JPH09267784A - Deformation correcting device for two-wheeler frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform constant and high accurate deformation correcting work, by detecting a position deviation amount generated within a range of freedom degree of a head pipe held to a head pipe clamp mechanism, and performing operation control of a tilt/turn energizing means based on this detection signal. SOLUTION: A position deviation of a head pipe 101 is detected in a position detection means, and each change amount of a head pipe clamp mechanism 2 and a pivot clamp mechanism 3 is determined by an operation detection means. So as to conform these deviation amounts to that detected from each deviation detection means, operation control of a tilt/turn energization means 4, 5 is performed. In a two-wheeler frame, when a load is applied from these tilt/turn energization means 4, 5, elastic plastic deformation is generated in a direction correcting strain. Thereafter, when applying a load is released, a return phenomenon is generated, so as to leave the frame as it is for a fixed time in a no-load condition. Thereafter, till correcting to an ideal position, this operation is repeatedly performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-wheeled vehicle frame strain relief device, and more particularly to a two-wheeled vehicle frame strain relief device for removing deformation caused in a welding process during manufacturing of a two-wheel vehicle frame.

[0002]

2. Description of the Related Art Conventionally, a motorcycle frame has a skeleton of a predetermined shape formed by joining a plurality of members by welding or the like, and each joint portion of the motorcycle frame is deformed by heat during welding. There is a case.

In particular, when deformation occurs around the front fork holding the front wheel and the cylindrical head pipe which is rotatably engaged with the handle, the front wheel and the rear wheel of the motorcycle are arranged in a pre-calculated positional relationship. As a result, riding comfort, balance and operability may be adversely affected.

FIG. 15 shows a perspective view of the motorcycle frame 100. A head pipe 101 is fixedly mounted on the right end portion of the motorcycle frame 100 in the drawing. Further, reference numeral 102 designates two swing arm pivots that engage with a swing arm 103 that holds a rear wheel in a rotatable manner (one is not shown).

In the two-wheeled vehicle frame 100, three types of twists or the like mainly occur in the head pipe 101 due to deformation caused by welding or the like. That is, the motorcycle frame 1
When a twist c around the horizontal direction b of 00 occurs,
When a twist e is formed around the front-rear direction d of the motorcycle frame 100 and in the left-right direction b of the motorcycle frame 100.
There is a case where the entire head pipe 101 is displaced in parallel along the line.

These will be described in detail with reference to FIGS. 16 shows a side view of the motorcycle frame 100 as seen from the direction of arrow A in FIG. As described above, when the head pipe 101 is twisted c about the left-right direction b of the motorcycle frame 100, the central axis a of the head pipe 101 changes in the angle α formed with the road surface. The angle α is preset in the design stage, and when such deformation occurs, the motorcycle frame 1
A two-wheeled vehicle equipped with "00" will not be able to obtain its original drivability.

FIG. 17 (A) is a front view of the motorcycle frame 100 as seen from the direction of arrow B in FIG. As described above, when the head pipe 101 is twisted e centered on the front-rear direction d of the motorcycle frame 100, the center axis a is determined by the two swing arm pivots 102.
The angle β formed with the central axis f of is not vertical.

As a result, when such a motorcycle frame 100 is equipped with front wheels 103 and rear wheels 104, FIG.
As shown in FIG. 5, the front wheels 103 are inclined with respect to the rear wheels 104, which causes inconveniences such as deterioration of balance, adverse effects on straightness and drivability.

The left-right direction b of the motorcycle frame 100
When the entire head pipe 101 is displaced in parallel along with, the central axis a does not pass through the middle of the two swing arm pivots 102 as shown in FIG.
h), based on such a motorcycle frame 100, front wheels 10
As shown in FIG. 18 (B), the front wheel 103 is displaced from the rear wheel 104 when the third wheel 3 and the rear wheel 104 are equipped, and as in the case of FIG. It causes inconvenience such as adverse effect on sex.

In order to eliminate the above inconvenience, conventionally, when the head pipe 101 is deformed such as twisted, a lever system using a bar (iron rod), a hydraulic cylinder, a hammer, etc. Deformation was corrected (distortion was corrected) by hand using the equipment.

[0011]

However, conventionally,
The distortion removing work is performed manually by the operator, and such work requires a lot of skill and experience, and requires skill. That is, since the efficiency of the strain relief work is determined by the number of such skilled workers, it is unsuitable for the strain relief work of a large amount of motorcycle frames, and is corrected by each worker who performs the strain relief work. It was difficult to quantify due to differences in accuracy and work time.

Further, since the strength of the motorcycle frame has been further improved with the recent progress in production technology, manual work using a burl or the like puts a heavy burden on the operator and is accompanied by danger and complexity. There was an inconvenience.

[0013]

It is an object of the present invention to improve the inconveniences of the prior art, to free the operator from manual work, and to distort a large amount of motorcycle frames with a constant and highly accurate strain relief. The purpose is to provide a take-off device.

