A method of lofting

Abstract

The present application belongs to the shipbuilding technical field, disclose a lofting method, it mainly includes the following steps: establish the side projection view of hyperbolic angle plate spare, multiple lower intersection points and multiple upper intersection points are projected on the side projection view; Draw the lofting line of multiple lower angle ribs; Multiple lower intersection points are projected on the lofting line of lower angle rib to form the lofting point of multiple lower intersection points, and the lofting point of multiple lower intersection points is sequentially connected to form the lower angle lofting curve; Multiple upper intersection points are projected on the lofting line of lower angle rib to form the projection point of multiple upper intersection points; The lofting point of the upper intersection point corresponding to the projection point of the upper intersection point is generated; According to the lofting point of the upper intersection point, the lofting point of all the remaining upper intersection points can be obtained, and the lofting point of multiple upper intersection points is sequentially connected to form the upper angle lofting curve. The lofting method provided by the present application can effectively improve the lofting precision, reduce the lofting deviation, improve the production efficiency and save the cost.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and more particularly to a lofting method. Background Technology

[0002] The ship's structure is intricate and contains many angled parts, such as... Figures 1 to 2 The hyperbolic angle plate shown includes a lower angle surface 100', a transition slope 200', and an upper angle surface 300' connected in sequence. The lower angle surface 100' and the transition slope 200' are connected by a lower angle curve 400', and the upper angle surface 300' and the transition slope 200' are connected by an upper angle curve 500'. Multiple lower angle ribs 110' are correspondingly provided on the lower angle surface 100', the transition slope 200', and the upper angle surface 300'. Multiple transition ribs 210' and multiple upper folding ribs 310' are provided. The corresponding lower folding ribs 110' and transition ribs 210' intersect with the lower folding curve 400' at the lower intersection point. The corresponding upper folding ribs 310' and transition ribs 210' intersect with the upper folding curve 500' at the upper intersection point. The side of the lower folding surface 100' that is away from the transition slope 200' is the inner opening line 600', and the side of the upper folding surface 300' that is away from the transition slope 200' is the outer opening line 700'.

[0003] In existing technologies, modeling software can generally only directly lay out and unfold corner plates with straight corner lines. For curved corner plates, manual laying out is still required. Previous laying-out methods approximate curved corner plates as straight corner plates, resulting in low accuracy, poor quality, and the need for additional allowances to compensate for deviations in the laid-out parts. After the parts are machined, the excess is then cut off. This process is inefficient and increases production costs. Summary of the Invention

[0004] The purpose of this invention is to provide a layout method that can effectively improve the layout accuracy of curve bends.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A lofting method, applied to hyperbolic angled plates, mainly includes the following steps:

[0007] S100. Establish a side projection view of the hyperbolic angled plate, and plot the multiple lower intersection points a1, a2, a3...a... n and multiple upper intersection points b1, b2, b3...b n Projected onto the side projection view;

[0008] S200, corresponding to the side projection view in step S100, draw the lofting lines of multiple downward-folding ribs;

[0009] S300, a1, a2, a3...a n Each of the above points is projected onto the corresponding lofting line of the lower folded rib to form multiple lofting points a1', a2', a3'...a' of the lower intersection. n ', smoothly connect a1', a2', a3'……a in sequence. n 'To form a downward-angled lofting curve; b1, b2, b3...b n Projecting them onto the extension lines of the corresponding downward-folding ribs to form projection points bt1, bt2, bt3...bt of the upper intersection points. n ;

[0010] S400, Take the projection point bt of one of the upper intersection points. k Where 1≤k≤n; according to bt k Point b is the lofting point corresponding to the intersection point. k ';

[0011] S500, Based on the layout point b of the upper intersection point. k Point ' is used to obtain the remaining lofting points b1', b2', b3'...b of the upper intersection points. k-1 ' and b k+1 ', b k+2 ', b k+3 '...b n ';

[0012] S600, sequentially and smoothly connect b1', b2', b3'...b n To form an upward-angled lofting curve, connect a1'b1', a2'b2', a3'b3'...a n 'b n Lofting lines are used to form multiple transition ribs.

