KR100566119B1 - Cutting line marking jig for h beam - Google Patents

Abstract

The present invention relates to a H-shaped steel cutting line marking jig can easily mark the cutting line for the longitudinal cutting of the H-shaped steel, H-shaped steel cutting line capable of deformation according to various sizes of the steel It is about a marking jig.

The construction of the present invention for this purpose is a first vertical guide rail in close contact with the outer side of the flange of the H-shaped steel to set the cutting line of the one flange; A second vertical guide rail positioned on the web surface of the H-shaped steel; A third vertical guide rail which is in close contact with the outer side of the other flange and sets a cutting line of the other flange; A horizontal guide rail fixed to a position where one flange is formed and extending to the other flange; Marking means fastened to one end of the second vertical guide rail; A first rail support part which is supported by the groove formed in the first vertical guide rail so as to be movable, and which fixes the horizontal guide rail; A second rail support part which is compliant with the horizontal guide rail and is movable left and right and supports the second vertical guide rail; And a third rail support part supporting the third vertical guide rail so as to be movable and supporting the horizontal guide rail.

H-shaped steel, cutting line marking

Description

Cutting line marking jig for H beam

1 is a perspective view showing a cutting line marking jig H-shaped steel according to the present invention,

Figure 2 is a plan view showing a cutting line marking jig H-shaped steel according to the present invention

3 is a front view showing a cutting line marking jig H-shaped steel according to the present invention,

Figure 4 is a left side view showing a cutting line marking jig H-shaped steel according to the present invention,

5 is a right side view showing a cutting line marking jig H-shaped steel according to the present invention,

Figure 6 is an exploded perspective view of the first rail support in the H-shaped cutting line marking jig according to the present invention,

7a is a front and rear perspective view of the second rail support of the H-shaped steel cutting line marking jig according to the present invention,

Figure 8 is an exploded perspective view showing a third rail support in the H-shaped cutting line marking jig according to the present invention.

Explanation of symbols on the main parts of the drawings

11: first vertical guide rail 12: second vertical guide rail

13: 3rd vertical guide rail 14: Horizontal guide rail

20: first rail support portion 21: the first frame

22: first angle 23: first rail fixing means

24: first bearing 25: first wear preventing means

26: first magnet 30: second rail support portion

31: second frame 32: second angle

33: second rail fixing means 34: second bearing

35 rail guide member 40 third rail support

41: third frame 42: third angle

43: third rail fixing means 44: third bearing

45: second wear preventing means 46: the second magnet

47: rail guide extension member 48: support bracket

50: marking means 51: scraper fixing means

52: scraper 53: scraper support bracket

60: H-shaped steel 61: one side flange

62: other side flange 63: web

211, 411: base plate 212, 412: upper body

213, 413: rail coupling groove 214, 414: lower body

311: frame bending surface 321: first bending surface

322 second bending surface

The present invention relates to a cutting line marking jig of H-shaped steel, and in particular, has excellent linear motion to easily mark cutting lines for longitudinal cutting of H-shaped steel, and to various sizes of H-shaped steel. According to the H-shaped steel cutting line marking jig that can be modified according to the marking of the flange and the web of the H-shaped steel at the same time.

In general, H-shaped steels are used as an important part of hulls or buildings in shipbuilding and other fields, and when H-shaped steels having a certain length are first brought into the place of use from steel mills, According to the purpose of use, it is cut to a predetermined length using a cutting device for shape steel.

At this time, in order to cut the shape steel material, a cutting line point is displayed on the web and the flange of the H-shaped steel material using a tape measure, and the first right angler is vertically set at the cutting line point, and the second right angle angle is perpendicular to the flange. At the same time, it extends the cutting line point of the web at the point where the two right angles cross each other and draws a straight line and a straight line at the edge of the flange. Then, extend the marking line of the flange edge to mark the cutting line of the entire flange surface.

Therefore, the worker cuts the H-shaped steel using a cutting device along the marking line drawn subsequently to the web and the flange as described above.

