JPH11197955A - Jig for motorcycle frame - Google Patents

Abstract

(57) [Summary] [Problem] To provide a jig for a motorcycle frame which is more convenient in manufacturing a motorcycle frame and which can further improve workability. SOLUTION: The jig includes a jig main body 1 and an exchange jig 3. After inserting the insertion shaft 32 of the exchange jig 3 into the insertion hole 135 of the jig main body, the lever 17 is lowered and fixed with the index plunger 172, and the exchange jig 3 is attached. Removal is performed in the reverse order. As the replacement jig, a jig according to the shape of the frame 4 or the like is used. Insert the pipe head 41 of the frame 4 into the shaft 35 from above,
When the notch 398 is inserted into the clamp block 397 by rotating the clamp plate 392, the pipe head 41
Abuts the upper end of the The frame 4 is further held by a pad 38. The frame 4 attached to the jig has a degree of freedom of rotation in three directions, swinging, turning, and rotating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for a motorcycle frame used when a frame is subjected to a process such as welding in the manufacture of a motorcycle.

[0002]

2. Description of the Related Art There are various shapes, sizes, and materials of a motorcycle frame, such as a diamond frame and a cradle frame, depending on the type, use, and material of the motorcycle. In the manufacture, it is necessary to transfer the frame for each process, and it is necessary to perform a processing operation such as welding, for example, by appropriately changing the posture of the frame or maintaining the posture. Conventionally, workability has been improved using a dedicated jig.

[0003]

However, conventional jigs are not always sufficient to support various types of frames and to easily attach and detach the frames, and the usability is not good. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a jig for a motorcycle frame that is more convenient in manufacturing a motorcycle frame and that can further improve workability.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and is a jig for holding a frame in an arbitrary posture in a motorcycle manufacturing process. And a jig provided with an engaging portion that receives from the frame and engages with the opening of the frame. Further, in the jig of the present invention, the received frame may extend around the axis extending in the up-down direction, around the first horizontal axis extending substantially in the horizontal direction, and extend substantially in the horizontal direction, and may be substantially aligned with the first horizontal axis. It is configured to be rotatable about a second horizontal axis at a right angle.

In the jig for a motorcycle according to the present invention, the engaging portion directly engages with a motorcycle frame integrated with the jig main body, and is detachable and replaceable for accommodating a frame opening having a different shape. It may be configured as a replacement jig. Further, the motorcycle jig of the present invention has been developed as a jig of a type that is mounted on a transfer device on the floor and moves, but it is possible to apply this as a suspension jig.
It is possible within the ordinary technical knowledge of a person skilled in the art.

[0006] In the present specification, the opening of the motorcycle frame refers to, for example, a tubular portion having at least one open end, such as a pipe header in a fork mounting portion for a front wheel. This does not necessarily mean that the opening in the present specification is limited to a pipe header, and if there is a portion that can insert a part of a jig and support the weight of the frame, It can be used for any part of As a modification of the jig of the present invention, a separate fixture having the above-described opening is fixed at an appropriate position of the frame, and the frame is used to fix the frame using the opening. Can also be fixed. It is convenient to arrange the first horizontal axis and the second horizontal axis so that one of them is generally parallel to the longitudinal direction of the front and rear of the motorcycle frame. It is also possible to mount at an angle to either or both of the two horizontal axes.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a jig for a motorcycle frame according to the present invention will be described with reference to the drawings. This jig for a motorcycle frame can adopt a structure that can be divided into a jig body 1 and exchange jigs 2 and 3.
The exchange jigs 2 and 3 can be attached to and detached from the jig main body 1, and can be appropriately used according to the shape and the like of the frame 4 to be held. The jig body 1 is shown in FIGS. FIG.
FIG. 2 is an exploded perspective view of main parts of the jig main body 1, and FIG. 2 is a perspective view also illustrating covers 18 a to 18 d which are screwed and cover the periphery of the jig main body 1 in a state where the components in FIG. 1 are assembled. It is. 3 to 5 are projection views or sectional views in the assembled state shown in FIG. FIG. 3 is a front view (FIG. 1).
, The covers 18a to 18d are indicated by two-dot chain lines. FIG. 4 shows the jig body 1 in FIG.
3 is a drawing partially showing only the upper part of FIG. FIG.
5 is a cross-sectional view showing a state cut along a line V-V, and shows a state in which covers 18a to 18d are attached.

