CN109871632B

CN109871632B - Method, device, system and equipment for automatically generating tread pattern pitch

Info

Publication number: CN109871632B
Application number: CN201910156392.3A
Authority: CN
Inventors: 黄炽强; 龙娟; 杨晓光
Original assignee: Wanli Tire Corp ltd
Current assignee: Wanli Tire Corp ltd
Priority date: 2019-03-01
Filing date: 2019-03-01
Publication date: 2023-06-16
Anticipated expiration: 2039-03-01
Also published as: CN109871632A

Abstract

The embodiment of the application discloses a method, a device, a system and equipment for automatically generating tread pattern pitch, wherein the method comprises the following steps: s1: acquiring pitch widths of a plurality of pitches and the arrangement sequence of the pitches; s2: establishing a parameterized pitch model according to the incidence relation between the pitch and the patterns; s3: generating a combined model of all unrepeated pitches and patterns according to the parameterized pitch model; s4: and assembling and outputting the corresponding combined model according to the arrangement sequence of the pitches. The method disclosed by the application realizes automatic generation of tread pattern pitches, can rapidly assemble given pattern pitch arrangement sequences, and solves the technical problems of high labor cost and time cost caused by manual calculation and manual assembly.

Description

Method, device, system and equipment for automatically generating tread pattern pitch

Technical Field

The application relates to the technical field of tread patterns, in particular to a method, a device, a system and equipment for automatically generating tread pattern pitches.

Background

The tread pattern pitch refers to two adjacent blocks (grooves/groove blocks) of the same shape and the same/different width on one side/both sides of the tire measured on the tread along the tread center line, and is called tread pattern pitch.

The tread pattern of the tire is a regular pattern formed by combining single or multiple pattern pitches with different widths in a whole circumference ordering way according to a certain arrangement sequence. In the tire three-dimensional modeling process, a lot of time is often spent in assembling the tread pitches in order due to the complexity of the tread patterns. As the complexity of the pattern increases, the shape of the pattern changes correspondingly in different pattern ordering sequences for the same pattern pitch. Thus, the pattern ordering is often changed, the three-dimensional model needs to be modified greatly, and the assembly ordering is performed again, so that great workload is caused for design engineers to optimize the pattern pitch ordering sequence. With the increase of the complexity of the pattern, it often takes several times the time of the engineer to update the pitch of the pattern and assemble the pattern according to the pattern sequence.

In the prior art, the whole-cycle sequencing can be only performed according to the pattern pitch classification condition with independent pitches, and no good solution exists for complex pattern pitch types related to front and back pitches, and manual calculation and manual assembly are mainly used. With the increase of the complexity of the patterns, the same pattern pitch, and the shapes of the patterns in different pattern ordering sequences are correspondingly changed, so that great workload is caused to design engineers in optimizing the pattern pitch ordering sequences. With the increase of the complexity of the pattern, it often takes several times the design time of the pattern design to update the pitch of the pattern and assemble the pattern according to the sequence of the pattern sequence.

Disclosure of Invention

The embodiment of the application provides a method, a device, a system and equipment for automatically generating tread pattern pitches, which solve the technical problems of high labor cost and time cost caused by manual calculation and manual assembly.

In view of the foregoing, a first aspect of the present application provides a tread pattern pitch automatic generation method, the method comprising:

s1: acquiring pitch widths of a plurality of pitches and the arrangement sequence of the pitches;

s2: establishing a parameterized pitch model according to the incidence relation between the pitch and the patterns;

s3: generating a combined model of all unrepeated pitches and patterns according to the parameterized pitch model;

s4: and assembling and outputting the corresponding combined model according to the arrangement sequence of the pitches.

Optionally, step S1 is preceded by:

the arrangement sequence of the pitches is automatically generated according to the circumference of the tire and the widths of the plurality of pitches.

Optionally, after step S1, the method further includes:

judging whether the total length of the pitches arranged according to the arrangement sequence meets the circumference requirement of the tire, and if not, returning to the step S1.

