Railway vehicle side wall window opening cutting method

Abstract

The invention discloses a rail vehicle side wall window opening cutting method, which belongs to the technical field of vehicle steel structure processing, and comprises the following steps of: manufacturing a window opening positioning structure on the reverse mounting side of a full-length side wall plate frame by taking a cross beam and a stand column as references; according to the method, a plurality of side wall window hole outlines are drawn on the forward installation side of a full-length side wall plate frame by adopting a pre-manufactured hollow window hole sample plate, finally, corresponding side wall window holes are cut according to the plurality of side wall window hole outlines, and positioning of the plurality of window holes is correlated, so that the situation that each window hole is independently manufactured is avoided, and the production efficiency is improved. The problem that in the current rail vehicle steel structure window opening cutting process, the window opening deviation is too large is solved.

Description

Technical Field

[0001] This invention relates to a method for cutting window openings in the side walls of rail vehicles, belonging to the field of vehicle steel structure processing technology. Background Technology

[0002] The steel structure window openings of rail vehicles are one of the main structural components of the vehicle body. They serve as the interface device for installing the window frames, and play a role in positioning and fixing the window frames. The accuracy of their positioning and the advancement of their cutting technology directly affect the accuracy of the installation of the vehicle window frames and related interior structures, as well as the strength and sealing of the window frame installation. In the current cutting process of steel structure window openings in rail vehicles, each window opening is processed and manufactured independently. Under the accumulation of multiple tolerances and the effect of deflection, the deviation of the window openings is too large. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method for cutting window openings in the side walls of rail vehicles. This method links the positioning of multiple window openings together, avoiding the need to independently manufacture each window opening, and solving the problem of excessive window opening deviation in the current process of cutting steel structure window openings in rail vehicles.

[0004] To solve the above-mentioned technical problems, the present invention is implemented using the following technical solution: A method for cutting window openings in the side wall of a rail vehicle includes: Using pre-set seam welding conditions, multiple box panels are welded together with beams and columns to form a continuous side wall frame; Using the beams and columns as a reference, a window opening positioning structure is constructed on the reverse side of the full-length side wall panel frame; Based on the window opening positioning structure, multiple side wall window opening outlines are drawn on the front side of the full-length side wall panel frame using a pre-made hollow window opening template. Based on the outlines of multiple side wall window openings, cut out the corresponding side wall window openings.

[0005] Furthermore, the method of welding multiple box panels to beams and columns using preset seam welding conditions to form a continuous side wall frame includes: After multiple box panels are arranged to meet the preset seam welding conditions, they are welded to obtain a continuous side wall panel. After tightening and fixing the full-length side wall panel, position the crossbeam and column at the corresponding positions on the full-length side wall panel; Weld the beams and columns from the center outwards to both sides to obtain a full-length side wall frame.

[0006] Furthermore, the length of the sidewall panel is between 24,500 mm and 25,500 mm.

[0007] Furthermore, the preset seam welding conditions include: Arrange multiple panels in the design order to ensure that the straightness of the panels after arrangement is ≤0.5mm / m, the diagonal variance is ≤1mm, and the flatness is ≤0.7mm / m.

[0008] Furthermore, the method of constructing a window opening positioning structure on the reverse side of the continuous side wall panel frame, based on the beams and columns, includes: Drill two punch holes at intervals starting from the beams and columns and ending at the edge of each window opening; Multiple adjacent window openings are grouped into a module, wherein, between two adjacent groups of modules, the first window opening of the latter group coincides with the last window opening of the former group. A set of punched holes for a group of modules are marked with a string along the length of the window opening to obtain the positioning string lines that serve as the window opening positioning structure.

[0009] Furthermore, the hole spacing is 3mm to 4mm.

[0010] Furthermore, the pre-made perforated window template is a perforated window template with the same external dimensions as the window opening dimensions.

[0011] Furthermore, the length of the cutout side of the cutout window template is 10mm away from the length of the outer contour side.

[0012] Furthermore, the hollowed-out window template is also provided with a magnet on one side for adsorbing the hollowed-out window template onto the side of the full-length side wall panel frame, so as to facilitate adsorption onto the full-length side wall panel frame and adjustment of its position.

[0013] Furthermore, based on the window opening positioning structure, multiple side wall window opening outlines are drawn on the front side of the full-length side wall panel frame using a pre-made hollowed-out window opening template, including: Align the top and bottom edges of the hollowed-out window template with the positioning lines, and align the left and right edges with the pattern punch to draw the complete outline of the side wall window opening.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: This invention uses beams and columns as references to create window opening positioning structures on the reverse side of the continuous side wall panel frame. Then, based on the window opening positioning structures, multiple side wall window opening outlines are drawn on the forward side of the continuous side wall panel frame using pre-made hollow window opening templates. Finally, the corresponding side wall window openings are cut according to the multiple side wall window opening outlines, and the positioning of multiple window openings is interconnected, avoiding the situation of making each window opening independently. This solves the problem of excessive window opening deviation in the current steel structure window opening cutting process of rail vehicles. Attached Figure Description

[0015] Figure 1 This is a flowchart of a method for cutting window openings in the side wall of a rail vehicle, provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the hollowed-out window template provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the side wall window opening cutting provided in an embodiment of the present invention.