[0013] Optionally, in step S400, according to bt k Point b is the lofting point corresponding to the intersection point. k Specifically:

[0014] Passing BT k Draw a perpendicular line l to the lower angle lofting curve, and take the lofting point a of the lower intersection point as the reference point. k With ' as the center, and the corresponding a in the side projection view k b k Draw a circle with length as the radius and intersect the perpendicular line l at b. k 'point, b' k Point ' is the lofting point of the upper intersection point at that location.

[0015] Optionally, in step S500, the stakeout point b is determined based on the intersection point. kPoints b1', b2', b3', ..., b' are obtained from the lofting points of the intersection points. k-1 Specifically:

[0016] Take the layout point a of the lower intersection point k-x Point 'x' satisfies 1 ≤ x ≤ k-1, with a k-x Point ' is the center of the circle, and the corresponding point a in the side projection view is... k-x b k-x Draw a circle with the length of b as the radius. k-x+1 Point ' is the center of the circle, with bt k-x bt k-x+1 Draw a circle with radius b, and the two circles intersect at point b. k-x Point '; x takes values ​​of 1, 2, 3...k-1 in sequence, and b can be obtained sequentially. k Lofting points b1', b2', b3'...b to the left of point '. k-1 '.

[0017] Optionally, in step S500, the stakeout point b is determined based on the intersection point. k Point b is the lofting point obtained from the intersection point. k+1 ', b k+2 ', b k+3 '...b n Specifically:

[0018] Take the layout point a of the lower intersection point k+y Point ', y satisfies 1≤y≤ny, with a k+y Point ' is the center of the circle, and the corresponding point a in the side projection view is... k+y b k+y Draw a circle with the length of b as the radius. k+y-1 Point ' is the center of the circle, with bt k+y-1 bt k+y Draw a circle with radius b, and the two circles intersect at point b. k+y Point '; y takes 1, 2, 3...nk in sequence, and we can obtain b in sequence. k Lofting point b of all the upper intersection points to the right of point ' k+1 ', b k+2 ', b k+3 '...b n '.

[0019] Optionally, in step S200, drawing the lofting lines of the plurality of downward-folding ribs specifically involves:

[0020] The lofting lines of the plurality of lower folded corner ribs are arranged at equal intervals along the width direction of the hyperbolic folded corner plate and extend along the length direction of the side projection view.

[0021] Optionally, step S100 further includes:

[0022] The multiple inner intersection points O1, O2, O3...O at the lower corner end of the hyperbolic angled plate are... n Projected onto the side projection view.

[0023] Optionally, in step S200, after the lofting lines of the plurality of downward-folding ribs are drawn, corresponding to the side projection view in step S100, O1, O2, O3...O n The projections are respectively onto the lofting lines of the corresponding downward-folding ribs to form multiple lofting points O1', O2', O3'...O... at the intersection of the inner openings. n ', smoothly connect O1', O2', O3'...O in sequence. n 'The lofting line that forms the inner opening of the hyperbolic angle plate.'

[0024] Optionally, step S100 further includes:

[0025] The multiple outer intersection points P1, P2, P3...P at the upper corner end of the hyperbolic angled plate are... n Projected onto the side projection view.

[0026] Optionally, after drawing the upper angle lofting curve and the lofting lines of the multiple transition ribs, the lofting point b of the upper intersection point is taken. j Point 'j' satisfies 1≤j≤n, with b j Starting from point ', and taking the side projection view as b... j P j The length is given, and a line is drawn parallel to the lofting line of the lower folded rib. The endpoint of the resulting line segment is denoted as P. j By taking 1, 2, 3...n in sequence, we can obtain multiple layout points P1', P2', P3'...P' at the intersection of the outer openings. n '.

