Automatic generation method of plate right-angle connection structure of 3D design program

Abstract

The invention provides an automatic generation method of a plate right-angle connection structure of a 3D design program, which comprises the following steps: selecting a special bolt and nut combination body in a fastener library, clicking two plate joint parts in a drawing area until bolts and nuts are automatically matched to be proper, automatically generating a plate edge gap 11-2 capable of containing the bolts and the nuts in a first plate 1-2, and automatically generating a plate edge gap 11-2 in a second plate 1-2; a positioning hole 21-2 and a bolt mounting hole 22-2 are automatically generated in the second plate 2-2, the characteristics can be wholly moved by moving the proxy icon 4, and parameters can be edited at any time. Under the support of the widely applied metal plate laser cutting technology, the design work of right-angle connection between the plates can become simple and reliable, the design efficiency is remarkably improved, and the error rate is reduced.

Description

Technical Field

[0001] The present invention pertains to the manipulation of 3D models or images for computer graphics, and more particularly to the automatic generation, arrangement and positioning of specific 3D fasteners and associated structures. Background Art

[0002] In the patent application entitled "Right-angle connection structure of plate and special nut suitable therefor" filed on the same day as the present invention, two new types of right-angle connection structures of plate are described, wherein the first structure is as follows: Figures 1 to 4 As shown, it comprises a first plate member 1 and a second plate member 2; the plate edge of the first plate member 1 has at least one plate edge notch 11;

[0003] The plate edge notch 11 includes a neck section 111 and a belly section 112, and the belly section 112 of the plate edge notch has a width greater than that of the neck section 111;

[0004] The belly section 112 of the plate edge notch can be inserted into a nut 32 of matching specifications, and the locking surface 322 of the nut is abutted by the step 113 between the neck section 111 and the belly section 112 of the plate edge notch;

[0005] The second plate has a bolt mounting hole 22;

[0006] When the plate edge notch 11 of the first plate 1 is aligned with the bolt mounting hole 22 of the second plate 2, the bolt rod 311 of the bolt 31 of matching specifications can pass through the bolt mounting hole 22 of the second plate 2, and then penetrate into the neck section 111 of the plate edge notch of the first plate 1, and then be screwed into the screw hole of the nut 32 that has been inserted into the belly section 112 of the plate edge notch of the second plate 2.

[0007] The plate edge of the first plate member 1 where the plate edge notch 11 is located also has at least one plate edge positioning convex edge 12;

[0008] The second plate 2 has at least one positioning hole 21;

[0009] When the plate edge positioning protrusion 12 of the first plate 1 is aligned with and inserted into the positioning hole 21 at the corresponding position of the second plate 2 , the plate edge notch 11 of the first plate 1 is also aligned with the bolt mounting hole 22 at the corresponding position of the second plate 2 .

[0010] The second structure is composed of Figures 5 to 7 As shown,

[0011] The first plate 1-2 comprises at least two adjacent plate edge positioning convex edges 12-2, and a neck section 111-2 of at least one of the plate edge notches 11-2 is located between the two plate edge positioning convex edges 12-2;

[0012] The second plate member 2-2 includes at least two adjacent positioning holes 21-2, at least one bolt mounting hole 22-2 is located between these two positioning holes 21-2, and these two positioning holes 21-2 communicate with this bolt mounting hole 22-2 and merge;

[0013] When the plate edge of the first plate member 1-2 including the above-mentioned plate edge notch 11-2 and plate edge positioning convex edge 12-2 is butted against the second plate member 2-2 at a right angle, the above-mentioned two plate edge positioning convex edges 12-2 of the first plate member 1-2 can be inserted into the above-mentioned two positioning holes 21-2 at the corresponding positions of the second plate member 2-2, the above-mentioned plate edge notch 11-2 of the first plate member 1-2 can be aligned with the above-mentioned bolt mounting hole 22-2 at the corresponding position of the second plate member 2-2, and a bolt 31 with a matching specification can pass through the bolt mounting hole 22-2 of the second plate member 2-2, then penetrate into the neck section 111-2 of the plate edge notch of the first plate member 1-2, and then be screwed into the screw hole of the nut 32 that has been inserted into the abdominal section 112-2 of the plate edge notch of the second plate member 2-2.

