Multidirectional vise device and method for cutting multidirectional test specimens using the same

Abstract

To provide a multi-directional vise device.SOLUTION: A multi-directional vise device holds and guides a specimen having a length in one direction while allowing the specimen to be cut in multiple directions. The device comprises: a first body part and a second body part facing each other and spaced apart from each other by a certain gap in a second direction vertical to a first direction, which is a length direction of the specimen, while having the first direction as a reference axis; at least one or more jig parts disposed in each portion of the first body part and the second body part that accommodates the specimen; and a compression part adjusting the gap between the first body part and the second body part, where at least one of the first body part and the second body part has at least a portion of its upper side that includes a cut part formed in the second direction.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a multi-directional vise device capable of guiding in multiple cutting directions after fixing a test piece when cutting the test piece in multiple directions, and a method for cutting a multi-directional test piece using the same. [Background Art]

[0002] Depending on the purpose of use and requirements of the test piece, a portion of the test piece can be welded in terms of quality. In order to perform welding according to the material and purpose of the test piece, by appropriately selecting and working according to various requirements such as welding method, welding equipment, welding position, welding material and welding environment, desired welding results can be obtained, and subsequent mass production processes can be standardized based on each selected variable.

[0003] Here, in welding operations, after welding, a quality inspection can be performed to confirm the quality of partial welding through appropriate inspection and measurement, and a refining process is required based on this. Generally, quality inspections include visual inspection, non-destructive testing (NDT), heat treatment evaluation and mechanical testing.

[0004] Among them, visual inspection is the most intuitive inspection method that can be performed easily and simply by directly checking surface defects, welding unevenness, cracks or welding abnormalities on the welded part. When performing visual inspection on welding performed inside a test piece, if the diameter of the test piece is large, the inspection can be performed by directly viewing the interior. However, when the diameter of the test piece is small, it is difficult to directly check the interior, so it is necessary to cut the welded part or the area around it. Here, in order to cut the test piece to such an extent that the welded portion inside the test piece can be inspected, at least a part of the test piece must be exposed, which requires cutting the test piece in at least vertical and horizontal directions so that a part of the test piece is exposed.

[0005] However, conventional devices that can assist in cutting while fixing a test specimen have limitations in stably fixing the specimen. In particular, in the case of pipe-shaped test specimens with a circular outer surface, it is difficult to cut at an accurate position unless the test specimen is stably and firmly fixed. For example, after fixing the test specimen with means such as clamps, the necessary part is cut using a saw, but in this case, the force and vibration generated by the saw cannot be effectively controlled by existing fixing devices, limiting the precision of the cutting work. Also, even when cutting in multiple directions is required, conventional fixing methods allow the operator to cut in multiple directions simply by changing the direction of the saw while fixing the test specimen in one position, making it difficult to perform the work while maintaining the accurate dimensions and shape of the welded part of the test specimen, and it is difficult to guarantee stability and accuracy for the welded part, limiting the precision of the cutting work. Furthermore, since this method involves cutting by hand with a hacksaw, it is time-consuming. [Overview of the project] [Problems that the invention aims to solve]

[0006] The present invention was derived to solve the above-mentioned problems, and aims to provide a multi-directional vise device and a method for cutting a test specimen in multiple directions using the same, which can not only firmly fix the test specimen when cutting it for welding quality inspection of the test specimen, but also guide it for cutting in multiple directions, thereby assisting in precise cutting work.

[0007] Furthermore, when cutting test specimens that require cutting, using power tools such as jigsaws, the multi-directional vise device of the present invention aims to provide a vise device that can more firmly fix the test specimen and guide it more precisely to the position where cutting is required. [Means for solving the problem]

[0008] To solve the above-mentioned problems, a multi-directional vise device according to one embodiment of the present invention is a multi-directional vise device for mounting and guiding a test piece having length in one direction so as to be able to cut in multiple directions, comprising: a first main body and a second main body arranged opposite to each other at a predetermined distance apart in a second direction perpendicular to the first direction which is the longitudinal direction of the test piece, a reference axis, at least one jig part arranged in the part of the first main body and the second main body in which the test piece is housed, and a compression part for adjusting the distance between the first main body and the second main body, wherein at least one of the first main body and the second main body includes a cutting portion in the second direction, at least a portion of the upper side.

[0009] Furthermore, the first main body includes a cutting portion, and the jig portion is divided into two by the cutting portion.

[0010] Furthermore, the multi-directional vise device is characterized by further including an upper plate which houses both the first and second main body portions and is positioned above, and which includes a guide portion with through holes formed on its inner side along the first direction.

[0011] Furthermore, the upper plate includes a rotating shaft that is fixed together with the main body, and the upper plate is characterized in that it rotates in a first or second direction with respect to the rotating shaft.

[0012] Here, the top plate has a rectangular shape with a longer length in the first direction, and the axis of rotation is fixed at a predetermined point on the edge of the top plate, near the center of the length of the top plate, and at a predetermined point on the edge of the main body, including the cut portion.

[0013] Furthermore, the upper plate has a length in a second direction and is characterized by further including a stopper that is formed on the upper side of the upper plate so as to be movable in the first direction.

[0014] Here, the upper plate includes sliding grooves formed along the first direction on both sides in the second direction, and the stopper is characterized in that both ends are fixed to each sliding groove and slide on the upper plate.