[0027] Optionally, P1', P2', P3'...P' are sequentially and smoothly connected. n The outer opening lines of the hyperbolic angle plate are obtained sequentially; b1'P1', b2'P2', b3'P3'...b are connected sequentially. n 'P n 'To form a lofting line with multiple upward-folding ribs.

[0028] Beneficial effects:

[0029] The lofting method provided by this invention can be used for both lower and upper corner lofting curves when used for hyperbolic corner plates, effectively improving lofting accuracy, reducing deviations caused by approximating curved corners as straight corners, eliminating the need for additional allowances on the plates, and eliminating the need for trimming after processing, thereby improving production efficiency and saving costs. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a hyperbolic angled plate component in the prior art;

[0031] Figure 2 This is a top view of a hyperbolic angled plate component in the prior art;

[0032] Figure 3 This is a schematic diagram of the main flow of the layout method of the present invention;

[0033] Figure 4 This is a schematic diagram of the lofting view formed by the side projection view of the hyperbolic angled plate of the present invention.

[0034] In the picture:

[0035] 100', Lower folded corner surface; 110', Lower folded corner rib; 200', Transition slope; 210', Transition rib; 300', Upper folded corner surface; 310', Upper folded corner rib; 400', Lower folded corner curve; 500', Upper folded corner curve; 600', Inner curve; 700', Outer curve;

[0036] 100. Lofting line for the lower angle rib; 200. Lofting line for the transition rib; 300. Lofting line for the upper angle rib; 400. Lofting curve for the lower angle; 500. Lofting curve for the upper angle; 600. Lofting line for the inner opening; 700. Lofting line for the outer opening. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0038] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0041] Reference Figures 2 to 3 As shown, this embodiment provides a lofting method, which is applied to hyperbolic angled plates. The lofting method mainly includes the following steps:

[0042] S100. Create a side projection view of the hyperbolic angled plate, and mark the multiple lower intersection points a1, a2, a3...a... n and multiple upper intersection points b1, b2, b3...b n Projected onto the side projection view;

[0043] S200, corresponding to the side projection view in step S100, draw the lofting lines 100 of multiple downward folded corner ribs;

[0044] S300, a1, a2, a3...a n Projecting these points onto the corresponding lower folded rib's lofting line 100 to form multiple lower intersection points a1', a2', a3'...a n ', smoothly connect a1', a2', a3'……a in sequence. n 'To form a downward angled lofting curve of 400; b1, b2, b3...b n Project them onto the extension of the lofting line 100 of the corresponding downward-folding rib to form multiple projection points bt1, bt2, bt3...bt. n ;

[0045] S400, take the projection point bt of one of the upper intersection points. k Where 1≤k≤n; according to bt kPoint b is the lofting point corresponding to the upper intersection point. k ';

[0046] S500, Based on the layout point b of the intersection point. k Point ' is used to obtain the remaining upper intersection points b1', b2', b3'...b k-1 ' and b k+1 ', b k+2 ', b k+3 '...b n ';

[0047] S600, sequentially and smoothly connect b1', b2', b3'...b n To form an upward-angled lofting curve of 500, connect a1'b1', a2'b2', a3'b3'...a n 'b n Lofting lines 200 are used to form multiple transition ribs.

[0048] Specifically, Figure 4 The top view is a side projection of the hyperbolic angled plate. Figure 4 Below is a lofted view of the hyperbolic angled plate corresponding to the side projection view. The value of n in the figure is preferably set to 6. The following example uses n=6 as a reference. Figure 4 The above methods and steps will be elaborated in detail.

[0049] In step S100, the six lower intersection points a1, a2, a3, a4, a5, a6 and the six upper intersection points b1, b2, b3, b4, b5, b6 are projected onto the side projection view of the hyperbolic angle plate.

[0050] Furthermore, step S100 also includes: intersecting multiple inner openings O1, O2, O3...O at the lower corner end of the hyperbolic angled plate. n Projected onto the side projection view. In this embodiment, this means projecting the six intersection points of the inner openings O1, O2, O3, O4, O5, and O6 onto the side projection view respectively. Figure 4 In the side projection view, the six inner openings coincide at their intersection points.