In one embodiment of the present invention, a jig main body 1 is provided.
Has a jig base 11, a jig base 12, and an arm 13, as shown in FIG. The jig stand 11 has its axial direction 11
1 and is attached to a production line (not shown) such as a transfer device,
Are sequentially transferred to the next step. The jig base 12 has a cylindrical stepped portion 121 at a lower portion, and has a pair of wall portions 122 arranged at an upper portion and opposed to each other at a predetermined interval. Step 121
Is inserted into the hole 112, so that the jig base 12
Are stacked on a jig stand 11 and both are assembled. The jig base 12 is rotatable around the vertical axis of the jig base 11 (can be rotated 360 degrees). Jig stand 11
, A screw hole 123 is provided on the side of the step portion 121 of the jig base 12. The plunger 14 can be screwed into the screw hole 123 of the jig base 12 through the round hole 113 of the jig base 11 (see FIG. 3). It is fixed, and rotation (turning) around the axis in the vertical direction and detachment of the jig base are prevented.

The arm 13 has a pair of flange portions 131 which are opposed to each other at a constant interval. The distance between the flanges 131 (measured inside) is the distance between the walls 122 (measured outside).
Greater than. The flange portion 131 and the wall portion 122 of the jig base 12 are provided with round holes 132 and 124 having key grooves in the same shape so as to penetrate in substantially the horizontal direction. It is attached to the tool base 12. The arm 13 is rotatable with respect to the jig base 12 about the axis of the shaft 15 (about the axis in the substantially horizontal direction) (swingable by about 90 degrees). Frame this axis 15
A ratchet 16 can be used to lock the device at any position around it and allow it to swing. The ratchet 16 is provided with a round hole 161 having a key groove of the same shape at the center thereof along the axial direction. When assembling the jig base 12 and the arm 13, the ratchet 1
6 is disposed between a pair of wall portions 122 by a shaft 15 passing through a round hole 161 with a key groove while being sandwiched by a spacer 162. That is, the ratchet 16 is arranged at the center of the jig base 12. For this reason, the arm 13
Is compact and contributes to the weight reduction of the jig body 1.

A parallel key 163 is press-fitted into each keyway of the shaft 15 and the ratchet 16, whereby
They are integrally joined in the circumferential direction. Also, the flange portion 131
Is provided with a slit 133 which extends outward from the round hole 132 with a key groove. In the slit 133, the arm 13 and the shaft 15 are securely joined together by a male screw 136 from above (see FIG. 3). Arm 1
3, the shaft 15 and the ratchet 16 are integrally connected.
By adjusting the fastening force of the male screw 136 of the slot 133, it is possible to easily adjust the swing resistance.

A ratchet pawl 166 is rotatably attached to the upper end of the wall portion 122 of the jig base 12 by a hinge pin 164 and a spacer 165. The ratchet pawl 166 and the ratchet pawl 166 constitute a notch feed mechanism. That is, when the jig base 12 is tilted (swinged), this mechanism prevents the jig base 12 from returning in the direction opposite to the tilt direction (see FIG. 5). The hinge pins 164 have retaining rings 168 attached to both ends. Ratchet claw 16
A bolt 167 is attached to 6. With this bolt 167, the engagement between the ratchet 16 and the ratchet pawl 166 can be released. Bolt 167 is
The jig is exposed to the outside of the jig main body 1, and such release can be easily performed (see FIG. 5). That is, the change in the posture of the jig base 12 can be easily changed, and the posture can be more reliably maintained, so that the burden of the lifting operation can be reduced.

One side of the arm 13 is a plane 134,
On the upper side, an insertion hole 135 is formed. A mounting hole 136 is provided on the other side opposite to the one side, and a shoulder bolt 171 is screwed into the mounting hole 136. The shoulder bolt 171 rotatably holds the plate-like lever 17 (see FIGS. 3 to 5). In addition,
The state in which the lever 17 has rotated upward is indicated by a dashed line in FIG. The lever 17 is also fixed to the arm 13 by an index plunger 172 (see FIGS. 3 and 4) to prevent the lever 17 from coming off.

As described above, the exchange jigs 2 and 3 are used in accordance with the shape and material of the frame 4 to be held.
As an example, a case of an exchange jig 2 for an iron frame and an exchange jig 3 for an aluminum frame will be described. In addition,
The replacement jig is manufactured independently for each model and its material, and one of them is attached to the jig body 1. The exchange jig 2 for an iron frame is shown in FIGS. 6 to 8, and the exchange jig 3 for an aluminum frame is shown in FIGS. 9 to 11, respectively. The basic configuration of both is almost the same. 6 and 9
5 is a cross-sectional view corresponding to FIG. 5 (cross-sectional view of the jig main body). In both figures, the jig main body is indicated by a dashed line. 7 and 10 are plan views, and FIGS.
Is a rear view. FIG. 2 shows an exchange jig 3 for an aluminum frame.

