JPS62234787A - Method and system of assembling two-wheel barrow front section - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and system for assembling a front part of a two-wheeled vehicle, and more specifically, for example, when assembling a front part of a two-wheeled vehicle, the main body parts of the front part are positioned upside down on a jig device. At the working position, the jig device is rotated as necessary and the parts supplied from the parts supply device are assembled to the main body parts by the assembly device, thereby assembling the front part. The present invention relates to a method and system for assembling a front part of a two-wheeled vehicle, which automates work, configures a highly functional production line, and facilitates the positioning of parts during the assembling work and the assembling itself.

In general, it is extremely difficult to automate the assembly work of products that are composed of a large number of parts, have a large possibility of model changes, and require production of a wide variety of products in small quantities. for example,
In the conventional technique, when assembling the front part of a two-wheeled vehicle, the front wheel is placed horizontally on a workbench,
There is an assembly system in which parts such as a front fork and a front fender are assembled to the front wheel, and the front part, which has been assembled, is assembled to a frame of a two-wheeled vehicle.

This system requires a positioning mechanism to accurately position the front fork relative to the front wheel when assembling the front fork to the front wheel. However, since the front fork is attached to both the upper and lower surfaces of the front wheel, it is difficult to position it, and the configuration of the positioning mechanism is also extremely complicated. Furthermore, it is necessary to make the front fork assembly device arbitrarily movable with respect to the front wheel, or to provide two assembly devices for assembling the two front forks, respectively, making the configuration even more complex. There is a concern that the situation will change.

On the other hand, there is another assembly system in which each part constituting the front part is sequentially assembled onto the frame of a two-wheeled vehicle. However, in this case, the frame occupies a considerable amount of space on the workbench, and most of the frame is made up of components that are not directly involved in assembling the front section. Therefore, such an assembly system has the disadvantage that the overall structure becomes large and extremely uneconomical.

The present invention has been made in order to overcome the above-mentioned disadvantages, and the steering stem is transported to a working position while being positioned upside down on a jig device, and at the working position, the jig device is By assembling the parts supplied from the parts supplying device to the steering stem using the assembling device, the assembly work of the front part can be performed automatically and functionally. It is an object of the present invention to provide a method and system for assembling a front part of a two-wheeled vehicle, which can quickly respond to problems and facilitate positioning of parts.

In order to achieve the above object, the present invention provides a first system for positioning and fixing a conveyed steering stem in an inverted state.
a second step of assembling one or more parts to the steering stem; and a third step of assembling one or more parts by rotating the steering stem by a predetermined angle. It is characterized by

The present invention further provides a conveyance device that conveys the steering stem to a working position, a jig device that positions the steering stem in an inverted state and rotates to change the posture of the steering stem, The present invention is characterized by comprising a parts supply device that is placed at a working position and supplies parts to be assembled to the steering stem, and an assembly device that assembles the parts to the steering stem.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a method for assembling a front part of a two-wheeled vehicle according to the present invention will be described in detail below with reference to the accompanying drawings, with reference to preferred embodiments in relation to an assembly system for carrying out the method.

In FIG. 1, reference numeral 10 indicates an assembly system according to the present invention, and this assembly system 10 is applied to the assembly work of the front part of a two-wheeled vehicle. In this case, the assembly system 1O includes a transport device 12 from the work station STI to the work station ST6, and a positioning system for positioning and holding the steering stem and the like of the front section and transporting the steering stem from the work station STI to the work station ST6 by the transport device 12. jig 14.

Here, in the assembly system 10, assembly work is performed on each part constituting the front section of the drum brake specification shown in FIG. 2. That is, the steering stem 16 attached to the frame of a two-wheeled vehicle has a stem 16a and a mounting portion 16b.
The front fender 18 is attached to the mounting part 16b.
are attached by fender bolts 20. Further, holding portions 22a and 22b are formed at both ends of the mounting portion 16b, and one ends of front forks 24a and 24b are inserted through these holding portions 22a and 22b, respectively, and fixed with fork bolts 26. On the other hand, a collar 30 and a brake panel 32 are attached to the shaft portion 28a of the front wheel 28, and holding portions 36a, 36b are formed at the other ends of the front forks 24a, 24b. The shaft portion 28a of the front wheel 28 has this holding portion 35a,
The axle shaft 38 is inserted through 36b. An axle nut 40 is screwed onto the end of the axle shaft 38.

