CN117408069A - Automatic sheet metal part parting line generation method, storage medium and electronic equipment - Google Patents
Automatic sheet metal part parting line generation method, storage medium and electronic equipment Download PDFInfo
- Publication number
- CN117408069A CN117408069A CN202311460863.2A CN202311460863A CN117408069A CN 117408069 A CN117408069 A CN 117408069A CN 202311460863 A CN202311460863 A CN 202311460863A CN 117408069 A CN117408069 A CN 117408069A
- Authority
- CN
- China
- Prior art keywords
- points
- sheet metal
- metal part
- representative point
- offset
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002184 metal Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000003860 storage Methods 0.000 title claims abstract description 13
- 238000003825 pressing Methods 0.000 claims abstract description 22
- 230000006870 function Effects 0.000 claims description 25
- 239000013598 vector Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/13—Edge detection
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/60—Analysis of geometric attributes
- G06T7/64—Analysis of geometric attributes of convexity or concavity
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/60—Analysis of geometric attributes
- G06T7/68—Analysis of geometric attributes of symmetry
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30108—Industrial image inspection
- G06T2207/30136—Metal
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30108—Industrial image inspection
- G06T2207/30164—Workpiece; Machine component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Geometry (AREA)
- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Image Analysis (AREA)
Abstract
The application discloses an automatic generation method of a sheet metal part parting line, a storage medium and electronic equipment, wherein the method comprises the steps of obtaining a contour representative point on the sheet metal part; determining a target bias point according to the contour representative point; determining a connecting line between any two adjacent target bias points according to the morphology judging function; all connecting lines are projected onto the pressing surface to form a parting line, so that automatic generation of the parting line is realized. The stamping efficiency of the sheet metal part is improved, the labor cost of sheet metal part manufacture is reduced, and the accuracy of the parting line is improved.
Description
Technical Field
The application relates to the technical field of stamping dies, in particular to an automatic generation method of a sheet metal part parting line, a storage medium and electronic equipment.
Background
Automobile sheet metal parts are usually produced by stamping. When the stamping process is designed, the arrangement of the parting line has great influence on the part, and the formability, the size state, the surface state and the like of the part can be possibly influenced. In the prior art, a process technician creates and adjusts the split line morphology according to the part and process experience. The manual operation is time-consuming, inefficient and dependent on the level of experience of the person.
Disclosure of Invention
The utility model aims to solve the problems of low shape efficiency and accuracy of manually adjusting the parting line of the sheet metal part by a process technician in the prior art, and provides an automatic generating method of the parting line of the sheet metal part, a storage medium and electronic equipment.
The technical scheme of the application provides an automatic sheet metal part parting line generation method, which comprises the following steps:
acquiring a contour representative point on the sheet metal part;
determining a target bias point according to the profile representative point;
determining a connecting line between any two adjacent target bias points according to the morphology judging function;
and projecting all the connecting lines onto a pressing surface to form a parting line.
Further, the obtaining the profile representative point on the sheet metal part includes:
acquiring contour boundary points of the sheet metal part;
identifying all salient points in the contour boundary points, and removing approximately collinear points in the salient points to obtain a first contour representative point;
and adjusting the first contour representative point according to the symmetry of the part of the sheet metal part to obtain the contour representative point.
Further, the method further comprises the following steps:
determining the offset direction and the offset distance of each profile representative point;
determining a bias point corresponding to each contour representative point according to the bias direction and the bias distance;
connecting each profile representative point with the corresponding offset point to generate a corresponding offset judgment line segment;
identifying the intersected offset judgment line segment as an invalid judgment line segment;
and deleting the bias points corresponding to the invalid judgment line segments to generate target bias points.
Further, the determining the offset direction and the offset distance of each contour representative point includes:
connecting and identifying line segments between any two adjacent contour representative points;
an angle formed by two identification line segments connected with each profile representative point is used as an identification angle corresponding to the profile representative point, and the angular bisector direction of the identification angle is determined to be the offset direction of the profile representative point;
and determining the offset distance of the profile representative point according to the material property of the sheet metal part, the height of the profile representative point from the pressing surface and the normal vector of the surface where the profile representative point is located.