However, the conventional marking method of H-shaped steels is performed by the user marking the web and the flange of the H-shaped steels by using a tape measure and a right angle in several stages by manual operation. The posture is unstable, the fatigue of the worker is increased, there is a problem that takes a lot of work time by working by hand.

Therefore, the present invention devised to solve the conventional problems as described above by marking the cutting line so that the cutting line of the web and the flange has a straight line by matching the reference pointer to the web cutting line point of the section steel measured with a tape measure, vertical It is an object of the present invention to provide a H-shaped steel cutting line marking jig for marking the flange using a guide rail, and the web using a scraper sliding the horizontal guide rail.

The construction of the present invention for achieving the above object, in the marking device of the H-shaped steel material comprising a flange forming both sides protrude in a vertical direction in the vertical direction and a web connected to the flanges on both sides. A first vertical guide rail having predetermined grooves formed at both sides thereof to be movable and in close contact with one side of the flange of the H-shaped steel material to set a cutting line of the one flange; A second vertical guide rail having predetermined grooves formed at both sides thereof so as to be movable and positioned on the web surface of the H-shaped steel; A third vertical guide rail configured to set a cutting line of the other flange because predetermined grooves are formed on both sides so as to be movable and close to the outside of the other flange; A horizontal guide rail fixed to a position where one flange is formed and extending to the other flange and having predetermined grooves formed on both sides thereof; Marking means for marking a cutting line on an upper surface of the web, including a scraper supported by a scraper support bracket fastened to one end of the second vertical guide rail; The horizontal guide rail is fixed to the one side flange, coincides with the groove formed in the first vertical guide rail to support the first vertical guide rail so as to be movable, and coincides with the grooves formed on both sides of the horizontal guide rail. A first rail support portion for fixing the rod; A second rail support part coupled to a groove formed in the horizontal guide rail so as to be movable left and right and supporting the second vertical guide rail so as to be movable by being matched with a groove formed in the second vertical guide rail; The horizontal guide rail is fixed to the other flange and is matched with a groove formed in the third vertical guide rail to support the third vertical guide rail so as to be movable. The horizontal guide rail is aligned with grooves formed on both sides of the horizontal guide rail. It characterized in that it comprises a third rail support for supporting.

And, the first rail support portion and the first frame is fixed to one end of the horizontal guide rail; A first angle at both sides of which is bent so that one side of the bent surface is fixed to the first frame and the first vertical guide rail is positioned between the two bent surfaces; First rail fixing means for fixing the first vertical guide rail through the other bent surface of the first angle; First wear preventing means formed on a bottom surface of the first frame to prevent abrasion of a portion in contact with the one flange; And a first magnet extending from a lower side of the first frame and fixed to an outer side of the one flange.

In addition, the first frame and the first base plate is fastened to the first wear preventing means on the bottom; A first upper body extending upward from one side of the plane of the first base plate to which the first angle is coupled; A first rail coupling groove formed as a predetermined groove to couple the horizontal guide rail in the plane of the first base plate; It includes a first lower body extending downward from the lower surface of the first base plate to which the first magnet is coupled to one side.

In addition, the second rail support portion and the second frame to form a frame bending surface extending upward in one plane; A second angle bent so that a first bent surface is fixed to the other side of the frame bent surface of the second frame, and a second angle is located at the side of the second vertical guide rail; Second rail fixing means for fixing the second vertical guide rail through the second bent surface of the second angle; It is fixed to the upper side of the second frame includes a rail guide member on which the horizontal guide rail is mounted.

And, the third rail support portion and the third frame is fixed to one end of the horizontal guide rail; A third angle at both sides of which is bent so that one side of the bent surface is fixed to the third frame and the third vertical guide rail is positioned between the two bent surfaces; Third rail fixing means for fixing the third vertical guide rail through the other bent surface of the third angle; Second abrasion preventing means formed at a bottom of the third frame to prevent abrasion of a portion in contact with the other flange; A second magnet fixed to an outer side of the other flange at a lower side of the third frame; The support bracket is bent and coupled to the lower side of the third frame; It is coupled to the upper side of the bent surface of the support bracket, a predetermined groove is formed inward to match the groove of the horizontal guide rail includes a rail guide extension member for supporting the other side of the horizontal guide rail.

