Multi-directional vise device and method of cutting multi-directional 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 that can fix a test piece and then guide it in multiple directions to be cut when cutting the test piece in multiple directions, and a method for cutting a test piece in multiple directions using the same. [Background technology]

[0002] Depending on the purpose and needs of the test specimen, welding can be performed on a portion of the test specimen with a quality dimension. In order to perform welding according to the material and purpose of the test specimen, the desired welding results can be obtained by appropriately selecting and working on various requirements such as the welding method, welding equipment, welding position, welding materials, and welding environment, and subsequent mass production can be processed based on each selected variable.

[0003] Here, in welding work, quality inspection can be carried out after welding to confirm the quality of the partial weld through appropriate inspection and measurement, and a refinement process is required based on this. Generally, quality inspection includes visual inspection, non-destructive testing (NDT), heat treatment evaluation, and mechanical testing.

[0004] Among these, visual inspection is the most intuitive, easy, and convenient inspection method, which directly checks the welded area for surface defects, uneven welding, cracks, or welding abnormalities. When visually inspecting a welded area inside a test piece, if the diameter of the test piece is large, the inspection can be performed by directly viewing the interior. However, if the diameter of the test piece is small, it is difficult to directly inspect the interior, and the weld or its surrounding area must be cut. Here, in order to cut the welded area inside the test piece enough to inspect it, at least a portion of the test piece must be opened, which requires cutting the test piece at least vertically and horizontally so that a portion of the test piece can be opened.

[0005] However, conventional devices that can assist in cutting while fixing a test specimen have limitations in stably fixing the test specimen. In particular, for pipe-shaped test specimens with circular outer surfaces, it is difficult to cut the test specimen accurately unless the test specimen is stably and firmly fixed. For example, the test specimen is fixed using a clamp or other means and then the required portion is cut using a saw. However, the force and vibration generated by the saw are not effectively controlled with existing fixing devices, limiting precise cutting. Furthermore, when cutting in multiple directions is required, conventional fixing means require the operator to fix the test specimen in one position and simply change the direction of the saw to perform the cutting. This makes it difficult to maintain the exact dimensions and shape of the welded portion of the test specimen, making it difficult to ensure stability and accuracy of the welded portion, limiting precise cutting. Furthermore, the manual cutting method using a hacksaw is time-consuming. Summary of the Invention [Problem to be solved by the invention]

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

[0007] In addition, when a test piece that needs to be cut is cut manually using an electric tool such as a jigsaw, the multi-directional vise device of the present invention aims to provide a vise device that can more firmly fix the test piece and more precisely guide it to the position where cutting is required. [Means for solving the problem]

[0008] In order to solve the above-mentioned problems, one embodiment of the present invention provides a multi-directional vise device that places and guides a test piece having a length in one direction so that it can be cut in multiple directions, and includes a first body portion and a second body portion that are arranged opposite each other at a predetermined distance in a second direction perpendicular to the first direction, which is the longitudinal direction of the test piece, as the reference axis, at least one jig portion that is arranged in the portion of the first body portion and the second body portion where the test piece is accommodated, and a compression portion that adjusts the distance between the first body portion and the second body portion, and is characterized in that at least one of the first body portion and the second body portion includes a cutting portion in at least an upper portion in the second direction.

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

[0010] The multi-directional vise device further includes an upper plate that accommodates both the first body portion and the second body portion, is positioned on the upper side, and includes a guide portion having a through hole formed on the inside along the first direction.

[0011] The upper plate includes a rotation axis fixed together with the main body, and the upper plate rotates in a first direction or a second direction based on the rotation axis.

[0012] Here, the upper plate is rectangular in shape with a longer length in the first direction, and the rotation axis is fixed to both a position on the edge of the upper plate near the center of the length of the upper plate and a predetermined portion on the edge of the main body including the cutting portion.

[0013] The upper plate has a length in the second direction and further includes a stopper formed on an upper side of the upper plate so as to be movable in the first direction.

[0014] Here, the upper plate includes sliding grooves formed on both side surfaces facing the second direction, the length of which is along the first direction, and the stopper has both ends fixed to each sliding groove and slides on the upper plate.

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

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

[0017] Here, the test piece includes a welded portion formed along at least a portion of the periphery, and the jig portion is characterized by being formed to include a weld groove for accommodating the welded portion.

[0018] The jig part is also characterized in that it is detachable from the main body part.

[0019] The compression section is characterized by having a cylindrical structure.