Further, the determining the offset distance of the profile representative point according to the material property of the sheet metal part, the height of the profile representative point from the pressing surface and the normal vector of the surface where the profile representative point is located includes:
acquiring coordinates of the contour representative points, normal vectors of the surfaces of the contour representative points and the height of the contour representative points from a pressing surface;
determining the offset distance of the representative points of the profile
L＝(K1+(n·m))*H；
Wherein L is the offset distance; k1 is a material property coefficient;
n is a normal vector of the plane where the contour representative point is located;
m is the stamping direction of the sheet metal part;
and H is the height of the profile representative point from the pressing surface.
Further, the method further comprises the following steps:
substituting coordinate values of two adjacent target bias points into at least two morphology judging functions for fitting to obtain fitting similarity respectively;
selecting a connection mode corresponding to the morphology judgment function with highest fitting similarity as a target connection mode between the two target bias points;
and connecting two adjacent target bias points according to the target connection mode to generate the connecting line.
Further, when the target connection mode is a straight line connection, the connecting two adjacent target bias points according to the target connection mode to generate the connecting line includes:
and generating a linear line segment between the two adjacent target offset points as the connecting line.
Further, when the target connection mode is curve connection, the connecting two adjacent target bias points according to the target connection mode to generate the connecting line includes:
determining the tangential direction of a connecting line between the two adjacent target offset points according to the shape of the sheet metal part;
and generating a curve line segment between the two adjacent target offset points according to the target connection mode and the tangential direction to serve as the connecting line.
The technical scheme of the application also provides a storage medium which stores computer instructions and is used for executing the sheet metal part parting line automatic generation method when the computer executes the computer instructions.
The technical scheme of the application also provides electronic equipment, which comprises at least one processor; the method comprises the steps of,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the sheet metal part parting line automatic generation method as previously described.
After the technical scheme is adopted, the method has the following beneficial effects:
according to the technical scheme, the target bias points are determined according to the contour representative points on the sheet metal part, the connecting lines between any two adjacent target bias points are determined according to the shape judging function, then the connecting lines are projected onto the pressing surface to form the parting line, the contour boundary points on the sheet metal part are input to obtain the accurate parting line, automatic generation of the parting line is achieved, efficiency can be effectively improved, labor cost of sheet metal part manufacturing is reduced, and accuracy of the parting line is improved.
Drawings
The disclosure of the present application will become more readily understood with reference to the accompanying drawings. It should be understood that: the drawings are for illustrative purposes only and are not intended to limit the scope of the present application. In the figure:
FIG. 1 is a flow chart of a method for automatically generating parting lines of sheet metal parts in an embodiment of the present application;
FIG. 2 is a flow chart of a method for automatically generating parting lines of sheet metal parts in a preferred embodiment of the present application;
FIG. 3 is an exemplary diagram of representative points of a contour in an embodiment of the present application;
FIG. 4 is an exemplary diagram of determining bias direction for representative points of a profile in an embodiment of the present application;
FIG. 5 is a diagram illustrating a target connection mode according to an embodiment of the present application;
fig. 6 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application.
Detailed Description
Specific embodiments of the present application are further described below with reference to the accompanying drawings.
It is easy to understand that, according to the technical solution of the present application, those skilled in the art may replace various structural manners and implementation manners without changing the true spirit of the present application. Accordingly, the following detailed description and drawings are merely illustrative of the present application and are not intended to be exhaustive or to be limiting of the application.
Terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible to be mentioned in the present specification are defined with respect to the configurations shown in the drawings, which are relative concepts, and thus may be changed according to different positions and different use states thereof. These and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two components. The above-described specific meanings belonging to the present application are understood as appropriate by those of ordinary skill in the art.
The sheet metal part parting line generating method in the embodiment of the application, as shown in fig. 1, comprises the following steps:
step S101: acquiring a contour representative point on the sheet metal part;
step S102: determining a target bias point according to the contour representative point;
step S103: determining a connecting line between any two adjacent target bias points according to the morphology judging function;
step S104: and projecting all the connecting lines onto a pressing surface to form a parting line.
Specifically, the contour representative point of the sheet metal part is obtained in step S101, which may be directly obtained by identifying the boundary of the sheet metal part, or may be obtained by identifying the contour boundary point.
In step S102, a target bias point is determined according to the contour representative point, a corresponding bias point is generated according to the bias direction and the bias distance of the contour representative point, and whether the target bias point is determined according to the positional relationship between the contour representative point and the corresponding bias point.
In step S103, a connection line between any two adjacent target bias points is determined according to the morphology determination function, which may be determined according to the morphology determination function, or may be obtained by directly comparing model line segments.
In step S104, all the connecting lines are projected onto the pressing surface to form a parting line.
