JP2016026889A - Workpiece positioning structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a workpiece positioning structure which accurately positions two workpieces with a sufficient fitting force without using a positioning jig etc.SOLUTION: Superposed plate-like parts 1a, 2a of workpieces 1, 2 include a recessed part 5 and a protruding part 8 which are inversion portions where plate fitting of the superposed plate-like parts 1a, 2a of the workpieces 1, 2 is inverted in a vertical direction when the workpieces are superposed. The superposed plate-like part 1a of the one workpiece 1 includes a fitting protruding part 10 and a one-side opening part 11 into which an end part of the superposed plate-like part 2a of the other workpiece 2 fits when the workpieces are superposed. The superposed plate-like part 2a of the other workpiece 2 has an other-side opening part 21 in which the fitting protruding part 10 provided in the superposed plate-like part 1a of the one workpiece 1 fits. The structure accurately determines relative positions of the workpieces 1, 2 in vertical and horizontal directions.SELECTED DRAWING: Figure 1

Description

  The present invention mainly relates to a positioning structure and a positioning method for positioning each overlapping plate-like portion of two workpieces so as to abut each other from their end portions.

  Conventionally, various positioning structures and positioning methods for positioning and assembling two workpieces have been proposed. Therefore, as a positioning structure for positioning and assembling two workpieces without using a positioning jig, for example, in Patent Document 1, a thin plate-like protrusion formed on one sheet metal is formed on the other sheet metal. In the sheet metal positioning structure in which the bulging portions formed facing the inside of the opening sandwich the sheet metal in the thickness direction, the bulging portions abut one surface of the protruding portion. At least one one-side bulging portion and the other side which is bulged on both the left and right sides sandwiching the one-side bulging portion so as to face the one-side bulging portion and abuts against the other surface of the protruding portion A sheet metal positioning structure including a bulging portion is disclosed (claim 1).

  However, the positioning structure according to Patent Document 1 does not use a positioning jig, but does not have a sufficient fitting force, and the shape of the opening having a plurality of bulging portions formed on the other sheet metal is complicated. In addition, since the press mold yield strength decreases, press molding becomes impossible and it is difficult to employ.

JP 2008-116619 A

  As described above, in the positioning structure according to Patent Document 1, the fitting force between the two is not sufficient, and press molding is impossible and it is difficult to employ.

  The present invention has been made in view of the above points, and a workpiece positioning structure and positioning method capable of accurately positioning two workpieces with a sufficient fitting force without using a positioning jig or the like. The purpose is to provide.

In order to solve the above-mentioned problems, the workpiece positioning structure of the present invention includes a reversal portion where the overlapped plate-like portion of each workpiece is turned upside down during the polymerization, The superposed plate-like portion of the one workpiece includes a fitting convex portion arranged on the end side of the superposed plate-like portion and projecting toward the overlapping side, and the superposed plate continuously from the fitting convex portion. Arranged on the back side of the shaped part, and at the time of polymerization, the one side receiving part to which the end of the polymerized plate-like part of the other work is fitted, the superposed plate-like part of the other work is at the time of polymerization, It has the other side receiving part which the said fitting convex part provided in the superposition | polymerization plate-shaped part of said one workpiece | work fits.
Further, the workpiece positioning structure of the present invention is such that the overlapped plate-like portion of each workpiece has a reversal portion where the alignment of the overlapped plate-like portions of each workpiece is inverted upside down during the overlapping, The plywood portion includes a burring portion having an annular flange portion projecting toward the overlapping side, and the overlapping plate portion of the other workpiece is provided on the overlapping plate portion of the one workpiece during polymerization. Further, it is characterized in that the other side receiving portion into which the annular flange portion of the burring portion is fitted is provided.
Further, in the work positioning method of the present invention, the overlapped plate-like portion of each work is provided with a reversal portion where the alignment of the overlapped plate-like portions of each work is reversed upside down during the polymerization, At the same time, the end portions of the overlapping plate-like portions of the other workpiece are provided on the overlapping plate-like portion on the one workpiece. And the fitting convex portion provided on the overlapping plate-like portion of the one workpiece is fitted to the other-side receiving portion provided on the overlapping plate-like portion of the other workpiece. It is characterized by.
Furthermore, in the work positioning method of the present invention, the overlapped plate-like portion of each work is provided with a reversal portion where the alignment of the overlapped plate-like portions of each work is turned upside down during the polymerization, At the same time, the annular portion of the burring portion provided on the overlapped plate-like portion of the one workpiece is made to overlap with the other portion through the reversal portion so as to approach each other from the end portion. It is characterized by being fitted to the other side receiving part provided in the superposed plate-like part of the workpiece.
Thereby, it is possible to accurately position and assemble two workpieces with a sufficient fitting force without using a positioning jig or the like.
Various aspects of the workpiece positioning structure and positioning method of the present invention and their functions will be described in detail in the section of the aspect of the invention below.

(Aspect of the Invention)
In the following, some aspects of the invention that can be claimed in the present application (hereinafter sometimes referred to as “claimable invention”) will be exemplified and described. In addition, each aspect is divided into a term like a claim, it attaches | subjects a number to each term, and is described in the format which quotes another term as needed. This is for the purpose of facilitating the understanding of the claimable invention, and is not intended to limit the combinations of the constituent elements constituting the claimable invention to those described in the following sections. In other words, the claimable invention should be construed in consideration of the description, embodiments, etc. accompanying each section, and as long as the interpretation is followed, there may be embodiments in which other constituent elements are added to the aspects of each section. In addition, an aspect in which the constituent elements are deleted from the aspect of each item can be an aspect of the claimable invention.

(1) A positioning structure in which the overlapping plate-like portions of two workpieces are positioned to overlap each other so as to abut against each other, and the overlapping plate-like portions of each workpiece are overlapped during polymerization. A fitting portion is provided that has a reversal portion where the plate alignment of the shaped portions is reversed up and down, and the overlapped plate-like portion of the one workpiece is disposed on the end side of the overlapped plate-like portion and protrudes toward the overlapping side A convex portion and a one-side receiving portion that is arranged continuously from the fitting convex portion on the back side of the superposed plate-like portion and is fitted with an end portion of the superposed plate-like portion of the other workpiece during superposition. And the other workpiece overlap plate-like portion is provided with the other-side receiving portion into which the fitting convex portion provided on the overlap plate-like portion of the one workpiece is fitted during polymerization. Positioning structure (corresponding to claim 1).
In the workpiece positioning structure according to item (1), the overlapped plate-like portions of the respective workpieces are brought close to each other so as to abut against each other and overlapped via the reversal portion, and at the same time, the overlapped plate-like portion of the other workpiece The end of the part is fitted to the one-side receiving part provided on the superposed plate-like part on one work, and the fitting convex part provided on the superposed plate-like part of the one work is fitted to the superposed plate of the other work The relative vertical and horizontal positions of each workpiece are determined by fitting into the other side receiving portion provided in the shape portion. In addition, the relative vertical and horizontal movement of each workpiece is mechanically restricted, so that the fitting force of each workpiece is sufficient.

(2) The superposed plate-like portion of the one workpiece is provided with a stopper convex portion that is arranged continuously from the one-side receiving portion on the back side of the superposed plate-like portion and protrudes toward the overlapping side. The workpiece positioning structure according to item (1) (corresponding to claim 2).
In the workpiece positioning structure of item (2), when the overlapping plate-like portions of each workpiece are brought close to each other so as to abut against each other and overlapped via the reversal part, the end surface of the overlapping plate-like portion of the other workpiece Movement of each workpiece in the relative abutting direction is restricted at the time when it comes into contact with the stopper projection provided on the overlap plate portion of one workpiece, and the end of the overlap plate portion of the other workpiece is The other side provided with the fitting convex part provided in the superposition plate-like part of the other work is fitted to the one-side receiving part provided in the superposition plate-like part of the work. Fit into the receiving part.

(3) The entire overlapped plate-like portion protrudes in a cup shape along the top surface of the fitting convex portion provided on the overlapped plate-like portion of the one workpiece at the edge of the overlapped plate-like portion of the other workpiece. The workpiece positioning structure according to item (1) or (2), characterized in that the workpiece positioning structure is provided (equivalent to claim 3).
In the workpiece positioning structure according to item (3), when the overlapping plate-like portions of the respective workpieces are brought close to each other so as to abut against each other and overlapped via the reversal part, the end of the overlapping plate-like portion of the other workpiece The concave surface of the guide convex portion provided on the edge is guided along the top surface of the fitting convex portion provided on the overlapping plate-like portion of one workpiece, and the end portion of the overlapping plate-like portion of the other workpiece is One work piece is fitted to the one-side receiving part provided on the superposed plate-like part, and the fitting convex part provided on the superposed plate-like part of one work piece is provided on the superposed plate-like part of the other work piece. The other side receiving part is fitted.