[0020] A method for cutting a multidirectional test piece using the multidirectional vise device of the present invention to cut a test piece in multiple directions includes the steps of: a) arranging the longitudinal direction of the test piece parallel to a first direction and placing the test piece on the jig section; b) adjusting the distance between the first main body section and the second main body section using the compression section to fix the test piece; c) rotating the upper plate so that the guide section of the upper plate is parallel to the first direction based on the rotation axis, thereby guiding the cutting of the test piece in the first direction; and d) rotating the upper plate so that the guide section of the upper plate is parallel to the second direction based on the rotation axis, thereby guiding the cutting of the test piece in the second direction. [Effects of the Invention]

[0021] The multi-directional vise device of the present invention, configured as described above, and the method for cutting multi-directional test pieces using the same, are vise devices that can accurately and easily assist in the cutting position of at least the test piece in the longitudinal direction and in the direction perpendicular thereto.By forming the jig portion to be replaceable, the test piece can be firmly fixed without being restricted by the external shape of the test piece.A pair of main body portions are formed to face each other based on the longitudinal direction, and the characteristics of the main body portions are used to guide cutting in the longitudinal direction, and by including a cutting portion in part of the main body portions, cutting can also be guided in the vertical direction.By guiding cutting in multiple directions while fixing the test piece in one position, the device more accurately and precisely assists in the cutting operation of the test piece. [Brief explanation of the drawings]

[0022] [Figure 1] FIG. 1 is a perspective view of a partially cut test piece according to one embodiment. [Figure 2] 1 is a perspective view of a multi-directional vise apparatus and a test specimen according to one embodiment. [Figure 3] FIG. 1 is a rear perspective view of a multi-directional vise device according to one embodiment. [Figure 4] FIG. 1 is a plan view of a multi-directional vise device according to one embodiment. [Figure 5] 1 is a perspective view of a multi-directional vise device in which an upper plate according to one embodiment is positioned in a first direction and a test piece is fixed. [Figure 6] 1 is a front view of a multi-directional vise device in which an upper plate is positioned in a first direction and a test piece is fixed, according to one embodiment. [Figure 7] FIG. 10 is a perspective view of a multi-directional vise device in which the upper plate is positioned in a second direction and a test piece is secured, according to one embodiment. [Figure 8] FIG. 1 is a perspective view of a multi-directional vise device with a test specimen clamped thereon and a stopper on the top plate moved, according to one embodiment. [Figure 9] 1 is a perspective view of a multi-directional vise device with a cutting tool secured thereto according to one embodiment; DETAILED DESCRIPTION OF THE INVENTION

[0023] The above-described objects, features, and advantages of the present invention will become more apparent with reference to the following embodiments in conjunction with the accompanying drawings. The following specific structural or functional descriptions are merely illustrative for purposes of describing embodiments according to the inventive concept. The embodiments according to the inventive concept may be embodied in various forms and should not be construed as being limited to the embodiments described in this specification or application. Because the embodiments according to the inventive concept may be modified in various ways and have various forms, specific embodiments are illustrated in the drawings and described in detail in this specification or application. However, this does not limit the embodiments according to the inventive concept to the specific disclosed form, but should be understood to include all modifications, equivalents, or alternatives within the spirit and technical scope of the present invention. Terms such as "first" and "second" may be used to describe various components, but the components are not limited to these terms. The terms are used solely to distinguish one component from another; for example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the scope of the inventive concept. When a component is referred to as being connected or coupled to another component, it should be understood that the component may be directly connected or coupled to the other component, but that there may be other components in between. On the other hand, when a component is referred to as being directly connected or coupled to another component, it should be understood that there are no other components in between. Other expressions describing the relationship between components, such as "between," "immediately between or adjacent to," "directly adjacent to," etc., should be interpreted similarly. The terms used herein are merely used to describe specific embodiments and are not intended to limit the present invention. The singular expressions include the plural expressions unless the context clearly dictates otherwise.As used herein, terms such as "comprise" or "have" are intended to specify the presence of a stated feature, numeral, step, operation, component, part, or combination thereof, and should not be understood to preclude the presence or addition of one or more other features, numerals, steps, operations, components, parts, or combinations thereof. Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms as defined in commonly used dictionaries should be interpreted as having a meaning consistent with the context of the relevant art and should not be interpreted in an idealized or overly formal sense unless expressly defined herein. The present invention will now be described in detail by describing preferred embodiments of the present invention with reference to the accompanying drawings. The same reference numerals in the various drawings refer to the same elements.

[0024] The present invention is characterized as a multi-directional vise device 1000 that can be used to cut a portion of a test piece 10 having a length in one direction as needed, and that can firmly fix the test piece 10 after placing it thereon, regardless of the size, outer shape, or type of the test piece 10, and can guide the fixed test piece 10 to cut in multiple directions. Here, as an embodiment of the present invention, the multi-directional vise device 1000 of the present invention can be used to inspect welding performed on a pipe-shaped test piece 10, and is characterized as a device that can pick up and fix the test piece 10 and guide the cutting position in multiple directions when cutting a portion of the test piece 10 in multiple directions to check the internal welding condition, especially when the diameter of the test piece 10 is small and it is difficult to check the inside of the test piece 10.

