Tire taper adjusting and grinding method and device

Abstract

The invention relates to a tire taper adjusting and grinding method and device, relates to the technical field of tire manufacturing, and is characterized in that a linear equation of a tire geometric taper and a tire taper effect is constructed based on tire test data fitting; taking the tire with the unqualified degree not exceeding a given range as a to-be-corrected tire, and grinding and correcting the tire on the other side by taking one side, with the qualified taper effect, of the to-be-corrected tire as a benchmark until the taper effects on the two sides of the tire are judged to be qualified based on a linear equation. And the single side of the tire is not polished, so that the integrity, reference and accuracy are better. And by taking the threshold value A as a boundary, the tires with low unqualified degree are screened for correction grinding, and the situation that the performance of finished tires is affected by excessive tire grinding amount is avoided. The taper effect is calculated based on the tire geometric contour, tire taper correction is carried out according to the taper effect, and the method is suitable for taper correction of various tires.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tire manufacturing technology, in particular to a tire taper adjustment grinding method and device. BACKGROUND

[0002] With the rapid popularization of new energy vehicles, the influence of tire performance on the overall experience of the vehicle is more prominent, and the comfort, wear resistance and handling of the tire become core competitiveness indicators. Tire taper, i.e. the asymmetry of the cross section in the circumferential direction of the tire, is a key parameter affecting the driving stability of the vehicle and the service life of the tire. When the tire taper deviates, it will cause the vehicle to deviate, abnormal wear and vibration, and even threaten the safety of driving. Therefore, in tire production, the taper must be precisely detected and corrected.

[0003] At present, the taper correction technology in the industry mainly relies on manual grinding or semi-automatic equipment. Traditional manual grinding relies on the experience of operators, has the problems of low efficiency and poor consistency, and is easily affected by subjective factors to cause precision fluctuations. And the existing semi-automatic equipment adopts a fixed angle mechanical structure, which has insufficient adaptability to tire specifications and limited universality. SUMMARY

[0004] In view of the deficiencies in the related art, the present application provides a tire taper adjustment grinding method and device, a first order equation of tire geometric taper and tire taper effect is fitted and constructed based on tire test data, and the taper effect is calculated based on the constructed first order equation and the geometric profile of the tire to be corrected. Based on the comparison result of the tolerance interval of the calculated taper effect and the standard taper effect, the tire to be corrected is ground, which is suitable for taper correction of various tires.

[0005] The present application provides a tire taper adjustment grinding method, the steps of which include: S1, for each specification of tire, select a plurality of tires meeting the tolerance interval of the standard taper effect, measure the geometric taper of each tire and measure its taper effect by dynamic rotation test method, and construct the following equation:

[0006] representing the geometric taper, representing the taper effect, k and a are constants; a plurality of sampling points are uniformly arranged along the tire axial direction, the geometric taper of each sampling point is measured and substituted into ; the taper effect of each tire is substituted into ; based on the data of a plurality of tires of the same specification, k and a of each sampling point are fitted and obtained; S2, measure the geometric taper of each sampling point of the tire and substitute it into the equation matched with the tire specification and tire axial position in S1, calculate the Given the tolerance range of the standard taper effect, select all All are greater than the lower limit of the tolerance for the standard taper effect, and All sampling points exceeding the upper limit of the standard taper effect tolerance are located on the same side of the tire centerline, and all Tires whose differences from the upper limit of the tolerance of the standard taper effect are all less than or equal to the given threshold A are considered tires to be corrected. S3. Two sampling points symmetrical about the tire centerline are grouped together; within the same group... The sampling points within the tolerance range of the standard taper effect are used as the reference. The sampling points in the tolerance range that do not meet the standard taper effect are the grinding points. Greater than the benchmark of the same group At that time, the pre-set radial feed amount is used to grind from the grinding point along the tire axis to the adjacent tire shoulder; based on Polish each polishing point in order from largest to smallest; S4, repeat S2-S3, until all tires selected in S2 are used. It is within the tolerance range of the standard taper effect.

