JP2002274452A - Suspension assembly device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To measure relative position relation of a first assembly jig 3 for a suspension subassembly SAF on a front side and a second assembly jig 5 for a suspension subassembly SAR on a rear side without detecting the displacement of each assembly jig from a neutral position individually. SOLUTION: An arm 6 extending up to a position where it is overlapped on the second assembly jig 5 is fixed to the first assembly jig 3. The arm 6 is provided with a measuring means 7 such as a camera measuring the relative position relation of the second assembly jig 5 for the arm 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a suspension assembling apparatus for assembling front and rear suspension subassemblies to a vehicle body.

[0002]

2. Description of the Related Art Conventionally, as this type of suspension assembling apparatus, a first assembling jig for mounting a front-side suspension sub-assembly and a rear-side suspension sub-assembly are disclosed in Japanese Patent Application Laid-Open No. H11-245127. 2. Description of the Related Art It is known that a vehicle includes a second mounting jig to be mounted, and both front and rear suspension subassemblies are mounted on a vehicle body at the same mounting station.

[0003] By the way, the relative positional relationship between the front part of the vehicle body and the rear part of the vehicle body may be shifted due to an assembly error of the vehicle body. This deviation generally falls within an allowable range and does not hinder the assembly of the suspension, but in order to improve the quality, the assembly accuracy of the vehicle body is constantly measured and the data is fed back to the vehicle body assembly process, and the assembly accuracy is improved. It is hoped that it will be used for the maintenance of the facilities.

Therefore, in the above-described conventional example, the displacement of each of the assembling jigs from a predetermined neutral position is determined by a potentiometer or the like with the first and second assembling jigs positioned at the front and rear portions of the vehicle body, respectively. And the displacement of the relative positional relationship between the front and rear of the vehicle body can be measured based on the correlation between the displacement of the first mounting jig and the displacement of the second mounting jig. ing.

[0005]

In the above-mentioned conventional example, it is necessary to provide two sets of displacement detecting means, one for the first assembling jig and the other for the second assembling jig. There is.

[0006] In view of the above, it is an object of the present invention to provide a low-cost suspension assembling apparatus capable of measuring the assembly accuracy of a vehicle body.

[0007]

Means for Solving the Problems In order to solve the above problems,
The present invention includes a first mounting jig for mounting a front-side suspension sub-assembly and a second mounting jig for mounting a rear-side suspension sub-assembly. In a suspension assembling apparatus in which a subassembly is assembled to a vehicle body at the same assembling station, one of the first and second assembling jigs is attached to the other assembling jigs. The arm extending to the overlapping position is fixed, and one of the arm and the other assembling jig is provided with measuring means for measuring a relative positional relationship between the arm and the other assembling jig.

According to the present invention, the arm extending from one of the mounting jigs and the other of the two mounting jigs are positioned with the first and second mounting jigs positioned at the front and rear portions of the vehicle body, respectively. By measuring the relative positional relationship with the jig by the measuring means, the deviation of the relative positional relationship between the front part of the vehicle body and the rear part of the vehicle body can be measured immediately. Further, since it is not necessary to individually detect the displacement of the first and second assembling jigs from the neutral position, the cost is reduced.

Further, each suspension sub-assembly is adapted to be mounted on the vehicle body so as to be position-adjustable with a predetermined adjustment allowance. Even if the rear part of the vehicle body is shifted laterally with respect to the front part of the vehicle body, the suspension assembly on the front side is provided. So that the center line of the center of the vehicle in the vehicle width direction matches the center line of the center of the rear suspension assembly in the vehicle width direction.
By modifying the assembling device of the rear suspension sub-assembly, it is possible to avoid adverse effects on the running performance. Further, according to the present invention, the correction amount of the mounting position of the rear suspension sub-assembly can be immediately determined from the measurement result of the measurement means, and the correction work is facilitated.

[0010]

1 and 2 show a suspension assembling apparatus 1 provided at an assembling station for carrying a vehicle body W on a hanger conveyor (not shown). The suspension assembling apparatus 1 includes a first assembling jig 3 for a front-side suspension sub-assembly SAF provided on a front first elevating platform 2 which is raised and lowered by an X-shaped link 2a, and ascends and descends by an X-shaped link 4a. And a second assembling jig 5 for a rear suspension subassembly SAR provided on a rear elevating platform 4 on the rear side.