Therefore, in FIG. 1, first component supply devices 42a to 42c are arranged on one side of the conveyance device 12 at work stations ST2 to ST4, respectively. In this case, the first component supply device 42a is the work station ST2.
The front fender 18 is supplied to the first parts supply device 42a, and the front forks 24a and 24b are supplied to the work station ST3. Further, the first parts supply device 42c supplies the front wheel 2 with the collar 30 and the brake panel 32 attached to the work station ST4.
Supply 8.

On the other hand, the transport bags at work stations ST2 to ST4! On the other side of 12 is a second component supply bag W44a.
44c are arranged, respectively. In this case, the second component supply device ff144a supplies the fender bolt 20 to the work station ST2, the second component supply device 44b supplies the fork bolt 26 to the work station ST3, and the second component supply device 44c supplies the fender bolt 20 to the work station ST2. station ST
4, an axle nut 40 is supplied.

Supports 46a are provided on the sides of the first component supply devices 42a to 42c and the sides of the second component supply devices 44a to 44c, respectively.
46c to 48a to 48d are erected. Between the pillars 46a and 48c, between 46b and 48b, and between 46c
, 48c are bridged with guide members 50a to 50c, respectively, so as to be orthogonal to the conveying device 12. Also, between the pillars 48a and 48b, between 48b and 48c, 48C148d
Guide members 52a to 52c are similarly bridged between them.

An assembly device 54a for assembling the front fender 18 to the steering stem 16 is movably disposed on the guide member 52a, and an assembly device 5 for assembling the fender bolt 20 to the steering stem 16 is disposed on the guide member 52a.
4b is arranged so as to be freely movable. Moreover, the guide member 50b
An assembling device j54c for assembling the front forks 24a, 24b to the steering stem 16 is movably disposed on the guide member 52b, and an assembling device 54d for assembling the fork bolt 26 to the steering stem 16 is movably disposed on the guide member 52b. Ru. Furthermore, the front wheel 28 is attached to the front fork 24a, 24b on the guide member 50C.
An assembly bag R54e to be assembled in between is arranged so as to be freely movable.
Assembling devices 54f and 54g for assembling the axle shaft 38 and the axle nut 40 to the front wheel 28 are movably disposed on the guide member 52c, respectively.

Therefore, as shown in FIG. 3, the positioning jig 14 constitutes a jig device 58 together with a rotation mechanism 56 provided in the transport device 12 at the work station ST3. The positioning jig 14 is operated from the work station STI along a jig pallet 60 that positions and holds predetermined parts in the front section, and jig supports 62a and 62b that support the jig pallet 60 and constitute the transport device 12. station ST
A guide plate 64 that moves up to 6 is included. Here, positioning members 66a to 66e are provided on the upper surface of the jig pallet 60.
will be placed. That is, a positioning member 66a disposed at the center of the jig pallet 60 positions and holds the stem 16a of the steering stem 16, and positioning members 66b disposed on both sides of the positioning member 66a.
The ends of the front forks 24a and 24b are positioned and held at 66c. Further, the axle shaft 38 is positioned and held by the positioning member 66d. Note that the caliber is positioned and held in the positioning member 66e in the case of a two-wheeled vehicle having a front portion with a disc brake.

On the other hand, a support shaft 68 is implanted in the center of the lower surface of the jig pallet 60, and this support shaft 68 is rotatably fitted into a socket 70 attached to the center of the upper surface of the guide trFi 64. Note that a connecting plate 72 having an engaging portion 72a formed therein is attached to the lower end of the support shaft 68.

