CN116451379A - Anchor part lofting method based on CATIA - Google Patents
Anchor part lofting method based on CATIA Download PDFInfo
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- CN116451379A CN116451379A CN202310441842.XA CN202310441842A CN116451379A CN 116451379 A CN116451379 A CN 116451379A CN 202310441842 A CN202310441842 A CN 202310441842A CN 116451379 A CN116451379 A CN 116451379A
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Abstract
The invention provides a lofting method of anchor parts based on CATIA, which comprises the following steps: s1, modeling a hawse pipe and determining a plane B where an anchor deck panel is located; s2, lofting a hawse pipe; s3, modeling an anchor platform coaming and an anchor platform panel; s4 setting out an anchor table coaming; s5, lofting the anchor deck panel; the invention utilizes CATIA function to automatically measure the actual length of the line segment required in the lofting and unfolding process, effectively overcomes the defects of low calculation efficiency and easy error existing in the traditional manual lofting, and effectively improves the lofting precision and the lofting efficiency of the anchor parts.
Description
Technical Field
The invention belongs to the technical field of anchor system design, and particularly relates to an anchor system part lofting method based on CATIA.
Background
Vessel mooring is an important system of vessels that directly affects the safety performance of such vessel berthing. When the anchor chain barrel and the anchor platform in the anchor part are processed and manufactured, the anchor chain barrel and the anchor platform are required to be lofted and unfolded, and the lofting precision and the lofting efficiency of the anchor chain barrel and the anchor platform directly influence the installation precision and the installation efficiency of the anchor system equipment. At present, the unfolded drawing of the hawse pipe and the anchor platform is obtained based on CAD two-dimensional drawing manual lofting, the actual length required in the lofting process needs to be calculated, the calculated amount is large, errors are easy to occur, and the lofting efficiency is greatly influenced.
Disclosure of Invention
In view of the above drawbacks, an object of the present invention is to provide a CATIA-based anchor part lofting method, which creates three-dimensional models of a hawse pipe, an anchor deck coaming, and an anchor deck panel based on CATIA software, and determines the lofting method of each part; meanwhile, the CATIA function is utilized to automatically acquire the real length of the line segment to be determined in the lofting process, so that errors caused by manual calculation are avoided, the real length acquiring efficiency is improved, and the lofting precision and lofting efficiency are ensured.
The invention provides a lofting method of anchor parts based on CATIA, wherein the anchor parts comprise a hawse pipe and an anchor table; the lofting method comprises the following steps:
s1, modeling a hawse pipe and determining a plane B of an anchor deck plate: creating a hull model in the CATIA; then, according to the hawse pipe positioning information, the hawse pipe inner diameter and the included angle between the hawse pipe center line and the anchor deck panel, creating a hawse pipe center line in CATIA, drawing a plane A perpendicular to the hawse pipe center line, and further determining a plane B; then, drawing the inner profile of the section of the hawse pipe in the plane A, and completing modeling of the inner surface of the hawse pipe;
s2, setting out a hawse pipe: a first positioning point for equally dividing the inner profile 4n of the section is marked in the plane A; then, each first positioning point is used as a first positioning line parallel to the central line of the hawse pipe, so that two ends of each first positioning line are respectively intersected with the upper port end face of the hawse pipe and the lower port end face of the hawse pipe; connecting two intersecting points positioned on the same first positioning line to determine a prime line of the hawse pipe; acquiring the real length of each element wire, the relative distance of each element wire in the direction of the central line of the hawse pipe and the real length of an arc line between two adjacent first positioning points by using the CATIA function, obtaining the unfolding diagram of the hawse pipe, and finishing the lofting and unfolding of the hawse pipe;