[0007] In some of these embodiments, The calculation formula is:

[0008] n represents the distance between two adjacent sampling points along the tire axial direction; n represents the distance from the sampling point to the nearest tire shoulder. Number; The tire diameter at the target point. B is the tire diameter of another sampling point symmetrical about the tire centerline; B is the tire travel surface width.

[0009] In some embodiments, A is 60N; within the tolerance range of the standard taper effect, the difference between the lower and upper limits is less than or equal to 5N.

[0010] In some embodiments, in S3, the polishing point Compared with the benchmark When the difference is less than or equal to 30N, the radial feed is y1; grinding point Compared with the benchmark When the difference is greater than 30N, the radial feed is y2; y1 is less than or equal to y2; y1 is 0.3 to 0.5mm, and y2 is 0.5 to 0.7mm.

[0011] In some embodiments, in S3, grinding is performed from the grinding point to the adjacent tire shoulder in units of axial feed; grinding point Compared with the benchmark When the difference is less than or equal to 30N, the axial feed is x1; grinding point Compared with the benchmark When the difference is greater than 30N, the tire axial feed is x2, x1 is less than or equal to x2; x1 is 1 to 5mm; x2 is 5 to 10mm.

[0012] In some embodiments, the step of obtaining the tire in S1 that satisfies the tolerance range of the standard taper effect is as follows: A1. The tire taper effect is obtained by using a uniformity testing machine and a dynamic rotation test method; tires with a taper effect greater than the upper limit of the standard taper effect and a difference between the two less than or equal to a given threshold A are selected as tires to be corrected. A2. Using the tire centerline as a boundary, grind the side of the tire with the larger outer diameter. A3. Repeat A1-A2 until the tire taper effect obtained by the dynamic rotation test method is within the tolerance range of the standard taper effect.

[0013] The present invention also provides a tire taper adjustment and grinding device, including a processor with a storage medium, a tire grinding unit, and a tire clamping unit, a line laser three-dimensional contour sensor, and a horizontal cross slide electrically connected to the processor; the tire clamping unit has two symmetrically arranged tower-shaped hubs, the two tower-shaped hubs are respectively connected to two rotary drive devices, the two rotary drive devices are respectively mounted on two linear drive devices, and the tire grinding unit is mounted on the horizontal cross slide; the storage medium stores the equation of S1 in the above-mentioned tire taper adjustment and grinding method and the tolerance range of the standard taper effect, as well as a computer program; the processor is used to execute the computer program to realize S2 to S4 in the above-mentioned tire taper adjustment and grinding method.

[0014] In some embodiments, the tire clamping unit has a tire inflation structure electrically connected to the processor, and the tire grinding unit has a grinding head equipped with a pressure sensor.

[0015] In some embodiments, the tire grinding unit is rotatably connected to a horizontal cross slide, and the tire grinding unit can be fixed to the horizontal cross slide, with the rotation axis of the tire grinding unit being vertical.

[0016] In some embodiments, the tire taper adjustment and grinding device also includes a QR code scanning device electrically connected to the processor, wherein a QR code recording the specifications of the tire to be corrected is provided on the sidewall of the tire.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The application is based on tire test data fitting to construct a first equation of tire geometric taper and tire taper effect, based on the first equation to select a tire with single side taper effect unqualified and the unqualified degree not exceeding a given range as a tire to be modified, taking the side of the tire with taper effect qualified as a reference, grinding and modifying the other side of the tire until the two sides of the tire are both qualified based on the first equation. The tire is not ground on one side, and the integrity, referability and accuracy are better. A threshold A is used as a boundary to select a tire with lower unqualified degree for grinding and modification, so as to avoid excessive grinding of the tire affecting the performance of the finished tire. The application is based on tire geometric profile calculation of taper effect, and accordingly modifies the tire taper, which is suitable for taper modification of various tires and has high accuracy.

[0018] 2. The processor determines the grinding modification state based on the scanning result of the line laser three-dimensional profile sensor, without manual reinspection, so as to simplify the process flow.

