A library building method and modeling method for three-dimensional hydraulic interface

Abstract

The present invention proposes a library construction method and modeling method for a three-dimensional hydraulic interface. The library construction method comprises the following steps: selecting a three-dimensional design software as a library construction platform to establish a three-dimensional hydraulic interface model, wherein the three-dimensional design software supports user-defined features or a user-defined design library; using the three-dimensional design software, selecting any cavity as a reference hole, and using the reference hole to locate the remaining cavities to establish a three-dimensional hydraulic interface model; classifying the three-dimensional hydraulic interface model, generating a three-dimensional hydraulic interface library file, and completing the establishment of the three-dimensional hydraulic interface library. The advantages of the present invention are that all cavities of the hydraulic interface are located using the reference hole, thereby improving the modeling speed of the hydraulic interface; and the three-dimensional hydraulic interface model only requires selecting a reference plane and adjusting the characteristic parameters of the cavity, reducing the modeling difficulty.

Description

Technical Field

[0001] The present invention relates to the technical field of computer-aided design, and in particular to a library building method and a modeling method for a three-dimensional hydraulic interface. Background Art

[0002] Hydraulic valve block design involves a variety of standard hydraulic interfaces, each of which has multiple specifications. Each specification contains multiple cavities (up to 15 cavities), each with numerous dimensions and positions. The central cavity of threaded cartridge valves is particularly complex. Mastering the relevant standards requires designers to spend considerable time and training, resulting in significant costs. Traditionally, designers have spent considerable time researching standard documentation and sample materials for each interface. Using the basic straight hole, threaded hole, and sketched hole features provided by 3D design software, they model each hydraulic interface cavity one by one, requiring a complete redefinition of the cavity type, geometry, and dimensions. Completely modeled hydraulic interfaces cannot be reused, necessitating repetition of this tedious process for the next design. Consequently, design processes are generally time-consuming and inefficient. Furthermore, errors are prone to occur during the design process, making it difficult to ensure full compliance with all standard requirements, leading to subsequent design modifications or remanufacturing.

[0003] Existing 3D design software offers parametric-driven modeling or user-defined libraries. However, due to the diverse interfaces of hydraulic components, parametric-driven technology cannot rapidly model all hydraulic interfaces. Existing custom libraries can only automatically generate center bores, not side bores.

[0004] In summary, there is an urgent need for a three-dimensional hydraulic interface library that can be quickly modeled to solve the problems existing in the existing technology. Summary of the Invention

[0005] The present invention aims to provide a library building method and a modeling method for a three-dimensional hydraulic interface. The specific technical solution is as follows:

[0006] A method for building a library of three-dimensional hydraulic interfaces, the specific steps are as follows:

[0007] Step S100: selecting 3D design software, specifically, selecting a 3D design software as a library building platform to build a 3D hydraulic interface model, wherein the 3D design software supports user-defined features or a user-defined design library;

[0008] Step S200: Establishing a three-dimensional hydraulic interface model. Specifically, applying the three-dimensional design software in step S100, selecting any cavity hole as a reference hole, and positioning the remaining cavity holes with the reference hole to establish the three-dimensional hydraulic interface model;

[0009] Step S300: establishing a three-dimensional hydraulic interface library. Specifically, the three-dimensional hydraulic interface model established in step S200 is classified, and a three-dimensional hydraulic interface library file is generated to complete the establishment of the three-dimensional hydraulic interface library.

[0010] Furthermore, in step S200, the specific steps of establishing a three-dimensional hydraulic interface model are as follows:

[0011] Step S201: Establishing a reference hole. Specifically, a reference plane is selected, and a hexahedral mesh is created by stretching. Any face on the hexahedral mesh is selected as a first reference plane, and two adjacent perpendicular faces perpendicular to the first reference plane are selected as second and third reference planes. Any cavity of the hydraulic interface is selected to establish the reference hole.