[0015] Furthermore, one end of the upper plate is on the same line as one end of the first main body and one end of the second main body, and the multi-directional vise device is further characterized in that it includes an upper plate fixing part which is fixedly formed on one side of the main body including the cutting portion and fixes the position of the upper plate by bringing the side of the main body and the upper plate into contact with each other.

[0016] Furthermore, the jig portion is characterized in that its inner circumferential surface is formed along the outer edge of the test piece.

[0017] Here, the test piece includes a welded portion formed along its periphery in at least part of its length, and the jig portion is formed including a weld groove that accommodates the welded portion.

[0018] Furthermore, the jig section is characterized by being detachable from the main body.

[0019] Furthermore, the compression section is characterized by having a cylinder structure.

[0020] A method for cutting a test specimen in multiple directions using the multi-directional vise device of the present invention, comprising: a) placing the test specimen on the jig with its longitudinal direction parallel to a first direction; b) fixing the test specimen by adjusting the distance between the first main body and the second main body using a compression part; c) rotating the upper plate with respect to the rotation axis so that the guide part of the upper plate is parallel to the first direction, thereby guiding the cutting of the test specimen in the first direction; and d) rotating the upper plate with respect to the rotation axis so that the guide part of the upper plate is parallel to the second direction, thereby guiding the cutting of the test specimen in the second direction. [Effects of the Invention]

[0021] The multidirectional vise device of the present invention having the above-described configuration and the method for cutting a multidirectional test piece using the same relate to a vise device that can accurately and easily assist in positioning cuts at least in the longitudinal direction of a test piece and in the direction perpendicular to the longitudinal direction, wherein by forming a replaceable jig part, the test piece can be firmly fixed regardless of the external shape of the test piece; a pair of main body parts are formed to face each other with the longitudinal direction as a reference, the characteristics of the main body parts guide cutting in the longitudinal direction, and by including a cut portion in a part of the main body part, cutting can also be guided in the perpendicular direction; and by guiding cutting in multiple directions while the test piece is fixed at one position, the cutting work of the test piece can be assisted more accurately and precisely. [BRIEF DESCRIPTION OF THE DRAWINGS]

[0022] [Figure 1] It is a perspective view of a partially cut test piece according to one embodiment. [Figure 2] It is a perspective view of a multidirectional vise device and a test piece according to one embodiment. [Figure 3] It is a rear perspective view of a multidirectional vise device according to one embodiment. [Figure 4] It is a plan view of a multidirectional vise device according to one embodiment. [Figure 5] It is a perspective view of a multidirectional vise device in which an upper plate is arranged in a first direction and a test piece is fixed according to one embodiment. [Figure 6] It is a front view of a multidirectional vise device in which an upper plate is arranged in a first direction and a test piece is fixed according to one embodiment. [Figure 7] It is a perspective view of a multidirectional vise device in which an upper plate is arranged in a second direction and a test piece is fixed according to one embodiment. [Figure 8] It is a perspective view of a multidirectional vise device fixing a test piece, in which a stopper of the upper plate is moved according to one embodiment. [Figure 9] It is a perspective view of a multidirectional vise device fixing a cutting tool according to one embodiment. [DESCRIPTION OF THE EMBODIMENTS]

[0023] The objectives, features, and merits of the present invention described above will become more apparent with reference to the following embodiments relating to the accompanying drawings. The following specific structural or functional descriptions are merely illustrative to illustrate embodiments of the concept of the present invention, and embodiments of the concept of the present invention can be carried out in various forms and should not be construed as being limited to the embodiments described herein or in the application. Embodiments of the concept of the present invention can be modified in various ways and may take various forms; therefore, specific embodiments are illustrated in the drawings and described in detail herein or in the application. However, this should not be understood as limiting embodiments of the concept of the present invention to any particular disclosure form, but rather as including all modifications, equivalents, or substitutes that fall within the spirit and technical scope of the present invention. Terms such as first and / or second may be used to describe various components, but components are not limited to the terms. The terms are used solely for the purpose of distinguishing one component from another, for example, without departing from the scope of the concept of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. When it is stated that one component is linked or connected to another, it should be understood that it may be directly linked or connected to the other component, or that other components may be in between. On the other hand, when it is stated that one component is directly linked or connected to another component, it should be understood that there are no other components in between. Other expressions used to describe the relationship between components, namely expressions such as "between," "immediately between," or "adjacent to," and "directly adjacent to," should be interpreted similarly. The terms used herein are used solely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.In this specification, terms such as "includes" or "has" specify the presence of a described feature, figure, step, action, component, part, or combination thereof, without prejudice to the presence or possibility of adding one or more other features, figures, steps, actions, components, parts, or combinations thereof. Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by a person of ordinary skill in the art to which this invention pertains. Terms as defined in commonly used dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant art, and not as ideally or excessively formal unless expressly defined herein. The invention will now be described in detail by describing preferred embodiments of the invention with reference to the accompanying drawings. The same reference numerals shown in each drawing indicate the same component.

[0024] The present invention relates to a vise device that can be used when cutting a portion of a test piece 10 having length in one direction as needed, and is characterized in that it is a multi-directional vise device 1000 that can firmly fix the test piece 10 after it has been placed on it, regardless of the size, external shape, type, etc. of the test piece 10, and can guide the fixed test piece 10 so that it can be cut in multiple directions. Herein, as an embodiment of the present invention, the multi-directional vise device 1000 of the present invention can be used when inspecting a weld applied to a test piece 10 formed in the shape of a pipe, and in particular when the diameter is small and it is difficult to check the inside of the test piece 10, it is characterized in that it is a device that can guide the cutting position in multiple directions while holding and fixing the test piece 10 when checking the welding condition inside by cutting a portion of the test piece 10 in multiple directions.

