JPH10220438A - Reference level block device for body assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reference level book device of simplified structure for assembling a body. capable accurately keeping a reference mass block used to assemble a vehicular body structure, at the position of a reference wall of a reference groove formed on a level block, and positioning the mass block, regardless of a dispersion in the breadth of the reference groove. SOLUTION: An upper reference block 1 and a lower reference block 2 combined with each other in such a state as having wedge surfaces 4 and 5 kept in contact are housed within the reference groove 8 of a level block 18. Both reference blocks 1 and 2 move along the wedge surfaces 4 and 5 via the rotation of a tightening bolt 3. In addition, the flat surface 12 of the upper reference block 1 is kept in contact with the reference wall 9 of the reference groove 8 under pressure, and forms an stationary reference surface. A reference mass block 17 is kept in contact with the flat surface 12, thereby being positioned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body assembly for positioning and fixing a reference mass block such as an assembling jig used for assembling a vehicle structure to a reference wall surface of a reference groove formed on a surface plate. The present invention relates to a standard surface plate device.

[0002]

2. Description of the Related Art When assembling a structure constituting a vehicle, it is necessary to position and fix an assembling jig at a predetermined position. Although there are various types of positioning means, a means for setting a reference groove on a surface plate on which the jig is set, and positioning and setting a reference mass block of the jig on a reference wall surface of the reference groove is known. Relatively many are adopted.

FIG. 4 shows an example of the prior art. That is, the reference groove 8 is recessed in the surface plate 18, and the reference wall surface 9 is formed in the reference groove 8. Reference block piece 2
1 is provided with a projecting reference portion 20 inserted into the reference groove 8, and the reference surface 19 of the projecting reference portion 20 is
Is set in contact with the reference wall 9. To restrict the movement of the reference block piece 21, the reference block piece 21 is fixed by the magnet table 22. As described above, by bringing the reference mass block 17 into contact with the reference surface 19 of the set reference block piece 21 as shown in the figure, the reference mass block 17 is positioned and fixed at a correct reference position.

[0006] As shown in FIG. 6, a block gauge 22 is set in the reference groove 8 of the surface plate 18 so as to fit therein, and the reference of the block gauge 22 in contact with the reference wall surface 9 of the reference groove 8 is set. Means for positioning the reference mass block 17 in contact with the surface 23 is also employed.

Although not for positioning the reference mass block 17, a known technique related to the present invention described later is Japanese Utility Model Publication No. 46-12114. As shown in FIGS. 7 and 8, this "tangential key" is composed of a push key (2) and a pull-out key (1) with their slopes in contact with each other, and an elastic key fixed to the push key (2). Board (5)
The bolt (3) held by the screw is screwed into the pull-out key (1), and the bolt (3) is tightened to cause relative movement on the inclined surface, so that the push-in key (2) and the pull-out key (1)
Is pressed against the key groove.

[0006]

The positioning means of the reference mass block 17 shown in FIG. 4 can perform high-precision positioning if the reference block piece 21 is held in an immobile state.
However, the reference mass block 17 strongly hits the reference block piece 21 at the time of positioning. Therefore, when the magnetic force of the magnet table 22 is lower than the abutting force of the reference mass block 17, as shown in FIG.
Recedes, the reference surface 19 of the reference block piece 21 and the reference groove 8
A gap δ is generated between the reference wall 9 and the reference wall 9. Therefore, there is a problem that the position of the reference mass block 17 is shifted by δ.

On the other hand, in the case of the positioning means using the block gauge 22 shown in FIG. 6, a block gauge 22 which can be fitted into the reference groove 8 is required, and there is a tolerance in the groove width processing of the reference groove 8. However, there is a problem that it takes time to select the block gauge 22 and the setup time becomes long. Further, since the width dimension of the reference groove 8 also gradually changes due to wear or the like, it is necessary to change the block gauge 22 each time, which is extremely complicated.

The technique disclosed in Japanese Utility Model Publication No. 46-12114 has a configuration similar to that of the present invention in a means for adjusting a key width dimension using a slope surface (corresponding to a wedge surface). The direction is completely different from the present invention,
Even when the combined width of the push-in key (2) and the pull-out key (1) is slightly smaller than the width of the keyway, the bolt (3) needs to be rotated several to several tens of times, resulting in poor workability. The purpose of this technique is completely different from that of the present invention, and this technique is not applied to a place where a reference plane is formed. In addition, the strength of the key is insufficient, and the overall structure is more complicated and more costly than the present invention.

The present invention solves the above-mentioned problems, and the reference surface is easily formed at the correct position even if the tolerance of the reference groove varies, and the adjustment work is performed because of the slide type adjuster function. It is an object of the present invention to provide a reference platen device for assembling a vehicle body which is extremely easy, has a simple overall structure, and can be implemented at low cost.

