A method for laying out angled T-profiles

Abstract

This invention provides a method for laying out angled T-profiles, relating to the field of layout. The method includes the following steps: S1. Drawing a projection diagram of the angled T-profile in the web plane, showing the actual shape of the web and the projection line of the panel on the web plane; S2. Determining the solid width D of the panel and the assembly angle α between the panel and the web. In the projection diagram of the T-profile, the distance d between the upper and lower edges of the panel is obtained, and at least two sectional views corresponding to different positions of the angle are selected; S3. Expanding the panel into segments with the angle as the boundary; S4. Calculating the angle of the panel; S5. Cutting the panel according to the unfolded layout diagram and machining the corresponding angle of the panel's angle, assembling the panel and web at angle α. This method can accurately lay out and expand angled T-profiles that are not assembled at 90°, providing accurate machining data, meeting the requirements for whole-piece cutting, machining, and assembly, resulting in high production efficiency and lower cost.

Description

Technical Field

[0001] This invention relates to the field of layout technology, and in particular to a layout method for angled T-shaped profiles. Background Technology

[0002] In ship design, the internal structure of a ship is intricate and contains numerous angled components, especially angled T-sections. Angled T-sections are typically assembled by perpendicularly joining the front panel and the web.

[0003] Currently, modeling software can only lay out and unfold angled T-profile parts assembled at 90°. For angled T-profiles not assembled at 90°, it cannot correctly lay out and unfold them while maintaining a certain assembly angle, and cannot accurately provide the processing angle for the angled T-profiles. Alternatively, on-site methods can model the panel of the angled T-profile in segments, lay out and unfold the panel parts segment by segment, and finally assemble and weld them segment by segment. However, this method increases the workload of part modeling, assembly, and welding, resulting in low production efficiency, high cost, and poor assembly quality.

[0004] In summary, for non-90° assembled angled T-profiles, the existing technology lacks a method for layout and development, cannot provide accurate processing data, and cannot meet the requirements for whole-piece cutting, processing and assembly, resulting in low production efficiency and high cost. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide a layout method for angled T-profiles, thereby solving the problems of the lack of a layout and development method for non-90° assembled angled T-profiles in the prior art, the inability to provide accurate processing data, the inability to meet the requirements of whole-piece cutting, processing and assembly, and the resulting low production efficiency and high cost.

[0006] The technical solution of the layout method for the angled T-profile of the present invention is as follows:

[0007] The layout method for angled T-profiles includes the following steps:

[0008] S1. Draw a projection diagram of the angled T-section in the web plane, showing the true shape of the web and the projection line of the face plate on the web plane.

[0009] S2. Determine the solid width D of the panel and the assembly angle α between the panel and the web. In the projection diagram of the T-profile, obtain the distance d between the upper and lower edges of the panel and select at least two sectional views at different positions of the corresponding fold angle.

[0010] S3. Expand the panel into segments using the folded corner as the boundary:

[0011] Draw two parallel lines on the top and bottom edges of the panel, with the distance between the two parallel lines equal to the solid width D of the panel. Then, project the endpoints of the panel edges vertically onto the corresponding parallel lines and connect the projected endpoints to obtain the unfolded solid shape of the panel segments. Then, stitch together at least two panel segments in sequence to complete the unfolding of the panel.

[0012] S4. Calculate the angle of the panel's bend:

[0013] 4.1 Define the bend point of the upper edge line of the panel as a and the bend point of the lower edge line of the panel as b. In the projection diagram of the T-profile, draw the DD section view of the T-profile along the bend line ab, and draw the projection line L1 of the upper edge line of the panel and the projection line L2 of the lower edge line of the panel. The distance between the two projection lines is L, which is equal to the sum of the vertical distances of the two edge lines to the web surface.

[0014] 4.2 First, project the corner point a of the upper edge line onto L1 to obtain projection point A, and project the corner point b of the lower edge line onto L2 to obtain projection point B. Connect projection points A and B to obtain the real shape AB of the panel corner line.

[0015] 4.3 Draw a perpendicular line from projection point B to line segment AB, intersecting L1 at point c. That is, the plane containing line segment Bc is perpendicular to the true shape of the panel angle line AB.