[0014] Although this new plate member connection technology can use laser cutting technology to simply and conveniently achieve right-angle connection and locking of plate members, when related parts are modeled and designed in a 3D design program, it is necessary to draw an accurate dimension profile that meets the composite requirements through a sketch drawing step at a specific position of the 3D model of the related plate member, and then use the cutting and stretching step to generate features such as plate edge notches, positioning convex edges, positioning holes, bolt mounting holes, etc., and align the positions of these related features one by one. When designers perform these operations, even very slight dimension errors or position errors may cause the related plate members after laser cutting to become scrap. For a complete sheet metal base frame or sheet metal box body, its structural shape may be very complex, and it is necessary to perform inefficient and boring repetitive sketch drawing and dimension calculation work on a large number of plate member connection structures, which is very prone to errors. Moreover, due to laser cutting of different plate thicknesses and different materials, its cutting processing errors may not be the same. As a designer, it may not be clear how much reserved tolerance is required to meet the dimension marking requirements of related mating structures. Therefore, even if the mutual position relationship of the related dimensions is correct, the dimension errors given in the sketch may be too large or too small, resulting in difficult assembly of the processed parts or too large gaps, and the parts have looseness that should not exist. These problems will obviously seriously affect the application and promotion of this new sheet metal connection technology. Summary of the Invention

[0015] In order to be able to draw related features efficiently, simply and reliably in a 3D design program when applying the above new technology and reduce errors, the present invention proposes an automatic generation method for the right-angle connection structure of plate members in a 3D design program,

[0016] This method includes the following steps:

[0017] Step 1, enter the panel assembly mode.

[0018] Step 2, in the drawing area, align and mate one edge section of the first panel 1 with the second panel 2 at a right angle.

[0019] It is characterized in that:

[0020] Step 3, select a bolt-nut assembly 3 that matches the current panel thickness in the dedicated fastener library.

[0021] Step 4, in the drawing area, when the bolt-nut assembly 3 is moved to the joint of the first panel 1 and the second panel 2, the axis of the bolt of the bolt-nut assembly 3 automatically coincides with the mid-plane of the thickness of the first panel 1, and is automatically perpendicular to the surface of the second panel 2. Also, the locking surface 3121 of the bolt head automatically coincides with the surface of the second panel 2, and a pair of side surfaces 321 of the nut are automatically perpendicular to the surface of the first panel 1. And a panel edge notch 11 is automatically generated on the edge of the first panel 1. The panel edge notch 11 includes a neck section 111 and a web section 112. The center line of the neck section 111 automatically coincides with the center line of the bolt of the bolt-nut assembly 3, and the width dimension of the neck section 111 automatically matches the bolt diameter dimension of the bolt-nut assembly 3. The center line of the web section 112 automatically coincides with the center line of the bolt of the bolt-nut assembly 3, and the preset contour dimension of the web section 112 automatically matches the outer contour dimension of the nut 32 of the bolt-nut assembly 3. And a bolt mounting hole 22 is automatically generated on the second panel 2. The axis of the bolt mounting hole 22 automatically coincides with the axis of the bolt-nut assembly 3. When the position of the bolt-nut assembly 3 is adjusted by moving it along the joint line of the first panel 1 and the second panel 2, the positions of the panel edge notch 11 and the bolt mounting hole 22 automatically follow the movement.

[0022] Preferably,

[0023] It may further include an optional Step 5. When enabling this step, first start the positioning convex edge drawing tool, then move the mouse to the joint of the first panel 1 and the second panel 2 in the drawing area, and a positioning convex edge 12 is automatically generated at the edge of the first panel 1. At the same time, a positioning hole 21 whose position and shape match the above-mentioned positioning convex edge 12 is automatically generated on the second panel 2. The dimensional parameters of the positioning convex edge 12 can be modified.

[0024] Preferably,

[0025] In the above-mentioned Step 5, when the positioning convex edge 12 is automatically generated at the edge of the first panel 1, a proxy icon 4 of the positioning convex edge 12 is automatically displayed beside the positioning convex edge 12. The proxy icon 4 can be clicked by the mouse and moved along the joint line of the first panel 1 and the second panel 2. And when the proxy icon 4 is moved, the position of the positioning convex edge 12 it represents moves synchronously.