Optionally, step S2 specifically includes:

classifying the pitches according to the association relation between the pitches and the patterns;

establishing a parameterized pitch model according to the classification result;

wherein, the classification is specifically divided into 4 types, respectively: independent pattern pitch, front-to-back associated pattern pitch, combined pattern pitch, and combined and front-to-back associated pattern pitch.

A second aspect of the present application provides an automatic tread pattern pitch generating device, the device comprising:

an acquisition unit for acquiring pitch widths of a plurality of pitches and an arrangement order of the pitches;

the building unit is used for building a parameterized pitch model according to the incidence relation between the pitch and the patterns;

the combination unit is used for generating a combination model of all non-repeated pitches and patterns according to the parameterized pitch model;

and the output unit is used for assembling and outputting the corresponding combined model according to the arrangement sequence of the pitches.

Optionally, the method further comprises:

and the ordering generating unit is used for automatically generating the ordering sequence of the pitches according to the input circumference of the tire and the widths of the plurality of pitches.

Optionally, the method further comprises:

and the judging unit is used for judging whether the total length of the pitches arranged according to the arrangement sequence meets the circumference requirement of the tire, and if not, the judging unit returns to the acquiring unit.

Optionally, the establishing unit specifically includes:

the pitch classification unit is used for classifying the pitches according to the association relation between the pitches and the patterns;

the model building unit is used for building a parameterized pitch model according to the classification result;

A third aspect of the present application provides a tread pattern pitch automatic generation system, comprising: an input device, a driving device, and the tread pattern pitch automatic generation device according to the second aspect;

the input device is connected with the tread pattern pitch automatic generation device and is used for inputting the circumference, pitch width, pitch ordering or pattern information of the tire;

the driving device is connected with the tread pattern pitch automatic generation device and is used for driving three-dimensional software to visually display the assembled tread patterns.

A fourth aspect of the present application provides an apparatus for automatically generating tread pattern pitch, the apparatus comprising a processor and a memory:

the memory is used for storing program codes and transmitting the program codes to the processor;

the processor is configured to execute the steps of the tread pattern pitch automatic generation method according to the first aspect described above according to instructions in the program code.

From the above technical solutions, the embodiments of the present application have the following advantages:

in the embodiment of the application, a tread pattern pitch automatic generation method is provided, firstly, a pitch width of a plurality of pitches and a pitch arrangement sequence are obtained; then, according to the association relation between the pitch and the pattern, a parameterized pitch model is established; then generating a combined model of all unrepeated pitches and patterns according to the parameterized pitch model; and finally, according to the arrangement sequence of the pitches, the corresponding combined models are assembled and output, so that the automatic generation of the tread pattern pitches is realized, even if the tread pattern pitches which are output unsatisfactorily are not output, the arrangement sequence can be input again, and as all the non-repeated combined models of the pitches and the patterns are generated in advance, the assembly can be performed quickly according to the new arrangement sequence, and the technical problems of high labor cost and time cost caused by manual calculation and manual assembly are solved.

Drawings

FIG. 1 is a method flow chart of a tread pattern pitch automatic generation method in a first embodiment of the present application;

FIG. 2 is a method flow chart of a tread pattern pitch automatic generation method in a second embodiment of the present application;

FIG. 3 is a schematic illustration of an individual pattern pitch in an embodiment of the present application;

FIG. 4 is a schematic illustration of a pitch of a pattern associated back and forth in an embodiment of the present application;

FIG. 5 is a schematic illustration of combined and front-to-back correlated pattern pitches in an embodiment of the present application;

fig. 6 is a schematic structural view of an automatic tread pattern pitch generating device in the embodiment of the present application.