Here, the third frame and the second base plate is fastened to the second wear preventing means on the back; A second upper body extending upward from one side of the plane of the second base plate to which the second angle is coupled; A second rail coupling groove formed as a predetermined groove to couple the horizontal guide rail in the plane of the second base plate; It includes a second lower body extending from the bottom of the second base plate to the lower side is coupled to the second magnet on one side.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the H-shaped cutting line marking jig according to the present invention will be described in detail.

1 is a perspective view showing a cutting line marking jig H-shaped steel according to the present invention.

Referring to FIG. 1, in general, the H-shaped steel 60 has one side and the other flange 62 extending in the vertical direction from both the left and right sides, and the web 63 extending to the one and the other flange 62 to form a plane. It is composed of

The first rail support 20 is fixed to the outer side of the one flange 61 by using the first magnet 26, the second rail support 30 is the second side on the outer side of the flange It is fixed by using the magnet 46.

The first vertical guide rails 11 and the third vertical guide rails 13 rotate the first and third rail fixing means 23, 33, and 43 to the lower side of the flange 61 on the one side and the other side. And 62), the cutting lines of the one side and the other side flanges 61 and 62 are set.

Here, the cutting lines set by the first and third vertical guide rails 11 and 13 on the one side and the other side flanges 61 and 62 may be set by the operator using the pen or the scraper. Since the line is drawn along (11, 13), marking of the cutting line is completed on the outer side of the one side and the other side flanges (61, 62).

Then, the second rail support part 30 is moved from the horizontal guide rail 14 to one flange 61 or the other flange 62 side, and the marking means 50 using the second rail fixing means 33. ), The second vertical guide rail 12 is moved downward so that the scraper 52 in contact with the plane of the web 63. In addition, the scraper fixing means 51 is adjusted to fix the scraper 52 so that the scraper 52 can mark the web 63.

And the operator manually moves the second rail support portion 30 from one side to the other side, or the other side to one side along the horizontal guide rail 14, so that the scraper 52 moves the web 63 to a predetermined level. As it is scraped by the depth, the web 63 cut line corresponding to the cut line set on the outer side of the one side and the other flange 62 is marked.

Figure 2 is a plan view showing a cutting line marking jig H-shaped steel according to the invention, Figure 3 is a front view showing a cutting line marking jig H-shaped steel according to the invention, Figure 4 is a H-shaped steel according to the present invention Left side view showing a cutting line marking jig, Figure 5 is a right side view showing a cutting line marking jig H-shaped steel according to the present invention.

2 to 5, the first vertical guide rail 11 has predetermined grooves formed at both sides thereof so as to be movable, and is in close contact with the outside of one flange 61 of the H-shaped steel 60. The cutting line of the flange 61 is set, and the second vertical guide rails 12 have predetermined grooves formed at both sides thereof so as to be movable, and are located on the upper surface of the web 63 of the H-shaped steel material 60 and described later. It is slid to the horizontal guide rail 14 is moved left and right. In addition, since the third vertical guide rail 13 has predetermined grooves formed at both sides thereof so as to be movable, the third vertical guide rail 13 is in close contact with the outer side of the other flange 62, thereby setting a cutting line of the other flange 62, and setting the horizontal guide rail ( 14 is fixed to a position where one flange 61 is formed and extends to the other flange 62. Here, the first to third vertical guide rails 11, 12, and 13 and the horizontal guide rails 14 are formed with predetermined grooves on both sides thereof, and are moved by the first to third rail supports 20, 30, and 40. Secured and seated as possible.

The marking means 50 includes a scraper fixing means 51, a scraper 52, and a scraper support bracket 53. The scraper support bracket 53 is bent at both sides thereof to form the second vertical guide. Fastened to one end of the rail 12, the scraper 52 is rotatably coupled by the scraper support bracket 53 to scratch the plane of the web 63 of the H-shaped steel 60 to mark the cutting line The scraper fixing means 51 penetrates the plane of the scraper support bracket 53 to fix the scraper 52.