Rollers 74a and 74b are rotatably attached to both sides of the upper surface of the guide plate 64.
4b abut on guide portions 75a and 76b extending from the jig supports 62a and 62b onto the guide plate 64, respectively. Also, rotatable rollers 78a and 78b are similarly pivoted on both sides of the lower surface of the guide plate 64, and these rollers 78a,
78b is the guide plate 6 from the jig support 62a162b.
Guide parts 80a and 80b protruding toward the lower surface of 4.
comes into contact with. Therefore, the guide plate 64 has rollers 74a, 7
jig support 62a via 4b and 73a, 78b
, 62b, and is configured to be movable in the longitudinal direction of the conveying device 12. Note that the jig support 62a,
62b as a component is configured to transport the positioning jig 14 from the work station STI to the work station ST6 by a transport motor (not shown).

On the other hand, the rotation mechanism 56 disposed in the transfer device 12 at the work station ST3 is a rotary actuator 8 that rotates the jig pallet 60 about a support shaft 68.
2 and a cylinder portion 84 that raises and lowers the rotary actuator 82 toward the guide plate 64. The cylinder portion 84 is mounted on a support base 86, and the rotary actuator 82 is mounted to the upper end of the cylinder rod 88 via a mounting plate 90. In addition,
On both sides of the cylinder part 84, sleeves 92 are attached at their upper ends to a mounting plate 90 and whose lower ends are disposed on a support stand 86.
Guide bars 943, 9 slidably fit into a, 92b
4b is arranged. In addition, the rotary actuator 82
has a rotating shaft 96 that rotates by a predetermined angle due to air pressure, etc., and this rotating shaft 96 is connected to the engaging portion 72a formed on the connecting plate 72.
can be engaged with.

The first component supply device 42b disposed at the work station ST2 ii! It is composed of a Z stand 98 and a lift 102 that moves along a guide rail 100 that communicates between a parts storage section (not shown) and the mounting stand 98, and transports the front fender 18 to the mounting stand 98. Similarly, the first component supply device 42b disposed at the work station ST3 has a mounting table 104 on which the front forks 24a and 24b are mounted.
and a lift 108 that moves along the guide rail 106 and conveys the front forks 24a, 24b to the mounting table 104.

Further, the first component supply device 42c disposed at the work station ST4 has a mounting table 110 on which the front wheel 28 is placed, and a lift 11 that moves along the guide rail 112 and conveys the front wheel 28 to the aforementioned mounting table 110.
4, and a transfer mechanism 1 that is installed on the side of the mounting table 110 and transfers the front wheel 28 to the assembly device 54e.
It consists of 16.

Here, the configuration of the transfer mechanism 116 is shown in FIG.

That is, the transfer mechanism 116 includes a housing-like main body section 118 installed on a moving table 117. In this case, a guide rail 122a with which the moving table 117 engages is provided between the side of the mounting table 110 and the work station ST4.
, 122b are laid, and these guide rails 122
A rack 124 is arranged between a and 122b. On the other hand, the main body portion 118 has a moving motor 126, and a pinion 13 that is pivoted on a drive shaft 128 of this moving motor 126.
0 meshes with the rack 124. Therefore, the transfer mechanism 1
16 is configured to be movable between the mounting table 110 and the work stage line ST4 along the guide rails 122a and 122b under the driving action of a moving motor 126.

On the other hand, guide rails 132a and 132b extending in the vertical direction are provided on the front surface of the main body 118 on the side of the mounting table 110, and these guide rails 132a.

Elevating table 134 engages with 132b. Here, a lifting cylinder 136 is attached to the upper surface of the main body 11B, and a cylinder loft 138 of this lifting cylinder 136
is connected to the lifting table 134 via a connecting plate 140. Therefore, the lifting table 134 is moved by the guide rails 132a and 1 under the driving action of the lifting cylinder 136.
It is configured to be movable in the vertical direction along 32b. Note that there are two wires 142 on the upper surface of the lifting table 134.
a, 142b are attached, and these wires 1
The other ends 42a, 142b are connected to a weight (not shown) disposed on the back surface of the main body 118 via guide rollers 144a, 144b attached to the upper surface of the main body 118.