[0016] 4.4 Draw a perpendicular line from point c to L1 to obtain line L3;

[0017] 4.5 Extend the top edge of the panel, intersecting L3 at points e and f respectively;

[0018] 4.6. Connect points b and e to obtain line segment be; connect points b and f to obtain line segment bf.

[0019] 4.7 In △bef, ∠ebf is the panel fold angle, the actual length of line segment ef is M3, and line segments be and bf are projection lines on the web surface; according to the right triangle theorem, ∠ebf is calculated as the panel fold angle by using the actual lengths of line segments ef, be, and bf.

[0020] S5. Cut the panel according to the layout drawing of the panel, and process the corresponding panel angle. Assemble the panel and the web with angle α.

[0021] As a further preferred embodiment, in step S1, the angled T-profile has three segments and two angles; correspondingly, in step S2, sectional views AA, BB, and CC are made perpendicular to the panel edge lines of the three segments, and the included angle between the panel and the web is α.

[0022] As a further preferred option, in step S2, d = D * |cosα| is calculated according to the trigonometric function formula.

[0023] As a further preferred option, in step 4.7, the actual lengths of line segment be and line segment bf are calculated as M1 and M2, respectively, with line segment be and line segment bf as the right-angled sides and L as the other right-angled side.

[0024] As a further preferred option, a triangle is constructed with the actual lengths of line segments M1, M2, and M3 as its sides, and the included angle between M1 and M2 is the panel folding angle.

[0025] As a further preferred option, step S4 is repeated to obtain the angle of the other corner of the panel, and the angle relative to the corner of the panel is processed in step S5.

[0026] The layout method for angled T-profiles of the present invention has the following advantages compared with the prior art:

[0027] The layout method for this angled T-profile is based on the assembly angle and angle of the angled panel. First, the actual shape of the panel is projected and unfolded. Then, an auxiliary triangle is drawn using the projection relationship to obtain the actual length of the three sides, and then the actual angle of the panel is obtained.

[0028] In particular, the method for laying out the angled T-profile involves determining the angle of the panel by drawing a perpendicular line from the bottom edge of the panel to the actual angle line. This perpendicular line lies in a plane perpendicular to the actual angle line. A triangle is then constructed within this plane, passing through the angle line and with its other two sides on the two folded surfaces of the angled panel. The true lengths of the three sides of this triangle are then calculated, thus yielding the angle of the angled panel. This method enables precise layout and development of angled T-profiles that are not assembled at 90°, providing accurate processing data and meeting the requirements for overall material cutting, processing, and assembly. It also results in high production efficiency and lower costs. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of step S1 in an embodiment of the layout method for the angled T-profile of the present invention;

[0030] Figure 2 This is a schematic diagram of step S2 in an embodiment of the layout method for the angled T-profile of the present invention;

[0031] Figure 3 This is a schematic diagram of step S3 in an embodiment of the layout method for the angled T-profile of the present invention;

[0032] Figure 4 This is a schematic diagram of step S4 in an embodiment of the layout method for the angled T-profile of the present invention;

[0033] Figure 5 This is a schematic diagram of step 4.7 in an embodiment of the layout method for the angled T-profile of the present invention;

[0034] Figure 6 This is a schematic diagram of step S5 in an embodiment of the layout method for the angled T-profile of the present invention.

[0035] In the diagram: 1. Panel; 10. Panel corner line; 11. Top edge line; 12. Bottom edge line; 1-1. First panel segment; 1-2. Second panel segment; 1-3. Third panel segment; 2. Web; a. Top edge corner point; b. Bottom edge corner point. Detailed Implementation

[0036] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0037] This embodiment describes a layout method for a bendable T-shaped profile, such as... Figures 1 to 6 As shown, it includes the following steps:

[0038] S1, such as Figure 1 As shown, the angled T-profile includes a face plate 1 and a web plate 2. The face plate 1 is provided with two face plate angle lines 10, which correspond to the angled parts of the web plate 2 respectively. The angled T-profile has three segments and two angles. In the web plate plane, a projection diagram of the angled T-profile is drawn to show the real shape of the web plate 2 and the projection line of the face plate 1 in the web plate plane.