[0051] Furthermore, step S100 also includes: intersecting multiple outer openings P1, P2, P3...P at the ends of the upper corner face of the hyperbolic angled plate. n Projected onto the side projection view. In this embodiment, this means projecting the six intersection points of the outer openings, P1, P2, P3, P4, P5, and P6, onto the side projection view respectively.

[0052] Then, in step S200, corresponding to the side perspective view of the above steps, multiple lofting lines 100 for the downward-folding corner ribs are drawn. In this embodiment, drawing multiple lofting lines 100 for the downward-folding corner ribs specifically means that the multiple lofting lines 100 for the downward-folding corner ribs are arranged at equal intervals along the width direction of the hyperbolic corner plate and extend along the length direction of the side projection view. Since the value of n is preferably set to 6 in this embodiment, the number of downward-folding corner ribs, transition ribs, and upward-folding corner ribs are all set to 6, therefore the number of lofting lines 100 for the downward-folding corner ribs is also set to 6. In this embodiment, the spacing between two adjacent lofting lines 100 for the downward-folding corner ribs is set to 500mm.

[0053] Then proceed to step S300, referring to... Figure 4 As shown, a1, a2, a3, a4, a5, and a6 are projected onto the corresponding lofting line 100 of the lower corner rib, thereby forming multiple lower intersection lofting points a1', a2', a3', a4', a5', and a6'. These points are then smoothly connected to form the lower corner lofting curve 400. b1, b2, b3, b4, b5, and b6 are also projected onto the extension of the corresponding lower corner rib lofting line 100, thus forming multiple upper intersection projection points bt1, bt2, bt3…bt. n The subsequent steps will generate the corresponding lofting points of the upper intersection points based on the projection points of the upper intersection points.

[0054] Further, after the lofting lines 100 of the six downward-folding corner ribs are drawn, corresponding to the side projection view in step S100, O1, O2, O3, O4, O5, and O6 are projected onto the corresponding lofting lines 100 of the downward-folding corner ribs, thereby forming multiple lofting points O1', O2', O3', O4', O5', and O6' of the inner opening intersection. O1', O2', O3', O4', O5', and O6' are then smoothly connected in sequence to form the lofting line 600 of the inner opening line of the hyperbolic corner plate. And O1'a1', O2'a2', O3'a3', O4'a4', O5'a5', and O6'a6' are the lofting lines 100 for the six downward-folding ribs, respectively.

[0055] Then proceed to step S400. Specifically, according to bt k Point b is the lofting point corresponding to the upper intersection point. k Specifically: bypassing BT k Draw a perpendicular line l to the 40° downward angled layout curve, and the layout point a is the intersection point with the curve. k With ' as the center, and the corresponding a in the side projection view k b k Draw a circle with the length as the radius and intersect the perpendicular line l at b. k 'point, b' kPoint ' is the layout point of the upper intersection point at that location.

[0056] Continue to refer to Figure 4 As shown, in this embodiment, take the projection point bt4 of one of the upper intersection points, draw a perpendicular line l through point bt4 to the downward angle lofting curve 400, take the lofting point a4' of the lower intersection point as the center, draw a circle with the length of a4b4 corresponding to the side projection view as the radius and intersect the perpendicular line l at point b4', and point b4' is the lofting point of the upper intersection point at this position.

[0057] Then proceed to step S500. Specifically, based on the layout point b of the intersection point... k Point ' is used to obtain the lofting points b1', b2', b3'...b of the intersection point. k-1 Specifically, it means: taking the lofting point a of the intersection point. k-x Point 'x' satisfies 1 ≤ x ≤ k-1, with a k-x Point ' is the center of the circle, and the corresponding point a in the side projection view is... k-x b k-x Draw a circle with the length of b as the radius. k-x+1 Point ' is the center of the circle, with bt k-x bt k-x+1 Draw a circle with radius b, and the two circles intersect at point b. k-x Point '; x takes values ​​of 1, 2, 3...k-1 in sequence, and b can be obtained sequentially. k Lofting points b1', b2', b3'...b to the left of point '. k-1 '.