[0019] 3. The angle of the grinding head in the tire taper adjustment grinding device is adjustable, which can further widen the types of tires that can be modified.

[0020] 4. The processor intelligently calls the matching equation and the tolerance interval of the standard taper effect based on the scanning result of the two-dimensional code, so as to further improve the automation of the tire taper modification. DETAILED DESCRIPTION

[0021] The drawings described herein are used to provide further understanding of the application, and form a part of the application. The illustrative embodiments of the application and their descriptions are used to explain the application, and do not constitute an improper limitation on the application. In the drawings: Figure 1 It is a schematic diagram of the internal structure of the machine box of the tire taper adjustment grinding device in the embodiment of the application; Figure 2 It is a schematic diagram of the tire grinding unit in the embodiment of the application; Figure 3 It is a schematic diagram of the lifting unit in the embodiment of the application; Figure 4 It is a schematic diagram of the tire taper adjustment grinding device in the embodiment of the application.

[0022] In the drawings: 1, tire grinding unit; 11, grinding motor; 12, grinding head; 13, support table; 2, tire clamping unit; 21, tower hub; 22, cabinet; 3, line laser three-dimensional profile sensor; 4, horizontal cross slide; 41, X-axis linear module; 42, Y-axis linear module; 5, dust collector; 6, mounting bracket; 7, lifting unit; 71, electric control lifting driving device; 72, table top; 73, mounting seat; 74, roller shaft; 81, base; 82, machine box; 83, touch screen; 84, control button; 85, audible and visual alarm; 86, transparent safety door; 9, tire to be modified. Detailed Implementation

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Terminology Explanation: "Radial feed" refers to the amount of radial movement of the grinding head in one revolution of the tire. "Axial feed" refers to the amount of axial movement of the grinding head in one revolution of the tire.

[0028] In one illustrative embodiment of a tire taper adjustment and grinding method according to the present invention, the tire taper adjustment and grinding method includes at least: S1. For each tire specification, select multiple tires that meet the tolerance range of the standard taper effect, measure the geometric taper of each tire, and use the dynamic rotation test method to measure its taper effect, constructing the following equation:

[0029] Represents geometric taper, representing the taper effect, k and a are constants; a plurality of sampling points are evenly arranged along the tire axial direction, the geometric taper of each sampling point is measured and substituted into ; the taper effect of each tire is substituted into ; based on the data of a plurality of tires of the same specification, k and a of each sampling point are fitted to obtain; the fitting method of k and a is the prior art.

[0030] S2, the geometric taper of each sampling point of the tire is measured and substituted into the equation matched with the specification of the tire in S1, and the of all sampling points is calculated; given the tolerance interval of the standard taper effect, all greater than the lower limit of the tolerance of the standard taper effect, and greater than the upper limit of the tolerance of the standard taper effect, all sampling points located on the same side of the tire center line, and all the difference between the upper limit of the tolerance of the standard taper effect is less than or equal to the given threshold A are selected as the tire to be corrected; the tolerance interval of the standard taper effect is obtained from the design standard of the tire.

[0031] S3, two sampling points symmetrical to the tire center line are taken as a group; in the same group, the sampling point in the tolerance interval of the standard taper effect is the reference, the sampling point not meeting the tolerance interval of the standard taper effect is the polishing point, and the polishing point greater than the reference in the same group, a preset radial feed amount is polished from the polishing point to the adjacent tire shoulder along the tire axial direction; based on each polishing point is polished in turn from large to small; S4, repeat S2-S3 until all in the tolerance interval of the standard taper effect of the tire selected in S2.

[0032] The measurement step of the tire taper effect in S1 is to measure the lateral force deviation LFD1 when the tire is rotated forward and the lateral force deviation LFD2 when the tire is reversed by using a uniformity tester through a dynamic rotation test method, and half of the sum of LFD1 and LFD2 is the tire taper effect.

[0033] The specification of the tire in S1 has the information of the running surface width, outer diameter, flatness ratio, cross-sectional structure, pattern type, and rim diameter of the tire.