[0026] Preferably,

[0027] The proxy icon described above is a strip-shaped proxy icon 4 parallel to the positioning convex edge 12. When the two ends of the strip-shaped proxy icon 4 are clicked by the mouse and moved along the joint line direction of the first plate member 1-2 and the second plate member 2-2, the length of the strip-shaped proxy icon 4 will change accordingly, and the length of the positioning convex edge 12 it represents will also change proportionally.

[0028] Or, preferably,

[0029] In step 4 described above, when a plate edge notch 11-2 is generated at the plate edge position of the first plate member 1-2 where the mouse 5 is located, two positioning convex edges 12-2 are automatically generated on both sides of the plate edge notch 11-2. At the corresponding positions on the second plate member 2-2, two positioning holes 21-2 that match the positions and shapes of the above two positioning convex edges 12-2 and a bolt mounting hole 22-2 whose axis coincides with the axis of the bolt-nut assembly 3 are automatically generated at the same time. These two positioning holes 21-2 and the bolt mounting hole 22-2 are merged and connected to each other, and a special-shaped long hole is generated according to the preset contour line.

[0030] Preferably,

[0031] In step 4 described above, when a positioning convex edge 12-2 is automatically generated at the edge of the first plate member 1-2, a proxy icon 4 of the positioning convex edge 12-2 is automatically displayed beside the positioning convex edge 12-2. The proxy icon 4 can be clicked by the mouse and moved along the joint line direction of the first plate member 1-2 and the second plate member 2-2; and when the proxy icon 4 is moved, the positioning convex edge 12-2 it represents moves accordingly.

[0032] Preferably,

[0033] When one end of the strip-shaped proxy icon 4 is clicked by the mouse and moved along the joint line direction of the first plate member 1 and the second plate member 2, the length of the strip-shaped proxy icon 4 will change accordingly, and the total length of the two positioning convex edges 12-2 it represents will also change proportionally.

[0034] In the 3D program, after adding the method described in the present invention, designers can design the connection structure of relevant plate members accurately and quickly in the working area, which not only greatly reduces the work intensity of designers, but also significantly reduces the dimensional errors of relevant structures, thus achieving the invention purpose.

[0035] In this text, the term "plate part" includes rigid plate-shaped parts with straight edges made of metal plates or non-metal plates. Obviously, the "plate part" should not include thin plates that are difficult to apply the present invention. The terms "first" and "second" are temporary names used to distinguish different plate parts. The term "front" refers to the direction pointing to the observer when observing the components shown in the cited view, which is called "front", and the direction facing away from the observer is called "rear". The terms "upper", "lower", "left", and "right" are based on the up, down, left, and right of the cited view. The term "bottom" refers to the lowermost end of a specific component in the cited view in the attached drawing, and the "top" refers to the uppermost end of a specific component in the cited view in the attached drawing. The above terms are only for facilitating the accurate description of the relative positional relationship of each part of the present invention, rather than indicating or implying that the components referred to must have a specific orientation, or must be combined and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0036] The term "edge section" refers to the edge cutting surface of a plate part; the term "locking surface" refers to the structural surface of a nut or screw nut that directly contacts and locks with the plate part to be locked. Unless otherwise specified, the term "mouse" refers to the mouse pointer cursor that appears in the working area. The term "joining" means that the edge section of one plate part closely fits with the plate surface of another plate part. The term "joining line" refers to the intersection line of two mutually joined plate parts. The term "mid-thickness plane" refers to the central virtual plane located between the front and back surfaces of a plate part.

