KR20200129422A - An apparatus for centering a hole of plate - Google Patents

Abstract

The present invention provides a variable hole fixing device, which comprises: a case portion in which the inside is in the form of a hollow cylinder, and which has a coupling hole formed on one side, and a plurality of guide openings formed at regular intervals around the outer circumferential surface thereof; a rod-shaped screw member disposed in the center of the case portion and rotatably coupled to the coupling hole; a plurality of alignment pieces arranged radially around the screw member and provided to be movable in the outer or inner direction of the case portion through the plurality of guide openings; and an operation member which is coupled on a shaft of the screw member, moves up and down according to the rotation of the screw member, and moves the plurality of alignment pieces in the outer or inner direction of the case portion.

Description

Variable hole fixing device{AN APPARATUS FOR CENTERING A HOLE OF PLATE}

The present invention relates to a variable hole fixing device.

In general, in the process of manufacturing a support body having holes such as lugs, a plurality of plate bodies having holes of the same diameter are overlapped and welded to produce a support body such as a lug. After aligning and matching the holes, fix them and then weld them.

Conventionally, after overlapping a plurality of plate bodies having holes formed thereon, an operator manually aligns the plate bodies to match the holes, and then welding is performed.

However, when the operator manually aligns and welds the holes between the plate bodies, the holes do not match accurately, and there is a problem in that the holes between the plate bodies must be processed by additional machining.

Therefore, in the lug manufacturing process, a separate machining process for hole processing is required, resulting in a problem of lowering work efficiency and increasing cost.

In the present invention, a variable hole fixing device, specifically, when welding after overlapping a plurality of plate bodies with holes formed thereon, allows the operator to easily insert into the hole to accurately match and align the holes of the overlapped plate bodies. , By firmly fixing the overlapped plate bodies, it is intended to provide a variable hole fixing device capable of performing plate body welding by accurately matching the holes between the plate bodies.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems that are not mentioned will be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. I will be able to.

In order to solve the above-described problems, the present invention is a case portion in which a plurality of guide openings are formed at regular intervals around an outer circumferential surface in a hollow cylindrical shape, a coupling hole formed on one side, and a center in the case portion. A rod-shaped screw member that is arranged and rotatably coupled to the coupling hole, a plurality of alignment pieces and screws that are radially arranged around the screw member and provided to be movable in the outer or inward direction of the case portion through a plurality of guide openings It is coupled on the shaft of the member, it elevates according to the rotation of the screw member and provides a variable hole fixing device including an operation member for moving a plurality of alignment pieces in the outer or inner direction of the case.

In addition, the plurality of alignment pieces has a rear end facing the screw member formed as an inclined surface, and the operation member supports the inclined surfaces formed on the plurality of alignment pieces, and lifts and descends according to the rotation of the screw member and pressurizes or releases the inclined surface. It provides a variable hole fixing device for moving the alignment piece in the outer or inner direction of the case portion.

In addition, the operation member provides a variable hole fixing device in which a plurality of guide grooves are formed around the outer circumferential surface and into which the rear end of the alignment piece having an inclined surface is inserted.

In addition, it provides a variable hole fixing device further comprising at least one or more auxiliary alignment pieces detachably coupled to the front end of the alignment piece.

In addition, it further includes an auxiliary guide member provided inside the case portion to assist the movement of the plurality of alignment pieces, the auxiliary guide member is coupled to the fixing member and the fixing member fixed to the inner surface of the case portion, the screw member and the operating member It provides a variable hole fixing device including a guide cover formed so as to be wrapped, a plurality of auxiliary guide openings to assist the movement of the plurality of alignment pieces are formed on the outer circumferential surface.

In the variable hole fixing device according to an embodiment of the present invention, when welding after overlapping a plurality of plate bodies having holes formed thereon to manufacture a lug, etc., the operator simply inserts it into the hole and turns the handle. As a plurality of alignment pieces are radially expanded, the holes formed in the plate body are aligned, and the plate body in which the holes are aligned is firmly fixed, so that the plate body welding work can be performed by accurately matching the holes between the plate bodies, resulting in operational convenience and work efficiency. It can be effectively improved.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those of ordinary skill in the art from the following description. will be.