According to the method and the device, the target bias points are determined according to the contour representative points on the sheet metal part, the connecting lines between any two adjacent target bias points are determined according to the shape judging function, then the connecting lines are projected onto the pressing surface to form the parting line, the accurate parting line can be obtained by inputting the contour boundary points on the sheet metal part, automatic generation of the parting line is achieved, efficiency can be effectively improved, labor cost of sheet metal part manufacturing is reduced, and accuracy of the parting line is improved.
In one embodiment, the obtaining the profile representative point on the sheet metal part includes:
acquiring contour boundary points of the sheet metal part;
identifying all salient points in the contour boundary points, and removing approximately collinear points in the salient points to obtain a first contour representative point;
and adjusting the first contour representative point according to the symmetry of the part of the sheet metal part to obtain the contour representative point.
In the embodiment of the application, the salient points in the contour boundary points are identified from the contour boundary points, and the approximately collinear points in the salient points are removed to obtain the first contour boundary points, so that the contour of the sheet metal part can be reflected by the first contour boundary points, and the number of the salient points is reduced to reduce the data processing capacity.
Wherein, approximate collineation point specifically is: and (3) making a straight line between every two adjacent salient points, judging whether other adjacent salient points are on the same straight line, and if so, judging that the adjacent salient points are approximately collinear points.
According to the method and the device, the profile representative points are obtained by combining the symmetry of the profile boundary points and the sheet metal parts, and the accurate and comprehensive profile representative points can be obtained according to the characteristics of different sheet metal parts.
In one embodiment, the determining the target bias point according to the contour representative point includes:
determining the offset direction and the offset distance of each profile representative point;
determining a bias point corresponding to each contour representative point according to the bias direction and the bias distance;
connecting each profile representative point with the corresponding offset point to generate a corresponding offset judgment line segment;
identifying the intersected offset judgment line segment as an invalid judgment line segment;
and deleting the bias points corresponding to the invalid judgment line segments to generate target bias points.
In fig. 3, after determining the offset direction and the offset distance of the profile representative point D, the offset distance extends in the offset direction of the profile representative point D, and then the offset point corresponding to the profile representative point D is obtained.
And then, by using a mode of connecting the offset judgment line segments, identifying the intersected offset judgment line segments as invalid judgment line segments and deleting the corresponding offset points, thereby avoiding the phenomenon of self-intersection of the parting lines when the parting lines are generated by connecting the parting points in sequence.
In one embodiment, determining the offset direction and offset distance of each contour representative point further comprises:
connecting and identifying line segments between any two adjacent contour representative points;
an angle formed by two identification line segments connected with each profile representative point is used as an identification angle corresponding to the profile representative point, and the angular bisector direction of the identification angle is determined to be the offset direction of the profile representative point;
and determining the offset distance of the profile representative point according to the material property of the sheet metal part, the height of the profile representative point from the pressing surface and the normal vector of the surface where the profile representative point is located.
In fig. 4, two recognition line segments, in which the profile representative point B is connected to the profile representative point a and the profile representative point C, respectively, form a recognition angle α corresponding to the profile representative point B, and the direction of the angular bisector P of the recognition angle α is the offset direction of the profile representative point B.
In one embodiment, determining the offset distance of the profile representative point according to the material property of the sheet metal part, the height of the profile representative point from the pressing surface and the normal vector of the surface where the profile representative point is located, and further includes:
acquiring coordinates of the contour representative points, normal vectors of the surfaces of the contour representative points and the height of the contour representative points from a pressing surface;
determining the offset distance of the representative points of the profile
L＝(K1+(n·m))*H；
Wherein L is the offset distance; k1 is a material property coefficient;
n is a normal vector of the plane where the contour representative point is located;
m is the stamping direction of the sheet metal part;
n.m is the product of n and m points, the result being a scalar;
and H is the height of the profile representative point from the pressing surface.
In fig. 3, taking the profile representative point D as an example, the normal vector n of the surface where the profile representative point D is located, the height H of the profile representative point D from the pressing surface, and the stamping directions m and K1 of the sheet metal part are preset material attribute coefficients, and specifically, the preset material attribute coefficients are preset according to the attributes of different materials.
In one embodiment, the determining, according to the morphology determination function, a connection line between any two adjacent target bias points includes:
substituting coordinate values of two adjacent target bias points into at least two morphology judging functions for fitting to obtain fitting similarity respectively;
selecting a connection mode corresponding to the morphology judgment function with highest fitting similarity as a target connection mode between the two target bias points;
and connecting two adjacent target bias points according to the target connection mode to generate the connecting line.