The front suspension sub-assembly SAF is constructed by mounting left and right front wheel suspensions SF, SF on a front sub-frame AF, and mounting an engine ENG and a transmission TM on the front sub-frame AF. , The rear suspension subassembly SAR is the rear subframe AR
And the right and left rear wheel suspensions SR, SR, and a differential gear DG connected to the transmission TM via a propeller shaft PS. Further, the upper arm SFa of the front wheel suspension SF is previously assembled to the vehicle body W (see FIG. 8).

The first and second assembling jigs 3, 5 are mounted on the first and second elevating tables 2, 4, respectively, with flat bearings 30a,
Jig bases 30 and 50 which are freely supported in any direction along the horizontal plane by 50a and flat bearings 31a and 51a are supported on the jig bases 30 and 50 so as to be freely floating in any direction along the horizontal plane. And jig bodies 31 and 51. On the upper surface of the jig body 31 of the first assembling jig 3, a pair of left and right work receivers 310 supporting the front sub-frame AF is provided.
And the work receiver 31 supporting the transmission TM
1, a plurality of guides 312 for receiving the side surfaces of the transmission TM, and the engine E on the front subframe AF.
A guide 313 for receiving the lower front surface of the NG is provided, so that the front suspension sub-assembly SAF can be stably mounted on the jig body 31. Also, on the upper surface of the jig body 51 of the second assembling jig 5, four work receivers 510 supporting the rear sub-frame AR,
A pair of left and right guides 511 for receiving the front surface of the cross beam on the front side of the rear subframe AR, and a propeller shaft PS
The jig main body 51 is provided with a rear suspension subassembly SA.
R can be stably mounted.

Further, a jig base 3 for each of the assembling jigs 3, 5 is provided.
At positions 0 and 50, the suspension subassemblies SAF and SAR placed on the jig bodies 31 and 51 are pushed in the front-rear direction, and the suspension subassemblies SAF and SAR are positioned in the jig bases 30 and 50 in the front-rear direction. The second positioning for laterally pressing the first positioning means 32, 52 and the respective suspension sub-assemblies SAF, SAR to position the respective suspension sub-assemblies SAF, SAR relative to the respective jig bases 30, 50. Means 33 and 53 are provided.

As shown in FIGS. 1 and 3, the first positioning means 32 of the first assembling jig 3 includes a front sub-frame AF.
A pair of left and right fixed rollers 32 for receiving the front surfaces of the left and right ends
0, 320 and a pressing roller 322 that is moved back and forth by a cylinder 321 to abut against the center in the lateral direction of the front sub-frame AF from behind. The first positioning means 52 of the second assembling jig 5 includes a pair of right and left fixed rollers 5 for receiving the rear surface of the cross beam on the rear side of the rear subframe AR.
20 and 520, and a pair of right and left pressing rollers 522 that contact the cross beam from the front and are moved back and forth by a cylinder 521, respectively. Thus, each assembly jig 3,5
Of the first positioning means 32, 52 of the pressing roller 322,
When the 522 is moved, the suspension sub-assemblies SAF and SAR are pushed forward and backward together with the jig bodies 31 and 51, and the cross beams of the sub-frames SA and SR abut against the fixing rollers 320 and 520 and are fixed. Roller 3
The suspension sub-assemblies SAF, SAR are precisely positioned in the front-rear direction with respect to the jig bases 30, 50 with reference to 20, 20.

The second positioning means 33, 53 of each of the first and second assembling jigs 3, 5 is a pair of right and left clamp members 330, 330 for pushing each of the sub-frames SA, SR from both right and left sides. , 530, 530. Then, the right and left clamp members 330 and 530 are moved left and right by the cylinders 331 and 531, and the racks 332 332 532 and 532 532 fixed to the left and right clamp members 330, 330 530 and 530, respectively, are shared by a common pinion 333. , 533 and the left and right clamp members 33.
The reference numerals 0, 330, 530, 530 approach and separate in the lateral direction while maintaining symmetry with respect to the longitudinal reference lines 3a, 5a at the lateral center of the jig bases 30, 50. Thus, the left and right clamp members 330, 330, 53
0, 530 in the lateral direction, the left and right suspensions SF, SF of each suspension subassembly SAF, SAR with respect to the reference lines 3a, 5a
Each suspension sub-assembly SAF, SAR can be precisely positioned in the lateral direction so that SR, SR is symmetric.