[0034] In S1, the fitting degree of the equation reaches more than 85%, and the equation is constructed based on at least five tire data.

[0035] The tire taper adjustment grinding method is based on tire test data to fit a first order equation of tire geometric taper and tire taper effect, selects a tire with one-side taper effect not qualified and the unqualified degree not exceeding a given range as a tire to be corrected, takes the side with qualified taper effect of the tire to be corrected as a reference, grinds and corrects the other side of the tire, and determines that both sides of the tire have qualified taper effect based on the first order equation. The tire is not ground on one side, and the integrity, referability and accuracy are better. The present application calculates the taper effect based on the tire geometric profile, and corrects the tire taper accordingly, is suitable for taper correction of various tires, and has high accuracy. Meanwhile, the threshold A is used as a boundary to screen the tire with lower unqualified degree for correction and grinding, so that the grinding amount of the tire does not excessively affect the performance of the finished tire.

[0036] Further, the sampling points are symmetrically distributed based on the tire center line, and the geometric tapers of the two sampling points symmetrically distributed about the tire center line in S1 are used to fit k and a of the same equation.

[0037] Further, in S3, the tire rotates around the axis thereof during grinding, and the grinding head grinds the rotating tire.

[0038] Further, the specifications of the tire in S1 further have load index, speed rating, function identification and the like.

[0039] In some embodiments, the obtaining step of the tire satisfying the tolerance interval of the standard taper effect in S1 is: A1, obtaining the tire taper effect by a dynamic rotation test method through a uniformity tester; selecting a tire with a tire taper effect greater than an upper limit of a tolerance of a standard taper effect and a difference therebetween less than or equal to a given threshold A as a tire to be corrected; A2, grinding the side with a larger outer diameter of the tire based on the tire center line; A3, repeating A1-A2 until the tire taper effect obtained by the dynamic rotation test method is in the tolerance interval of the standard taper effect.

[0040] In some embodiments, the geometric tapers of S1 and S2 are calculated by the following formula:

[0041] is the distance between the two adjacent sampling points in the axial direction of the tire; n represents the number of sampling points between the adjacent tire shoulder; is the tire diameter of the target point, and the tire diameter of the other sampling point symmetrically distributed about the tire center line; B is the tire running surface width.

[0042] ​​In some embodiments, A is 60N; within the tolerance range of the standard taper effect, the difference between the lower and upper limits is less than or equal to 5N.

[0043] In some embodiments, in S3, the polishing point Compared with the benchmark When the difference is less than or equal to 30N, the radial feed is y1; grinding point Compared with the benchmark When the difference is greater than 30N, the radial feed is y2; y1 is less than or equal to y2; y1 is 0.3 to 0.5mm, and y2 is 0.5 to 0.7mm, taking into account both grinding efficiency and grinding accuracy.

[0044] In some embodiments, in S3, grinding is performed from the grinding point to the adjacent tire shoulder in units of axial feed; grinding point Compared with the benchmark When the difference is less than or equal to 30N, the axial feed is x1; grinding point Compared with the benchmark When the difference is greater than 30N, the tire axial feed is x2, and x1 is less than or equal to x2; x1 is 1 to 5mm; x2 is 5 to 10mm, taking into account both grinding efficiency and grinding accuracy.

[0045] Furthermore, the axial feed rate is less than or equal to .

[0046] like Figures 1-4 As shown, the present invention also provides a tire taper adjustment and grinding device, including a processor with a storage medium, a tire grinding unit 1, and a tire clamping unit 2, a line laser three-dimensional contour sensor 3, and a horizontal cross slide 4 electrically connected to the processor; the tire clamping unit 2 has two symmetrically arranged tower-shaped hubs 21, the two tower-shaped hubs 21 are respectively connected to two horizontal and collinear rotary drive devices, the two rotary drive devices are respectively mounted on two linear drive devices, the output directions of the two linear drive devices are horizontal and parallel, and both the rotary drive devices and the linear drive devices are electrically connected to the processor. The tire grinding unit 1 is mounted on the horizontal cross slide 4; the storage medium stores the equation of S1 in the above-mentioned tire taper adjustment and grinding method and the tolerance range of the standard taper effect, as well as a computer program; the processor is used to execute the computer program to drive the tire clamping unit 2, the line laser three-dimensional contour sensor 3, and the horizontal cross slide 4 to move, realizing S2 to S4 in the above-mentioned tire taper adjustment and grinding method.

