Cutting process of large h-beam

Abstract

The application discloses a cutting process of large H-shaped steel, which comprises the following steps: S1, a cutting wing plate guide device is prepared, and the guide device is installed on the H-shaped steel; S2, a pipe cutting machine is adsorbed on the wing plate surface of the H-shaped steel, and the cutting torch angle and height of the pipe cutting machine are adjusted; S3, the straight mouth of the wing plate of the H-shaped steel is cut, and the remaining amount of the wing plate of the H-shaped steel is cut off at the joint with the web; S4, a bevel boundary line is drawn, and the pipe cutting machine cuts the wing plate surface bevel and the inner wall bevel along the bevel boundary line from the upper edge of the wing plate of the H-shaped steel; S5, steps S2-S4 are repeated, and the cutting work of the wing plate on the other side of the H-shaped steel and the wing plates on both sides of the other end of the H-shaped steel is completed; and S6, a plate cutting machine and manual cutting are adopted to complete the cutting work of the remaining amount of the web. The pipe cutting machine is used to cut the wing plate of the H-shaped steel, the investment of the hoisting machinery, the investment of the operation platform and the investment of the personnel are solved, the production efficiency is greatly improved, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of steel cutting, in particular to a cutting process for large H-shaped steel. Background Art

[0002] During the construction of modular factories, the main structure of the module is formed by cutting, assembling and welding large H-shaped steels of different specifications and commonly used H-shaped steels. Commonly used H-shaped steels are generally cut by CNC equipment and manual cutting to meet production needs, while large H-shaped steels are formed by plates through related cutting, assembly and welding. The flanges and webs at both ends are left with a certain cutting margin and are cut after the size is confirmed. Each large H-shaped steel weighs several tons or even dozens of tons, and the wall thickness of its flange is relatively large, generally 25mm-90m m; and the height is relatively long, generally 400mm-1400mm. In the past, when cutting large H-shaped steel, the hoisting method was used successively, the H-shaped steel was placed in an "I" shape, and an operating platform was set up. The flanges at both ends of the H-shaped steel were cut by a plate cutting machine and manual cutting methods were used. Then, the hoisting method was continued to place the H-shaped steel parallel to the "H", and the webs at both ends of the H-shaped steel were cut by a plate cutting machine and manual cutting methods. This cutting method requires the cooperation of a large crane multiple times, the setting up of an operating platform, and the involvement of multiple people to complete the cutting. Summary of the Invention

[0003] The purpose of the present invention is to provide a cutting process for large H-shaped steel, which uses a pipe cutting machine instead of a plate cutting machine to cut the H-shaped steel flange, solves the investment in lifting machinery, the investment in setting up an operating platform and the investment in personnel, greatly improves production efficiency and reduces production costs.

[0004] In order to achieve the purpose of the present invention, the present invention provides a cutting process for large H-beam, comprising the following steps:

[0005] S1. Make a cutting wing plate guide device and install the guide device on the H-beam;

[0006] S2. Adsorbing the pipe cutting machine onto the wing plate surface of the H-beam, and adjusting the cutting angle and height of the cutting torch of the pipe cutting machine;

[0007] S3, cutting the straight edge of the flange of the H-shaped steel, and removing the junction between the flange remainder and the web of the H-shaped steel;

[0008] S4. A groove boundary line is set, and the pipe cutting machine cuts the groove of the wing plate surface and the inner wall groove along the groove boundary line from the upper edge of the H-shaped steel wing plate;

[0009] S5. Repeat steps S2-S4 to complete the cutting of the wing plate on the other side of the H-beam and the wing plates on both sides of the other end of the H-beam;

[0010] S6. Use plate cutting machine and manual cutting to complete the cutting of web allowance.

[0011] As a preferred technical solution of the present invention, in step S1, the guide device includes a base; a vertical pole, which is fixedly connected to the top of the base and has a thread on its surface; a support plate, a surface of the support plate is provided with a strip groove, and the vertical pole is arranged to pass through the strip groove; an adjusting nut, two of the adjusting nuts are threadedly connected to the vertical pole, and the support plate is clamped between the two adjusting nuts; a guide plate, which is fixedly connected to the side end of the support plate, and the guide plate is vertically arranged.

[0012] As a preferred technical solution of the present invention, in step S1, when installing the guide device, the H-shaped steel is first placed in an H shape, the base is fixed to the web surface of the H-shaped steel, the position of the support plate is adjusted, the guide plate surface and the wing plate surface of the H-shaped steel are set in the same plane, and the position of the support plate is fixed by the two adjusting nuts.