[0025] Referring to Figure 1, the test piece 10 of the present invention can be in the shape of a pipe with a certain length, and includes a welded portion 11 welded along the periphery in a predetermined portion. Furthermore, the test piece 10 can be cut in the longitudinal direction and in the direction perpendicular to it to check the condition of the welded portion 11 of the test piece 10 and to check the interior. There are various methods for cutting the test piece 10 to check the interior, but in order to simplify the method, the present invention first cuts a portion of the test piece 10 along the longitudinal direction including the welded portion 11, and then cuts a portion of the cross section in the radial direction of the test piece 10 at one of the cut ends so that at least half of the area of ​​the test piece 10 is exposed. Here, the longitudinal direction of the test piece 10 is referred to as the first direction, and the radial direction, which is perpendicular to the longitudinal direction, is referred to as the second direction. Accordingly, the multi-directional vise device 1000 of the present invention is characterized by being a device that can guide the cutting of the test piece 10 in the first direction and the second direction while fixing the test piece 10.

[0026] Therefore, referring to Figures 2 to 4, in a multi-directional vise device 1000 for mounting and guiding a test piece 10 having length in one direction so as to be cut in multiple directions, the device includes a first main body portion 111 and a second main body portion 112 arranged opposite to each other at a predetermined distance apart in a second direction perpendicular to the first direction which is the longitudinal direction of the test piece 10, a jig portion 120 arranged in the part of the first main body portion 111 and the second main body portion 112 in which the test piece 10 is housed, and a compression portion 140 for adjusting the distance between the first main body portion 111 and the second main body portion 112, wherein at least one of the first main body portion 111 and the second main body portion 112 preferably includes a cutting portion 130 in the second direction in at least a part of its upper side.

[0027] The present invention includes a main body portion 110 on which a test specimen 10 can be placed and fixed. In this invention, the main body portion 110 can be configured in at least two parts, and the test specimen 10 can be placed and fixed by a pair of main body portions 110 contacting and tightening both ends of the test specimen 10. Thus, the present invention is characterized in that the main body portion 110 is composed of a first main body portion 111 and a second main body portion 112, and the first main body portion 111 and the second main body portion 112 are arranged opposite each other at a predetermined distance apart in the direction perpendicular to the longitudinal direction of the test specimen 10. Here, the first main body portion 111 and the second main body portion 112 can be formed to correspond to each other in size and shape. As a result, the test specimen 10 is positioned between the first main body portion 111 and the second main body portion 112, and the distance between the first main body portion 111 and the second main body portion 112 is adjusted by the compression portion 140, and the test specimen 10 can be fixed while wrapping around the periphery of the test specimen 10.

[0028] Referring to Figures 1 to 4, the first main body 111 and the second main body 112 are arranged at a predetermined distance from each other on both sides in each second direction so as to accommodate a portion of the periphery of the test piece 10. That is, the first main body 111 and the second main body 112 are arranged facing each other in the second direction with respect to the first direction. As a result, the main body 110 can guide cutting in the first direction while the test piece 10 is simply fixed in place. The first main body 111 and the second main body 112 are each formed with a predetermined width in a direction parallel to the longitudinal direction of the test piece 10 so as to accommodate a portion of the length of the test piece 10, that is, the test piece 10, which has a length, can be placed in a form in which a portion of its length is accommodated within each main body. As a result, each of the first main body 111 and the second main body 112 accommodates a portion of the periphery of the test piece 10. Furthermore, the first main body portion 111 and the second main body portion 112 are characterized in that the distance between them is adjusted by the compression portion 140, by shortening or lengthening the distance between them in each second direction.

[0029] Furthermore, the main body portion 110 includes a jig portion 120 for directly gripping the outer circumferential surface of the test piece 10. The jig portion 120 is formed in the main body portion 110 at a position where the test piece 10 needs to be housed, and the jig portion 120 can be composed of multiple portions as needed to more stably fix the test piece 10. Referring to Figures 2 and 3, it is preferable that the first main body portion 111 and the second main body portion 112 are each composed of at least one or more jig portions 121 and 122. Here, each jig portion 121 and 122 can be formed in adjacent positions within the main body portion 110 and can be positioned on the upper end side of the main body portion 110 to facilitate cutting of the test piece 10. That is, it is preferable that the jig portions 120 are formed in the same position so that the first main body portion 111 and the second main body portion 112 are in contact with each other at their opposing inner upper ends.

