A system for generating the center line of the outer ring main rib of a press

Abstract

The application provides a system for generating the center line of the outer ring main rib of a press, comprising an input module, an operation module, a judgment module and an output module; the input module acquires a peripheral curve; the operation module obtains a peripheral reduced curve according to the peripheral curve; the judgment module judges whether the peripheral reduced curve forms a closed curve; if yes, the output module outputs the peripheral reduced curve; if not, the input module acquires the product surface of the previous process, the installation surface of the guide plate of the press and the installation surface of the side pin; the operation module obtains a boundary reduced curve according to the product surface of the previous process; the operation module generates the reference line of the guide plate and the reference line of the side pin according to the installation surface of the guide plate of the press and the installation surface of the side pin, and cuts the boundary reduced curve according to the peripheral reduced curve, the reference line of the guide plate and the reference line of the side pin to obtain the center line of the outer ring main rib of the press. The application can improve the generation efficiency of the center line of the outer ring main rib of the press and improve the positioning and fixing accuracy of the press.

Description

Technical Field

[0001] This invention belongs to the field of intelligent mold design technology, specifically relating to a system for generating the center line of the outer ring main rib of a pressure feeder. Background Technology

[0002] The pressure plate is a crucial component of a mold; a mold is a tool used to create shaped products, playing an indispensable role in processes such as cold forming of automotive sheet metal parts and stamping of automotive bodies. The forming process of automotive parts typically involves 4 to 5 steps, each using a different mold to shape the blank. The blank passes through each mold sequentially, forming the final product.

[0003] The main function of the pressure vessel in the mold forming process is to position and fix the product during molding, preventing displacement. Current technology typically relies on visual observation of the product from the previous process to draw the outer ring main rib centerline of the pressure vessel for the current process. Visual observation has significant errors, resulting in the pressure vessel not perfectly fitting the previous product. This fails to provide precise positioning and fixation during processing, necessitating multiple modifications to the drawn outer ring main rib centerline. Therefore, the process of generating the outer ring main rib centerline of the pressure vessel is slow, inefficient, and lacks accuracy. Summary of the Invention

[0004] This invention aims to solve the technical problems existing in the prior art and provides a system for generating the center line of the outer ring main rib of a pressure feeder. By inputting the product surface and peripheral curve of the previous process, the center line of the outer ring main rib of the pressure feeder is obtained, thereby improving the generation efficiency of the center line of the outer ring main rib of the pressure feeder and improving the positioning and fixing accuracy of the pressure feeder.

[0005] To achieve the above-mentioned objectives of the present invention, according to a first aspect of the present invention, the present invention provides a system for generating the centerline of the outer ring main rib of a pressure feeder, comprising an input module, an operation module, a judgment module, and an output module; the input module is used to acquire the outer curve and the surface of the previous process product; the operation module is used to project the outer curve onto the XY plane to obtain the outer projection curve; the judgment module is used to determine whether the outer projection curve forms a closed curve; if the outer projection curve forms a closed curve, the output module is activated to output the outer shrink curve; if the outer projection curve cannot form a closed curve, the operation module is activated; the operation module is also used to obtain the boundary expansion curve based on the surface of the previous process product; the operation module is also used to trim the boundary expansion curve based on the outer projection curve to obtain the centerline of the outer ring main rib of the pressure feeder; the output module is used to output the centerline of the outer ring main rib of the pressure feeder.

[0006] Furthermore, the operation module includes a projection submodule, an extension submodule, and a trimming submodule; the projection submodule is used to project the outer curve onto the XY plane to obtain the outer projection curve; the extension submodule is used to extend both ends of the outer projection curve to obtain the outer extension curve; the trimming submodule is used to trim the boundary expansion curve according to the outer extension curve to obtain the center line of the outer ring main rib of the pressure feeder.

[0007] Furthermore, the operation module also includes an identification submodule: the identification submodule is used to obtain the intersection point of the outer extension curve and the boundary expansion curve as the trimming intersection point, and the number of trimming intersection points is 2; the trimming submodule is used to trim the boundary expansion curve according to the outer extension curve and the trimming intersection point to obtain the center line of the outer ring main rib of the pressure plater.