[0047] When using the aforementioned tire taper adjustment and grinding device, the processor first controls two linear drive devices to move two tower-shaped wheel hubs 21 towards each other to clamp the tire 9 to be corrected. At this time, the axis of the tire 9 to be corrected is horizontal. Subsequently, the processor starts the rotary drive device to rotate the tire 9 to be corrected. At this time, the processor starts the linear laser three-dimensional contour sensor 3 to scan the contour of the tire 9 to be corrected. Based on the data collected by the linear laser three-dimensional contour sensor 3 and step S2 in the tire taper adjustment and grinding method, the processor calculates each sampling point. The processor is based on the tolerance range of the standard taper effect and the calculated... In step S3 of the tire taper adjustment and grinding method, the two rotary drive devices are activated to rotate the tire, and the horizontal position of the tire grinding unit 1 is adjusted by the horizontal cross slide 4 to grind and correct the tire taper. After grinding is completed, the processor repeats steps S2 to S4 until all sampling points are reached. The tolerance range that satisfies the standard taper effect.

[0048] The aforementioned tire taper adjustment and grinding device can automatically correct tire taper, is suitable for taper correction of various tires, and has high accuracy. The line laser three-dimensional profile sensor 3 used can measure the three-dimensional profile of the tire in a non-contact manner, avoiding the problems caused by manual measurement of the tire profile 9 to be corrected. To reduce tire taper correction error, the tire profile is sampled once per revolution to calculate the updated geometric taper of each sampling point. This updated taper is then substituted into the equation to obtain the taper effect of each sampling point after grinding, thereby reducing profile error.

[0049] Furthermore, the tire clamping unit 2 also includes a cabinet 22, in which both the rotary drive and the linear drive are installed.

[0050] Furthermore, the line laser 3D profile sensor 3 measures the tire's 3D profile based on laser triangulation. The line laser 3D profile sensor 3 has a laser emitter and a camera. The laser emitter emits a laser beam onto the surface of the tire being measured. The contour undulations of the tire surface cause the laser beam to deform. After the camera captures this deformed laser beam, the line laser 3D profile sensor 3 calculates the 3D coordinates of each point on the tire surface based on the geometric triangulation relationship between the laser emitter, the camera, and the tire surface. With the line laser 3D profile sensor 3 fixed in position and the tire rotating, the continuously acquired profiles can be synthesized into complete 3D point cloud data of the tire.

[0051] In some embodiments, the tire grinding unit 1 includes a grinding motor 11 and a grinding head 12 connected to the output end of the grinding motor 11. The grinding motor 11 is used to drive the grinding head 12 to rotate, so as to improve the grinding efficiency.

[0052] Furthermore, the grinding head 12 is a laser grinding head.

[0053] Furthermore, the tire grinding unit 1 also includes a support platform 13 that carries the grinding motor 11 and the grinding head 12, and the support platform 13 is mounted on the horizontal cross slide 4.

[0054] Furthermore, the horizontal cross slide 4 includes a horizontally arranged X-axis linear module 41 and a horizontally arranged Y-axis linear module 42 perpendicular to the X-axis linear module 41. The Y-axis linear module 42 and the X-axis linear module 41 have the same structure, both consisting of a drive motor, a lead screw, a bracket, and a slide. The two ends of the lead screw are rotatably connected to the bracket. The slide is threadedly engaged with the lead screw and slides along the length of the lead screw on the bracket. The output shaft of the drive motor is connected to the lead screw, and the drive motor is electrically connected to the processor.