The jig base 30 of the first mounting jig 3 positions the jig base 30 in the front-rear direction with respect to the vehicle body W, and the reference line 3a of the jig base 30 is Third positioning means 34 is provided for positioning in the lateral direction so as to coincide with the vehicle length direction reference line at the center in the vehicle width direction. As shown in FIG. 4, the positioning means 34 includes a pair of left and right positioning pins 340, 340 each having a tapered portion 340a inserted into a reference hole Wb formed in a front side frame Wa on each of the left and right front portions of the vehicle body. Have been.
In addition, each positioning pin 340 is vertically movably inserted into a pin holder 341 on the jig base 30 under a light frictional force. Also, the tapered portion 340a of each positioning pin 340
Is larger than the diameter of each reference hole Wb so that each positioning pin 340 fits in each reference hole Wb without any gap on the slope of the tapered portion 340a.
Therefore, the center of each reference hole Wb and each positioning pin 340
Of the jig base 30 with respect to the vehicle body W.
Are precisely positioned in the front-rear direction and the lateral direction as described above.

The reference holes Wb, Wb of the left and right front side frames Wa, Wa may vary due to variations in the assembly accuracy of the vehicle body W.
The distance between them may deviate from the reference value. In this case, if the left and right positioning pins 340, 340 are not moved laterally with respect to the jig base 30, one of the left and right positioning pins 34
0 can be fitted concentrically with one of the left and right reference holes Wb, the other positioning pin 340 is eccentric with respect to the other reference hole Wb, and the reference line 3a of the jig base 30 is The vehicle is shifted laterally with respect to the reference line, that is, the vehicle length direction reference line OB (see FIG. 8) at the lateral center between the left and right reference holes Wb. Therefore, in the present embodiment, one of the left and right positioning pins 340 is attached to the pin holder 34 by the cylinder 342.
The racks 343 and 343 fixed to the pin holders 341 and 341 of the left and right positioning pins 340 and 340 are engaged with a common pinion 344, and the left and right positioning pins 340 and 340 are fixed to the jig base. 30 are approached and separated in the lateral direction while maintaining symmetry with respect to the reference line 3a. Thus, even if the distance between the left and right reference holes Wb, Wb deviates from the reference value, the distance between the left and right positioning pins 340, 340 is adjusted according to this distance, and the left and right positioning pins 340, 340 are adjusted.
Can be fitted concentrically into the left and right reference holes Wb, Wb, and the symmetry of the left and right positioning pins 340, 340 with respect to the reference line 30a of the jig base 30 is also ensured. The reference line 30a does not laterally deviate from the reference line OB of the vehicle body W.

The jig bases 30, 50 and the jig bodies 31, 51 of the first and second assembling jigs 3, 5 are always locked at a predetermined neutral position. A first locking mechanism 3 between the tables 2 and 4 and the jig bases 30 and 50;
5 and 55, and a second lock mechanism 36 between each jig base 30, 50 and each jig body 31, 51.
56 are interposed. The first lock mechanisms 35 and 55
As shown in FIG. 6, pins 350, 550 suspended from the lower surface of the jig bases 30, 50, and a pair of lock cylinders 352, 352, 552 sandwiching the pins 350, 550 from both sides via V blocks 351, 551. , 552, and a pair of first lock mechanisms 35, 55 is provided between each lifting table 2, 4 and each jig base 30, 50.
As shown in FIG. 7, the second lock mechanisms 36 and 56 include bottomed cylindrical blocks 360 and 560 fixed to the upper surfaces of the jig bases 30 and 50, and a guide sleeve 361 fixed to the jig bodies 31 and 51. , 561 are vertically inserted under light frictional force, and holes 360 in the bottom wall of blocks 360, 560 are provided.
a, 560a, and lock pins 362, 562 that can be fitted to the jig bases 30, 50 and the jig main body 3.
1 and 51, the second lock mechanism 36, 56
Provided in pairs. In addition, guide sleeves 361 and 561
The movable range of the jig bodies 31 and 51 is
Regulatory piece 3 for abutting and regulating the inner surface of the peripheral wall of 60,560
63, 563 are attached.