In addition, the first rail support part 20 is fixed to the one side flange 61 by the magnetic force of the first magnet 26 to be described later, coincides with the groove formed in the first vertical guide rail 11 and the first Support the vertical guide rail 11 so as to be movable, and fastening the screw through the through hole 141 formed in the horizontal guide rail 14 to match the grooves formed on both sides of the horizontal guide rail 14 A means is inserted to fix the horizontal guide rail 14.

The second rail support part 30 is coupled to the groove formed in the horizontal guide rail 14 so as to be movable left and right, and is supported by the groove formed in the second vertical guide rail 12 so as to be movable.

The third rail support part 40 is fixed to the other flange 62, coincides with the groove formed in the third vertical guide rail 13 to support the third vertical guide rail 13 to be movable, The horizontal guide rails 14 are aligned with grooves formed on both sides of the horizontal guide rails 14 to support the horizontal guide rails 14.

That is, the first rail support portion 20 extends up and down in the H-shaped steel 60, using flanges 61 and 62 on one side of the flanges 61 and 62, so that the first magnet 26 is used. The third rail support part 40 is fixed to the other flange 62 by using the second magnet 46. In addition, the second rail support portion 30 includes a bearing (not shown) therein and includes a rail guide member 35 so as to be slidably movable in the horizontal guide rail 14 in the second vertical guide. Support the rail 12.

The first to third vertical guide rails 11, 12, and 13 are supported to be movable by the first to third rail support units 20, 30, and 40, respectively, and the horizontal guide rails 14 are supported. One end is fixed by the first rail support portion 20, the other end is movable the third rail support portion 40 in accordance with the distance between the two flanges (61, 62) of the H-shaped steel (60) It is configured to.

In addition, the marking means 50 including the scraper 52 is formed at the end of the second vertical guide rail 12 so that the second rail support part 30 is the horizontal guide rail 14. As it moves, the cutting line is marked while scratching the plane of the web 63.

Here, the first rail support portion 20 is the first frame 21, the first angle 22, the first rail fixing means 23, the first bearing 24, the first wear preventing means 25, The first magnet 26 is included. here. One end of the horizontal guide rail 14 is fixed to the first frame 21, and a detailed configuration thereof will be described later with reference to FIG. 6.

The first bearing 24 is fixed to the first frame 21 so that a predetermined groove is formed inside the first vertical guide rail 11 so as to be movable. The first angle 22 has one side and the other side. Each of which is bent to form a "c" shape, one side of the bending surface is fixed to the first frame 21, the first rail fixing means 23 penetrates the other side of the bending surface of the first angle 22 The first vertical guide rail 11 penetrating the first bearing 24 is fixed. In addition, the first wear preventing means 25 is coupled to the bottom of the first frame 21 when the first rail support portion 20 is fixed to the one flange 61 and the one side flange 61 and the Abrasion is prevented by preventing friction between the first frame 21 of the first rail support 20. In addition, the first magnet 26 is formed below the first frame 21 so that the first magnet 26 may be located outside the one flange 61, and the first rail support 20 may be disposed on the one flange 61. Fix it to

In addition, the second rail support part 30 supports the second vertical guide rail 12, and for this purpose, the second frame 31, the second bearing 34, the second angle 32, and the second Rail fixing means 33, the rail guide member 35, and the detailed configuration thereof will be described later with reference to FIG.

Here, the second frame 31 forms a bent surface extending upward from one plane, and the second bearing 34 is fixed to one side of the bent surface of the second frame 31, and the second vertical guide The second vertical guide rail 12 is moved inward to be aligned with the groove of the rail 12, and the second angle 32 is bent on both sides thereof so that one side of the bent surface is the second frame 31. It is fixed to the other side at the bent surface of the, and includes the second bearing 34 between the two bent surface, the second rail fixing means 33 passes through the other bent surface of the second angle 32 The second vertical guide rail 12 is fixed, and the rail guide member 35 is fixed to the upper side of the second frame 31 so that the horizontal guide rail 14 is seated.