(4) The workpiece positioning structure according to (3), wherein an end of the overlapped plate-like portion of the other workpiece fitted to the one-side receiving portion includes the guide convex portion ( Equivalent to claim 4).
In the workpiece positioning structure of (4), the end portion including the guide convex portion of the overlapped plate-like portion of the other workpiece is smoothly fitted to the one-side receiving portion provided on the overlapped plate-like portion of one workpiece. The

(5) The stopper convex portion is formed in a semicircular shape in a plan view in which a curved range faces the back side of the overlapped plate-like portion of the one workpiece, and the fitting convex portion has a curved range of the one workpiece. It is formed in a semicircular shape in plan view facing the end side of the overlap plate-like part, the stopper convex part is formed with a larger diameter than the fitting convex part, and the stopper convex part is more than the fitting convex part. The workpiece positioning structure according to any one of (2) to (4), wherein the protruding height is formed high.
In the workpiece positioning structure of (5), the fitting between the end of the overlapped plate-like portion of the other workpiece and the one-side receiving portion provided on the overlapped plate-like portion of the one workpiece, and the overlapped plate of the one workpiece The fitting convex portion provided in the shape portion and the fitting of the other side receiving portion provided in the overlapped plate-like portion of the other workpiece are each smoothly achieved.

(6) The guide convex portion is formed in a semicircular shape in plan view, the linear range of which extends on the edge of the overlapping plate-like portion of the other workpiece, and the guide convex portion has a larger diameter than the fitting convex portion. The workpiece positioning structure according to any one of (3) to (5), wherein the workpiece is formed to have a smaller diameter than the stopper convex portion.
In the workpiece positioning structure of (6), the end of the overlapping plate-like portion of the other workpiece is smoothly guided by the guide convex portion to the one-side receiving portion provided on the overlapping plate-like portion of one workpiece. Workability is improved.

(7) The one-side receiving portion is a one-side opening provided in the up-down direction through the overlapped plate-like portion of the one workpiece, and the other-side receiving portion is a weight of the other workpiece. The workpiece positioning structure according to any one of items (1) to (6), wherein the workpiece is an opening on the other side provided through the plywood portion in the vertical direction.
In the workpiece positioning structure of (7), the positioning structure can be easily formed.

(8) The fitting convex portion is configured by projecting the entire overlapped plate-like portion of the one workpiece in a cup shape, according to any one of (1) to (7), Workpiece positioning structure.
In the workpiece positioning structure according to item (8), when each workpiece is a press-molded product, the fitting convex portion can be easily molded.

(9) A positioning structure in which the overlapping plate-like portions of two workpieces are overlapped and positioned so as to abut each other from their end portions, and the overlapping plate-like portions of each workpiece are overlapped during polymerization. A plate portion of the one workpiece is provided with a burring portion having an annular flange portion projecting toward the overlapping side.
The overlapped plate-like portion of the other workpiece includes a receiving portion on the other side to which an annular flange portion of the burring portion provided on the overlapped plate-like portion of the one workpiece is fitted during polymerization. Work positioning structure (corresponding to claim 5).
In the workpiece positioning structure according to item (9), the overlapped plate-like portions of the respective workpieces are brought close to each other so as to abut against each other and overlapped via the reversal portion, and at the same time, the overlapped plate-like portion of one workpiece The relative vertical and horizontal positions of each work are determined by fitting the annular flange part of the burring part provided in the part to the other side receiving part provided in the overlapping plate-like part of the other work Is done. In addition, the relative vertical and horizontal movement of each workpiece is mechanically restricted, so that the fitting force of each workpiece is sufficient.

(10) An annular flange portion of a burring portion provided on the overlap plate portion of the one workpiece is provided at an edge of the overlap plate portion of the other workpiece on the overlap plate portion of the other workpiece. A workpiece positioning structure according to item (9), characterized in that a guide portion for guiding the other side receiving portion is formed (corresponding to claim 6).
In the workpiece positioning structure according to item (10), when the overlapping plate-like portions of each workpiece are brought close to each other so as to abut against each other and overlapped via the reversal portion, the workpiece is provided on the overlapping plate-like portion of one workpiece. The tip of the annular flange part of the burring part fits on the other side receiving part provided in the superposed plate-like part of the other work along the guide part without interfering with the end of the superposed plate-like part of the other work. Combined.

(11) The workpiece according to (10), wherein the guide portion includes an inclined portion that extends from the end of the overlapped plate-like portion of the other workpiece in a direction opposite to the overlapping side. Positioning structure.
In the workpiece positioning structure of item (11), when the overlapping plate-like portions of each workpiece are brought close to each other so as to abut against each other and overlapped via the reversal part, burring of the overlapping plate-like portion of one workpiece is performed. The tip of the annular flange portion of the processing portion is guided along the inclined portion of the guide portion to the other side receiving portion provided on the overlapping plate-like portion of the other workpiece.

(12) The workpiece positioning structure according to any one of (1) to (11), wherein the workpiece is a press-formed product (corresponding to claim 7).
In the workpiece positioning structure according to item (12), the press-formed products can be positioned with high accuracy without using a positioning jig.

(13) A positioning method for positioning each overlapped plate-like portion of two workpieces so as to abut each other from their ends, wherein the overlapped plate-like portion of each workpiece is overlapped at the time of polymerization. The plate-like portion of the workpiece is provided with a reversing portion that is turned upside down, and the overlapping plate-like portions of the workpieces are brought close together so as to abut each other through the reversing portion, and at the same time, The end of the overlapped plate-like portion of the workpiece is fitted to the one side receiving portion provided on the overlapped plate-like portion on the one workpiece, and the fitting convex portion provided on the overlapped plate-like portion of the one workpiece is provided. A work positioning method (corresponding to claim 8), wherein the work piece is fitted to the other receiving part provided on the overlapped plate-like part of the other work.
In the workpiece positioning method of (13), the overlapped plate-like portions of the respective workpieces are brought close to each other so as to abut against each other and overlapped via the reversal part, and at the same time, the overlapped plate-like portion of the other workpiece The end of the part is fitted to the one-side receiving part provided on the superposed plate-like part on one work, and the fitting convex part provided on the superposed plate-like part of the one work is fitted to the superposed plate of the other work The relative vertical and horizontal positions of each workpiece are determined by fitting into the other side receiving portion provided in the shape portion.

(14) The one-side receiving part is a one-side opening provided by penetrating the overlapping plate-like part of the one workpiece in the vertical direction, and the other-side receiving part is a overlapping plate-like part of the other workpiece. The workpiece positioning method according to item (13), characterized in that the opening is the other side opening provided through the portion in the vertical direction.
In the workpiece positioning method of (14), the positioning structure can be easily formed.

(15) A positioning method for positioning each overlapped plate-like portion of two workpieces so as to abut each other from their end portions, wherein the overlapped plate-like portion of each workpiece is overlapped at the time of polymerization. The plate-like portion of the workpiece is provided with a reversing portion that is turned upside down, and the overlapping plate-like portions of each workpiece are superposed through the reversing portion in close proximity to each other so as to abut each other. A workpiece positioning method comprising: fitting an annular flange portion of a burring portion provided on a superposed plate-like portion of a workpiece to an other-side receiving portion provided on the superposed plate-like portion of the other workpiece (claim). Equivalent to 9).
In the work positioning method according to the item (15), the overlapped plate-like portions of the respective workpieces are brought close to each other so as to abut against each other and overlapped via the reversal portion, and at the same time, the overlapped plate-like portion of one work piece The relative vertical and horizontal positions of each work are determined by fitting the annular flange part of the burring part provided in the part to the other side receiving part provided in the overlapping plate-like part of the other work Is done.

  According to the present invention, it is possible to provide a workpiece positioning structure and a positioning method capable of accurately positioning two workpieces with a sufficient fitting force without using a positioning jig or the like.

FIG. 1 shows a workpiece positioning structure according to the first embodiment of the present invention, and (a) to (c) are diagrams showing stepwise until the overlapped plate-like portion of each workpiece is positioned. . FIG. 2 shows a workpiece positioning structure according to the second embodiment of the present invention, and (a) to (c) are diagrams showing stepwise until the overlapped plate-like portion of each workpiece is positioned. . FIG. 3 shows a workpiece positioning structure according to the third embodiment of the present invention, and (a) to (c) are diagrams showing stepwise until the overlapped plate-like portion of each workpiece is positioned. . FIG. 4 is a diagram illustrating how the direction of each workpiece is corrected when the overlapping direction of each workpiece is slightly shifted in the third embodiment.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to FIGS.
First, a workpiece positioning structure according to a first embodiment of the present invention will be described with reference to FIG. Each of the workpieces 1 and 2 in which the workpiece positioning structure is adopted in the first embodiment is a press-formed product. The workpieces 1 and 2 are respectively formed with superposed plate-like portions 1a and 2a that are positioned so as to overlap each other in the vicinity of their end portions. And in this positioning structure, it superimposes and positions each superposition | stacking plate-like part 1a, 2a of the two workpiece | works 1 and 2 so that it may mutually face | abut.