[0016] In the diagram: 1. Full-length side wall panel frame; 2. Center punch; 301. Outline side length; 302. Hollowed-out side length; 4. Side wall window opening outline; 5. Positioning lines. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention. Example 1

[0018] like Figure 1 As shown, a method for cutting window openings in the side wall of a rail vehicle includes: Using pre-set seam welding conditions, multiple box panels are welded together with beams and columns to form a continuous side wall frame. Specifically: The preset seam welding conditions include: arranging multiple box panels in the design order so that the straightness of the arranged box panels is ≤0.5mm / m, the diagonal variance is ≤1mm, and the flatness is ≤0.7mm / m; After multiple box panels are arranged to meet the preset seam welding conditions, they are welded to obtain a continuous side wall panel; the dimensions of the continuous side wall panel are 24500mm to 25500mm. After tightening and fixing the full-length side wall panel, position the crossbeam and column at the corresponding positions on the full-length side wall panel; Weld the beams and columns from the center outwards to both sides to obtain a full-length side wall frame.

[0019] Using the beams and columns as a reference, a window opening positioning structure is constructed on the reverse side of the continuous side wall panel frame. Specifically: Starting from the beams and columns and ending at the edge of each window opening, make two punch holes at each window opening; the hole spacing is 3mm to 4mm. Multiple adjacent window openings are grouped into a module, wherein, between two adjacent groups of modules, the first window opening of the latter group coincides with the last window opening of the former group. A set of punched holes for a group of modules are marked with a string along the length of the window opening to obtain the positioning string lines that serve as the window opening positioning structure.

[0020] Based on the window opening positioning structure, multiple side wall window opening outlines are drawn on the front side of the full-length side wall panel frame using a pre-made hollow window opening template. It should be noted that the pre-made perforated window template is a perforated window template with the same outer dimensions as the window opening. The distance between the perforated side length and the outer contour side length of the perforated window template can be adjusted according to the specific design dimensions.

[0021] To avoid misalignment during the cutting process, the hollowed-out window template is aligned with the outline of the side wall window opening. A handheld plasma cutter is used to cut along the hollowed-out side length of the template, ultimately obtaining the side wall window opening corresponding to the outline of each side wall window opening. Example 2

[0022] like Figure 1 As shown, a method for cutting window openings in the side wall of a rail vehicle includes: Using pre-set seam welding conditions, multiple box panels are welded together with beams and columns to form a continuous side wall frame 1. Specifically: The preset seam welding conditions include: arranging multiple box panels in the design order so that the straightness of the arranged box panels is ≤0.5mm / m, the diagonal variance is ≤1mm, and the flatness is ≤0.7mm / m; After multiple box panels are arranged to meet the preset seam welding conditions, they are welded to obtain a continuous side wall panel; the dimensions of the continuous side wall panel are 24500mm to 25500mm. After tightening and fixing the full-length side wall panel, position the crossbeam and column at the corresponding positions on the full-length side wall panel; Weld the beams and columns from the center outwards to both sides to obtain the full-length side wall frame 1.

[0023] like Figure 2 and Figure 3 As shown, using the beams and columns as a reference, a window opening positioning structure is constructed on the reverse side of the continuous side wall frame 1. Specifically: Starting from the beams and columns and ending at the edge of each window opening, make two punch holes 2 at each window opening edge; the hole spacing is 3mm to 4mm. Multiple adjacent window openings are grouped into a module, wherein, between two adjacent groups of modules, the first window opening of the latter group coincides with the last window opening of the former group. A line is drawn along the length of the window opening to mark the punch holes 2 of a group of modules, resulting in the positioning line 5, which serves as the positioning structure for the window opening.

[0024] Based on the window opening positioning structure, multiple side wall window opening outlines 4 are drawn on the front side of the full-length side wall panel frame 1 using a pre-made hollow window opening template. It should be noted that the pre-made hollow window template is a hollow window template with the same outer dimensions as the window opening. The distance between the hollow side length 302 and the outer contour side length 301 of the hollow window template can be adjusted according to the specific design dimensions. In this embodiment, the hollow side length 302 and the outer contour side length 301 of the hollow window template are 10mm apart. The hollowed-out window template is also equipped with a magnet on one side for attaching the hollowed-out window template to the side of the full-length side wall frame 1. Since the full-length side wall frame 1 is a metal part, it is easy to fix the hollowed-out window template to the full-length side wall frame 1 and quickly adjust its position.