[0055] Furthermore, the bracket of the X-axis linear module 41 is fixed in position, the bracket of the Y-axis linear module 42 is connected to the slide of the X-axis linear module 41, and the slide of the Y-axis linear module 42 is connected to the support platform 13.

[0056] In some embodiments, the tire clamping unit 2 has a tire inflation structure electrically connected to the processor, and the grinding head 12 of the tire grinding unit 1 is equipped with a pressure sensor. Before performing S2 to S4, the tire is inflated using the tire inflation structure. During S2 to S4, the processor adjusts the amount of air inflated by the tire inflation structure based on the detection results of the pressure sensor to ensure that the pressure between the grinding head 12 and the tire remains constant during grinding, thereby improving the grinding effect.

[0057] In some embodiments, the tire grinding unit 1 is rotatably connected to the horizontal cross slide 4. The tire grinding unit 1 can be fixed to the horizontal cross slide 4. The rotation axis of the tire grinding unit 1 is vertical, so as to adjust the angle between the grinding head 12 and the tire tread and improve the grinding effect.

[0058] Furthermore, the tire grinding unit 1 also includes a rotary motor mounted on the support platform 13 and electrically connected to the processor. The output end of the rotary motor is connected to the grinding motor 11 to drive the grinding motor 11 to rotate around the vertical axis.

[0059] In some embodiments, the tire taper adjustment and grinding device further includes a mounting bracket 6 fixedly connected to the body of the grinding motor 11, and a line laser three-dimensional profile sensor 3 is detachably connected to the mounting bracket 6. When the processor controls the rotary motor to start, the line laser three-dimensional profile sensor 3 rotates together with the grinding head 12 around the vertical axis, changing the detection angle of the line laser three-dimensional profile sensor 3.

[0060] In some embodiments, the tire taper adjustment and grinding apparatus further includes a QR code scanning device electrically connected to the processor. A QR code recording its specifications is provided on the sidewall of the tire 9 to be corrected. The processor scans the QR code on the tire using the QR code scanning device to obtain the tire specifications, and then calls the equation in S1 that matches the specifications and the tolerance range of the standard taper effect based on the computer program in the storage medium.

[0061] Furthermore, the QR code on the tire is set during the first S2 test. The sampling point for the tolerance range that does not meet the standard taper effect is located on the tire sidewall, so as to identify the side of the tire that needs to be corrected and avoid accidental grinding.

[0062] In some embodiments, the tire taper adjustment and polishing device also includes a vacuum cleaner electrically connected to the processor to suck up debris generated during tire polishing, thereby reducing environmental pollution caused by tire polishing.

[0063] In some embodiments, the tire taper adjustment and grinding device further includes a lifting unit 7 located below the two-tower type wheel hub 21, the top surface of which is used to support the tire.

[0064] Furthermore, the lifting unit 7 includes an electrically controlled lifting drive device 71, a platform 72, two mounting seats 73 mounted on the platform 72, and two rollers 74 rotatably connected to the two mounting seats 73 respectively. The axes of the two rollers 74 are parallel to the axis of the tower-shaped hub 21. The output end of the electrically controlled lifting drive device 71 is connected to the platform 72, and the electrically controlled lifting drive device 71 is electrically connected to the processor. The electrically controlled lifting drive device 71 is mounted on the base 81.

[0065] Furthermore, the electrically controlled lifting drive device 71 is an electrically controlled hydraulic cylinder.

[0066] In some embodiments, the tire taper adjustment and grinding device also includes a base 81. The horizontal cross slide 4, the tire clamping unit 2, and the lifting unit 7 are all mounted on the base 81.

[0067] In some embodiments, the tire taper adjustment and grinding device also includes a housing 82 mounted on the base 81. The processor, tire grinding unit 1, tire clamping unit 2, line laser three-dimensional contour sensor 3, horizontal cross slide 4, vacuum cleaner, and lifting unit 7 are all located inside the housing 82 to limit the area of ​​debris splashing during tire grinding and prevent personnel from being accidentally injured by debris. The housing 82 is provided with an openable and closable transparent safety door 86 so that the user can observe the tire grinding process during grinding.

