JP2001071030A - Repair method for metal surface part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely and quickly repair a small dent part made on a metal surface part of e.g. a vehicle body surface of an automobile. SOLUTION: A width line of a suitable length is formed to a surface part of a semitransparent plate 3 arranged with a fluorescent lamp 2 to a rear face part in a lattice shape, by irradiating an objective face with a fluorescent light beam through a semitransparent plate, a lattice width line is reflected, the reflection exhibits an objective dent place in an expanded state so that part of the lattice width line is strained, by pressing the inside of a risually recognized dent place of the objective face with a tip pressing part of a working bar inserted into the inside of the objective face with a grip part, the dent is repaired to a planar shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for repairing a metal surface portion.

[0002]

2. Description of the Related Art For example, various shapes and small dents (referred to as dents) formed on the surface of an automobile body.
Conventionally, in order to repair the light, a light beam from a fluorescent lamp is applied to the surface of the vehicle body, and inserted into the metal plate of the vehicle body while guessing the dent position by looking at the surface of the vehicle body reflecting the light beam of the fluorescent lamp. In some cases, a method of machining while moving the tip of the working tool has been adopted.

[0003] However, in such a method, it is possible to confirm only on the line in the irradiation direction of the fluorescent lamp installed in the vertical or horizontal direction, and it is not possible to visually recognize extremely small uneven portions. The efficiency was not improved, and it took too much time to repair the metal surface part, and the degree of fatigue of the worker increased.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention eliminates the drawbacks of the conventional method for repairing a metal surface, and makes it possible to quickly and surely repair the repair by easily visually recognizing uneven portions. It is an object of the present invention to provide a repair method intended to be performed.

[0005]

According to the present invention, a width line of an appropriate length is formed in a grid pattern on a surface portion of a translucent plate having a fluorescent lamp disposed on a back surface, and the fluorescent lamp light beam is formed on a target surface. By irradiating through a translucent plate, the grid width line is reflected, and by this reflection, a part of the grid width line shows a concave portion of the target surface distorted in an expanded state, and is inserted inside the target surface. This is a method of restoring the pressing end of the rod to a planar shape by pressing the inside of the dent visually recognized portion of the target surface with a gripping portion.

Further, according to the present invention, a width line is formed in a grid pattern in a longitudinal direction and a horizontal direction on a surface portion of a translucent plate having a fluorescent lamp disposed on a back surface, and such a translucent plate material is installed on a mounting plate. The work is performed by attaching this mounting plate to an optional stand.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The size of a concave portion targeted by the repair method of the present invention is a true circle or an ellipse having a diameter of up to about 70 mm, and does not require repainting. In the case of automobiles, there are generally many recesses of 20 to 40 mm.

[0008] An operator first moves and approaches a predetermined surface portion of a target vehicle body with the fixture in which the fluorescent lamp is installed on the back of the translucent plate attached to the stand. Then, by the irradiation of the fluorescent lamp, the grid-like vertical and horizontal width lines formed on the surface of the translucent plate are reflected on the surface of the vehicle body.

At the time of reflecting the irradiation, if a portion that looks distorted as if grid lines or grid lines are expanded is visually recognized on the surface of the vehicle body, it can be determined that the portion is a concave portion.
(See Fig. 5)

[0010] Next, the operator inserts the fulcrum part and the tip pressing part of the working rod into the inside of the metal plate part on the surface of the vehicle body which is illuminated by the fluorescent lamp, and inserts the inside of the recessed part visually recognized. After moving the tip pressing portion to the center, a force is applied to the grip portion of the working rod at the center of the recessed portion. Then, if the tip pressing portion of the working rod presses the surface concave portion of the vehicle body metal plate from the inside and pushes it out several times with an arbitrary position of the roller portion as a fulcrum, the concave portion is flat. To repair.

For a circular dent having a diameter of 30 mm or less, the pressing portion at the tip of the working rod is pushed up to the center of the dent only several times. This takes into account the temperature, the type of car, the thickness of the metal plate and the degree of old and new.

For a circular recess having a diameter of more than 30 mm to 70 mm, the tip pressing portion of the working rod is pushed up little by little from the periphery of the recess, and the center point is divided into several portions with a small force. And push it out.

In the case of an elliptical dent, the repair method for the size of the dent area is the same as in the case of the true circular dent. However, when the dent is pushed, the center of the dent becomes gradually and clearly visible. So, try to push it up.

Further, when the grid lines are reflected on the surface of the vehicle body by the irradiation of the fluorescent lamp, a portion where the grids or the grid lines appear to be distorted as if contracted is visually recognized on the surface of the vehicle body. Then, it can be determined that it is a convex portion. (See Fig. 6)

At that time, the worker hits the protruding portion of the vehicle body surface portion with the tip of a wooden rod as shown in FIG. 4 and hits it to form a concavity.