[0014]

According to the first aspect of the present invention,
The head pipe clamp mechanism for holding the head pipe of the motorcycle frame with a predetermined degree of freedom, the pivot clamp mechanism for fixing and holding the two swing arm pivots of the motorcycle frame, and the head pipe clamp mechanism are held by the head pipe clamp mechanism. The tilting biasing means for tilting the head pipe in any direction, and the pivot clamp mechanism for pivoting the pivot clamp mechanism in the middle of the two swing arm pivots held by the pivot clamp mechanism and about the vertical direction of the motorcycle frame as an axis. Biasing means, tilt displacement amount detecting means for detecting a displacement amount of the head pipe clamp mechanism due to biasing of the tilt biasing means, and rotational displacement for detecting a displacement amount of the pivot clamp mechanism due to biasing of the rotary biasing means. Range of the degree of freedom of the amount detection means and the head pipe held by the head pipe clamp mechanism The position detecting means for detecting the amount of positional deviation caused by the position detecting means and the operation control means for controlling the operation of the tilt urging means and the rotation urging means based on the detection signal of the position detecting means are employed. .

In the case of the above construction, in the two-wheeled vehicle frame, the two swing arm pivots are fixed to the pivot clamp mechanism, and the head pipe is held by the head pipe clamp mechanism with a predetermined degree of freedom.

When the motorcycle frame is distorted,
The head pipe is displaced within the range of the degree of freedom. When the positional deviation of the head pipe is detected by the position detection means and output to the operation control means, the operation control means determines the respective displacement amounts of the head pipe clamp mechanism and the pivot clamp mechanism according to the positional displacement amount. Then, the operation control of the tilt urging means and the rotation urging means is performed so that these displacement amounts and the displacement amounts detected by the respective displacement detection means match.

The two-wheeled vehicle frame undergoes elasto-plastic deformation in a direction to correct the strain by applying a load from the tilt urging means and the rotation urging means for a certain period of time. After that, when the application of the load is released, the two-wheeled vehicle frame returns to the direction opposite to the direction in which the load is applied.Therefore, in order to perform the subsequent measurement of the positional deviation amount more accurately, The motorcycle frame is left unloaded for a certain period of time.

After that, the position of the head pipe is detected by the head pipe clamp mechanism, and if the head pipe is corrected to the ideal position, the strain relief work is completed. If there is a positional deviation, the strain removing work by each urging means is repeated based on this positional deviation amount.

The invention according to claim 2 has the same structure as the invention according to claim 1, and the tilting biasing means is provided on a plane where the central axes of the head pipes held by the head pipe clamp mechanism intersect. The tilt displacement is detected by biasing the head pipe from two directions intersecting each other.
The configuration is such that the amount of displacement in each direction is detected.

In the case of the above structure, the head pipe is loaded in all directions by biasing the inclination from each of the above two directions and the combined direction thereof. Further, other operations are performed in the same manner as the configuration described in claim 1.

The invention according to claim 3 has the same structure as the invention according to claim 1, and the position detecting means has outer peripheries near the upper end and the lower end of the head pipe held by the head pipe clamp mechanism. The structure is composed of two pairs of distance sensors facing each other.

In the case of the above construction, two distance sensors detect the distance to the outer peripheral surface of each of the upper end portion and the lower end portion of the head pipe. That is, the positions of the upper and lower ends of the head pipe are detected by the position coordinates of the two directions in which the distance sensors perform detection, and the tilted state of the head pipe is detected by the difference of the positions of the upper and lower ends. Also,
For other operations, the same operation control as in the first aspect of the invention is performed.

The invention according to claim 4 has the same structure as that of the invention according to claim 1, and the operation control means includes a displacement amount detected by each displacement amount detection means at the time of activation of each biasing means and each displacement amount. A storage unit that stores, as an empirical value, a change in the position of the head pipe detected by the position detecting unit before and after the actuation of the urging unit, and an inclination urging based on the empirical value of the storage unit and a detection signal of the position detecting unit. And an experience value reference function for controlling the operation of the rotation means and the rotation urging means.

In the case of the above construction, each displacement amount of the urging operation by each urging means and the change amount of the position of the head pipe due to the urging operation are detected and stored in the storage unit as an empirical value.

That is, the experience value stored in the storage unit means the displacement amount of the head pipe clamp mechanism urged by the tilt urging means and the position change amount of the head pipe due to the displacement, or the rotation urging means. 6 is data showing a relationship between a displacement amount of a biased clamp mechanism and a position change amount of a head pipe.

When the positional displacement amount of the head pipe is detected before the operation of each urging means and the empirical value of the positional variation amount approximate to this positional displacement amount is stored in the storage unit, the experience value reference function is used. The displacement amount in the operation of each biasing means is preferentially determined based on this empirical value.

When the experience value corresponding to the above does not exist, the same operation as that of the structure according to claim 1 is performed.

The present invention is intended to achieve the above-mentioned objects based on the above-mentioned respective configurations.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION A position embodiment of the present invention will be described with reference to FIGS. The present embodiment shows a two-wheeled vehicle frame strain relief device 10 for removing the strain generated in the two-wheeled vehicle frame 100 of the two-wheeled vehicle shown in FIG. 15.
Here, FIG. 1 shows the distortion removing device 10 for a motorcycle frame.
FIG. 2 is a plan view of the distortion removing device 10 for a motorcycle frame.