Detailed Description

In order to make the present application solution better understood by those skilled in the art, the following description will clearly and completely describe the technical solution in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The application designs an automatic generation method for tread pattern pitch, which considers that in the prior art, the assembly of tread pitch patterns is completed by manpower, when the patterns corresponding to each pitch on the tread are the same, the sequence of the pitch is changed, the patterns in each pitch cannot be changed, and the manual assembly is simpler. However, when a pattern corresponding to a certain pitch on the tread spans a plurality of pitches, that is, when the order of the pitches is changed, the pattern also needs to be changed, and the difficulty of reassembling at this time is equivalent to that of redesigning the pattern, which requires a lot of time and effort.

For easy understanding, referring to fig. 1, fig. 1 is a flowchart of a method for automatically generating tread pattern pitch according to the first embodiment of the present application, as shown in fig. 1, specifically:

s1: and acquiring the pitch widths of a plurality of pitches and the arrangement sequence of the pitches.

It will be appreciated that in order to achieve better noise reduction, the tread pitch of a tire is typically not equally wide, and therefore there are multiple widths of pitch that need to be obtained one by one. In addition, to automatically generate the tread pattern, it is necessary to acquire the arrangement order of a plurality of pitches.

S2: and establishing a parameterized pitch model according to the association relation between the pitch and the patterns.

It should be noted that there are various relationships between the pitch and the pattern, and a certain pattern may exist only in one pitch (as shown in fig. 3) or may span multiple pitches (as shown in fig. 4 or fig. 5), so that when the parameterized pitch model is built, the relationship between the pitch and the pattern needs to be determined.

S3: and generating a combined model of all non-repeated pitches and patterns according to the parameterized pitch model.

For example, a pattern spans the current pitch N and the next pitch N+1, requiring the generation of a combined model of all N and N+1. For example: there are 3 widths of pitches a, B, C. The next pitch of pitch a may be any of A, B, C, then "a pattern spans the current pitch N and the next pitch n+1" as described above, and then all non-repeating combination models are generated of AA, AB, AC.

And (3) assembling the combined model according to the arrangement sequence according to the pitch arrangement sequence obtained in the step (S1). It will be appreciated that, as all non-repeating combination models are constructed, the combination models are assembled according to the order of arrangement to form an overall tread pattern pitch.

According to the tread pattern pitch automatic generation method provided by the embodiment of the application, firstly, the pitch widths of a plurality of pitches and the arrangement sequence of the pitches are obtained; then, according to the association relation between the pitch and the pattern, a parameterized pitch model is established; then generating a combined model of all unrepeated pitches and patterns according to the parameterized pitch model; and finally, according to the arrangement sequence of the pitches, the corresponding combined models are assembled and output, so that the automatic generation of the tread pattern pitches is realized, even if the tread pattern pitches which are output unsatisfactorily are not output, the arrangement sequence can be input again, and as all the non-repeated combined models of the pitches and the patterns are generated in advance, the assembly can be performed quickly according to the new arrangement sequence, and the technical problems of high labor cost and time cost caused by manual calculation and manual assembly are solved.

Further, the first embodiment described above may be optimized. Since the arrangement order obtained in step S1 may be user-defined input, or may be automatically generated by the system or an original template, it may be understood that if the arrangement order is user-defined input, the tread circumference assembled by the arrangement order may not be equal to the required tire tread circumference, and therefore, after step S1, step S11 may further include: judging whether the total length of the pitches arranged according to the arrangement sequence meets the circumference requirement of the tire, and if not, returning to the step S1. The function of this step is to determine whether the arrangement order of the pitches is reasonable.

Referring to fig. 2, fig. 2 is a flowchart of a method for automatically generating tread pattern pitch according to a second embodiment of the present application, specifically:

step 201, automatically generating the arrangement sequence of the pitches according to the circumference of the tire and the widths of the plurality of pitches.