Wherein the morphology decision function includes at least a linear function and a curve function, as an example, the linear fitting function may be set to y=kx+b (x, y is the target bias point coordinate); the curve fitting function can be set to x 2 +Ky 2 S (x, y are target bias point coordinates).
According to the embodiment of the application, the shape judgment functions of the connecting lines with different shapes are set, the two adjacent target bias points are substituted to obtain the fitting similarity, and the shape judgment function with the highest fitting similarity is determined to be the target connection mode between the two target bias points, so that the optimal connection mode between the two adjacent target bias points is obtained.
In one embodiment, when the target connection mode is a straight line, the connecting two adjacent target bias points according to the target connection mode to generate the connecting line includes:
and directly generating a linear line segment between the two adjacent target offset points as a connecting line.
In one embodiment, when the target connection mode is a curve, the connecting two adjacent target bias points according to the target connection mode to generate the connecting line includes:
determining the tangential direction of a connecting line between the two adjacent target offset points according to the shape of the sheet metal part;
and generating a curve line segment between two adjacent target offset points according to the target connection mode and the tangential direction to serve as a connecting line.
As shown in fig. 5, for example, when the tangential direction of the connecting line between the target offset point E and the target offset point F is determined to be a according to the sheet metal part shape, a curve line segment illustrating the target offset point E and the target offset point F is generated as the connecting line.
The above technical schemes can be combined according to the need to achieve the best technical effect.
Fig. 2 shows a flowchart of a method for automatically generating a parting line of a sheet metal part in a preferred embodiment of the present application, which specifically includes:
step S201: acquiring contour boundary points of the sheet metal part, identifying all salient points in the contour boundary points, and removing the salient points which are approximately collinear to obtain a first contour representative point;
step S202: adjusting the first contour representative point according to the symmetry of the part of the sheet metal part to obtain a contour representative point;
step S203: connecting identification line segments between any two adjacent contour representative points, wherein two identification line segments connected with each contour representative point form corresponding identification angles, and an angular bisector of each identification angle is the offset direction of the contour representative point;
step S204: acquiring coordinates of the profile representative points, normal vector n of the surface of the profile representative points, and height H of the profile representative points from a pressing surface, and determining the offset distance L of the profile representative points by L= (K1+ (n.m)). H in combination with the material property K1 and the stamping direction m of the sheet metal part;
step S205: obtaining bias points corresponding to the profile representative points by combining the bias directions and the bias distances, and connecting each profile representative point with the corresponding bias point to generate a corresponding bias judgment line segment;
step S206: identifying an intersecting bias judgment line segment as an invalid judgment line segment, deleting a bias point corresponding to the invalid judgment line segment, and generating a target bias point;
step S207: substituting coordinate values of two adjacent target bias points into at least two morphology judging functions for fitting to obtain fitting similarity respectively;
step S208: selecting a connection mode corresponding to the morphology judgment function with highest fitting similarity as a target connection mode between the two target bias points;
step S209A: if the target connection mode is linear connection, generating a linear line segment between the two adjacent target offset points as the connecting line;
step S209B: if the target connection mode is curve connection, determining the tangential direction of a connecting line between two adjacent target offset points according to the shape of the sheet metal part, and determining a corresponding curve line segment according to the target connection mode and the tangential direction to serve as the connecting line between the two adjacent target offset points;
step S210: all connecting lines are projected onto a pressing surface to form a parting line.
The technical scheme of the application also provides a storage medium which stores computer instructions and is used for executing the sheet metal part parting line automatic generation method in any embodiment when the computer instructions are executed by a computer.
Fig. 6 shows an electronic device of the present application, comprising:
at least one processor 601; the method comprises the steps of,
a memory 602 communicatively coupled to the at least one processor 601; wherein,
the memory 602 stores instructions executable by the at least one processor 601 to enable the at least one processor 601 to perform all the steps of the sheet metal part parting line automatic generation method of any of the method embodiments described above.
In fig. 6, a processor 601 is taken as an example:
the electronic device may further include: an input device 603 and an output device 604.
The processor 601, memory 602, input device 603, and output device 604 may be connected by a bus or other means, the connection being illustrated by a bus.