[0037] The more specific technical features and beneficial effects of the present invention will be further described in detail in the following embodiments in conjunction with the attached drawings. Description of the Drawings

[0038] Figure 1 、 Figure 2 is an exploded three-dimensional view of the assembly structure of a right-angle connection structure of plate parts introduced in the background art;

[0039] Figure 3 、 Figure 4 is Figure 1 the three-dimensional view of the assembled body of the structure shown;

[0040] Figure 5 、 Figure 6 is an exploded three-dimensional view of the assembly structure of another right-angle connection structure of plate parts introduced in the background art;

[0041] Figure 7 is Figure 5 the three-dimensional view of the assembled body of the structure shown;

[0042] Figure 8 is the three-dimensional view of a bolt-nut combination mentioned in the present invention;

[0043] Figure 9It is a three-dimensional demonstration diagram of a bolt-nut assembly in the working area of Embodiment 1 of the present invention when it is automatically attached and moved along the joint line of two plate members;

[0044] Figure 10 It is Figure 9 a three-dimensional diagram of the assembly effect of the plate members after the bolt-nut assembly shown has been moved into place;

[0045] Figure 11 It is a three-dimensional demonstration diagram of a positioning convex edge structure in the working area of Embodiment 2 of the present invention when it is automatically formed, positioned, and moved at the joint line of two plate members;

[0046] Figure 12 It is Figure 11 an exploded three-dimensional diagram after vertical separation of two plate members that have been automatically notched, provided with positioning holes, and bolt mounting hole structures;

[0047] Figure 13 It is a three-dimensional demonstration diagram of a composite structure such as a pair of positioning convex edges and plate edge notches in the working area of Embodiment 3 of the present invention when it is automatically formed, positioned, and moved at the joint line of two plate members;

[0048] Figure 14 It is Figure 13 an exploded three-dimensional diagram after vertical separation of two plate members that have been automatically notched, provided with positioning holes, and bolt mounting hole structures.

[0049] Reference numerals:

[0050] 1 - First plate member, 2 - Second plate member, 11 - Plate edge notch, 111 - Neck section of the plate edge notch, 112 - Abdominal section of the plate edge notch,

[0051] 113 - Step of the plate edge notch, 114 - Neck side wall of the plate edge notch, 115 - Abdominal side wall of the plate edge notch, 12 - Positioning convex edge,

[0052] 121 - Oblique angle of the positioning convex edge, 21 - Positioning hole, 22 - Bolt mounting hole, 3 - Bolt-nut assembly, 31 - Bolt,

[0053] 311 - Bolt rod, 312 - Bolt head, 3121 - Locking surface of the bolt head, 32 - Nut, 321 - Side surface of the nut,

[0054] 322 - Locking surface of the nut, 323 - Threaded hole, 4 - Proxy icon, 5 - Mouse. Detailed implementation manners

[0055] Embodiment 1 of the present invention is as Figure 9 , Figure 10 shown.

[0056] In the working interface of the 3D design program, a special fastener library for right-angle connection of plate members has been provided in advance. This special fastener library contains multiple bolt-nut assemblies 3 dedicated to right-angle connection of plate members, such as Figure 8 shown. This assembly includes a bolt 31 and a general nut 32 or a special nut with a matching specification. If it is a general nut, it can be a hexagonal nut or a square nut. The bolt and nut in the assembly have been pre-completed in a coaxial assembled state with each other.

[0057] The operation steps to complete the automatic generation of the right-angle connection structure of plate members in this Embodiment 1 are as follows:

[0058] Step 1, the user enters the drawing area of the sheet metal assembly working interface.

[0059] Step 2, first, one edge section of the already made first plate member 1 is overlapped and mated with the plate surface of the second plate member 2 in a right-angle intersection manner.

[0060] Step 3, in order to generate a specific connection structure between these two target plate members, open the special fastener library and select a bolt-nut assembly 3 with a specification meeting the requirements, similar to Figure 8 shown.

[0061] Step 4, referring to Figure 9 、 Figure 1 and Figure 2 , in the drawing area, when the bolt-nut assembly 3 is moved to the joint area between the first plate member 1 and the second plate member 2, the system automatically completes the following mating of the bolt-nut assembly 3 with the first plate member 1 and the second plate member 2, and automatically generates a specific structure that meets the following description on the first plate member 1 and the second plate member 2:

[0062] 1. Automatically coincide the bolt axis of the bolt-nut assembly 3 currently picked up by the user by continuously pressing the left mouse button with the mid-plane of the thickness of the first plate member 1, and be automatically perpendicular to the plate surface of the second plate member 2;