[0058] In this embodiment, the value of x can be 1, 2, or 3 in sequence. Specifically, first, x = 1, that is, the lofting point a3' of the lower intersection is taken. A circle is drawn with a3' as the center and the length of a3b3 in the side projection view as the radius. A circle is drawn with b4' as the center and the length of bt4bt3 as the radius. The two circles intersect at b3', which is the lofting point of the upper intersection adjacent to the left of b4'. Then, x = 2, that is, the lofting point a2' of the lower intersection is taken. A circle is drawn with a2' as the center and the length of a2b2 in the side projection view as the radius. A circle is drawn with b3' as the center and the length of bt3bt2 as the radius. The two circles intersect at b2', which is the lofting point of the upper intersection adjacent to the left of b3'. Finally, we take x = 3, which means we take the lofting point a1' of the intersection point. Using a1' as the center and the length of a1b1 in the side projection view as the radius, we draw a circle. Using b2' as the center and the length of bt2bt1 as the radius, we draw another circle. The two circles intersect at b1', which is the lofting point of the upper intersection point adjacent to the left of b2'. The above process sequentially yields the lofting points b1', b2', and b3' of all the upper intersection points to the left of b4'.

[0059] Furthermore, based on the layout point b of the intersection point... k Point b is the lofting point obtained from the intersection point. k+1 ', b k+2 ', b k+3 '...b n Specifically, it means: taking the lofting point a of the intersection point. k+y Point ', y satisfies 1≤y≤ny, with a k+y Point ' is the center of the circle, and the corresponding point a in the side projection view is... k+y b k+y Draw a circle with the length of b as the radius. k+y-1 Point ' is the center of the circle, with bt k+y-1 bt k+y Draw a circle with radius b, and the two circles intersect at point b. k+y Point '; y takes 1, 2, 3...nk in sequence, and we can obtain b in sequence. k Lofting point b of all the upper intersection points to the right of point ' k+1 ', b k+2 ', b k+3 '...b n '.

[0060] In this embodiment, the value of y can be 1 or 2 in sequence. Specifically, first, y = 1 is taken, that is, the lofting point a5' of the lower intersection is taken. A circle is drawn with a5' as the center and the length of a5b5 in the side projection view as the radius. A circle is drawn with b4' as the center and the length of bt4bt5 as the radius. The two circles intersect at b5', which is the lofting point of the upper intersection adjacent to the right of b4'. Then, y = 2 is taken, that is, the lofting point a6' of the lower intersection is taken. A circle is drawn with a6' as the center and the length of a6b6 in the side projection view as the radius. A circle is drawn with b5' as the center and the length of bt5bt6 as the radius. The two circles intersect at b6', which is the lofting point of the upper intersection adjacent to the right of b5'. The above process can sequentially obtain the lofting points b5' and b6' of all the upper intersection points to the right of point b4'.

[0061] After completing the above work, proceed to step S600. Smoothly connect the six upper intersection points b1', b2', b3', b4', b5', and b6' in sequence to form an upward-angled lofting curve 500. Connect a1'b1', a2'b2', a3'b3', a4'b4', a5'b5', and a6'b6' in sequence to form multiple transition rib lofting lines 200.

[0062] Furthermore, after drawing the upper angled lofting curve 500 and the lofting lines 200 of multiple transition ribs, take the lofting point b at the upper intersection point. j Point 'j' satisfies 1≤j≤n, with b j Starting from point ', and projecting the view from the side onto point b...j P j The length is given, and a line is drawn in a direction parallel to the lofting line 100 of the lower fold rib. The endpoint of the resulting line segment is denoted as P. j By taking 1, 2, 3...n in sequence, we can obtain multiple layout points P1', P2', P3'...P' at the intersection of the outer openings. n '.