As shown in FIGS. 2, 6 and 9, the replacement jigs 2 and 3 are provided with insertion shafts 2 outside the replacement jig bodies 21 and 31.
2, 32 are attached with screws. This insertion shaft 22,
Reference numeral 32 denotes an insertion hole 135 formed in the arm 13 of the jig main body 1 in which peripheral grooves 23 and 33 are formed on the peripheral surface.
Is to be inserted. The shapes of the insertion shafts 22 and 32 are the same whether they are for an iron frame or an aluminum frame. The procedure for attaching the replacement jigs 2 and 3 to the jig main body 1 is as follows. That is, the lever 17
Is rotated upward about the shoulder bolt 171 to insert the insertion shafts 22 and 32 into the insertion holes 135.
When the lever 7 is lowered, the lever 17 is fitted into the peripheral grooves 23 and 33, and the insertion shafts 22 and 32 do not come out of the insertion holes 135. Further, lever 1 is used with index plunger 172.
7 does not rotate. By this operation, the exchange jigs 2 and 3 are integrally connected to the jig main body 1. The procedure for removing the replacement jigs 2 and 3 from the jig main body 1 is as follows. That is, the index plunger 17
Turn 2 so that the lever 17 rotates. When the lever 17 is rotated upward, the lever 17
33, the insertion shafts 22, 32 are inserted into the insertion holes 135.
Can be pulled out of By this operation, the replacement jig 2,
3 is separated from the jig body 1.

As described above, the exchange jigs 2 and 3 and the jig body 1
Turn the index plunger 172 to attach and detach
It can be performed by a simple operation of simply rotating the lever 17 (one-touch detachment). In this embodiment,
Since the exchange jigs 2 and 3 corresponding to the frame 4 are used, it is possible to cope with many types of models. be able to. Here, the insertion shaft 2 of the exchange jigs 2 and 3
The reference numerals 2 and 32 are rotatable when inserted into the insertion holes 135 of the jig body 1. When the frame 4 is mounted, it is rotatable about the axis in the longitudinal direction of the frame (3).
Can rotate 60 degrees). The peripheral grooves 2 of the insertion shafts 22 and 32
Since the levers 3 and 33 are provided over the entire peripheral surface, even when the lever 17 is engaged with the peripheral grooves 23 and 33, the rotation thereof is not hindered (see FIGS. 6 and 9). The widths of the peripheral grooves 23 and 33 are determined in consideration of the width of the lever 17. Further, the positions and the depths of the peripheral grooves 23 and 33 may be appropriately determined according to the positional relationship between them.

Next, mounting of the frame 4 on the replacement jigs 2 and 3 will be described. Holders 24 and 34 are attached to the exchange jig bodies 21 and 31 with screws. A pipe head 41 (opening) of the frame 4, that is, a member that is positioned at the forefront of the frame 4 and wraps and holds the steering stem is attached to the holders 24 and 34. Shafts 25 and 35 for clamping the inside of the pipe head 41 are provided at the centers of the holders 24 and 34. The shafts 25 and 35 are connected to the oval grip lever 2
6 and 36, the oval grip lever 2
When the shafts 6 and 36 are rotated, the shafts 25 and 35 are rotated. The exchange jig 2 for an iron frame is formed in such a shape that the shaft is eccentrically clamped.

That is, the oval grip lever 26,
By rotating the frame 36, the frame 4 is replaced with the exchange jigs 2 and 3.
Can be attached to and detached from (a simple lever clip method), and the workability can be improved. Also, since the shafts 25 and 35 are provided upward, the frame 4 can be received from above. For this reason,
Workability can be improved by engaging the exchange jigs 2 and 3 with the pipe head 41. Further, it is not necessary to use a special tool for clamping the head pipe 41 of the frame 4, which contributes to cost reduction. Note that the holders 24 and 34 and the shafts 25 and 35 form an engaging portion.

On both sides of the exchange jig bodies 21, 31, a pair of pad mounting plates 27 bent in a U-shape are provided.
37 are attached so as to spread laterally, and pads 28 and 38 are attached to opposing surfaces (inner surfaces) of the pad attachment plates 27 and 37 (FIGS. 8 and 11). reference). That is, since the frame 4 is held from both sides thereof by the pads 28 and 38 in addition to the pipe head 41, the frame 4 can be prevented from swinging.
Its retention is more secure.