This strain relief device 10 for a motorcycle frame
Is a head pipe clamp mechanism 2 that holds the head pipe 101 of the motorcycle frame 100 with a predetermined degree of freedom.
And a pivot clamp mechanism 3 for fixedly holding the two swing arm pivots 102 of the motorcycle frame 100,
The head pipe clamp mechanism 2 is a central axis a of the head pipe 101 held by the head pipe clamp mechanism 2.
The tilting urging means 4 for urging (see FIG. 15) to tilt in any direction, and the pivot clamp mechanism 3 are provided between the two swing arm pivots 102 held by the tilting urging means 4 and the upper and lower sides of the motorcycle frame 100. The rotation biasing means 5 for rotating about the direction, the tilt displacement amount detecting means 6 for detecting the displacement amount of the head pipe clamp mechanism 2 by the biasing of the tilt biasing means 4, and the rotation biasing means 5. Rotational displacement amount detecting means 7 for detecting the amount of displacement of the pivot clamp mechanism 3 due to biasing, and position detecting means 8 for detecting the position of the head pipe 101 held by the head pipe clamp mechanism 2 within the range of degrees of freedom. (See FIGS. 4 to 6) and the operation control means 9 for controlling the operation of the tilt urging means 4 and the rotation urging means 5 based on the detection signal of the position detecting means 8. Further, reference numeral 1 is a support base for fixing the above-mentioned components at a predetermined position.

Each section will be described in detail below.

FIG. 3 shows the head pipe clamp mechanism 2. The head pipe clamp mechanism 2 is mainly
A clamp part 21 for holding the head pipe 101, an adjusting part 22 for moving and adjusting the clamp part 21 in the vertical and horizontal directions in FIG. 3, and a mounting table 23 on which the adjusting part 22 is slidably mounted in the horizontal direction. And a transmission arm 24 for transmitting the tilting motion from the tilting biasing means 4 to the clamp portion 21.

FIG. 4 is a sectional view of the clamp portion 21 in the front direction.
Figure 5 shows a side view. This clamp portion 21 is shown in FIG.
As shown in FIG. 2, a box body 211 having an open right side surface and a box body 2
The upper and lower end portions 11 of the box body 2 are rotatable in the left-right direction.
11, a box body holding member 212, a connecting member 213 that vertically slidably engages with the adjusting portion 22, and a bearing 214 that rotatably connects the box body holding member 212 to the connecting member 213. And have.

Since the box body holding member 212 holds the box body 211 from both side ends of the box body 211 via bearings 212A as shown in FIG. 5, the box body 211 is rotated in the direction of arrow i shown in FIG. It is possible to let. Along with this, the bearing 214 allows the box body 211 to rotate in the arrow j direction shown in FIG. 5 about the horizontal direction in FIG.

Inside the box body 211, there are provided an upper convex member 215 and a lower convex member 216 which are coaxially and vertically movable. These convex members 21
Reference numerals 5 and 216 hold the head pipes 101 by arranging the column-shaped tips thereof so as to face each other and inserting the head pipes 101 into the head pipes 101 of the motorcycle frame 100 by vertical movement.

Further, these convex members 215, 216
Both have an outer diameter of the tip portion set to be slightly smaller than the inner diameter of the head pipe 101, and play occurs with the inner wall of the head pipe 101 during insertion. Due to this play, the head pipe 101 causes the respective convex members 215, 216 to
It will be held with a degree of freedom.

Further, the upper convex member 215 and the lower convex member 216 respectively move the vertical movement urging means 2 for urging the vertical movement.
17 and 218. These vertical movement urging means 217, 218 are respectively provided with drive motors 217A, 21
8A and transmission means 217B and 218B. That is, the rotational movements of the drive motors 217A and 218A are converted into vertical movements by the screw transmission mechanism of the transmission means 217 and 218 and transmitted to the respective convex members 215 and 216. Here, a hydraulic cylinder may be used as a drive source for the vertical movement urging means 217 and 218.

In the two-wheeled vehicle frame 100, the swing arm pivot 102 is fixed and held by the pivot clamp mechanism 3 which will be described later. Therefore, when the two-wheeled vehicle frame 100 is distorted at any place, the convex members 215, 2 are formed.
16 has a central axis a
However, due to the above-mentioned play, the central axes of the convex members 215 and 216 do not coincide with each other and a positional deviation occurs (here, the distance of the positional deviation is referred to as a positional deviation amount).

The head pipe 10 held by each of the convex members 215 and 216 serves as means for detecting the amount of positional deviation.
A pair of laser displacement gauges 8 (distance sensors) are provided as position detecting means near the upper end and the lower end of 1, respectively.

As shown in FIG. 6, each pair of laser displacement meters 8 near the upper and lower ends of the head pipe 101 are arranged so that their detection directions are orthogonal to the central axis of each of the convex members 215, 216. It is installed (γ = 90 °). As a result, the relative positional deviation amount between the central axis positions of the upper end portion and the lower end portion of the head pipe 101 and the central axes of the convex members 215 and 216 is detected. And these head pipes 1
The direction in which the central axis a of the head pipe 101 is inclined is detected based on the difference in the amount of positional deviation between the upper end and the lower end of 01.

Depending on the inclination of the head pipe 101,
The tilting urging means 4 urges the box body 211 to rotate via the transmission arm 24. The transmission arm 24 is fixed to a lower portion of the box body 211 in a hanging state, and a V-shaped member 241 (shown by a broken line in FIG. 2) formed in a bifurcated shape is provided at a lower end portion of the V-shaped member 241. The end portions of the biasing arms 41, 41 of the tilting biasing means 4, 4 which will be described later are respectively connected to the both ends of the ball through the ball socket joints 41A, 41A.

The box body 211 has the bearing 21 as described above.
4, the V-shaped member 241 is rotatably held by the box body holding member 212 and the box body holding member 212. Therefore, as shown in FIG. It is movable on a spherical surface centered on the intersection of the holding member 212 and the rotation axis l.

