

In a state in which the vehicle body B is seated and supported on the carriage 22, it is transported along the first transport path 14 by the carriage 22 to the position of the appearance station 107. A component P is assembled.

At the appearance station 107, the bumper, tires, windows, seats, etc. are assembled to the vehicle body B. FIG. Next, the vehicle body B is transported by the carriage 22 along the first transport path 14 to the position of the composite/inspection station 108 .

At the combination/inspection station 108, a component part P, which is a door module in which a power window unit, a speaker, a door lining, etc., are sub-assembled on the removed door, is assembled to the vehicle body B. FIG.

A window, an actuator, a speaker, wiring, a switch, a door lining, etc., are assembled to the removed door in a door subassembly shop 110 arranged on the outer periphery of the first transport path 14 to complete a door module. be.

The completed door module is conveyed to the component measurement area 54 by a carrier (not shown) and placed on the turntable 63 as the component P (FIG. 6).

A component part P as a door module placed on the turntable 63 is measured for accuracy, shape, and dimensions by the three-dimensional scanner 56L of the vehicle body measuring machine 40L. It is conveyed to the inspection station 108 and assembled to the vehicle body B.

A vehicle V (FIG. 1) is completed by assembling a door module and the like to the vehicle body B. As shown in FIG.

At the combination/inspection station 108, the vehicle V is also injected with fluid and fueled. Thereby, the vehicle V is put into a travelable state.

Next, the vehicle V is transferred from the carriage 22 to the floor 12 to be discharged from the vehicle body assembly line 10, and the completed vehicle inspection is carried out in the next process. Complete vehicle inspection may be performed at the composite/inspection station 108 .

The vehicle body B whose shape is rejected by the vehicle body measuring machine 40 is returned to the vehicle body assembly line 10 after the cause is investigated and countermeasures are taken off-line each time.

On the outer periphery of the first transport path 14 or the second transport path 20, in addition to the above-described door assembly plant 110, a suspension assembly plant, a front end module assembly plant and the like (not shown) are provided.

[Invention that can be understood from the embodiment and modifications]
Here, the invention that can be grasped from the above embodiment and modified examples 1 to 3 will be described below. In addition, although the code|symbol used above is attached to the component for convenience of understanding, this component is not limited to what attached the code|symbol.

The vehicle body assembly lines 10, 10A to 10C according to the present invention include a first transport path 14 for guiding a carriage 22 capable of mounting a plurality of component parts P on the vehicle body B in a state in which the vehicle body B is supported from below and seated. , is provided at a higher position than the first transport path 14, engages with the first transport path 14 at an engagement position 16, and supports the vehicle body B from below from below the vehicle body B. A second conveying path 20 for guiding a conveying hanger 24 to which a plurality of components P can be mounted, and a first conveying path 16 provided at the engagement position 16 between the first conveying path 14 and the second conveying path 20. The car body B seated on the carrier 22 on the road 14 is raised and transferred to the carrier hanger 24, or the car body B suspended and supported by the carrier hanger 24 is lowered and transferred to the carrier 22. and a vehicle body measuring machine 40 disposed near the transfer lifter 28 for measuring the shape of the vehicle body B.

With this configuration, in the vehicle body assembly lines 10, 10A to 10C, the vehicle body shape can be measured by the vehicle body measuring machine 40 disposed near the transfer lifter 28. Accurate build-in and verification become possible.

The work man-hours until the car bodies are put into a mass-production car body assembly line or the like in which the car body measuring machine 40 is not arranged, for example, the initial man-hours at the start of new production of a new model vehicle V can be greatly reduced.

In the car body assembly lines 10, 10A to 10C, the car body measuring machine 40 compares the car body shape when the component P is mounted on the car body B with a preset reference car body shape. , the degree of change in the vehicle body shape is measured.

In the car body assembly lines 10, 10A to 10C, the degree of change in the car body shape is measured by comparing the car body shape when the component P is mounted on the car body B with a preset reference car body shape. As a result, the vehicle body B can be manufactured and verified with high accuracy on the vehicle body assembly lines 10, 10A to 10C.

It is possible to greatly reduce the work man-hours until the car body is put into a car body assembly line for mass production, etc., where the car body measuring machine 40 is not arranged, for example, the initial man-hours at the start of new production of a new model.

Further, in the vehicle body assembly lines 10, 10A to 10C, the vehicle body measuring machine 40 may measure changes in the vehicle body shape before and after the component P is mounted on the vehicle body B.

In this vehicle body assembly line 10, 10A to 10C, the vehicle body measuring machine 40 disposed near the transfer lifter 28 can measure changes in the shape of the vehicle body before and after the component parts are installed. , it becomes possible to build and verify the vehicle body B with high accuracy.

It is possible to greatly reduce the work man-hours until the car body is put into a car body assembly line for mass production, etc., where the car body measuring machine 40 is not arranged, for example, the initial man-hours at the start of new production of a new model.

Further, in the vehicle body assembly lines 10, 10A to 10C, the plurality of component parts P include a driving source for the vehicle V, and the vehicle body measuring machine 40 measures the vehicle body B before and after mounting the driving source. Measure.