s3, modeling an anchor platform coaming and an anchor platform panel: drawing the outline of the lower opening of the anchor table panel in a plane B according to the size information of the anchor table panel; then making a cutting plane C perpendicular to the plane B and passing through the central line of the hawse pipe in the plane B; performing m-time rotary copying on the cutting plane C by taking the vertical line of the plane B as the center to obtain a plurality of cutting planes D; determining the element line of the anchor platform in each cutting plane according to the detailed drawing of the section of each anchor platform and the intersection point of the outer contour line of the lower opening of the anchor platform panel and each cutting plane; sequentially connecting each anchor platform element wire by using a multi-section curved surface command of CATIA to form an anchor platform outer surface model; then vertically shifting the plane B to the thickness value of the anchor deck plate along the direction of the ship body to obtain a plane E; splitting the anchor platform outer surface model into an anchor platform coaming outer surface model and an anchor platform panel outer surface model through a plane E;
s4, lofting an anchor platform coaming: determining each element line of the anchor platform coaming according to the intersection point of the anchor platform element line and the upper and lower openings of the anchor platform coaming outer surface model; the diagonal arc of the anchor platform coaming is additionally arranged, the diagonal arc is matched with each element wire of the anchor platform coaming to split the anchor platform coaming into a plurality of triangular curved plates, then the CATIA function is utilized to obtain the actual length of each edge wire on each triangular curved plate, the actual shape of each triangular curved plate on a plane is obtained, further an expansion diagram of the anchor platform coaming is obtained, and the lofting expansion of the anchor platform coaming is completed;
s5, lofting the anchor deck panel: and taking the plane B as a reference plane, projecting intersecting lines of the outer surface model of the anchor deck panel, the hawse pipe and the plane B and the plane E to obtain an unfolding diagram of the anchor deck panel, and finishing lofting and unfolding of the anchor deck panel.
Preferably, at least one contour plane parallel to the plane B is made, so that the contour plane intersects with the outer surface model of the anchor platform coaming to obtain a contour line; and then taking the plane B as a reference plane to carry out projection to obtain a template diagram for manufacturing the anchor platform coaming.
Preferably, the hawse pipe positioning information comprises any two coordinate value information among coordinate values of intersection points P1 of the hawse pipe center line and the main deck, coordinate values of intersection points P2 of the hawse pipe center line and the outer plate, and coordinate values of intersection points P3 of the hawse pipe center line and the anchor deck panel.
Preferably, the modeling of the hawse pipe, the modeling of the anchor deck enclosure, the modeling of the anchor deck panel, the lofting and the deploying of the hawse pipe, the lofting and the deploying of the anchor deck enclosure and the lofting and the deploying of the anchor deck panel are realized based on the VB program.
The three-dimensional model of the hawse pipe, the anchor platform panel and the anchor platform coaming is built based on the CATIA, and the actual lengths of all line segments required by lofting are automatically obtained based on the built three-dimensional model, so that the defects of large actual length calculation error and low actual length calculation efficiency in the traditional manual lofting are effectively overcome, the lofting precision and lofting efficiency of anchor parts are improved, and a foundation is laid for rapid machining and manufacturing of the anchor parts.
Drawings
FIG. 1 is a side view of an mooring apparatus in a hull;
FIG. 2 is a schematic forward view of the anchor station (i.e., schematic A in FIG. 1);
FIG. 3 is a detail of each section of FIG. 2;
FIG. 4 is an isometric view of the outer profile of the hawse pipe cross section;
FIG. 5 is an expanded view of the hawse pipe;
FIG. 6 is a schematic view of various cut planes;
FIG. 7 is a schematic diagram of a generated model of the outer surface of the anchor platform;
FIG. 8 is an anchor deck coaming exterior surface model and anchor deck panel exterior surface model obtained by plane E splitting;
FIG. 9 is a schematic diagram of a sample-bracing-method deployment anchor deck enclosure;
FIG. 10 is an expanded view of an anchor block shroud;
FIG. 11 is an expanded view of the anchor deck plate;
FIG. 12 is a template diagram of anchor block coaming fabrication.
Reference numerals illustrate:
upper deck 01, two decks 02, planking 03, hawse pipe 1, anchor platform bounding wall 21, anchor platform panel 22, anchor platform molded lines 2a, anchor lips 3.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to be limiting.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "center", "vertical", "horizontal", etc. is based on the positional or positional relationship shown in the drawings, it is used merely for convenience in describing the invention and to simplify the description and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention.