[0030] Furthermore, the inner circumferential surface of the jig portion 120 can be formed along the outer circumferential edge of the test piece 10. Here, the inner circumferential surface of the jig portion 120 is the part that directly accommodates the test piece 10, and the jig portion 120 can be formed in various shapes on its inner circumferential surface as needed or depending on the type of test piece 10. It is also preferable that the jig portion 120 be formed of a material that makes it easy to fix the test piece 10. For example, the jig portion 120 can be formed of an elastic material so that it can actively accommodate the size and shape of the test piece 10. In addition, the jig portion 120 can be formed to be detachable from the main body portion 110. This makes it possible to accommodate various types of test pieces 10 by replacing the jig portion 120 having various shapes of inner circumferential surfaces with the main body portion 110 as needed. The main body 110 of the present invention may include a plurality of jig parts 120, where the jig parts 120 may have different inner surface shapes, or they may all be made with the same inner surface shape to facilitate the manufacture of the jig parts 120. For example, the jig part 120 may have a triangular groove formed on a part of its inner surface so that it can be used more generally depending on the outer shape of the test piece 10. Alternatively, the jig part 120 may have the same shape as the outer edge of the test piece 10, and if the test piece 10 is pipe-shaped, the jig part 120 may include a semicircular inner surface. Here, for the radius of the semicircle of the inner surface of the jig part 120, various sizes of jig parts 120 can be configured as needed, and the jig parts 120 can be replaced and used as needed.

[0031] As one embodiment of the present invention, the multi-directional vise device 1000 of the present invention is a device that can assist in cutting a test piece 10 for inspection of the internal welding condition, and the test piece 10 may include a welded portion 11 formed along the outer diameter in at least a portion of it. Here, as shown in Figure 1, the welded portion 11 may be in a form that protrudes in part to the outside of the test piece 10. Here, as shown in Figures 2 and 3, the fixture parts 121 and 122 of the present invention may further include welding grooves 121a and 122a on their inner circumferential surfaces that accommodate the welded portion 11 in order to support the test piece 10 while also accommodating the welded portion 11. Therefore, the fixture parts 121 and 122 may have a shape in which the welding grooves 121a and 122a are recessed on their inner circumferential surfaces, which has the effect of allowing the welded portion 11 of the test piece 10 to move into the welding grooves 121a and 122a when the test piece 10 is placed on the fixture parts 121 and 122, thereby providing more stable fixation.

[0032] The compression section 140 adjusts the distance between the first main body section 111 and the second main body section 112, which are spaced apart from each other, and can be adjusted to shorten or lengthen the distance between the first main body section 111 and the second main body section 112. In other words, the compression section 140 is characterized by moving the main body section in a second direction. The compression section 140 can be configured without limitation as long as it is a device that can adjust the distance between the main body sections 111 and 112. Referring to Figures 2 to 4, in one embodiment of the present invention, the compression section 140 can be configured as a cylinder structure. In this configuration, the compression section 140 can be configured such that at least one guide rod is arranged to pass through both the first main body section 111 and the second main body section 112, and a driving force causes one of the main body sections, the first main body section 111 or the second main body section 112, to reciprocate toward the other main body section. Here, the first main body section 111 can reciprocate toward the second main body section 112. Furthermore, the second main body 112 includes a compression handle 141, and the rotation of the compression handle 141 causes the first main body 111 to reciprocate, adjusting the distance between the main body parts and thereby enabling the compression unit 140 to be driven.

[0033] In the present invention, the main body portion 110 is configured such that the first main body portion 111 and the second main body portion 112 are positioned apart from each other in a second direction with respect to a first direction. Subsequently, when the compression portion 140 shortens the distance between the first main body portion 111 and the second main body portion 112 and fixes the test piece 10, a predetermined distance toward the first direction is formed by the distance between the first main body portion 111 and the second main body portion 112, which can guide the cutting of the test piece 10 toward the first direction. Furthermore, the main body portion of the present invention is characterized in that at least one of the first main body portion 111 and the second main body portion 112 includes a cutting portion 130 toward the second direction, thereby guiding the cutting of the test piece 10 toward the second direction. Here, the cutting portion 130 is preferably formed on at least a part of the upper end of the main body portion, or the cutting portion 130 may divide a certain main body portion into two parts. However, in order to ensure smooth movement by the compression section 140, it is preferable that the main body 110 including the cutting section 130 includes the cutting section 130 in only a portion of it, with the compression section 140 connected to the integrated portion, so that the main body 110 can move together simultaneously. The cutting section 130 is formed by cutting off an area of ​​at least a portion of the upper end of the main body 110, and in this case, it is preferable that the entire area is cut in the second direction. The cutting section 130 can be formed in the center of the area of ​​the main body 110 in the first direction, and it is preferable that the extent of the cutting section 130 is such that a cutting blade for cutting the test piece 10 can be sufficiently inserted.

[0034] Referring to Figures 2 to 4, an example will be given to illustrate the point in more detail. The first main body 111 may include a cut portion 130 in which a part of the upper end is cut in a second direction. As a result, when the multi-directional vise device 1000 of the present invention is viewed from above, the first main body 111 and the second main body 112 are arranged opposite each other and of corresponding sizes. In this way, the first main body 111 can be divided into two parts based on the cut portion 130, compared to the second main body 112. That is, the main body 110 of the present invention can be composed of three parts, and each of the three parts is formed by the spacing in the first direction and the second direction. As a result, the multi-directional vise device 1000 of the present invention is characterized in that, after fixing the test piece 10, it can guide the test piece 10 in a first direction, which is a cut in the longitudinal direction of the test piece 10, and in a second direction, which is a cut in the radial direction of the test piece 10, according to the divided position. Here, the multi-directional vise device 1000 can have a length of the spacing formed in the first direction that is longer than the length of the cutting portion 130 in the second direction, depending on the size of each main body portion 110.