[0025] Referring to FIG. 1 , the test piece 10 of the present invention may be a long pipe having a predetermined length and including a weld 11 welded along its periphery at a predetermined portion. Furthermore, the test piece 10 can be cut longitudinally and perpendicularly to inspect the interior so that the condition of the weld 11 of the test piece 10 can be confirmed. While there are various methods for cutting the test piece 10 so that the interior can be inspected, the present invention simplifies the method by first cutting a portion of the test piece 10 along the longitudinal direction, including the weld 11, and then cutting a portion of the cross section of the test piece 10 radially at one end of the cut end, thereby cutting the test piece 10 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 defined as a first direction, and the radial direction, which is perpendicular to the longitudinal direction, is defined as a second direction. Therefore, the multi-directional vise device 1000 of the present invention is characterized by being an apparatus that can guide the cutting of the test piece 10 in the first and second directions while holding the test piece 10.

[0026] Therefore, referring to Figures 2 to 4, a multi-directional vise device 1000 for placing and guiding a test piece 10 having a length in one direction so that it can be cut in multiple directions includes a first body portion 111 and a second body portion 112 which are arranged opposite each other at a predetermined distance in a second direction perpendicular to the first direction, which is the longitudinal direction of the test piece 10, as the reference axis, at least one jig portion 120 which is arranged in the portion of the first body portion 111 and the second body portion 112 where the test piece 10 is accommodated, and a compression portion 140 which adjusts the distance between the first body portion 111 and the second body portion 112, and it is preferable that at least one of the first body portion 111 and the second body portion 112 includes a cutting portion 130 in at least a portion of the upper side in the second direction.

[0027] The present invention includes a body portion 110 on which a test strip 10 can be placed and fixed. Here, in the present invention, the body portion 110 can be divided into at least two parts, and the pair of body portions 110 can be configured to contact both ends of the test strip 10 and tighten to place and fix the test strip 10. Accordingly, the present invention is characterized in that the body portion 110 is configured with a first body portion 111 and a second body portion 112, and the first body portion 111 and the second body portion 112 are arranged facing each other at a predetermined distance in a direction perpendicular to the longitudinal direction of the test strip 10. Here, the first body portion 111 and the second body portion 112 can be formed to have corresponding sizes and shapes. As a result, the test strip 10 is positioned between the first body portion 111 and the second body portion 112, and the distance between the first body portion 111 and the second body portion 112 is adjusted by the compression portion 140, allowing the test strip 10 to be fixed by wrapping around the periphery of the test strip 10.

[0028] Explaining in more detail with reference to FIGS. 1 to 4, the first body portion 111 and the second body portion 112 are disposed on both sides in the second direction, spaced apart from each other by a predetermined distance, so as to accommodate a portion of the periphery of the test piece 10. That is, the first body portion 111 and the second body portion 112 are disposed facing each other in the second direction, with the first direction as the reference. As a result, the body portion 110 can guide the cutting of the test piece 10 in the first direction while simply fixing the test piece 10. The first body portion 111 and the second body portion 112 each have 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. In other words, a long test piece 10 can be placed in a manner such that a portion of its length is accommodated within each body portion. As a result, each of the first body portion 111 and the second body portion 112 accommodates a portion of the periphery of the test piece 10. The first body portion 111 and the second body portion 112 are characterized in that the distance therebetween is adjusted by shortening or lengthening the distance therebetween in each second direction by the compression portion 140.

[0029] The main body 110 also includes a jig portion 120 that directly grips the outer periphery of the test strip 10. The jig portion 120 is formed at a position in the main body 110 where the test strip 10 needs to be accommodated, and multiple jig portions 120 may be formed as needed to more stably secure the test strip 10. Referring to FIGS. 2 and 3, the first main body 111 and the second main body 112 preferably each include at least one jig portion 121, 122. Here, the jig portions 121, 122 may be formed at adjacent positions within the main body 110 and may be disposed at the upper end of the main body 110 to facilitate cutting of the test strip 10. That is, the jig portions 120 are preferably formed at the same position where the first main body 111 and the second main body 112 abut each other at the inner upper ends facing each other.

[0030] The inner peripheral surface of the jig portion 120 may be formed along the outer peripheral edge of the test specimen 10. The inner peripheral surface of the jig portion 120 is the portion that directly accommodates the test specimen 10, and the jig portion 120 may be formed in various shapes on the inner peripheral surface as needed or depending on the type of test specimen 10. The jig portion 120 is preferably formed from a material that easily secures the test specimen 10. For example, the jig portion 120 may be formed from an elastic material so that it can actively accommodate the size and shape of the test specimen 10. The jig portion 120 may be formed to be detachable from the main body portion 110. This allows various types of test specimens 10 to be accommodated by replacing the main body portion 110 with jig portions 120 having various inner peripheral shapes as needed. The main body 110 of the present invention may include multiple jig portions 120. Here, the jig portions 120 may have different inner peripheral surface shapes, or all jig portions 120 may be arranged with the same inner peripheral surface shape to facilitate fabrication. As an example, the jig portion 120 may have a triangular groove formed on a portion of its inner peripheral surface so that it can be used universally depending on the outer shape of the test piece 10. Furthermore, the jig portion 120 may have the same shape as the outer peripheral edge of the test piece 10. If the test piece 10 is pipe-shaped, the jig portion 120 may include a semicircular inner peripheral surface. Here, the jig portion 120 may be configured to various sizes depending on the size of the semicircular radius of the inner peripheral portion of the jig portion 120, allowing the jig portion 120 to be interchangeable and used as needed.