In addition, the third rail support portion 40 supports the third vertical guide rail 13 and the horizontal guide rail 14, for this purpose, the third frame 41, the third bearing 44, the third The angle 42, the third rail fixing means 43, the second wear preventing means 45, the second magnet 46, the support bracket 48, the rail guide extension member 47 and includes a detailed configuration Will be described later with reference to FIG.

Here, one end of the horizontal guide rail 14 is fixed to the third frame 41, the third bearing 44 is fixed to the third frame 41, and the third vertical guide rail. It is formed so as to coincide with the groove of (13) and the third vertical guide rail 13 is moved inward. In addition, the third angle 42 has a "c" shape, and both sides are bent to form a bent surface on the third frame 41 and the other bent surface is located on the front surface of the third bearing 44. The third vertical guide rail 13 is positioned between the two bent surfaces, and the third rail fixing means 43 is formed in a screw shape and rotates through the other bent surface of the third angle 42. The end of the third vertical guide rail 13 is in close contact with the third vertical guide rail 13. The second wear preventing means 45 is formed on the bottom surface of the third frame 41 in contact with the upper surface of the other flange 62 to be worn by friction between the third frame 41 and the other flange 62. To prevent. The second magnet 46 is fixed to the outside of the other flange 62 in the lower side of the third frame 41 to fix the third rail support portion 40, the support bracket 48 is a letter "b" It is bent in the form, it is coupled to the lower side of the third frame 41, the rail guide extension member 47 is coupled to the upper side of the bent surface of the support bracket 48 to the bearing (not shown) inwards. And a predetermined groove is formed to coincide with the groove of the horizontal guide rail 14 to support the other side of the horizontal guide rail 14.

Figure 6 is an exploded perspective view showing the first rail support in the H-shaped cutting line marking jig according to the present invention.

Referring to FIG. 6, the first frame 21 of the first rail support 20 includes a first base plate 211 having the first wear preventing means 25 coupled to a bottom thereof, and the first base. First grooves 212 extending upward from one plane of the plate 211 and one end of the horizontal guide rail 14 in the plane of the first base plate 211 are seated and fixed in a predetermined groove. The first rail coupling groove 213 is formed as a lower portion of the first base plate 211 is composed of a first lower body 214 to which the first magnet 26 is coupled.

That is, one end of the horizontal guide rail 14 is seated in the first rail coupling groove 213, and a fastening means such as a screw penetrates one end of the horizontal guide rail 14 so that the first base plate ( 211). In addition, an inner side of one side of the bent surface of the first angle 22 is coupled to one side of the first upper body 212, and the first bearing 24 is coupled to the other side.

Here, the first bearing 24 has the other bent surface of the first angle 22 on the front surface where the predetermined groove through which the first vertical guide rail 11 penetrates is located, and the first upper portion is the back surface. The other side of the body 212 is coupled by fastening means such as screws.

In addition, the first wear preventing means 25 is coupled to the bottom surface of the first base plate 211 in close contact with the upper surface of the one flange 61, the screw penetrating the first base plate 211 The first wear preventing means 25 is fixed by the fastening means.

Figure 7a is a front perspective view showing a second rail support in the H-shaped cutting line marking jig according to the present invention, Figure 7b is a rear perspective view showing a second rail support in the H-shaped cutting line marking jig according to the present invention. to be.

7A and 7B, in the second rail support part 30, the second frame 31 includes a frame bending surface 311 formed in a “b” shape and bent upwards, and the second angle ( 32 is formed in a "b" shape so that the first bent surface 321 is coupled to the inside of the frame bent surface 311 of the second frame 31 by a screw or the like, the second angle of 32 The second bent surface 322 is formed to be located on one side of the second vertical guide rail 12. In addition, a bearing (not shown) is disposed inside the horizontal guide rail 14 to allow the second rail support part 30 to move left and right in the horizontal guide rail 14 upward from the plane of the second frame 31. Rail guide member 35 having a predetermined groove is formed.