The invention provides a lofting method of anchor parts based on CATIA, wherein the anchor parts comprise a hawse pipe 1 and an anchor platform, and the anchor platform comprises an anchor platform coaming 21 and an anchor platform panel 22; the lofting method comprises the following steps:
s1, modeling the hawse pipe 1 and determining a plane B of the anchor deck plate 22: creating a hull model in the CATIA; then, according to the hawse pipe positioning information, the hawse pipe inner diameter, the hawse pipe plate thickness, the included angle between the hawse pipe center line and the anchor deck panel 22, creating a hawse pipe center line in CATIA, drawing a plane A perpendicular to the hawse pipe center line, and further determining a plane B; then, drawing the inner profile of the section of the hawse pipe in the plane A, and completing modeling of the hawse pipe 1;
FIGS. 1-3 are partial drawings of an anchor schematic diagram, and in FIG. 1 are marked with a hawse pipe inner diameter 2R1, hawse pipe plate thicknesses d1 and d2 (i.e., hawse pipe 1 is composed of an upper arc plate and a lower arc plate), an included angle θ between the hawse pipe center line and anchor deck panel 22, and hawse pipe positioning information; the hawse pipe positioning information comprises coordinate values of an intersection point P1 of the hawse pipe center line and the main deck 01, coordinate values of an intersection point P2 of the hawse pipe center line and the outer plate 03 and coordinate values of an intersection point P3 of the hawse pipe center line and the anchor deck panel 22, and the position of the hawse pipe center line can be determined according to coordinate value information of any two points in the intersection points P1-P3.
Taking the coordinate values of the inner diameter 2R1 of the anchor cylinder, the included angle theta between the center line of the anchor cylinder and the anchor deck plate 22, and the intersection points P1 and P3 as an example, the steps of determining the plane B and modeling the anchor cylinder 1 are described as follows: creating a hawse pipe center line in the CATIA according to coordinate value information of the intersection points P1 and P3; making a plane A perpendicular to the central line of the hawse pipe by the point P3; then, crossing the intersection point P1 and the intersection point P3 to serve as a vertical plane O, and crossing the intersection point P3 to serve as a vertical line segment L perpendicular to the vertical plane O; then, according to the included angle theta between the central line of the hawse pipe and the anchor deck plate 22, the plane A is rotated and copied by taking the vertical line section L as the central line to obtain a plane B where the lower opening of the anchor deck plate 22 is positioned; drawing the inner profile of the section of the hawse pipe 1 in the plane A by taking the intersection point P3 as the center of a circle and R1 as the radius, stretching the drawn inner profile of the section to obtain a stretched body, and trimming the stretched body by using the upper surface of the main deck 01 and the plane B to determine the upper opening position and the lower opening position of the hawse pipe 1 to obtain a final hawse pipe inner surface model;
s2, setting out a hawse pipe: a first positioning point for equally dividing the inner profile 4n of the section is marked in the plane A; then, each first positioning point is used as a first positioning line parallel to the central line of the hawse pipe, so that two ends of each first positioning line are respectively intersected with the upper port end face of the hawse pipe 1 and the lower port end face of the hawse pipe 1; connecting two intersecting points positioned on the same first positioning line to determine the element line of the hawse pipe 1; acquiring the real length of each element wire, the relative distance of each element wire in the direction of the central line of the hawse pipe and the real length of an arc line between two adjacent first positioning points by using the CATIA function, obtaining the unfolding diagram of the hawse pipe 1, and finishing the lofting and unfolding of the hawse pipe 1;
as shown in fig. 4, 2n (n is a positive integer) auxiliary lines passing through the point P3 are made in the plane a; the included angles of two adjacent auxiliary lines are equal; one auxiliary line is positioned at the butt joint position of the two arc-shaped plates of the hawse pipe 1; each auxiliary line is intersected with the inner profile of the section to obtain first positioning points 1-24; then, each first positioning point is used as a first positioning line parallel to the central line of the hawse pipe; connecting the first positioning line with the intersection point of the upper opening end surface of the hawse pipe 1 and the lower opening end surface of the hawse pipe 1 to obtain element lines 1-24 of the hawse pipe 1; then the measurement function of CATIA is utilized to obtain the real length of each element wire, the relative distance of each element wire in the direction of the central line of the hawse pipe (the relative distance of the upper end point of each element wire or the relative distance of the lower end point of each element wire) and the real length of the arc line between two adjacent first positioning points, and a lofting and unfolding diagram (shown in figure 5) of two arc plates on the hawse pipe 1 is drawn