As a result, the elevating table 134 has wires 142a,
It is suspended and supported by 142b.

A guide rail 146a is provided on the front surface of the lifting table 134 and extends in the moving direction of the transfer mechanism 116.

146b are arranged, and these guide rails 146a.

146b has a pair of opposing arm members 148a, 1
One end of each of 48b engages. In addition, arm member 148
Hands 150a and 150b for gripping the outer circumference of the front wheel 28 are attached to the other ends of the wheels a and 148b.

In this case, the hands 150a, 150b are configured to be rotatable in the direction of the arrow by hand rotation motors 152a, 152b.

Note that a pair of opposing support plates 154a and 154b are installed in the center of the front surface of the lifting table 134.

Arm members 14 are attached to these support plates 154a and 154b.
Ball screws 156a, 156 screwed into 8a, 148b
h, and bevel gears 158a and 158b are respectively attached to each end. Here, the ball screws 156a and 156b are configured so that the directions in which the screws advance are opposite to each other. On the other hand, an arm drive motor 160 is disposed in the main body 118, and a drive shaft 162 of the arm drive motor 160 protrudes between the support plates 154a and 154b via the lifting table 134, and the bevel gear is connected to the end of the drive shaft 162 of the arm drive motor 160. A bevel gear 164 that meshes with 158a and 158b is pivotally attached. Therefore, the arm members 148a, 148b are configured to approach or separate from each other in the direction of the arrow through the ball screws 156a, 156b under the driving action of the arm drive motor 160.

The second component supply devices 44a to 44c each have a fender bolt 20. Fork bolt 26 and axle nut 4
0 to each work station ST2 to ST4, and is preferably constructed from a known parts feeder.

The assembly devices 54a to 54g are constructed as shown in FIG. In this case, since the assembling devices 54a to 54g are composed of the same orthogonal robot that differs only in their working hands, the assembling device 54a will be explained below, and the configurations of the assembling devices 54b to 54g will not be explained. Omitted.

So, assembly bag! 54a is a moving table 166 that moves along the guide member 50a, and the moving table 166.
a first arm member 168 that moves along the lower end of the first arm member 168; a second arm member 170 that moves along the lower end of the first arm member 168; It basically consists of a hand holding section 174 that holds a hand 172.

Guide rails 176a and 176b are arranged along the longitudinal direction of the guide member 50a, and the moving table 166 engages with these guide rails 176a and 176b. A table moving motor 178 and a first arm moving motor 180 are attached to the moving table 166, and a pinion (not shown) is attached to the drive shaft of the table moving motor 178, and this pinion is connected to the guide rail. 1
It meshes with a rack 181 disposed between L76a and L76b. Therefore, the moving table 166 is configured to be movable along the guide member 50a under the driving action of the table moving motor 178.

The first arm member 168 engages with a guide rail (not shown) provided to extend vertically along the movable table 166. In this case, a rack 182 is disposed on the side of the first arm member 168 in parallel with the guide rail, and this rack 182 is connected to the first arm moving motor 180.
A pinion (not shown) that is pivotally attached to the drive shaft engages with the pinion.

Therefore, the first arm member 168 is configured to be movable in the vertical direction along the moving table 166 under the driving action of the first arm moving motor 180.

Guide rails 184a and 184b are arranged along the longitudinal direction of the second arm member 170, and the first arm member 1 is disposed on these guide rails 184a and 184b.
The lower end of 68 is engaged. Note that the first arm member 168
A second arm moving motor 186 is installed inside the lower end of the second arm moving motor 186, and a pinion (not shown) that is pivotally attached to the drive shaft of the second arm moving motor 186 is attached to a guide rail 184a,
It meshes with a rack 188 disposed between 184b and 184b. Therefore, the second arm member 170 is moved by the second arm moving motor 1.
The first arm member 168 is configured to be movable under the driving action of the first arm member 86 .