[0063] 2. Automatically coincide the bolt cap locking surface 3121 with the plate surface of the second plate member 2;

[0064] 3. Automatically make a pair of side surfaces 321 of the nut 32 perpendicular to the plate surface of the first plate member 1;

[0065] 4. Automatically generate a notch 11 at the edge of the first plate member 1; the notch 11 at the edge of the plate includes a neck section 111 and a web section 112. The center line of the neck section 111 automatically coincides with the center line of the bolt 31 of the bolt-nut assembly 3, and the width dimension of the neck section 111 automatically matches the diameter dimension of the bolt 31 of the bolt-nut assembly 3; the center line of the web section 112 automatically coincides with the center line of the bolt 31 of the bolt-nut assembly 3, and the preset contour dimension of the web section 112 automatically matches the outer contour dimension of the nut 32 of the bolt-nut assembly 3.

[0066] 5. Automatically generate a bolt mounting hole 22 in the second plate member 2, and the axis of the bolt mounting hole 22 automatically coincides with the axis of the bolt-nut assembly 3; when the position of the bolt-nut assembly 3 is adjusted by moving along the joint line direction of the first plate member 1 and the second plate member 2, the positions of the notch 11 at the edge of the plate and the bolt mounting hole 22 automatically follow the movement.

[0067] The code implementation method of the above automatic auxiliary functions of the system can obviously follow the implementation method of similar functions in the current mainstream 3D design programs, such as the intelligent fastener function in Solidworks.

[0068] In order to automatically generate a neck section with sufficient height for the notch at the edge of the plate, an automatic matching function should be provided in the system for the spacing distance between the nut locking surface of the bolt-nut assembly 3 and the nut locking surface of the bolt according to the calculation results pre-set by the system according to the material size and strength. These automatically matched parameters may need to comply with relevant industry standards. For example, according to the material and thickness of the current target plate member, automatically match the required neck section height dimension to meet the mechanical requirements of the fastening ability of the components. And, the length of the bolt of the selected bolt-nut assembly that conforms to the standard specification sequence should also be automatically modified according to the plate thickness of the target object. In addition, the thread diameter of the selected bolt and nut can also be automatically matched by the system according to the target plate thickness. In principle, the bolt diameter can be slightly larger than the thickness of the first plate member. In the selected bolt-nut assembly, an option of whether to attach a gasket should be provided. When a gasket is attached, the thickness of the gasket should be considered and deducted in the dimension setting of the above automatic matching function. If the selected bolt is a countersunk head bolt, then the bolt mounting hole of the second plate member should also be automatically generated by the system with a tapered countersunk head hole or a cylindrical countersunk head hole with corresponding parameters.

[0069] After having the basic functions described in Embodiment 1, in order to provide reliable positioning for the bolt-nut assembly 3, Embodiment 2 of the present invention further provides a function of automatically generating positioning convex edges 12 and positioning holes 21 for the two plate members that can be used independently.

[0070] The implementation method of this function is shown in Figure 11 、 Figure 12, first start the positioning convex edge drawing tool, and then move the mouse 5 to the joint of the first plate 1 and the second plate 2 in the drawing area. At this time, the system automatically generates a positioning convex edge 12 at the edge of the first plate 1; at the same time, a positioning hole 21 with a position and shape matching the above-mentioned positioning convex edge 12 is automatically generated on the second plate 2.

[0071] In the positioning convex edge editing bar, the system provides a necessary parameter modification interface for the positioning convex edge, including modifying the length, width of the positioning convex edge, and parameters such as the bevel angle 121 of the positioning convex edge by inputting values. In the system default parameters, a set of recommended parameters will be automatically matched according to the thickness and width dimensions of the current target plate. If the recommended parameters can meet the user's design requirements, there is no need to start the parameter editing bar. When the length of the automatically generated positioning convex edge 12 is modified, the corresponding positioning hole 21 on the second plate should also automatically change and maintain the corresponding tolerance parameters.

[0072] When only right-angle connection is made between two plates, Embodiment 1 and Embodiment 2 of the present invention should be used at different positions on the joint surface of these two plates to achieve the firm connection of the two plates. Otherwise, it will be difficult to complete the firm locking of the two plates by only using Embodiment 1 or only using Embodiment 2. However, if these two plates have been positioned in other dimensions using other components and other structures, then only using Embodiment 1 or only using Embodiment 2 can also complete the overall connection and firm locking of each plate.