Therefore, the second bearing 34 is exposed to the front surface through which the second vertical guide rail 12 penetrates and is coupled to the outside of the frame bending surface 311 of the second frame 31 on the rear surface thereof. The second rail fixing means 33 penetrates through the second bent surface 322 of the second angle 32 at one side of the second bearing 34 to terminate the second vertical guide rail 12. It is in close contact with the side to fix the second vertical guide rail 12.

Figure 8 is an exploded perspective view showing a third rail support in the H-shaped cutting line marking jig according to the present invention.

Referring to FIG. 8, the third frame 41 has a second base plate 411 to which the second wear preventing means 45 is coupled to a rear surface, and an upper side of the second base plate 411 on one plane. And a second rail coupling groove 413 formed as a predetermined groove so that the other side of the horizontal guide rail 14 is seated in the plane of the second base plate 411. The second base plate 411 extends downward and includes a second lower body 414 to which the second magnet 46 is coupled.

In such a third frame 41, one side of the second upper body 412 is coupled to an inner side of one side of the bent surface of the third angle 42, and the third bearing 44 is coupled to the other side thereof. do. In addition, the third bearing 44 has the other bent surface of the third angle 42 on the front surface of which the predetermined groove through which the third vertical guide rail 13 penetrates is positioned, and the second bearing 44 is located on the rear surface of the third bearing 44. The other side of the upper body 412 is coupled by fastening means such as screws.

In addition, the second wear preventing means 45 is coupled to the bottom surface of the second base plate 411 in close contact with the upper surface of the other flange 61, the screw penetrating the second base plate 411 The second wear preventing means 45 is fixed by the fastening means.

In addition, the third rail support portion 40 is coupled to one side of the second lower body 414, the support bracket 48 is bent in a "b" shape and the upper surface of the bent surface of the support bracket 48 And a rail guide extension member 47 having a predetermined groove in which the horizontal guide rail 14 on which a bearing (not shown) is formed is formed.

The support bracket 48 is coupled to one side of the second lower body 414 by a screw or the like, and the rail guide extension member 47 is located on the second base at an upper side of the support bracket 48. A groove corresponding to the second rail coupling groove 413 formed in the plane of the plate 411 is formed to support the horizontal guide rail 14.

The present invention is not limited to the preferred embodiments of the above-described features, and any person having ordinary skill in the art to which the present invention pertains may make various modifications without departing from the gist of the present invention as claimed in the claims. Of course, such changes will fall within the scope of the claims.

As described above, the H-shaped steel cutting line marking jig according to the present invention marks the cutting line of the flange using a vertical guide rail, and the vertical guide rail and the scraper slide the horizontal guide rail to coincide with the cutting line of the flange. By marking the cutting line of the web, the cutting line marking work of H-shaped steel is easy and the working time is greatly reduced.

Claims (6)