[0008] Furthermore, the specific steps for the identification submodule to obtain the intersection points of the outer extended curve and the boundary expansion curve are as follows: The identification submodule obtains the number of intersection points of the outer extended curve and the boundary expansion curve; if the outer extended curve and the boundary expansion curve have no intersection points, the extension submodule is activated; the extension submodule selects the two endpoints of the outer extended curve and extends the two ends of the outer extended curve along the normal direction of the endpoints, so that the two ends of the outer extended curve intersect the boundary expansion curve to obtain two clipping intersection points; if the outer extended curve and the boundary expansion curve have one intersection point, the intersection point is identified as a clipping intersection point; the extension submodule is activated, and the extension submodule selects the end of the outer extended curve that does not intersect the boundary expansion curve, and extends the outer extended curve along the normal direction of the endpoint until the endpoint intersects the boundary expansion curve to obtain another clipping intersection point; if the outer extended curve and the boundary expansion curve have two intersection points, the two intersection points are identified as two clipping intersection points.

[0009] Furthermore, the operation module also includes a chamfering sub-module, which is used to round the corners between the original extended outer curve and the extended line segment; the corner radius is larger than the machining tool radius.

[0010] Furthermore, the process of the trimming submodule to trim the boundary expansion curve based on the intersection of the outer extension curve and the trimming point to obtain the center line of the outer ring main rib of the pressure device is as follows: trim the line segment on the outer extension curve that is outside the closed area of ​​the boundary expansion curve to obtain the outer line segment; obtain the smallest area region in the region composed of the outer line segment and the boundary expansion curve, and trim the boundary expansion curve that constitutes the smallest area region; obtain the center line of the outer ring main rib of the pressure device based on the outer line segment and the trimmed expansion boundary line curve.

[0011] Furthermore, the outer curve includes the outer trimming line, the outer flange line, and the outer shaping line.

[0012] Furthermore, in the process of obtaining the minimum area region among the regions composed of the outer line segments and the boundary expansion curves, when there are multiple outer curves, the trimming submodule obtains the minimum area region composed of each outer extension curve and the boundary expansion curve.

[0013] Furthermore, the operation module also includes an expansion submodule. The specific steps of the operation module to obtain the boundary expansion curve based on the product surface of the previous process are as follows: the projection submodule extracts the boundary curve of the product surface of the previous process and projects the boundary curve onto the XY plane to obtain the boundary projection curve; the expansion submodule expands the boundary projection curve at equal intervals to obtain the boundary expansion curve.

[0014] Furthermore, the minimum spacing between the boundary expansion curve and the boundary projection curve is 10 mm.

[0015] The technical principle and beneficial effects of this invention are as follows: This invention obtains the original boundary curve and outer curve of the product surface from the previous process. Since both the original boundary curve and the outer curve are 3D lines, they are projected separately. To ensure that the pressure feeder does not interfere with the mold operation while pressing the material, the boundary projection curve is enlarged during the generation of the outer ring main rib centerline. The outer curve is the processing curve for this process. Extending the outer projection curve is to reserve positions for the pressure feeder's cutting tool to advance and retract. Then, the boundary curve is trimmed according to the extended outer curve to obtain the outer ring main rib centerline of the pressure feeder. Compared with the prior art, this invention does not require manual drawing and does not require multiple modifications. The system described in this invention can quickly and accurately output the outer ring main rib centerline of the pressure feeder, improving the generation efficiency and positioning and fixing accuracy of the outer ring main rib centerline. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the system for generating the center line of the outer ring main rib of a pressure feeder according to the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the product surface of the previous process, the boundary shrinkage curve, and the outer shrinkage curve in the embodiment;

[0018] Figure 3 This is a schematic diagram of the boundary reduction curve, the outer perimeter reduction curve, the guide plate reference line, and the side pin reference line in the embodiment.