As shown in FIGS. 9 to 11, the exchange jig 3 for the aluminum frame is smaller than the exchange jig 2 for the iron frame in order to prevent the inside of the head pipe 41 from being scratched.
A large number of parts for clamping the head pipe 41 are provided. A shoulder bolt 391 is provided on the upper surface of the replacement jig body 31.
The clamp plate 392 is supported via. A spring 393 is inserted into the shoulder bolt 391, and the spring 393 is located between the upper surface and the clamp plate 392 (see FIG. 9). The clamp plate 392 is always urged by a spring 393 in a direction opposite to the upper surface. Further, it is held rotatably in a plane orthogonal to the axis of the shoulder bolt 391. A pad 394 is attached to the clamp plate 392.
Is attached, and the clamp plate 392 contacts one end 42 of the pipe head 41 of the aluminum frame via the pad 394. Similarly, a pad 395 is also attached to the holder 34, and the holder 34 is
Aluminum frame pipe head 4 via pad 395
1 is in contact with the other end 43.

At the tip of the shaft 35, a screw portion 396 is provided.
Is installed. The clamp block 397 is shown in FIG.
As shown in FIG. 11, an arc-shaped notch 398 is formed, and the notch 398 connects to the clamp plate 392. Thus, Pat 394,
395 holds the one end 42 and the other end 43 of the pipe head 41 to prevent scratches. In addition, Pat 3
In this embodiment, 94 and 395 are made of MC nylon. When the oval grip lever 36 is turned, it moves in the axial direction due to its screw pitch. However, since the clamp plate 392 and the clamp block 397 are formed with inclined portions 392a and 397a, the two can be smoothly connected. it can.

In the case of the exchange jig 3 for an aluminum frame, the mounting positional relationship between the jig main body 1 and the frame 4 is as shown in FIG. FIG. 12 shows a state in which an exchange jig 3 for an aluminum frame is attached to the jig body 1 and the frame 4 is clamped. (A) swings 90 degrees, (b) 3
A 60-degree rotation and (c) represent a 360-degree rotation, respectively. As described above, since the robot has three degrees of freedom of rotation, the work posture of the frame 4 can be arbitrarily set. In addition, even when the exchange jigs 2 and 3 are attached to the jig main body 1, it is a compact body, can reduce the equipment space, and can reduce the moving work when using the transport device. Further, the stopper at the time of swinging is also used by the flat surface 134 of the arm 13, but the jig base 12 is moved by the plunger 14 to the jig base 1.
1 and the jig base 12 can be prevented from floating.

[0022]

According to the present invention, in the manufacture of a motorcycle frame, the frame can be engaged with the jig by inserting the opening of the frame into the engagement portion from above. Can be easily performed. Also, 3
Since it has a degree of freedom of rotation in the direction, the posture can be easily changed at the time of processing such as welding to a frame, for example. Therefore, usability of the jig is further improved, and workability in manufacturing can be further improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of main components of a jig main body.

FIG. 2 is an exploded perspective view showing a state where the components in FIG. 1 are assembled.

FIG. 3 is a front view (projection diagram of arrow III in FIG. 1).

FIG. 4 is a view partially showing only an upper portion of a jig main body in FIG. 3;

FIG. 5 is a cross-sectional view showing a state cut along a line VV in FIG. 3;

FIG. 6 is a cross-sectional view illustrating an exchange jig for an iron frame corresponding to FIG. 5 (cross-sectional view of the jig main body).

FIG. 7 is a plan view of an exchange jig for an iron frame.

FIG. 8 is a rear view of an exchange jig for an iron frame.

FIG. 9 is a cross-sectional view illustrating a replacement tool for the aluminum frame, corresponding to FIG. 5 (cross-sectional view of the jig body).

FIG. 10 is a plan view of a replacement jig for an aluminum frame.

FIG. 11 is a rear view of an exchange jig for an aluminum frame.

FIGS. 12A and 12B are diagrams showing a state in which an exchange jig is attached to a jig body and a frame is clamped, wherein FIG. 12A shows a posture change due to swinging, FIG. 12B shows a posture change due to turning, and FIG. Each of them represents a change in posture due to rotation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Jig main body 11 Jig stand 12 Jig base 13 Arm 14 Plunger 15 Axis 16 Ratchet 17 Lever 2, 3 Exchange jig 22, 32 Insertion shaft 23, 33 Peripheral groove 24, 34 Holder 25, 35 Shaft 26, 36 Oval grip lever 27, 37 Pad mounting plate 28, 38 Pad 392 Clamp plate 397 Clamp block 398 Notch 4 Frame 41 Pipe head

Claims (1)

[Claims] 1. A jig for holding a frame in an arbitrary posture in a motorcycle manufacturing process, the jig including an engaging portion that receives the frame from above and engages with an opening of the frame. The frame rotates around an axis extending in the vertical direction, around a first horizontal axis extending substantially in the horizontal direction, and around a second horizontal axis extending substantially in the horizontal direction and substantially perpendicular to the first horizontal axis. A jig for a motorcycle frame, wherein the jig is configured to be movable.