1 is a diagram showing the overall configuration of a variable hole fixing device according to a first embodiment of the present invention.
2 is a view showing the combined state of the variable hole fixing device according to the first embodiment of the present invention.
3 is a cross-sectional view showing the internal structure of the variable hole fixing device according to the first embodiment of the present invention.
Figure 4 shows a structure in which the auxiliary alignment piece is coupled to the alignment piece according to the first embodiment of the present invention.
5 shows a state of use of the variable hole fixing device according to the first embodiment of the present invention.
6 shows a configuration of a variable hole fixing device according to a second embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The detailed description to be disclosed hereinafter together with the accompanying drawings is intended to describe exemplary embodiments of the present invention, and is not intended to represent the only embodiments in which the present invention may be practiced.

In the drawings, parts irrelevant to the description may be omitted in order to clearly describe the present invention, and the same reference numerals may be used for the same or similar components throughout the specification.

In an embodiment of the present invention, expressions such as “or” and “at least one” may represent one of words listed together, or a combination of two or more.

FIG. 1 is a diagram showing the overall configuration of a variable hole fixing device 100 according to a first embodiment of the present invention, and FIG. 2 is a combination of a variable hole fixing device 100 according to the first embodiment of the present invention. 3 is a cross-sectional view showing the internal structure of the variable hole fixing device 100 according to the first embodiment of the present invention.

Prior to the description, the variable hole fixing device 100 according to an embodiment of the present invention is a device used to align and fix holes between plate bodies when welding after overlapping a plurality of plate bodies having holes formed thereon.

1 to 3, the variable hole fixing device 100 according to the first embodiment of the present invention includes a case portion 110, a screw member 120, a plurality of alignment pieces 130, a band member ( 140) and an operation member 150 may be included.

The case portion 110 is formed in a hollow cylindrical shape, constituting the exterior of the variable hole fixing device 100, a coupling hole 111 to which the screw member 120 is coupled is formed on one side, and the other side It is open, and a plurality of guide openings 112 may be formed around the outer circumferential surface at regular intervals.

Here, the case part 110 may have an outer peripheral surface formed in a cylindrical shape so that it can be easily inserted into a hole of the plate body for alignment.

In addition, the guide opening 112 formed around the outer circumferential surface of the case portion 110 may be formed as a long opening corresponding to the length and width of the alignment piece 130 to be described later.

The screw member 120 is in the form of a rod having a screw formed on the outer circumferential surface thereof, and is disposed at the center of the inner side of the case unit 110 and has one end rotatably coupled to the coupling hole 111 of the case unit 110.

At this time, since the bearing (B) is provided in the coupling hole 111 of the case portion 110, the screw member 120 may be rotatably coupled to the coupling hole 111 by the bearing (B).

In addition, a handle 121 capable of being held and rotated by an operator may be provided at one end of the screw member 120.

At this time, the handle 121 may be integrally provided at one end of the screw member 120 or may be detachably provided, and may be disposed to protrude to the outside of the case part 110 so that an operator can grip it.

Accordingly, when the operator turns the handle 121, the screw member 120 coupled to the case unit 110 may be rotated.

In addition, as another example, by forming a tool fastening groove (not shown) at one end of the screw member 120, instead of the handle 121, a tool such as an electric drill is fastened to the tool fastening groove (not shown) to the screw member 120 ) Can also be rotated.

The alignment pieces 130 are provided in plural and radially disposed around the screw member 120, and are guide-coupled to the guide opening 112 formed in the case portion 110 so as to be slidably movable, so that the guide opening 112 Through the case portion 110 may be provided to be movable in the outer or inner direction.