S3, modeling an anchor platform coaming 21 and an anchor platform panel 22: drawing a lower mouth outer contour line of the anchor deck plate 22 in a plane B according to the size information of the anchor deck plate 22; then making a cutting plane C perpendicular to the plane B and passing through the central line of the hawse pipe in the plane B; performing m-time rotary copying on the cutting plane C by taking the vertical line of the plane B as the center to obtain a plurality of cutting planes D; determining the element line of the anchor platform in each cutting plane according to the detailed drawing of the section of each anchor platform and the intersection point of the outer contour line of the lower opening of the anchor platform panel and each cutting plane; using CATIA multi-section curved surface command to connect each element wire of the anchor platform to form anchor platform outer surface model; then vertically shifting the plane B to the thickness value of the anchor deck plate along the direction of the ship body to obtain a plane E; splitting the anchor platform outer surface model into an anchor platform coaming outer surface model and an anchor platform panel outer surface model through a plane E;
as shown in fig. 2 and 3, the anchor system schematic diagram shows the size information of the anchor deck plate 22 (specifically, the outer contour size of the lower opening of the anchor deck plate), the number of sections of the anchor deck, and the included angle β between the anchor deck plate 22 and the anchor deck profile 02 in each section.
Modeling the anchor deck coaming 21 and the anchor deck panel 22 is as shown in fig. 6-8, and firstly, drawing an outline of the lower opening of the anchor deck panel in a plane B by taking a point P3 as a center; then making a cutting plane C (corresponding to 1-9 sections in FIG. 2) perpendicular to the plane B and passing through the center line of the hawse pipe in the plane B, and then carrying out m-time rotary copying on the cutting plane C by taking the perpendicular line of the plane B passing through the point P3 as the center (m+1 is the number of sections in FIG. 2) to obtain a plurality of cutting planes D, wherein the included angle of two adjacent cutting planes is 360 degrees (m+1); each cutting plane is intersected with a pre-drawn outline of the lower opening of the anchor deck plate to obtain stations 1-16 positioned on the outline of the lower opening of the anchor deck plate; then, according to the included angle between the anchor platform panel 22 and the anchor platform molded line 2a in each sectional plane in each sectional view, drawing a corresponding anchor platform molded line by taking a corresponding first site as a base point, wherein each anchor platform molded line intersects with the outer edge of the outer plate, and each site 1' -16 ' positioned on the outer contour line of the upper opening of the anchor platform coaming is determined, so that each anchor platform element line (namely 1-1 ' line segment, 2-2 ' line segment, … …, 16-16 ' line segment in FIG. 7) is obtained; then, sequentially connecting each anchor platform element wire by utilizing a multi-section curved surface command of CATIA to form an anchor platform outer surface model; then vertically shifting the plane B to the thickness value of the anchor deck plate along the direction of the ship body to obtain a plane E; splitting an anchor platform outer surface model into an anchor platform coaming outer surface model and an anchor platform panel outer surface model through a plane E, and simultaneously splitting an anchor platform element wire into an anchor platform coaming element wire and an anchor platform panel element wire;
s4, lofting an anchor platform coaming: determining each element line of the anchor platform coaming 21 according to the intersection point of the anchor platform element line and the upper and lower openings of the anchor platform coaming outer surface model; adding diagonal arcs of the anchor platform coaming, which are matched with all plain wires of the anchor platform coaming 21 to split the anchor platform coaming 21 into a plurality of triangular curved plates, and then obtaining the actual length of each side line on each triangular curved plate by using a CATIA function to obtain the actual shape of each triangular curved plate on a plane, further obtaining an unfolding diagram of the anchor platform coaming 21, and finishing lofting and unfolding of the anchor platform coaming 21;