  Of the two workpieces 1 and 2, the overlapped plate-like portion 1 a of one of the workpieces 1 is provided with a recess 5 that is recessed from the reference surface 1 b of the overlapped plate-like portion 1 a at the end thereof. The recess 5 is formed by recessing the overlapped plate-like portion 1a of the work 1 as a whole. Moreover, this recessed part 5 is corresponded to the inversion site | part which reverses the board alignment of the superposition | polymerization plate-shaped parts 1a and 2a of each workpiece | work 1 and 2 up and down. The boundary between the recess 5 and the reference surface 1b is formed such that the end is recessed inward. Moreover, the fitting convex part 10 protruding toward the overlapping side is formed on the bottom surface of the concave part 5 of the overlapped plate-like part 1a of one workpiece 1. The fitting convex portion 10 is configured by projecting the entire superposed plate-like portion 1a in a cup shape. The fitting convex part 10 is provided in the edge part side of the superposition | polymerization plate-shaped part 1a. The fitting convex portion 10 is formed in a semicircular shape in a plan view in which the curved range faces the end side of the superposed plate-like portion 1a. A one-side opening 11 as a one-side receiving part is formed on the back side of the overlapped plate-like part 1 a continuously from the fitting convex part 10. The one-side opening 11 is configured to penetrate the overlapped plate-like portion 1a in the vertical direction. The one side opening 11 is formed in a rectangular shape in plan view. Further, a stopper convex portion 12 projects from the bottom surface of the concave portion 5 of the superposed plate-like portion 1a of one workpiece 1 continuously from the one-side opening 11 to the back side of the superposed plate-like portion 1a. The stopper convex portion 12 is configured by projecting the entire overlapping plate-shaped portion 1a in a cup shape in the same direction as the projecting direction of the fitting convex portion 10. The stopper convex portion 12 is formed in a semicircular shape in a plan view in which the curved range faces the back side of the superposed plate-like portion 1a. The fitting convex portion 10 and the stopper convex portion 12 are formed to have substantially the same outer diameter, and the protruding height is also formed to be substantially the same. In addition, although the one side opening part 11 is formed in a rectangular shape, the length of the long side is slightly larger than the outer diameter of the stopper convex part 12 or the fitting convex part 10, and the length of the short side is the stopper convex part. 12 substantially coincides with the distance between the fitting convex portion 10.

  Of the two workpieces, the overlapping plate-like portion 2a of the other workpiece 2 is provided with a convex portion 8 protruding from the reference surface 2b of the overlapping plate-like portion 2a at the end thereof. The convex portion 8 is formed by projecting the overlapping plate-like portion 2a of the work 2 as a whole. Further, the convex portion 8 corresponds to a reversal portion that reverses the plate alignment of the superposed plate-like portions 1a and 2a of the workpieces 1 and 2 up and down. The boundary between the convex portion 8 and the reference surface 2b is formed so that the end portion is recessed inward. Further, the convex portion 8 of the superposed plate-like portion 2a of the other work 2 is provided in the concave portion 5 of the superposed plate-like portion 1a of one work 1 when the superposed plate-like portions 1a and 2a of the respective works 1 and 2 are superposed. The other side opening 21 as the other side receiving part is formed at the position where the fitting convex part 10 is arranged. The other side opening 21 is configured to penetrate the overlapped plate-like portion 2a in the vertical direction. The other side opening 21 is formed in a bowl shape in a plan view in which the curved range faces the back side of the overlapped plate-like portion 2a. The other-side opening 21 is formed such that the opening width in the direction along the end of the overlapping plate-like portion 2a is slightly larger than the radius of the fitting convex portion 10 provided on the overlapping plate-like portion 1a of one workpiece 1. The In addition, in the superposed plate-like portion 2a of the other work 2, the end width between the other-side opening 21 and the end edge of the superposed plate-like portion 2a is the fit in the superposed plate-like portion 1a of the one work 1. This substantially coincides with the opening width of the one-side opening 11 between the joint protrusion 10 and the stopper protrusion 12. In addition, in the recessed part 5 of the superposition | polymerization plate-shaped part 1a of one workpiece | work 1, the length of the direction in alignment with the edge part of the superposition | polymerization plate-like part 1a, and the superposition | polymerization board in the convex part 8 of the superposition | polymerization plate-like part 2a of the other work 2 The length in the direction along the end of the shape portion 2a is substantially the same.

Next, a positioning method in the workpiece positioning structure according to the first embodiment will be described with reference to FIG.
First, the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 are brought close to each other so as to abut against each other, and the other workpiece 2 is placed in the recess 5 provided in the overlapping plate-like portion 1a of one workpiece 1. The convex portions 8 provided in the superposed plate-like portion 2a are fitted and overlapped. As a result, a part (inverted part) is formed in which the plate alignment of the superposed plate-like portions 1a, 2a of the workpieces 1, 2 is inverted up and down with respect to the superposition relationship of the reference surfaces 1b, 2b. The relative positions in the vertical direction are determined, and the relative positions of the workpieces 1 and 2 in the direction along the ends of the overlapped plate-like portions 1a and 2a are determined.
At the same time, the end portion between the other side opening 21 and the edge of the overlap plate portion 2a in the convex portion 8 of the overlap plate portion 2a of the other workpiece 2 is the overlap plate shape of the one workpiece 1. One side opening between the fitting convex portion 10 and the stopper convex portion 12 while moving while contacting the top surface of the fitting convex portion 10 provided in the concave portion 5 of the portion 1a and interfering with the stopper convex portion 12 11 is fitted. At this time, the end portion of the overlapped plate-like portion 2a of the other work 2 comes into contact with both of them so as to be sandwiched between the fitting convex portion 10 and the stopper convex portion 12 of the overlapped plate-like portion of the one workpiece 1. And are tightly fitted. Further, the fitting convex portion 10 provided in the concave portion 5 of the superposed plate-like portion 1a of one work 1 is fitted into the other side opening portion 21 provided in the convex portion 8 of the superposed plate-like portion 2a of the other work 2. Combined. As a result, the relative positions of the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 (the direction perpendicular to the direction along the ends of the overlapping plate-like portions 1a and 2a) are determined. The relative horizontal position of the workpieces 1 and 2 is determined.

  According to the first embodiment of the present invention described above, the overlapped plate-like portions 1a and 2a of the workpieces 1 and 2 are brought close to each other so as to abut against each other, and the overlapped plate-like shape of one workpiece 1 is obtained. The concave portion 5 provided in the portion 1a is overlapped with the convex portion 8 provided in the superposed plate-like portion 2a of the other work 2 so as to be fitted to each other, and at the same time, the superposed plate-like portion 2a of the other work 2 The end portion is fitted in the one side opening 11 between the fitting convex portion 10 and the stopper convex portion 12 provided on the superposed plate-like portion 1a of one work 1, and the superposed plate of one work 1 The fitting convex part 10 provided in the shaped part 1a is fitted in the other side opening part 21 provided in the overlapping plate-like part 2a of the other work 2, so that the relative vertical direction of each work 1 and 2 is achieved. And a horizontal position is determined. Thus, the workpieces 1 and 2 can be accurately positioned without using a positioning jig.

  In addition, according to the first embodiment of the present invention, since the relative vertical and horizontal positioning of the workpieces 1 and 2 is mechanically constructed, the fitting force of the workpieces 1 and 2 is sufficient. Become. As a result, the workpieces 1 and 2 can be positioned and transported in a temporarily assembled state, and the workpieces 1 and 2 can be positioned by the operator in any process. As a result, the degree of freedom of work classification and process layout increases.

  Furthermore, in the first embodiment of the present invention, when the overlapped plate-like portions 1a and 2a of the workpieces 1 and 2 are overlapped, the end portion of the overlapped plate-like portion 2a of the other workpiece 2 is the one of the workpieces 1. The fitting projection provided in the overlapping plate-like portion 1a of one workpiece 1 while fitting into the one-side opening 11 between the fitting protruding portion 10 and the stopper protruding portion 12 provided in the overlapping plate-like portion 1a. The operator confirms the completion of positioning of the workpieces 1 and 2 by the fitting sound when the portion 10 is fitted into the other side opening 21 provided on the overlapped plate-like portion 2a of the other workpiece 2. Workability is improved.

  Furthermore, according to the first embodiment of the present invention, the dedicated holding jig for holding the sub-assembly composed of a plurality of workpieces positioned as described above, such as when assembling the positioned workpieces 1 and 2 by welding. Therefore, the configuration can be made much simpler than a dedicated holding jig for holding each of a plurality of workpieces as in the prior art. Furthermore, in the first embodiment of the present invention, a plurality of stationary welders are arranged at intervals on the welding line, and the operator positions, for example, the first workpiece and the second workpiece described above. A sub-assembly is formed by positioning by the method, a predetermined position of the work sub-assembled by the first stationary welding machine is welded, and then the third work is positioned on the work welded by the operator as described above. Positioning by the method, it becomes possible to weld a predetermined position of the workpiece further sub-assembled by the next stationary welding machine. Since a series of these welding operations can be performed without using a large-scale dedicated jig or the like, it is possible to easily cope with fluctuations in the number of production units, thereby reducing investment in production facilities.