That is, when the rotation is biased by the tilt biasing means 4, the V-shaped member 241 is moved in the direction of arrow m or n.
Direction or a combined direction thereof, and accordingly, the box body 211 rotates about the rotation axis k or the rotation axis l or rotates in the combined direction thereof to form each convex shape. Member 2
A load is applied to the head pipe 101 via the heads 15 and 216 so as to incline in all directions.

Next, the adjusting unit 22 will be described with reference to FIG. The adjustment unit 22 includes an adjustment unit main body 221 which is a housing slidably mounted on the mounting table 23, and a horizontal movement unit 222 which moves the adjustment unit main body 221 in the left-right direction with respect to the mounting table 23. And a vertically moving means 223 for vertically moving the clamp portion 21 via the connecting member 213 described above.

FIG. 8 shows the mounting table 23 viewed from the arrow C direction in FIG. 3 and the adjusting section main body 221 mounted on the mounting table 23. As shown here, guide rails 231 provided on the mounting table 23 are provided on both sides of the lower end portion of the adjustment portion main body 221.
An engaging projection 221A that engages with is provided and is guided in a constant left-right direction in FIG.

Further, FIG. 9 shows an engagement state between the adjusting portion main body 221 and the connecting member 213 as seen from the arrow D direction in FIG. As shown here, the guide rails 221 are provided on both sides of the upper and lower ends of the adjusting portion main body 221 on the connecting member 213 side.
C is provided, and the engaging plate 213A provided on the left side of the connecting member 213 is held slidably in the vertical direction in FIG.

Further, as shown in FIG. 3, a horizontal moving means 222 is arranged at the lower inside of the adjusting portion main body 231. The horizontal moving means 222 is an immovable fixing portion 224 that is fixed to the upper surface of the mounting table 23 and has a screw hole.
And the adjustment portion main body 221 is screwed into this screw hole
A horizontal movement urging shaft 225 which is rotatably held by a handle 226 and a handle 226 for urging a rotational force to the horizontal movement urging shaft 225. Further, reference numeral 221B is an elongated hole penetrating from the inside of the adjusting portion main body 221 to the mounting table 23 side, and the adjusting portion main body 221 moves with respect to the mounting table 23 within the range of the elongated hole 221B. There is.

Further, a vertical moving means 223 is arranged on the right side inside the adjusting portion main body 221.
The vertical moving means 223 is fixed to the engaging plate 213A of the connecting member 213 and has a fixed hole 227 having a screw hole.
And the adjustment portion main body 221 is screwed into this screw hole
The vertical movement urging shaft 228 rotatably held by the vertical movement urging shaft 228 and the handle 229 for urging the vertical movement urging shaft 228 with a rotational force. Further, reference numeral 221D is an elongated hole penetrating from the inside of the adjusting portion main body 221 to the connecting member 213 side, and the adjusting portion main body 2 is within the range of the elongated hole 221D.
The clamp portion 21 moves up and down with respect to 21.

As shown in FIG. 8, the mounting table 23 is formed in an inverted U-shape, and inside the U-shaped opening 232,
The pivot end of the pivot plate 31 of the pivot clamp mechanism 3, which will be described later, is adapted to pivot within a range allowed by the width of the opening 232 of the mounting table 23.

FIG. 10 shows the pivot clamp mechanism 3. 10 (A) shows a plan view of the pivot clamp mechanism 3, and FIG. 10 (B) shows the pivot clamp mechanism 3 as seen from the arrow E direction in FIG. 10 (A).

The pivot clamp mechanism 3 has one end rotatably supported on the support base 1 via the bearing 32 and the other end rotatably urged by the rotation urging means 5. A plate 31 and a holding means 33 fixedly mounted on the rotating plate 31 and holding the two swing arm pivots 102 of the two-wheeled vehicle frame 100 in a detachable manner, respectively.

The rotating plate 31 is a plate-shaped member whose width narrows toward the left side in FIG. 10A, and a substantially square through hole 31A is formed in the center thereof. The transmission arm 24 of the head pipe clamp mechanism 2 is loosely inserted into the through hole 31A, and the transmission arm 24 is rotated about the box body 211 side within the range permitted by the through hole 31A.

The holding means 33 is composed of a pin 34 inserted into each of the two swing arm pivots 102 of the two-wheeled vehicle frame 100, and a pin insertion / removal urging portion 35 for freely inserting / removing the pin 34. This holding means 3
3, the positions of the pins 34 are set so that the central part of the rotational movement of the rotary plate 31 by the bearing 32 and the intermediate part of the two swing arm pivots 102 coincide with each other.

Next, the tilt urging means 4 will be described with reference to FIG. The tilt urging means 4 are integrally provided on both upper and lower sides of the rotating plate 31 in the drawing.
Each tilting urging means 4 includes an urging arm 41 whose one end is connected to the V-shaped member 241 of the transmission arm 24 via a ball socket joint 41A, and the other end of the urging arm 41 and the ball socket. 2 through the joint 41B.
A reciprocating member 42 that can reciprocate in the left-right direction, and a drive motor 43 that is a drive source of the reciprocating member 42.
It is configured by a transmission unit (not shown) that transmits the rotational force of the drive motor 43 to the reciprocating member 42 as a reciprocating force.

Since the two reciprocating members 42 are urged by the driving motors 43 of the two tilt urging means 4 in the left-right reciprocating motion at equal distances or different distances,
The V-shaped member 241 can be moved to any position within a certain range on the spherical surface through the biasing arms 41.

