Jig

Abstract

This assembly jig comprises: a metallic base plate having holes; and a plurality of fit-in metal plates 20 that have fitting protrusions 22 detachably fitted in the holes of the base plate and that are fixed to the base plate. The fit-in metal plates 20 are provided with a plurality of first locking parts 23 that are connected to each other and locked. The plurality of fit-in metal plates 20 intersect each other and are linked by the first locking parts 23, and are detachably locked by linking parts 25 linked thereto.

Description

jig

[0001] The present disclosure relates to a jig including a metal base plate 10 having holes and a plurality of metal plates 20 for fitting.

[0002] The assembly jig disclosed in Patent Document 1 includes, for example, a horizontal base plate made of a metal plate and a metal support member fixed on the base plate. This jig welds the support member to the base plate with an insertion protrusion at the bottom of the support member fitting into an insertion hole in the base plate and abutting the top surface of the base plate. The jig is used for aligning, welding, or assembling workpieces such as components. Generally, workpieces such as components are often subject to design changes or minor modifications, and as a result, the position and shape of the workpiece are often changed or modified.

[0003] Utility Model Registration No. 3240555

[0004] Therefore, the present invention provides a jig that can accommodate changes and corrections to the position and shape of a workpiece to be positioned, such as a component. That is, the object is to provide a jig that can be easily reassembled to fit a position where the shape or dimensional relationship of the workpiece is different.

[0005] A jig according to one aspect of the present disclosure includes a metal base plate 10 having holes, and a plurality of fitting metal plates 20. The fitting metal plates 20 have fitting protrusions 22 that detachably fit into the holes in the base plate 10, and are fixed to the base plate 10. The fitting metal plates 20 are provided with a plurality of first locking portions 23 that engage with each other to secure them in place. The plurality of fitting metal plates 20 are intersectingly connected by the first locking portions 23, and are detachably locked by connecting portions 25 that connect them.

[0006] A jig according to one aspect of the present disclosure can provide a jig that can be reassembled in response to changes or modifications to the position or shape of the workpiece.

[0007] FIG. 1 is a perspective view showing an example of an assembly jig 1 according to an embodiment of the present invention. FIG. 2 is a perspective view showing the process of assembling the fitting metal plates 20 to the base plate 2. (A) A plan view of the base plate 10, and (B) a front view of each fitting metal plate 20. FIG. 3 is a schematic view of the fitting metal plates 20 arranged to intersect, as viewed from above. FIG. 4 is a schematic view of the fitting metal plates 20 arranged to intersect with two metal plates arranged in parallel, as viewed from above, at an angle other than 90 degrees. FIG. 5 is a schematic view showing each slit-shaped first locking portion 24 and how it is regulated. FIG. 6 is a perspective view showing the process of assembling the auxiliary metal plate 40, the second locking portion 43, and the workpiece receiving surface 70. FIG. 7 is a perspective view showing an example of an assembly jig 1 according to another embodiment of the present invention.

[0008] An embodiment of the present disclosure will be described below with reference to the drawings. Note that, unless otherwise specified, descriptions using "to" for numerical ranges include both the lower limit and the upper limit. For example, the description "1 to 5" includes both the lower limit "1" and the upper limit "5." In other words, "1 to 5" has the same meaning as "1 or greater and 5 or less." Jigs are used, for example, as follows: A part is supported on assembly jig 1. Then, other parts are assembled or welded to the supported part.

[0009] <Assembly Jig 1> As shown in FIG. 1 , the jig includes a metal base plate 10 having multiple holes and multiple fitting metal plates 20. The base plate is flat and extends horizontally (in the X and Y directions). The fitting metal plates 20 are also flat and have one or more fitting protrusions 22 that detachably fit into holes in the base plate 10. The fitting protrusions 22 of the fitting metal plate 20 fit into holes in the base plate 10, securing the fitting metal plate 20 to the base plate. The fitting metal plate 20 also has one or more groove-like first locking portions 23 formed by cutting a space in the thickness direction of the metal plate. The first locking portions 23 lock the multiple metal plates together, preventing them from moving. The multiple fitting metal plates 20 interlock with each other at the first locking portions 23, intersecting and connecting them. The multiple fitting metal plates 20 are connected by first locking portions 23 and are detachably locked by connecting portions 25 (see FIG. 6 ). The first locking portions 23 may be slit-shaped (slit-shaped first locking portions 24) or protrusion-type locking portions (protruding locking portions). For example, the slit-shaped first locking portions 24 include downward slit-shaped first locking portions 24d and upward slit-shaped first locking portions 24u.