Thereafter, similarly to the above, the tip pressing portion of the working rod is inserted into the inside of the surface of the vehicle body, and a force is applied to the gripping portion of the working rod to the inside of the recessed portion to be visually recognized so that the fulcrum is supported at Then, it is extruded by pressing with a tip pressing section to restore it to a flat surface.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS a is a car body plate, b is a gap between windows,
The pressurizing portion 1 of the working rod 10 having a shape described later in this gap portion
3 and the roller part 12 are inserted, and the tip of the pressing part 13 is brought into contact with the inner surface of the metal surface part by operating the grip part 11.

Reference numeral 1 denotes a fixture in which two rod-shaped fluorescent lamps 2 and 2 are provided on the back surface. A translucent plate 3 can be attached to and detached from the surface of the fixture.

The shape and number of the fluorescent lamps are not particularly limited.

On the surface of the translucent plate 3, there is provided a grid member 4 having a grid-shaped width line having an appropriate width in both the vertical and horizontal directions. The color of the grid width line is, for example, dark blue, and the width length is 5 to 6 mm. The grid member 4 is formed on the surface of the translucent plate 3 by any means such as printing, transfer, and tape.

Reference numeral 5 denotes a support rod for the mounting fixture 1. The support rod is fixed to an arbitrary angle position of an angle adjusting member 9 provided on a support column 8 fitted and inserted into a support pipe 7 of a stand 6 so as to be able to expand and contract. It becomes. This angle can be adjusted by 180 °.

Reference numeral 10 denotes a crank-shaped working rod composed of a gripping portion 11, a roller portion 12, and a tip pressing portion 13. A thin tape is applied to the tip pressing portion 13, and a thick tape is applied to the grip portion 11. . There are various types of the working rod, and an operator may manufacture it as needed.

Reference numeral 14 denotes a wooden working rod, which is a tool used to make the convex portion concave when the surface of the target metal plate becomes convex.

The repair method of the present invention and the tool used therefor are used not only for repairing small uneven portions generated on an automobile body but also for repairing similar small uneven portions generated on the surface of a metal sheet metal processed object. It can be used for.

[0025]

By carrying out the method of the present invention, a worker can quickly and surely find small dents and projections formed on the surface of a metal plate, and quickly and reliably repair the small dents and protrusions. Work efficiency can be extremely high.

This makes it possible to deal directly with small dents formed in a new car, and to completely remove dents and protrusions on the body surface of an old car as a used article or immediately before putting it out for auction. Since it can be removed and put on sale, it can be sold at a high price.

[Brief description of the drawings]

FIG. 1 is a state diagram at the time of work in an automobile.

FIG. 2 is a perspective view of the entire instrument used.

FIG. 3 is a front view of a working rod.

FIG. 4 is a front view of another working rod.

FIG. 5 is a state diagram of a grid member reflected on the surface of a metal plate;

FIG. 6 is another state diagram of the grid member reflected on the surface of the metal plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Attachment 2 Fluorescent lamp 3 Translucent plate 4 Grid member 5 Support rod 6 Stand 10 Working rod 14 Working rod

Claims (4)

[Claims] 1. A width line having an appropriate length is formed in a grid pattern on a surface portion of a translucent plate on which a fluorescent lamp is arranged on a back surface, and the target surface is irradiated with the fluorescent light beam through the translucent plate. The grid width line is reflected, and by this reflection, a part of the grid width line shows the concave portion of the target surface distorted in an expanded state, and grips the tip pressing portion of the working rod inserted inside the target surface. A method for repairing a metal surface portion, wherein the metal surface portion is repaired into a planar shape by pressing the inside of a dent visually recognized portion of a target surface with the portion. 2. A translucent plate having a fluorescent lamp disposed on a back surface thereof, a width line of an appropriate length is formed in a grid pattern on a surface portion of the translucent plate, and the target surface is irradiated with the fluorescent light beam through the translucent plate. The grid width line is reflected, and by this reflection, a part of the grid width line shows the concave portion of the target surface distorted in an expanded state, and grips the tip pressing portion of the working rod inserted inside the target surface. A method for restoring a vehicle body surface, comprising: restoring a flat surface by pressurizing an inside of a dent visually recognized portion of a target surface with a portion. 3. A translucent plate having a fluorescent lamp disposed on a back surface thereof, a width line is formed in a grid pattern in a longitudinal direction and a horizontal direction on a surface portion of the translucent plate, and such a translucent plate material is installed on a mounting plate. 2. The method for repairing a metal surface part according to claim 1, wherein the work is performed by attaching to a stand. 4. A translucent plate in which a fluorescent lamp is arranged on the back side has a width line formed in a grid pattern in the vertical and horizontal directions on a surface portion thereof, and such a translucent plate material is installed on a mounting plate. 3. The method for repairing a vehicle body surface according to claim 2, wherein the work is performed by attaching the vehicle to an optional stand.