JP2016080670A - Laser beam type vehicle body reference position and component position measurement apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laser beam type vehicle component position measurement apparatus capable of measuring a hole position of a vehicle frame easily and accurately.SOLUTION: There are provided a base 1 having an upper cavity and a lower cavity which have an orthogonal relation therebetween in planar view, a pair of frame fixture holding arms positioned in the upper cavity and movable in parallel with each other in opposite directions while being synchronized, a frame fixture holding body at one end of the arm, a frame fixture 20 held by the frame fixture holding body, an expandable/contractable center arm 30 positioned in the lower cavity, a measurement arm insertion hole orthogonal to the center arm longitudinal direction in the vicinity of the end of the center arm, a pair of measurement arms fixable so as to be inserted into the arm insertion hole, and a cross light irradiation type laser module, while having a scale displayed on the side face of the measurement arm, installed in the vicinity of the end of the measurement arm and the end of the center arm, so that a mutual positional relation between respective vehicle frame holes can be measured.SELECTED DRAWING: Figure 18

Description

  The present invention relates to an apparatus for measuring a vehicle body reference position and a part position of an automobile by laser beam irradiation.

  Many of the conventional devices for measuring the hole position due to the distortion of the automobile frame have many complicated and large-scale devices with a large number of parts. As shown in the present invention, the devices that can be easily attached to the lower part of the frame and can measure a wide range are currently available. I can't find it.

The body of an automobile is fixed on the frame and its consistency is maintained, but the frame may be distorted due to an accident or other reasons and the correction may be necessary. For this correction, it is necessary to first measure the degree of distortion of the frame, and various measuring devices are used. Of these, floor-type measuring devices having a high degree of spread tend to be inaccurate in measurement dimensions due to distortion of a fixed portion to an automobile and the like, and labor for mounting the device is large. The jig type measuring device requires much more labor for installation. The front side is overwhelmingly the most damaged part of an automobile due to an accident, etc., and it is important to measure the frame on the front side and the surrounding area of the frame. However, as described above, conventional measurement means are easy to install and accurate. At present, there is not enough in terms of cost and cost. In general, as a vehicle body correction work, there are many cases in which a two-dimensional measurement is performed with a tracking gauge or the like, and this work method is particularly effective for mild distortion. However, as the distortion becomes more complicated, it becomes complicated and impossible with only a gauge, and it tends to require a long work. A full-fledged measuring instrument is effective depending on the degree of correction, but it is not common in terms of the burden of attaching and detaching and high cost. Car body modifications are overwhelmingly centered on the front under part, and there is a need for easy-to-removable and low-cost measuring instruments that specialize in front and rear under parts.
The present invention was invented in order to solve the above-described problems related to the conventional vehicle frame distortion measuring means, and can be easily attached to the lower part of the frame and can be accurately and easily measured. It was developed for the purpose of providing a new and useful means.

The present invention has the following configuration as means for solving the problems.
That is, a base body having an upper gap and a lower gap that are orthogonal to each other in a plan view is provided, and a pair of frame fixture holding arms that are located in the upper gap and that can be moved in parallel in opposite directions while being synchronized are provided, A frame fixing tool holding body is provided at one end of the arm, and a frame fixing tool held by the frame fixing tool holding body is provided, and a center arm that is positioned in the lower gap and can be expanded and contracted is provided. A measurement arm insertion hole perpendicular to the longitudinal direction of the center arm is provided near the end, a pair of measurement arms that can be inserted and fixed in the arm insertion hole is provided, and a scale is displayed on the side surface of the measurement arm. By placing a cross light irradiation type laser module in the vicinity of the center arm end, To enable the measurement.
The present invention is a laser beam irradiation type automobile frame hole position measuring apparatus having the above configuration.