as shown in fig. 8, the plane E intersects with each anchor platform plain line to obtain each site 1 'to 16' on the outer contour line of the lower mouth of the anchor platform panel (i.e. the intersection point of the anchor platform plain line and the upper mouth of the anchor platform coaming outer surface model); then the 1'-1 "line segment, 2' -2" line segment, … …, 16 '-16 "line segment are each element line of the anchor deck enclosure 21, and the 1' -1 line segment, 2 '-2 line segment, … …, 16' -16 line segment are each element line of the anchor deck panel 22; each element line of the anchor platform coaming 21 splits the anchor platform coaming 21 into a plurality of quadrilateral curved plates, then makes diagonal lines of the quadrilateral curved plates, and projects the diagonal lines onto the curved surface of the anchor platform coaming 21 to obtain diagonal arcs, so that the corresponding quadrilateral curved plates are split into two triangular curved plates through the diagonal arcs; automatically acquiring the real length of the element line of each anchor platform coaming, the real length of the contour line (arc line) between two adjacent stations on the same outer contour line and the real length of the diagonal arc line by using a CATIA measurement function; then, as shown in FIG. 9, drawing a real length segment of a 1 '-1' prime line, then drawing an arc by taking the real length of the 1'-2' contour line as a radius and intersecting the arc drawn by taking the 1 'as the center and the real length of the 1' -2 'diagonal arc as the radius, and determining the 2' position; then, the contour line full length of 1 'and 1' -2 'is taken as the center of a circle, and is used as the radius to draw an arc, so that the contour line full length of 2' -2 'is taken as the center of a circle, and the arc is intersected with the arc drawn by taking the prime line full length of 2' -2 'as the radius, the position of 2' is determined, and the like, so as to obtain the real shape of each triangle, and further obtain the unfolded view of the anchor coaming 21 (shown in fig. 10).
S5, lofting the anchor deck panel: and taking the plane B as a reference plane, projecting an outer surface model of the anchor deck plate 22, a prime line of the anchor deck plate 22 and intersecting lines of the hawse pipe 1 and the planes B and E to obtain an unfolding diagram (shown in fig. 10) of the anchor deck plate 22, and finishing lofting and unfolding of the anchor deck plate 21.
Further, taking the plane B as a base surface, and making at least one contour surface parallel to the plane B, wherein each contour surface is intersected with the outer surface of the anchor platform coaming 21 to obtain a contour line; and then taking the plane B as a reference plane to project to obtain a template diagram for manufacturing the anchor platform coaming shown in fig. 11, so as to manufacture a template for checking whether the anchor platform coaming workpiece is qualified according to the template diagram.
The modeling of the hawse pipe 1, the anchor platform coaming 21 and the anchor platform panel 22 can be realized through VB secondary development, and can also be realized by using the knowledge engineering carried by CATIA; the method is not limited to this, and VB secondary development is preferably adopted in the embodiment.
The VB secondary development mainly comprises two methods: the method and the device for accessing the CATIA macro program in the process and accessing the CATIA macro program outside the process are characterized in that the method and the device for accessing the CATIA macro program outside the process are preferably selected, and the specific principle is as follows: editing a modeling window in VB, writing codes for generating corresponding models in CATIA, when required design parameters are input into the modeling window, the VB calls the API parameters of the CATIA according to the input parameter data, and the parameterized geometric model is generated in the CATIA through a written generating program; when the design parameters are changed, the VB program automatically realizes the update of the parameterized model.
In order to quickly realize the lofting of anchor parts under different design parameters, a lofting program for realizing the spread drawings of the hawse pipe 1, the anchor platform coaming 21 and the anchor platform panel 22 on the basis of VB (visual basic) is written in CATIA; when the required design parameters are input into a modeling window, VB calls the API parameters of CATIA according to the input parameter data, the parameterized geometric model is generated in the CATIA through a written generating program, and the generated parametric geometric model is lofted and unfolded through a written lofting program.
Of course, the obtaining of the template map for manufacturing the anchor platform coaming can be obtained based on the VB program.