[0012] Step S202: establishing all cavities. Specifically, all cavities of the hydraulic interface are located and drawn using the reference holes established in step S201 to complete the establishment of a three-dimensional hydraulic interface model.

[0013] Furthermore, in step S201 , the reference holes of different three-dimensional hydraulic interface models select the same positioning reference.

[0014] Furthermore, in step S202, when the array feature is used, the array dimension direction of the cavity hole is consistent with the reference reference plane of the reference hole.

[0015] Furthermore, in step S202, a relational constraint is established between the array size of the cavity holes and the reference hole to complete the positioning between the cavity holes and the reference hole.

[0016] Furthermore, in step S300, the three-dimensional hydraulic interface model is classified according to the hydraulic interface type in the three-dimensional design software;

[0017] Alternatively, the three-dimensional hydraulic interface model is classified according to the design standard of the hydraulic interface.

[0018] The three-dimensional hydraulic interface library building method of the present invention has the following beneficial effects:

[0019] The three-dimensional hydraulic interface library building method in the present invention can design hydraulic interface models for all hydraulic interfaces in hydraulic design, which can meet the most extensive hydraulic design needs. The three-dimensional hydraulic interface model in the present invention positions all cavities through reference holes, and all cavities of the hydraulic interface can be generated at one time during the modeling process.

[0020] In addition, the present invention also proposes a modeling method for a three-dimensional hydraulic interface, which uses the three-dimensional hydraulic interface library established by the above-mentioned library building method, decompresses the three-dimensional hydraulic interface library file into the library file directory in the three-dimensional design software, browses the three-dimensional hydraulic interface library to retrieve the three-dimensional hydraulic interface model, selects the reference reference plane, and completes the modeling of the hydraulic interface.

[0021] Furthermore, two to four reference planes are selected according to the type of the hydraulic interface to complete the modeling of the hydraulic interface.

[0022] The modeling method of the three-dimensional hydraulic interface of the present invention has the following beneficial effects:

[0023] The three-dimensional hydraulic interface modeling method in the present invention realizes rapid modeling of the hydraulic interface by retrieving the three-dimensional hydraulic interface model from the three-dimensional hydraulic interface library, which can lower the technical level requirement threshold for designers, greatly improve modeling efficiency, reduce labor intensity, and ensure that the modeling is correct and meets the standards.

[0024] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 This is a flow chart of the library building method for three-dimensional hydraulic interface;

[0027] Figure 2 It is a flow chart for establishing a three-dimensional hydraulic interface model;

[0028] Figure 3 It is a three-dimensional hydraulic interface model with self-defined features of threaded holes;

[0029] Figure 4 It is a three-dimensional hydraulic interface model of a threaded cartridge valve;

[0030] Figure 5 This is a 3D hydraulic interface model of an SAE flange port (with an O-ring groove). DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0032] Example 1:

[0033] like Figure 1As shown, this embodiment discloses a method for building a library of three-dimensional hydraulic interfaces, and the specific steps are as follows:

[0034] Step S100: Select 3D design software. Specifically, a 3D design software is selected as a library building platform to establish a 3D hydraulic interface model. The 3D design software supports user-defined features or a user-defined design library. The 3D design software in this embodiment can be UG, Proe / Creo, Inventor, Siemens NX, or Solidworks. It should be noted that any 3D design software that supports user-defined features or has a user-defined design library can be used to implement the library building method in this embodiment.

[0035] Step S200: establishing a three-dimensional hydraulic interface model. Specifically, applying the three-dimensional design software in step S100, selecting any cavity hole as a reference hole, positioning the remaining cavity holes with the reference hole, and establishing the three-dimensional hydraulic interface model.

[0036] Step S300: Establishing a 3D hydraulic interface library. Specifically, the 3D hydraulic interface models established in step S200 are classified, and a 3D hydraulic interface library file is generated, completing the establishment of the 3D hydraulic interface library. This embodiment preferably classifies the 3D hydraulic interface models according to the hydraulic interface type in the 3D design software. In addition, the 3D hydraulic interface models can also be classified according to the design standards of the 3D hydraulic interface. The purpose of this is to enable users to quickly select the 3D hydraulic interface model to be modeled based on the classification, quickly generate all the cavities of the 3D hydraulic interface, and thus complete the modeling of the 3D hydraulic interface.

[0037] Furthermore, if Figure 2 As shown, in step S200, the specific steps of establishing a three-dimensional hydraulic interface model are as follows:

[0038] Step S201: Establish a reference hole. Specifically, select a reference plane, stretch to establish a hexahedral mesh, select any surface on the hexahedral mesh as the first reference plane, select two adjacent vertical surfaces perpendicular to the first reference plane as the second and third reference planes, and select any cavity of the hydraulic interface to establish the reference hole. The first reference plane is the plane where the reference hole is placed. In this embodiment, various types of plate valves can use the P port as the reference hole, and other hydraulic interfaces can use the center cavity hole as the reference hole, such as other two-way cartridge valves, threaded cartridge valves, SAE flange interfaces, SAE flange interfaces with O-ring grooves, standardized threaded oil ports, and other hydraulic interfaces.

[0039] Step S202: Create all cavities. Specifically, all cavities of the hydraulic interface are located and drawn using the reference holes established in step S201, completing the creation of a three-dimensional hydraulic interface model. It should be noted that when using array features, the array dimensions of the cavities are aligned with the reference datum plane of the reference holes. Furthermore, to ensure that all cavities of the hydraulic interface are correctly generated, a relational constraint is established between the array dimensions of the cavities and the reference holes based on their central axis, completing the positioning of the cavities and the reference holes.

[0040] Furthermore, the relationship constraint fixes the orientation of the cavity hole relative to the reference hole, thereby forming a three-dimensional hydraulic interface model. The three-dimensional hydraulic interface model can quickly generate all the cavity holes of the hydraulic interface by placing the reference hole, and then modifying the characteristic parameters of the cavity hole to complete the modeling.

[0041] Specifically, in step S201 , the reference holes of different three-dimensional hydraulic interface models select the same positioning reference.

[0042] The 3D hydraulic interface model in this embodiment includes the positioning dimensions of all cavities, as well as their characteristic parameters, such as diameter and depth. When calling a 3D hydraulic interface model from the 3D hydraulic interface library, the reference hole positions and characteristic parameters of the cavities, including but not limited to diameter and depth, can be redefined. During the modeling process, since all cavities in the 3D hydraulic interface model share a positioning dimension constraint with the reference holes, simply defining the reference hole positions allows for rapid generation of all cavities in the 3D hydraulic interface model.

[0043] Example 2:

[0044] This embodiment discloses a method for modeling a three-dimensional hydraulic interface. A three-dimensional hydraulic interface library is established using the library building method described in Example 1. The three-dimensional hydraulic interface library file is decompressed into a library file directory in the three-dimensional design software. The three-dimensional hydraulic interface library is browsed to retrieve a three-dimensional hydraulic interface model, and a reference datum plane is selected to complete the modeling of the hydraulic interface.

[0045] Furthermore, during the modeling process, two to four reference datum surfaces are selected according to the type of hydraulic interface.

[0046] In order to better illustrate the advantages and purpose of this embodiment, the modeling process of different reference datum planes will be described below with examples.

[0047] The modeling process for selecting two reference planes is as follows:

[0048] Specifically, such as Figure 3The threaded hole custom feature shown is preferably modeled using Siemens NX. The three-dimensional hydraulic interface model of the threaded hole custom feature is retrieved from the three-dimensional hydraulic interface library established in Application Example 1, and two reference datum planes are selected. The reference datum planes of the threaded hole custom feature are the placement plane and the positioning direction plane. The placement plane can be any plane, and the positioning direction plane is the plane where the length direction of the threaded hole is located, thereby completing the modeling of the threaded hole custom feature.

[0049] The modeling process for selecting three reference planes is as follows:

[0050] Specifically, such as Figure 4 The threaded cartridge valve shown is preferably modeled using Creo. The three-dimensional hydraulic interface model of the threaded cartridge valve is retrieved from the three-dimensional hydraulic interface library established in Application Example 1, and three reference datum planes are selected. The reference datum planes of the threaded cartridge valve are the main hole placement plane, the side hole placement plane, and the datum plane perpendicular to the main hole placement plane and the side hole placement plane to complete the modeling of the threaded cartridge valve.

[0051] In addition to the threaded hole cartridge valves mentioned above, various plate valves and slide-in cartridge valves can also select three reference datum planes to complete modeling.

[0052] The modeling process for selecting four reference planes is as follows:

[0053] Specifically, such as Figure 5 The SAE flange oil port (with O-ring groove) shown is preferably modeled using Creo. The three-dimensional hydraulic interface model of the SAE flange oil port (with O-ring groove) is retrieved from the three-dimensional hydraulic interface library established in Application Example 1, and four reference datum planes are selected. The reference datum planes of the SAE flange oil port (with O-ring groove) are the O-ring groove placement plane, the length direction datum plane, the width direction datum plane, and the datum plane opposite to the O-ring groove placement plane.

[0054] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A method for building a library of three-dimensional hydraulic interfaces, characterized in that: The specific steps are as follows: Step S100: selecting 3D design software, specifically, selecting a 3D design software as a library building platform to build a 3D hydraulic interface model, wherein the 3D design software supports user-defined features or a user-defined design library; Step S200: Establishing a three-dimensional hydraulic interface model. Specifically, applying the three-dimensional design software in step S100, selecting any cavity hole as a reference hole, and positioning the remaining cavity holes with the reference hole to establish the three-dimensional hydraulic interface model; Step S300: establishing a three-dimensional hydraulic interface library, specifically, classifying the three-dimensional hydraulic interface model established in step S200, generating a three-dimensional hydraulic interface library file, and completing the establishment of the three-dimensional hydraulic interface library; In step S200, the specific steps of establishing a three-dimensional hydraulic interface model are as follows: Step S201: Establishing a reference hole. Specifically, a reference plane is selected, and a hexahedral mesh is created by stretching. Any face on the hexahedral mesh is selected as a first reference plane, and two adjacent perpendicular faces perpendicular to the first reference plane are selected as second and third reference planes. Any cavity of the hydraulic interface is selected to establish the reference hole. Step S202: establishing all cavities. Specifically, all cavities of the hydraulic interface are located and drawn using the reference holes established in step S201 to complete the establishment of a three-dimensional hydraulic interface model.

2. The library construction method according to claim 1, characterized in that In step S201 , the same positioning reference is selected for reference holes of different three-dimensional hydraulic interface models.

3. The library construction method according to claim 2, characterized in that: In step S202, when the array feature is used, the array dimension direction of the cavity holes is consistent with the reference reference plane of the reference hole.

4. The library construction method according to claim 3, characterized in that: In step S202, a relational constraint is established between the array size of the cavity holes and the reference holes to complete the positioning between the cavity holes and the reference holes.

5. The library construction method according to claim 1, characterized in that: In step S300, the three-dimensional hydraulic interface model is classified according to the hydraulic interface type in the three-dimensional design software; Alternatively, the three-dimensional hydraulic interface model is classified according to the design standard of the hydraulic interface.

6. A three-dimensional hydraulic interface modeling method, characterized in that: A three-dimensional hydraulic interface library is established using the library building method described in any one of claims 1 to 5, the three-dimensional hydraulic interface library file is decompressed into the library file directory in the three-dimensional design software, the three-dimensional hydraulic interface library is browsed to retrieve the three-dimensional hydraulic interface model, a reference datum plane is selected, and the modeling of the hydraulic interface is completed.

7. The modeling method according to claim 6, characterized in that: Select two to four reference planes according to the type of hydraulic interface to complete the modeling of the hydraulic interface.

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