[0010] As shown in Figures 2 and 3, the base plate 10 is a flat, flat metal plate. Its thickness is preferably 3 mm to 8 mm. The base plate 10 has a number of holes, including rectangular fitting holes (square holes) 12 and screw holes (round holes) 18. The fitting holes (square holes) 12 are holes into which fitting metal plates 20 are fitted, and fitting protrusions 22 formed on the ends of the fitting metal plates 20 fit into the fitting holes 12 of the base plate 10.

[0011] There may be a gap between the fitting hole 12 and the fitting protrusion 22. The fitting metal plate 20 is not welded and can be attached to and detached from the fitting hole 12 of the base plate 10, making reassembly easy.

[0012] <Fitment Metal Plate 20> Figure 3 shows a plan view of the base plate 10 and a front view of the fitting metal plate 20. The fitting metal plate 20 is a flat, flat metal plate. Its thickness is preferably 1.5 mm to 6 mm. The bottom of the fitting metal plate 20 is formed with a contact portion 21 having a horizontal surface that contacts the top surface of the base plate 10, and a fitting protrusion 22 (mounting projection 22) that protrudes below the contact portion 21.

[0013] The fitting metal plate 20 is provided with slit-shaped first locking portions 24 formed by cutting out spaces. The slit-shaped first locking portions 24 include a downward slit-shaped first locking portion 24d that opens downward and an upward slit-shaped first locking portion 24u that opens upward, and at least one of these is provided on the fitting metal plate 20. The downward slit-shaped first locking portion 24d is provided at the bottom of the fitting metal plate 20, and the upward slit-shaped first locking portion 24u is provided at the top of the fitting metal plate 20.

[0014] If necessary, an auxiliary metal plate receiving portion 29 that abuts against an auxiliary metal plate 40 (described later) may be provided at an end of the fitting metal plate 20. Note that when simply referring to a metal plate, it refers to the fitting metal plate 20 and / or the auxiliary metal plate 40.

[0015] 2 , two fitting metal plates 20 are arranged in parallel on the base plate 10 and fitted into the fitting holes 12 of the base plate 10. Furthermore, a plurality of fitting metal plates 20 are assembled by crossing over the two parallel fitting metal plates 20. That is, the fitting protrusions 22 of the two fitting metal plates 20 are inserted into the fitting holes 12 of the base plate 10, and the abutment portions 21 of the fitting metal plates 20 are in contact with the upper surface of the base plate 10. Next, the downward slits (downward slit-shaped first locking portions 24d) of the other fitting metal plate 20 are mutually overlapped with the slits (upward slit-shaped first locking portions 24u) of the fitting metal plate 20.

[0016] As a result, the fitting metal plates 20 intersect at the first locking portions 23 (slit-shaped first locking portions 24) and are detachably connected to each other at the intersecting connecting portions 25. The connecting portions 25 (see FIG. 6) are portions of the metal plates where the multiple metal plates intersect (abut) when connected, and in this embodiment, they have the shape of a prismatic body (particularly a square prism).

[0017] <Upright angle α> The fitting metal plates 20 intersect with each other while fitting into the fitting holes 12 of the base plate 10. As a result, the fitting metal plates 20 are fixed by the slit-shaped first locking portions 24 so as not to move relative to each other, and are erected on the base plate 10. The angle formed between the fitting metal plate 20 and the base plate 10 is the erection angle α or α'. Note that α + α' is 180 degrees. The erection angle α or α' ( FIGS. 3 and 6 ) formed between the slit in the slit-shaped first locking portion 24 and the abutting portion 21 of the fitting metal plate 20 can usually be 60 to 120 degrees, preferably 80 to 100 degrees, and particularly preferably 90 degrees. By making the angle between the slit of the slit-shaped first engaging portion 24 and the abutment portion 21 acute or 90 degrees, the fitting metal plate 20 can be positioned at an incline relative to the base plate 10, or it can be installed vertically.