As a result, the head pipe clamp mechanism 2 is moved from the movement of the V-shaped member 241 through the transmission arm 24.
The head pipe 101 held by the head pipe 101 from two directions intersecting with each other on a plane intersecting the central axis a.
The inclination is biased to 1.

Further, each tilt biasing means 4 is provided with a high-precision length measuring device (linear scale) as a tilt displacement amount detecting means 6, and the horizontal moving distance of each reciprocating moving member 42 is determined by the head pipe. The displacement amount of the clamp mechanism 2 is detected and output to the operation control means 9.

A hydraulic cylinder or the like may be used as the drive source of the tilt urging means 4 described above.

Next, the rotation urging means 5 will be described with reference to FIG. This rotation urging means 5 includes a urging arm 51 whose one end is connected to the left end of the rotation plate 31 in the drawing through a ball socket joint 51A, and the other end of the urging arm 51 and the ball. Connected via a socket joint 51B,
A reciprocating member 52 that can reciprocate vertically in FIG.
And the drive motor 5 serving as a drive source for the reciprocating member 52.
3 and a transmission unit (not shown) that transmits the rotational force of the drive motor 52 to the reciprocating member as a reciprocating force.

The drive motor 53 of the rotation urging means 5 urges the reciprocating movement of the reciprocating member 52 in the left-right direction, so that the bearing 32 is centered on the rotating plate 31 via the urging arm 51. The pivoting motion is urged.

A hydraulic cylinder or the like may be used as the drive source of the above-mentioned rotation urging means 5.

The operation control means 9 will be described with reference to FIG. The operation control means 9 includes a head pipe 10
A map storage unit 91 in which a map of displacement amounts of the tilt urging means 4 and the rotation urging means 5 corresponding to the positional deviation amount of the center axis a of 1 is stored, and the laser displacement gauge 8 of each. A control unit 9 that controls the operation of the tilt urging unit 4 and the rotation urging unit 5 according to the map of the map storage unit 91 according to the detection signal.
2 and the experience value of a combination of the change in the positional deviation amount of the head pipe 101 after the operation of the tilt urging means 4 and the rotation urging means 5 and the displacement amount of each urging means 4 and 5 at the time of the operation. And an experience value storage unit (storage unit) 93 that stores the data as needed.

Further, when the positional displacement amount of the head pipe 101 detected by each laser displacement meter 8 is close to the positional displacement amount of the experience value stored in the experience value storage unit 93, the map of the map storage unit 91 is displayed. The control unit 92 is provided with an experience value reference function 94 for controlling the operation of the biasing means 4 and 5 based on the experience value.

FIG. 12 is a flow chart showing the operation of the two-wheeled vehicle frame strain relief device 10 having the above-described configurations.
Based on this, the operation of this embodiment will be described in detail.

First, the two swing arm pivots 102 of the motorcycle frame 100 are mounted on the pivot clamp mechanism 3. In the pivot clamp mechanism 3, the two pins 3
In the state that 4 is retracted to the pin in / out biasing means 35 side,
After each swing arm pivot 102 of the motorcycle frame 100 is positioned at each pin 34, each pin 3
4 into these swing arm pivots 102,
Fix it (see FIG. 10).

Next, the head pipe 101 of the motorcycle frame 100 is mounted on the head pipe clamp mechanism 2. At this time, the clamp mechanism 2 of the head pipe clamp mechanism 2
1 is a handle 226 and a handle 229 of the adjusting unit 22.
Is operated to adjust to a predetermined position.

After that, the head pipe 101 is loosely inserted into the box body 211 of the clamp mechanism 21, and the box body 211 is inserted.
Inside, the upper convex member 215 is inserted from above, and the lower convex member 216 is inserted from below, and is sandwiched and held by these convex members 215 and 216 (FIG. 4).
See step S1).

Each laser displacement meter 8 detects the amount of positional deviation of the central axis a at the upper and lower ends of the head pipe 101 during mounting with respect to the central axes of the upper convex member 215 and the lower convex member 216. (See FIG. 6, step S2).

At this time, if the upper and lower ends of the head pipe 101 are both smaller than a predetermined value, the control unit 92 determines that there is no positional deviation, that is, the motorcycle frame 100 is not distorted. The operation of the motorcycle frame strain relief device 10 is terminated.

When a positional deviation is detected in at least one of the upper and lower ends of the head pipe 101, each laser displacement meter 8 outputs an output signal based on the detected distance to the control section 92 of the operation control means 9. Output to (step S
3).

In response to the output from the laser displacement meter 8, the experience value reference function 94 in the control unit 92 has already stored the experience value approximate to the positional deviation amount of the head pipe in the experience value storage unit 93. It searches from among the existing (step S4).

If there is an approximate empirical value, the displacement amounts of the tilt urging means 4 and the rotational urging means 5 are determined based on the empirical value, and the operation control is performed based on this. If not present, the displacement amounts of the tilt urging means 4 and the rotation urging means 5 are determined based on the map of the map storage unit 91, and the operation control is performed based on the determined displacement amounts (step S5). S6).

Here, the displacement amount of the tilt urging means 4 indicates the horizontal movement distance of the reciprocating member 42 shown in FIG. 2, and the displacement amount of the rotation urging means 5 is. , Fig. 2
The vertical movement distance of the reciprocating member 52 shown in FIG.

Here, specifically, the head pipe 10
13 and 14 show the relationship between the positional deviation amount of 1 and the direction of the load applied to correct it.