In the suspension assembling operation, first, the jig main bodies 31 and 5 of the first and second assembling jigs 3 and 5 are used.
After the front and rear suspension sub-assemblies SAF, SAR are mounted on the first and second positioning mechanisms 32, 52, the first and second positioning means 32, 52 unlock the second lock mechanisms 36, 56. The SAF and SAR are positioned with respect to the jig bases 30 and 50 in the front-rear direction and the lateral direction. By this positioning, FIG.
As shown in (A), each suspension assembly SA
Suspensions SF, SF of the left and right wheels of F, SAR,
Reference lines 3a, 5a of SR, SR jig bases 30, 50
Symmetry is ensured.

Next, the first and second lift tables 2 and 4 are raised. Then, while the jig base 30 of the first assembling jig 3 is floating by unlocking the first lock mechanism 35 on the first elevating platform 2 side, the positioning pin 340 on one side is moved to the position shown in FIG. The corresponding reference hole W on one side as shown
b, and then manually fit the positioning pin 3 on the opposite side.
40 is manually fitted into the reference hole Wb on the opposite side while adjusting the distance between the positioning pins 340. As a result, as shown in FIG.
And the reference line 3a of the jig base 30 matches the reference line OB of the vehicle body W.

Then, in this state, the front sub-frame AF is manually fastened to the vehicle body W. Here, the left and right front wheel suspensions SF, SF are positioned symmetrically with respect to the reference line 3a of the jig base 30, so that the front suspension sub-assembly SA
F to the left and right front wheels SF, SF with respect to the reference line OB of the vehicle body W.
Can be assembled to the vehicle body W in a state where the symmetry is secured, and it is possible to reliably prevent a difference between the left and right front wheels on the camber of the wheels.

On the second lift 4 side, as shown in FIG. 5, the second assembling is carried out so that the bosses Wc suspended from the vehicle body W are inserted into the respective mounting holes ARa of the rear subframe AR. The jig base 50 of the jig 5 is manually aligned by unlocking the first lock mechanism 55. Then, the rear sub-frame AR is manually bolted to the boss Wc, and the rear suspension sub-assembly SAR is assembled to the vehicle body W.

By the way, due to an assembly error of the vehicle body W, a front portion of the vehicle body to which the front suspension sub-assembly SAF is assembled and a rear suspension sub-assembly S
The relative positional relationship with the rear of the vehicle body to which the AR is mounted may be shifted. Here, the rear sub-frame AR is fastened to the boss portion Wc so that the position can be adjusted with a predetermined adjustment margin. Therefore, even if the rear portion of the vehicle body is shifted sideways or inclined in the lateral direction with respect to the front portion of the vehicle body, the center line in the vehicle width direction of the front suspension subassembly SAF and the center line in the vehicle width direction of the rear suspension subassembly SAR. By correcting the mounting position of the rear suspension sub-assembly SAR so that the above condition is satisfied, it is possible to avoid adverse effects on running performance.

In this embodiment, the front suspension sub-assembly SAF can be precisely positioned with respect to the base 30 of the first mounting jig 3 so that the center line thereof coincides with the reference line 3a of the jig base 30. Since the rear suspension subassembly SAR can be precisely positioned with respect to the jig base 50 of the second assembling jig 5 so that the center line thereof coincides with the reference line 5a of the jig base 50,
By measuring the relative positional relationship between the jig base 30 of the first assembling jig 3 and the jig base 50 of the second assembling jig 5, the assembling position of the rear suspension sub-assembly SAR is set to the center line. Can easily be corrected to match the center line of the front suspension sub-assembly SAF.