[0018] <Intersection angle β> The intersection angle β or β', which is the angle formed by the intersection of the metal plates, does not necessarily have to be 90 degrees, as long as the metal plates are fixed and do not move when they are crossed. This allows the metal plates to maintain their upright position on the base plate 10.

[0019] Specifically, for example, when viewed from above, the two metal plates can be arranged so that they intersect at an angle other than 90 degrees at their respective slit-shaped first locking portions 24 (FIGS. 4 and 5). To achieve this positional relationship, it is sufficient to adjust the positions of the fitting holes 12 of the base plate 10 and the fitting protrusions 22 of each fitting metal plate 20. Also, when two metal plates are arranged parallel to each other, an example in which a third metal plate intersects both metal plates at an angle other than 90 degrees (an example in which the intersection angle β or β' is other than 90 degrees) is shown in FIG. 5.

[0020] The intersection of the metal plates also occurs between the fitting metal plates 20 and / or the auxiliary metal plates 40. Therefore, there are possible embodiments in which two fitting metal plates 20 intersect, in which the fitting metal plate 20 intersects with an auxiliary metal plate 40 (described later), and in which the auxiliary metal plates 40 intersect with each other.

[0021] As described above, two or more metal plates intersect at the connecting portion 25 when viewed from above. The intersection angle β or β' of these metal plates is 30 to 150 degrees, preferably 60 to 120 degrees, more preferably 70 to 110 degrees, even more preferably 80 to 100 degrees, and particularly preferably 90 degrees. Note that β+β' is 180 degrees.

[0022] The cross section of the slit portion relative to the metal plate may be formed at a right angle or an acute angle, and in either case, the metal plate can be intersected. When the cross section of the slit portion is formed at a right angle, the metal plate itself can be easily produced. Furthermore, if the cross section of the slit portion of the metal plate is formed at a right angle, it is easy to assemble the metal plate when it abuts against the surface of another metal plate, and the rigidity of the assembly jig is high, which is preferable.

[0023] In this way, if the intersection angle β or β' at the connecting portion 25 where the fitting metal plate 20 intersects with another fitting metal plate 20 is 90 degrees, the metal plate will be stable in the horizontal direction (XY direction), which is preferable from the viewpoint of the rigidity of the assembly jig.

[0024] <Slit-shaped first locking portion 24> Figure 6 is a diagram showing the slit-shaped first locking portion 24 and how it is restricted. A lower metal plate with an upward slit and an upper metal plate with a downward slit intersect at a connecting portion 25 (dotted line in Figure 6). The two metal plates intersect and are locked at the slit-shaped first locking portions 24, each with a slit formed therein. At the connecting portion 25 where each slit-shaped first locking portion 24 intersects, a metal plate extends to its tip.

[0025] Suppose a force is applied to the upper metal plate, for example, in the longitudinal direction of the metal plate (from left to right as shown by the arrow) (Figure 6). The portion of the upper metal plate extending from the connecting portion 25 to the left tip abuts against the lower metal plate that intersects with it, restricting movement in the direction of the force. The presence of the metal plate extending from the connecting portion 25 to the tip restricts movement primarily in the horizontal direction (X and Y directions), fixing each metal plate in place. Therefore, the jig of the present invention has higher horizontal rigidity than a jig without a portion extending tip-wise from the connecting portion 25.

[0026] In this embodiment, two fitting metal plates 20 are arranged in parallel, and the fitting metal plates 20 intersect each other at right angles at the connecting portion 25, with the intersection angle being 90 degrees, and the metal plates are arranged in a grid pattern.

