CN107798179A - A kind of tyre tread key parameter method for automatic measurement and system - Google Patents
A kind of tyre tread key parameter method for automatic measurement and system Download PDFInfo
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- CN107798179A CN107798179A CN201710968151.XA CN201710968151A CN107798179A CN 107798179 A CN107798179 A CN 107798179A CN 201710968151 A CN201710968151 A CN 201710968151A CN 107798179 A CN107798179 A CN 107798179A
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- 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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/10—Noise analysis or noise optimisation
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Abstract
The invention discloses a kind of tyre tread key parameter method for automatic measurement and system, including the characteristic according to corresponding to all subclass of tire tread 2D decorative patterns measure tire 2D pattern elements；Tire 2D decorative pattern up-and-down boundary lines are closed, groove area is calculated using areal calculation function；Tire entity before cutting and all subclass are measured, and measurement result is handled to obtain each groove volume；According to the characteristic, groove area and groove volume, tire top face tables of data and groove tables of data are obtained；According to the tire top face tables of data and groove tables of data of measurement gained, tyre surface traverse furrow groove furrow bank angle, longitudinal furrow furrow bank angle are calculated, and extract longitudinal furrow furrow bank data, traverse furrow furrow bank data；The longitudinal furrow furrow bank data point is calculated, and according to the numbers of each row mesosulcus data in permutation proportion, calculate the number of main groove.Energy automatic measurement of the invention calculates tyre surface 2D decorative pattern parameters.
Description
Technical field
The present invention relates to tire industry technical field, more particularly to a kind of tyre tread key parameter method for automatic measurement and
System.
Background technology
Because tyre tread key parameter can directly influence the performances such as draining and the noise of tire, therefore by tire
Decorative pattern key parameter, which calculates, to have great importance, tire when can analyze different parameters type using the parameter of acquisition
Can such as noise, comfortableness and security etc. quality, Top-Down Design and production and processing for tire provide data supporting.
It is in the acquisition of parameter, the defects of traditional interactive approach：First, it is necessary to user in parameter acquiring
Largely repeated, efficiency is low.Second, can not tire top face circular runout of the Accurate Analysis caused by processing factors.
Third, the tyre tread furrow bank angle actually produced can not be calculated.
The content of the invention
It is an object of the invention to provide a kind of tyre tread key parameter method for automatic measurement and system, improves decorative pattern ginseng
The efficiency that number obtains.
To realize object above, in a first aspect, a kind of tyre tread key parameter method for automatic measurement of present invention offer is：
S1, the characteristic according to corresponding to all subclass of tire tread 2D decorative patterns measure tire 2D pattern elements
According to；
S2, tire 2D decorative pattern up-and-down boundary lines are closed, utilize areal calculation function to calculate groove area；
S3, the tire entity before cutting and all subclass are measured, and measurement result is handled
Obtain each groove volume；
S4, according to the characteristic, groove area and groove volume, obtain tire top face tables of data and decorative pattern
Ditch tables of data；
S5, tire top face tables of data and groove tables of data according to measurement gained, calculate tyre surface traverse furrow groove furrow bank
Angle, longitudinal furrow furrow bank angle, and extract longitudinal furrow furrow bank data, traverse furrow furrow bank data；
S6, the longitudinal furrow furrow bank data point is calculated, and according to the numbers of each row mesosulcus data in permutation
Proportion, calculate the number of main groove.
Wherein, described step S1, is specifically included：
Model root vertex is obtained by obtaining part feature handle；
All subclass of tyre surface 2D decorative patterns are obtained using the method for feature traversal；
Characteristic corresponding to corresponding measuring method measurement tire 2D pattern elements is used using each subclass.
Wherein, described step S2, is specifically included：
Data point corresponding to the acquisition upper and lower border of tire 2D grooves and the upper and lower border of each decorative pattern；
It is filled after up-and-down boundary line is closed；
Measure the groove area after filling one by one using GetArea () function.
Wherein, described step S3, is specifically included：
Obtained using the method for feature based tree traversal without the entity before cutting entity and all dividing body set；
All elements volume and arranged in measuring assembly using bubble sort method with order from big to small；
Each groove volume is calculated using following iterative formula：
Wherein NGGroove total number is represented,N-th of groove volume is represented,Entity body before representative is not cut
Product,Represent the cutting body volume remained by using n-th of decorative pattern dough sheet cutting entity procedure.