[0013] As a preferred technical solution of the present invention, in step S2, the pipe cutting machine is adsorbed on the predetermined position of the H-shaped steel wing to be cut, the cutting torch of the pipe cutting machine is adjusted to a cutting angle of 0°, the nozzle of the cutting torch of the pipe cutting machine is adjusted to a distance within 3 mm from the wing, the side edge of the cutting torch nozzle is adjusted to the wing cutting line, the power of the pipe cutting machine is turned on, the pipe cutting machine is moved toward the edge of the wing, the difference between the side edge of the cutting torch and the wing cutting line is observed, the power of the pipe cutting machine is turned off, and the placement angle of the pipe cutting machine is adjusted according to the difference between the side edge of the cutting torch and the wing cutting line, the center of the cutting torch nozzle is adjusted to the wing cutting line, and the distance between the cutting torch nozzle and the wing is adjusted to 3 mm to 5 mm.

[0014] As an optimal technical solution of the present invention, in step S3, the pipe cutting machine torch valve is opened, the flame and the cutting oxygen wind line are adjusted, the pipe cutting machine power is turned on, the pipe cutting machine moves toward the edge end of the wing plate, and the cutting torch cuts the wing plate straight along the wing plate cutting line from the lower edge of the wing plate. When the pipe cutting machine moves to the junction of the wing plate and the guide plate, the pipe cutting machine continues to move upward along the guide plate. When the straight cutting of the wing plate is completed, the pipe cutting machine power and the torch valve are turned off.

[0015] As a preferred technical solution of the present invention, in step S3, the junction between the H-shaped steel flange and the web is manually cut to remove the junction between the remaining H-shaped steel flange and the web.

[0016] As a preferred technical solution of the present invention, in step S4, a groove boundary line is drawn at the straight edge of the H-shaped steel flange by connecting measuring points.

[0017] As a preferred technical solution of the present invention, in step S4, when the pipe cutting machine performs bevel cutting of the wing plate surface from the upper edge of the H-shaped steel wing plate along the bevel dividing line, first adjust the cutting torch of the pipe cutting machine to 30° of the cutting surface bevel angle, adjust the cutting torch to a distance of 5mm to 8mm from the wing plate, open the cutting torch valve, adjust the flame and the cutting oxygen wind line, adjust the left and right distance between the cutting torch and the bevel of the wing plate surface to be cut, until the predetermined position of the cutting oxygen wind line is adjusted to be consistent with the bevel dividing line of the upper edge of the wing plate, turn on the power of the pipe cutting machine, the pipe cutting machine moves downward from the guide plate, and the cutting torch cuts the bevel of the wing plate surface from the upper edge of the wing plate along the bevel dividing line. When the bevel cutting of the wing plate surface is completed, turn off the power of the pipe cutting machine and the cutting torch valve.

[0018] Compared with the prior art, the present invention provides a cutting process for large H-shaped steel, which has the following beneficial effects:

[0019] The present invention manufactures a guide device and places the guide device on the H-shaped steel, and places the guide plate and the upper part of the wing plate in a parallel plane and fixes them. When the pipe cutter cuts from the bottom of the wing plate to the upper edge of the wing plate, the pipe cutter absorbs the guide plate and continues cutting until the cutting is completed and the pipe cutter absorbs the guide plate and continues cutting the groove from the upper edge of the wing plate. The pipe cutter replaces the plate cutter in the working mode of cutting the H-shaped steel wing plate, which not only solves the problem that the pipe cutter cannot cut the H-shaped steel wing plate, but also solves the investment in lifting machinery, the investment in setting up an operating platform and the investment in personnel, thereby greatly improving production efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the working state of the present invention;

[0021] Figure 2 It is a schematic structural diagram of the guide device of the present invention;

[0022] Figure 3 It is a side view of the guide device installation of the present invention.

[0023] 1 is a guide device, 2 is an H-shaped steel, 3 is a pipe cutter, 4 is a base, 5 is a vertical pole, 6 is a support plate, 7 is an adjusting nut, and 8 is a guide plate. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 3 , an embodiment of the present invention provides a large H-beam cutting process, comprising the following steps:

[0026] S1, making a cutting wing plate guide device 1, and installing the guide device 1 on the H-beam 2;

[0027] S2, adsorbing the pipe cutting machine 3 on the wing plate surface of the H-beam 2, and adjusting the cutting angle and height of the cutting torch of the pipe cutting machine 3;

[0028] S3, cutting the straight edge of the flange of the H-shaped steel 2, and removing the junction between the flange remainder and the web of the H-shaped steel 2;

[0029] S4, setting a groove boundary line, and the pipe cutting machine 3 cuts the groove of the wing plate surface and the inner wall groove along the groove boundary line from the upper edge of the wing plate of the H-shaped steel 2;

[0030] S5. Repeat steps S2-S4 to complete the cutting of the wing plate on the other side of the H-beam 2 and the wing plates on both sides of the other end of the H-beam 2;

[0031] S6. Use plate cutting machine and manual cutting to complete the cutting of web allowance.