[0019] Figure 4 This is a schematic diagram of the structure of extending the outer shrinkage curve, extending the guide plate reference line, and extending the side pin reference line in the embodiment;

[0020] Figure 5 This is a schematic diagram of the trimming process of the boundary reduction curve in the embodiment;

[0021] Figure 6This is a schematic diagram of the trimming process of the boundary reduction curve in the embodiment;

[0022] Figure 7 This is a schematic diagram of the structure of the outer ring main reinforcement centerline obtained after cutting in the embodiment;

[0023] Figure 8 This is a schematic diagram of the structure of the center line of the outer ring main rib of the pressure feeder in the embodiment;

[0024] Figure 9 This is a schematic diagram of the structure of the guide plate and side pin in the embodiment;

[0025] Figure 10 This is a schematic diagram of the guide plate reference line in the embodiment;

[0026] Figure 11 This is a schematic diagram of the side pin reference line in the embodiment.

[0027] Figure reference numerals: 1. Boundary reduction curve; 2. Outer perimeter reduction curve; 3. Previous process product surface; 5. Minimum area region; 7. Outer ring main rib centerline; 8. Pressure plate; 9. Guide plate; 10. Side pin; 11. Guide plate translation line; 12. Guide plate tilt line; 13. Guide plate parallel line; 14. Guide plate mounting surface; 15. Guide plate reference line; 21. Side pin tilt line; 22. Side pin translation line; 23. Side pin mounting surface; 24. Side pin reference line. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] As attached Figure 1 As shown, the present invention provides a system for generating the centerline of the outer ring main rib of a pressure feeder, including an input module, an operation module, a judgment module and an output module;

[0031] The input module is used to obtain the outer curve; the outer curve refers to the boundary curve of the product surface obtained in the current process; the outer curve includes the outer trimming line, the outer flange line and the outer shaping line; in this embodiment, the input module can be drawing software to identify and extract the outer curve.

[0032] The operation module is used to project the outer curve onto the XY plane to obtain the outer projection curve. The operation module is also used to reduce the outer projection curve at equal intervals to obtain the outer reduction curve 2.

[0033] The judgment module is used to determine whether the outer shrinking curve 2 forms a closed curve; if the outer shrinking curve 2 forms a closed curve, the output module is activated to output the outer shrinking curve; if the outer shrinking curve 2 cannot form a closed curve, the input module is activated.

[0034] The input module is also used to obtain the previous process product surface 3, the guide plate mounting surface 14 of the pressure device 8, and the side pin mounting surface 23 of the pressure device 8; specifically, the mounting positions of the guide plate 9 and the side pin 10 are as shown in the attached figure. Figure 8 and attached Figure 9 As shown;

[0035] As attached Figure 2 As shown, the operation module is also used to obtain the boundary reduction curve 1 based on the product surface 3 of the previous process; the operation module is used to generate the guide plate reference line 15 based on the guide plate mounting surface 14 of the pressure device 8, and to generate the side pin reference line 24 based on the side pin mounting surface 23 of the pressure device 8; the operation module is also used to trim the boundary reduction curve 1 based on the outer reduction curve 2, the guide plate reference line 15 and the side pin reference line 24 to obtain the outer ring main rib centerline 7 of the pressure device 8;

[0036] The output module is used to output the center line 7 of the outer ring main rib of the pressure feeder 8. (See attached diagram) Figure 7 As shown, the generated outer ring main rib centerline 7 exists in the form of a sketch; in this embodiment, the output module is preferably a display device for displaying the obtained outer ring main rib centerline 7 of the pressure plater 8. The output module can also be a printing device for printing the outer ring main rib centerline 7 of the pressure plater 8 onto paper for display.

[0037] Specifically, the distance between the outer shrinking curve 2 and the outer projection curve is the first shrinking distance; the calculation process of the first shrinking distance is as follows:

[0038]

[0039] Where d1 represents the first reduction gap, T2 represents the thickness of the main rib of the pressure ring, and D represents the minimum distance between the main rib of the pressure ring and the outline of the pressure ring. In this embodiment, the thickness of the main rib is preferably 40mm or 50mm, and the minimum distance D between the main rib of the pressure ring and the outline of the pressure ring is 10mm. In other implementations, the thickness of the main rib is obtained according to the mold process, and the minimum distance D between the main rib of the pressure ring and the outline of the pressure ring is obtained manually, for example, 15mm or 20mm.