1. Since this device is attached directly to the reference position at the lower part of the automobile frame using a frame fixing tool, the installation is simple and the labor is small.
2. High measurement accuracy can be obtained without contact because of measurement by laser beam irradiation.
3. The system configuration is simple and it can be manufactured at low cost, and each part can be disassembled and stored compactly, and its transportation is easy.
4). Since it is mounted directly at the reference position at the bottom of the car frame, there is no error in pulling work to correct body distortion.
5. A center arm is attached and the center reference of the vehicle body can be confirmed with a laser beam, so it is very effective and the application range is wide because the arm is fixed.
6). Four-point measurement of parts, parts positions, etc. that have no dimension display in the data can be done quickly.
7). Can be installed without removing any parts of the car body.
8). The height can be compared by the parallelism of the base and the measuring arm.
9. Measurement is possible even if the car is tilted.
10. It can be used as a tram gauge with only the center arm.
11 Since the laser beam can be measured in all areas including tire inclination, a wide range of measurement is possible.

  The top view of the base | substrate and frame fixing tool holding arm of this invention   Front view of base and frame fixture holding arm of the present invention   Enlarged plan view of the frame fixture of the present invention   Enlarged front view of the frame fixture of the present invention   Scale explanatory drawing of the scale used for the frame fixture etc. of the present invention   Plan view of the center arm of the present invention   Front view of the center arm of the present invention (when the measurement arm is held is indicated by a virtual line)   Enlarged end view of the center arm of the present invention   Plan view of the measurement arm of the present invention (for left)   Front view of the measurement arm of the present invention (for left)   Plan view of the measuring arm of the present invention (for right)   Enlarged plan view of the bolt lock body used in the present invention   Enlarged front view of the bolt lock body used in the present invention   Enlarged plan view of the measuring needle holder used in the present invention   Enlarged front view of the measuring needle holder used in the present invention   Measuring needle holding explanatory diagram used in the present invention   Illustration of use of the present invention (plan view)   Illustration of use of the present invention (side view)   Illustration of use of the present invention (when the substrate is not used)   Laser line position explanatory diagram of the present invention

Hereinafter, embodiments of the present invention will be described.
In the figure, reference numeral 1 denotes a base, which is formed by vertically fixing a U-shaped plate body vertically, and has a square arm insertion hole 2 as an upper gap and a center arm insertion hole 3 as a lower gap.
4 is a cushion body made of a plate-like foamed synthetic resin, and is fixed to the bottom of the substrate. Reference numeral 5 denotes a center arm fixing knob, which is a male screw having a head with a linear recess engraved on the outer periphery, and is screwed into a female screw drilled in the base. It is a mechanism that allows selection between fixed and unfixed. (Hereinafter, this means is abbreviated as screwing) In the vicinity of both ends of the arm insertion hole, pinion holding shafts 6 are provided so as to penetrate vertically, and a pinion 7 (imaginary line simplified illustration) is provided in this arm insertion hole. It is located so that it can rotate.

Reference numeral 10 denotes a frame fixture holding arm. This arm has a rack 11 attached to the side surface of a rectangular hollow body having a predetermined length. The rack engages with the pinion, and the arm is positioned in the arm insertion hole as shown in the figure. A frame fixture holder 12 is attached to one end of the arm, and a stopper 13 is attached to the other end. The frame fixture holding body is a substantially rectangular parallelepiped block body having a V-shaped cut portion in plan view, and a screwing method is adopted.
As shown in the figure, a pair of the frame fixing tool holding arms described above is provided symmetrically with respect to the base.

Reference numeral 20 denotes a frame fixture. 21 is a drooping bar, and a scale 22 is displayed on the side surface thereof.
Reference numeral 23 denotes a circular rotating part, 24 denotes a non-moving part, 25 denotes a moving claw, which has a step 26 and is divided into three parts in plan view. Each moving claw moves in the large diameter direction or the small diameter direction in synchronization with the rotation of the rotating portion. Moreover, since this moving claw has a level | step difference, this level | step-difference part can be hooked and fixed to the hole of a motor vehicle frame. The drooping bar can be inserted into the gap of the frame fixture holder and fixed by screwing. The moving method of the frame fixture claw in and out is the same as the commercially available lathe chuck method.