[0031] According to one embodiment of the present invention, the multi-directional vise device 1000 is a device that assists in cutting a test piece 10 to inspect the internal welding condition thereof. The test piece 10 may include a weld 11 formed at least partially along the outer diameter. As shown in FIG. 1, the weld 11 may be configured to partially protrude outward from the test piece 10. As shown in FIGS. 2 and 3, the jig parts 121 and 122 of the present invention may further include weld grooves 121a and 122a on their inner circumferential surfaces to accommodate the weld 11 and support the test piece 10. Therefore, the jig parts 121 and 122 may have recessed weld grooves 121a and 122a on their inner circumferential surfaces. This allows the weld 11 of the test piece 10 to escape into the weld grooves 121a and 122a when the test piece 10 is placed on the jig parts 121 and 122, resulting in a more stable fixation.

[0032] The compression unit 140 adjusts the distance between the first body unit 111 and the second body unit 112, which are spaced apart from each other, and can adjust the distance between the first body unit 111 and the second body unit 112 to shorten or lengthen it. That is, the compression unit 140 is characterized by moving the body unit in the second direction. The compression unit 140 can be configured without limitation as long as it is a device that can adjust the distance between the body units 111 and 112. Referring to FIGS. 2 to 4, in one embodiment of the present invention, the compression unit 140 can be configured with a cylinder structure. Accordingly, the compression unit 140 can be configured such that at least one guide rod is disposed penetrating both the first body unit 111 and the second body unit 112, and one of the first body unit 111 and the second body unit 112 reciprocates toward the other body unit due to a driving force. Here, the first body unit 111 can reciprocate toward the second body unit 112. In addition, the second main body portion 112 includes a compression handle 141, and the first main body portion 111 moves back and forth by rotating the compression handle 141, and the spacing between the main body portions is adjusted, thereby driving the compression portion 140.

[0033] In the main body portion 110 of the present invention, the first main body portion 111 and the second main body portion 112 are positioned apart from each other in the second direction with respect to the first direction. When the compression portion 140 subsequently shortens the distance between the first main body portion 111 and the second main body portion 112 to secure the test piece 10, the distance between the first main body portion 111 and the second main body portion 112 forms a predetermined distance in the first direction, along which the cutting of the test piece 10 in the first direction can be guided. 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 in the second direction, thereby guiding the cutting of the test piece 10 in the second direction. Here, the cutting portion 130 is preferably formed in at least a portion of the upper end of the main body portion, or the cutting portion 130 may divide a main body portion into two. However, to ensure smooth movement by the compression unit 140, it is preferable that the main body 110 including the cutting unit 130 only includes a portion of the cutting unit 130, with the compression unit 140 connected to the integrated portion, allowing the main body 110 to move simultaneously. The cutting unit 130 is preferably formed by cutting at least a portion of the area of the upper end of the main body 110, and in this case, the entire area is preferably cut in the second direction. The cutting unit 130 may be formed in the center of the area of the main body 110 in the first direction, and the extent of the cutting unit 130 is preferably such that a cutting blade for cutting the test specimen 10 can be inserted sufficiently.

[0034] 2 to 4, the first body portion 111 may include a cut portion 130 formed by cutting a portion of the upper end in the second direction. As a result, when the multi-directional vise device 1000 of the present invention is viewed from above, the first body portion 111 and the second body portion 112 are arranged facing each other and have corresponding sizes. The first body portion 111 may be divided into two parts, based on the cut portion 130, compared to the second body portion 112. That is, the body portion 110 of the present invention may be divided into three parts, each divided into three parts by a distance in the first direction and a distance in 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 cutting the test piece 10 longitudinally, and in a second direction, which is cutting the test piece 10 radially, according to the divided positions. Here, in the multi-directional vise device 1000, the length of the gap formed in the first direction may be longer than the length of the cutting portion 130 in the second direction depending on the size of each main body portion 110.