[0073] Since in the assembly mode, most of the structure of the positioning convex edge 12 of the first plate 1 is hidden in the positioning hole 21 of the positioning plate 2, in some perspectives, it is not easy for the user to identify the positions of the positioning convex edge 12 and the corresponding positioning hole 21, nor is it convenient to select and adjust these structures. For this reason, in this embodiment, the system provides the proxy icon 4 function.

[0074] In the steps described in this embodiment, when the positioning convex edge 12 is automatically generated at the edge of the first plate 1, a long bar-shaped proxy icon 4 of the positioning convex edge 12 is automatically displayed directly above the positioning convex edge 12. After clicking the middle part of the proxy icon 4, it can be moved along the joint line direction of the first plate 1 and the second plate 2. At this time, the position of the positioning convex edge 12 represented by the proxy icon 4 also moves synchronously. Under the system constraints, the proxy icon 4 can only move along the joint line direction of the first plate 1 and the second plate 2. However, if the proxy icon 4 is forcibly moved to the joint line area between other plates, the proxy icon 4 will also automatically move to a new position suitable for setting the positioning convex edge 12, and a new positioning hole 21 will be formed on the corresponding plate at the new position.

[0075] To facilitate the dimension editing of the convex edge, adjustment arrows are provided at both ends of the long strip-shaped proxy icon 4. Clicking and moving the adjustment arrow will extend or shorten the length of this end of the proxy icon 4, and simultaneously change the length of the corresponding positioning convex edge 12.

[0076] To facilitate the user's free observation, the system provides a function button for displaying or hiding all the proxy icons 4 in the working area.

[0077] Embodiment 3 of the present invention is as Figure 13 、 Figure 14 shown.

[0078] In the special fastener library for the right-angle connection of plate parts in the 3D design program, it includes a bolt-nut combination 3 dedicated to the right-angle connection structure of the plate parts described in this embodiment. Similar to Embodiment 1, this combination also includes a bolt 31 and a general nut 32 or a special nut with a matching specification.

[0079] The operating steps for automatically generating the right-angle connection structure of plate parts in this embodiment are as follows:

[0080] Step 1, the user enters the drawing area of the sheet metal assembly work interface.

[0081] Step 2, first, make one edge section of the already manufactured first plate 1-2 coincide and mate with the plate surface of the second plate 2-2 in a right-angle intersection manner.

[0082] Step 3, select one of the above bolt-nut combinations 3.

[0083] Step 4, referring to Figure 13 、 Figure 5 and Figure 6 , in the drawing area, when the bolt-nut combination 3 is moved to the joint area of the first plate 1-2 and the second plate 2-2, the system automatically completes the following mating of the bolt-nut combination 3 with the first plate 1-2 and the second plate 2-2, and automatically generates a specific structure that conforms to the following description on the first plate 1-2 and the second plate 2-2:

[0084] 1. Automatically coincide the bolt axis of the bolt-nut combination 3 currently picked up by the user by continuously pressing the left mouse button with the mid-plane of the thickness of the first plate 1-2, and be automatically perpendicular to the plate surface of the second plate 2-2;

[0085] 2. Automatically coincide the bolt cap locking surface 3121 with the plate surface of the second plate 2-2;

[0086] 3. Automatically make a pair of side surfaces 321 of the nut 32 perpendicular to the plate surface of the first plate 1-2;

[0087] 4. Automatically generate a notch 11-2 at the edge of the first plate member 1-2; the notch 11-2 at the edge of the plate includes a neck section 111-2 and a web section 112-2. The center line of the neck section 111-2 automatically coincides with the center line of the bolt 31 of the bolt-nut assembly 3, and the width dimension of the neck section 111-2 automatically matches the diameter dimension of the bolt 31 of the bolt-nut assembly 3; the center line of the web section 112 automatically coincides with the center line of the bolt 31 of the bolt-nut assembly 3, and the preset contour dimension of the web section 112 automatically matches the outer contour dimension of the nut 32 of the bolt-nut assembly 3;