Here, the alignment piece 130 is a configuration for aligning the holes by pressing the inner surfaces of the overlapping plate body holes when aligning the holes between the plate bodies using the variable hole fixing device 100 of the present embodiment, and aligning the plate body holes with respect to the circumferential direction. It is formed in a predetermined length so as to be vertically disposed and provided in the case portion 110, and a front end portion for pressing the inner surface of the plate body hole may be formed in a linear shape.

In addition, the guide opening 112 formed on the outer circumferential surface of the case portion 110 may be formed as a long opening corresponding to the length of the alignment piece 130.

In addition, the rear end of the alignment piece 130 toward the screw member 120 may be formed as an inclined surface 131 inclined in one direction.

That is, in this embodiment, it is shown that each alignment piece 130 is formed in a trapezoidal shape in which one side is inclined, and an inclined surface 131 is formed on the side facing the screw member 120.

At this time, the inclined surface 131 formed on each of the alignment pieces 130 may be supported by the operation member 150 coupled to the screw member 120, and a detailed description thereof will be described later.

The band member 140 may elastically fix a plurality of alignment pieces 130 disposed in each guide opening 112 of the case portion 110.

That is, the band member 140 is a ring-shaped rubber band made of an elastic material, and may elastically fix the plurality of alignment pieces 130 disposed radially around the outer portion.

At this time, an outer portion of each of the alignment pieces 130 may be formed with a locking groove 132 through which the band member 140 can be locked.

Accordingly, the plurality of alignment pieces 130 radially disposed in the case 110 may be pressed in a direction toward the screw member 120 by the elastic force of the band member 140.

The operation member 150 may be coupled on the shaft of the screw member 120 to support the inclined surface 131 formed on the plurality of alignment pieces 130 through the outer surface of the body.

In addition, when the screw member 120 is rotated, it lifts along the axis of the screw member 120 and presses or releases the inclined surface 131 of the alignment piece 130, so that the plurality of alignment pieces 130 It can be moved in the outer or inner direction of (110).

Specifically, the operation member 150 may be formed in the form of a plate body having a predetermined thickness in which a screw hole 151 is formed in the central portion.

Accordingly, the screw member 120 may be inserted into the screw hole 151 of the operating member 150, and at this time, the screw of the operating member 150 is attached to the male thread (screw) formed on the outer circumferential surface of the screw member 120. The female thread formed in the hole 151 is coupled, so that the operation member 150 may be provided to be movable along the male thread of the screw member 120 in the axial direction.

In addition, a plurality of guide grooves 152 may be formed around the outer circumferential surface of the operation member 150 to which the inclined surface 131 of the alignment piece 130 is inserted and supported.

With this configuration, in a state in which the operation member 150 is coupled to the screw member 120, the alignment pieces 130 may be inserted and supported respectively in the plurality of guide grooves 152 formed on the outer circumferential surface, and thus the screw member When rotating 120, the operation member 150 may move along the axis of the screw member 120 while being guided along the alignment pieces 130 supported in each guide groove 152 without rotating.

In addition, the operation member 150 moving along the axis of the screw member 120 is moved while supporting the inclined surface 131 of the alignment piece 130, according to the moving direction, through the inclined surface 131, the alignment piece ( By pressing or releasing the pressure (130), the plurality of alignment pieces 130 may be moved in an outer direction or an inner direction of the case unit 110.

That is, in this embodiment, an inclined surface 131 is formed at the rear end of the alignment piece 130 facing the screw member 120 so that the upper part protrudes and the lower part is depressed. At this time, the axis of the screw member 120 Accordingly, when the operating member 150 rises, the operating member 150 moves toward the upper portion of the alignment piece 130 and supports the inclined surface 131 that gradually protrudes, thereby pushing the alignment piece 130 outward. , The alignment piece 130 may protrude outward from the case portion 110 through the guide opening 112.

In addition, when the operating member 150 descends along the axis of the screw member 120, the operating member 150 moves toward the lower side of the alignment piece 130 and supports the inclined surface 131 that is relatively gradually depressed, The pressing force pushing the alignment piece 130 may be released, and in this case, the alignment piece 130 is moved from the case portion 110 by the elastic force of the band member 140 for elastically fixing the alignment piece 130. 112) can be moved in a predetermined width inward direction.