Reference numeral 30 denotes a center arm. In this center arm, a rectangular hollow body is provided so as to be extendable and retractable in a nested manner, and a measurement arm holding body 32 is provided at the end of a main body 31 that can fix and release the extension and contraction by screwing. The measurement arm holding body is a block body having a measurement arm insertion hole 33 as shown in the figure, and screwing is used for the insertion hole in the vertical direction and the direction perpendicular thereto. The measuring arm holder is provided with a cross light type laser module 34 so that laser light can be irradiated upward, and a level 35 for level confirmation is located. This laser module functions as a power source for a dedicated battery provided in the measurement arm holder, and a module switch 36 and a scale display window 37 are provided on the side of the holder. This scale display window has the same movable scale end as that used for a commercially available convex in place in the main body, and displays the moving distance on the scale display window by the expansion and contraction of the main body. is there.
A reference scale 38 is displayed on the upper surface of the center arm main body, and the initial setting position of the center arm with respect to the base can be set at a selected position of the reference scale, and this set value is added or subtracted from the numerical value of the scale display window. The measurement range can be widened.

  Reference numeral 40 denotes a measurement arm. This measuring arm is provided with a casing at one end of a hollow rectangular body having a predetermined length, a cross light type laser module 41 and a battery are built in the casing, and a module switch 42 is provided at the other end of the rectangular body. . A scale 43 is displayed on the upper surface of the hollow horn. A pair of these measurement arms are provided symmetrically, but the distance from the center position of one measurement arm in the longitudinal direction of the hollow square body to the laser module increases by the width of the hollow square body. Provided. This measurement arm is inserted into the measurement arm holder gap and screwed together, but since it is positioned so as to overlap vertically in plan view, this dimensional difference is provided in order to obtain the alignment of the irradiation light position by the laser module. ing. The present invention is used in the assembly of the above-mentioned base, frame fixture holder, frame fixture, center arm, and measurement arm, and its use will be described below.

In using the present invention, the frame fixture is first attached to the frame fixture holder.
Insert a hanging rod of the frame fixture into the gap of the frame fixture holder and screw it in place.
In this example, the frame fixture is a lathe chuck type exclusive fixture. The moving claw of the upper projection of this fixture has a step part and is divided into three parts, which can be moved in synchronism with the diameter direction. The moving claw is inserted into the hole of the automobile frame to be measured and turned. The moving claw is moved outward by the rotation of and is pressed and fixed to the inner diameter of the hole. During this operation, the apparatus is placed on an appropriate table. Since the cushion body is located on the lower surface of the base and this cushion body is in contact with the upper surface of the base, there is no fear of damaging the base.

A scale is attached to the hanging rod of the frame fixing tool so that the vertical position of the hole can be known. Further, since the frame fixture holding arm moves synchronously in the opposite directions to the left and right in the rack via the pinion in the base, the frame fixture holding body left and right positions with respect to the base are always the same. As shown in FIG. 1, the frame fixture holders are located facing each other and located on the same line in plan view.
Next, the center arm is inserted into the lower space of the base and fixed by screwing.
As shown in the figure, the center arm and the frame fixture holder are orthogonal to each other in plan view.
The center arm is telescopically extendable and can be screwed together, and is appropriately stretched and fixed. A level is provided at the end of the center arm so that the level of the center arm can be adjusted and confirmed. Note that a triangle mark is displayed at an appropriate position on the upper surface of the measurement arm holding body at the center arm tip, and the position of the measurement arm can be read with this mark.