[0027] <Auxiliary Metal Plate 40> FIG. 7 is a perspective view showing an embodiment in which the auxiliary metal plate 40 and the connecting portion 25 are connected in a polygonal shape. In addition to the fitting metal plate 20, an auxiliary metal plate 40 can be used as an assembly jig. The fitting metal plate 20 has a fitting protrusion 22, while the auxiliary metal plate 40 does not have a fitting protrusion 22. The auxiliary metal plate 40 can be positioned vertically or horizontally using a locking means. Examples of the auxiliary metal plate 40 include an auxiliary metal plate 40i (FIG. 7) that is inserted inside the connecting shape of the fitting metal plate 20, and an auxiliary metal plate 40o (FIGS. 1 and 8) that is locked to the outside of the connecting shape of the fitting metal plate 20.

[0028] The auxiliary metal plate 40 is provided with a convex locking portion 44 (second locking portion 43) that extends long. The auxiliary metal plate 40 having the convex locking portion 44 (second locking portion 43) is arranged horizontally ( FIG. 7 ). The fitting metal plate 20 is provided with a locking hole 26 into which the convex locking portion 44 is inserted. The convex locking portion 44 of the auxiliary metal plate 40 is inserted into the locking hole 26 of the fitting metal plate 20, and the metal plates abut against each other to fix them so that they do not move.

[0029] 1 and 8 show other embodiments of the auxiliary metal plate 40 and the locking portion. A plurality of fitting metal plates 20 intersect on the base plate 10, and the auxiliary metal plate 40 is arranged horizontally outside the plurality of fitting metal plates 20. An auxiliary metal plate receiving portion 29 that receives the auxiliary metal plate 40 is formed at the end of the fitting metal plate 20. The auxiliary metal plate 40 is arranged on the outer periphery of the plurality of fitting metal plates 20 while abutting against the auxiliary metal plate receiving portion 29.

[0030] The auxiliary metal plate 40 has L-shaped locking portions 45 (second locking portions 43) at both ends. The L-shaped locking portions 45 are portions that protrude in the short direction of the auxiliary metal plate 40. The two L-shaped locking portions 45 sandwich the side surfaces of the erected fitting metal plate 20 to fix it so that it does not move. In other words, the auxiliary metal plate 40, which is arranged horizontally facing the base plate 10, abuts against the outer periphery of the erected fitting metal plate 20, and sandwiches the side surfaces of the fitting metal plate 20.

[0031] The second locking portion 43 includes an L-shaped locking portion 45 and a convex locking portion 44. The convex second locking portion 44 is provided at the tip of the second locking portion 43 that protrudes in the longitudinal direction of the T-shaped auxiliary metal plate 40. When simply referring to a locking portion, it is not limited to the first locking portion 23 but also includes the second locking portion 43.

[0032] As described above, the auxiliary metal plate 40 has the second locking portion 43 that engages with the fitting metal plate 20 to restrict movement. The auxiliary metal plate 40 contacts and is connected to the fitting metal plate 20 at the second locking portion 43. The auxiliary metal plate 40 and the fitting metal plate 20 are detachably connected to each other at the connecting portion 25.

[0033] <Connection Shape of Metal Plates> A plurality of fitting metal plates 20 and auxiliary metal plates 40 intersect (abut) each other and are connected at their respective connection portions 25. The fitting metal plates 20 and auxiliary metal plates 40 connected at their respective connection portions 25 form a polygonal shape in top view and are connected horizontally (in the X and Y directions) ( FIG. 7 ). The connection shape formed by connecting the connection portions 25 of the metal plates is a polygonal shape connected horizontally (in the X and Y directions) in top view, such as a triangle, a rectangle (parallelogram), or a hexagon. In this embodiment, a plurality (several to several dozen) of connection shapes connected by their respective connection portions 25 are formed in an overlapping manner, as shown in FIGS. 1 , 7 , and 8 .

[0034] Because the polygonal metal plate connecting shapes are formed over a wide range of the base plate 10, the jig has rigidity in the horizontal direction (XY direction), allowing for stable placement of the workpiece to be positioned. Specifically, from the perspective of jig rigidity and stable placement of the workpiece, the ratio of the area of ​​the largest polygon in top view among the overlapping connecting shapes to the area of ​​the base plate 10 is preferably at least 30%, more preferably 50% or more, and even more preferably 70% or more. Furthermore, one to multiple polygonal connecting shapes are formed over a wide range of the base plate 10, and the greater the number of adjacent overlapping polygonal connecting shapes, the greater the rigidity. Specifically, from the perspective of jig rigidity and stable placement of the workpiece, the more preferably there are multiple connecting shapes, more preferably several, and even more preferably a dozen or so.