Here, a hand holding section 174 is attached to the end of the second arm member 170. In this case, the hand holding part 174 is configured to be rotatable relative to the second arm by a holding part rotation motor 190 built into the end of the second arm member 170. Further, the hand holding portion 174 includes a working hand 1.
72 is attached in an exchangeable state, and this working hand 1
72 is configured to be rotatable relative to the hand holder 174 by a hand rotation motor 192 attached to the hand holder 174 .

Note that the moving table 166 and the first arm member 168, the first arm member 168 and the second arm member 170, and the
The arm member 170 and the hand holding section 174 are connected by connection cables 194a to 194c, respectively, and are connected to an air actuator or other drive source (not shown).

The assembly system for the front part of a two-wheeled vehicle for carrying out the method of the present invention is constructed as described above, and its operation and effects will be explained next.

First, a predetermined component is positioned on the positioning jig 14 at the work station STI. That is,
As shown in FIG. 3, the positioning member 66a of the jig bullet 60 has the steering stem 16 in an inverted state.
That is, the vehicle is positioned and held in an inverted state compared to the normal running state. Further, the axle shaft 38 is positioned and held by the positioning member 66d. In addition, in the case of a two-wheeled vehicle having a front portion with a disc brake, a caliper is positioned and held by the positioning member 66e. The positioning jig 14 holding these parts is then transported to the work station ST2 by the transport device 12.

At work station ST2, the front fender 18 is attached to the steering stem 16. That is, the front fender 18 is connected to the first component supply device 42.
The component is transported from a component storage section (not shown) to a mounting table 98 via a guide rail 100 by a lift 102 constituting part a. The front fender 1B placed on the mounting table 98 is gripped by the assembly device 54a and positioned on the mounting portion 16b of the steering stem 16.

Here, the hand holding portion 174 of the assembly bag W54a has a working hand 17 for gripping the front fender 18.
2 is installed. The assembly device 54a grips the front fender 18 with the working hand 172.
The working hand 172 is moved in the directions of arrows X, Y, and Z under the driving action of the table moving motor 178, the first arm moving motor 180, and the second arm moving motor 186, and the front fender 18 is steered. The mounting portion 16b of the stem 16 is positioned at a predetermined position (see FIG. 5).

Therefore, the assembly device 54b grasps the fender bolt 20 from the second component supply device 44a, moves along the guide member 52a, and performs a tightening operation on the mounting portion 16b of the front fender 18. In this case, the hand holding portion 174 of the assembly device 54b has a working hand 172 for tightening the port.
is installed.

Note that the hand holding portions 174 of the assembling devices 54a and 54b
The working hand 172 is rotated in the directions of arrows α and β as necessary under the driving action of the holding part rotation motor 190 and the hand rotation motor 192 to control the posture of the front fender 18 or the fender port 20. I do.

After completing the assembly work of the front fender 18, the positioning jig 14 is then transported to the work station ST3. At work station ST3, the front forks 24a, 24b are assembled to the steering stem 16. That is, the front forks 24a, 24
b is conveyed to the mounting table 104 via the guide rail 106 by a lift 108 that constitutes the first component supply device 42b. The assembly device 54c then guides the guide member 50b.
First, the front fork 24a on the mounting table 104 is gripped by the working hand 172, and the front fork 24a is attached to the holding portion 22a of the steering stem 16 which is positioned and held on the positioning jig 14. Insert the end. In this case, the end portion of the front fork 24a is positioned and held by fitting into the positioning member 66b of the jig pallet 60 via the holding portion 22a.

Next, the assembly device 54c grips the front fork 24b placed on the mounting table 104, and attaches the steering stem 1 to the front fork 24b.
Insert the end portion into the holding portion 22b of No. 6.

In this case, the end portion of the front fork 24b is connected to the positioning member 6 of the jig pallet 60 via the holding portion 22b.
It is positioned and held by fitting into 6c.

Next, the assembly bag ff54d moves along the guide member 52b while gripping the fork bolt 26 supplied from the second component supply device 44b, and the fork bolt 26 is moved along the guide member 52b.
Tighten the front fork 24a to the holding part 22.
Fix it to a.