[0035] Referring to Figure 4, since the upper part of the first main body 111 is divided into two by the cutting portion 130, the jig portion 121 positioned on the upper side of the main body can also be configured in two parts. That is, the present invention preferably includes at least three jig portions 121, 122. The first main body 111 preferably includes the cutting portion 130 in at least the portion where the jig portion 121 is located, and the first main body 111 can have each jig portion 121 positioned on both sides with respect to the cutting portion 130. Here, the second main body 112 can have a form in which the jig portion 122 has a length along its width, and can be composed of multiple jig portions as needed. In one embodiment of the present invention, the jig portions 121, 122 are composed of four identical parts, one pair is composed of two parts of each first main body 121, and the other pair can be positioned in the second main body 112 so as to face each other at a position corresponding to the jig portion of the first main body 122.

[0036] Referring to Figures 5 and 6, it is preferable that the multi-directional vise device 1000 further includes an upper plate 200 which is positioned above and accommodates both the first main body portion 111 and the second main body portion 112, and which includes a guide portion 210 with through holes formed on its inside along the first direction. Here, it is preferable that the upper plate 200 is positioned above the main body portion 110 and is formed to a size that can accommodate at least the upper area of ​​the main body portion 110 such that the first main body portion 111 and the second main body portion 112 are positioned close together. Figure 5 is a perspective view of the multi-directional vise device 1000 in which the upper plate 200 is positioned in the first direction, and the guide portion 210 is characterized in that a portion of the area of ​​the upper plate 200 has through holes formed along the first direction spacing formed by the spacing between the first main body portion 111 and the second main body portion 112. In other words, the guide portion 210 is characterized by being a through-hole in a direction parallel to the spacing between the first main body portion 111 and the second main body portion 112 when they are arranged adjacent to each other by the compression portion 140, and positioned so as to be coaxial with the spacing between them. The length of the guide portion 210 is not limited as long as it can be accommodated within the upper plate 200. For convenience, the guide portion 210 can be positioned on the central side of the upper plate 200. Here, the through-hole of the guide portion 210 may have a length in the first direction, and if necessary, the through-hole of the guide portion 210 may be in the shape of a cross having lengths in the first and second directions. Here, it is preferable that the through-hole formed in the second direction is formed corresponding to the cutting portion 130.

[0037] The upper plate 200 of the present invention is characterized by being movably arranged on the upper side of the main body 110. Referring here to Figures 5 and 7, the upper plate 200 is characterized in that a guide portion 210 formed in a first direction can be rotated by at least 90 degrees so that the guide portion 210 is positioned horizontally along a second direction. The upper plate 200 of the present invention includes a rotation axis 220 fixed together with the main body 110, and the upper plate 200 is characterized by rotating in a first or second direction with respect to the rotation axis 220.

[0038] The rotating shaft 220 is fixedly formed to penetrate the upper plate 200 and the main body 110, and in this case, the upper plate 200 is formed to be rotatable. That is, the rotating shaft 220 fixes the upper plate 200 to the main body 110, and the upper plate 200 is configured to be rotatable at the upper end of the main body 110 with respect to the rotating shaft 220. Figure 5 is a perspective view of the multi-directional vise device 1000 with the upper plate 200 rotated in the first direction, and Figure 7 is a perspective view of the multi-directional vise device 1000 with the upper plate 200 rotated in the second direction. Referring to Figures 5 and 7, when the guide portion 210 of the upper plate 200 is first positioned parallel to the first direction, the rotating shaft 220 causes the upper plate 200 to rotate in the second direction, and the guide portion 210 can rotate in a direction parallel to the second direction.

[0039] Furthermore, the top plate 200 has a rectangular shape with a longer length in the first direction, and the rotation axis 220 can be fixed at a position on the edge of the top plate 200 that is close to the center of the length of the top plate 200, and at a predetermined portion of the edge of the main body 110 including the cut portion 130. Referring to Figure 5, the top plate 200 can have a width that can accommodate the first main body 111 and the second main body 112, and can have a rectangular shape with a longer length in the first direction. Also, when the top plate 200 is positioned so that its length is directed in the first direction, one end of the top plate 200 can be positioned so that it is on the same line as one end of the main body 110. That is, as shown in Figure 5, the basic position of the top plate 200 is such that one end of the top plate 200 and one end of the main body 110 are on the same line, and the other end of the top plate 200 can be positioned so that it protrudes from the other end of the main body 110. Furthermore, the rotation axis 220 can be fixed to the main body portion 110, which includes the cut portion 130, of the first main body portion 111 and the second main body portion 112, where the first main body portion 111 includes the cut portion 130. With respect to the basic position of the upper plate 200, the rotation axis 220 is positioned on the edge of the first main body portion 111 that is on the same vertical line as the first main body portion 111 on both sides in the second direction of the area of ​​the upper plate 200, and in this case, the central portion of the length of the upper plate 200 can be fixed and positioned. Therefore, when the rotation axis is formed to penetrate both the upper plate 200 and the main body portion 110, it can be positioned on the other side edge on the first main body portion 111, depending on the basic position of the upper plate 200, and on the upper plate 200, it can be positioned in the center of the edge on the first main body portion 111 side. Thus, the upper plate 200 is characterized by rotating in the first or second direction with respect to the rotation axis 220 while the edge of the upper plate 200 is fixed.