At this time, the front end portion of the alignment piece 130 protruding from the case portion 110 is a portion that is aligned by pressing the inner surface of the plate body hole, and may always be disposed in a state protruding from the case portion 110, and the alignment piece 130 ) The amount of protrusion may be adjusted according to the moving width that moves in the outer or inner direction through the guide opening 112 of the case part 110.

Meanwhile, the above-described embodiment shows an example in which the operation member 150 is formed in a disk shape and the guide groove 152 supporting the inclined surface 131 of the alignment piece 130 is formed on the outer circumferential surface. It is not limited thereto, and the alignment piece 130 may be supported through the outer circumferential surface of the operation member 150 without forming the guide groove 152, and the shape of the operation member 150 may also be formed in a polygonal plate shape. have.

In addition, the variable hole fixing device 100 according to the present embodiment having the configuration as described above may further include an auxiliary guide member 160 that assists the movement of the alignment piece 130 inside the case unit 110. have.

The auxiliary guide member 160 is fixed to the inner side of the case unit 110, and is formed to surround the screw member 120 and the operation member 150, and the alignment piece 130 is guide-coupled to enable slide movement around the outer circumferential surface. A plurality of auxiliary guide openings 164 may be formed.

Specifically, the auxiliary guide member 160 is coupled to the fixing member 161 fixed to the inner surface of the case portion 110, the fixing member 161, is formed in an inverted funnel shape, and the screw member 120 It is formed to surround the operation member 150, may include a guide cover 163 in which a plurality of auxiliary guide openings 164 are formed in a portion corresponding to the plurality of alignment pieces 130 on the outer circumferential surface of the body.

Here, the fixing member 161 is fixed from the inside of the case portion 110 to the upper side, and a through hole 162 through which the screw member 120 passes may be formed in the center portion.

In addition, the guide cover 163 is coupled to the lower portion of the fixing member 161, is formed in the shape of an inverted funnel of the upper side light (上狹下廣) to surround the screw member 120 and the operation member 150 It may be, and may act as a stopper by limiting the moving range of the operation member 150 moving along the axis of the screw member 120 through an inverted funnel shape.

In addition, a plurality of auxiliary guide openings 164 to which the alignment pieces 130 are guide-coupled may be formed on the outer circumferential surface of the guide cover 163, and these auxiliary guide openings 164 are guide openings formed in the case portion 110 By supporting the side surface of the alignment piece 130 together with 112, the guide movement of the alignment piece 130 may be assisted in a more rigid structure.

At this time, in the case of the alignment piece 130, as described above, the alignment piece 130 is arranged by pressing the holes between the overlapped plate bodies. In this embodiment, the alignment piece 130 through the guide opening 112 and the auxiliary guide opening 164 By supporting the side of the, it is possible to more stably support and guide the alignment piece 130 that can receive a strong pressure.

On the other hand, the variable hole fixing device 100 according to the present embodiment as described above, at least one or more auxiliary alignment pieces 170 detachably coupled to the front end of the alignment piece 130 for pressing the inner side of the plate body hole It may further include.

Figure 4 shows a structure in which the auxiliary alignment piece 170 is coupled to the alignment piece 130 according to the first embodiment of the present invention.

Referring to FIG. 4, the auxiliary alignment piece 170 may be detachably coupled to the front end of the alignment piece 130 through a fastening means 171.

That is, when the auxiliary alignment piece 170 is coupled to the alignment piece 130, the range that can be radially expanded by the auxiliary alignment piece 170 may be further increased.

In other words, in the case of a hole having a diameter exceeding the expansion range of the alignment piece 130 extending radially, the auxiliary alignment piece 170 by coupling the auxiliary alignment piece 170 to the alignment piece 130 further increases the expansion range. ) To support the inner circumference of the hole.