Next, the rotation mechanism 56 waiting below the positioning jig 14
is driven. That is, in FIG. 3, when the cylinder portion 84 is driven and its cylinder rod 88 rises in the direction of the arrow, the cylinder rod 88 is moved through the mounting plate 90.
The rotary actuator 82 attached to the positioning jig 8 moves upward in the direction of the arrow toward the guide plate 64 of the positioning jig 14.
The rotation shaft 96 of the rotary actuator 82 fits into the retaining portion 72a of the connecting plate 72 attached to the support shaft 68 of the jig pallet 60. Next, the rotary actuator 8
2 is driven, the rotation shaft 96 rotates, and the jig pallet 60 rotates by a predetermined amount around the support shaft 68. In this case, the jig pallet 60 is located at the work station ST.
3, it is rotated 180°.

That is, the steering stem 16 is positioned and held by the positioning member 66a by the rotation of the jig pallet 60.
is rotated 180'' around the stem 16a. Then, the fork bolt 26 is tightened by the assembling device 54d to fix the front fork 24b to the holding portion 22b.

Here, since the assembling device 54d can tighten the front forks 24a and 24b from the same direction by rotating the jig pallet 60, interference between the assembling device 54d and the front forks 24a and 24b can be avoided. This can be easily prevented.

When the assembling work of the front forks 24a, 24b is completed, the cylinder portion 84 constituting the rotation mechanism 56 is driven, and the rotary actuator 82 is lowered in the direction of the arrow. As a result, the rotation mechanism 56 and the positioning jig 14 are separated. Next, the positioning jig 14 with the front forks 24a and 24b assembled thereon is transported by the transport device 12 to the work station ST4.

A first component supply device 4 is installed on the side of the work station ST4.
2c is arranged, and a front wheel 28 is carried by a lift 114 from a parts storage section (not shown) via a guide rail 112 and placed on the stand 110 in a sideways state.

Thereupon, the front wheel 28 which has been lifted up by 11 units and 10 units by @'H1 unit is gripped by the transfer mechanism 116 shown in FIG. 4 and transferred toward the work station ST4. That is, the arm drive motor 16 in the transfer mechanism 116
0 is driven, a bevel gear 164 pivotally attached to the drive shaft 162 rotates, and the bevel gear 158a meshes with this bevel gear 164.

Ball screws 156a and 156b rotate via 158b.

Therefore, the arm members L48a and 148b screwed into the ball screws 156a and 156b are connected to the guide rail 14.
6a.

146b in the directions of the arrows. in this case,
The arm drive motor 160 is connected to the arm member 148a.

By driving 148b close to each other,! 1 unit 1
The front wheel 28 placed on the front wheel 10 has hands 150 attached to the ends of the arm members 148a and 148b.
It is held between a and 150b.

Next, the lifting table 134 supporting the arm members 148a, 148b is moved to the guide rails 132a, 13 via the connecting plate 140 under the driving action of the lifting cylinder 136.
2b in the direction of the arrow. In this case, the lifting table 134 is held suspended in a stable state by a weight (not shown) via the wires 142a and L42b. Then, when the moving motor 126 is driven, the rack 12
4 rotates, and the transfer mechanism 116
starts moving along guide rails 122a, 122b toward work station ST4. Note that a collar 30 and a brake panel 32 are attached to the front wheel 28 by an assembling device (not shown).

Next, after the transfer mechanism 116 moves a predetermined amount toward the work station ST4, the hand rotation motor 152a,
Hand 150a under the driving action of 152b.

150b is rotated in the direction of the arrow, and the front wheel 28 is brought into an upright state as shown by the two-dot chain line in FIG. Then, the assembly device 54e moves along the guide member 50c, grips the front wheel 28 with its working hand 172, and positions it between the front forks 24a and 24b on the positioning jig 14.

