Ship numerical control grating cutting tool

Abstract

The utility model discloses a numerical control cutting grid tool for ships, which belongs to the technical field of numerical control cutting and comprises a grid base, a plurality of grid placing grooves are arranged in the grid base, and bearing plates are arranged in the grid placing grooves. The bearing plate is used for mounting a first grid and a second grid, and the first grid and the second grid are sequentially stacked from bottom to top; the second grating comprises a second grating frame and a second grating rib plate, and the cross section of the second grating rib plate is trapezoidal. A whole needed grille can be divided into a plurality of small-area grilles through the grille containing grooves in the grille base, local replacement can be carried out according to needs, tedious operation is simplified, and meanwhile the cost expenditure for replacing accessories is further reduced. And meanwhile, the cross section of the second grating rib plate is in a trapezoid shape, flow guide can be formed on the molten steel, remaining of residues on the top face is reduced, meanwhile, the second grating located at the high position with the molten steel generation frequency can be exchanged with other second gratings, and therefore the replacement frequency of the second grating is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of CNC cutting technology, specifically a tooling for CNC cutting of ship grids. Background Technology

[0002] Numerical control (NC) cutting is a process that uses digital control technology to precisely cut metallic or non-metallic materials. It combines computer technology, automatic control technology, and machining technology to perform high-precision and high-efficiency cutting of materials according to a pre-set program and path.

[0003] In the shipbuilding industry, CNC flame cutting technology has become a key processing method due to its high efficiency in processing thick metal plates and its economic advantages. During processing, a dense steel grating or planar bar structure is used on the workpiece to guide the flow of molten steel during flame cutting. In this process, the molten steel rapidly solidifies upon contact with the cooling medium, forming high-hardness carbide slag and iron oxide agglomerates. These residues easily accumulate in the grating gaps or on the top surface. As cutting continues, the slag layer gradually thickens, leading to a decrease in the flatness of the platform surface and the appearance of wavy lines or irregular burrs at the cutting edges, severely affecting the dimensional accuracy of the workpiece and subsequent assembly processes. Furthermore, the adhesive properties of the carbide slag make it difficult to completely remove, requiring frequent shutdowns for cleaning, which not only reduces production efficiency but also increases labor maintenance costs. Simultaneously, in prolonged high-temperature environments, the supporting grating may warp or dent due to uneven heating, also affecting flatness. Replacing the supporting grating is also cumbersome and increases costs. Utility Model Content

[0004] To address the problem of cumbersome and costly replacement operations for gratings due to reduced flatness after heating, this utility model provides a CNC cutting fixture for marine gratings.

[0005] This utility model is achieved through the following technical solution:

[0006] A CNC cutting fixture for ship grating includes a grating base with multiple grating placement slots and a support plate in each slot. The support plate is used to install a first grating and a second grating, which are stacked sequentially from bottom to top. The second grating includes a second grating frame and a second grating stiffener, the second grating stiffener having a trapezoidal cross-section.

[0007] Multiple grating slots on the grating base can divide a single grating into several smaller grating areas, allowing for partial replacement as needed. This simplifies complex operations and further reduces the cost of replacement parts. Meanwhile, the trapezoidal cross-section of the second grating rib plate helps guide the flow of molten steel, reducing residue buildup on the top surface. It also allows for the swapping of second gratings located in areas with high molten steel flow with other second gratings, thereby reducing the frequency of second grating replacement.

[0008] A further improvement of this invention is that the second grille is made of stainless steel. The stainless steel second grille has greater fire resistance, improving its fire resistance and deformation resistance during flame cutting.

[0009] A further improvement of this invention is that the cross-section of the second grid frame is trapezoidal. This helps to increase the flow area of ​​the molten steel and reduce the accumulation points of residue in the molten steel after cooling.

[0010] A further improvement of this utility model is that the first grid includes a grid frame and a grid reinforcing plate; the first grid reinforcing plate is arranged transversely, and the second grid reinforcing plate is arranged longitudinally. This helps to improve the strength of the supporting structure.

[0011] A further improvement of this utility model is that the above-mentioned grid base is generally rectangular in structure, and the grid base is provided with two placement groove groups that are respectively distributed along the long side of the grid base, and the placement groove group includes a plurality of the grid placement grooves.

[0012] A further improvement of this invention is that the long side of the aforementioned grille base is provided with a side opening that can communicate with the grille placement slot. This side opening facilitates the quick replacement of the first and second grilles using external hoisting equipment.