  In addition, in 1st Embodiment, the recessed part 5 which has the fitting convex part 10, the one side opening part 11, and the stopper convex part 12 in the superposition | polymerization plate-shaped part 1a, 2a of each workpiece | work 1, 2, and the other side opening part. Although the convex part 8 which has 21 is each provided in one place, you may form in multiple places. Moreover, in 1st Embodiment, the fitting convex part 10, the one side opening part 11, and the stopper convex part 12 are provided in the recessed part 5 of the overlapping plate-shaped part 1a of one workpiece | work 1, and the overlapping plate shape of the other workpiece | work 2 is provided. The other side opening 21 is provided on the convex part 8 of the part 2a, but the fitting convex part 10, the one side opening part 11 and the stopper convex part 12 are provided on the convex part 8 of the overlapping plate-like part 2a of the other work 2. The other-side opening 21 may be provided in the concave portion 5 of the superposed plate-like portion 1a of one workpiece 1.

  Furthermore, in 1st Embodiment, the fitting convex part 10, the one side opening part 11, and the stopper convex part 12 are formed in the range of the recessed part 5 of the superposition | stacking plate-shaped part 1a of one workpiece | work 1, and the other workpiece | work 2 is formed. The other-side opening 21 is formed within the range of the convex portion 8 of the superposed plate-like portion 2a, but the fitting convex portion 10, the one-side opening portion 11 and the stopper convex portion 12 are used as the superposed plate of one workpiece 1. It is not necessary to provide in the range of the recessed part 5 of the shape part 1a, and you may form in the other location (reference surface 1b) of the superposition | polymerization plate-shaped part 1a of one workpiece | work 1. FIG. Further, it is not necessary to provide the other-side opening 21 within the range of the convex portion 8 of the overlapped plate-like portion 2a of the other work 2, and other portions (reference surface 2b) of the overlapped plate-like portion 2a of the other work 2 Therefore, it may be formed at a position corresponding to the fitting convex portion 10, the one side opening portion 11, and the stopper convex portion 12 provided on the overlapped plate-like portion 1 a of one workpiece 1.

Next, a workpiece positioning structure according to a second embodiment of the present invention will be described with reference to FIG. In describing the workpiece positioning structure according to the second embodiment, only the differences from the workpiece positioning structure according to the first embodiment will be described.
A burring portion 14 having an annular flange portion 13 projecting toward the overlapping side is provided on the lower surface of the convex portion 6 projecting from the reference surface 1b of the overlapped plate-like portion 1a of one workpiece 1. .
A burring portion 14 provided on the convex portion 6 of the superposed plate-like portion 1a of one work 1 is provided in the concave portion 7 that is recessed with respect to the reference surface 2b of the superposed plate-like portion 2a of the other work 2. The other-side opening 22 as the other-side receiving portion is provided at a position where is disposed. The inner diameter of the opening 22 on the other side substantially matches the outer diameter of the annular flange portion 13 of the burring portion 14. In addition, an annular flange portion 13 of a burring portion 14 provided on the overlap plate-like portion 1 a of one work 1 is connected to an end edge of the concave portion 7 of the overlap plate-like portion 2 a of the other work 2. A guide portion 23 is formed to guide the other side opening portion 22 provided in the overlapping plate-like portion 2a. The guide part 23 is connected to an inclined part 25 extending from the end of the concave part 7 of the overlapping plate-like part 2 a of the other work 2 in an opposite direction to the overlapping side, and to the tip of the inclined part 25. And a plane portion 24. The flat surface portion 24 is a position where the tip of the annular flange portion 13 of the burring portion 14 provided on the overlapping plate-like portion 1a of one workpiece 1 abuts when the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 are overlapped. It is provided at a position where it does not interfere with the tip. The plane part 24 is formed in a D-shape in plan view including the linear edge of the superposed plate-like part 2a. The inclined portion 25 is formed along the curved portion of the planar portion 24 in plan view, and is formed so as to connect the curved portion of the planar portion 24 and the bottom surface of the concave portion 7. In addition, the formation range along the edge part of the superposition | polymerization plate-shaped part 2a of the inclination part 25 is set larger than the outer diameter of the other side opening part 22 provided in the superposition | polymerization plate-like part 2a of the other workpiece | work 2. In addition, in the convex part 6 of the superposition | polymerization plate-shaped part 1a of one workpiece | work 1, the length of the direction along the edge part of the superposition | polymerization plate-like part 1a, and the superposition | polymerization board in the recessed part 7 of the superposition | polymerization plate-like part 2a of the other workpiece | work 2 The length in the direction along the end of the shape portion 2a is substantially the same.

Next, the positioning method in the workpiece positioning structure according to the second embodiment will be described.
First, the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 are brought close to each other so as to abut against each other, and the other workpiece is placed on the convex portion 6 provided on the overlapping plate-like portion 1a of one workpiece 1. The concave portions 7 provided in the two superposed plate-like portions 2a are fitted and overlapped. As a result, a portion (inverted portion) is formed in which the plate alignment of the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 is inverted up and down with respect to the overlapping relationship of the reference surfaces 1b and 2b. The relative vertical positions of 1 and 2 are determined, and the relative positions of the workpieces 1 and 2 along the ends of the overlapped plate-like portions 1a and 2a are determined.
At the same time, the annular flange portion 13 of the burring portion 14 provided on the overlapped plate-like portion 1a of one workpiece 1 is along the plane portion 24 and the inclined portion 25 provided on the overlapped plate-like portion 2a of the other workpiece 2. Thus, the bottom surface of the recess 7 is reached, and finally the annular flange portion 13 is tightly fitted into the other side opening 22. As a result, the relative horizontal positions of the workpieces 1 and 2 are determined.
And also in the 2nd Embodiment of this invention, there can exist an effect similar to 1st Embodiment.

  In the second embodiment, the burring portion 14 having the annular flange portion 13 is provided on the convex portion 6 of the superposed plate-like portion 1a of one work 1, and the concave portion 7 of the superposed plate-like portion 2a of the other work 2 is provided. The other side opening 22 and the guide part 23 are provided on the other side. However, the other side opening 22 and the guide part 23 are provided on the convex part 6 of the overlapping plate-like part 1 a of one work 1, and the overlapping plate shape of the other work 2 is provided. You may provide the burring process part 14 which has the annular flange part 13 in the recessed part 7 of the part 2a.

  Furthermore, in 2nd Embodiment, the burring process part 14 which has the annular flange part 13 in the range of the convex part 6 of the superposition | polymerization plate-like part 1a of one workpiece | work 1 is formed, and the superposition | polymerization plate-like part of the other workpiece | work 2 The opening 22 on the other side is formed in the range of the concave portion 7a of 2a, but the burring portion 14 having the annular flange portion 13 is provided in the range of the convex portion 6 of the superposed plate-like portion 1a of one workpiece 1. It is not necessary, and it may be formed at another location (reference surface 1b) of the superposed plate-like portion 1a of one workpiece 1. Further, it is not necessary to provide the other-side opening 22 in the range of the concave portion 7 of the overlapped plate-like portion 2a of the other workpiece 2, and the other opening 2 is provided at another location (reference surface 2b) of the overlapped plate-like portion 2a of the other workpiece 2. Then, it may be formed at a position corresponding to the burring portion 14 having the annular flange portion 13 provided on the overlapped plate-like portion 1a of one workpiece 1.

Next, a workpiece positioning structure according to a third embodiment of the present invention will be described with reference to FIG. In describing the workpiece positioning structure according to the third embodiment, only differences from the workpiece positioning structure according to the first embodiment will be described.
In the workpiece positioning structure according to the third embodiment of the present invention, the guide convex portion 27 is formed at the edge of the convex portion 8 of the overlapped plate-like portion 2a of the other workpiece 2. The guide protrusion 27 is formed at a position facing the other opening 21. The guide convex portion 27 is configured by projecting the entire superposed plate-like portion 2a in a cup shape. The guide convex portion 27 is formed in a semicircular shape in plan view, and its linear range is located on the edge of the overlapped plate-like portion 2a of the other workpiece 2. The guide convex portion 27 is formed to have a larger diameter than the fitting convex portion 10 provided on the superposed plate-like portion 1 a of one workpiece 1, and is formed to have a smaller diameter than the stopper convex portion 12.

  Further, in the workpiece positioning structure according to the third embodiment, the stopper convex portion 12 is the fitting convex portion 10 in the fitting convex portion 10 and the stopper convex portion 12 provided on the overlapped plate-like portion 1 a of one workpiece 1. It is formed with a larger diameter and a higher protruding height. In addition, although the one side opening part 11 is formed in a rectangular shape, the length of the long side is substantially the same as the outer diameter of the stopper convex part 12, and the length of the short side is the stopper convex part 12 and the fitting convex part 10. The distance between is approximately the same.