[0088] 5. Automatically generate a bolt mounting hole 22-2 in the second plate member 2-2. The axis of the bolt mounting hole 22-2 automatically coincides with the axis of the bolt-nut assembly 3; when the position of the bolt-nut assembly 3 is adjusted by moving along the joint line direction of the first plate member 1-2 and the second plate member 2-2, the positions of the notch 11-2 at the edge of the plate and the bolt mounting hole 22-2 automatically move accordingly;

[0089] 6. When a notch 11-2 at the edge of the first plate member 1-2 where the mouse 5 is located is generated, two positioning convex edges 12-2 are automatically generated on both sides of the notch 11-2 at the edge of the plate. At the corresponding positions on the second plate member 2-2, two positioning holes 21-2 and a bolt mounting hole 22-2 whose axis coincides with the axis of the bolt-nut assembly 3 are automatically generated simultaneously. The shapes and positions of the two positioning holes 21-2 match those of the two positioning convex edges 12-2. The two positioning holes 21-2 and the bolt mounting hole 22-2 are merged and connected to each other, and a special-shaped long hole is generated according to the preset contour line.

[0090] Different from Embodiment 1, in this embodiment, a composite connection structure is automatically formed on the two plate members at the position where the bolt-nut assembly 3 is located. These structures are interrelated and can move synchronously with the bolt-nut assembly 3. When the thickness of the second plate member 2-2 permits, the height of the neck section 111-2 of the notch on the first plate member 1-2 in this embodiment can be set to be the same as the thickness of the second plate member 2-2. In this way, the neck section 111-2 of the notch on the first plate member 1-2 will be hidden in the positioning hole 21-2 of the second plate member 2-2. At this time, the spacing distance between the locking surface 3121 of the bolt head of the bolt-nut assembly 3 and the locking surface 322 of the nut will be automatically adjusted to be the same as the thickness of the second plate member 2-2.

[0091] Similar to Embodiment 1, when the positioning convex edge 12-2 is automatically generated at the edge of the first plate member 1-2, a long bar-shaped proxy icon 4 of the positioning convex edge 12-2 is also automatically displayed directly above the positioning convex edge 12-2. The proxy icon 4 can be clicked by the mouse 5 and moved along the joint line direction of the first plate member 1-2 and the second plate member 2-2. And when the proxy icon 4 is moved, the positioning convex edge 12-2 it represents moves accordingly. Similarly, when the arrow at one end of the long bar-shaped proxy icon 4 is clicked by the mouse 5 and moved along the joint line direction of the first plate member 1 and the second plate member 2, the length of the long bar-shaped proxy icon 4 also changes synchronously. Moreover, the total length of the two positioning convex edges 12-2 it represents also changes proportionally.

[0092] In the editing interface of the plate member positioning convex edge, the system also provides a numerical adjustment box for changing the height of the positioning convex edge, and default increment and decrement values are provided according to the welding process.

[0093] When standardized products of the special nuts for this plate member right-angle connection structure are available, obviously, there will also be options for special nuts for the nuts 32 in the bolt-nut assembly 3.

[0094] Obviously, the present invention can be implemented as a new function of existing 3D design programs or as an optional plug-in program.

Claims

1. Automatic generation method for right-angle connection structure of plate components in 3D design program, comprising the following steps: Step 1, enter the plate component assembly mode, Step 2, in the drawing area, superpose and fit an edge section of the first plate component (1) with the plate surface of the second plate component (2) in a right-angle intersection manner; It is characterized in that: Step 3, select a bolt-nut combination (3) that matches the current thickness of the plate component in the dedicated fastener library, Step 4, in the drawing area, when the bolt-nut combination (3) is moved to the joint of the first plate component (1) and the second plate component (2), the axis of the bolt of the bolt-nut combination (3) automatically coincides with the mid-plane of the thickness of the first plate component (1), and is automatically perpendicular to the plate surface of the second plate component (2), and the bolt head locking surface (3121) automatically coincides with the plate surface of the second plate component (2), and a pair of side surfaces (321) of the nut are automatically perpendicular to the plate surface of the first plate component (1), and a plate edge notch (11) is automatically generated at the plate edge of the first plate component (1); this plate edge notch (11) includes a neck section (111) and a web section (112), the center line of the neck section (111) automatically coincides with the center line of the bolt of the bolt-nut combination (3), and the width dimension of the neck section (111) automatically matches the bolt diameter dimension of the bolt-nut combination (3); the center line of the web section (112) automatically coincides with the center line of the bolt of the bolt-nut combination (3), and the preset contour dimension of the web section (112) automatically matches the outer contour dimension of the nut (32) of the bolt-nut combination (3); and a bolt mounting hole (22) is automatically generated on the second plate component (2), and the axis of this bolt mounting hole (22) automatically coincides with the axis of the bolt-nut combination (3); when the position of the bolt-nut combination (3) is moved and adjusted along the joint line direction of the first plate component (1) and the second plate component (2), the positions of the plate edge notch (11) and the bolt mounting hole (22) automatically move accordingly.