Wherein, described step S5, it is specially：
Calculating tyre surface traverse furrow groove furrow bank angle is specially：
Whole groove is cut into small groove using Differential Properties；
It is fitted to obtain ditch wall using the data point in continuous adjacent groove section, and calculates ditch wall and cut flat with micro-
The angle in face；
Angle using the I d median of all angle values as traverse furrow groove furrow bank；
Described tyre surface longitudinal furrow groove furrow bank angle calculation process includes：
All cross-section datas of complete cycle longitudinal furrow are all added to a section；
Extract longitudinal furrow furrow bank data point and fitting a straight line is carried out to the longitudinal furrow furrow bank data of extraction using least square method；
According to the angle of fitting a straight line result and tire top face method arrow and as longitudinal furrow groove furrow bank angle；
The process of described extraction longitudinal furrow furrow bank data includes：
Each data of the main groove along complete cycle scope are extracted in described decorative pattern tables of data；
Complete cycle data are divided into certain number and every part of data are overlapped with processing so as to filter out bounce point；
By the groove data that the Data Integration of all numbers is a section, data point slope is transversely calculated；
Longitudinal furrow furrow bank data point slope is judged whether in setting range, if being then defined as longitudinal furrow furrow bank data, if not
It is non-longitudinal furrow furrow bank data then to determine the data point；
The process of described extraction traverse furrow furrow bank data specifically includes：
Coordinate skin plane is divided into by eight quadrants apart from size according to traverse furrow furrow bank data point to two reference axis；
Judge the data point in eight quadrants, and by the data point in the most quadrant of number of data points project to away from
The nearest reference axis of the quadrant；
The intermediate point inside projection point set is found out, and judges other subpoints to the distance of intermediate point whether in predetermined threshold value
It is interior；
If, it is determined that the point corresponding to the subpoint is traverse furrow furrow bank data point.
Wherein, described step S6, is specifically included：
The number of each row mesosulcus furrow bank data and the proportion in permutation are calculated successively；
Judge whether the ratio value is more than default proportion threshold value；
If, it is determined that the row are longitudinal furrow decorative pattern borders, and go out main groove number according to longitudinal furrow decorative pattern feature modeling.
Wherein, after described step S6, in addition to：
S7, calculated according to the deviation at any tire top number of cross-sections strong point and datum mark, obtain tire arbitrary section
Circular runout situation, described datum mark is the intersection point of any circumference face and tire top lines.
Second aspect, the present invention provide a kind of tyre tread key parameter automatic measurement system, including：Tyre surface 2D decorative patterns are joined
Number measurement module, groove area calculation module, groove volume computing module, groove furrow bank angle calculation module, main flower
Groove number computing module and tyre surface circular runout analysis module；
Tyre surface 2D decorative patterns parameters measurement module is used to measure tire 2D decorative patterns according to all subclass of tire tread 2D decorative patterns
Characteristic corresponding to graphic element, including tire top face tables of data and groove tables of data；
Groove area calculation module is used to be closed on tire 2D decorative pattern up-and-down boundary lines, utilizes areal calculation function
Calculate groove area；
Groove volume computing module is used to measure the tire entity before cutting and all subclass, and
Measurement result is handled to obtain each groove volume；
Groove furrow bank angle calculation module is used for tire top face tables of data and groove tables of data according to measurement gained,
Tyre surface traverse furrow groove furrow bank angle, longitudinal furrow furrow bank angle are calculated, and extracts longitudinal furrow furrow bank data, traverse furrow furrow bank data；
Main groove number computing module is used to calculate the longitudinal furrow furrow bank data point, and is indulged according in each row
The number of ditch data proportion in permutation, calculate the number of main groove；
Tyre surface circular runout analysis module is used to be carried out according to the deviation at any tire top number of cross-sections strong point and datum mark
Calculate, obtain the circular runout situation of tire arbitrary section, described datum mark is any circumference face and the intersection point of tire top lines.
Compared with prior art, there is following technique effect in the present invention：The present invention quickly can know to tyre surface 2D decorative patterns
Not, and according to recognition result classification processing is carried out, so as to measure tire 2D flowers using distinct methods for different type set
Characteristic corresponding to line graphic element, to carry out automatic measurement calculating to tyre surface 2D decorative patterns parameter.And can be by one by one
Groove border is filled, then reference area, therefore it can not only calculate groove area but also can obtain sea
Land ratio, and then provide useful data for noise from tire tread patterns analysis.
Brief description of the drawings
Below in conjunction with the accompanying drawings, the embodiment of the present invention is described in detail：
Fig. 1 is a kind of schematic flow sheet of tyre tread key parameter method for automatic measurement in the present invention；
Fig. 2 is tyre surface 2D decorative patterns parameter auto-testing of the present invention and storage flow chart；
Fig. 3 is that the present invention calculates groove volume schematic flow sheet；
Fig. 4 is that data of the present invention import solution schematic diagram；
Fig. 5 is file consolidation form schematic flow sheet of the present invention；
Fig. 6 is that the present invention calculates main groove number design sketch；
Fig. 7 is a certain cross-section radial bounce schematic diagram of tire of the present invention；
Fig. 8 is a kind of structural representation of tyre tread key parameter automatic measurement system in the present invention；
Fig. 9 is the automatic measurement system structure chart of tyre tread key parameter in the present invention.
Embodiment
In order to illustrate further the feature of the present invention, please refer to the following detailed descriptions related to the present invention and accompanying drawing.Institute
Accompanying drawing is only for reference and purposes of discussion, is not used for being any limitation as protection scope of the present invention.
As shown in figure 1, present embodiment discloses a kind of tyre tread key parameter method for automatic measurement, comprise the following steps
S1 to S5：
S1, the characteristic according to corresponding to all subclass of tire tread 2D decorative patterns measure tire 2D pattern elements
According to；
S2, tire 2D decorative pattern up-and-down boundary lines are closed, utilize areal calculation function to calculate groove area；
S3, the tire entity before cutting and all subclass are measured, and measurement result is handled
Obtain each groove volume；
S4, tire top face tables of data and groove tables of data according to measurement gained, calculate tyre surface traverse furrow groove furrow bank
Angle, longitudinal furrow furrow bank angle, and extract longitudinal furrow furrow bank data, traverse furrow furrow bank data；
S5, the longitudinal furrow furrow bank data point is calculated, and according to the numbers of each row mesosulcus data in permutation
Proportion, calculate the number of main groove.
Further, as shown in Fig. 2 step S1 specifically includes following fine division step：
Model root vertex is obtained by obtaining part feature handle；
It should be noted that root node object is based on CATIA/CAA developing instruments and obtains according to the following procedure, specifically
Including：
A, the currently active editing machine, Jin Ertong are returned by GetCurrentEditor () function in document editor
Cross GetDocument () function and return to document corresponding with the editing machine；
B, acquisition root path pointer interface CATInit and utilization GetRootContainer () function obtain root container and will
It is converted into Part containers；
C, part feature, namely root knot point object are obtained using GetPart () function.
All subclass of tyre surface 2D decorative patterns are obtained using the method for feature traversal；
It should be noted that 2D decorative pattern geometric figure collection is based on CATIA/CAA developing instruments and traveled through according to the following procedure：
A, retrieval part geometry feature set interface CATIPartRequest is obtained by the part feature of acquisition；
B, the GetSurfBodies () function provided by CATIPartRequest interfaces retrieves all geometric figure collection,
Position of the 2D decorative pattern geometric figure collection in model tree is determined according to GetPosition () function, and then obtains relief features pair
As pointer；
C, the GetAllChildren () function provided by CATIDescendants interfaces retrieves 2D decorative pattern geometry
Graphical-set.
Characteristic corresponding to corresponding measuring method measurement tire 2D pattern elements is used using each subclass.
It should be noted that geometric parameter is based on CATIA/CAA developing instruments and measured according to the following procedure：
A, obtain element number during different subsets are closed using Size () function and utilize member in the method extraction set of traversal
Element；
B, pointer corresponding to CATIMeasurableInContext interfaces is obtained, is utilized for the element in different sets
Different functions under the interface measure, such as：Object oriented is obtained with GetAlias () function, is utilized GetCoord ()
Function obtains coordinate value, and line segment end points is obtained with GetVertex () function, and straight length is obtained with GetLength () function,
Central coordinate of circle is obtained with GetCenter () function, arc radius is obtained with GetRadius () function, so as to realize acquisition geometry
The function of parameter.
Further, step S2, following fine division step is specifically included：
Data point corresponding to the acquisition upper and lower border of tire 2D grooves and the upper and lower border of each decorative pattern；
It is filled after up-and-down boundary line is closed；
Measure the groove area after filling one by one using GetArea () function.
Further, as shown in figure 3, step S3, is specifically included：
Obtained using the method for feature based tree traversal without the entity before cutting entity and all dividing body set；
All elements volume and arranged in measuring assembly using bubble sort method with order from big to small；
Each groove volume is calculated using following iterative formula：
Wherein NGGroove total number is represented,N-th of groove volume is represented,Entity body before representative is not cut
Product,Represent the cutting body volume remained by using n-th of decorative pattern dough sheet cutting entity procedure.
Further, as illustrated in figures 4-5, step S4, specifically include：
S41, the scan data files such as characteristic, groove area and groove volume are unified into form, specifically such as
Under：
(1) form decollator S and first trip field number N1 is obtained；
(2) judge whether N1 is more than setting threshold values, if it is, can directly think that N1 is tables of data columns Nc, if not,
Then first trip is deleted, other row field numbers is then calculated and is seen as columns Nc；
(3) newline number is read, is denoted as line number Nr；
(4) i=1 is made, i.e., proceeds by uniform format processing from the first row；
(5) current line decollator number Ns and data amount check n is read, judges whether it is equal, should if unequal
Addition decollator makes decollator number equal to row below, if equal, directly performs step (6)；
(6) judge whether data amount check is equal with row number, if it is not, then needing to add phase simultaneously behind the row data
The specified data and decollator of poor number, if it is, making i++, determine whether to reach last column, if it is, terminate, if
It is no, perform step (5)；
S42, the file handled well is stored in specified path and uploaded onto the server；
S42, using BULK INSERT () function file is imported into the database of server.
Further, in step S5, calculating tyre surface traverse furrow groove furrow bank angle is specially：
Whole groove is cut into small groove using Differential Properties；
It is fitted to obtain ditch wall using the data point in continuous adjacent groove section, and calculates ditch wall and cut flat with micro-
The angle in face；
Angle using the I d median of all angle values as traverse furrow groove furrow bank；
Described tyre surface longitudinal furrow groove furrow bank angle calculation process includes：
All cross-section datas of complete cycle longitudinal furrow are all added to a section；
Extract longitudinal furrow furrow bank data point and fitting a straight line is carried out to the longitudinal furrow furrow bank data of extraction using least square method；
According to the angle of fitting a straight line result and tire top face method arrow and as longitudinal furrow groove furrow bank angle；
The process of described extraction longitudinal furrow furrow bank data includes：
Each data of the main groove along complete cycle scope are extracted in described decorative pattern tables of data；
Complete cycle data are divided into certain number and every part of data are overlapped with processing so as to filter out bounce point；
By the groove data that the Data Integration of all numbers is a section, data point slope is transversely calculated；
Longitudinal furrow furrow bank data point slope is judged whether in setting range, if being then defined as longitudinal furrow furrow bank data, if not
It is non-longitudinal furrow furrow bank data then to determine the data point；
The process of described extraction traverse furrow furrow bank data specifically includes：
Coordinate skin plane is divided into by eight quadrants apart from size according to traverse furrow furrow bank data point to two reference axis；
Judge the data point in eight quadrants, and by the data point in the most quadrant of number of data points project to away from
The nearest reference axis of the quadrant；
The intermediate point inside projection point set is found out, and judges other subpoints to the distance of intermediate point whether in predetermined threshold value
It is interior；
If, it is determined that the point corresponding to the subpoint is traverse furrow furrow bank data point.
Further, as shown in fig. 6, step S6, is specifically included：
The number of each row mesosulcus furrow bank data and the proportion in permutation are calculated successively；
Judge whether the ratio value is more than default proportion threshold value；
If, it is determined that the row are longitudinal furrow decorative pattern borders, and go out main groove number according to longitudinal furrow decorative pattern feature modeling.
Further, as shown in fig. 7, after step S6, in addition to：
S7, calculated according to the deviation at any tire top number of cross-sections strong point and datum mark, obtain tire arbitrary section
Circular runout situation, described datum mark is the intersection point of any circumference face and tire top lines.
As shown in figure 8, the present embodiment discloses a kind of tyre tread key parameter automatic measurement system, including：
Tyre surface 2D decorative patterns parameters measurement module, groove area calculation module, groove volume computing module, groove ditch
Wall angle calculation module, main groove number computing module and tyre surface circular runout analysis module；
Tyre surface 2D decorative patterns parameters measurement module is used to measure tire 2D decorative patterns according to all subclass of tire tread 2D decorative patterns
Characteristic corresponding to graphic element, including tire top face tables of data and groove tables of data；
Groove area calculation module is used to be closed on tire 2D decorative pattern up-and-down boundary lines, utilizes areal calculation function
Calculate groove area；
Groove volume computing module is used to measure the tire entity before cutting and all subclass, and
Measurement result is handled to obtain each groove volume；
Groove furrow bank angle calculation module is used for tire top face tables of data and groove tables of data according to measurement gained,
Tyre surface traverse furrow groove furrow bank angle, longitudinal furrow furrow bank angle are calculated, and extracts longitudinal furrow furrow bank data, traverse furrow furrow bank data；
Main groove number computing module is used to calculate the longitudinal furrow furrow bank data point, and is indulged according in each row
The number of ditch data proportion in permutation, calculate the number of main groove；
Tyre surface circular runout analysis module is used to be carried out according to the deviation at any tire top number of cross-sections strong point and datum mark
Calculate, obtain the circular runout situation of tire arbitrary section, described datum mark is any circumference face and the intersection point of tire top lines.
It is main to be noted that as shown in figure 9, the system carries out secondary open using CATIA softwares as platform, using CAA modes
Hair, which provide substantial amounts of api interface in order to extend systemic-function, connect particular by by RADE modules and API
Mouth is combined to realize the deep level development to CATIA, and wherein RADE modules are integrated in VC++ development environments.Use simultaneously
SQLServer databases are managed to the parameter information of acquisition, as database mode is accessed, then using ADO technologies.
It should be noted that the present invention has the advantages that：
(1) quickly tyre surface 2D decorative patterns can be identified by the present invention, and carry out classification processing according to recognition result, so as to
Distinct methods are used to measure the characteristic corresponding to tire 2D pattern elements for different type set.
(2) present invention to groove border by being filled one by one, then reference area, therefore it can not only be calculated
Go out groove area and Hai Lu ratios can be obtained, and then useful data is provided for noise from tire tread patterns analysis.
(3) present invention can solve the problem that the groove volume meter caused by groove is hollow and traverse furrow is in irregular shape
Difficult problem is calculated, equally there is very strong applicability not only for reverse-engineering and for Top-Down Design, utilizing dough sheet in addition
Due to need not be closed to dough sheet when cutting rotational solid, therefore have higher success rate.
(4) present invention can solve the problem that by cross groove and annular ribs ditch scan the point cloud feature structure come not
With caused furrow bank angle calculation difficulty problem, not only computational efficiency is high but also adapts to the situation that traverse furrow crosses with longitudinal furrow.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (8)
- A kind of 1. tyre tread key parameter method for automatic measurement, it is characterised in that including：S1, the characteristic according to corresponding to all subclass of tire tread 2D decorative patterns measure tire 2D pattern elements；S2, tire 2D decorative pattern up-and-down boundary lines are closed, utilize areal calculation function to calculate groove area；S3, the tire entity before cutting and all subclass are measured, and measurement result is handled to obtain each Groove volume；S4, according to the characteristic, groove area and groove volume, obtain tire top face tables of data and groove number According to table；S5, tire top face tables of data and groove tables of data according to measurement gained, calculating tyre surface traverse furrow groove furrow bank angle, Longitudinal furrow furrow bank angle, and extract longitudinal furrow furrow bank data, traverse furrow furrow bank data；S6, the longitudinal furrow furrow bank data point is calculated, and according to shared by the number of each row mesosulcus data in permutation Ratio, calculate the number of main groove.
- 2. the method as described in claim 1, it is characterised in that described step S1, specifically include：Model root vertex is obtained by obtaining part feature handle；All subclass of tyre surface 2D decorative patterns are obtained using the method for feature traversal；Characteristic corresponding to corresponding measuring method measurement tire 2D pattern elements is used using each subclass.
- 3. the method as described in claim 1, it is characterised in that described step S2, specifically include：Data point corresponding to the acquisition upper and lower border of tire 2D grooves and the upper and lower border of each decorative pattern；It is filled after up-and-down boundary line is closed；Measure the groove area after filling one by one using GetArea () function.
- 4. the method as described in claim 1, it is characterised in that described step S3, specifically include：Obtained using the method for feature based tree traversal without the entity before cutting entity and all dividing body set；All elements volume and arranged in measuring assembly using bubble sort method with order from big to small；Each groove volume is calculated using following iterative formula：<mrow> <msubsup> <mi>V</mi> <mi>G</mi> <mrow> <mo>(</mo> <mi>n</mi> <mo>)</mo> </mrow> </msubsup> <mo>=</mo> <msubsup> <mi>V</mi> <mi>S</mi> <mrow> <mo>(</mo> <mi>n</mi> <mo>-</mo> <mn>1</mn> <mo>)</mo> </mrow> </msubsup> <mo>-</mo> <msubsup> <mi>V</mi> <mi>S</mi> <mrow> <mo>(</mo> <mi>n</mi> <mo>)</mo> </mrow> </msubsup> <mo>,</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>&le;</mo> <mi>n</mi> <mo>&le;</mo> <msub> <mi>N</mi> <mi>G</mi> </msub> <mo>)</mo> </mrow> <mo>,</mo> </mrow>Wherein NGGroove total number is represented,N-th of groove volume is represented,Preceding solid volume is not cut in representative, Represent the cutting body volume remained by using n-th of decorative pattern dough sheet cutting entity procedure.
- 5. the method as described in claim 1, it is characterised in that described step S5, be specially：Calculating tyre surface traverse furrow groove furrow bank angle is specially：Whole groove is cut into small groove using Differential Properties；It is fitted to obtain ditch wall using the data point in continuous adjacent groove section, and calculates ditch wall and tangent plane Angle；Angle using the I d median of all angle values as traverse furrow groove furrow bank；Described tyre surface longitudinal furrow groove furrow bank angle calculation process includes：All cross-section datas of complete cycle longitudinal furrow are all added to a section；Extract longitudinal furrow furrow bank data point and fitting a straight line is carried out to the longitudinal furrow furrow bank data of extraction using least square method；According to the angle of fitting a straight line result and tire top face method arrow and as longitudinal furrow groove furrow bank angle；The process of described extraction longitudinal furrow furrow bank data includes：Each data of the main groove along complete cycle scope are extracted in described decorative pattern tables of data；Complete cycle data are divided into certain number and every part of data are overlapped with processing so as to filter out bounce point；By the groove data that the Data Integration of all numbers is a section, data point slope is transversely calculated；Longitudinal furrow furrow bank data point slope is judged whether in setting range, if being then defined as longitudinal furrow furrow bank data, if otherwise true The fixed data point is non-longitudinal furrow furrow bank data；The process of described extraction traverse furrow furrow bank data specifically includes：Coordinate skin plane is divided into by eight quadrants apart from size according to traverse furrow furrow bank data point to two reference axis；Judge the data point in eight quadrants, and by the data point in the most quadrant of number of data points project to away from this as Limit nearest reference axis；The intermediate point inside projection point set is found out, and judges other subpoints to the distance of intermediate point whether in predetermined threshold value；If, it is determined that the point corresponding to the subpoint is traverse furrow furrow bank data point.
- 6. the method as described in claim 1, it is characterised in that described step S6, specifically include：The number of each row mesosulcus furrow bank data and the proportion in permutation are calculated successively；Judge whether the ratio value is more than default proportion threshold value；If, it is determined that the row are longitudinal furrow decorative pattern borders, and go out main groove number according to longitudinal furrow decorative pattern feature modeling.
- 7. the method as described in claim 1, it is characterised in that after described step S6, in addition to：S7, calculated according to the deviation at any tire top number of cross-sections strong point and datum mark, obtain the footpath of tire arbitrary section To bounce situation, described datum mark is any circumference face and the intersection point of tire top lines.
- A kind of 8. tyre tread key parameter automatic measurement system, it is characterised in that including：Tyre surface 2D decorative pattern parameter measurement moulds Block, groove area calculation module, groove volume computing module, groove furrow bank angle calculation module, main groove number Computing module and tyre surface circular runout analysis module；Tyre surface 2D decorative patterns parameters measurement module is used to measure tire 2D patterns according to all subclass of tire tread 2D decorative patterns Characteristic corresponding to element, including tire top face tables of data and groove tables of data；Groove area calculation module is used to be closed on tire 2D decorative pattern up-and-down boundary lines, is calculated using areal calculation function Groove area；Groove volume computing module is used to measure the tire entity before cutting and all subclass, and to surveying Amount result is handled to obtain each groove volume；Groove furrow bank angle calculation module is used for tire top face tables of data and groove tables of data according to measurement gained, calculates Tyre surface traverse furrow groove furrow bank angle, longitudinal furrow furrow bank angle, and extract longitudinal furrow furrow bank data, traverse furrow furrow bank data；Main groove number computing module is used to calculate the longitudinal furrow furrow bank data point, and according to each row mesosulcus number According to number in permutation proportion, calculate the number of main groove；Tyre surface circular runout analysis module is used to be calculated according to the deviation at any tire top number of cross-sections strong point and datum mark, The circular runout situation of tire arbitrary section is obtained, described datum mark is any circumference face and the intersection point of tire top lines.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107657130A (en) * | 2017-10-18 | 2018-02-02 | 安徽佳通乘用子午线轮胎有限公司 | A kind of reverse modeling method towards tyre tread parameter of structure design |
| CN110348163A (en) * | 2019-07-19 | 2019-10-18 | 合肥工业大学 | A kind of approximating method of the continuous tangent arc in tyre tread boundary |
| CN110610055A (en) * | 2019-09-24 | 2019-12-24 | 中策橡胶集团有限公司 | Method for designing steering stability performance of heavy-duty tire and heavy-duty tire designed by method |
| CN114905895A (en) * | 2022-06-28 | 2022-08-16 | 赛轮集团股份有限公司 | Method for automatically arranging studs in tire tread patterns |
| CN114919343A (en) * | 2022-03-29 | 2022-08-19 | 东风柳州汽车有限公司 | Tire temperature monitoring method and device and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107657130A (en) * | 2017-10-18 | 2018-02-02 | 安徽佳通乘用子午线轮胎有限公司 | A kind of reverse modeling method towards tyre tread parameter of structure design |
| CN110348163A (en) * | 2019-07-19 | 2019-10-18 | 合肥工业大学 | A kind of approximating method of the continuous tangent arc in tyre tread boundary |
| CN110348163B (en) * | 2019-07-19 | 2022-09-13 | 合肥工业大学 | Fitting method for continuous tangent circular arc of tire pattern boundary |
| CN110610055A (en) * | 2019-09-24 | 2019-12-24 | 中策橡胶集团有限公司 | Method for designing steering stability performance of heavy-duty tire and heavy-duty tire designed by method |
| CN114919343A (en) * | 2022-03-29 | 2022-08-19 | 东风柳州汽车有限公司 | Tire temperature monitoring method and device and storage medium |
| CN114919343B (en) * | 2022-03-29 | 2023-07-07 | 东风柳州汽车有限公司 | Tire temperature monitoring method, device and storage medium |
| CN114905895A (en) * | 2022-06-28 | 2022-08-16 | 赛轮集团股份有限公司 | Method for automatically arranging studs in tire tread patterns |
| CN114905895B (en) * | 2022-06-28 | 2023-12-26 | 赛轮集团股份有限公司 | Method for automatically arranging embedded nails in tire tread pattern |
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