Next, the positioning method in the workpiece positioning structure according to the third embodiment will be described.
First, the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 are brought close to each other so as to abut against each other, and the other workpiece 2 is placed in the recess 5 provided in the overlapping plate-like portion 1a of one workpiece 1. The convex portions 8 provided in the superposed plate-like portion 2a are fitted and overlapped. As a result, a portion (inverted portion) is formed in which the plate alignment of the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 is inverted up and down with respect to the overlapping relationship of the reference surfaces 1b and 2b. The relative vertical positions of 1 and 2 are determined, and the relative positions of the workpieces 1 and 2 along the ends of the overlapped plate-like portions 1a and 2a are determined.
At the same time, the concave surface (spherical surface) of the guide convex portion 27 provided on the overlapping plate-like portion 2a of the other work 2 is the top surface of the fitting convex portion 10 provided on the overlapping plate-like portion 1a of the one workpiece 1 ( And an end portion including a guide convex portion 27 between the opening 21 on the other side and the edge of the overlapped plate-like portion 2a is provided on the overlapped plate-like portion 1a of the one workpiece 1. It fits in the one side opening part 11 between the fitting convex part 10 and the stopper convex part 12. At the same time, the fitting convex portion 10 provided on the overlapped plate-like portion 1 a of one work 1 is fitted into the other opening 21 provided on the overlapped plate-like portion 2 a of the other work 2. As a result, the relative positions of the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 (the direction perpendicular to the direction along the ends of the overlapping plate-like portions 1a and 2a) are determined. The relative horizontal position of the workpieces 1 and 2 is determined.

  And in 3rd Embodiment of this invention, in addition to the effect which concerns on 1st and 2nd embodiment, as shown in FIG. Even if the direction is slightly shifted when abutting and overlapping from the end, the concave surface of the guide convex portion 27 provided on the overlapping plate-like portion 2a of the other work 2 is formed on the overlapping plate-like portion 1a of the one workpiece 1. Since the guide is performed while correcting the direction to the normal direction by contacting the top surface of the provided fitting convex portion 10, the superposed plate-like portions 1a and 2a of the workpieces 1 and 2 are fitted in a normal state. It becomes possible. Moreover, the guide protrusion 27 provided on the overlap plate-like portion 2 a of the other work 2 has a larger diameter than the fitting protrusion 10 provided on the overlap plate-like portion 1 a of the one work 1 and a smaller diameter than the stopper protrusion 12. Therefore, the end portion including the guide convex portion 27 of the overlapping plate-like portion 2a of the other work 2 is formed between the fitting convex portion 10 and the stopper convex portion 12 of the overlapping plate-like portion 1a of the one workpiece 1. It can be made to fit in the one side opening part 11 between.

  1 Workpiece, 1a Superposed plate-shaped part (one work), 1b Reference surface, 2 The other work, 2a Superposed plate-like part (the other work), 2b Reference surface, 5 Recessed part (Reverse part of one work, 1st and 3rd embodiment), 6 convex part (inversion part of one work, 2nd embodiment), 7 recessed part (inversion part of the other work, 2nd embodiment), 8 convex part (of the other work) Inversion part, 1st and 3rd embodiment), 10 fitting convex part, 11 one side opening part (one side receiving part), 12 stopper convex part, 13 annular flange part, 14 burring processed part, 21 other side opening part (Other side receiving part, 1st and 3rd embodiment), 22 Other side opening part (Other side receiving part, 2nd Embodiment), 23 Guide part, 25 Inclined part, 27 Guide convex part

The present invention mainly relates to a positioning structure in which each superposed plate-like portion of two workpieces is overlapped and positioned so as to abut each other.

  Conventionally, various positioning structures and positioning methods for positioning and assembling two workpieces have been proposed. Therefore, as a positioning structure for positioning and assembling two workpieces without using a positioning jig, for example, in Patent Document 1, a thin plate-like protrusion formed on one sheet metal is formed on the other sheet metal. In the sheet metal positioning structure in which the bulging portions formed facing the inside of the opening sandwich the sheet metal in the thickness direction, the bulging portions abut one surface of the protruding portion. At least one one-side bulging portion and the other side which is bulged on both the left and right sides sandwiching the one-side bulging portion so as to face the one-side bulging portion and abuts against the other surface of the protruding portion A sheet metal positioning structure including a bulging portion is disclosed (claim 1).

  However, the positioning structure according to Patent Document 1 does not use a positioning jig, but does not have a sufficient fitting force, and the shape of the opening having a plurality of bulging portions formed on the other sheet metal is complicated. In addition, since the press mold yield strength decreases, press molding becomes impossible and it is difficult to employ.

JP 2008-116619 A

  As described above, in the positioning structure according to Patent Document 1, the fitting force between the two is not sufficient, and press molding is impossible and it is difficult to employ.

The present invention has been made in view of the above points, and provides a workpiece positioning structure capable of accurately positioning two workpieces with a sufficient fitting force without using a positioning jig or the like. For the purpose.

In order to solve the above-mentioned problems, the invention of claim 1 is a positioning structure for positioning each overlapping plate-like portion of two workpieces so as to abut each other from their end portions, and the overlapping plate of each workpiece The shape portion is provided with a reversal portion where the alignment of the overlapped plate-like portions of the workpieces is reversed upside down during the polymerization, and the overlapped plate-like portion of the one workpiece is disposed on the end side of the overlapped plate-like portion. and projecting toward the superposition side is a fitting protrusion top surface Ru is formed in a spherical shape, are disposed on the back side of the polymer plate portion continuous from the fitting convex portion, the polymerization time A first side receiving portion into which an end portion of the overlapped plate-like portion of the other workpiece is fitted, and the overlapped plate-like portion of the other workpiece is provided on the overlapped plate-like portion of the one workpiece during polymerization. The other side receiving part to which the fitting convex part fits , and the front edge of the overlapped plate-like part of the other work The entire overlapped plate-like portion is cup-shaped so that the bottom surface is spherical with a semicircular shape in plan view along the spherical top surface of the fitting convex portion provided on the overlapped plate-like portion of one workpiece. It is characterized by comprising a protruding guide protrusion .
In the invention of claim 1, the overlapped plate-like portions of each workpiece are brought close to each other so as to abut against each other and overlapped via an inversion portion, and at the same time, the end portion of the overlapped plate-like portion of the other workpiece Is fitted to one side receiving portion provided on the superposed plate-like portion of one work, and a fitting convex portion provided on the superposed plate-like portion of one work is provided on the superposed plate-like portion of the other work. The relative vertical and horizontal positions of each workpiece are determined by fitting the other receiving portion. In addition, the relative vertical and horizontal movement of each workpiece is mechanically restricted, so that the fitting force of each workpiece is sufficient.
In particular, when overlapping the overlapping plate-like portions of each workpiece from their end portions, the concave surface (spherical surface) of the guide convex portion provided on the overlapping plate-like portion of the other workpiece is formed on the overlapping plate-like portion of one workpiece. Since it moves while touching the top surface (spherical surface) of the provided fitting convex part, even if the overlapping direction is slightly deviated (relative horizontal deviation), the direction is corrected to the normal direction. It can guide, and it becomes possible to fit the superposition | polymerization plate-shaped part of each workpiece | work in a normal state.

The invention of claim 2 is a positioning structure in which the overlapping plate-like portions of the two workpieces are superposed and positioned so as to abut against each other from the end portions thereof. The workpiece plate has a reversal portion where the plate alignment of the overlapped plate-like portion is turned upside down, and the overlapped plate-like portion of the one workpiece has a burring portion having an annular flange portion protruding toward the overlapping side. The overlapping plate-like portion of the other workpiece includes a receiving portion on the other side into which the annular flange portion of the burring portion provided on the overlapping plate-like portion of the one workpiece is fitted during the polymerization . The annular flange portion of the burring portion provided on the overlap plate portion of the one workpiece is guided to the other side receiving portion provided on the overlap plate portion of the other workpiece at the edge of the overlap plate portion of the workpiece. And a guide unit Is formed in a D-shape in a plan view including an edge of the overlapped plate-like portion of the other workpiece, and is formed along a flat portion where the tip of the annular flange portion abuts, and a curved portion of the flat portion, It is characterized by being formed from an inclined portion inclined from the curved portion toward the overlapping side .
In the invention of claim 2, the overlapped plate-like portions of the workpieces are brought close to each other so as to abut each other through the reversal portion, and at the same time, provided on the overlapped plate-like portion of one workpiece. By fitting the annular flange portion of the burring portion to the other side receiving portion provided on the overlapped plate-like portion of the other workpiece, the relative vertical and horizontal positions of each workpiece are determined. In addition, the relative vertical and horizontal movement of each workpiece is mechanically restricted, so that the fitting force of each workpiece is sufficient.
In particular, when overlapping the overlapping plate-like portions of each workpiece from their end portions, the annular flange portion of the burring portion provided in the overlapping plate-like portion of one workpiece is provided in the overlapping plate-like portion of the other workpiece. In addition, since it moves along the flat portion and the inclined portion as the guide portion, even if the overlapping direction is slightly shifted (relative horizontal shift), the guide is performed while correcting the direction to the normal direction. It is possible to fit the overlapped plate-like portions of the workpieces in a normal state.