Therefore, the jig base 30 of the first assembly jig 3
The arm 6 extending to a position overlapping the jig base 50 of the second assembling jig 5 along the reference line 3a is fixed, and the left and right sides of the measuring means 1 are attached to the tip of the arm 6 via the cross member 6a. A pair of cameras 7, 7 are attached so that a pair of right and left targets 7 a, 7 a fixed to the jig base 50 of the second assembling jig 5 can be imaged by both cameras 7, 7.

According to this, from the images of the targets 7a, 7a taken by the cameras 7, 7, the arm 6, that is, the jig base 30 of the first assembling jig 3 and the jig base 30 of the second assembling jig 5 are used. It is possible to measure a relative positional relationship such as a lateral displacement with respect to the jig base 50 and a lateral inclination. Therefore, the mounting position of the rear suspension subassembly SAR can be easily corrected based on the measurement result of the relative positional relationship between the jig bases 30 and 50.

Further, each boss portion Wc is connected to the rear subframe A
In a state where the jig base 50 of the second assembling jig 5 is positioned so as to be inserted into each of the mounting holes ARa of R, the jig base 30 of the first assembling jig 3 and the second assembling jig. When the relative positional relationship between the jig base 50 and the jig base 50 is measured by the cameras 7, 7, the deviation of the relative positional relationship between the front part of the vehicle body and the rear part of the vehicle body can be immediately known from the measurement result. Therefore, the measurement result is fed back to the vehicle body assembling process, and can be used for maintaining and managing the vehicle body assembling accuracy.

Although the camera 7 is mounted on the arm 6 in the above embodiment, the camera 7 may be mounted on the jig base 50 of the second mounting jig 5 by fixing the target 7a to the arm 6. Further, the arm 6 may be fixed to the jig base 50 of the second assembling jig 5 so as to overlap the jig base 30 of the first assembling jig 3. Further, in the above embodiment, the camera 7 is used as the measuring means, but a potentiometer or the like can be used.

[0029]

As is clear from the above description, according to the present invention, the relative positional relationship between the first and second assembling jigs can be individually determined by the displacement of each assembling jig from the neutral position. Measurement can be performed without detection, and cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view of an example of the device of the present invention.

FIG. 2 is a plan view seen from above in FIG. 1;

FIG. 3 is an enlarged plan view of the assembling jig with the jig body removed.

FIG. 4 is a diagram showing an engagement state of a positioning pin provided on an assembly jig with a vehicle body.

FIG. 5 is a sectional view of a mounting portion of the rear suspension subassembly to the vehicle body.

FIG. 6 is an enlarged sectional view taken along the line VI-VI of FIG. 1;

FIG. 7 is an enlarged sectional view taken along the line VII-VII of FIG. 1;

FIG. 8A is a first assembly diagram schematically showing an assembly jig;
Diagram showing the process, (B) diagram showing the second assembly process, and (C) diagram showing the third assembly process.

[Explanation of symbols]

 W Body SAF Front side suspension sub-assembly SAR Rear side suspension sub-assembly 1 Suspension assembling device 3 First assembling jig 5 Second assembling jig 6 Arm 7 Camera (measuring means)

Continued on the front page (72) Inventor Atsushi Osada 1-10-1 Shinsayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. (72) Inventor Shigeshi Isotani 1-10-1 Shin-Sayama, Sayama-shi, Saitama Honda Engineering F term (reference) 2F069 AA17 BB21 DD12 GG04 GG07 GG45 GG58 HH30 PP01 RR05 3C030 CC02 3D114 AA04 AA05 AA07 AA15 BA27 CA06 DA05 DA06 EA12 FA16 GA02 GA06

Claims (1)

[Claims] 1. A first mounting jig for mounting a front-side suspension sub-assembly and a second mounting jig for mounting a rear-side suspension sub-assembly. In a suspension assembling apparatus in which a suspension sub-assembly is assembled to a vehicle body at the same assembling station, one of the first and second assembling jigs is attached to the other assembling jig. An arm extending to a position where the arm and the other mounting jig are fixed to each other, and a measuring means for measuring a relative positional relationship between the arm and the other mounting jig is provided on one of the arm and the other mounting jig. Suspension assembling device.