[0035] 4, the upper portion of the first body 111 is divided into two by the cut portion 130, and therefore the jig portion 121 disposed above the body 111 may also be divided into two. That is, the present invention preferably includes at least three jig portions 121 and 122. The first body 111 preferably includes the cut portion 130 at least in the portion where the jig portion 121 is located, and the first body 111 may have the jig portions 121 disposed on both sides of the cut portion 130. Here, the second body 112 may have a shape in which the jig portion 122 has a length along its width, and may be configured with a plurality of jig portions as necessary. In one embodiment of the present invention, the jig portions 121 and 122 are configured as four of the same shape, and one pair may be configured as two parts of each first body 111 (121), and the other pair may be arranged in the second body 112 so as to face each other at positions corresponding to the jig portions of the first body 111 (122).

[0036] 5 and 6, the multi-directional vise device 1000 preferably further includes an upper plate 200 that accommodates both the first body portion 111 and the second body portion 112 and is disposed above the first body portion 111. The upper plate 200 preferably includes a guide portion 210 having a through-hole formed therein along the first direction. Here, the upper plate 200 is preferably disposed 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 to the extent that the first body portion 111 and the second body portion 112 are spaced closely apart. FIG. 5 is a perspective view of the multi-directional vise device 1000 in which the upper plate 200 is disposed in the first direction. The guide portion 210 has a through-hole formed in a portion of the area of the upper plate 200 along the gap in the first direction formed by the gap between the first body portion 111 and the second body portion 112. That is, the guide portion 210 is characterized by having a through hole extending in a direction parallel to the gap between the first body portion 111 and the second body portion 112, at a position that allows the guide portion 210 to be arranged coaxially with the gap between the first body portion 111 and the second body portion 112 when the first body portion 111 and the second body portion 112 are adjacently arranged by the compression portion 140. 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 may be arranged toward the center 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 have a cross shape having lengths in both the first and second directions. Here, the through hole formed in the second direction is preferably formed to correspond to the cutting portion 130.

[0037] The upper plate 200 of the present invention is characterized in that it is movably disposed above the main body 110. Here, referring to Figures 5 and 7, the upper plate 200 is characterized in that the guide portion 210 formed in the first direction can be rotated at least 90 degrees and moved so that the guide portion 210 is disposed horizontally along the second direction. The upper plate 200 of the present invention is characterized in that it includes a rotation shaft 220 fixed together with the main body 110, and the upper plate 200 rotates in the first direction or the second direction based on the rotation shaft 220.

[0038] The rotation shaft 220 is fixedly formed to penetrate the upper plate 200 and the main body 110, and is characterized in that the upper plate 200 is formed to be rotatable. That is, the rotation shaft 220 is configured to fix the upper plate 200 to the main body 110 and to allow the upper plate 200 to rotate at the upper end of the main body 110 based on the rotation shaft 220. FIG. 5 is a perspective view of the multi-directional vise device 1000 in a state where the upper plate 200 is rotated in a first direction, and FIG. 7 is a perspective view of the multi-directional vise device 1000 in a state where the upper plate 200 is rotated in a second direction. Referring to FIGS. 5 and 7, when the upper plate 200 is first arranged with the guide unit 210 parallel to the first direction, the upper plate 200 can be rotated in the second direction by the rotation shaft 220, and the guide unit 210 can be rotated in a direction parallel to the second direction.

[0039] The upper plate 200 may have a rectangular shape with a longer length in the first direction, and the rotation shaft 220 may be fixed to both an edge of the upper plate 200 near a center of the length of the upper plate 200 and a predetermined portion of an edge of the main body portion 110 including the cutting portion 130. Describing this in more detail with reference to FIG. 5 , the upper plate 200 may have a rectangular shape with a width large enough to accommodate the first main body portion 111 and the second main body portion 112, and with a longer length in the first direction. When the upper plate 200 is positioned with its length directed in the first direction, one end of the upper plate 200 may be positioned with its basic position being in line with one end of the main body portion 110. That is, as shown in FIG. 5 , the basic position of the upper plate 200 may be such that one end of the upper plate 200 and one end of the main body portion 110 are in line with each other, and the other end of the upper plate 200 protrudes beyond the other end of the main body portion 110. Furthermore, the rotation shaft 220 may be fixed to the body portion 110 including the cutout portion 130 of the first body portion 111 and the second body portion 112, where the first body portion 111 may include the cutout portion 130. Based on the basic position of the upper plate 200, the rotation shaft 220 is disposed on the edge of the first body portion 111 side, which is on the same vertical line as the first body portion 111, on both sides of the area of the upper plate 200 in the second direction. In this case, the center portion of the length of the upper plate 200 may be fixed and disposed. Therefore, when the rotation shaft is formed penetrating both the upper plate 200 and the body portion 110, it may be disposed on the other side edge of the first body portion 111 on the upper plate 200, or may be disposed on the upper plate 200 at the center of the edge of the first body portion 111 side, depending on the basic position of the upper plate 200. As a result, the upper plate 200 is characterized by rotating in a first direction or a second direction based on the rotation shaft 220, with the edge of the upper plate 200 being fixed.