According to the present invention, it is possible to provide a workpiece positioning structure capable of accurately positioning two workpieces with a sufficient fitting force without using a positioning jig or the like.

FIG. 1 shows a workpiece positioning structure according to the first embodiment of the present invention, and (a) to (c) are diagrams showing stepwise until the overlapped plate-like portion of each workpiece is positioned. . FIG. 2 shows a workpiece positioning structure according to the second embodiment of the present invention, and (a) to (c) are diagrams showing stepwise until the overlapped plate-like portion of each workpiece is positioned. . FIG. 3 shows a workpiece positioning structure according to the third embodiment of the present invention, and (a) to (c) are diagrams showing stepwise until the overlapped plate-like portion of each workpiece is positioned. . FIG. 4 is a diagram illustrating how the direction of each workpiece is corrected when the overlapping direction of each workpiece is slightly shifted in the third embodiment.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to FIGS.
Hereinafter, the workpiece positioning structures according to the first to third embodiments of the present invention will be described. The workpiece positioning structures according to the second and third embodiments are described in the claims. Corresponding.
First, a workpiece positioning structure according to a first embodiment of the present invention will be described with reference to FIG. Each of the workpieces 1 and 2 in which the workpiece positioning structure is adopted in the first embodiment is a press-formed product. The workpieces 1 and 2 are respectively formed with superposed plate-like portions 1a and 2a that are positioned so as to overlap each other in the vicinity of their end portions. And in this positioning structure, it superimposes and positions each superposition | stacking plate-like part 1a, 2a of the two workpiece | works 1 and 2 so that it may mutually face | abut.

  Of the two workpieces 1 and 2, the overlapped plate-like portion 1 a of one of the workpieces 1 is provided with a recess 5 that is recessed from the reference surface 1 b of the overlapped plate-like portion 1 a at the end thereof. The recess 5 is formed by recessing the overlapped plate-like portion 1a of the work 1 as a whole. Moreover, this recessed part 5 is corresponded to the inversion site | part which reverses the board alignment of the superposition | polymerization plate-shaped parts 1a and 2a of each workpiece | work 1 and 2 up and down. The boundary between the recess 5 and the reference surface 1b is formed such that the end is recessed inward. Moreover, the fitting convex part 10 protruding toward the overlapping side is formed on the bottom surface of the concave part 5 of the overlapped plate-like part 1a of one workpiece 1. The fitting convex portion 10 is configured by projecting the entire superposed plate-like portion 1a in a cup shape. The fitting convex part 10 is provided in the edge part side of the superposition | polymerization plate-shaped part 1a. The fitting convex portion 10 is formed in a semicircular shape in a plan view in which the curved range faces the end side of the superposed plate-like portion 1a. A one-side opening 11 as a one-side receiving part is formed on the back side of the overlapped plate-like part 1 a continuously from the fitting convex part 10. The one-side opening 11 is configured to penetrate the overlapped plate-like portion 1a in the vertical direction. The one side opening 11 is formed in a rectangular shape in plan view. Further, a stopper convex portion 12 projects from the bottom surface of the concave portion 5 of the superposed plate-like portion 1a of one workpiece 1 continuously from the one-side opening 11 to the back side of the superposed plate-like portion 1a. The stopper convex portion 12 is configured by projecting the entire overlapping plate-shaped portion 1a in a cup shape in the same direction as the projecting direction of the fitting convex portion 10. The stopper convex portion 12 is formed in a semicircular shape in a plan view in which the curved range faces the back side of the superposed plate-like portion 1a. The fitting convex portion 10 and the stopper convex portion 12 are formed to have substantially the same outer diameter, and the protruding height is also formed to be substantially the same. In addition, although the one side opening part 11 is formed in a rectangular shape, the length of the long side is slightly larger than the outer diameter of the stopper convex part 12 or the fitting convex part 10, and the length of the short side is the stopper convex part. 12 substantially coincides with the distance between the fitting convex portion 10.

  Of the two workpieces, the overlapping plate-like portion 2a of the other workpiece 2 is provided with a convex portion 8 protruding from the reference surface 2b of the overlapping plate-like portion 2a at the end thereof. The convex portion 8 is formed by projecting the overlapping plate-like portion 2a of the work 2 as a whole. Further, the convex portion 8 corresponds to a reversal portion that reverses the plate alignment of the superposed plate-like portions 1a and 2a of the workpieces 1 and 2 up and down. The boundary between the convex portion 8 and the reference surface 2b is formed so that the end portion is recessed inward. Further, the convex portion 8 of the superposed plate-like portion 2a of the other work 2 is provided in the concave portion 5 of the superposed plate-like portion 1a of one work 1 when the superposed plate-like portions 1a and 2a of the respective works 1 and 2 are superposed. The other side opening 21 as the other side receiving part is formed at the position where the fitting convex part 10 is arranged. The other side opening 21 is configured to penetrate the overlapped plate-like portion 2a in the vertical direction. The other side opening 21 is formed in a bowl shape in a plan view in which the curved range faces the back side of the overlapped plate-like portion 2a. The other-side opening 21 is formed such that the opening width in the direction along the end of the overlapping plate-like portion 2a is slightly larger than the radius of the fitting convex portion 10 provided on the overlapping plate-like portion 1a of one workpiece 1. The In addition, in the superposed plate-like portion 2a of the other work 2, the end width between the other-side opening 21 and the end edge of the superposed plate-like portion 2a is the fit in the superposed plate-like portion 1a of the one work 1. This substantially coincides with the opening width of the one-side opening 11 between the joint protrusion 10 and the stopper protrusion 12. In addition, in the recessed part 5 of the superposition | polymerization plate-shaped part 1a of one workpiece | work 1, the length of the direction in alignment with the edge part of the superposition | polymerization plate-like part 1a, and the superposition | polymerization board in the convex part 8 of the superposition | polymerization plate-like part 2a of the other work 2 The length in the direction along the end of the shape portion 2a is substantially the same.

Next, a positioning method in the workpiece positioning structure according to the first embodiment will be described with reference to FIG.
First, the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 are brought close to each other so as to abut against each other, and the other workpiece 2 is placed in the recess 5 provided in the overlapping plate-like portion 1a of one workpiece 1. The convex portions 8 provided in the superposed plate-like portion 2a are fitted and overlapped. As a result, a part (inverted part) is formed in which the plate alignment of the superposed plate-like portions 1a, 2a of the workpieces 1, 2 is inverted up and down with respect to the superposition relationship of the reference surfaces 1b, 2b. The relative positions in the vertical direction are determined, and the relative positions of the workpieces 1 and 2 in the direction along the ends of the overlapped plate-like portions 1a and 2a are determined.
At the same time, the end portion between the other side opening 21 and the edge of the overlap plate portion 2a in the convex portion 8 of the overlap plate portion 2a of the other workpiece 2 is the overlap plate shape of the one workpiece 1. One side opening between the fitting convex portion 10 and the stopper convex portion 12 while moving while contacting the top surface of the fitting convex portion 10 provided in the concave portion 5 of the portion 1a and interfering with the stopper convex portion 12 11 is fitted. At this time, the end portion of the overlapped plate-like portion 2a of the other work 2 comes into contact with both of them so as to be sandwiched between the fitting convex portion 10 and the stopper convex portion 12 of the overlapped plate-like portion of the one workpiece 1. And are tightly fitted. Further, the fitting convex portion 10 provided in the concave portion 5 of the superposed plate-like portion 1a of one work 1 is fitted into the other side opening portion 21 provided in the convex portion 8 of the superposed plate-like portion 2a of the other work 2. Combined. As a result, the relative positions of the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 (the direction perpendicular to the direction along the ends of the overlapping plate-like portions 1a and 2a) are determined. The relative horizontal position of the workpieces 1 and 2 is determined.

  According to the first embodiment of the present invention described above, the overlapped plate-like portions 1a and 2a of the workpieces 1 and 2 are brought close to each other so as to abut against each other, and the overlapped plate-like shape of one workpiece 1 is obtained. The concave portion 5 provided in the portion 1a is overlapped with the convex portion 8 provided in the superposed plate-like portion 2a of the other work 2 so as to be fitted to each other, and at the same time, the superposed plate-like portion 2a of the other work 2 The end portion is fitted in the one side opening 11 between the fitting convex portion 10 and the stopper convex portion 12 provided on the superposed plate-like portion 1a of one work 1, and the superposed plate of one work 1 The fitting convex part 10 provided in the shaped part 1a is fitted in the other side opening part 21 provided in the overlapping plate-like part 2a of the other work 2, so that the relative vertical direction of each work 1 and 2 is achieved. And a horizontal position is determined. Thus, the workpieces 1 and 2 can be accurately positioned without using a positioning jig.