[0032] In one embodiment of the present invention, in step S1, the guide device 1 includes a base 4; a vertical rod 5, the vertical rod 5 is fixedly connected to the top of the base 4, and the surface of the vertical rod 5 is provided with a thread; a support plate 6, the support plate 6 has a strip groove on its surface, and the vertical rod 5 is arranged to pass through the strip groove; an adjusting nut 7, two of the adjusting nuts 7 are threadedly connected to the vertical rod 5, and the support plate 6 is clamped between the two adjusting nuts 7; a guide plate 8, the guide plate 8 is fixedly connected to the side end of the support plate 6, and the guide plate 8 is vertically arranged.

[0033] In one embodiment of the present invention, in step S1, when installing the guide device 1, the H-shaped steel 2 is first placed in an H shape, the base 4 is fixed to the web surface of the H-shaped steel 2, the position of the support plate 6 is adjusted, the surface of the guide plate 8 is set in the same plane as the wing plate surface of the H-shaped steel 2, and the position of the support plate 6 is fixed by the two adjusting nuts 7.

[0034] In one embodiment of the present invention, in step S2, the pipe cutting machine 3 is adsorbed on the predetermined position of the wing plate to be cut of the H-shaped steel 2, the cutting torch of the pipe cutting machine 3 is adjusted to a cutting angle of 0°, the nozzle of the cutting torch of the pipe cutting machine 3 is adjusted to be within 3 mm away from the wing plate, the side edge of the cutting torch nozzle is adjusted to the wing plate cutting line, the power of the pipe cutting machine 3 is turned on, the pipe cutting machine 3 is moved toward the edge of the wing plate, the difference between the side edge of the cutting torch and the wing plate cutting line is observed, the power of the pipe cutting machine 3 is turned off, and the placement angle of the pipe cutting machine 3 is adjusted according to the difference between the side edge of the cutting torch and the wing plate cutting line, the center of the cutting torch nozzle is adjusted to the wing plate cutting line, and the cutting torch nozzle is adjusted to be 3 mm to 5 mm away from the wing plate.

[0035] In one embodiment of the present invention, in step S3, the cutting torch valve of the pipe cutting machine 3 is opened, the flame and the cutting oxygen wind line are adjusted, the power supply of the pipe cutting machine 3 is turned on, the pipe cutting machine 3 moves toward the edge end of the wing plate, and the cutting torch cuts the straight end of the wing plate along the wing plate cutting line from the lower edge of the wing plate. When the pipe cutting machine 3 moves to the junction of the wing plate and the guide plate 8, the pipe cutting machine 3 continues to move upward along the guide plate 8. When the straight end cutting of the wing plate is completed, the power supply of the pipe cutting machine 3 and the cutting torch valve are turned off.

[0036] In one embodiment of the present invention, in step S3, the junction between the flange and the web of the H-shaped steel 2 is manually cut to remove the junction between the flange remainder of the H-shaped steel 2 and the web.

[0037] In one embodiment of the present invention, in step S4, a groove boundary line is drawn at the straight edge of the flange of the H-beam 2 by connecting measuring points.

[0038] In one embodiment of the present invention, in step S4, when the pipe cutting machine 3 performs flange plate surface groove cutting along the groove boundary line from the upper edge of the flange of the H-shaped steel 2, first adjust the cutting torch of the pipe cutting machine 3 to 30° of the cutting surface groove angle, adjust the cutting torch to a distance of 5mm to 8mm from the flange, open the cutting torch valve, adjust the flame and the cutting oxygen wind line, adjust the left and right distance between the cutting torch and the flange surface groove to be cut, until the predetermined position of the cutting oxygen wind line is adjusted to be consistent with the groove boundary line of the upper edge of the flange, turn on the power of the pipe cutting machine 3, the pipe cutting machine 3 moves downward by the guide plate 8, and the cutting torch cuts the flange surface groove along the groove boundary line from the upper edge of the flange. When the flange surface groove cutting is completed, turn off the power of the pipe cutting machine 3 and the cutting torch valve.