It will be appreciated that the arrangement of the pitches may be either user-defined or may be automatically generated based on the circumference of the tire and the entered widths of the plurality of pitches as set by the user. For example: a certain tire circumference is L, 3 pitch widths are defined, namely an A pitch, a B pitch and a C pitch;

width of a pitch: w1;

width of B pitch: w2;

width of C pitch: w3;

by calculation, the tire circumference L is just equal to the total width of 5 a pitches, 4B pitches, 3C pitches, and a total of 12 pattern pitches, so that the arrangement order that can be automatically generated is AABCACBABACB. The rule for setting the pattern pitch arrangement sequence can be set according to the requirements of noise, energy, friction coefficient and the like.

Step 202, obtaining pitch widths of a plurality of pitches and arrangement sequence of the pitches.

The pitch width and the arrangement order obtained here are the pitch width input by the user in step 201 and the automatically generated pitch arrangement order. In addition, since the arrangement sequence in the embodiment is automatically generated, there is no case that the arrangement sequence of the pitch does not meet the requirement of the circumference of the tire, but the arrangement sequence still does not possibly meet the design concept of the user, so that the step can be expanded, for example: if the order does not meet the requirement, the process returns to step 201 to retrieve.

Step 203, classifying the pitches according to the association relation between the pitches and the patterns.

In the embodiment of the present application, the pitch is divided into 4 types, which are respectively: independent pattern pitch, front-to-back associated pattern pitch, combined pattern pitch, and combined and front-to-back associated pattern pitch.

Independent pattern pitch (as in fig. 3): the patterns in the pitch are only related to the current pitch, the shape and the size of the pitch are not related to the shape and the size of the pitch, the pitch can be independently segmented through pitch separation lines or grooves, and adjacent different pitches can be spliced and sequenced in a seamless mode. For example:

a pitch width: w1

B pitch width: w2

C pitch width: w3

By calculation, the tire circumference is exactly equal to the total width of 5 a pitches, 4B pitches, 3C pitches, for a total of 12 pitches. Assume that the proposed pitch ordering is: the AABCABBACB has 3 pitches in one tire pattern, and the 3 pitches are independent, so long as the number of the 3 pitches of the A pitch, the B pitch and the C pitch in the tire sequence is not changed, the above sequence can be arbitrarily adjusted, for example, the following positions are changed: BAAACCBABACB can generate a new tire pattern by adjusting the position order of a few pitches.

Pitch of the pattern associated in tandem (as in fig. 4): the shape of the pattern (groove/groove block) in the current pitch N is affected by the shape of the preceding (following) pitch or pitches, and in the ordering, the preceding-following pitch relationship of the current pitch needs to be considered. Also referring to the above-described ordering AABCACBABACB, as a pattern shape in pitch N, is determined by the size of the n+1 pitch. The current pitch is a, n+1 pitch there are 3 possibilities: A. b or C, then there are 3 possibilities for the shape of the A pitch, namely A (A), A (B) and A (C).

Pitch of combined pattern: in the case of the pattern sequence of AABCACBABACB, as described above, if two adjacent pitches form a group of grooves/blocks, there are AA, BC, AC, BA, CB,5 combinations, where BA combinations occur twice.

Pattern pitch combined and associated front-to-back: (fig. 5), referring to a certain groove/groove block in the current pitch, spans n pitches (n > =2), the first groove and the second groove in fig. 5 are different in shape and drawing method, span 2 pitch controls, and the pattern shape of the combined pitch formed by AB is also influenced by the latter pitch C.

And 204, establishing a parameterized pitch model according to the classification result.

It will be appreciated that each category has its characteristics, and if the pattern of the current pitch is associated with the pitch before and after, a parameterized pitch model needs to be built according to the association of the pitch before and after.

Step 205, generating a combined model of all non-repeated pitches and patterns according to the parameterized pitch model.