The memory 602 is used as a non-volatile computer readable storage medium, and may be used to store a non-volatile software program, a non-volatile computer executable program, and a module, such as program instructions/modules corresponding to the sheet metal part parting line automatic generating method in the embodiment of the present application, for example, a method flow shown in fig. 1 or 2. The processor 601 executes various functional applications and data processing by running nonvolatile software programs, instructions and modules stored in the memory 602, i.e., implements the sheet metal part parting line automatic generation method in the above-described embodiment.
The memory 602 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created from the use of the sheet metal part parting line automatic generation method, or the like. In addition, the memory 602 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some embodiments, memory 602 optionally includes memory remotely located relative to processor 601, which may be connected via a network to a device that performs the sheet metal part parting line auto-generation method. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 603 may receive input user clicks and generate signal inputs related to user settings and function control of the sheet metal part parting line automatic generation method. The output 604 may include a display device such as a display screen.
The sheet metal part parting line automatic generation method in any of the method embodiments described above is performed when the one or more modules are stored in the memory 602 and executed by the one or more processors 601.
What has been described above is merely illustrative of the principles and preferred embodiments of the present application. It should be noted that, for a person skilled in the art, embodiments which are obtained by appropriately combining the technical solutions respectively disclosed in the different embodiments are also included in the technical scope of the present invention, and that several other modifications are possible on the basis of the principles of the present application and should also be regarded as the protection scope of the present application.
Claims (10)
1. An automatic sheet metal part parting line generation method is characterized by comprising the following steps:
acquiring a contour representative point on the sheet metal part;
determining a target bias point according to the profile representative point;
determining a connecting line between any two adjacent target bias points according to the morphology judging function;
and projecting all the connecting lines onto a pressing surface to form a parting line.
2. The method for automatically generating a parting line of a sheet metal part according to claim 1, wherein the step of obtaining the representative points of the profile on the sheet metal part comprises the steps of:
acquiring contour boundary points of the sheet metal part;
identifying all salient points in the contour boundary points, and removing approximately collinear points in the salient points to obtain a first contour representative point;
and adjusting the first contour representative point according to the symmetry of the part of the sheet metal part to obtain the contour representative point.
3. The method for automatically generating a parting line of a sheet metal part according to claim 1, wherein the determining a target bias point according to the profile representative point comprises:
determining the offset direction and the offset distance of each profile representative point;
determining a bias point corresponding to each contour representative point according to the bias direction and the bias distance;
connecting each profile representative point with the corresponding offset point to generate a corresponding offset judgment line segment;
identifying the intersected offset judgment line segment as an invalid judgment line segment;
and deleting the bias points corresponding to the invalid judgment line segments to generate target bias points.
4. The method for automatically generating the parting line of the sheet metal part according to claim 3, wherein the determining the offset direction and the offset distance of each profile representative point comprises:
connecting and identifying line segments between any two adjacent contour representative points;
an angle formed by two identification line segments connected with each profile representative point is used as an identification angle corresponding to the profile representative point, and the angular bisector direction of the identification angle is determined to be the offset direction of the profile representative point;
and determining the offset distance of the profile representative point according to the material property of the sheet metal part, the height of the profile representative point from the pressing surface and the normal vector of the surface where the profile representative point is located.
5. The method for automatically generating a parting line of a sheet metal part according to claim 4, wherein determining the offset distance of the profile representative point according to the material property of the sheet metal part, the height of the profile representative point from the pressing surface, and the normal vector of the surface of the profile representative point comprises:
acquiring coordinates of the contour representative points, normal vectors of the surfaces of the contour representative points and the height of the contour representative points from a pressing surface;
determining the offset distance of the representative points of the profile
L＝(K1+(n·m))*H；
Wherein L is the offset distance; k1 is a material property coefficient;
n is a normal vector of the plane where the contour representative point is located;
m is the stamping direction of the sheet metal part;
and H is the height of the profile representative point from the pressing surface.
6. The method for automatically generating the parting line of the sheet metal part according to claim 1, wherein determining the connecting line between any two adjacent target offset points according to the shape determining function comprises:
substituting coordinate values of two adjacent target bias points into at least two morphology judging functions for fitting to obtain fitting similarity respectively;
selecting a connection mode corresponding to the morphology judgment function with highest fitting similarity as a target connection mode between the two target bias points;
and connecting two adjacent target bias points according to the target connection mode to generate the connecting line.
