JPS6314761B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a measuring method for repairing a deformed vehicle body.

Conventionally, when repairing a vehicle body that has been deformed due to an accident, a measurement frame is inserted into the underside of the vehicle body, the measurement frame is movably adjusted to match the vehicle body, and a measurement jig is placed on the measurement frame. Either measure the position of each measurement point on the vehicle body, or place a movable base of the laser measuring device around the vehicle body, adjust the movable base to match the vehicle body, and use the laser measuring device to measure the position of the vehicle. The position of each measurement point on the body is measured, but in this conventional measurement method, a large heavy object of a size corresponding to the actual vehicle body, such as the measurement frame or moving base, is placed on the vehicle body. There was a difficult task of adjusting the movement according to the situation, and it was not easy to measure for correction.

The present invention was made in view of these points,
This facilitates measurement work when modifying a vehicle body.

Next, a first embodiment of the present invention will be described based on FIGS. 1 to 6.

A mount frame 3 equipped with a clamp 2 of a vehicle body 1 is fixed to the floor surface. Also, this mount frame 3
The inner frames 4 and 5 are fixed in a cross shape inside the mount frame 3, and the mount frame 3 is divided into four parts. In addition, four reducing machines 6 are installed in the vertical inner frame 5, each of which takes charge of the four divided areas.
Provide one.

This reduction machine 6 has a base 7 fixed to the inner frame 5.
A support plate 8 is provided horizontally protruding from the support plate 8, and an outer rod 11 is rotatably supported on this support plate 8 via a universal bearing 9 with spherical support, and an inner rod 12 is placed inside the outer rod 11. One end of a link 13 is rotatably attached to the upper end of the outer rod 11, and the base end of a measurement detection rod 14 is rotatably attached to the other end of this link 13. The middle part of the measurement detection rod 14 is rotatably supported at the upper end of the inner rod 12, and a detection end 15 is bent at the tip of the measurement detection rod 14. A link 16 and a measuring rod 17 are attached to the lower end and the lower end of the inner rod 12.
A take-out end 18 is provided at the tip of this measuring take-out rod 17.
from the base 7 to the take-out end 1.
A base 19 of the reduced space is removably attached horizontally below the spacer 8. In addition, the above link 1
3. Make sure that the triangle formed by the upper part of the measurement detection rod 14 and the inner rod 12 is equal to the triangle formed by the lower part of the link 16, the measurement extraction rod 17, and the inner rod 12, and
The length between the intermediate shaft support 21 and the extraction end 18 of No. 7 is set to a reduction ratio of the length between the intermediate shaft support 22 and the detection end 15 of the measurement detection rod 14.

Further, a measurement indicator 23 is detachably attached to the extraction end 18 of the measurement extraction rod 17 by means of a female screw 25 which is screwed into the mounting screw portion 24 of the measurement indicator needle 23.

Then, the detection end 15 of the reduction machine 6 is applied to a predetermined measurement point on the vehicle body 1, and this measurement point is three-dimensionally indicated on the substrate 19 in the reduction space with the measurement indicator 23, and this measurement point is The needle 23 is fixed on the substrate 19 by the holder 26 so as to maintain its state.

This holder 26 includes a magnetic base 27 that attracts the substrate 19, and a cylindrical portion 2 of this base 27.
Rod 29 moves up and down relative to 8, and this rod 2
Rod 31 that rises and falls relative to 9, and this rod 3
The rod 29 is fixed with a screw 33, the rod 31 is fixed with a screw 34, and the holding part 32 is fixed with a screw 34. The rotation is fixed by a screw 35, and the measurement indicator needle 23 fitted inside is tightened by a screw 36.

After the measurement pointer 23 is maintained in a fixed position by the holder 26, the female screw 25 is removed to release the pointer 23 from the measurement take-out rod 17.

Such work is performed for a plurality of measurement points in each of the four divided regions of the vehicle body 1 by the four reduction machines 6, and the measurement pointer 23 corresponding to each measurement point is reduced on the four substrates 19. and set it up.

Since these four boards 19 are small,
Each can be easily removed from the base 7, held, and put together on a desk or the like. That is, each measurement point of the vehicle body 1 is indicated in a reduced form on the composite substrate 19 with the tip of the indicator needle 23 via the holder 26.