Next, the assembly device 5 disposed at the work station ST4
4f moves along the guide bar 52c, grips the axle shaft 38 that is positioned and held by the positioning member 66d of the jig pallet 60, and holds the axle shaft 38 between the holding part 36a of the front fork 24a and the collar 3.
0 through the shaft portion 28a of the front wheel 28, and further through the brake panel 32 into the holding portion 36b of the front fork 24b. On the other hand, the assembly device 54g receives the axle nut 4 from the second component supply device 44C.
0 and screws the axle nut 40 onto the end of the axle shaft 40 protruding from the holding portion 36b, thereby connecting the front forks 24a, 24b and the front wheel 28.

In addition, in the work stage Shin ST5, a caliper is installed in the case of a two-wheeled vehicle with a front section equipped with a disc brake. That is, the caliper is transported to the work station ST5 while being positioned and held by the positioning member 66e of the positioning jig 14. On the other hand, at work station ST5, an assembling device (not shown) is movably disposed on the guide member 52c, and the caliper is attached to the front fork 24b by the assembling device.

The front part with the parts assembled as described above is transported together with the positioning jig 14 to the work station ST6 by the transport device 12, and then transferred and mounted on the frame of the two-wheeled vehicle.

As described above, according to the present invention, the steering stem positioned in an inverted state on the jig device is transported to a predetermined work position by the transport device, and the parts supplied from the parts supply device are assembled at the work position. The steering stem is assembled to the steering stem by a device, and the steering stem is rotated by the jig device, so that the working state of the steering stem can be changed.

Therefore, it becomes possible to automatically assemble the front section on a highly functional line, and it is possible to achieve unmanned production lines. In addition, by rotating the jig device, the posture of the steering stem can be changed to a predetermined state at the working position, which not only realizes an extremely functional line and is economical, but also allows for a wide range of applications with different working conditions. It is possible to provide an assembly system that can be easily applied to the assembly of parts. Therefore, it is possible to respond quickly to model changes of motorcycles, etc., and since the steering stem is transported to a predetermined work position with the steering stem positioned in advance by a jig device, its positioning is ensured and assembly is possible. This provides the advantage that the work of assembling each component using the device is extremely easy.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to these embodiments, and various improvements and changes in design can be made without departing from the gist of the present invention. Of course.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing an assembly system according to the present invention, FIG. 2 is an exploded view of the front part of a two-wheeled vehicle assembled by the assembly system according to the present invention, and FIG. 3 is a jig device in the assembly system according to the present invention. FIG. 4 is a perspective view showing the front wheel transfer mechanism in the assembly system according to the present invention, and FIG. 5 is a perspective view showing the assembly device in the assembly system according to the present invention. be.

Claims (7)

[Claims] (1) A first step of positioning and fixing the conveyed steering stem in an inverted state, a second step of assembling one or more parts to the steering stem, and then rotating the steering stem by a predetermined angle. A method for assembling a front part of a two-wheeled vehicle, comprising a third step of assembling one or more parts. (2) a transport device that transports the steering stem to a working position; a jig device that positions the steering stem in an inverted state and rotates to change the posture of the steering stem; An assembly system for a front part of a two-wheeled vehicle, comprising a parts supply device that supplies parts to be arranged and assembled to the steering stem, and an assembly device that assembles the parts to the steering stem. (3) In the system according to claim 2,
The jig device includes a positioning jig that is transported to a predetermined work position by a transport device with the steering stem positioned upside down, and a rotation mechanism that is placed at the predetermined work position and rotates the positioning jig. An assembly system for the front part of a motorcycle. (4) In the system according to claim 3,
The rotation mechanism includes a rotation means for rotating a positioning jig, and a displacement means for displacing the rotation means toward the positioning jig and engaging with the positioning jig. assembly system. (5) In the system according to claim 4,
A two-wheeled vehicle front assembly system in which the rotation mechanism is a rotary actuator and the displacement means is a cylinder. (6) In the system according to claim 2,
The parts supply device includes a gripping means for gripping a part, an attitude changing means for changing the orientation of the part gripped by the gripping means, and a transfer mechanism for transporting the part to a predetermined working position. Assembly system for the front part of a motorcycle. (7) In the system according to claim 2,
The assembly device is an assembly system for the front part of a two-wheeled vehicle, consisting of a Cartesian robot with interchangeable working hands.