[0013] A further improvement of this invention is that the aforementioned grille placement groove is further provided with a plurality of supporting reinforcing ribs, the two ends of which are connected to a set of opposing supporting plates within the grille placement groove. These supporting reinforcing ribs help to improve the overall structural support strength.

[0014] A further improvement of this utility model is that the aforementioned grid base includes an I-shaped frame and partition beams, wherein the length direction of the web of the I-shaped frame is parallel to the length direction of the grid base; the partition beams are provided in several pairs, and the several pairs of partition beams are symmetrically arranged on both sides of the web of the I-shaped frame. The partition beams cooperate with the I-shaped frame to complete the division of the grid placement slots and can enhance the overall structural support strength.

[0015] A further improvement of this utility model is that the aforementioned pairs of dividing beams are equally distributed on the web of the I-shaped frame.

[0016] A further improvement of this invention is that the top surface of the aforementioned I-beam frame and partition beam is not higher than the top surface of the first grid. Even if molten steel remains and solidifies on the top surface of the I-beam frame or partition beam, it will not affect the flatness of the plate to be processed.

[0017] As can be seen from the above technical solutions, the beneficial effects of this utility model are: the multiple grid placement slots on the grid base can divide the required whole grid into multiple small areas of grid, and local replacement can be performed as needed, simplifying the tedious operation and further reducing the cost of replacement parts; at the same time, the cross-section of the second grid rib plate is trapezoidal, which helps to guide the molten steel and reduce the residue on the top surface. It can also swap the second grid in the area where the molten steel occurs more frequently with other second grids, thereby reducing the replacement frequency of the second grid. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0020] Figure 2 for Figure 1 A schematic diagram of a localized explosion structure.

[0021] Figure 3 This is a schematic diagram of the grid base structure according to a specific embodiment of the present utility model.

[0022] Figure 4 This is a schematic diagram of the first grille structure according to a specific embodiment of the present utility model.

[0023] Figure 5 This is a schematic diagram of the second grille structure according to a specific embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the second grille end face structure of a specific embodiment of the present utility model.

[0025] In the attached diagram: 10, grating base; 11, grating placement slot; 12, side opening; 101, partition beam; 102, I-beam frame; 1021, wing plate; 1022, web plate; 103, support plate; 104, support reinforcing rib; 20, first grating; 201, grating frame one; 202, grating stiffener one; 30, second grating; 301, grating frame two; 302, grating stiffener two. Detailed Implementation

[0026] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0027] like Figures 1-6 As shown, this utility model discloses a CNC cutting fixture for ship gratings, including a grating base 10. The grating base 10 has multiple grating placement slots 11, and each grating placement slot 11 has a support plate 103. A first grating 20 and a second grating 30 are mounted on the support plate 103, and the first grating 20 and the second grating 30 are stacked sequentially from bottom to top. The second grating 30 includes a second grating frame 301 and a second grating rib 302, the second grating rib 302 having a trapezoidal cross-section. The multiple grating placement slots 11 on the grating base 10 can divide a single grating into multiple smaller grating areas, allowing for partial replacement as needed, simplifying tedious operations and further reducing the cost of replacement parts. Simultaneously, the trapezoidal cross-section of the second grating rib 302 helps to guide the flow of molten steel, reducing residue retention on the top surface. It also allows the second grating 30 located in areas with high molten steel flow to be swapped with other second gratings 30, thereby reducing the frequency of replacement of the second grating 30.

[0028] The cross-section of the second grid frame 301 is trapezoidal. This helps to increase the flow area of ​​the molten steel and reduce the accumulation points of residue in the molten steel after cooling.

[0029] The second grille 30 is made of stainless steel, while the first grille 20 is made of steel with a higher hardness than the second grille 30. The purpose is to provide support for the second grille 30 through the first grille 20. Since the second grille 30 made of stainless steel has a lower hardness, adding another layer of stainless steel to the second grille 30 can easily lead to an unstable support structure. Therefore, the cooperation between the first grille 20 and the second grille 30 is necessary to achieve the normal support height. Furthermore, the second grille 30 made of stainless steel has greater fire resistance, which can improve its fire resistance and deformation resistance during flame cutting.

[0030] The first grid 20 includes a grid frame 201 and a grid stiffener 202; the grid stiffener 202 is arranged laterally, and the grid stiffener 302 is arranged longitudinally. This helps to improve the strength of the supporting structure.

[0031] The grid base 10 has a rectangular structure. The grid base 10 is provided with two placement slots that are distributed along the long side of the grid base 10. The placement slots include a plurality of grid placement slots 11.