[0040] Specifically, the operation module includes a projection submodule, an extension submodule, a reduction submodule, and a clipping submodule;

[0041] The projection submodule is used to project the outer curve onto the XY plane to obtain the outer projection curve;

[0042] The extension submodule is used to extend both ends of the outer projection curve to obtain the outer extended curve;

[0043] The shrinking submodule is used to shrink the outer extended curve at equal intervals to obtain the outer shrunken curve 2;

[0044] The trimming submodule is used to trim the boundary shrinking curve 1 according to the outer shrinking curve 2 to obtain the center line 7 of the outer ring main rib of the pressure plater 8.

[0045] Specifically, the extension distance of the outer projection curve 2 is greater than the radius of the machining tool of the pressure feeder 8. In this embodiment, the radius of the machining tool of the pressure feeder 8 is preferably 16mm, so the extension distance of the outer projection curve 2 is preferably 18mm, 30mm, or 50mm. In other embodiments, the machining tool of the pressure feeder 8 is selected according to the material and size of the pressure feeder 8. This extension step is to ensure that the pressure feeder 8 has sufficient space for the machining infeed and retraction of the outer extension curve 2 during the machining process along the center line 7 of the outer ring main rib.

[0046] Specifically, the operation module also includes an identification submodule, which is used to obtain the intersection points of the outer shrinking curve 2, the guide plate reference line 15, the side pin reference line 24 and the boundary shrinking curve 1 as cutting intersection points, and the number of cutting intersection points is 2; the cutting submodule is used to cut the boundary shrinking curve 1 according to the cutting intersection points to obtain the center line 7 of the outer ring main rib of the pressure plater 8.

[0047] As attached Figure 3 As shown, the process by which the trimming submodule trims the boundary reduction curve 1 based on the trimming intersection point to obtain the center line 7 of the outer ring main rib of the pressure plater 8 is as follows:

[0048] As attached Figure 5 As shown, the trimming submodule trims the line segments on the outer shrinking curve 2 / guide plate reference line 15 / side pin reference line 24 that are outside the closed area of ​​the boundary shrinking curve 1 to obtain the inner line segments.

[0049] The trimming submodule obtains the smallest area region 5 within the region composed of the internal line segments and the boundary shrinking curve 1, and trims the boundary expanding curve 1 that makes up the smallest area region 5; as shown in the attached diagram. Figure 6 As shown, when there are multiple internal curves, the trimming submodule obtains the smallest area region 5 in the region formed by each internal line segment and the boundary shrinking curve 1.

[0050] As attached Figure 7 As shown, the trimming submodule obtains the center line 7 of the outer ring main rib of the pressure plater 8 based on the internal line segment and the trimmed boundary reduction curve 1.

[0051] In this embodiment, the specific steps of the identification submodule to obtain the intersection points of the outer shrinking curve 2, the guide plate reference line 15, the side pin reference line 24 and the boundary shrinking curve 1 are as follows: the identification submodule obtains the number of intersection points of the outer shrinking curve 2, the guide plate reference line 15, the side pin reference line 24 and the boundary shrinking curve 1 respectively.

[0052] If the outer shrinking curve 2 / guide plate reference line 15 / side pin reference line 24 has no intersection with the boundary shrinking curve 1, then the extension submodule is activated. The extension submodule selects the two endpoints of the outer shrinking curve 2 / guide plate reference line 15 / side pin reference line 24 and extends the two ends of the outer shrinking curve 2 / guide plate reference line 15 / side pin reference line 24 along the normal direction of the endpoints, so that the two ends of the extended outer shrinking curve 2 / guide plate reference line 15 / side pin reference line 24 intersect with the boundary expansion curve 1 to obtain two cutting intersection points. Specifically, the extension length of the outer shrinking curve 2 / guide plate reference line 15 / side pin reference line 24 is greater than the processing tool radius of the pressure plate 8.