  In addition, according to the first embodiment of the present invention, since the relative vertical and horizontal positioning of the workpieces 1 and 2 is mechanically constructed, the fitting force of the workpieces 1 and 2 is sufficient. Become. As a result, the workpieces 1 and 2 can be positioned and transported in a temporarily assembled state, and the workpieces 1 and 2 can be positioned by the operator in any process. As a result, the degree of freedom of work classification and process layout increases.

  Furthermore, in the first embodiment of the present invention, when the overlapped plate-like portions 1a and 2a of the workpieces 1 and 2 are overlapped, the end portion of the overlapped plate-like portion 2a of the other workpiece 2 is the one of the workpieces 1. The fitting projection provided in the overlapping plate-like portion 1a of one workpiece 1 while fitting into the one-side opening 11 between the fitting protruding portion 10 and the stopper protruding portion 12 provided in the overlapping plate-like portion 1a. The operator confirms the completion of positioning of the workpieces 1 and 2 by the fitting sound when the portion 10 is fitted into the other side opening 21 provided on the overlapped plate-like portion 2a of the other workpiece 2. Workability is improved.

  Furthermore, according to the first embodiment of the present invention, the dedicated holding jig for holding the sub-assembly composed of a plurality of workpieces positioned as described above, such as when assembling the positioned workpieces 1 and 2 by welding. Therefore, the configuration can be made much simpler than a dedicated holding jig for holding each of a plurality of workpieces as in the prior art. Furthermore, in the first embodiment of the present invention, a plurality of stationary welders are arranged at intervals on the welding line, and the operator positions, for example, the first workpiece and the second workpiece described above. A sub-assembly is formed by positioning by the method, a predetermined position of the work sub-assembled by the first stationary welding machine is welded, and then the third work is positioned on the work welded by the operator as described above. Positioning by the method, it becomes possible to weld a predetermined position of the workpiece further sub-assembled by the next stationary welding machine. Since a series of these welding operations can be performed without using a large-scale dedicated jig or the like, it is possible to easily cope with fluctuations in the number of production units, thereby reducing investment in production facilities.

  In addition, in 1st Embodiment, the recessed part 5 which has the fitting convex part 10, the one side opening part 11, and the stopper convex part 12 in the superposition | polymerization plate-shaped part 1a, 2a of each workpiece | work 1, 2, and the other side opening part. Although the convex part 8 which has 21 is each provided in one place, you may form in multiple places. Moreover, in 1st Embodiment, the fitting convex part 10, the one side opening part 11, and the stopper convex part 12 are provided in the recessed part 5 of the overlapping plate-shaped part 1a of one workpiece | work 1, and the overlapping plate shape of the other workpiece | work 2 is provided. The other side opening 21 is provided on the convex part 8 of the part 2a, but the fitting convex part 10, the one side opening part 11 and the stopper convex part 12 are provided on the convex part 8 of the overlapping plate-like part 2a of the other work 2. The other-side opening 21 may be provided in the concave portion 5 of the superposed plate-like portion 1a of one workpiece 1.

  Furthermore, in 1st Embodiment, the fitting convex part 10, the one side opening part 11, and the stopper convex part 12 are formed in the range of the recessed part 5 of the superposition | stacking plate-shaped part 1a of one workpiece | work 1, and the other workpiece | work 2 is formed. The other-side opening 21 is formed within the range of the convex portion 8 of the superposed plate-like portion 2a, but the fitting convex portion 10, the one-side opening portion 11 and the stopper convex portion 12 are used as the superposed plate of one workpiece 1. It is not necessary to provide in the range of the recessed part 5 of the shape part 1a, and you may form in the other location (reference surface 1b) of the superposition | polymerization plate-shaped part 1a of one workpiece | work 1. FIG. Further, it is not necessary to provide the other-side opening 21 within the range of the convex portion 8 of the overlapped plate-like portion 2a of the other work 2, and other portions (reference surface 2b) of the overlapped plate-like portion 2a of the other work 2 Therefore, it may be formed at a position corresponding to the fitting convex portion 10, the one side opening portion 11, and the stopper convex portion 12 provided on the overlapped plate-like portion 1 a of one workpiece 1.

Next, a workpiece positioning structure according to a second embodiment of the present invention will be described with reference to FIG. In describing the workpiece positioning structure according to the second embodiment, only the differences from the workpiece positioning structure according to the first embodiment will be described.
A burring portion 14 having an annular flange portion 13 projecting toward the overlapping side is provided on the lower surface of the convex portion 6 projecting from the reference surface 1b of the overlapped plate-like portion 1a of one workpiece 1. .
A burring portion 14 provided on the convex portion 6 of the superposed plate-like portion 1a of one work 1 is provided in the concave portion 7 that is recessed with respect to the reference surface 2b of the superposed plate-like portion 2a of the other work 2. The other-side opening 22 as the other-side receiving portion is provided at a position where is disposed. The inner diameter of the opening 22 on the other side substantially matches the outer diameter of the annular flange portion 13 of the burring portion 14. In addition, an annular flange portion 13 of a burring portion 14 provided on the overlap plate-like portion 1 a of one work 1 is connected to an end edge of the concave portion 7 of the overlap plate-like portion 2 a of the other work 2. A guide portion 23 is formed to guide the other side opening portion 22 provided in the overlapping plate-like portion 2a. The guide part 23 is connected to an inclined part 25 extending from the end of the concave part 7 of the overlapping plate-like part 2 a of the other work 2 in an opposite direction to the overlapping side, and to the tip of the inclined part 25. And a plane portion 24. The flat surface portion 24 is a position where the tip of the annular flange portion 13 of the burring portion 14 provided on the overlapping plate-like portion 1a of one workpiece 1 abuts when the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 are overlapped. It is provided at a position where it does not interfere with the tip. The plane part 24 is formed in a D-shape in plan view including the linear edge of the superposed plate-like part 2a. The inclined portion 25 is formed along the curved portion of the planar portion 24 in plan view, and is formed so as to connect the curved portion of the planar portion 24 and the bottom surface of the concave portion 7. In addition, the formation range along the edge part of the superposition | polymerization plate-shaped part 2a of the inclination part 25 is set larger than the outer diameter of the other side opening part 22 provided in the superposition | polymerization plate-like part 2a of the other workpiece | work 2. In addition, in the convex part 6 of the superposition | polymerization plate-shaped part 1a of one workpiece | work 1, the length of the direction along the edge part of the superposition | polymerization plate-like part 1a, and the superposition | polymerization board in the recessed part 7 of the superposition | polymerization plate-like part 2a of the other workpiece | work 2 The length in the direction along the end of the shape portion 2a is substantially the same.

Next, the positioning method in the workpiece positioning structure according to the second embodiment will be described.
First, the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 are brought close to each other so as to abut against each other, and the other workpiece is placed on the convex portion 6 provided on the overlapping plate-like portion 1a of one workpiece 1. The concave portions 7 provided in the two superposed plate-like portions 2a are fitted and overlapped. As a result, a portion (inverted portion) is formed in which the plate alignment of the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 is inverted up and down with respect to the overlapping relationship of the reference surfaces 1b and 2b. The relative vertical positions of 1 and 2 are determined, and the relative positions of the workpieces 1 and 2 along the ends of the overlapped plate-like portions 1a and 2a are determined.
At the same time, the annular flange portion 13 of the burring portion 14 provided on the overlapped plate-like portion 1a of one workpiece 1 is along the plane portion 24 and the inclined portion 25 provided on the overlapped plate-like portion 2a of the other workpiece 2. Thus, the bottom surface of the recess 7 is reached, and finally the annular flange portion 13 is tightly fitted into the other side opening 22. As a result, the relative horizontal positions of the workpieces 1 and 2 are determined.
And also in the 2nd Embodiment of this invention, there can exist an effect similar to 1st Embodiment.

  In the second embodiment, the burring portion 14 having the annular flange portion 13 is provided on the convex portion 6 of the superposed plate-like portion 1a of one work 1, and the concave portion 7 of the superposed plate-like portion 2a of the other work 2 is provided. The other side opening 22 and the guide part 23 are provided on the other side. However, the other side opening 22 and the guide part 23 are provided on the convex part 6 of the overlapping plate-like part 1 a of one work 1, and the overlapping plate shape of the other work 2 is provided. You may provide the burring process part 14 which has the annular flange part 13 in the recessed part 7 of the part 2a.

  Furthermore, in 2nd Embodiment, the burring process part 14 which has the annular flange part 13 in the range of the convex part 6 of the superposition | polymerization plate-like part 1a of one workpiece | work 1 is formed, and the superposition | polymerization plate-like part of the other workpiece | work 2 The opening 22 on the other side is formed in the range of the concave portion 7a of 2a, but the burring portion 14 having the annular flange portion 13 is provided in the range of the convex portion 6 of the superposed plate-like portion 1a of one workpiece 1. It is not necessary, and it may be formed at another location (reference surface 1b) of the superposed plate-like portion 1a of one workpiece 1. Further, it is not necessary to provide the other-side opening 22 in the range of the concave portion 7 of the overlapped plate-like portion 2a of the other workpiece 2, and the other opening 2 is provided at another location (reference surface 2b) of the overlapped plate-like portion 2a of the other workpiece 2. Then, it may be formed at a position corresponding to the burring portion 14 having the annular flange portion 13 provided on the overlapped plate-like portion 1a of one workpiece 1.