[0040] 5, one end of the upper plate 200 can be aligned with one end of the first body portion 111 and the second body portion 112. This allows the test piece 10 to be inserted into the multi-directional vise device 1000 and one end of the multi-directional vise device 1000 to assist in cutting one end of the test piece 10 when it is necessary to cut the length of the test piece 10 depending on the process of the test piece 10.

[0041] The upper plate 200 of the present invention is characterized by rotating while being partially fixed to the 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 is characterized by further including an upper plate fixing part 150 that can fix the position of the upper plate 200 by bringing one side of the body 110 and one side of the upper plate 200 into contact with each other. Referring to FIGS. 5 to 7, the upper plate fixing part 150 is preferably disposed at the upper end portion of the body 110 so that the upper plate 200 and the body 110 can easily contact each other. The upper plate fixing part 150 may be formed in a block shape having a predetermined length, and one end of the block may be fixed by contacting one side of the body 110 when the block is perpendicular to the ground. Here, the upper plate fixing part 150 may further include a rotation shaft 220, and one end of the upper plate fixing part 150 may be fixed by the rotation shaft 220 and the other end of the block may be freely rotatable. Here, one end of the upper plate fixing part 150 may be a part facing downward toward the main body part 110. In addition, the other end of the upper plate fixing part 150 may be disposed so as to protrude upward toward the main body part 110. Therefore, the lower end of the upper plate fixing part 150 is fixed by contacting the side surface of the main body part 110 via the rotation shaft 220, and the part of the upper end of the upper plate fixing part 150 protruding from the main body part 110 is fixed to the side surface of the upper plate 200, thereby fixing the position of the upper plate 200. Here, the upper plate fixing part 150 may be formed and fixed vertically to one side surface of the first main body part 111 according to the basic position of the upper plate 200.

[0042] 5 and 8, the upper plate 200 preferably has a length in the second direction and further includes a stopper 230 formed on the upper side of the upper plate 200 to be movable in the first direction. Here, the stopper 230 is for adjusting the length of the guide unit 210 and is preferably provided on the upper plate 200 such that its length is disposed in a direction perpendicular to the length of the guide unit 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 in that the stopper 230 moves in the first direction on the upper plate 200. With reference to the basic position of the upper plate 200, when the longitudinal direction of the upper plate 200 is disposed in the first direction, the stopper 230 having a length in the 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 the multi-directional vise device 1000 in which the upper plate 200 is placed in a basic position and the stopper 230 is moved on the upper plate 200 as needed. As shown in Figure 8, the length of the guide portion 210 perpendicular to the length of the stopper 230 can be limited depending on the position of the stopper 230.

[0043] The stopper 230 is characterized by being formed so as to be freely movable along the length of the upper plate 200 within the upper plate 200. Here, any means that can freely move on the upper plate 200 can be used as the stopper 230. As an embodiment of the present invention, referring to FIGS. 7 and 8, the upper plate 200 may include sliding grooves 231 formed on both sides facing the second direction and having a length along the first direction, and both ends of the stopper 230 may be configured to be fixed to each sliding groove 231. As a result, the present invention is characterized by being configured so that the stopper 230 is slidably moved on the upper plate 200. When the upper plate 200 is positioned in a basic position, the length of the upper plate 200 is aligned in a first direction. Therefore, slide grooves 231 are recessed along the length of the upper plate 200 on the side surfaces of both ends in the width direction of the upper plate 200. Therefore, both ends of the stopper 230 in the longitudinal direction are inserted into the slide grooves 231 and slide within the slide grooves 231, thereby adjusting the position of the stopper 230 on the upper plate 200. A bolt may be included at either end of the stopper 230, and the position of the stopper 230 on the upper plate 200 may be fixed by tightening the bolt toward the slide groove 231. When the test specimen is long, the stopper 230 can be used as a support surface for a power tool.

[0044] 7 and 9, the multi-directional vise device 1000 of the present invention can fix a test piece to the main body 110 and then cut the test piece along the guide unit 210 using a cutting tool 20, such as a power tool. Here, in order for the cutting tool 20 to perform precise cutting, the upper plate of the multi-directional vise device 1000 includes a first support surface 240 that can support a portion 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 disposed along a corner of the upper plate 200 where the rotation shaft 220 is formed, and the height of a side surface of the block can form the first support surface 240. The support surface 240 can be moved along the guide unit 210 with a portion of the cutting tool 20 abutting against it, thereby closely supporting a portion of the cutting tool 20. As a result, even when vibrations are generated during operation of the cutting tool 20, a portion of the cutting tool 20 is tightly supported on the first support surface 240, allowing the cutting tool 20 to work along the first support surface 240, thereby enabling precise cutting. Also, referring to FIG. 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 against which a portion of the cutting tool 20 abuts and is tightly supported. As shown in FIG. 9, when the stopper 230 is positioned at one end of the multi-directional vise device 1000, the second support surface 250 can tightly support the power tool 20 to cut the length of the test piece 20.