[0032] The grid base 10 includes an I-shaped frame 102 and partition beams 101. The web 1022 of the I-shaped frame 102 is parallel to the length direction of the grid base 10, and the flanges 1021 of the I-shaped frame 102 are parallel to the short side of the grid base 10. Several pairs of partition beams 101 are provided, and these pairs are symmetrically arranged on both sides of the web 1022 of the I-shaped frame 102. The pairs of partition beams 101 are equally spaced on the web 1022 of the I-shaped frame 102. The partition beams 101 cooperate with the I-shaped frame 102 to divide the grid placement slots 11 and enhance the overall structural support.

[0033] The wing plate 1021, web plate 1022 and the bottom surface of the partition beam 101 of the I-shaped frame 102 are all provided with the support plate 103 and are welded together.

[0034] The long side of the grid base 10 is provided with a side opening 12 that can communicate with the grid placement slot 11. The side opening 12 facilitates the quick replacement of the first grid 20 and the second grid 30 with the help of external hoisting tools.

[0035] The grille placement slot 11 is also provided with a number of supporting reinforcing ribs 104, the two ends of which are connected to a set of opposing supporting plates 103 within the grille placement slot 11. The supporting reinforcing ribs 104 help to improve the overall structural support strength.

[0036] The top surface of the I-beam frame 102 and the partition beam 101 is not higher than the top surface of the first grid 20. Even if molten steel remains and solidifies on the top surface of the I-beam frame 102 or the partition beam 101, it will not affect the flatness of the plate to be processed.

[0037] The present invention discloses a CNC cutting fixture for ship gratings. Multiple grating placement slots on the grating base can divide a single grating into multiple smaller grating areas, allowing for partial replacement as needed. This simplifies complex operations and further reduces the cost of replacement parts. Simultaneously, the trapezoidal cross-section of the second grating rib plate helps guide the flow of molten steel, reducing residue buildup on the top surface. Furthermore, it allows for the swapping of second gratings located in areas with high molten steel flow with other second gratings, thereby reducing the frequency of second grating replacement.

[0038] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A CNC cutting fixture for ship gratings, comprising a grating base (10), characterized in that, The grid base (10) is provided with a plurality of grid placement slots (11), and the grid placement slots (11) are provided with a support plate (103); the support plate (103) is used to install a first grid (20) and a second grid (30), the first grid (20) and the second grid (30) are stacked sequentially from bottom to top; the second grid (30) includes a second grid frame (301) and a second grid stiffener (302), the cross-section of the second grid stiffener (302) is trapezoidal.

2. The CNC cutting fixture for ship gratings according to claim 1, characterized in that, The second grille (30) is made of stainless steel.

3. The CNC cutting fixture for ship gratings according to claim 2, characterized in that, The cross-section of the second grid frame (301) is trapezoidal.

4. A CNC cutting fixture for ship gratings according to any one of claims 1 to 3, characterized in that, The first grid (20) includes a grid frame (201) and a grid stiffener (202); the grid stiffener (202) is arranged in the transverse direction and the grid stiffener (302) is arranged in the longitudinal direction.

5. The CNC cutting fixture for ship gratings according to claim 4, characterized in that, The grid base (10) is rectangular in shape. The grid base (10) is provided with two placement slots that are distributed along the long side of the grid base (10). The placement slots include multiple grid placement slots (11).

6. The CNC cutting fixture for ship gratings according to claim 5, characterized in that, The long side of the grid base (10) is provided with a side opening (12) that can communicate with the grid placement slot (11).

7. The CNC cutting fixture for ship gratings according to claim 5, characterized in that, The grid placement groove (11) is also provided with a number of supporting reinforcing ribs (104), and the two ends of the number of supporting reinforcing ribs (104) are connected to a set of oppositely arranged supporting plates (103) in the grid placement groove (11).

8. A CNC cutting fixture for ship gratings according to claim 5, characterized in that, The grid base (10) includes an I-shaped frame (102) and a partition beam (101). The length direction of the web (1022) of the I-shaped frame (102) is parallel to the length direction of the grid base (10). The partition beam (101) is provided in several pairs, and the several pairs of partition beams (101) are symmetrically arranged on both sides of the web (1022) of the I-shaped frame (102).

9. A CNC cutting fixture for ship gratings according to claim 8, characterized in that, Several pairs of the dividing beams (101) are equally spaced on the web (1022) of the I-shaped frame (102).

10. A CNC cutting fixture for ship gratings according to claim 9, characterized in that, The top surface of the I-shaped frame (102) and the partition beam (101) is not higher than the top surface of the first grid (20).

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