[0025] Based on the outlines of multiple side wall window openings 4, the corresponding side wall window openings are cut out, specifically: Taking two sets of modules as an example, one set of modules includes 3 window openings, which are arranged in order from left to right; since the first window opening of the second set of modules is the same as the third window opening of the first set of modules, the two sets of modules have a total of 5 window openings. Using the punch holes 2 on the upper and lower sides of the three window openings of the first module as a reference, use the chalk line to draw the positioning chalk line 5 on the upper and lower sides respectively. Align the side length 301 of the upper and lower outlines of the hollow window opening template with the positioning line 5. At this time, the side length 301 of the left outline of the hollow window opening template coincides with the two punch holes 2 on the left side of the first window opening, and the side length 301 of the right outline of the hollow window opening template coincides with the two punch holes 2 on the right side of the first window opening. Use the line to draw the side length outlines of the left and right sides of the first window opening, thus forming the side wall window opening outline 4 of the first window opening. Following the above method, draw the outline 4 of the side wall window opening of the second window opening and the outline 4 of the side wall window opening of the third window opening in sequence. Finally, draw the outline 4 of the three side wall window openings of the first group of modules. Since the second group of modules includes the third window opening of the first group of modules, when drawing the positioning chalk line 5 of the second group of modules, the third window opening of the first group of modules should be used as the reference to avoid making each window opening independently and reduce errors.

[0026] To avoid deviation during the cutting process, the hollowed-out window template is aligned with the side wall window outline 4. A handheld plasma cutter is used to cut along the hollowed-out side length 302 of the hollowed-out window template, ultimately obtaining the side wall window corresponding to each side wall window outline 4.

[0027] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for cutting window openings in the side wall of a rail vehicle, characterized in that, include: Using pre-set seam welding conditions, multiple box panels are welded together with beams and columns to form a continuous side wall frame; Using the beams and columns as a reference, a window opening positioning structure is constructed on the reverse side of the full-length side wall panel frame; Based on the window opening positioning structure, multiple side wall window opening outlines are drawn on the front side of the full-length side wall panel frame using a pre-made hollow window opening template. Based on the outlines of multiple side wall window openings, cut out the corresponding side wall window openings.

2. The method for cutting window openings in the side wall of a rail vehicle according to claim 1, characterized in that, The method employs preset seam welding conditions to weld multiple box panels together with crossbeams and columns to form a continuous side wall frame, including: After multiple box panels are arranged to meet the preset seam welding conditions, they are welded to obtain a continuous side wall panel. After tightening and fixing the full-length side wall panel, position the crossbeam and column at the corresponding positions on the full-length side wall panel; Weld the beams and columns from the center outwards to both sides to obtain a full-length side wall frame.

3. The method for cutting window openings in the side wall of a rail vehicle according to claim 2, characterized in that, The dimensions of the full-length sidewall panel are 24,500 mm to 25,500 mm.

4. The method for cutting window openings in the side wall of a rail vehicle according to claim 2, characterized in that, The preset seam welding conditions include: Arrange multiple panels in the design order to ensure that the straightness of the panels after arrangement is ≤0.5mm / m, the diagonal variance is ≤1mm, and the flatness is ≤0.7mm / m.

5. The method for cutting window openings in the side wall of a rail vehicle according to claim 1, characterized in that, The method of constructing a window opening positioning structure on the reverse side of the continuous side wall panel frame, based on the beams and columns, includes: Drill two punch holes at intervals starting from the beams and columns and ending at the edge of each window opening; Multiple adjacent window openings are grouped into a module, wherein, between two adjacent groups of modules, the first window opening of the latter group coincides with the last window opening of the former group. A set of punched holes for a group of modules are marked along the length of the window opening to obtain the positioning lines that serve as the window opening positioning structure.

6. The method for cutting window openings in the side wall of a rail vehicle according to claim 5, characterized in that, The hole spacing is 3mm to 4mm.

7. The method for cutting window openings in the side wall of a rail vehicle according to claim 1, characterized in that, The pre-made hollowed-out window template is a hollowed-out window template with the same outer dimensions as the window opening.

8. The method for cutting window openings in the side wall of a rail vehicle according to claim 7, characterized in that, The length of the cutout on the template is 10mm shorter than the length of the outline.

9. The method for cutting window openings in the side wall of a rail vehicle according to claim 7, characterized in that, The hollowed-out window template is also equipped with a magnet on one side for attaching the hollowed-out window template to the side of the full-length side wall frame.

10. The method for cutting window openings in the side wall of a rail vehicle according to claim 5, characterized in that, Based on the window opening positioning structure, multiple side wall window opening outlines are drawn on the front side of the full-length side wall panel frame using pre-made hollow window opening templates, including: Align the top and bottom edges of the hollowed-out window template with the positioning lines, and align the left and right edges with the pattern punch to draw the complete outline of the side wall window.

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