In this case, a plurality of auxiliary alignment pieces 170 may be provided and may be coupled to each other so as to extend in an outward direction.

That is, in a manner in which the auxiliary alignment piece 170 is coupled to the front end of the alignment piece 130, and other auxiliary alignment pieces 170 are coupled to the front end of the auxiliary alignment piece 170, the alignment piece 130 A plurality of auxiliary alignment pieces 170 may be combined, and in this case, the extended range may be further increased.

In addition, the fastening means 171 for coupling between the alignment piece 130 and the auxiliary alignment piece 170, or between the auxiliary alignment pieces 170 may include a bolt fastening method, a magnet attachment method, or a protrusion/groove coupling method. Can be applied.

Meanwhile, in the following, the state of use of the variable hole fixing device 100 according to the first embodiment of the present invention as described above will be described in detail.

5 shows a state of use of the variable hole fixing device 100 according to the first embodiment of the present invention.

Usually, in the process of manufacturing a support body with holes such as lugs, a plurality of plate bodies with holes of the same diameter are overlapped and welded to form a lug. At this time, the holes between the overlapping plate bodies are aligned. After matching and fixing, welding should be performed.

5, the variable hole fixing device 100 according to the present embodiment is a device capable of accurately aligning and fixing holes between the plate bodies when welding after overlapping a plurality of plate bodies having holes formed thereon. , The operator can operate it by inserting it into the hole of the overlapped plate body.

Specifically, as shown in FIG. 5, when the variable hole fixing device 100 is inserted into the hole of the overlapped plate body, and then the screw member 120 is rotated by rotating the handle 121, the operating member 150 is screwed. While rising along the axis of the member 120 to support the inclined surface 131 of the protruding side of the alignment piece 130, by pushing the plurality of alignment pieces 130 in the outward direction, the plurality of alignment pieces 130 ) May protrude outward from the case part 110 through the guide opening 112.

At this time, as the plurality of alignment pieces 130 protruding through the guide opening 112 of the case unit 110 are radially expanded with the same width, the plurality of alignment pieces 130 are supported on the inner side of the overlapped plate body hole. Holes can be matched exactly, and at the same time, the plate body with matching holes can be firmly fixed.

On the other hand, when the holes are matched and fixed by the variable hole fixing device 100, the fixed plate bodies can be welded, and after the welding is completed, the handle 121 of the variable hole fixing device 100 is rotated in reverse to the plate body. By releasing the plurality of alignment pieces 130 fixed to the hole, the variable hole fixing device 100 can be separated from the plate body hole.

At this time, when the screw member 120 is rotated in reverse by turning the handle 121 in the reverse direction, the operation member 150 descends along the axis of the screw member 120 and the inclined surface 131 of the recessed side of the alignment piece 130 ), the pressing force pushing the alignment piece 130 may be released, in this case, the plurality of alignment pieces 130 by the elastic force of the band member 140 elastically fixing the plurality of alignment pieces 130 The case part 110 may be moved inward through the guide opening 112.

In this state, the plurality of alignment pieces 130, which have fixed the hole of the plate body, are moved in the inner direction of the case portion 110 to be released from the fixing, so that the variable hole fixing device 100 can be separated from the plate body hole.

6 shows the configuration of a variable hole fixing device 200 according to a second embodiment of the present invention.

Referring to Figure 6, the variable hole fixing device 200 according to the second embodiment of the present invention, compared to the variable hole fixing device 100 of the first embodiment described above, it is made of a structure that is very similar (大同小異). It consists of a structure in which the operation member 250 is integrally fixed on the screw member 220 and operates a plurality of alignment pieces 230 through the operation member 250 according to the elevation of the screw member 220 There is a difference in that it becomes.

Specifically, in the variable hole fixing device 200 according to the present embodiment, the screw member 220 may be screw-coupled to the coupling hole 211 formed in the case portion 210 so as to be elevating.

Accordingly, when the handle 221 provided at one end of the screw member 220 is rotated, the screw member 220 may rise or fall from the case part 210 according to the rotation direction of the handle 221.