[0035] Of the multiple fitting metal plates 20, at least one pair of two metal plates may be arranged parallel to one another. This increases the rigidity of the jig, facilitating jig design taking into account the position of the workpiece, and facilitating assembly. If the length of the parallel metal plates is 50% or more, preferably 70% or more, and more preferably 85% or more of the length of the base plate 10, twisting and warping of the jig can be significantly reduced. Furthermore, if the metal plates are arranged parallel to one another with a wide spacing close to the width of the base plate 10, a quadrangle (parallelogram, trapezoid, rectangle, etc.) can be formed as a connected shape, making it easier to grasp the positional relationship of the workpieces and facilitating processing and assembly of the metal plates. The spacing between the parallel metal plates is preferably 60% or more, more preferably 70% or more, and even more preferably 80% or more of the width of the base plate 10. Furthermore, if the metal plates are arranged parallel to one another with a narrow spacing, the jig can also be given other workpiece fixing functions by placing a top plate 60 that is larger than the spacing.

[0036] Furthermore, screw holes 28, 48, 18 may be formed in the fitting metal plate 20, the auxiliary metal plate 40, and the base plate 10. For example, screw holes 48, 18 can be drilled in the horizontally arranged auxiliary metal plate 40 and base plate 10, and as needed, the base plate 10 and the auxiliary metal plate 40 can be fastened and fixed together using fastening members such as screws, bolts, nuts, and washers. This fastening with screws can fix each metal plate in the vertical direction (Z direction), reinforcing the rigidity of the jig and making it stronger, allowing for stable use of the jig. Alternatively, for example, screw holes can be drilled in vertically erected metal plates and fastened together in the horizontal direction.

[0037] <Workpiece receiving surface 70> Figures 7 and 1 are diagrams showing an assembly jig or the like that includes a workpiece receiving surface 70. The notched concave workpiece receiving surface 70 that supports the workpiece to be aligned is provided above the fitting metal plate 20 or the like. Workpiece receiving surfaces 70 that hold the workpieces are provided on the upper ends of multiple metal plates. The shape of the workpiece receiving surface 70 may be concave or convex depending on the type of workpiece.

[0038] Multiple metal plates provided with workpiece receiving surfaces 70 can be arranged parallel or non-parallel depending on the shape of the workpiece. For example, if metal plates of the same shape are arranged parallel, this is more suitable in terms of metal plate design, processing, and jig assembly. Note that the workpiece receiving surface 70 may be provided not only on the fitting metal plate 20 but also on the auxiliary metal plate 40. Furthermore, multiple metal plates can be arranged overlapping with no gaps depending on the shape of the workpiece, etc.

[0039] In the present invention, the workpiece receiving surface 70 is provided integrally with the fitting metal plate 20 or auxiliary metal plate 40, which are erected on the base plate 10 in a crosswise direction, without using any other members. This results in a reduction in weight without increasing the number of parts, and also simplifies assembly.

[0040] 8 is a perspective view showing an example of an assembly jig 1 according to another embodiment. A plurality of fitting metal plates 20 are erected on a base plate 10, and the fitting metal plates 20 are arranged crosswise in a grid pattern. The metal plates are connected by connecting portions 25 (locking portions), and the connecting shape of the connecting portions 25 forms a polygon. Auxiliary metal plates 40 abut against the outer ends of the fitting metal plates 20 to restrict movement of the metal plates.

[0041] A small top plate 60 is placed on top of the metal plates 20 that are arranged in parallel, and a clamp 73, which is a fastener, is placed on top of the top plate 60. A plurality of protrusions are formed on the top of the metal plate 20, and the top plate 60 is placed with a square hole. The protrusions on the top of the metal plate 20 fit into the square holes of the top plate 60. An even smaller square hole is opened in the protrusion on the top of the metal plate 20. A small pressing plate, which is a locking device 63, is inserted into the square hole in the protrusion of the metal plate 20 while making contact with the top surface of the top plate 60, and the top plate 60 is fixed.