[0053] As attached Figure 4 As shown, if the outer shrinking curve 2 / guide plate reference line 15 / side pin reference line 24 intersects with the boundary shrinking curve 1, the intersection point is identified as a cutting intersection point; the extension submodule is activated, and the extension submodule selects the end of the outer shrinking curve 2 / guide plate reference line 15 / side pin reference line 24 that does not intersect with the boundary shrinking curve 1, and extends the outer shrinking curve 2 / guide plate reference line 15 / side pin reference line 24 along the normal direction of the endpoint until the endpoint intersects with the boundary shrinking curve 1, thus obtaining another cutting intersection point; specifically, the extension length of the outer extension curve 2 is greater than the machining tool radius of the pressure plate 8;

[0054] If the outer shrinkage curve 2 / guide plate reference line 15 / side pin reference line 24 intersects the boundary shrinkage curve 1 at two points, then the two intersection points are the two cutting intersection points.

[0055] As attached Figure 4As shown, the operation module also includes a chamfering sub-module, which is used to round the corners between the original outer shrinkage curve 2 / guide plate reference line 15 / side pin reference line 24 and the extended line segment; the corner radius is greater than the machining tool radius.

[0056] Specifically, the steps of the operation module to obtain the boundary expansion curve based on the previous process product surface 3 are as follows: the projection submodule extracts the boundary curve of the previous process product surface 3 and projects the boundary curve onto the XY plane to obtain the boundary projection curve; the reduction submodule reduces the boundary projection curve by an equal distance to obtain the boundary reduction curve 1; the distance between the boundary reduction curve 1 and the boundary projection curve is the second reduction distance; the calculation process of the second reduction distance is as follows:

[0057]

[0058] Where d2 represents the second reduction gap, T2 represents the thickness of the main rib of the pressure ring, and D represents the minimum distance between the main rib of the pressure ring and the outline of the pressure ring. In this embodiment, the thickness of the main rib is preferably 40mm or 50mm, and the minimum distance D between the main rib of the pressure ring and the outline of the pressure ring is 10mm. In other implementations, the thickness of the main rib is obtained according to the mold process, and the minimum distance D between the main rib of the pressure ring and the outline of the pressure ring is obtained manually, for example, 15mm or 20mm.

[0059] As attached Figure 10 As shown, the process by which the operation module generates the guide plate reference line 15 based on the guide plate mounting surface 14 of the pressure plate 8 is as follows: the guide plate mounting surface 14 is projected onto the XY plane to obtain the initial guide plate line; the initial guide plate line is extended and translated towards the direction of the center of gravity projection point of the previous process product to obtain the guide plate translation line 11; guide plate tilting lines 12 that are inclined towards the guide plate mounting surface 14 are connected to both ends of the guide plate translation line 11; and guide plate parallel lines 13 that are perpendicular to the guide plate translation line 11 are connected to the other end of the guide plate tilting line 12; the guide plate generation line is formed by the guide plate parallel line 13, the guide plate tilting line 12, and the guide plate translation line 11; specifically, the center of gravity projection point of the previous process product is the point on the XY plane where the center of gravity of the previous process product is projected.

[0060] In this embodiment, the included angle between the guide plate tilt line 12 and the guide plate translation line 11 is 135°; the extension distance of the initial guide plate line is preferably 30mm, that is, the initial guide plate line is extended by 30mm at each end; specifically, the calculation process of the translation distance of the initial guide plate line is as follows:

[0061]

[0062] Where L1 represents the translation distance of the initial line of the guide plate, T2 represents the thickness of the main rib, and S represents the thickness of the guide plate mounting surface 14.

[0063] If attached Figure 11 As shown, the process by which the operation module generates the side pin reference line 24 based on the side pin mounting surface 23 of the pressure device 8 is as follows: the side pin mounting surface 23 is projected onto the XY plane to obtain the initial side pin line; the initial side pin line is extended and translated towards the center projection point of the previous process product to obtain the side pin translation line 22; the two ends of the side pin translation line 22 are respectively connected to the side pin tilt line 21 that is inclined towards the side pin mounting surface 23; the side pin generation line is formed by the side pin tilt line 21 and the side pin translation line 22.