[0063] In this embodiment, starting from b1', a line is drawn with length b1P1 in the side projection view and parallel to the lofting line 100 of the lower corner rib. The endpoint of the resulting line segment is denoted as P1'. Starting from b2', a line is drawn with length b2P2 in the side projection view and parallel to the lofting line 100 of the lower corner rib. The endpoint of the resulting line segment is denoted as P2'. Starting from b3', a line is drawn with length b3P3 in the side projection view and parallel to the lofting line 100 of the lower corner rib. The endpoint of the resulting line segment is denoted as... Starting at b4', draw a line with length b4P4 in the side projection view and parallel to the lofting line 100 of the lower corner rib. The endpoint of the resulting line segment is denoted as P4'. Starting at b5', draw a line with length b5P5 in the side projection view and parallel to the lofting line 100 of the lower corner rib. The endpoint of the resulting line segment is denoted as P5'. Starting at b6', draw a line with length b6P6 in the side projection view and parallel to the lofting line 100 of the lower corner rib. The endpoint of the resulting line segment is denoted as P6'. The above process can sequentially obtain the endpoints of six line segments: P1', P2', P3', P4', P5', and P6'.

[0064] Subsequently, the endpoints of the six line segments P1', P2', P3', P4', P5', and P6' are smoothly connected in sequence to obtain the loft line 700 for the outer edge of the hyperbolic angled plate.

[0065] Connect b1'P1', b2'P2', b3'P3', b4'P4', b5'P5', and b6'P6' in sequence to form multiple loft lines 300 for the upward-folding ribs. Finally, complete the drawing of the loft view of the hyperbolic angled plate.

[0066] The lofting method provided by this invention can accurately draw the lower corner lofting curve 400 and the upper corner lofting curve 500 when used for hyperbolic angled plates, effectively improving the lofting accuracy, reducing the deviation caused by approximating the curved angle as a straight angle, eliminating the need for additional allowances on the plates, and eliminating the need for trimming after processing, thereby improving production efficiency and saving costs.

[0067] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A lofting method applied to hyperbolic angled plates, characterized in that, The layout method mainly includes the following steps: S100. Establish a side projection view of the hyperbolic angled plate, and plot the multiple lower intersection points a1, a2, a3...a... n and multiple upper intersection points b1, b2, b3...b n Projected onto the side projection view; S200, corresponding to the side projection view in step S100, draw the lofting lines (100) of multiple downward folded corner ribs. S300, a1, a2, a3...a n The lofting points a1', a2', a3'...a' are projected onto the corresponding lofting line (100) of the lower folded corner rib to form multiple lower intersection points. n ', smoothly connect a1', a2', a3'……a in sequence. n 'To form a downward angled lofting curve (400); b1, b2, b3...b n Projecting them onto the extension of the lofting line (100) of the corresponding downward folded corner rib to form projection points bt1, bt2, bt3...bt of the upper intersection point n ; S400, Take the projection point bt of one of the upper intersection points. k Where 1≤k≤n; according to bt k Point b is the lofting point corresponding to the intersection point. k '; S500, Based on the layout point b of the upper intersection point. k Point ' is used to obtain the remaining lofting points b1', b2', b3'...b of the upper intersection points. k-1 ' and b k+1 ', b k+2 ', b k+3 '...b n '; S600, sequentially and smoothly connect b1', b2', b3'...b n To form an upward-angled lofting curve (500), connect a1'b1', a2'b2', a3'b3'...a n 'b n 'To form a loft line (200) for multiple transition ribs.

2. The layout method according to claim 1, characterized in that, In step S400, according to bt k Point b is the lofting point corresponding to the intersection point. k Specifically: Passing BT k Draw a perpendicular line l to the lower angle lofting curve (400), and take the lofting point a of the lower intersection point as the reference point. k With ' as the center, and the corresponding a in the side projection view k b k Draw a circle with length as the radius and intersect the perpendicular line l at b. k 'point, b' k 'point' is bt k The lofting point corresponding to the upper intersection point.