The modeling and lofting expansion of the hawse pipe, the anchor platform coaming and the anchor platform panel are realized based on VB secondary development of CATIA, the problems of large calculated amount and easy calculation errors in lofting expansion of traditional anchor parts are effectively solved, and lofting precision and lofting efficiency are greatly improved.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (4)
1. An anchor part lofting method based on CATIA, wherein the anchor part comprises a hawse pipe and an anchor table; the lofting method is characterized by comprising the following steps of:
s1, modeling a hawse pipe and determining a plane B of an anchor deck plate: creating a hull model in the CATIA; then, according to the hawse pipe positioning information, the hawse pipe inner diameter and the included angle between the hawse pipe center line and the anchor deck panel, creating a hawse pipe center line in CATIA, drawing a plane A perpendicular to the hawse pipe center line, and further determining a plane B; then, drawing the inner profile of the section of the hawse pipe in the plane A to finish modeling of the inner surface of the hawse pipe;
s2, setting out a hawse pipe: a first positioning point for equally dividing the inner profile 4n of the section is marked in the plane A; then, each first positioning point is used as a first positioning line parallel to the central line of the hawse pipe, so that two ends of each first positioning line are respectively intersected with the upper port end face of the hawse pipe and the lower port end face of the hawse pipe; connecting two intersecting points positioned on the same first positioning line to determine a prime line of the hawse pipe; acquiring the real length of each element wire, the relative distance of each element wire in the direction of the central line of the hawse pipe and the real length of an arc line between two adjacent first positioning points by using the CATIA function, obtaining the unfolding diagram of the hawse pipe, and finishing the lofting and unfolding of the hawse pipe;
s3, modeling an anchor platform coaming and an anchor platform panel: drawing the outline of the lower opening of the anchor table panel in a plane B according to the size information of the anchor table panel; then making a cutting plane C perpendicular to the plane B and passing through the central line of the hawse pipe in the plane B; performing m-time rotary copying on the cutting plane C by taking the vertical line of the plane B as the center to obtain a plurality of cutting planes D; determining the element line of the anchor platform in each cutting plane according to the detailed drawing of the section of each anchor platform and the intersection point of the outer contour line of the lower opening of the anchor platform panel and each cutting plane; sequentially connecting each anchor platform element wire by using a multi-section curved surface command of CATIA to form an anchor platform outer surface model; then vertically shifting the plane B to the thickness value of the anchor deck plate along the direction of the ship body to obtain a plane E; splitting the anchor platform outer surface model into an anchor platform coaming outer surface model and an anchor platform panel outer surface model through a plane E;
s4, lofting an anchor platform coaming: determining each element line of the anchor platform coaming according to the intersection point of the anchor platform element line and the upper and lower openings of the anchor platform coaming outer surface model; the diagonal arc of the anchor platform coaming is additionally arranged, the diagonal arc is matched with each element wire of the anchor platform coaming to split the anchor platform coaming into a plurality of triangular curved plates, then the CATIA function is utilized to obtain the actual length of each edge wire on each triangular curved plate, the actual shape of each triangular curved plate on a plane is obtained, further an expansion diagram of the anchor platform coaming is obtained, and the lofting expansion of the anchor platform coaming is completed;
s5, lofting the anchor deck panel: and taking the plane B as a reference plane, projecting intersecting lines of the outer surface model of the anchor deck panel and the hawse pipe and the planes B and E to obtain an unfolding diagram of the anchor deck panel, and finishing lofting and unfolding of the anchor deck panel.
2. The method for setting out anchor parts based on CATIA according to claim 1, wherein at least one contour plane parallel to the plane B is made, and each contour plane is intersected with the outer surface of the anchor block coaming to obtain a contour line; and then taking the plane B as a reference plane to carry out projection to obtain a template diagram for manufacturing the anchor platform coaming.
3. The method for setting out anchor parts based on CATIA according to claim 1, wherein said anchor positioning information comprises any two coordinate value information among coordinate values of intersection point P1 of the anchor center line and main deck, coordinate values of intersection point P2 of the anchor center line and outer plate, coordinate values of intersection point P3 of the anchor center line and anchor deck plate.
4. A CATIA-based anchor part lofting method according to claim 1 or 3, wherein the modeling of the hawse pipe, the modeling of the anchor deck panel, the lofting and the lofting of the hawse pipe, the lofting and the lofting of the anchor deck panel are implemented based on the VB program.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310441842.XA CN116451379A (en) | 2023-04-23 | 2023-04-23 | Anchor part lofting method based on CATIA |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310441842.XA CN116451379A (en) | 2023-04-23 | 2023-04-23 | Anchor part lofting method based on CATIA |
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| CN116451379A true CN116451379A (en) | 2023-07-18 |
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| CN202310441842.XA Pending CN116451379A (en) | 2023-04-23 | 2023-04-23 | Anchor part lofting method based on CATIA |
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