[0064] In this embodiment, the included angle between the side pin tilt line 21 and the side pin translation line 22 is 135°; the extension distance of the initial side pin line is preferably 20mm, that is, the initial side pin line is extended by 20mm at each end; specifically, the calculation process of the translation distance of the initial side pin line is as follows:

[0065]

[0066] Where L2 represents the translation distance of the initial line of the side pin, T2 represents the thickness of the main rib, n1 represents the thickness of the machined surface of the side pin protrusion, and n2 represents the minimum installation distance of the side pin. In this embodiment, n1 is preferably 5mm or 10mm, and n2 is preferably 5mm. In other embodiments, n1 is obtained according to the side pin model.

[0067] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A system for generating the centerline of the outer ring main rib of a pressure feeder, characterized in that, It includes an input module, an operation module, a judgment module, and an output module; The input module is used to obtain the outer curve; The operation module is used to project the outer curve onto the XY plane to obtain the outer projection curve. The operation module is also used to reduce the outer projection curve at equal intervals to obtain the outer reduction curve. The judgment module is used to determine whether the outer shrinking curves form a closed curve; if the outer shrinking curves form a closed curve, the output module is activated to output the outer shrinking curve; if the outer shrinking curves cannot form a closed curve, the input module is activated. The input module is also used to obtain the product surface of the previous process, the guide plate mounting surface of the pressure feeder, and the side pin mounting surface of the pressure feeder; The operation module is also used to obtain the boundary reduction curve based on the product surface of the previous process; The operation module is used to generate guide plate reference lines based on the guide plate mounting surface of the pressure feeder, and to generate side pin reference lines based on the side pin mounting surface of the pressure feeder. The operation module is also used to trim the boundary reduction curve based on the outer reduction curve, guide plate reference line and side pin reference line to obtain the center line of the outer ring main rib of the pressure feeder; The output module is used to output the center line of the outer ring main rib of the pressure feeder.

2. The system for generating the centerline of the outer ring main rib of a pressure feeder as described in claim 1, characterized in that, The operation module includes a projection submodule, an extension submodule, a reduction submodule, and a clipping submodule; The projection submodule is used to project the outer curve onto the XY plane to obtain the outer projection curve; The extension submodule is used to extend both ends of the outer projection curve to obtain the outer extended curve; The shrinking submodule is used to shrink the outer extended curve at equal intervals to obtain the outer shrunken curve; The trimming submodule is used to trim the boundary reduction curve based on the outer reduction curve, guide plate reference line, and side pin reference line to obtain the center line of the outer ring main rib of the pressure feeder.

3. The system for generating the centerline of the outer ring main rib of a pressure feeder as described in claim 2, characterized in that, The operation module also includes an identification submodule: the identification submodule is used to obtain the intersection points of the outer shrinking curve, the guide plate reference line, the side pin reference line and the boundary shrinking curve as the cutting intersection points, and the number of cutting intersection points is 2; the cutting submodule is used to cut the boundary shrinking curve according to the cutting intersection points to obtain the center line of the outer ring main rib of the pressure plater; The specific steps for the identification submodule to obtain the intersection points of the outer shrinkage curve, guide plate reference line, side pin reference line and boundary shrinkage curve are as follows: The identification submodule obtains the number of intersection points of the outer shrinkage curve, guide plate reference line, side pin reference line and boundary shrinkage curve respectively; If the outer shrinking curve / guide plate reference line / side pin reference line has no intersection with the boundary shrinking curve, the extension sub-module is activated. The extension sub-module selects the two endpoints of the outer shrinking curve / guide plate reference line / side pin reference line and extends the two endpoints of the outer shrinking curve / guide plate reference line / side pin reference line along the normal direction of the endpoints, so that the two endpoints of the outer shrinking curve / guide plate reference line / side pin reference line intersect with the boundary shrinking curve to obtain two trimming intersection points. If the outer shrinking curve / guide plate reference line / side pin reference line intersects with the boundary shrinking curve at one point, identify the intersection point as a trimming intersection point; start the extension submodule, the extension submodule selects the end of the outer shrinking curve / guide plate reference line / side pin reference line that does not intersect with the boundary shrinking curve, and extends the outer shrinking curve / guide plate reference line / side pin reference line along the normal direction of the endpoint until the endpoint intersects with the boundary shrinking curve, thus obtaining another trimming intersection point; If the outer shrinkage curve / guide plate reference line / side pin reference line intersects the boundary shrinkage curve at two points, then the two intersection points are identified as the two trimming intersection points.