[0040] Here, according to the basic position of the upper plate 200 as shown in Figure 5, one end of the upper plate 200 can be on the same line as one end of the first main body 111 and the second main body 112. This allows the multi-directional vise device 1000 to be used to assist in cutting the length of the test piece 10 when the test piece 10 needs to be cut during the test piece 10 process, by inserting the test piece 10 into the multi-directional vise device 1000 and using one end of the multi-directional vise device 1000 to cut one end of the test piece 10.

[0041] The upper plate 200 of the present invention is characterized in that it rotates while being partially fixed to the main body 110. Here, the upper plate 200 is rotatable, and in order to fix the position of the upper plate 200, the multi-directional vise device 1000 of the present invention further includes an upper plate fixing part 150 that can fix the position of the upper plate 200 by bringing one side surface of the main body 110 and one side surface of the upper plate 200 into contact with each other. Referring to Figures 5 to 7, it is preferable that the upper plate fixing part 150 is positioned at the upper end portion of the main body 110 so that the upper plate 200 and the main body 110 can easily come into contact with each other. The upper plate fixing part 150 can be formed in the shape of a block having a predetermined length, and one end of the block can be fixed by coming into contact with one side surface of the main body 110 when the block is perpendicular to the ground. Here, the upper plate fixing part 150 can further include a rotation axis 220, and one end of the upper plate fixing part 150 can be fixed by the rotation axis 220, while the other end of the block can rotate freely. Here, one end of the upper plate fixing portion 150 can be a portion that extends downward from the main body portion 110. The other end of the upper plate fixing portion 150 can be positioned to protrude above the main body portion 110. Therefore, although the lower end of the upper plate fixing portion 150 is fixed in contact with the side surface of the main body portion 110 by the rotating shaft 220, the upper end portion of the upper plate fixing portion 150 that protrudes from the main body portion 110 is in contact with the side surface of the upper plate 200, thereby fixing the position of the upper plate 200. Here, the upper plate fixing portion 150 can be vertically fixed to one side surface of the first main body portion 111 based on the basic position of the upper plate 200.

[0042] Referring to Figures 5 and 8, the upper plate 200 has a length in a second direction and preferably further includes a stopper 230 formed on the upper side of the upper plate 200 so as to be movable in a first direction. Here, the stopper 230 is for adjusting the length of the guide portion 210 and is preferably provided such that its length is arranged on the upper plate 200 in a direction perpendicular to the length of the guide portion 210. That is, the stopper 230 is formed in a rod shape having a length in the width direction of the upper plate 200 and is characterized by moving on the upper plate 200 in a first direction. To explain with reference to the basic position of the upper plate 200, when the longitudinal direction of the upper plate 200 is arranged in a first direction, the stopper 230 having a length in a second direction perpendicular to the longitudinal direction of the upper plate 200 moves on the upper plate 200 along the longitudinal direction of the upper plate 200. As a result, Figure 8 is a perspective view of a multi-directional vise device 1000 in which the upper plate 200 is positioned in its basic position and the stopper 230 moves on the upper plate 200 as needed. As shown in Figure 8, the length of the stopper 230 and the length of the guide portion 210 perpendicular to it can be limited depending on the position of the stopper 230.

[0043] The stopper 230 is characterized by being formed to be freely movable within the upper plate 200 along the length of the upper plate 200. Here, the stopper 230 can be used without limitation as long as it is a means that can move freely on the upper plate 200. Referring to Figures 7 and 8 as an embodiment of the present invention, the upper plate 200 includes sliding grooves 231 formed on both sides in the second direction, with a length along the first direction, and the stopper 230 can be configured so that both ends are fixed to each sliding groove 231. Thus, in the present invention, the stopper 230 is configured to slide on the upper plate 200. To explain using the basic position of the top plate 200 as a reference, the length of the top plate 200 is positioned in a first direction, and as a result, sliding grooves 231 are formed indented on the sides of each end of the top plate 200 in the width direction, along the length of the top plate 200, and as a result, both ends of the stopper 230 are inserted into each sliding groove 231 in the longitudinal direction, and the position of the stopper 230 on the top plate 200 can be adjusted by sliding it within the sliding grooves 231. Here, a bolt may be included at either end of the stopper 230, and the position of the stopper 230 on the top plate 200 can be fixed by tightening the bolt toward the sliding groove 231 side. The stopper 230 can be used as a support surface for power tools when the test piece is long.

[0044] Furthermore, referring to Figures 7 and 9, the multi-directional vise device 1000 of the present invention allows a test piece to be fixed to the main body 110, and then cut along the guide portion 210 using a cutting tool 20 such as an electric power tool. Here, in order for the cutting tool 20 to perform precise cutting, the upper plate of the multi-directional vise device 1000 is characterized by including a first support surface 240 that can support a part of the cutting tool 20. The first support surface 240 is formed on the upper plate 200, and a block having a predetermined height can be arranged along the corner of the portion of the upper plate 200 where the rotation axis 220 is formed, and the height of the side surface of the block can form the first support surface 240. The support surface 240 can move along the guide portion 210 while a part of the cutting tool 20 is in close contact with the support surface 240, thereby supporting the position of a part of the cutting tool 20. This allows the cutting tool 20 to work along the first support surface 240 while maintaining close contact with the first support surface 240, even when vibrations are generated by the operation of the cutting tool 20, thus enabling precise cutting. Furthermore, referring to Figure 8, when the length of the test piece 10 is long, one side portion of the stopper 230 can be used as a second support surface 250 to which a portion of the cutting tool 20 abuts and is closely supported. As illustrated in Figure 9, the second support surface 250 can closely support the power tool 20 for cutting the length of the test piece 20 when the stopper 230 is located on one end of the multi-directional vise device 1000.