In the marking device of the H-shaped steel material 60, comprising a flange (61, 62) both sides protruding at a predetermined height in the vertical direction and a web (63) connected to the flanges (61, 62) on both sides, First grooves are formed on both side surfaces so as to be movable, and the first vertical guide rails 11 are in close contact with one side of the flange 61 of the H-shaped steel 60 to set a cutting line of the one side flange 61. and; A second vertical guide rail 12 formed on both sides of the H-shaped steel 60 so as to be movable; A third vertical guide rail 13 for setting a cutting line of the other flange 62 because predetermined grooves are formed on both sides so as to be movable and close to the outside of the other flange 62; A horizontal guide rail 14 fixed to a position where one side flange 61 is formed and extending to the other side flange 62 and having predetermined grooves formed on both sides thereof; Marking means (50) for marking a cutting line on the upper surface of the web (63) including a scraper (52) supported by a scraper support bracket (53) fastened to one end of the second vertical guide rail (12) )and; It is fixed to the one side flange 61, coincide with the groove formed in the first vertical guide rail 11 to support the first vertical guide rail 11 to be movable, the horizontal guide rail 14 A first rail support part 20 that matches the grooves formed on both sides of the first rail support part 20 to fix the horizontal guide rail 14; It is coupled to the groove formed in the horizontal guide rail 14 so as to be movable left and right, and matched to the groove formed in the second vertical guide rail 12 to support the second vertical guide rail 12 to be movable. A second rail support portion 30; The third vertical guide rail 13 is fixed to the other flange 62 and coincides with a groove formed in the third vertical guide rail 13 so as to be movable. The horizontal guide rail 14 H-shaped steel cutting line marking jig, characterized in that it comprises a third rail support portion 40 to match the groove formed on both sides to support the horizontal guide rail (14). The method of claim 1, wherein the first rail support portion 20 A first frame 21 fixed to one end of the horizontal guide rail 14; A first angle 22 in which both sides are bent so that one side of the bent surface is fixed to the first frame 21, and the first vertical guide rail 11 is positioned between the two bent surfaces; First rail fixing means (23) for fixing the first vertical guide rail (11) through the other bent surface of the first angle (22); First wear preventing means (25) formed at a bottom of the first frame (21) to prevent abrasion of a portion in contact with the one flange (61); H-shaped cutting line marking jig, characterized in that it comprises a first magnet (26) extending from the lower side of the first frame (21) fixed to the outside of the one flange (61). The method of claim 2, wherein the first frame 21 A first base plate 211 to which the first wear preventing means 25 is fastened to a bottom surface; A first upper body 212 extending upward from one plane of the first base plate 211 to which the first angle 22 is coupled; A first rail coupling groove 213 formed as a predetermined groove so that the horizontal guide rail 14 is coupled in the plane of the first base plate 211; H-shaped steel cutting line marking jig, characterized in that it comprises a first lower body 214 extending downward from the lower surface of the first base plate 211 is coupled to the first magnet 26 on one side. . The method of claim 1, wherein the second rail support portion 30 A second frame 31 forming a frame bending surface 311 extending upward from one plane; The first bent surface 321 is bent and fixed to the other side of the frame bent surface of the second frame 31, and the second bent surface 322 is positioned on the side of the second vertical guide rail 12. A second angle 32 being; Second rail fixing means (33) for fixing the second vertical guide rail (12) through the second bent surface (322) of the second angle (32); H-shaped steel cutting line marking jig, characterized in that it comprises a rail guide member (35) fixed to the upper side of the second frame (31) on which the horizontal guide rail (14) is seated. The method of claim 1, wherein the third rail support portion 40 A third frame 41 to which one end of the horizontal guide rail 14 is fixed; A third angle 42 in which both sides are bent so that one side of the bent surface is fixed to the third frame 41 and the third vertical guide rail 13 is positioned between the two bent surfaces; Third rail fixing means (43) for fixing the third vertical guide rail (13) through the other bent surface of the third angle (42); Second abrasion preventing means (45) formed at the bottom of the third frame (41) to prevent abrasion of a portion in contact with the other flange (62); A second magnet 46 fixed to an outer side of the other flange 62 at a lower side of the third frame 41; The support bracket 48 is bent and coupled to the lower side of the third frame 41; A rail guide extension member coupled to an upper side of the bent surface of the support bracket 48 and having a predetermined groove formed therein to coincide with the groove of the horizontal guide rail 14 to support the other side of the horizontal guide rail 14. H-shaped cutting line marking jig comprising a 47. The method of claim 5, wherein the third frame (41) A second base plate 411 to which the second wear preventing means 45 is fastened to a bottom surface; A second upper body 412 extending upward from one plane of the second base plate 411 to which the second angle 32 is coupled; A second rail coupling groove 413 formed as a predetermined groove such that the horizontal guide rails 14 are coupled to each other in the plane of the second base plate 411; H-shaped steel cutting line marking jig, characterized in that it comprises a second lower body 414 extending downward from the bottom of the second base plate 411, the second magnet 46 is coupled to one side. .

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