Therefore, by observing each indicator needle 23, the degree of deformation at each measurement point of the vehicle body 1 can be seen, but in order to objectively observe the degree of deformation,
A plurality of standard pointers 41 are provided on the top to indicate accurate positions corresponding to each of the measurement points. A frame-shaped base 42 of the standard indicator 41 can be rotated in any direction by a ball joint 43, and its height can be adjusted by a vertical movement shaft 44. 45 and 46 are fixing screws thereof.

Therefore, by adjusting the ball joint 43 and the vertical movement shaft 44, the base 42 can be movably adjusted relative to the base plate 19, and the screws 45, 4 can be adjusted in an optimal state.
6 to fix this base 42. This optimal state is a state in which the tip of each measurement indicator 23 and the tip of each standard indicator 41 are uniformly aligned as a whole, and an undamaged portion of the vehicle body 1, for example, the cabin. The measurement pointer 23 that indicates the measurement point and the corresponding standard pointer 41 may be made to coincide. Note that this work is easy because it can be performed on a reduced version of the actual vehicle body 1.

Further, each pointing point P of the standard pointing needle 41 after the base movable adjustment is compared with each measuring point of the vehicle body 1 via the reduction machine 6.

That is, the tip of each measurement indicator 23 is aligned with each indicator point P of the standard indicator 41, and the base 42 of the standard indicator 41 is removed from the substrate 19, and the tip of each measurement indicator 23 is removed. The V-groove 52 at the upper end of the positioning stand 51 is fitted into the positioning stand 51, and each of the positioning stands 51 is installed on the board 19, each of the measurement indicator needles 23 and the holder 26 are removed from the board 19, and then the four boards 19 are
is disassembled and each board 19 is distributed and installed in the original position of the stand frame 3, a displacement detector 61 is attached to the take-out end 18 of the reduction machine 6, and the tip 62 of this displacement detector 61 is inserted into the V-groove. 52, and this fitted portion is attracted to each other by a magnet at that portion, and the detection end 15 of the reducer 6 is attracted to a corresponding measurement point on the vehicle body 1 by a magnet or the like.

The positioning stand 51 includes a magnetic base 53 that attracts the substrate 19, and a magnetic base 53 that attracts the substrate 19.
It consists of a rod 55 that moves up and down with respect to the cylindrical portion 54 of No. 3, and a receiving shaft 57 provided at the upper end of this rod 55 via a ball joint 56 so as to be rotatable in any direction. The V-groove 52 is formed at the tip, and the rod 55 and bearing shaft 57 are fixed after adjustment with screws 58 and 59, respectively.

Further, in the displacement detector 61, the main body of a direct-acting potentiometer 64 is fixed to the mounting screw portion 63, and the main body of a rotary-acting potentiometer 66 is fixed to the tip of the direct-acting shaft 65 of this potentiometer 64. The main body of a rotary potentiometer 68 is fixed to the tip of the rotary shaft 67 of this potentiometer 66 in a direction perpendicular to the rotary potentiometer 66. A shaft portion 72 is fixed to a rotating shaft 69 of the displacement detector 61 via a mounting portion 71, and the total length from the mounting screw portion 63 of this displacement detector 61 to the tip 62 of the shaft portion 72 is equal to The length is equal to the total length from the threaded portion 24 to the tip.

In this way, the measuring rod 17 of the reducing machine 6
The tip 62 on the side of
Since the displacement detector 6 is located at a measurement point where there is a risk of deformation, the displacement detector 6 is
1 3 degrees of freedom potentiometer 64, 66, 6
8 electrically outputs a three-dimensional displacement signal. Moreover, since the outputs of the potentiometers 64, 66, and 68 can be taken out at the same time when the vehicle body 1 is being corrected, it is possible to know in what direction and by what amount the measurement point of the vehicle body 1 should be corrected while making the correction. In addition, each of the above potentiometers 64, 66,
The output signal of 68 may be displayed by an indicator through a bridge circuit or the like.

Further, as another embodiment of the measurement indicator 23,
A measurement indicator needle body 81 with a stand shown in FIGS. 7 and 8 may also be used. This measurement indicator needle body 81 with a stand has a rod 84 fitted into a cylindrical portion 83 of a magnetic base 82 which is attracted to the substrate 19 so as to be movable up and down, and a universal joint 85 attached to the upper end of the rod 84. Measuring indicator needle 8
6 is rotatable in any direction, and the screw 8
7 and 88 to fix the rod 84 and ball joint 85.