2. The automatic generation method for right-angle connection structure of plate components in 3D design program according to claim 1, characterized in that: It may further include step 5 that can be used independently: start the positioning convex edge drawing tool, and then move the mouse to the joint of the first plate component (1) and the second plate component (2) in the drawing area, and a positioning convex edge (12) is automatically generated at the edge of the first plate component (1); meanwhile, a positioning hole (21) with a position and shape matching the above positioning convex edge (12) is automatically generated on the second plate component (2); the dimension parameters of the positioning convex edge (12) can be modified.

3. The automatic generation method for right-angle connection structure of plate components in 3D design program according to claim 2, characterized in that: In the said step 5, when the positioning convex edge (12) is automatically generated at the edge of the first plate component (1), a proxy icon (4) of this positioning convex edge (12) is automatically displayed beside the positioning convex edge (12), and this proxy icon (4) can be clicked by the mouse and moved along the joint line direction of the first plate component (1) and the second plate component (2); and when this proxy icon (4) is moved, the position of the positioning convex edge (12) it represents moves synchronously.

4. The automatic generation method of the right-angle connection structure of the plate parts in the 3D design program according to claim 3, characterized in that: The proxy icon is a long strip-shaped proxy icon (4) parallel to the positioning convex edge (12). When the two ends of the long strip-shaped proxy icon (4) are clicked by the mouse and moved along the joint line direction of the first plate part (1-2) and the second plate part (2-2), the length of the long strip-shaped proxy icon (4) will change accordingly, and the length of the positioning convex edge (12) it represents will also change proportionally.

5. The automatic generation method of the right-angle connection structure of the plate parts in the 3D design program according to claim 1, characterized in that: In step 4, when a plate edge notch (11-2) is generated at the plate edge position of the first plate part (1-2) where the mouse is located, two positioning convex edges (12-2) are automatically generated on both sides of the plate edge notch (11-2). At the corresponding position on the second plate part (2-2), two positioning holes (21-2) whose positions and shapes match the above two positioning convex edges (12-2) and a bolt mounting hole (22-2) whose axis coincides with the axis of the bolt-nut assembly 3 are automatically generated at the same time. These two positioning holes (21-2) and the bolt mounting hole (22-2) are merged and communicated with each other, and a special-shaped long hole is generated according to the preset contour line.

6. The automatic generation method of the right-angle connection structure of the plate parts in the 3D design program according to claim 5, characterized in that: In step 4, when a positioning convex edge (12-2) is automatically generated at the edge of the first plate part (1-2), a proxy icon (4) of the positioning convex edge (12-2) is automatically displayed beside the positioning convex edge (12-2). The proxy icon (4) can be clicked by the mouse and moved along the joint line direction of the first plate part (1-2) and the second plate part (2-2); and when the proxy icon (4) is moved, the positioning convex edge (12-2) it represents moves accordingly.

7. The automatic generation method of the right-angle connection structure of the plate parts in the 3D design program according to claim 6, characterized in that: Mouse When one end of the long strip-shaped proxy icon (4) is clicked and moved along the joint line direction of the first plate part (1) and the second plate part (2), the length of the long strip-shaped proxy icon (4) will change accordingly, and the total length of the two positioning convex edges (12-2) it represents will also change proportionally.

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