[0039] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. The cutting process of large H-beam is characterized by: The following steps are involved: S1, making a cutting wing plate guide device (1), and installing the guide device (1) on the H-shaped steel (2); The guide device (1) comprises a base (4); a vertical rod (5), wherein the vertical rod (5) is fixedly connected to the top end of the base (4), and a thread is provided on the surface of the vertical rod (5); a support plate (6), wherein a strip groove is provided on the surface of the support plate (6), and the vertical rod (5) passes through the strip groove; an adjusting nut (7), wherein two adjusting nuts (7) are threadedly connected to the vertical rod (5), and the support plate (6) is clamped between the two adjusting nuts (7); and a guide plate (8), wherein the guide plate (8) is fixedly connected to the side end of the support plate (6), and the guide plate (8) is vertically arranged; When installing the guide device (1), first place the H-shaped steel (2) in an H-shape, fix the base (4) to the web surface of the H-shaped steel (2), adjust the position of the support plate (6), set the guide plate (8) surface and the wing plate surface of the H-shaped steel (2) in the same plane, and fix the position of the support plate (6) by the two adjusting nuts (7); S2, adsorbing the pipe cutting machine (3) on the wing plate surface of the H-shaped steel (2), and adjusting the cutting angle and height of the cutting torch of the pipe cutting machine (3); S3, cutting the straight edge of the flange of the H-shaped steel (2), and removing the junction between the flange remainder and the web of the H-shaped steel (2); Open the cutting torch valve of the pipe cutting machine (3), adjust the flame and cutting oxygen wind line, turn on the power of the pipe cutting machine (3), the pipe cutting machine (3) moves toward the edge end of the wing plate, and the cutting torch cuts the wing plate straight along the wing plate cutting line from the lower edge of the wing plate. When the pipe cutting machine (3) moves to the junction of the wing plate and the guide plate (8), the pipe cutting machine (3) continues to move upward along the guide plate (8). When the straight cutting of the wing plate is completed, turn off the power of the pipe cutting machine (3) and the cutting torch valve; S4, setting a groove boundary line, the pipe cutting machine (3) cuts the groove of the wing plate surface and the inner wall groove along the groove boundary line from the upper edge of the wing plate of the H-shaped steel (2); S5, repeating steps S2-S4 to complete the cutting of the wing plate on the other side of the H-shaped steel (2) and the wing plates on both sides of the other end of the H-shaped steel (2); S6. Use plate cutting machine and manual cutting to complete the cutting of web allowance.

2. The large H-beam cutting process according to claim 1, characterized in that: In step S2, the pipe cutting machine (3) is adsorbed on a predetermined position of the wing plate to be cut of the H-shaped steel (2), the cutting torch of the pipe cutting machine (3) is adjusted to a cutting angle of 0°, the nozzle of the cutting torch of the pipe cutting machine (3) is adjusted to a distance of less than 3 mm from the wing plate, the side edge of the cutting torch nozzle is adjusted to the wing plate cutting line, the power of the pipe cutting machine (3) is turned on, the pipe cutting machine (3) is moved toward the edge of the wing plate, the difference between the side edge of the cutting torch and the wing plate cutting line is observed, the power of the pipe cutting machine (3) is turned off, and the placement angle of the pipe cutting machine (3) is adjusted according to the difference between the side edge of the cutting torch and the wing plate cutting line, the center of the cutting torch nozzle is adjusted to the wing plate cutting line, and the cutting torch nozzle is adjusted to a distance of 3 mm to 5 mm from the wing plate.

3. The large H-beam cutting process according to claim 1, characterized in that: In step S3, the junction between the flange and the web of the H-shaped steel (2) is cut manually to remove the junction between the flange remainder and the web of the H-shaped steel (2).

4. The large H-beam cutting process according to claim 1, characterized in that: In step S4, a measuring point connection method is used to determine a groove boundary line at the straight edge of the flange of the H-shaped steel (2).

5. The large H-beam cutting process according to claim 1, characterized in that: In step S4, when the pipe cutting machine (3) performs bevel cutting of the wing plate surface along the bevel dividing line from the upper edge of the wing plate of the H-shaped steel (2), firstly, the cutting torch of the pipe cutting machine (3) is adjusted to 30° of the cutting surface bevel angle, the cutting torch is adjusted to a distance of 5mm to 8mm from the wing plate, the cutting torch valve is opened, the flame and the cutting oxygen wind line are adjusted, and the left and right distances between the cutting torch and the bevel of the wing plate surface to be cut are adjusted until the predetermined position of the cutting oxygen wind line is adjusted to be consistent with the bevel dividing line of the upper edge of the wing plate, the power supply of the pipe cutting machine (3) is turned on, the pipe cutting machine (3) moves downward from the guide plate (8), and the cutting torch performs bevel cutting of the wing plate surface along the bevel dividing line from the upper edge of the wing plate. When the bevel cutting of the wing plate surface is completed, the power supply of the pipe cutting machine (3) and the cutting torch valve are turned off.

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