[0039] S2. Determine the solid width D of panel 1 and the assembly angle α between panel 1 and web 2, such as... Figure 2 As shown, in the projection diagram of the T-profile, the distance d between the upper edge 11 and the lower edge 12 of panel 1 is obtained, and at least two sectional views corresponding to different positions of the bend are selected. As a further preferred embodiment, sectional views AA, BB, and CC are made perpendicular to the panel edge lines of the three segments, and the included angle between panel 1 and web 2 is α.

[0040] In step S2, the trigonometric formula is used to calculate d = D * |cosα|. Regardless of whether the angle α between panel 1 and web 2 is acute or obtuse, the distance d between the upper edge 11 and the lower edge 12 of panel 1 can be calculated using the cosine formula. In this embodiment, if the solid width D of panel 1 is 80mm and the angle α between panel 1 and web 2 is 121°, then the distance d between the upper edge 11 and the lower edge 12 of panel 1 is 41mm.

[0041] S3. Expand the panel into segments using the folded corner as the boundary:

[0042] like Figure 3As shown, two parallel lines are drawn for the top edge 11 and bottom edge 12 of panel 1, with the distance between the two parallel lines equal to the solid width D of panel 1. The endpoints of the panel edges are then vertically projected onto the corresponding parallel lines, and the projected endpoints are connected to obtain the unfolded solid shape of the panel segments. Then, at least two panel segments are sequentially spliced ​​together to complete the lofting and unfolding of the panel. Specifically, the panel includes three panel segments, which are sequentially projected and connected to obtain the first panel segment 1-1, the second panel segment 1-2, and the third panel segment 1-3.

[0043] S4. Calculate the angle of the panel's bend:

[0044] 4.1 Define the corner point of the top edge of panel 1 as a, and the corner point of the bottom edge of panel 1 as b, as follows: Figure 4 As shown, in the projection diagram of the T-profile, draw the DD section view of the T-profile along the angle line ab, and draw the projection line L1 of the upper edge line 11 of panel 1 and the projection line L2 of the lower edge line 12 of panel 1. The distance between the two projection lines is L, which is equal to the sum of the vertical distances of the two edge lines perpendicular to the web surface.

[0045] 4.2 First, project the corner point a of the upper edge line onto L1 to obtain projection point A, and project the corner point b of the lower edge line onto L2 to obtain projection point B. Connect projection points A and B to obtain the real shape AB of the panel corner line.

[0046] 4.3 Draw a perpendicular line from projection point B to line segment AB, intersecting L1 at point c. That is, the plane containing line segment Bc is perpendicular to the true shape of the panel angle line AB.

[0047] 4.4 Draw a perpendicular line from point c to L1 to obtain line L3.

[0048] 4.5. Extend the top edge 11 of the panel, intersecting L3 at points e and f respectively;

[0049] 4.6. Connect points b and e to obtain line segment be; connect points b and f to obtain line segment bf.

[0050] 4.7 In △bef, ∠ebf is the panel folding angle, the actual length of line segment ef is M3, and line segments be and bf are projection lines on the web surface. According to the right triangle theorem, ∠ebf is the panel folding angle calculated from the actual lengths of line segments ef, be, and bf. In step 4.7, line segments be and bf are taken as the legs of the right triangle, and L is taken as the other leg, as follows... Figure 5 As shown, the actual length of line segment be is M1, and the actual length of line segment bf is M2. A triangle is constructed with the actual lengths of line segments M1, M2, and M3 as its sides. The angle between M1 and M2 is the angle of the panel's folding angle β. Repeat step S4 to obtain the angle of the other folding angle γ of panel 1.

[0051] S5. Cut the panels according to the layout diagram of panel 1, such as... Figure 6 As shown, the angle of the corresponding panel fold β and the angle of the other panel fold γ are processed, and finally the panel 1 and the web 2 are assembled with angle α.