[0042] The clamp 73 and the top plate 60 have screw holes, and can be fastened together with screws by aligning the screw holes. A workpiece receiving surface 70 and top plate 60 are provided above the lattice-shaped metal plate, and a clamp 73 is provided on top of the top plate 60. The workpiece is placed on the workpiece receiving surface 70 and pressed down with the clamp 73, thereby fixing the workpiece. A space exists below the assembly position of the workpiece, along with the lattice-shaped metal plate. When welding the workpiece, the air space provides excellent heat dissipation.

[0043] In addition to the clamps 73, components such as a fitting guide set that presses the workpiece in a reference direction to accurately align the components can also be placed on the top plate 60. A pilot punch can also be used. If necessary, screw holes may be provided in the various metal plates (insertion metal plate 20, auxiliary metal plate 40, etc.), fasteners, and locking devices 63.

[0044] In the present invention, the metal plates are interconnected without welding the base plate 10 and the fitting metal plate 20, and the positional relationship is stably maintained throughout the jig. Furthermore, the jig can be disassembled when making design changes or fine adjustments to the part (workpiece). Also, metal plates that require dimensional adjustment can be reprocessed and reassembled using existing metal plates. This makes it possible to accommodate design changes and fine adjustments. The jig can be assembled in a short time during the prototype stage or when making design changes, which is convenient.

[0045] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above embodiments, and various modifications are possible without departing from the spirit of the invention. In particular, the examples described in this specification can be arbitrarily combined as necessary.

[0046] 1 Assembly jig 10 Base plate 12 Fitting hole (square hole) 18 Screw hole (round hole opened in base plate) 20 Fitting metal plate 21 Abutment portion 22 Fitting convex portion 23 First locking portion 24 Slit-shaped first locking portion 24d Downward slit-shaped first locking portion 24u Upward slit-shaped first locking portion 25 Connecting portion 26 Locking hole portion (hole portion that engages with the convex portion of the auxiliary metal plate) 28 Screw hole (hole opened in the fitting metal plate) 29 Auxiliary metal plate receiving portion 40 Auxiliary metal plate 40i Auxiliary metal plate inserted inside the connecting shape of the metal plates 40o Auxiliary metal plate that engages with the outside of the connecting shape of the metal plates 43 Second locking portion 44 Convex locking portion 45 L-shaped locking portion 48 Screw hole (hole in auxiliary metal plate) 60 Top plate 63 Locking device (small holding plate) 70 Workpiece receiving surface 73 Clamp

Claims

1. A jig comprising: a metal base plate having a hole; and a plurality of fitting metal plates having mating protrusions that detachably fit into the holes of the base plate and are fixed to the base plate, wherein the fitting metal plates are provided with a plurality of first locking portions that engage with and lock into place, and the plurality of fitting metal plates cross and are connected by the first locking portions, and are detachably locked by the connecting portions that connect them.

2. The jig described in claim 1, further comprising an auxiliary metal plate reinforcing the metal plate to be fitted, the auxiliary metal plate having a second engagement portion and removably engaged with the metal plate to be fitted at the connecting portion, the multiple metal plates to be fitted and the auxiliary metal plate being connected to each other by crossing each other, and the connecting portion being connected horizontally in a polygonal shape when viewed from above.

3. The jig according to claim 2, wherein the auxiliary metal plate, which is arranged horizontally facing the base plate, abuts against the outer periphery of the fitting metal plate standing on the base plate, while clamping the side of the fitting metal plate.

4. The jig according to claim 1, wherein the intersecting angle between the pair of fitting metal plates at the connecting portion is 90 degrees.

5. A jig as claimed in any one of claims 1 to 4, wherein the fitting metal plate or the auxiliary metal plate has a concave workpiece receiving surface for positioning and supporting the workpiece to be positioned.

Images