[0045] Here, the present invention is characterized in that a multi-directional vise device 1000 including the above-mentioned features can be used to guide cutting in multiple directions while the test piece 10 to be cut is fixed to the vise device.

[0046] Thus, in the method for cutting a multidirectional test piece 10, which can cut the test piece 10 in multiple directions using the multidirectional vise device 1000 of the present invention, the method can include the steps of: a) placing the test piece 10 on the jig portion 120 with the longitudinal direction of the test piece 10 parallel to the first direction; b) using the compression portion 140 to adjust the distance between the first main body portion 111 and the second main body portion 112 to fix the test piece 10; c) rotating the upper plate 200 based on the rotation axis 220 so that the guide portion 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 based on the rotation axis 220 so that the guide portion 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 FIG. 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. In step a), the longitudinal direction of the test piece 10 is aligned parallel to the first direction, and then the test piece 10 is arranged between the first body portion 111 and the second body portion 112 and placed on the jig portion 120. Here, since there is a gap between the first body portion 111 and the second body portion 112, step a) can be performed by first placing the test piece 10 on the jig portion 120 on either side of the first body portion 111 or the second body portion 112. In step a), the test piece 10 is preferably placed on the multi-directional vise device 1000 in a state in which the length of the guide portion 210 of the upper plate 200 faces the first direction.

[0048] 5, step b) can be performed in which the compression unit 140 narrows the gap between the first body unit 111 and the second body unit 112 and fixes the test piece 10. The compression unit 140 can narrow or widen the gap between the first body unit 111 and the second body unit 112, and the compression unit 140 adjusts the position of the pair of body units toward the test piece 10 placed on the jig units 121 and 122, narrowing the gap between the first body unit 111 and the second body unit 112 to an extent that the test piece 10 is crimped, and the test piece 10 can be fixed between the body units while applying pressure to the test piece 10.

[0049] Furthermore, step c) can be performed to guide the fixed test piece 10 in cutting in the first direction using the distance between the first body portion 111 and the second body portion 112. Here, in step c), the cutting guidance in the first direction can be performed by the guide portion 210 of the upper plate 200. Therefore, it is preferable that the upper plate 200 is in a reference position where the guide portion 210 is aligned along the first direction, as shown in FIG. 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 around the rotation axis 220 and aligning it to the reference position. Then, using a cutting tool, the test piece 10 can be cut in the longitudinal direction, which is the first direction, following the guide portion 210. Here, the test piece 10 can be cut in the first direction to a predetermined length as needed, preferably within the length of the guide portion 210. Furthermore, as shown in FIG. 8 , the stopper 230 of the upper plate 200 can be moved to limit the cutting length depending on the desired cutting length. Here, it is preferable that the portion of the test piece 10 cut in the first direction includes at least the welded portion 11 of the test piece 10. That is, the present invention is intended to confirm the welded portion 11 on the inside of the test piece 10, and it is preferable to cut the portion including the welded portion 11 in the first direction first.

[0050] Here, before performing step c), if the length of the test specimen 10 is unnecessarily long, step c) can be performed after first cutting the length of the test specimen 10 to facilitate the process. This can be done by using one end of the test specimen 10 fixed to the multi-directional vise 1000 where the upper plate 200 and the main body 110 are aligned in the longitudinal direction, and then cutting one end of the test specimen 10 that protrudes outside the main body 110 to align it with one end of the multi-directional vise 1000. Here, if it is necessary to cut both ends of the test specimen 10, after cutting one end of the test specimen 10, the test specimen 10 can be rotated in the opposite direction in the multi-directional vise 1000 so that the other end of the test specimen 10 is aligned with one end of the multi-directional vise 1000, and then the other end of the test specimen 10 that has not been cut can be cut. Furthermore, cutting the length of the test specimen 10 can be performed before step a) or selectively between steps as needed.

[0051] Furthermore, once the test piece 10 has been cut in the first direction, step d) can be performed by rotating the upper plate 200 in a second direction based on the rotation axis 220 so that the guide unit 210 is positioned parallel to the second direction. In step d), the upper plate 200, which has been rotated in the first direction as shown in FIG. 5 in step c), is rotated in the second direction as shown in FIG. 7 to guide the cutting in the second direction using the guide unit 210. Referring to FIG. 7, the upper plate 200 rotates in the second direction about the rotation axis 220 fixed to one edge of the first body unit 111. That is, one edge of the upper plate 200 rotates while being fixed to the edge of the first body unit 111, and the rotation of the upper plate 200 positions the guide unit 210 on the same vertical line as the cutting portion 130 of the first body unit 111. Therefore, the upper plate 200 rotates to a position where the through hole of the guide portion 210 and the cutting portion 130 of the first body portion 111 communicate with each other in the vertical direction, and the cutting means can be used to cut the test piece 10 in the second direction, i.e., the radial direction, along the guide portion 210 and the cutting portion 130. Here, the cutting of the test piece 10 in the second direction can be a cut in the second direction starting from an end portion of the test piece 10 cut in the first direction. More specifically, as shown in FIG. 1 , the test piece 10 can be cut to a predetermined length along the first direction at the center of the test piece 10 in step c). Furthermore, the test piece 10 can be cut to a predetermined length along the second direction, in the radial direction perpendicular to the first direction, at an end portion of the cutting portion in step d). Here, the cutting performed in step d) does not cut the entire test piece 10 in the radial direction, but rather a partial cut, and can cut approximately half of the test piece 10.