[0052] The layout method for this angled T-profile is based on the assembly angle and angle of the angled panel. First, the panel's actual shape is projected and unfolded. Then, auxiliary triangles are constructed using the projection relationship to calculate the actual lengths of the three sides, thus determining the actual angle of the panel. Specifically, in this layout method, the angle of the panel is determined by drawing a perpendicular line from the bottom edge of the panel to the actual angled line. The plane containing this perpendicular line is perpendicular to the actual angled line. Triangles are then constructed within this plane, passing through the angled line and with their other two sides on the two folded surfaces of the angled panel. The actual lengths of the three sides of these triangles are then calculated, thus obtaining the angle of the angled panel. This layout method enables precise layout and unfolding of angled T-profiles that are not assembled at 90°, providing accurate processing data, meeting the requirements for overall part cutting, processing, and assembly, resulting in high production efficiency and lower costs.

[0053] 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 substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A method for laying out angled T-profiles, characterized in that, Includes the following steps: S1. Draw a projection diagram of the angled T-section in the web plane, showing the true shape of the web and the projection line of the face plate on the web plane. S2. Determine the solid width D of the panel and the assembly angle α between the panel and the web. In the projection diagram of the T-profile, obtain the distance d between the upper and lower edges of the panel and select at least two sectional views at different positions of the corresponding fold angle. S3. Expand the panel into segments using the folded corner as the boundary: Draw two parallel lines on the top and bottom edges of the panel, with the distance between the two parallel lines equal to the solid width D of the panel. Then, project the endpoints of the panel edges vertically onto the corresponding parallel lines and connect the projected endpoints to obtain the unfolded solid shape of the panel segments. Then, stitch together at least two panel segments in sequence to complete the unfolding of the panel. S4. Calculate the angle of the panel's bend: 4.1 Define the bend point of the upper edge line of the panel as a and the bend point of the lower edge line of the panel as b. In the projection diagram of the T-profile, draw the DD section view of the T-profile along the bend line ab, and draw the projection line L1 of the upper edge line of the panel and the projection line L2 of the lower edge line of the panel. The distance between the two projection lines is L, which is equal to the sum of the vertical distances of the two edge lines to the web surface. 4.2 First, project the corner point a of the upper edge line onto L1 to obtain projection point A, and project the corner point b of the lower edge line onto L2 to obtain projection point B. Connect projection points A and B to obtain the real shape AB of the panel corner line. 4.3 Draw a perpendicular line from projection point B to line segment AB, intersecting L1 at point c. That is, the plane containing line segment Bc is perpendicular to the true shape of the panel angle line AB. 4.4 Draw a perpendicular line from point c to L1 to obtain line L3; 4.5 Extend the top edge of the panel, intersecting L3 at points e and f respectively; 4.

6. Connect points b and e to obtain line segment be; connect points b and f to obtain line segment bf. 4.7 In △bef, ∠ebf is the panel fold angle, the actual length of line segment ef is M3, and line segments be and bf are projection lines on the web surface; according to the right triangle theorem, ∠ebf is calculated as the panel fold angle by using the actual lengths of line segments ef, be, and bf. S5. Cut the panel according to the layout drawing of the panel, and process the corresponding panel angle. Assemble the panel and the web with angle α.

2. The layout method for the angled T-profile according to claim 1, characterized in that, In step S1, the angled T-profile has three segments and two angles; correspondingly, in step S2, sectional views AA, BB, and CC are made perpendicular to the panel edge lines of the three segments, and the included angle between the panel and the web is α.

3. The layout method for the angled T-profile according to claim 1, characterized in that, In step S2, d = D * |cosα| is calculated using trigonometric function formulas.

4. The layout method for the angled T-profile according to claim 1, characterized in that, In step 4.7, with line segments be and bf as the legs of a right angle and L as the other leg, the actual lengths of line segments be and bf are calculated as M1 and M2, respectively.

5. The layout method for the angled T-profile according to claim 1, characterized in that, Construct a triangle with the actual lengths of line segments M1, M2, and M3 as its sides. The angle between M1 and M2 is the angle of the panel fold.

6. The layout method for the angled T-profile according to claim 1, characterized in that, Repeat step S4 to obtain the angle of the other corner of the panel, and process the angle relative to the corner of the panel in step S5.

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