As a result, the driving source of the vehicle V is a heavy object, and by measuring the vehicle body B before and after mounting the component P of the heavy object, it is possible to determine whether the vehicle body B is being assembled on the vehicle body assembly lines 10, 10A to 10C. It is possible to easily determine whether or not the quality is ensured.

Furthermore, in the vehicle body assembly lines 10, 10A to 10C, the first transport path 14 and the second transport path 20 may each be formed as a closed loop path.

Furthermore, in the vehicle body assembly lines 10, 10A to 10C, even if one of the first transport path 14 and the second transport path 20 is formed as a closed loop path and the other is formed as a U-shaped path, good.

Furthermore, in the vehicle body assembly lines 10, 10A to 10C, the first transport path 14 or the second transport path 20 may each be formed in a U-shaped path.

Furthermore, in the vehicle body assembly lines 10, 10A to 10C, a small assembly shop 110 is provided near the first transport path 14 or the second transport path 20 for assembling the component parts P by subassembling parts. You may do so.

According to this, the space of the vehicle body assembly lines 10, 10A to 10C can be effectively utilized with a compact process layout.

Furthermore, the vehicle body assembly lines 10, 10A to 10C further include a measurement booth 32 for the component parts P disposed in the vicinity of the engagement position of the vehicle body measuring machine 40. The shape of the sub-assembled component P transported from the sub-assembly shop 110 and arranged may be measured by the vehicle body measuring machine 40 .

According to this, the sub-assembly components to be mounted on the vehicle body B on the first conveying path 14 or the second conveying path 20 are measured in the measuring booth 32 using the vehicle body measuring machine 40 before being mounted on the vehicle body B. Since the shape can be measured, it can be easily determined whether or not the shape quality of the sub-assembly component P is ensured before being mounted on the vehicle body B.

In addition, the present invention is not limited to the above-described embodiment, and can of course adopt various configurations based on the contents of this specification.

DESCRIPTION OF SYMBOLS 10, 10A-10C... Car body assembly line 12... Floor 14, 14A... 1st conveyance path 16... Engagement position 18... Elevated 20, 20A... 2nd conveyance path 22... Conveyance cart 24... Conveyance hanger 28... Transfer lifter 32 Transfer/measurement booth 34 Pit 36 Column 38 Lifter drive mechanism 40 (40L, 40R) Car body measuring machine 41 (41L, 41R) Measuring machine operation PC 43 Control panel 52 Car body measurement area 54 Configuration Component measurement area 56 (56L, 56R) Three-dimensional scanner 58 6-axis robot 60 Column 63 Turntable 101 Input/lower station 102 Interior station 103 First chassis station 104 Second chassis station 105 Second 3 chassis station 106... 4th chassis station 107... Appearance station 108... Composite/inspection station 110... Door assembly shop

Claims (9)

a first transport path for guiding a carriage capable of mounting a plurality of component parts on the vehicle body in a state in which the vehicle body is supported from below and seated;
It is provided at a position higher than the first transport path, engages with the first transport path at an engagement position, and mounts a plurality of components from below the vehicle body in a state in which the vehicle body is suspended and supported. a second transport path for guiding possible transport hangers;
Provided at the engagement position between the first transport path and the second transport path, the vehicle body seated on the transport carriage on the first transport path is raised and transferred to the transport hanger, or a transfer lifter that lowers the vehicle body suspended and supported by the vehicle and transfers it to the carriage;
a vehicle body measuring machine disposed near the transfer lifter for measuring the shape of the vehicle body;
body assembly line. In the vehicle body assembly line according to claim 1,
The vehicle body measuring machine
A car body assembly line for measuring the degree of change in the car body shape by comparing the car body shape when the components are mounted on the car body with a preset reference car body shape. In the vehicle body assembly line according to claim 1,
The vehicle body measuring machine
A car body assembly line for measuring changes in the shape of the car body before and after mounting the components on the car body. In the vehicle body assembly line according to claim 3,
The vehicle body assembly line, wherein the plurality of component parts include a driving source of a vehicle, and the vehicle body measuring machine measures the vehicle body before and after mounting of the driving source. In the vehicle body assembly line according to any one of claims 1 to 4,
The vehicle body assembly line, wherein the first transport path and the second transport path are each formed as a closed loop path. In the vehicle body assembly line according to any one of claims 1 to 4,
A car body assembly line, wherein one of the first transport path and the second transport path is formed as a closed loop path, and the other is formed as a U-shaped path. In the vehicle body assembly line according to any one of claims 1 to 4,
The vehicle body assembly line, wherein the first transport path or the second transport path is formed in a U-shaped path. In the vehicle body assembly line according to any one of claims 1 to 7,
A vehicle body assembly line, wherein a sub-assembly shop for sub-assembling parts to assemble the component parts is provided beside the first transport path or the second transport path. In the vehicle body assembly line according to claim 8,
further comprising a component measurement booth disposed in the vicinity of the engagement position of the body measuring machine;
A vehicle body assembly line in which, in the measurement booth, the shapes of the sub-assembled component parts transported from the sub-assembly shop and arranged are measured by the vehicle body measuring machine.

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