FIG. 13A is a cross-sectional view of the upper portion of the head pipe 101 with the upper convex member 215 inserted, as seen from above, and FIG. 13B is a lower convex member 216.
3 is a cross-sectional view of the head pipe 101 in a state where the is inserted, as seen from above near the lower end thereof. As shown in these,
When the upper end portion of the head pipe 101 is eccentric to the left side and the lower end portion is eccentric to the right side, as shown in FIG. 13C, the head pipe 101 is inclined so as to rotate in the arrow direction p. A load is applied by the biasing means 4.

For example, when the rotation in the arrow direction p is the rotation about the vertical direction in FIG. 2, the reciprocating members 42 of the two tilt urging means 4 are in the same direction,
Equal distance movement is encouraged. Rotation in the direction of arrow i in FIG. 4 is biased to the box body 211 via the transmission arm 24. At this time, the moving distance of each reciprocating member 42 is detected by the tilt displacement amount detecting means 6 provided for each tilt urging means 4 and is output to the operation control means 9, based on which the predetermined displacement is accurately made. Of the head pipe 10
Energized to 1.

On the other hand, when the rotation in the arrow direction p is the rotation about the left-right direction in FIG. 2, the two reciprocating members 42 of the two tilt urging means 4 are moved by different distances. Is urged, and the box body 211 is urged to rotate in the direction of arrow j in FIG. 5 via the transmission arm 24. In the same manner as described above, the displacement amount of each tilt biasing means 4 is detected by the tilt displacement amount detecting means 6, and the operation control is performed so that each accurately becomes a predetermined displacement.

FIG. 14A is a cross-sectional view of the upper portion of the head pipe 101 with the upper convex member 215 inserted, as seen from above, and FIG. 14B is the lower convex member 216.
3 is a cross-sectional view of the head pipe 101 in a state where the is inserted, as seen from above near the lower end thereof. As shown in these,
When both the upper end portion and the lower end portion of the head pipe 101 are eccentric to the upper side in the drawing, as shown in FIG. 14C, the pivotal movement in the arrow direction q is rotationally biased toward the pivot clamp mechanism 3 side. Energized by means 5.

That is, the reciprocating member 52 of the rotation urging means 5
The moving movement is urged while the moving distance is detected by the rotational displacement amount detecting means 7 provided alongside the rotating urging means 5 to the operation control means 9, so that the moving distance is accurately adjusted to a predetermined moving distance. To be As a result, the pivot clamp mechanism 3
The rotating plate 31 is rotated about the bearing 32. In this case, it is the swing arm pivot 102 side that is urged to rotate, but this relatively corrects the position of the head pipe 101.

The head pipe 101 is formed by a combination of the operations of the tilt urging means 4 and the rotation urging means 5 described above.
The correction operation is performed for any misaligned state.
At this time, the load is applied to the head pipe 101 by the tilt biasing means 4 or the rotary biasing means 5 continuously for a certain time (for example, several tens of minutes to several hours). This promotes plastic deformation of each part of the motorcycle frame 100.

After the operation of the biasing means 4 and 5 in step S5 or step S6, the two-wheeled vehicle frame 100 is left in a non-added state for a fixed time (for example, several ten minutes to several hours), and then each laser displacement is performed again. The amount of positional deviation of the head pipe 101 is detected by a total of 8 (step S
7). As a result, the elastic deformation due to the load applied by the biasing means 4 and 5 is eliminated, and the change in the head pipe 101 due to only the plastic deformation is measured.

Based on this detection, the operation control means 9 applies the load of each of the biasing means 4 and 5 to the head pipe 1.
The experience value storage unit 93 uses a combination of the change in the positional deviation amount of 01 and the displacement amounts of the biasing means 4 and 5 as a new experience value.
(Step S8).

When the upper and lower ends of the head pipe 101 are both detected to be smaller than a predetermined value by the laser displacement gauges 8, no positional deviation occurs, that is, the motorcycle frame 100 is distorted. The control unit 92 finishes the operation of the motorcycle frame strain relief device 10 in the absence of the state.

When a positional deviation is detected in at least one of the upper and lower ends of the head pipe 101, each laser displacement meter 8 outputs an output signal based on the detected distance to the control section 92 of the operation control means 9. Output to (step S
9).

After that, the operation after step S4 is performed, and the same operation is repeated until the distortion of the motorcycle frame 100 is eliminated.

In the present embodiment, since the above-mentioned operations are performed by the above-mentioned respective configurations, it is possible to automate the work for removing the distortion of the motorcycle frame 100.

Therefore, the operator can be freed from the conventional manual strain relief work, and the heavy labor burden, danger, and complexity associated with this strain relief work can be eliminated.

Further, in this embodiment, since the position detecting means 8 detects the misaligned state of the head pipe 101, by using a highly accurate laser displacement meter as the position detecting means 8, the head pipe 101 can be obtained. It has become possible to accurately detect the positional deviation of the.

Similarly, in this embodiment, since the tilt displacement amount detecting means 6 and the rotation displacement amount detecting means 7 are high-precision length measuring devices, the tilt biasing means 4 and the rotation biasing means are used. The operation of the means 5 can be controlled more precisely, and the load can be applied more accurately when the head pipe 101 is straightened.

Further, the operation of the rotation urging means 4 and the tilt urging means 5 is not based on the manual work by the experience of a plurality of workers as in the prior art but on the basis of the constantly fixed map stored in the map storage section 91. Since the control is performed, it is possible to always finish the strain removal work on the plurality of motorcycle frames 100 under the same condition, and it is possible to quantify the strain removal work. For this reason, it has become easy to incorporate the motorcycle frame into a mass production line.