Taking this pattern ordering as an example:

if the pitch is the independent pattern pitch, respectively establishing pitch models of pitch A, B, C;

if the pitch is the pitch of the patterns associated in the front and back, and the pattern of the current pitch is associated with the pitch only, 7 models (because B (B) and C (C) are not present in the sequence) need to be established, namely A (A), A (B), A (C), B (A), B (C), C (A) and C (B). If the a-pitch shape is determined by a number of pitch sizes, the likelihood of such a-pitch will be very high, with many combinations. If: the pitch a is affected by the previous pitch and the next pitch, so that the order of the pitch a may be C (3, 1) =9 combinations, and as the number of associated pitches (e.g. 4 pitches, 5 pitches, etc.) increases, the combination of pitch shapes increases;

if the pitch is a combined pattern pitch, and two adjacent pitches form a group of grooves/groove blocks, AA, BC, AC, BA, CB and 5 models are shared;

if the pitches are combined and the pitches are associated in front and back, two adjacent pitches form a group, namely, the first group is AA pitch. It is assumed that AA pitch is also affected by the pitch pattern, so that in modeling the pattern pitch, the multiple pitches spanned are modeled, i.e., 6 models of (B) AA (B), (a) BC (a), (C) AC (B), (C) BA (B), (a) BA (C), and (a) CB (a) are created. And to the more complex case: where N-1, N-2 may also affect the AA pitch shape, then at most C (3, 1) =81 ordering cases exist. As the number of combined pitches & the number of associated pitches (e.g., 4 pitches, 5 pitches, etc.) increases, then the number of pitch shapes combined will increase.

Further describing a pattern sequence as a case, 3 pitches a B C with unequal widths, the pattern sequence is: the method comprises the steps of acquiring an advancing pitch association relation and a pattern pitch type of a pattern from a pattern pitch parameterization model by CABACACBAAABACABCBABABABACCBACBBA, and calculating different repeated pattern results according to different pattern pitch types:

1. the independent pattern pitch is calculated as follows: total pitch 36, wherein: the number of pitches A is 14, the number of pitches B is 12, the number of pitches C is 10, the number of non-repeated pitches is 3, and the pitches A, the pitches B and the pitches C are respectively;

2. the front-back associated pattern pitch is calculated according to the condition that the current pitch (n) is associated with the back pitch (n+1) because of various conditions of the front-back association relationship, and the calculation result is as follows: total pitch 36, wherein: the pitch A is 14, the pitch B is 12, the pitch C is 10, the non-repeated pitch is 9, and the non-repeated pitches are respectively: a total of 9 cases (brackets indicate association but no pitch combination) of C (A), A (B), B (C), C (B), A (C), A (A), B (B), B (A), C (C);

3. the combined pattern pitch is calculated according to the condition that the current pitch (n), the rear pitch (n+1) and the front pitch (n-1) form the combined pitch, and the calculated result is as follows: total pitch 36, wherein: the number of the pitches A is 14, the number of the pitches B is 12, the number of the pitches C is 10, the non-repeated pitches are respectively CAB, CAC, ACB, ABA, AAB, ACA, BCB, ACC, BAC, BBA, and the number and the combination of the non-repeated pitches can be changed according to different combinations of the pitches;

4. the pattern pitch which is related to the crossing pitch and the front-back pitch is calculated by combining the current pitch (n) and the back pitch (n+1) and simultaneously the condition which is related to the (n-1), (n+2) pitch, and the calculation result is as follows: total pitch 36, wherein: the pitch A is 14, the pitch B is 12, the pitch C is 10, the non-repeated pitch is 14, and the non-repeated pitches are respectively: (A) CA (B), (A) BC (A), (C) AC (A), (C) AC (B), (C) BA (B), (A) BA (A), (A) AA (B), (A) BA (C), (A) BC (B), (A) BA (B), (C) BA (C), (A) CC (B), (A) CB (B), (B) BA (C), the number and combination of unrepeated pitches will vary with different combinations of pitches (brackets indicate that there is an association, but no combination of pitches).

And 206, assembling and outputting the corresponding combined model according to the arrangement sequence of the pitches.