[0045] Herein, the present invention is characterized in that, using a multi-directional vise device 1000 having the above-mentioned features, the test piece 10 to be cut can be fixed in the vise device and guided to cut in multiple directions.

[0046] As a result, in a method for cutting a test piece 10 in multiple directions using the multi-directional vise device 1000 of the present invention, the method can be carried out by including the following steps: a) placing the test piece 10 on the jig part 120 with the longitudinal direction of the test piece 10 parallel to the first direction; b) fixing the test piece 10 by adjusting the distance between the first main body part 111 and the second main body part 112 using the compression part 140; c) rotating the upper plate 200 with respect to the rotation axis 220 so that the guide part 210 of the upper plate 200 is parallel to the first direction, thereby guiding the cutting of the test piece 10 in the first direction; and d) rotating the upper plate 200 with respect to the rotation axis 220 so that the guide part 210 of the upper plate 200 is parallel to the second direction, thereby guiding the cutting of the test piece 10 in the second direction.

[0047] First, as shown in Figure 1, step a) can be performed, in which the test piece 10 is placed on the jig portion 120 of the multi-directional vise device 1000. Step a) involves aligning the longitudinal direction of the test piece 10 parallel to the first direction, then positioning the test piece 10 between the first main body portion 111 and the second main body portion 112, and placing it on the jig portion 120. Here, since there is a gap between the first main body portion 111 and the second main body portion 112, the step can be performed by first placing the test piece 10 on the jig portion 120 on either the first main body portion 111 or the second main body portion 112. In step a), it is preferable that the test piece 10 is placed on the multi-directional vise device 1000 with the length of the guide portion 210 of the upper plate 200 facing the first direction.

[0048] Furthermore, as shown in Figure 5, the compression section 140 can be used to narrow the gap between the first main body 111 and the second main body 112, allowing step b) to be performed to fix the test piece 10. The compression section 140 can narrow or widen the gap between the first main body 111 and the second main body 112, and the compression section 140 adjusts the position of the pair of main body parts toward the test piece 10 placed on the jig parts 121 and 122, reducing the gap between the first main body 111 and the second main body 112 to the extent that the test piece 10 is pressed against it, allowing the test piece 10 to be fixed between the main body parts while applying pressure to it.

[0049] Furthermore, step c) can be performed to guide the fixed test piece 10 to cut in the first direction by the distance between the first main body portion 111 and the second main body portion 112. Here, in step c), the cutting guide in the first direction can be performed by the guide portion 210 of the upper plate 200, so that the upper plate 200 is in a reference position where the guide portion 210 is positioned along the first direction, as shown in Figure 5. However, if the upper plate 200 is not in the reference position, step c) can be performed after rotating the upper plate 200 in the first direction with respect to the rotation axis 220 to position it in the reference position. Then, using the cutting means, the test piece 10 can be cut in the longitudinal direction, which is the first direction, according to the guide portion 210. Here, the cutting of the test piece 10 in the first direction can be performed to a predetermined length as needed, and it is preferable that the cut be within the length of the guide portion 210. Also, as shown in Figure 8, the cut length can be limited by moving the stopper 230 of the upper plate 200 according to the length to be cut. Here, it is preferable that the portion of the test piece 10 that is cut in the first direction includes at least the weld 11 of the test piece 10. That is, the present invention is for confirming the weld 11 on the inside of the test piece 10, and it is preferable to cut the portion including the weld 11 in the first direction first.

[0050] Here, if the length of the test specimen 10 is unnecessarily long before performing step c), the length of the test specimen 10 can be cut first to facilitate the work before performing step c). This can be done by using one end of the test specimen 10 fixed to the multi-directional vise device 1000, where the upper plate 200 and the main body 110 are aligned at one end, and cutting the portion of the test specimen 10 that protrudes outside the main body 110 to match one end of the multi-directional vise device 1000. Here, if it is necessary to cut the length of both sides of the test specimen 10, after cutting one end of the test specimen 10, the test specimen 10 in the multi-directional vise device 1000 can be rotated in the opposite direction so that the other end of the test specimen 10 is positioned at one end of the multi-directional vise device 1000, and then the other end of the uncut test specimen 10 can be cut. In addition, the length of the test specimen 10 can be cut before step a) as needed, or selectively between each step.

[0051] Furthermore, once the test piece 10 is cut along the first direction, step d) can be performed, in which the upper plate 200 is rotated in the second direction with respect to the rotation axis 220 so that the guide portion 210 is positioned parallel to the second direction. Step d) is a step in which the upper plate 200, which has been rotated in the first direction as shown in Figure 5 by step c), is rotated in the second direction as shown in Figure 7, and the guide portion 210 is used to guide the cutting in the second direction. Referring to Figure 7, the upper plate 200 is rotated in the second direction by the rotation axis 220 fixed to one edge of the first main body portion 111, that is, one edge of the upper plate 200 rotates while being fixed to the edge of the first main body portion 111, and the rotation of the upper plate 200 causes the guide portion 210 to be positioned on the same vertical line as the cutting portion 130 of the first main body portion 111. Therefore, the upper plate 200 rotates to a position where the through hole in the guide portion 210 and the cut portion 130 of the first main body portion 111 are in communication with each other in the vertical direction, and the cutting means can be used to cut the test piece 10 in the radial direction, which is the second direction, along the guide portion 210 and the cut portion 130. Here, the cutting of the test piece 10 in the second direction can be a cutting in the second direction that starts from an end that has been cut in the first direction. More specifically, as shown in Figure 1, the test piece 10 can be cut to a predetermined length along the first direction in the central part of the test piece 10 by step c). Also, by step d), it can be cut to a predetermined length along the second direction in the radial direction perpendicular to the first direction at the end with the cut portion. Here, the cutting performed in step d) is not to cut the entire test piece 10 in the radial direction, but to cut only a part of it, and only about half of the test piece 10 can be cut.