4. The system for generating the centerline of the outer ring main rib of a pressure feeder as described in claim 3, characterized in that, The operation module also includes a chamfering sub-module, which is used to round the corners between the original outer shrink curve / guide plate reference line / side pin reference line and the extended line segment; the corner radius is larger than the machining tool radius.

5. A system for generating the centerline of the outer ring main rib of a pressure feeder as described in claim 3 or 4, characterized in that, The process by which the trimming submodule trims the boundary reduction curve based on the trimming intersection point to obtain the centerline of the outer ring main rib of the pressure vessel is as follows: The inner line segment is obtained by trimming the line segments on the outer shrinking curve / guide plate reference line / side pin reference line that are outside the closed area of ​​the boundary shrinking curve; Obtain the smallest area region within the region composed of the internal line segments and the boundary shrinking curves, and then trim the boundary shrinking curves that make up the smallest area region. The center line of the outer ring main rib of the pressure feeder is obtained by the internal line segment and the reduced boundary curve after cutting.

6. The system for generating the centerline of the outer ring main rib of a pressure feeder as described in claim 5, characterized in that, In the process of obtaining the minimum area region among the regions composed of internal line segments and boundary shrinking curves, when there are multiple internal lines, the clipping submodule obtains the minimum area region composed of each internal line and boundary shrinking curve.

7. A system for generating the centerline of the outer ring main rib of a pressure feeder as described in claims 1, 2, 3, 4, 6, or 7, characterized in that, The process by which the operation module generates a guide plate reference line based on the guide plate mounting surface of the pressure feeder is as follows: the guide plate mounting surface is projected onto the XY plane to obtain the initial guide plate line; the initial guide plate line is extended and translated towards the projection point of the center of gravity of the previous process product to obtain the guide plate translation line; guide plate tilt lines that are inclined towards the guide plate mounting surface are connected to both ends of the guide plate translation line; and a guide plate parallel line perpendicular to the guide plate translation line is connected to the other end of the guide plate tilt line; the guide plate reference line is formed by the guide plate parallel line, the guide plate tilt line, and the guide plate translation line.

8. A system for generating the centerline of the outer ring main rib of a pressure feeder as described in claims 1, 2, 3, 4, 6, or 7, characterized in that, The process by which the operation module generates a side pin reference line based on the side pin mounting surface of the pressure device is as follows: the side pin mounting surface is projected onto the XY plane to obtain the initial side pin line; the initial side pin line is extended and translated towards the center projection point of the previous process product to obtain the side pin translation line; the two ends of the side pin translation line are respectively connected to the side pin tilt line that is inclined towards the side pin mounting surface; the side pin reference line is formed by the side pin tilt line and the side pin translation line.

9. A system for generating the centerline of the outer ring main rib of a pressure feeder as described in claims 1, 2, 3, 4, 6, or 7, characterized in that, The specific steps by which the operation module obtains the boundary expansion curve based on the product surface of the previous process are as follows: The projection submodule extracts the boundary curve of the product surface from the previous process and projects the boundary curve onto the XY plane to obtain the boundary projection curve; The shrinking submodule reduces the boundary projection curve by an equal distance to obtain the boundary shrinking curve.

10. The system for generating the centerline of the outer ring main rib of a pressure feeder as described in claim 9, characterized in that, The distance between the outer shrinking curve and the outer projection curve is the first shrinking distance; the distance between the boundary shrinking curve and the boundary projection curve is the second shrinking distance; the calculation process for the first and second shrinking distances is as follows: Where d1 represents the first reduction spacing, d2 represents the second reduction spacing, T2 represents the thickness of the main reinforcement of the pressure ring, and D represents the minimum distance between the main reinforcement of the pressure ring and the outline of the pressure ring.

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