  Insert the measurement arm into the measurement arm insertion hole with the laser module facing up and screw it in place. At this time, attention is paid to the fixed positions of the measurement arms so that the positions of the laser modules are on the same straight line. When each module switch is turned on, the laser beam crosses from the center arm and the measurement arm and radiates upward in a V shape from the point-like laser module and spreads linearly. The measurement arm and center arm can be slid and extended so that the center of the frame hole to be measured can be measured, and the center arm movement distance and the measurement arm movement distance can be read from the scale to know the hole position. . Note that the front and rear of the laser line from the laser module of the measuring arm holder are the vehicle body center reference, and the left and right lines are for measuring the front and rear distance.

  12 to 13 show a bolt lock body. In the above-described example, the frame fixing tool is fixed to the frame hole with the moving claw, but this bolt lock body is used when the bolt head protrudes downward instead of the hole. This bolt-lock body is provided with an insertion body 52 having a hexagonal hole so as to be able to swing above a hanging rod 51 having a scale 50 by a ball joint method. After inserting the bolt head into this hexagonal hole, insert the pin of a dedicated fixing tool (not shown) having an opposing pin into this through hole and lock the bolt head The bolt lock body is fixed to the above.

  14 to 15 show the measuring needle holder 60. A rectangular hole 62 is provided on a side surface of the rectangular parallelepiped main body 61, and a center arm is inserted and fixed in the rectangular hole. An insertion port 63 and a display hole 64 extending from the upper surface to the lower surface of the main body are provided, and a measuring needle 70 having a scale on the side surface and a sharp upper end is screwed into the insertion hole. As shown in FIG. 18, the measuring needle can be in contact with the lower surface of the frame to measure the vertical position of the frame. As shown in FIGS. 17 and 18, a similar insertion hole 65 is provided in the center arm tip, and the center arm alone can be used as a tram gauge. (Use is shown in FIG. 19)

  Although the present invention has been described above, the present invention is characterized in that it is used by being mounted under an automobile frame, and the mutual positional relationship between the holes in the frame can be measured easily and accurately. A plurality of circular holes are provided on the lower surface of the frame, and the positions of these holes are determined by the vehicle type. Therefore, it is possible to know the distortion of the frame by measuring the hole position. However, as described above, it was difficult to measure this easily and accurately with the conventional means. It became possible. It should be noted that the above-described example is an example of implementation and may have other approximate configurations. As described above, according to the present invention, an apparatus for easily and accurately measuring the vehicle body reference position and the part position can be obtained.

DESCRIPTION OF SYMBOLS 1 Substrate 2 Arm insertion hole 3 Center arm insertion hole 4 Cushion body 5 Center arm fixing knob 6 Pinion holding shaft 7 Pinion 10 Frame fixing tool holding arm 11 Rack 12 Frame fixing tool holding body 13 Stopper 20 Frame fixing tool 21 Drop rod 22 Scale 23 rotating part 24 non-moving part 25 moving claw 26 step 30 center arm 31 main body 32 measuring arm holder 33 measuring arm insertion hole 34 laser module 35 level 36 module switch 37 scale display window 38 reference scale 40 measuring arm 41 laser module 42 module switch 43 scale 50 scale 51 drop rod 52 insert 53 through hole 60 measuring needle holder 61 body 62 square hole 63 insertion hole 64 display hole 65 insertion hole 70 measuring needle 80 automobile frame 90 laser lines

Claims (1)

A base body having an upper gap and a lower gap that are orthogonal to each other in a plan view is provided, and a pair of frame fixture holding arms that are positioned in the upper gap and that can be moved in parallel in opposite directions while being synchronized are provided. A frame fixing tool holding body is provided at one end, a frame fixing tool held by the frame fixing tool holding body is provided, a center arm that is located in the lower gap and can be expanded and contracted is provided, and the vicinity of the end of the center arm Provided with a measurement arm insertion hole perpendicular to the longitudinal direction of the center arm, a pair of measurement arms that can be inserted and fixed in the arm insertion hole, and a scale on the side of the measurement arm. By locating the cross-irradiation type laser module near the edge, the mutual positional relationship between the car frame holes can be measured. Ability and the possible laser beam type automotive vehicle reference position and the component position measuring device according to claim.

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