Next, a workpiece positioning structure according to a third embodiment of the present invention will be described with reference to FIG. In describing the workpiece positioning structure according to the third embodiment, only differences from the workpiece positioning structure according to the first embodiment will be described.
In the workpiece positioning structure according to the third embodiment of the present invention, the guide convex portion 27 is formed at the edge of the convex portion 8 of the overlapped plate-like portion 2a of the other workpiece 2. The guide protrusion 27 is formed at a position facing the other opening 21. The guide convex portion 27 is configured by projecting the entire superposed plate-like portion 2a in a cup shape. The guide convex portion 27 is formed in a semicircular shape in plan view, and its linear range is located on the edge of the overlapped plate-like portion 2a of the other workpiece 2. The guide convex portion 27 is formed to have a larger diameter than the fitting convex portion 10 provided on the superposed plate-like portion 1 a of one workpiece 1, and is formed to have a smaller diameter than the stopper convex portion 12.

  Further, in the workpiece positioning structure according to the third embodiment, the stopper convex portion 12 is the fitting convex portion 10 in the fitting convex portion 10 and the stopper convex portion 12 provided on the overlapped plate-like portion 1 a of one workpiece 1. It is formed with a larger diameter and a higher protruding height. In addition, although the one side opening part 11 is formed in a rectangular shape, the length of the long side is substantially the same as the outer diameter of the stopper convex part 12, and the length of the short side is the stopper convex part 12 and the fitting convex part 10. The distance between is approximately the same.

Next, the positioning method in the workpiece positioning structure according to the third embodiment will be described.
First, the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 are brought close to each other so as to abut against each other, and the other workpiece 2 is placed in the recess 5 provided in the overlapping plate-like portion 1a of one workpiece 1. The convex portions 8 provided in the superposed plate-like portion 2a are fitted and overlapped. As a result, a portion (inverted portion) is formed in which the plate alignment of the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 is inverted up and down with respect to the overlapping relationship of the reference surfaces 1b and 2b. The relative vertical positions of 1 and 2 are determined, and the relative positions of the workpieces 1 and 2 along the ends of the overlapped plate-like portions 1a and 2a are determined.
At the same time, the concave surface (spherical surface) of the guide convex portion 27 provided on the overlapping plate-like portion 2a of the other work 2 is the top surface of the fitting convex portion 10 provided on the overlapping plate-like portion 1a of the one workpiece 1 ( And an end portion including a guide convex portion 27 between the opening 21 on the other side and the edge of the overlapped plate-like portion 2a is provided on the overlapped plate-like portion 1a of the one workpiece 1. It fits in the one side opening part 11 between the fitting convex part 10 and the stopper convex part 12. At the same time, the fitting convex portion 10 provided on the overlapped plate-like portion 1 a of one work 1 is fitted into the other opening 21 provided on the overlapped plate-like portion 2 a of the other work 2. As a result, the relative positions of the overlapping plate-like portions 1a and 2a of the workpieces 1 and 2 (the direction perpendicular to the direction along the ends of the overlapping plate-like portions 1a and 2a) are determined. The relative horizontal position of the workpieces 1 and 2 is determined.

  And in 3rd Embodiment of this invention, in addition to the effect which concerns on 1st and 2nd embodiment, as shown in FIG. Even if the direction is slightly shifted when abutting and overlapping from the end, the concave surface of the guide convex portion 27 provided on the overlapping plate-like portion 2a of the other work 2 is formed on the overlapping plate-like portion 1a of the one workpiece 1. Since the guide is performed while correcting the direction to the normal direction by contacting the top surface of the provided fitting convex portion 10, the superposed plate-like portions 1a and 2a of the workpieces 1 and 2 are fitted in a normal state. It becomes possible. Moreover, the guide protrusion 27 provided on the overlap plate-like portion 2 a of the other work 2 has a larger diameter than the fitting protrusion 10 provided on the overlap plate-like portion 1 a of the one work 1 and a smaller diameter than the stopper protrusion 12. Therefore, the end portion including the guide convex portion 27 of the overlapping plate-like portion 2a of the other work 2 is formed between the fitting convex portion 10 and the stopper convex portion 12 of the overlapping plate-like portion 1a of the one workpiece 1. It can be made to fit in the one side opening part 11 between.

  1 Workpiece, 1a Superposed plate-shaped part (one work), 1b Reference surface, 2 The other work, 2a Superposed plate-like part (the other work), 2b Reference surface, 5 Recessed part (Reverse part of one work, 1st and 3rd embodiment), 6 convex part (inversion part of one work, 2nd embodiment), 7 recessed part (inversion part of the other work, 2nd embodiment), 8 convex part (of the other work) Inversion part, 1st and 3rd embodiment), 10 fitting convex part, 11 one side opening part (one side receiving part), 12 stopper convex part, 13 annular flange part, 14 burring processed part, 21 other side opening part (Other side receiving part, 1st and 3rd embodiment), 22 Other side opening part (Other side receiving part, 2nd Embodiment), 23 Guide part, 25 Inclined part, 27 Guide convex part

Claims (9)

A positioning structure that positions each overlapping plate-like portion of two workpieces so as to abut against each other from their ends,
The superposed plate-like portion of each work is provided with a reversal portion where the plate alignment of the superposed plate-like portions of each work is turned upside down during the polymerization,
The superposed plate-like portion of the one workpiece includes a fitting convex portion arranged on the end side of the superposed plate-like portion and projecting toward the overlapping side, and the superposed plate continuously from the fitting convex portion. Arranged on the back side of the shaped part, and at the time of superposition, provided with one side receiving part into which the end part of the superposed plate-like part of the other workpiece is fitted,
The workpiece positioning structure, wherein the overlapping plate-like portion of the other workpiece includes a receiving portion on the other side into which the fitting convex portion provided on the overlapping plate-like portion of the one workpiece is fitted at the time of polymerization. .   The superposed plate-like portion of the one workpiece includes a stopper convex portion that is continuously disposed from the one-side receiving portion and is disposed on the back side of the superposed plate-like portion and protrudes toward the overlapping side. The workpiece positioning structure according to claim 1.   At the edge of the overlapped plate-like portion of the other workpiece, the entire overlapped plate-like portion was projected in a cup shape along the top surface of the fitting convex portion provided on the overlapped plate-like portion of the one workpiece. The workpiece positioning structure according to claim 1, further comprising a guide convex portion.   The workpiece positioning structure according to claim 3, wherein an end portion of the overlapped plate-like portion of the other workpiece fitted to the one-side receiving portion includes the guide convex portion. A positioning structure that positions each overlapping plate-like portion of two workpieces so as to abut against each other from their ends,
The superposed plate-like portion of each work is provided with a reversal portion where the plate alignment of the superposed plate-like portions of each work is turned upside down during the polymerization,
The overlapped plate-like portion of the one workpiece includes a burring portion having an annular flange portion protruding toward the overlapping side,
The overlapped plate-like portion of the other workpiece includes a receiving portion on the other side to which an annular flange portion of the burring portion provided on the overlapped plate-like portion of the one workpiece is fitted during polymerization. Work positioning structure.   An annular flange portion of a burring portion provided on the overlap plate portion of the one workpiece is provided at the edge of the overlap plate portion of the other workpiece, and the other side receiving portion provided on the overlap plate portion of the other workpiece. The workpiece positioning structure according to claim 5, wherein a guide portion for guiding the workpiece is formed.   The workpiece positioning structure according to claim 1, wherein the workpiece is a press-formed product. It is a positioning method for positioning each overlapping plate-like part of two workpieces so as to abut against each other from their ends,
The superposed plate-like portion of each work has a reversal site where the alignment of the superposed plate-like portions of each work is turned upside down during the polymerization,
The overlapping plate-like portions of the respective workpieces are brought close to each other so as to abut against each other and overlapped via the inversion portion, and at the same time, the end portion of the overlapping plate-like portion of the other workpiece is placed on the one workpiece. The fitting convex part provided in the superposition plate-like part of the one workpiece is fitted to the one-side receiving part provided in the superposition plate-like part, and the other side reception provided in the superposition plate-like part of the other work A workpiece positioning method, wherein the workpiece is fitted to a part. It is a positioning method for positioning each overlapping plate-like part of two workpieces so as to abut against each other from their ends,
The superposed plate-like portion of each work has a reversal site where the alignment of the superposed plate-like portions of each work is turned upside down during the polymerization,
At the same time, the overlapping plate-like portions of the workpieces are brought close to each other so as to abut against each other and overlap each other via the reversal portion, and at the same time, the annular flange portion of the burring portion provided on the overlapping plate-like portion of the one workpiece Is fitted to the other side receiving portion provided on the overlapped plate-like portion of the other workpiece.

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