7. The method for automatically generating a parting line of a sheet metal part according to claim 6, wherein when the target connection mode is a straight line connection, the connecting two adjacent target offset points are connected according to the target connection mode to generate the connecting line, comprising:
and generating a linear line segment between the two adjacent target offset points as the connecting line.
8. The method for automatically generating a parting line of a sheet metal part according to claim 6, wherein when the target connection mode is curve connection, the connecting two adjacent target offset points are connected according to the target connection mode to generate the connecting line, comprising:
determining the tangential direction of a connecting line between the two adjacent target offset points according to the shape of the sheet metal part;
and generating a curve line segment between the two adjacent target offset points according to the target connection mode and the tangential direction to serve as the connecting line.
9. A storage medium storing computer instructions for performing the sheet metal part parting line automatic generation method of any one of claims 1 to 8 when executed by a computer.
10. An electronic device comprising at least one processor; the method comprises the steps of,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the sheet metal part parting line automatic generation method of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311460863.2A CN117408069A (en) | 2023-11-03 | 2023-11-03 | Automatic sheet metal part parting line generation method, storage medium and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311460863.2A CN117408069A (en) | 2023-11-03 | 2023-11-03 | Automatic sheet metal part parting line generation method, storage medium and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117408069A true CN117408069A (en) | 2024-01-16 |
Family
ID=89486933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311460863.2A Pending CN117408069A (en) | 2023-11-03 | 2023-11-03 | Automatic sheet metal part parting line generation method, storage medium and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117408069A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117874966A (en) * | 2024-03-12 | 2024-04-12 | 季华实验室 | Automatic parting line generation method, electronic device and computer readable storage medium |
| CN117910286A (en) * | 2024-03-20 | 2024-04-19 | 季华实验室 | Automatic pressure calculation method, sheet metal part machining method and related equipment |
-
2023
- 2023-11-03 CN CN202311460863.2A patent/CN117408069A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117874966A (en) * | 2024-03-12 | 2024-04-12 | 季华实验室 | Automatic parting line generation method, electronic device and computer readable storage medium |
| CN117910286A (en) * | 2024-03-20 | 2024-04-19 | 季华实验室 | Automatic pressure calculation method, sheet metal part machining method and related equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN117408069A (en) | Automatic sheet metal part parting line generation method, storage medium and electronic equipment | |
| CN111238352B (en) | Wall surface virtual guiding rule detection method, system, equipment and storage medium | |
| CN110814529B (en) | Flexible circuit board laser cutting method | |
| US20180122083A1 (en) | Method and device for straight line detection and image processing | |
| CN109545072A (en) | Pose calculation method, device, storage medium and the system of map structuring | |
| CN108364257B (en) | Splicing method and system for three-dimensional scanning point cloud data | |
| WO2022247137A1 (en) | Robot and charging pile recognition method and apparatus therefor | |
| CN112907601B (en) | Automatic extraction method and device for tunnel arch point cloud based on feature transformation | |
| CN112747734A (en) | Environment map direction adjusting method, system and device | |
| CN109657328A (en) | A kind of TLM micro-structure towards GPU hardware linear light gated Boundary algorithm | |
| US20150051724A1 (en) | Computing device and simulation method for generating a double contour of an object | |
| CN112991489B (en) | Isobaric line drawing method and device, electronic equipment and storage medium | |
| CN114741188A (en) | Graphic element processing method and device, electronic equipment and storage medium | |
| CN111633358B (en) | Laser-based weld parameter measuring method and device | |
| CN112200860B (en) | Object position relation determining method and device, storage medium and electronic device | |
| CN114445847A (en) | Metal plate model bending data feature identification method based on three-dimensional vector data | |
| CN114444185A (en) | In-situ labeling identification method and device and electronic equipment | |
| CN114255326A (en) | Point cloud data processing method and device, electronic equipment and storage medium | |
| CN113140021A (en) | Vector line generating method, system and computer readable storage medium | |
| CN117874966B (en) | Automatic parting line generation method, electronic device and computer readable storage medium | |
| CN114081396B (en) | Map data reporting method and device of sweeper, storage medium and electronic equipment | |
| CN117892440B (en) | Binding direction and binding segment confirmation method, electronic equipment and storage medium | |
| EP4187499A1 (en) | Target detection method and apparatus, electronic device, and computer storage medium | |
| CN118081149A (en) | Teaching-free weld joint positioning method, medium and equipment for spliced workpieces | |
| CN113971327A (en) | Design method and device of automobile stamping die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |