Tire mold drawing parameterization system and design method based on profile data

Abstract

The application provides a tire mold drawing parameterization system and design method based on contour data, belongs to the technical field of tire industry, and can solve the problems in the existing tire mold design, such as the need of spending a large amount of energy on the drawing method and formula editing of the first specification when using parameterization software, the need of re-modifying, marking and explaining the obtained parameterized curve, the need of designers to perform a large amount of repeated operation when using non-parameterization software such as AutoCad, low efficiency, and the disadvantage of being not conducive to the subsequent expansion design of the tire mold. The tire mold drawing parameterization system based on contour data comprises a database module, a contour sketch module, a pattern pitch sketch module and a two-dimensional engineering drawing module. Through the design method, the modules are parameterized and correlated with each other, the engineering drawing can be quickly obtained, the standardization and accuracy of the drawing are improved, and the efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tire industry, and particularly relates to a tire mold drawing parameterization system and design method based on contour data. BACKGROUND

[0002] In the traditional tire mold drawing design method, curves and tire drawings are non-parametric design. When the drawing size is wrong or the drawing size is changed, the curves, labels and annotations of the drawing need to be changed again. Moreover, when adding the specifications of the existing pattern, the developers need to confirm the drawing method of the existing drawing according to the existing drawing, and then draw the new specification according to the drawing method. A large number of repeated operations need to be performed by the designers, which is low in efficiency and is not conducive to the subsequent expansion design of the tire mold.

[0003] At present, although the tire mold drawing design has been improved by relying on parameterization software to realize the parameterization of curves, a large amount of effort still needs to be spent on the drawing method and formula editing of the first specification, and the curves obtained by parameterization change need to be modified, labeled and explained again. SUMMARY

[0004] The present application proposes a tire mold drawing parameterization system and design method based on contour data to solve the above technical problems in the prior art. The modules are parameterized and related to each other, the engineering drawing can be quickly obtained, the standardization and accuracy of the drawing are improved, and the efficiency is improved.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] The tire mold drawing parameterization system based on contour data comprises a database module for the design and management of tire contour data, pattern pitch quantity and pattern pitch ratio.

[0007] A contour sketch module is used to read the design data of the database module and create a contour sketch.

[0008] A pattern pitch sketch module is used to create a pattern sketch and is parameterically associated with the contour sketch module.

[0009] A two-dimensional engineering drawing module is used to create a two-dimensional engineering sketch, and the labels and annotations thereof are associated with the pattern and contour sketches.

[0010] Further, in the database module, the data of the existing product mold and the test results of the tire outer edge are summarized and analyzed by Excel to create new mold contour data for subsequent direct calling of catia.

[0011] Further, in the contour sketch module, the existing and expected developed contour patterns are disassembled according to different contour types into crown arc, crown inner arc, sidewall arc, rim protection, parting surface, steel ring and other parts, and each part is modularized by the system, and then each independent module is parameterized.

[0012] Further, in the pattern pitch sketch module, the existing pattern pattern of the tire product is classified, summarized and disassembled into main groove, auxiliary groove, steel sheet and the like, each part is modularized by the system, and the parameters of each independent module are directly associated with the tire mold contour data.

[0013] Further, in the two-dimensional engineering drawing module, the pattern pitch sketch is labeled as a two-dimensional engineering drawing by the system, and the label is associated with the pattern and contour sketch, so that when the pattern and contour sketch change, the two-dimensional engineering drawing can change accordingly without repeated labeling.

[0014] On the other hand, the present application provides a design method of a tire mold drawing parameterization system based on contour data, comprising the following steps:

[0015] S1: According to the development requirements, the existing contour data is compared and analyzed, the contour data required for new development is created in the database, and a database module is established;

[0016] S2: Determine whether the contour model to be created in the system, if yes, go to S4, if not, go to S3;

[0017] S3: Establish a contour sketch using the contour sketch module;

[0018] S4: Determine whether the pattern model to be created in the system, if yes, go to S6, if not, go to S5;

[0019] S5: Establish a pattern sketch using the pattern pitch sketch module;

[0020] S6: Determine whether the engineering drawing model to be created in the system, if yes, go to S8, if not, go to S7;

[0021] S7: Create a two-dimensional engineering drawing using a two-dimensional engineering drawing module.

[0022] Further, the specific steps of step S3 are to select the corresponding crown arc, crown inner arc, sidewall arc, steel ring, and rim protection pattern according to the characteristics of the required contour design, combine them into the required contour, call the data in the database, and establish a contour sketch.

[0023] Further, the specific step of step S5 is that the system directly writes the formula into each pattern element module, directly manages the pattern pitch size and the contour size through the formula, only outputs the contour parameters through the system, reads the related parameters of the contour output, the inserted pattern module is the pattern curve directly associated with the contour, expands the intermediate pitch through the system to obtain the remaining pitches, and establishes the pattern draft.

[0024] Further, the specific step of step S7 is that the parameterized pattern and contour draft are associated, marked, modified and explained through the system, the association between the pattern and contour draft and the two-dimensional engineering drawing is realized, the two-dimensional engineering drawing of the first specification is completed, and the two-dimensional engineering drawing of the subsequent specification can be obtained by extending the existing specification.

[0025] Compared with the prior art, the advantages and positive effects of the present application are that:

[0026] 1. In the pattern pitch draft module, the pattern design of the existing tire product is classified, summarized and disassembled, and is specifically disassembled into a main groove, a secondary groove, a steel sheet and the like, each part is modularized through the system, the pattern style can be quickly designed and combined, the formula is directly written into each pattern element module through the system, the pattern pitch size and the contour size are directly managed through the formula, and since the parameters of each independent module are directly associated with the tire mold contour data, when the pattern size and the contour size design change, only the parameters need to be changed, and the pattern curve and the engineering drawing can be changed with the drawing size, from the pattern style to the pattern drawing, without the need to confirm the drawing principle again and write the formula.

[0027] 2. The two-dimensional engineering drawing module quickly performs two-dimensional engineering drawing marking on the pattern pitch draft module through the system, and associates the two-dimensional engineering drawing with the pattern pitch draft module, so that when the pattern and contour draft change, the two-dimensional engineering drawing can change, without the need to repeat the marking. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A flowchart of a tire mold drawing parameterization design method based on contour data provided by an embodiment of the present application;

[0029] Figure 2 A contour parameter sample drawing provided by an embodiment of the present application;

[0030] Figure 3 A pattern single-pitch parameterization sample drawing provided by an embodiment of the present application. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0032] In order to more clearly and specifically introduce the tire mold drawing parameterization system and design method based on profile data provided by the embodiments of the present application, the following will be described in combination with specific embodiments.

[0033] Referring to the accompanying drawings Figure 1 The system of the present application for tire mold drawing parameterization based on profile data comprises a database module, a profile sketch module, a pattern pitch sketch module, a two-dimensional engineering drawing module, etc.

[0034] The database module is mainly used for the design and management of tire profile data, pattern pitch quantity and pattern pitch ratio. In the database module, the data of existing product molds and the test results of tire outer edges are summarized and analyzed by Excel, and new mold profile data is created for subsequent direct calling of catia.

[0035] The profile sketch module is used to read the design data of the database module and create a profile sketch. Specifically, the existing and expected development profile styles are disassembled according to different profile types, and are split into crown arc, inner crown arc, sidewall arc, rim protection, parting surface, steel ring, etc. Each part is modularized by the system, and then each independent module is parameterized.

[0036] Taking the rim protection as an example, the rim protection is modularized and split into rim protection types such as no rim protection, rim protection I, rim protection II, etc. By selecting different rim protection types, different rim protection style curves are generated, and then the system performs arrangement and combination of different parts to obtain the required profile type.

[0037] The profile data of the database module is called to generate the corresponding parameterized profile sketch, wherein the parameters of each part are as follows:

[0038] OD-mold outer diameter; SW-mold section width;

[0039] RD-rim diameter; RW-rim width;

[0040] USH-mold upper section height; LSH-mold lower section width;

[0041] R1-mold crown top radius 1; R2-mold crown top radius 2

[0042] R3 - mold crown top radius 3; R4 - mold shoulder radius;

[0043] ARC1 - mold crown top radius 1 arc length; ARC2 - mold crown top radius 2 arc length;

[0044] ARC3 - mold crown top radius 3 arc length; ARC4 - mold shoulder arc length;

[0045] r1 - mold crown top radius 1; r2 - mold crown top radius 2

[0046] r3 - mold crown top radius 3; r4 - mold shoulder radius;

[0047] arc1 - mold crown top radius 1 arc length; arc2 - mold crown top radius 2 arc length;

[0048] arc3 - mold crown top radius 3 arc length; arc4 - mold shoulder arc length;

[0049] NSD - mold pattern depth; D - mold parting height;

[0050] URP - upper rim protection arc; LRP - lower rim protection arc;

[0051] Rim protection height; ag1 - bead angle;

[0052] r_l - bead upper arc; r_b - bead inner arc;

[0053] s - bead angle change width;

[0054] TAW - mold crown arc length, TAW = ARC1 + ARC2 + ARC3;

[0055] TDW - mold parting upper arc length, TDW = ARC1 + ARC2 + ARC3 + ARC4.

[0056] According to the characteristics of actual use and commonly used profile combinations, the above profile sketch is further modularized, so that the commonly used profiles do not need to be operated redundantly, and only the profile data parameters need to be provided, and the profile engineering drawing can be directly generated.

[0057] In the existing pattern pitch design method, the pattern style is usually designed first, and then the pattern pitch is designed. In actual operation, since the pattern style has no associated size and custom drawing method, the drawing method needs to be re-specified, and cannot be directly extended to the remaining pattern pitches.

[0058] The pattern pitch sketch module of the application classifies, summarizes and disassembles the pattern design style of the existing tire product, specifically disassembles into main groove, auxiliary groove, steel sheet, etc., modularizes each part through the system, and the parameters of each independent module are directly associated with the tire mold contour data. Specifically, the main groove is selected, then the corresponding auxiliary groove and steel sheet are selected according to the design requirements, inserted into the above main groove, combined, and a new parameterized pattern intermediate pitch is obtained. The intermediate pitch is expanded through the system to obtain the remaining pitches.

[0059] By collecting enough and detailed pattern styles in advance, a pattern design style library is established in the system, and a plurality of new pattern design styles can be formed by splicing or parameter adjustment, and the drawing method or formula of the pattern design style does not need to be edited again, simplifying the design.

[0060] In the existing design, when obtaining the contour sketch and designing the pattern sketch, the crown arc (TAW) and the arc length above the parting surface (TDW) of the contour need to be measured again, and then the length is associated with the pattern parameters for calculation of the pattern size. In the present application, since the pattern has been disassembled and modularized and associated with the contour data, when the pattern curve is obtained, after the contour design is completed, only the TAW, TDW and OD of the contour are output by the system, and the inserted pattern module is directly associated with the contour pattern curve. The related parameters output by the contour include the crown arc (TAW) of the contour, the arc length above the parting surface (TDW) and the mold outer diameter (OD), wherein,

[0061] TAW'-pattern initial design mold crown arc length

[0062] TDW'-pattern initial design arc length above the parting surface

[0063] L-pattern pitch length; L1-first pitch length; L2-second pitch length...

[0064] L'-pattern initial design pitch length;

[0065] h1-pattern longitudinal positioning size 1; h1_1-first pitch h1 size, h1_2-second pitch h1 size...

[0066] h1'-pattern initial design h1 length;

[0067] h2-pattern longitudinal positioning size 2; h2_1-first pitch h1 size, h2_2-second pitch h1 size...

[0068] h2'-pattern initial design h2 length;

[0069] h3 / h4 / h5...

[0070] S1 - Horizontal dimension of the pattern 1; S1' - Length of the initial pattern design S1;

[0071] S2 - Horizontal dimension of the pattern 2; S2' - Initial design length of the pattern S2;

[0072] S3 / S4 / S5...

[0073] Tread pattern longitudinal data is correlated with tire OD.

[0074] Define the number of patterns for different pitches, such as 5-pitch patterns: n1, n2, n3, n4, n5

[0075] Define the ratio of different pitch lengths as L1:L2:L3:L4:L5 = 0.8:0.9:1.0:1.1:1.2

[0076] 1)L

[0077] L1=OD*PI / (n1*0.8+n2*0.9+n3*1.0+n4*1.1+n5*1.2)*0.8;

[0078] L2=OD*PI / (n1*0.8+n2*0.9+n3*1.0+n4*1.1+n5*1.2)*0.9;

[0079] L3=OD*PI / (n1*0.8+n2*0.9+n3*1.0+n4*1.1+n5*1.2)*1.0;

[0080] L4=OD*PI / (n1*0.8+n2*0.9+n3*1.0+n4*1.1+n5*1.2)*1.1;

[0081] L5=OD*PI / (n1*0.8+n2*0.9+n3*1.0+n4*1.1+n5*1.2)*1.2;

[0082] 2)h

[0083] ①h1:

[0084] h1_1 = (L1 / L') * h1';

[0085] h1_2 = (L2 / L') * h1';

[0086] h1_3 = (L3 / L') * h1';

[0087] h1_4 = (L4 / L') * h1';

[0088] h1_5 = (L5 / L') * h1';

[0089] h2: ② h2:

[0090] h2_1=(L1 / L')*h1';

[0091] h2_2=(L2 / L')*h1';

[0092] h2_3=(L3 / L')*h1';

[0093] h2_4=(L4 / L')*h1';

[0094] h2_5=(L5 / L')*h1';

[0095] h3.....

[0096] Pattern transverse dimension is associated with the TAW / TDW of the tire

[0097] TAW=(ARC1+ARC2+ARC3)*2

[0098] TDW=(ARC1+ARC2+ARC3+ARC4)*2

[0099] S1=TAW / TAW'*S1';

[0100] S2=TAW / TAW'*S2';

[0101] S3=....

[0102] In the existing engineering drawing design, whether it is AutoCAD or parametric software design, the engineering drawing needs to be drawn and explained by technical personnel bit by bit, although the pattern curve is completed parameterization, but after being converted into engineering drawing, further drawing, explanation and annotation are still needed, the workload is extremely large, and the drawing process is manual operation, which is easy to cause annotation errors, and the designed drawing is not enough standard and unified.

[0103] The two-dimensional engineering drawing module of the application quickly performs two-dimensional engineering drawing annotation on the pattern pitch sketch through the system, and associates the annotation with the pattern and contour sketch, so that when the pattern and contour sketch change, the two-dimensional engineering drawing can change accordingly, without repeated annotation.

[0104] In operation, the cross-sectional view and annotation module of the two-dimensional engineering drawing are modularized, different types of engineering drawing cross-sectional views can be called through the system, the parameters are updated, and the updated cross-sectional view is obtained.

[0105] After obtaining the two-dimensional engineering drawing of the above first specification, the standard and annotation of the drawing are performed again, when the pattern and contour sketch change, only fine tuning is needed, and the drawing of the new product can be obtained.

[0106] The application is based on a design method of a tire mold drawing parameterization system based on profile data, comprising the following steps:

[0107] S1: According to the development requirements, the existing profile data is compared and analyzed, the profile data required for new development is created in the database, and a database module is established;

[0108] S2: Determine whether the profile model to be created is in the system, if yes, go to S4, if no, go to S3;

[0109] S3: According to the characteristics of the required profile design, select the corresponding crown arc, inner crown arc, sidewall arc, steel ring, and rim protection pattern, combine them into the required profile, call the data in the database, and establish a profile sketch module;

[0110] S4: Determine whether the pattern model to be created is in the system, if yes, go to S6, if no, go to S5;

[0111] S5: Read the related parameters output by the profile, the inserted pattern module is the pattern curve directly associated with the profile, expand the intermediate pitch through the system to obtain the remaining pitches, and establish a pattern pitch sketch module;

[0112] S6: Determine whether the engineering drawing model to be created is in the system, if yes, go to S8, if no, go to S7;

[0113] S7: Create a two-dimensional engineering drawing using a two-dimensional engineering drawing module, associate, modify, and explain the parameterized pattern and profile sketch through the system, realize the association between the pattern and profile sketch and the two-dimensional engineering drawing, complete the two-dimensional engineering drawing of the first specification, and the two-dimensional engineering drawing of the subsequent specifications can be obtained by expanding the existing specifications.

[0114] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; for those skilled in the art, the technical solutions described in the above embodiments can be modified, or some technical features can be replaced, and all these modifications or changes do not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the present application.

Claims

1. A method for designing a profile data based tire mold drawing parameterization system, characterized in that, Comprise the following steps: S1: according to the development needs, the existing profile data is compared and analyzed, the profile data required by new development is created in the database, and the database module is established, wherein the database module is used for the design and management of tire profile data, pattern pitch number and pattern pitch ratio; S2: determine whether there is a profile model to be created in the system, if yes, go to S4, if not, go to S3; S3: establish the profile sketch by using the profile sketch module, wherein the profile sketch module is used for reading the design data of the database module, parameterizing each part obtained by decomposing the profile through the system, and creating the profile sketch; S4: determine whether there is a pattern model to be created in the system, if yes, go to S6, if not, go to S5; S5: write the formula directly into each pattern element module through the system, manage the pattern pitch size and profile size directly through the formula, output the profile parameters only through the system, read the related parameters output by the profile, and insert the pattern module which is directly associated with the profile curve, expand the intermediate pitch through the system to obtain the remaining pitch, and establish the pattern sketch, wherein the pattern pitch sketch module decomposes the pattern pattern style through the system, modularizes each part, and is associated with the profile sketch module parameters, and is used for creating the pattern sketch; S6: determine whether there is an engineering drawing model to be created in the system, if not, go to S7; S7: create a two-dimensional engineering drawing by using a two-dimensional engineering drawing module, wherein the two-dimensional engineering drawing module quickly performs two-dimensional engineering drawing annotation on the pattern pitch sketch, and associates the annotation and comment with the pattern and profile sketch, and is used for creating a two-dimensional engineering sketch.

2. The method of designing a profile data based tire mold drawing parameterization system of claim 1, wherein, In the database module, the data of the existing product mold and the test results of the tire outer edge are summarized and analyzed by Excel to create new mold profile data for subsequent direct call of catia.

3. The method of designing a profile data based tire mold drawing parameterization system of claim 2, wherein, In the profile sketch module, the existing and expected development profile styles are decomposed according to different profile types, and are split into crown arc, crown inner arc, sidewall arc, rim protection, parting surface and rim, each part is modularized through the system, and then each independent module is parameterized.

4. The method of designing a profile data based tire mold drawing parameterization system of claim 3, wherein, In the pattern pitch sketch module, the pattern pattern style of the existing tire product is classified, summarized and decomposed into main groove, auxiliary groove and steel sheet, each part is modularized through the system, and the parameters of each independent module are directly associated with the tire mold profile data.

5. The method of designing a profile data based tire mold drawing parameterization system of claim 4, wherein, In the two-dimensional engineering drawing module, the pattern pitch sketch is annotated by the system, and the annotation is associated with the pattern and profile sketch, so that when the pattern and profile sketch change, the two-dimensional engineering drawing can change without repeated annotation.

6. The method of designing a profile data based tire mold drawing parameterization system of claim 1, wherein, The specific steps of step S3 are as follows: according to the characteristics of the required profile design, selecting the corresponding crown arc, crown inner arc, sidewall arc, rim and rim protection style, combining the required profile, calling the data in the database, and establishing the profile sketch.

7. The method of designing a profile data based tire mold drawing parameterization system of claim 1, wherein, The specific step of step S7 is that the parameterized pattern and the contour sketch are associated, marked, modified and explained by the system, the association between the pattern and the contour sketch and the two-dimensional engineering drawing is realized, and the two-dimensional engineering drawing of the first specification is completed. The two-dimensional engineering drawing of the subsequent specification can be obtained by extending the existing specification.

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