In addition, the operation member 250 may be integrally fixed on the lower shaft of the screw member 220.

With this configuration, the variable hole fixing device 200 according to the present embodiment is inserted into the hole of the overlapped plate body, and then rotates the screw member 220 by rotating the handle 221, the screw in the case 210 As the member 220 rises, the operating member 250 fixed to the screw member 220 rises together, and in this process, the operating member 250 supports the inclined surface 231 on the protruding side of the alignment piece 230 As a result, the plurality of alignment pieces 230 are pushed outward, so that the plurality of alignment pieces 230 may protrude outward from the case part 210 through the guide opening 212.

At this time, the plurality of alignment pieces 230 protruding through the guide opening 212 of the case part 210 are radially expanded to the same width and supported on the inner side of the overlapped plate body, so that the holes can be accurately matched. , The plate body with the matching holes can be firmly fixed.

In addition, after the plate body welding is completed, by turning the handle 221 of the variable hole fixing device 200 reversely to release the plurality of alignment pieces 230 fixed to the hole of the plate body, the variable hole fixing device 200 is Can be removed from the plate hole.

As described above, the variable hole fixing device 100 and 200 according to the embodiment of the present invention, when welding after overlapping a plurality of plate bodies having holes formed thereon to manufacture a lug, etc. When the handles (121, 221) are simply inserted into the hole and the handles (121, 221) are rotated, the plurality of alignment pieces (130, 230) are radially expanded to align the holes formed in the plate body, and at the same time, the holes in which the holes are aligned are firmly fixed, thereby accurately matching the holes between the plates By doing so, it is possible to perform a plate body welding operation, so that operation convenience and work efficiency can be effectively improved.

The embodiments of the present invention disclosed in the present specification and drawings are only provided for specific examples to easily explain the technical content of the present invention and to aid understanding of the present invention, and are not intended to limit the scope of the present invention.

Therefore, the scope of the present invention should be construed that all changes or modified forms derived based on the technical idea of the present invention in addition to the embodiments disclosed herein are included in the scope of the present invention.

100,200: variable hole fixing device 110,210: case part
120,220: screw member 130,230: alignment piece
140: band member 150, 250: operating member
160: auxiliary guide member 170: auxiliary alignment piece

Claims (5)

A case portion having a hollow cylindrical shape inside, a coupling hole formed on one side, and a plurality of guide openings formed at regular intervals around an outer peripheral surface;
A rod-shaped screw member disposed in the center of the case and rotatably coupled to the coupling hole;
A plurality of alignment pieces disposed radially around the screw member and movable in an outward or inward direction of the case part through the plurality of guide openings; And
A variable hole fixing device comprising an actuating member coupled to the shaft of the screw member, ascending and descending according to the rotation of the screw member, and moving the plurality of alignment pieces in an outer or inner direction of the case part.
The method of claim 1,
The plurality of alignment pieces has a rear end toward the screw member formed as an inclined surface,
The operation member supports the inclined surfaces formed on the plurality of alignment pieces, and moves the plurality of alignment pieces in an outer or inward direction of the case part by lifting and lowering according to the rotation of the screw member and pressing or releasing the inclined surface. Variable hole fixture.
The method of claim 1,
The operation member,
A variable hole fixing device in which a plurality of guide grooves are formed around an outer circumferential surface, into which a rear end of the alignment piece having the inclined surface is inserted.
The method of claim 1,
Variable hole fixing device further comprising at least one auxiliary alignment piece detachably coupled to the front end of the alignment piece.
The method of claim 1,
Further comprising an auxiliary guide member provided inside the case portion to assist the movement of the plurality of alignment pieces,
The auxiliary guide member,
A fixing member fixed to the inner surface of the case part; And
A variable hole fixing device comprising a guide cover coupled to the fixing member, formed to surround the screw member and the actuating member, and having a plurality of auxiliary guide openings formed on an outer circumferential surface thereof to assist movement of the plurality of alignment pieces.

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