Further, in this embodiment, the tilt urging means 4 is used.
However, the tilting operation with respect to the head pipe clamp mechanism 2 is
Since the two urging arms 41, 41 are in a positional relationship where they intersect each other on a plane where the central axes a of the head pipe 101 intersect with each other, the head pipe 101 has a combined direction of the arranging directions of the urging arms 41, 41. Can be tilted. That is, by this, the head pipe 101
Can be corrected by inclining in almost all directions.

In this embodiment, two pairs of laser displacement gauges 8 are provided to face the outer peripheral surfaces of the head pipe 101 held by the head pipe clamp mechanism 2 in the vicinity of the upper end and the lower end, respectively, to form a pair. The upper and lower convex members 21 in which the detection direction of each laser displacement meter 8 holds the head pipe 101
5, 216 are arranged so as to be orthogonal to the central axis. Therefore, at the upper and lower ends of the head pipe 101,
The amount of positional deviation from each of the convex members 215 and 216 can be detected from two directions orthogonal to each other, and it is possible to detect in which direction each end of the head pipe 101 is displaced by each of the detected displacements. There is.

Furthermore, in the present embodiment, the displacement amount of each biasing means 4 and 5 and the head pipe 1 by this each time the correction operation by the tilt biasing means 4 and the rotation biasing means 5 is performed.
An experience value storage unit 93 that stores the change amount of the positional deviation of 01 as an experience value, and the tilt urging means 4 based on the experience value.
And experience value reference function 9 for controlling the operation of the rotation urging means 5
4 and 4 are provided in the operation control means 9.

The work for removing the distortion of the motorcycle frame 100 is
Even if the operation control of the tilt urging means 4 and the rotation urging means 5 is performed based on a certain map according to the position shift state of the head pipe 101, the theoretical result is obtained due to the difference in each condition during work. In such a case, the experience value based on the strain relief work actually performed is stored, the experience value is accumulated more, and the strain relief work of the head pipe 101 is performed based on this. Due to
It becomes possible to perform the strain removal work more accurately and quickly.

Here, the experience value storage unit 93 stores not only each displacement amount of the tilt urging means 4 and the rotation urging means 5 but also the time for continuing the urging of these operations as a further experience value. It may be done.

In addition, a load detection sensor is provided for each of the biasing arms 41, 51 of the tilt biasing means 4 and the rotary biasing means 5 to detect each load at the time of biasing each operation and to perform the operation. The control unit 9 may be configured to perform control so that each load has a predetermined value. Further, each load in this case may be configured to be stored in the experience value storage unit 93 as an experience value.

When a certain amount of experience values are accumulated, the displacement amount and the head pipe 1 are calculated based on these experience values.
It is desirable to form a new map with the change in the amount of positional deviation due to the correction of 01, and input this again to the map storage unit 91. This makes it possible to speed up the work of removing the distortion of the motorcycle frame.

[0098]

According to the present invention as set forth in claim 1, it is possible to automate the work of removing the distortion of the two-wheeled vehicle frame by the above-mentioned configurations. Therefore, it is possible to free the operator from the conventional manual strain relief work, and to eliminate the heavy labor burden, danger, and complication associated with this strain relief work.

Further, since the position detecting means detects the misaligned state of the head pipe, it is possible to accurately detect the positional deviation of the head pipe by using a highly accurate position detecting means. Became.

Similarly, the inclination displacement amount detecting means and the rotational displacement amount detecting means are made highly accurate, so that the operation control of the inclination urging means and the rotation urging means can be performed more precisely. Therefore, it is possible to apply the load more accurately when the head pipe is straightened.

Further, since the operation control means controls the operation of the rotation urging means and the tilt urging means according to a certain condition, rather than the conventional manual work by the experience of a plurality of workers, a plurality of two-wheeled vehicle frames. On the other hand, it is possible to always finish the strain removal work under the same conditions, and it has become possible to quantify the strain removal work. Therefore, it can be incorporated into a mass production line of motorcycle frames.

According to the second aspect of the present invention, the tilting biasing means is configured to perform the tilting operation with respect to the head pipe clamp mechanism from two directions intersecting with each other on the plane where the central axes of the head pipes intersect with each other. The head pipe can be tilted with respect to the combined direction of the directions, which allows the load to be applied so as to tilt the head pipe in almost all directions.

According to the third aspect of the invention, the position detecting means comprises two pairs of distance sensors facing the outer peripheral surfaces near the upper end and the lower end of the head pipe held by the head pipe clamp mechanism. Since the displacement of the upper end and the lower end of the head pipe is detected from two directions by a pair of distance sensors, it is possible to effectively detect in which direction each end of the head pipe is displaced by each detected displacement. Therefore, it is possible to effectively detect the inclination direction of the head pipe from the deviation state between the upper end portion and the lower end portion.

According to the fourth aspect of the present invention, the displacement amount of each biasing means and the variation amount of the positional deviation of the head pipe due to this are experienced each time the correction operation by the tilt biasing means and the rotation biasing means is performed. Since the operation control unit is provided with an experience value storage unit that stores the experience value and an experience value reference function that controls the operation of the tilt urging unit and the rotation urging unit based on the experience value, distortion of the motorcycle frame The strain relief work of the head pipe is performed based on the experience value accumulated based on the strain relief work actually performed, so that the strain relief work can be performed more accurately and quickly. .