[0052] The present invention features a multi-directional vise device 1000 that, once the test piece 10 has been cut by the method described above, is cut in a first direction including the welded portion 11 of the test piece 10, and then cut in a second direction perpendicular to the end of the cut in the first direction. As shown in Figure 1, this allows the test piece 10 to be opened between the cut portions for internal inspection, enabling inspection of the welded portion 11 of the test piece 10. Furthermore, once the quality of the weld is confirmed by the quality inspection of the welded portion 11 of the test piece 10 using the multi-directional vise device 1000 of the present invention, it is possible to instruct the subsequent welding of the test piece 10 to be performed automatically or manually under the same conditions.

[0053] The technical idea of ​​the present invention should not be interpreted as being limited to the embodiments described above. Needless to say, the scope of application is diverse, and various modifications can be made at the level of a person skilled in the art without departing from the spirit of the invention as claimed. Therefore, such improvements and modifications fall within the scope of protection of the present invention, insofar as they are obvious to a person skilled in the art. [Explanation of Symbols]

[0054] 10 test specimens 11 Welded section 1000 Multidirectional Vice Device 110 Main body 111 First main body 112 Second main body 120, 121, 122 Jig section 121a, 122a Weld groove 130 Cutting part 140 Compression section 150 Upper plate fixing part 200 Top plate 210 Guide section 220 Rotation axis 230 Stopper 231 Sliding groove 240 1st support surface 250 Second support surface

Claims

1. A multi-directional vise device for mounting and guiding a test specimen having length in one direction so that it can be cut in multiple directions, The first direction, which is the longitudinal direction of the test piece, is used as the reference axis, and the first main body and the second main body are arranged facing each other at a predetermined distance apart in a second direction perpendicular to it, In the first main body and the second main body, at least one jig portion is disposed in the portion where the test piece is housed, A compression unit for adjusting the distance between the first main body and the second main body, The structure includes an upper plate which houses both the first main body and the second main body and is positioned above, and which includes a guide portion with through holes formed on its inner side along the first direction, At least one of the first main body and the second main body includes a portion of the upper side that is cut in the second direction, The jig is divided into two parts by the aforementioned cutting portion. A multi-directional vise device characterized in that the upper plate includes a rotating shaft fixed together with either the first main body or the second main body, and the upper plate rotates with respect to the rotating shaft such that the guide portion moves from the first direction to the second direction.

2. The upper plate has a rectangular shape with a longer length in the first direction, The multi-directional vise device according to claim 1, characterized in that the rotating shaft is fixed at a position on the edge of the upper plate that is close to the center of the length of the upper plate, and at a predetermined portion of the edge of either the first main body or the second main body that includes the cut portion.

3. The aforementioned upper plate is The multi-directional vise device according to claim 1, further comprising a stopper having a length in the second direction and being formed to be movable in the first direction on the upper side of the upper plate.

4. The upper plate includes sliding grooves formed on both sides in the second direction, with a length along the first direction. The multi-directional vise device according to claim 3, characterized in that the stopper has both ends fixed to each sliding groove and slides on the upper plate.

5. One end of the upper plate is on the same line as one end of the first main body and the second main body, The aforementioned multi-directional vise device is, The multi-directional vise device according to claim 1, further comprising an upper plate fixing portion which is fixedly formed on one side of either the first main body portion or the second main body portion including the cut portion, and which fixes the position of the upper plate by bringing the first main body portion, the second main body portion and the side surface of the upper plate into contact with each other.

6. The multi-directional vise device according to claim 1, characterized in that the inner circumferential surface of the jig portion is formed along the outer circumferential edge of the test piece.

7. The test specimen includes a weld formed along the periphery in at least part of it, The multi-directional vise device according to claim 6, characterized in that the jig portion is formed to include a welding groove for accommodating the welded portion.

8. The multi-directional vise device according to claim 6, characterized in that the jig portion is detachable from the first main body portion and the second main body portion.

9. The multi-directional vise device according to claim 1, characterized in that the compression section has a cylinder structure.

10. A method for cutting a test piece in multiple directions using the multi-directional vise device described in claim 1, a) step of arranging the longitudinal direction of the test piece parallel to the first direction and placing the test piece on the jig, b) step, in which the compression section adjusts the distance between the first main body and the second main body to fix the test piece, c) step, in which the upper plate is rotated with respect to the rotation axis so that the guide portion of the upper plate is parallel to the first direction, and the cutting of the test piece in the first direction is guided, A method for cutting a multidirectional test piece using a multidirectional vise device, comprising step d) rotating the upper plate with respect to the rotation axis such that the guide portion of the upper plate is parallel to the second direction, thereby guiding the cutting of the test piece in the second direction.

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