[0052] The test piece 10 cut by the above method is cut in a first direction including the welded portion 11 of the test piece 10, and then cut only a portion of the test piece 10 from the end of the cut in the first direction in a second direction perpendicular to the first cut. As shown in Fig. 1, the test piece 10 can be opened between the cut portions to check the interior and inspect the welded portion 11 of the test piece 10. Furthermore, once the quality of the weld is confirmed in the quality inspection of the welded portion 11 of the test piece 10 using the multi-directional vise device 1000 of the present invention, a command can be given to perform subsequent welding of the test piece 10 automatically or manually under the same conditions.

[0053] The technical concept of the present invention should not be construed as being limited to the above-described embodiments. Needless to say, the scope of application is diverse, and various modifications may be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. Therefore, such improvements and modifications, as long as they are obvious to those skilled in the art, fall within the scope of protection of the present invention. [Explanation of symbols]

[0054] 10 test specimens 11 Welded parts 1000 Multi-directional vise device 110 Main body 111 First main body part 112 Second main body part 120, 121, 122 Jig section 121a, 122a Welding groove 130 Cutting part 140 Compression section 150 Upper plate fixing part 200 Upper Plate 210 Guide section 220 Rotational Axis 230 Stopper 231 Sliding groove 240 1st support surface 250 Second support surface

Claims

1. A multi-directional vise device for placing and guiding a test piece having a length in one direction so that the test piece can be cut in multiple directions, a first body portion and a second body portion that are arranged opposite to each other at a predetermined interval in a second direction perpendicular to a first direction that is a longitudinal direction of the test piece; At least one jig portion is disposed in each of the first body portion and the second body portion in a portion where the test piece is accommodated; a compression portion that adjusts the distance between the first body portion and the second body portion, A multi-directional vise device, wherein at least one of the first body portion and the second body portion includes a cutting portion in the second direction on at least a portion of an upper side thereof.

2. the first body portion includes the cutting portion, The multi-directional vise device according to claim 1, wherein the jig part is divided into two parts by the cut portion.

3. The multi-directional vise device is 2. The multi-directional vise device according to claim 1, further comprising an upper plate that accommodates both the first body portion and the second body portion, is disposed on the upper side, and includes a guide portion having a through hole formed inside along the first direction.

4. the upper plate includes a rotation axis fixed together with the main body portion; The multi-directional vise device according to claim 3 , wherein the upper plate rotates in the first direction or the second direction around the rotation axis.

5. The upper plate has a rectangular shape with a longer length in the first direction, The multi-directional vise device of claim 4, characterized in that the rotation axis is fixed at a position on the edge of the upper plate near the center of the length of the upper plate and at a predetermined portion on the edge of the main body portion including the cutting portion.

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

7. the upper plate includes slide grooves formed on both sides facing the second direction and having a length along the first direction, 7. The multi-directional vise device according to claim 6, wherein both ends of the stopper are fixed to the slide grooves, and the stopper slides on the upper plate.

8. one end of the upper plate is on the same line as one end of the first body portion and one end of the second body portion; The multi-directional vise device is 4. The multi-directional vise device according to claim 3, further comprising an upper plate fixing part fixedly formed on one side of the main body part including the cutting portion, and fixing the position of the upper plate by bringing the main body part and a side of the upper plate into contact with each other.

9. The multi-directional vise device according to claim 1 , wherein the jig portion has an inner peripheral surface formed along an outer peripheral edge of the test piece.

10. the test specimen includes a weld formed along at least a portion of a periphery; The multi-directional vise device according to claim 9, wherein the jig portion is formed to include a welding groove for accommodating the welding portion.

11. The multi-directional vise device according to claim 9, wherein the jig part is detachable from the main body part.

12. The multi-directional vise device according to claim 1 , wherein the compression section has a cylindrical structure.

13. 4. A method for cutting the test piece in multiple directions using the multi-directional vise apparatus of claim 3, comprising: a) placing the test piece on the jig portion with the longitudinal direction of the test piece arranged parallel to the first direction; b) adjusting the distance between the first body portion and the second body portion by the compression portion to fix the test piece; c) rotating the upper plate with respect to the rotation axis so that a guide portion of the upper plate is parallel to the first direction, thereby guiding cutting of the test piece in the first direction; and (d) step d) of rotating the upper plate based on the rotation axis so 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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