When using this measurement indicator needle body 81 with a stand, a suction rod 91 is provided at the extraction end 18 of the measurement extraction rod 17 of the reducing machine 6 with a female thread 25, and the V groove 92 at the tip of this suction rod 91 is inserted into the The tip 89 of the measurement indicator 86 is fitted, and the indicator needle 86 is attracted by the magnet at that part, and the indicator needle body 81 is suspended.

Then, using the reduction machine 6, the vehicle body 1 is
Each measurement point is indicated on the substrate 19 in the reduced space with the tip 89 of the measurement indicator needle body 81 with a stand attached to the suction rod 91, and the base 82 of the stand of this indicator needle body 81 is attached to the substrate 19. The tip 89 of the indicator needle 86 is fixed in place by grounding and fixing the screws 87 and 88. Then, each board 19 is removed from the pedestal frame 3 and gathered together, and the board 19 is placed on top of the board 19. Standard indicator needle 41
A base 42 is provided, and the base 42 is movably adjusted and fixed in an optimal state so that the pointing point P of the standard indicator needle 41 and the tip 89 of the measuring indicator needle 86 match as uniformly as possible. The tip 89 of the measuring pointer 86 is corrected to accurately match the pointing point P of the standard pointer 41, and each board 19 on which the corrected measuring pointer 86 is installed is disassembled and attached to the mount frame 3. Then, each point P of the standard pointer 41 indicated by the tip 89 of the measurement pointer 86 by the reducer 6 and each measurement point of the vehicle body 1 are compared and examined in the same way as in the embodiment. The displacement detector 95 used in this comparative study consists of potentiometers 96, 97, and 98 with three degrees of freedom like the displacement detector 61, and the total length of the displacement detector 95 is equal to the total length of the suction rod 91. A V-groove 99 of a magnet is provided at the tip of the displacement detector 95 to fit and attract the tip 89 of the measurement indicator needle 81 with a stand.

Note that the measurement indicator needle body 81 with a stand may be electrically locked using an electromagnetic mechanism or the like instead of the screws 87 and 88.

Next, a second embodiment of the present invention is shown in FIGS. 9 to 11.
This will be explained based on the diagram.

The shrinking machine 101 of this second embodiment has a main body 102
For example, the center of the reference position a, b, c, d on the floor
The main body 102 is installed facing in a predetermined direction, and an outer rod 104 is provided on the main body 102 so as to be rotatable in any direction via a universal bearing 103. A rod 105, a link 106 and a measuring detection rod 107 are provided, and a link 108 and a measuring rod 109 are also provided.
A three-dimensional coordinate detector 112 is connected to the tip of the fixed shaft 11 through a universal joint 111.
3, the main body of the rotary potentiometer 114 is fixed horizontally, and the rotary potentiometer 114
The main body of another rotary potentiometer 117 is vertically fixed to the rotary shaft 115 of the rotary potentiometer 117 via a rod 116, and the direct-acting potentiometer 119 is fixed to the rotary shaft 118 of this rotary potentiometer 117. The main body is fixed, and the tip of the direct-acting shaft 121 of the direct-acting potentiometer 119 is connected to the tip of the measuring rod 109 by the universal joint 111. 122 is a rubber elastic cover.

In addition, each of the potentiometers 114, 117,
A servo motor drive mechanism 131 that is driven using an electric signal outputted from the servo motor 119 as a command signal is provided on a substrate 132 in the reduced space. A plurality of the servo motor drive mechanisms 131 are provided corresponding to the number of measurement points on the vehicle body 1, and each mechanism 131 fixes the main body of the rotary motor 133 on the substrate 132 in the reduced space. Vertical rotation axis 134
The main body of another rotary motor 135 is fixed to the upper end in the orthogonal direction, and the main body of a linear actuator 137 is fixed to the horizontal rotation shaft 136 of this rotary motor 135 in the orthogonal direction. The direct-acting shaft 138 of the actuator 137 is used as a measurement indicator, and the amount of operation of the motors 133, 135 and the actuator 137 is detected by potentiometers 141, 142, 143 installed nearby. Meter 141, 142, 14
3 is electrically compared with the command signals of the potentiometers 114, 117, 119 of the three-dimensional coordinate detector 112, and the servo motor drive mechanism 1
31, thereby controlling the three-dimensional coordinate position of the tip of the measuring rod 109 of the reducing machine 101 to the linear axis 138 as the measuring pointer of each servo motor drive mechanism 131 on the substrate 132.
Direct by the tip of.