[0010]

According to the present invention, in order to achieve the above object, a reference mass block for assembling a vehicle structure is aligned with a reference wall surface of a reference groove provided in a surface plate. A reference platen device for setting, which is stored in the reference groove with a width slightly smaller than the reference groove, and at least a flat surface that can be in close contact with the reference wall surface and a flat surface parallel to the bottom surface of the reference groove and An upper reference block and a lower reference block forming a wedge surface, and a fastening screwed into a screw hole threaded in the lower reference block along a vertical direction parallel to the reference wall surface and held on the upper reference block side And the upper reference block and the lower reference block are brought together by bringing the wedge surfaces into contact with each other,
The upper reference block constitutes a reference platen device for assembling a vehicle body in which a through hole through which the fastening bolt can be loosely inserted is formed. More specifically, the upper reference block and the lower reference block are formed by dividing a rectangular block body that is housed in the reference groove within a tolerance range and forms the flat surface into two parts by the wedge surface. Is what you do.

An upper reference block and a lower reference block, which are formed narrower than the reference groove and are combined by bringing the wedge surfaces into contact, are inserted into the reference groove of the surface plate. Next, the fastening bolt held on the upper reference block side is screwed into the screw hole of the lower reference block, and the fastening bolt is rotated several times to be tightened, so that the relative movement between the wedge surfaces is equal to the upper reference block. The upper reference block occurs between the block and the lower reference block, and is positioned by being pressed against the reference wall surface of the reference groove. Of course, in this case, the lower reference block is also pressed against the wall surface opposite to the reference wall surface. As described above, the upper reference block is set at the predetermined reference position, and the positioning can be fixed by bringing the reference mass block into contact with the upper reference block.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a reference platen device for assembling a vehicle body according to the present invention. FIG. 1 shows components of a reference platen device for assembling a vehicle body of this embodiment. In other words, the reference surface plate apparatus for assembling the vehicle body according to the present embodiment includes the upper reference block 1, the lower reference block 2, and the single fastening bolt 3 connecting the reference blocks 1 and 2. In this example, the upper reference block 1 and the lower reference block 2 are formed of slender blocks having substantially the same external shape.
Wedge surfaces 4 and 5 are formed on opposing surfaces. The upper reference block 1 and the lower reference block 2 form a rectangular block in a state where the wedge surfaces 4 and 5 are in contact with each other. Conversely, the upper reference block 1 and the lower reference block 2 are formed by diagonally dividing the rectangular block into two at the positions where the wedge surfaces 4 and 5 are formed. Further, on the side of the upper reference block 1 and the lower reference block 2 opposite to the reference wall surface 9 of the reference groove 8 and on the opposite surface, the reference wall surface 9 and the wall surface 10 of the reference groove 8 opposite to the reference wall surface 9 are in close contact, respectively. Possible flat surfaces 12, 13 are formed. Further, flat surfaces 14 and 15 parallel to the bottom surface 11 are formed on the side of the reference groove 8 facing the bottom surface 11 and on the opposite surface.

As shown in FIGS. 1 and 3, a through hole 6 into which the fastening bolt 3 is loosely inserted is formed in the upper reference block 1, and a screw hole into which the fastening bolt 3 is screwed is formed in the lower reference block 2. 7 is threaded. As shown in FIG. 3A, the through hole 6 and the screw hole 7 are arranged at concentric positions in a state where the upper reference block 1 and the lower reference block 2 are combined. The inner diameter of the through hole 6 is larger than the outer diameter of the fastening bolt 3, and the size is the amount of movement until the upper reference block 1 and the lower reference block 2 come into contact with the reference wall surface 9 or the wall surface 10 of the reference groove 8. The outer diameter of the fastening bolt 3 screwed into the screw hole 7 and the inner diameter of the through-hole 6 need to have dimensions that do not interfere until the positioning is completed.

Next, the positioning operation of the vehicle body assembling reference surface plate apparatus of the present invention will be described. First, as shown in FIG. 3A, the upper reference block 1 and the lower reference block 2 are combined with the wedge surfaces 4 and 5 being in close contact with each other. The block 2 is formed as an integral rectangular block. Since this rectangular block body is narrower than the groove width of the reference groove 8, it is housed in the reference groove 8 via a gap as shown in FIG. In this case, the flat surface 14 on the lower surface of the lower reference block 2 is
The flat surface 15 on the upper surface of the upper reference block 1 is held in parallel with the flat surface 14. In this state, the fastening bolt 3 and the through hole 6 of the upper reference block 1 are in this state.
And a uniform gap 16 is formed.

