JP2019138045A - Alignment jig - Google Patents

Abstract

To provide an alignment jig which can, for example, perform alignment of holes of a heavy steel frame safely and easily.SOLUTION: A jig for aligning round holes of two work-pieces includes: a head part in such a shape as can be held by a power tool; a cylindrical trunk part which is integral with the head part, which has an outer diameter the same as an inner diameter of a round hole to be aligned, which is inserted in the round hole of one work-pieces, and which is inserted into the round holes of the two work-pieces when the round holes of the two work-pieces are aligned; and a guide part which is provided at a tip of the trunk part in a protrusive manner, which has a circular arc-shaped surface continuing to an outer peripheral surface of the trunk part, which is inserted in the round hole of the other work-piece when the trunk part is inserted in the round hole of the one work-pieces, which moves the round hole of the other work-piece by being slid with a round hole inner edge of the other work-piece by the trunk part being rotated in the round hole of the one work-pieces, and which guides the round hole of the other work-pieces in the direction aligned with the round hole of the one work-pieces.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an alignment jig, for example, a positioning jig that can safely and easily align a hole in a heavy steel frame.

  For example, when assembling a steel frame at a construction site, in order to shorten the work time, a splice for connection is temporarily fixed at both ends of the steel frame before entering the assembly work, and it is often carried into the construction site in that state (patents) Reference 1).

  Such a steel frame is typified by H-shaped steel, but when assembling the H-shaped steel, as shown in FIG. 4A, the H-shaped steel 30 with the splices 31A and 31B temporarily fixed is suspended by a crane 33, as shown in FIG. ), For example, the holes of the splices 31A and 31B and the bolt holes of the H-section steel 30 are aligned by hand using a bar 34 palm.

  On the other hand, in the heavy steel frame, if the hole is to be aligned manually by the bar 34, the steel frame is heavy, so that it is difficult to align the hole, and the hole is aligned by driving a hard approach punch with a hammer. Has been done.

Japanese Patent Application Laid-Open No. 07-82895

  However, there is a problem that it is dangerous to perform an alignment operation using a hard punch and a hammer at a high place.

  In view of such problems, an object of the present invention is to provide a positioning jig capable of safely and simply aligning a hole in a heavy steel frame, for example.

  Therefore, the alignment jig according to the present invention is a jig for aligning the round holes of two workpieces, and has a head having a shape that can be gripped by a power tool, and is integrated with the head. , Which has the same outer diameter as the inner diameter of the round hole to be aligned, is inserted into the round hole of one workpiece, and is inserted into the round hole of the two workpieces when the two workpieces are aligned. A cylindrical body portion that protrudes from the tip of the body portion and has an arcuate surface that is continuous with the outer peripheral surface of the body portion, and the body portion is inserted into a round hole of one workpiece. It is inserted into the round hole of the other workpiece, and the barrel is rotated in the round hole of the one workpiece, so that it slides on the inner edge of the other workpiece and moves the round hole of the other workpiece. Guide part that guides the round hole of the other workpiece in the direction aligned with the round hole of one workpiece , Characterized by comprising a.

  One of the features of the present invention is that the barrel portion of the alignment jig is inserted into the round hole of the workpiece, and is inserted into the round hole of the other workpiece of the guide portion, and the barrel portion is rotated using a power tool such as a power wrench. By this, the guide part is in the point that the inner edge of the round hole of the other workpiece is pushed and moved in the direction of aligning the two round holes.

  As a result, the round holes of the two workpieces can be aligned manually. For example, heavy steel frames can be assembled safely and in a short time, and the safety in high-altitude work can be greatly improved.

  The shape of the guide portion is not particularly limited as long as it has an arcuate surface continuous with the outer peripheral surface of the body portion, and a three-dimensional shape as shown in the following embodiment can be adopted.

It is a figure which shows preferable embodiment of the alignment jig | tool which concerns on this invention. It is a figure which shows 2nd Embodiment. It is a figure which shows 3rd Embodiment. It is a figure which shows typically the joining operation of H-section steel. It is a figure which shows a position alignment operation | work typically. It is a figure which shows typically other alignment work.

  Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. FIG. 1 shows a preferred embodiment of an alignment jig according to the present invention. In the figure, the alignment jig 10 is composed of a head 11, a body 12, and a guide 13A. The head 11 has a hexagonal shape that can be gripped by a power wrench (not shown), and the body 12 is a head. 11 is manufactured in a cylindrical shape having the same outer diameter as the inner diameter of the round holes 20A and 21A to be aligned. This body portion 12 is inserted into the circle 20A of one workpiece 20, and when the round holes 20A, 21A of the two workpieces 20, 21 are aligned, they are inserted into the round holes 20A, 21A of the two workpieces 20, 21. It has become so.

  The guide portion 13 </ b> A protrudes from the tip of the trunk portion 12 and has an arcuate surface that is continuous with the outer peripheral surface of the trunk portion 12. The guide portion 13 </ b> A is inserted into the round hole 21 </ b> A of the other workpiece 21 when the barrel portion 12 is inserted into the round hole 20 </ b> A of the one workpiece 20, and the barrel portion 12 is inserted into the round hole 20 </ b> A of the one workpiece 20. Is rotated to move the round hole 21A of the other workpiece 21 in sliding contact with the inner edge of the round hole 21A of the other workpiece 21, and the round hole 21A of the other workpiece 21 is moved to the round hole of the one workpiece 20. Guidance is made in the direction of alignment with 20A.

  As shown in FIG. 5A, when the positions of the round holes 20A and 21A of the two workpieces 20 and 21 are shifted, the round holes to be aligned as shown in FIG. 5B. The guide part 13A and the body part 12 of the alignment jig 10 are inserted into the round hole 20A of the upper (one) work 20 at 20A and 21A, and the guide part 13A is inserted into the round hole 21A of the lower (other) work 21. Plug in.

  Next, when the head 11 of the alignment jig 10 is gripped by a power wrench and the head 11 is rotated as shown in FIG. 5C, the head 11 rotates within the round hole 20A of the upper workpiece 20. Then, the guide part 13A pushes the inner edge of the round hole 21A of the lower work 21, and guides the round hole 21A of the lower work 21 in a direction to align with the round hole 20A of one work 20, thereby lowering the lower work. 21 is rotated around the splice temporary fixing bolt (bolt for temporarily fixing the splice), so that all the round holes 20A and 21A can be aligned as shown in FIG. 5C. The

  On the other hand, when the positions of the upper and lower round holes 20A and 21A are greatly shifted, one round hole 20A and 21A are aligned in the same manner as described above, and the aligned round holes as shown in FIG. When the positioning pin 25 is inserted into 20A and 21A and the alignment jig 10 is inserted into the other round holes 20A and 21A in that state and the alignment operation is performed, the workpieces 20 and 21 move relative to each other with the positioning pin 25 as a reference. Therefore, the upper and lower round holes 20A and 21A can be aligned with each other as in the case of FIG.

  2 and 3 show another embodiment. If the guide portions 13B and 13C have an arcuate surface that is continuous with the outer peripheral surface of the body portion 12, another solid body as shown in FIG. 2 and FIG. It can also be a shape.

10 Positioning jig 11 Head 12 Body 13A, 13B, 13C Guide part 20, 21 Workpiece 20A, 21A Round hole

Claims (1)

A jig for aligning the round holes of two workpieces,
A head (11) having a shape that can be gripped by the power tool;
It is integral with the head (11), has the same outer diameter as the inner diameter of the round holes (20A, 21A) to be aligned, and is inserted into the round hole (20A) of one workpiece (20). When the round holes (20A, 21A) of the two works (20, 21) are aligned, the cylindrical body (12) inserted into the round holes (20A, 21A) of the two works (20, 21) When,
The body (12) has a circular arc surface (20A) projecting from the tip of the body (12) and having an arcuate surface continuous to the outer peripheral surface of the body (12). ) Is inserted into the round hole (21A) of the other work (21), and the body (12) is rotated in the round hole (20A) of the one work (20). Is slidably contacted with the inner edge of the round hole (21A) of the other work (21) to move the round hole (21A) of the other work (21), and the round hole (21A) of the other work (21) is moved to one side. And a guide portion (13A, 13B, 13C) for guiding the workpiece (20) in a direction aligned with the round hole (20A) of the workpiece (20).

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