In this way, using the reducing machine 101, a plurality of measurement points on the vehicle body 1 are measured on the substrate 132 in the reduced space.
The above-mentioned linear motion shaft 138 serves as a measurement indicator on the top, and each linear motion shaft 138 serves as a measurement indicator.
The base 42 of each standard indicator 41 is provided on the substrate 132 of the standard indicator 41 in the same way as in the previous embodiment, and the base 42 is movably adjusted to fix this base 42 in an optimal state. Each of the servo motor drive mechanisms 131 is manually moved with respect to each indicated point P so that the tip of the linear shaft 138 serving as a measurement indicator accurately matches the indicated point P, and each of the servo motor drive mechanisms 131 is After locking the node, this time, using the electrical signals output from the potentiometers 141, 142, 143 of this servo motor drive mechanism 131 as a reference, this reference signal and the reduction machine 101 at the positions a, b, c, and d are compared. Each measurement point on the vehicle body 1 to which the detection end 110 of the measurement detection rod 107 of the reduction machine 101 is attached is corrected so that the output signals of the potentiometers 114, 117, and 119 match.

Note that four of the reduction machines 6, 101 may be used at the same time, or one of them may be sequentially moved to a corresponding position.

Next, the third embodiment of the present invention is shown in FIGS. 12 and 1.
This will be explained based on Figure 3.

A fixed base 152 of the reducer 151 is installed in a fixed direction at a fixed position e on the floor on one side of the vehicle body 1, and a ring-shaped rotating base 154 is attached to the upper part of the shaft 153 of the fixed base 152. A receiving part 155 is fixed to the upper end of the shaft 153, and the upper surface of the rotating base 154 is locked by this receiving part 155. 156 is provided so that it can be attached and detached by the magnetic force of the receiving part 155, and a grip part 157 and a support part 158 are integrally provided from the side surface of the rotating base part 154. The outer rod 161 is rotatably supported in any direction by the universal bearing 159, the inner rod 162 is slidably fitted inside the outer rod 161, and the link 163 is also fitted in the same manner as in the previous embodiment. , measurement detection rod 164
and a detection end 165, and the link 1
66, a measurement take-out rod 167 and a take-out end 168 are provided. 169 is the rotation base 15
This is the screw that fixes 4.

Then, as in the first embodiment, each measurement point on one side of the front part of the vehicle body 1 is measured using the measurement pointer 23 of the take-out end 168 of the reduction machine 151 at the fixed position e on the substrate 156 in the reduction space. Holder 26 by pointing upwards
Once fixed, the measurement detection rod 1 of this reduction machine 151
64 toward the rear of vehicle body 1,
Similarly, each measurement point on one side of the rear of the
3, and fix it on the substrate 156. Furthermore, the fixed base 152 of the reduction machine 151 is attached to the vehicle body 1.
Install it at a fixed position on the floor surface on the other side in the same direction as in the fixed position e, rotate the rotating base 154 by 180 degrees and fix it, and attach the measuring detection rod 164 to the vehicle body. 1, each measurement point on the other front side and the other rear side of the vehicle body 1 is indicated and fixed on the substrate 156 with the measurement pointer 123, as in the case of the one side.

Note that the fixed position e is located symmetrically with respect to the center line g, and the center and direction of the substrate 156 are made to match the center and direction of the fixed position e.

In this way, a plurality of measurement points on the vehicle body 1 are measured by the measurement pointer 123 on one substrate 156.
After giving the above instructions, the rest is the same as in the previous example.
The base 42 of the standard indicator needle 41 is provided on the substrate 156, the base 42 is movably adjusted and fixed, and the position indicated by each standard indicator needle 41 after this movable adjustment is determined via the reducer 151. It is made to compare with each measurement point of the vehicle body 1. In this case, the displacement detector 61 or the like is used.

In each of the above embodiments, when moving the measurement point of the vehicle body 1 from the actual space to the reduced space, the measurement point is spatially reversed due to the structure of the reducer 6, 101, 151; There is no problem as it will be reversed again during the process of restoring it.