Next, when the fastening bolt 3 is screwed in, a moving force is generated along the wedge surfaces 4 and 5 to move the upper reference block 1 and the lower reference block 2 in opposite directions. The flat surface 12 is pressed against the reference wall surface 9 of the reference groove 8, and the flat surface 13 of the lower reference block 2 is pressed against the wall surface 10 of the reference groove 8. In this case, since the fastening bolt 3 moves together with the lower reference block 2, the outer diameter of the fastening bolt 3 and the through hole 7 of the upper reference block 1 are not concentric. However, since the inner diameter of the through hole 6 is formed larger than the outer diameter of the fastening bolt 3, the through hole 6 does not interfere with the fastening bolt 3.

As described above, the flat surface 12 of the upper reference block 1 forms a reference surface that matches the reference wall surface 9 of the reference groove 8 as shown in FIG. Further, since a strong holding force is generated between the wedge surfaces 4 and 5 by the fastening of the fastening bolts 3, the upper reference block 1 and the lower reference block 2 are in the state shown in FIGS. 2 and 3 (b). It is held in the reference groove 8. Therefore, as shown in FIG. 2, correct positioning can be performed by pressing the reference mass block 17 against the flat surface 12 of the upper reference block 1. Further, in the case of the structure of the present invention, a common reference platen for assembling a vehicle body can be used as it is even if the width of the reference groove 8 varies. Also,
Even if the reference wall surface 9 of the reference groove 8 is worn, the upper reference block 1 is positioned close to the worn reference wall surface 9, so that the set position is corrected by the amount of wear, thereby enabling stable positioning. .

[0017]

【The invention's effect】

1) According to the reference platen device for assembling a vehicle body according to the first aspect of the present invention, the upper reference block and the lower reference block, which are joined by bringing the wedge surfaces into contact with each other, are inserted into the reference grooves of the platen and fastened. Since a structure is employed in which both reference blocks are pushed open by the bolts to form a reference surface at the position of the reference wall surface of the reference groove, a correct reference surface can be formed regardless of variations in the width of the reference groove. Thereby, the positioning accuracy of the reference mass block is improved, and the setup time can be shortened. 2) According to the reference platen device for assembling the vehicle body according to the second aspect of the present invention, the upper reference block and the lower reference block are each formed by dividing the rectangular block into two parts by wedge surfaces and connecting the two reference blocks with the fastening bolts. It can be implemented relatively easily and inexpensively.

[Brief description of the drawings]

FIG. 1 is a perspective view showing components of a reference platen device for assembling a vehicle body according to the present invention.

FIG. 2 is a partial side view showing a positioning state of a reference mass block by the reference platen device for assembling a vehicle body of the present invention.

FIG. 3 is a cross-sectional view for explaining the operation of the reference surface plate device for assembling a vehicle body according to the present invention.

FIG. 4 is a side view showing a conventional reference mass block positioning means.

FIG. 5 is a partially enlarged side view for explaining a problem of the positioning means of FIG. 4;

FIG. 6 is a side view showing a conventional means for positioning a reference mass block using a block gauge.

FIG. 7 is a sectional view showing a schematic structure of a known technique related to the present invention.

FIG. 8 is a partial sectional view showing a detailed structure of the key shown in FIG. 7;

[Explanation of symbols]

 Reference Signs List 1 upper reference block 2 lower reference block 3 fastening bolt 4 wedge surface 5 wedge surface 6 through hole 7 screw hole 8 reference groove 9 reference wall surface 10 wall surface 11 bottom surface 12 flat surface 13 flat surface 14 flat surface 15 flat surface 16 gap 17 reference Mass block 18 surface plate

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Keita Igawa No. 8 Tsuchiya, Fujisawa City, Kanagawa Prefecture Isuzu Motors Fujisawa Plant

Claims (2)

[Claims] 1. A reference platen device for positioning and setting a reference mass block for assembling a vehicle structure on a reference wall surface of a reference groove provided on a platen, wherein the reference mass block is slightly more than the reference groove. An upper reference block and a lower reference block which are housed in the reference groove with a narrow width and form a flat surface and a wedge surface parallel to at least the reference wall and a bottom surface of the reference groove, and the reference wall And a fastening bolt screwed into a screw hole threaded in the lower reference block along a vertical direction parallel to the upper reference block. The upper reference block and the lower reference block are A reference surface plate device for assembling a vehicle body, characterized in that the wedge surfaces are brought into contact with each other and are combined, and a through hole through which the fastening bolt can be loosely inserted is formed in the upper reference block. 2. The upper reference block and the lower reference block are formed by dividing a rectangular block body housed in the reference groove within a tolerance range and forming the flat surface into two parts by the wedge surface. Item 2. A reference surface plate apparatus for assembling a vehicle body according to item 1.