And assembling the built combined model according to the arrangement sequence of the pitches, so that the pitch of the patterns of the assembled table top can be obtained, and the pitches can be conveniently output to three-dimensional visualization software for viewing.

According to the embodiment of the application, the pitch is classified through the relation between the pitch and the patterns, a non-repeated pitch combination model is generated, and finally the combination model is assembled and output, so that the patterns can be expanded according to the widths of different pitches, the mutual association relation identification between the front pitch and the rear pitch is realized, the manual design and the manual assembly are replaced, and the time cost and the labor cost are reduced.

A second aspect of the present application provides an apparatus for automatically generating tread pattern pitch, referring to fig. 6, including:

an obtaining unit 601, configured to obtain pitch widths of a plurality of pitches and an arrangement order of the pitches;

a building unit 602, configured to build a parameterized pitch model according to an association relationship between a pitch and a pattern;

a combination unit 603, configured to generate a combination model of all non-repeating pitches and patterns according to the parameterized pitch model;

and an output unit 604 for assembling and outputting the corresponding combined model according to the arrangement order of the pitches.

Further, the method further comprises the following steps: the ranking generation unit 600 is configured to automatically generate a ranking order of the pitches according to the inputted circumference of the tire and the widths of the plurality of pitches.

Further, the method further comprises the following steps: a judging unit 605 for judging whether the total length of the pitches arranged according to the arrangement order satisfies the circumferential length requirement of the tire, and if not, returning to the acquiring unit 601.

The establishing unit 602 specifically includes:

a pitch classification unit 6021 for classifying the pitch according to the association relationship between the pitch and the pattern;

a model building unit 6022 for building a parameterized pitch model according to the classification result;

A third aspect of the present application provides a tread pattern pitch automatic generation system, comprising an input device, a driving device, and a tread pattern pitch automatic generation device as described in the second aspect;

the driving device is connected with the tread pattern pitch automatic generation device and is used for driving three-dimensional software to visually display the assembled tread pattern.

The three-dimensional software is commercially available three-dimensional design software.

the processor is configured to execute the tread pattern pitch automatic generation method according to the embodiment of the first aspect according to an instruction in the program code.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.

The terms "first," "second," "third," "fourth," and the like in the description of the present application and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be capable of operation in sequences other than those illustrated or described herein, for example. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that in this application, "at least one" means one or more, and "a plurality" means two or more. "and/or" for describing the association relationship of the association object, the representation may have three relationships, for example, "a and/or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: u disk, mobile hard disk, read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. An automatic tread pattern pitch generation method, comprising:

s2: according to the association relation between pitch and pattern, a parameterized pitch model is established, specifically:

wherein, the classification is specifically divided into 4 types, respectively: independent pattern pitch, front-back associated pattern pitch, combined pattern pitch, and combined front-back associated pattern pitch;

2. The tread pattern pitch automatic generation method according to claim 1, characterized by further comprising, before step S1:

3. The tread pattern pitch automatic generation method according to claim 1, characterized by further comprising, after step S1:

4. An automatic tread pattern pitch generating device, comprising:

the building unit is used for building a parameterized pitch model according to the association relation between the pitch and the pattern, and specifically comprises the following steps:

the model building unit is used for building a parameterized pitch model according to the classification;

the classifications are specifically divided into 4 types, respectively: independent pattern pitch, front-back associated pattern pitch, combined pattern pitch, and combined front-back associated pattern pitch;

5. The tread pattern pitch automatic generation device according to claim 4, further comprising:

6. The tread pattern pitch automatic generation device according to claim 4, further comprising:

7. An automatic tread pattern pitch generation system, comprising: input means, driving means and tread pattern pitch automatic generation means as claimed in any one of claims 4 to 6;

8. An apparatus for automatically generating tread pattern pitch, the apparatus comprising a processor and a memory:

the processor is configured to execute the tread pattern pitch automatic generation method according to any one of claims 1 to 3 according to instructions in the program code.