Further, the reduction machine 6, 101, 151 is connected to the rods 14, 1 by the inner rods 12, 105, 162.
7. The rods 107, 109 or the rods 164, 167 move forward and backward in the same direction, but the rods may move forward and backward in opposite directions. For example, as shown in FIG. At 6, the inner rod is cut out in the middle to form one inner rod 12a and the other inner rod 12b, and the racks 201 and 202 are mutually protruded from the end faces of the inner rods 12a and 12b. This rack 20 is between racks 201 and 202.
1, 202, and this pinion 203 may be rotatably supported on the outer rod 11, or it may be spherically supported on the support plate 8, as in the reduction machine shown in FIG. A pipe 211 is rotatably supported in any direction via a universal bearing 9, and measurement detection rods 215 are attached to both ends of the pipe 211 via support parts 213 and 214.
and a measurement take-out rod 216 is rotatably supported by shafts 217 and 218, and the shaft 21 of the measurement detection rod 215 is
Both sides 221 and 222 are equidistant from 7 and both sides 22 are equidistant from the axis 218 of the measuring rod 216.
3 and 224 with wires 225 and 226, respectively, or the pipe 231 may be rotated in any direction via a universal bearing 9 supported by a spherical surface on the support plate 8, as in the reduction machine shown in FIG. Shafts 234 and 235 are movably supported at both ends of this pipe 231 via support parts 232 and 233.
is rotatably supported, and pulleys 236, 237 are fixed to the shafts 234, 235, and a measurement detection rod 238 and a measurement extraction rod 239 are respectively fixed to the shafts 234, 235, and the pulleys 236, 237 at both ends are fixed to the shafts 234, 235. An endless wire 241 is wound around the endless wire 241, and a part 242 of this endless wire 241,
243 may be fixed to the pulleys 236, 237.

Furthermore, the reduction machines 6, 101, and 151 can also be used as holders when modifying the body. For example, if a chuck is provided at the detection end 15, 110, 165 of the measurement detection rod 14, 107, 164, and the chuck holds, for example, a sheet metal, etc., and locks each movable part of the reduction machine 6, 101, 151, The sheet metal can be supported in a fixed position during welding or the like.

As described above, according to the present invention, a plurality of measurement points on an actual vehicle body are indicated by measurement pointers on a board in a reduced space using a reducing machine, and each measurement point is placed on the board of each measurement pointer. The bases of a plurality of standard indicator needles that indicate accurate positions corresponding to the reduced measurement points are movably adjusted and the bases are fixed, and the positions indicated by the standard indicator needles after the movable adjustment and the above-mentioned reduction machine are Since the degree of modification of the vehicle body is measured by comparing each of the reduced measurement points of the vehicle body determined by This eliminates the burden of adjusting the measurement frame and laser moving base for large heavy objects to match the actual vehicle body, unlike in the past.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a first embodiment of the vehicle body correction measurement method of the present invention, FIG. 2 is a partially cutaway perspective view of the reduction machine, and FIG. 3 is a perspective view of the holder.
Fig. 4 is a partially cutaway perspective view showing a comparison between the measurement indicator and the standard indicator, and Fig. 5 is a perspective view showing a comparison between the position indicated by the standard indicator and the measurement point on the vehicle body. FIG. 6a is a side view of the measuring pointer, FIG. 6b is a side view of the displacement detector, and FIGS. 7 and 8 show other embodiments of the measuring pointer. FIG. 9 is a perspective view showing the second implementation row of the present invention; FIG. 10 is a partially cutaway perspective view of the reduction machine; FIG. 11a is a perspective view of the three-dimensional coordinate detector. Figure 11b is a perspective view of the servo motor drive mechanism corresponding to the measurement indicator needle,
Fig. 12 is a perspective view showing a third embodiment of the present invention, Fig. 13 is a reduced perspective view thereof, Fig. 14 is a sectional view showing a fourth embodiment of the reducing machine, and Fig. 15 is a fifth embodiment of the reducing machine.
FIG. 16 is a front view showing a sixth embodiment of the reduction machine. 1... Vehicle body, 6,101,151... Reducing machine, 19,132,156... Board, 23,8
6,138...Measurement indicator needle, 41...Standard indicator needle, 42...Base.

Claims (1)

[Claims] 1 Using a reduction machine, point out multiple measurement points on the vehicle body three-dimensionally on a board in a reduced space with measurement pointers, and point out each of the reduced measurement points to the board of each measurement pointer. The bases of a plurality of standard indicator needles that indicate accurate positions corresponding to the above are movably adjusted and fixed, and the positions indicated by the standard indicator needles after the movable adjustment and the vehicle body determined through the above-mentioned reduction machine are A vehicle body modification measuring method characterized in that the degree of modification of the vehicle body is measured by comparing each of the reduced measurement points.