Since the present invention is constructed and functions as described above, it is possible to provide an unprecedentedly superior strain relief device for a motorcycle frame.

[Brief description of drawings]

FIG. 1 shows a front view of an embodiment of the present invention.

FIG. 2 shows a plan view of one embodiment of the present invention.

FIG. 3 is a front view showing a head pipe clamp mechanism.

FIG. 4 is a front sectional view of a clamp part.

FIG. 5 is a side view of a clamp part.

FIG. 6 is an explanatory diagram showing the arrangement of position detecting means.

FIG. 7 is an explanatory diagram illustrating the relationship between the holding state of the box body and the rotation of the transmission arm.

FIG. 8 is a front view of the mounting table as viewed in the direction of arrow C in FIG.

9 is an explanatory view showing an engagement state of a mounting adjustment unit main body and a connecting member when viewed from a direction of an arrow D in FIG.

10 shows a pivot clamp mechanism, FIG.
FIG. 10A is a plan view of the pivot clamp mechanism, and FIG.
FIG. 10B shows the pivot clamp mechanism as seen from the direction of arrow E in FIG.

FIG. 11 is a block diagram showing operation control means. It is a front view showing a head pipe clamp mechanism.

FIG. 12 is a flowchart showing the operation of this embodiment.

FIG. 13 shows an example of a misaligned state of the head pipe, FIG. 13 (A) is a view of a cross section near the upper end of the head pipe seen from above, and FIG. 13 (B) is near the lower end of the head pipe. It is the figure which looked at the cross section from above, and Drawing 13 (C) is an explanatory view showing the direction of the load added to a head pipe.

FIG. 14 shows another example of the misaligned state of the head pipe,
14A is a view of the cross section near the upper end of the head pipe as seen from above, FIG. 14B is a view of the cross section near the lower end of the head pipe as seen from above, and FIG. It is explanatory drawing which shows the direction of the load added to a swing arm pivot.

FIG. 15 is a perspective view showing a motorcycle frame.

FIG. 16 is an explanatory diagram for explaining the relationship between the road surface and the inclination angle of the head pipe in the front-rear direction.

FIG. 17 shows an example of the distortion of the motorcycle frame that occurs in the head pipe, and FIG. 17 (A) is an explanatory diagram showing a state in which the head pipe is tilted in the left-right direction.
FIG. 6B is an explanatory diagram showing the deviation between the front wheels and the rear wheels due to this.

FIG. 18 shows another example of the distortion of the two-wheeled vehicle frame that occurs in the head pipe, and FIG. 18 (A) is an explanatory diagram showing a state in which the positional displacement of the head pipe in the horizontal direction has occurred,
FIG. 18B is an explanatory diagram showing the deviation between the front wheels and the rear wheels due to this.

[Explanation of symbols]

 2 Head Pipe Clamping Mechanism 3 Pivot Clamping Mechanism 4 Tilt Energizing Means 5 Rotating Energizing Means 6 Tilt Displacement Detecting Means (High Precision Length Measuring Instruments) 7 Rotating Displacement Detecting Means (High Precision Length Measuring Instruments) 8 Position Detection Means (laser detector) 9 Operation control means 93 Experience value storage section (storage section) 94 Experience value reference function 10 Two-wheeled vehicle frame strain relief device 100 Two-wheeled vehicle frame 101 Head pipe 102 Swing arm pivot a Central axis

Claims (4)

[Claims] 1. A head pipe clamp mechanism for holding a head pipe of a motorcycle frame with a predetermined degree of freedom,
A pivot clamp mechanism for fixedly holding the two swing arm pivots of the two-wheeled vehicle frame, and an inclination biasing means for inclining the head pipe clamp mechanism in any direction with the head pipe held by the head pipe clamp mechanism, A rotation urging means for rotating the pivot clamp mechanism about the middle of the two swing arm pivots held by the pivot clamp mechanism and the vertical direction of the two-wheeled vehicle frame as an axis, and the tilt urging means. Inclination displacement amount detecting means for detecting the displacement amount of the head pipe clamp mechanism due to the force, rotational displacement amount detecting means for detecting the displacement amount of the pivot clamp mechanism due to the urging of the rotational urging means, and the head The amount of positional deviation of the head pipe held by the pipe clamp mechanism within the range of the degrees of freedom A two-wheeled vehicle frame strain relief device comprising: position detecting means for performing detection; and operation control means for performing operation control of the tilt urging means and the rotation urging means based on a detection signal of the position detecting means. . 2. The tilt biasing means biases the head pipe from two directions intersecting with each other on a plane where central axes of the head pipes held by the head pipe clamp mechanism intersect with each other, and the tilt biases the tilts. The displacement amount detection means
The strain relief device for a motorcycle frame according to claim 1, wherein each displacement amount is detected in the two directions. 3. The position detecting means comprises two pairs of distance sensors facing the respective outer peripheral surfaces near the upper end and the lower end of the head pipe held by the head pipe clamp mechanism. The distortion removing device for a motorcycle frame according to Item 1. 4. The operation control means is provided with a displacement amount detected by each displacement amount detection means at the time of actuation of each biasing means,
A storage unit that stores, as an empirical value, the amount of change in the position of the head pipe detected by the position detecting unit before and after the actuation of each urging unit, and the empirical value of the storage unit and the detection signal of the position detecting unit. The strain relief device for a motorcycle frame according to claim 1, further comprising: an experience value reference function for controlling the operation of the tilt urging means and the rotation urging means based on the above.