3. The layout method according to claim 1, characterized in that, In step S500, the stakeout point b is determined based on the upper intersection point. k Points b1', b2', b3', ..., b' are obtained from the lofting points of the intersection points. k-1 Specifically: Take the layout point a of the lower intersection point k-x Point 'x' satisfies 1 ≤ x ≤ k -1, with a k-x Point ' is the center of the circle, and the corresponding point a in the side projection view is... k-x b k-x Draw a circle with the length of b as the radius. k -x+1 Point ' is the center of the circle, with bt k-x bt k-x+1 Draw a circle with radius b, and the two circles intersect at point b. k-x Point '; x takes values ​​of 1, 2, 3...k-1 in sequence, and b can be obtained sequentially. k Lofting points b1', b2', b3'...b to the left of point '. k-1 '.

4. The layout method according to claim 1, characterized in that, In step S500, the stakeout point b is determined based on the upper intersection point. k Point b is the lofting point obtained from the intersection point. k+1 ', b k+2 ', b k+3 '...b n Specifically: Take the layout point a of the lower intersection point k+y Point ', y satisfies 1≤y≤ny, with a k+y Point ' is the center of the circle, and the corresponding point a in the side projection view is... k+y b k+y Draw a circle with the length of b as the radius. k +y-1 Point ' is the center of the circle, with bt k+y-1 bt k+y Draw a circle with radius b, and the two circles intersect at point b. k+y Point '; y takes 1, 2, 3...nk in sequence, and we can obtain b in sequence. k Lofting point b of all the upper intersection points to the right of point ' k+1 ', b k+2 ', b k+3 '...b n '.

5. The layout method according to claim 1, characterized in that, In step S200, drawing the lofting lines (100) of the multiple downward-folding ribs specifically involves: The lofting lines (100) of the plurality of the lower folded corner ribs are arranged at equal intervals along the width direction of the hyperbolic folded corner plate and extend along the length direction of the side projection view.

6. The layout method according to claim 1, characterized in that, Step S100 also includes: The multiple inner intersection points O1, O2, O3...O at the lower corner end of the hyperbolic angled plate are... n Projected onto the side projection view.

7. The layout method according to claim 6, characterized in that, In step S200, after the lofting lines (100) of the multiple downward-folding ribs are drawn, corresponding to the side projection view in step S100, O1, O2, O3...O n Projecting these points onto the corresponding lofting lines (100) of the lower folded ribs to form multiple lofting points O1', O2', O3'...O... at the intersection of the inner openings. n ', smoothly connect O1', O2', O3'...O in sequence. n 'The loft line (600) is used to form the inner opening line of the hyperbolic angle plate.

8. The layout method according to claim 1, characterized in that, Step S100 also includes: The multiple outer intersection points P1, P2, P3...P at the upper corner end of the hyperbolic angled plate are... n Projected onto the side projection view.

9. The layout method according to claim 8, characterized in that, After drawing the upper angle lofting curve (500) and the lofting lines (200) of the multiple transition ribs, take the lofting point b of the upper intersection point. j Point 'j' satisfies 1≤j≤n, with b j Starting from point ', and taking the side projection view as b... j P j The length is defined by drawing a line parallel to the lofting line (100) of the lower folded rib, and the endpoint of the resulting line segment is denoted as P. j By taking 1, 2, 3...n in sequence, we can obtain multiple layout points P1', P2', P3'...P' at the intersection of the outer openings. n '.

10. The layout method according to claim 9, characterized in that, Smoothly connect P1', P2', P3'...P' in sequence. n The outer opening line (700) of the hyperbolic angle plate is obtained sequentially; b1'P1', b2'P2', b3'P3'...b are connected sequentially. n 'P n 'To form a loft line (300) with multiple upward-folding ribs.

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