[0068] In some embodiments, the tire taper adjustment and grinding device also includes a touch screen 83 electrically connected to the processor. The touch screen 83 is mounted on the outside of the chassis 82 so that the user can view the program running in the processor and adjust the parameters in the computer program through the touch screen 83.

[0069] Furthermore, a control button 84 electrically connected to the processor is provided on the outside of the chassis 82.

[0070] In some embodiments, the tire taper adjustment and grinding device also includes an audible and visual alarm 85 electrically connected to the processor.

[0071] Through the description of several embodiments of the tire taper adjustment and grinding method and apparatus of the present invention, it can be seen that the embodiments of the tire taper adjustment and grinding method and apparatus of the present invention have at least the following advantages: 1. This invention constructs a linear equation relating tire geometric taper and tire taper effect based on tire test data. Tires with unilateral taper effect defects within a given range are selected as tires to be corrected. Using the side of the tire with a satisfactory taper effect as a benchmark, the other side is ground to correct the taper effect until both sides are deemed satisfactory based on the linear equation. This method, where only one side of the tire is left unground, ensures better completeness, reference value, and accuracy. A threshold A is used to select tires with lower defect rates for correction and grinding, avoiding excessive grinding that could negatively impact the final tire performance. This invention calculates the taper effect based on the tire's geometric profile and corrects the taper accordingly, making it applicable to various tire types with high accuracy.

[0072] 2. The processor determines the grinding and correction status based on the scanning results of the line laser 3D contour sensor, eliminating the need for manual re-inspection and simplifying the process.

[0073] 3. The angle of the grinding head in the tire taper adjustment grinding device is adjustable, which can further expand the types of tires that can be corrected.

[0074] 4. The processor intelligently calls the corresponding equations and the tolerance range of the standard taper effect based on the QR code scanning results, further improving the automation of tire taper correction.

[0075] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0076] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A method for adjusting and grinding the taper of a tire, characterized in that, Includes the following steps: S1. For each tire specification, select multiple [User1] tires that meet the tolerance range of the standard taper effect, measure the geometric taper of each tire, and use the dynamic rotation test method to measure its taper effect, constructing the following equation: Represents geometric taper, Representing the taper effect, k and a are constants; multiple sampling points are uniformly set along the tire axis, the geometric taper of each sampling point is measured and substituted into... ; Substituting the taper effect of each tire into Based on data from multiple tires of the same specification, [User2]k and a are obtained for each sampling point through fitting. S2. Measure the geometric taper of each sampling point on the tire and substitute it into the equation for tire specifications and tire axial position matching in S1 to calculate the values ​​of all sampling points. Given the tolerance range of the standard taper effect, select all All are greater than the lower limit of the tolerance for the standard taper effect, and All sampling points exceeding the upper limit of the standard taper effect tolerance are located on the same side of the tire centerline, and all Tires whose differences from the upper limit of the tolerance of the standard taper effect are all less than or equal to the given threshold A are considered tires to be corrected. S3. Two sampling points symmetrical about the tire centerline are grouped together; within the same group... The sampling points within the tolerance range of the standard taper effect are used as the reference. The sampling points in the tolerance range that do not meet the standard taper effect are the grinding points. Greater than the benchmark of the same group At that time, the pre-set radial feed amount is used to grind from the grinding point along the tire axis to the adjacent tire shoulder; based on Polish each polishing point sequentially from largest to smallest; S4, repeat S2-S3, until all tires selected in S2 are used. It is within the tolerance range of the standard taper effect.

2. The tire taper adjustment and grinding method according to claim 1, characterized in that, The calculation formula is: n represents the distance between two adjacent sampling points along the tire axial direction; n represents the distance from the sampling point to the nearest tire shoulder. Number; The tire diameter at the target point. B is the tire diameter of another sampling point symmetrical about the tire centerline; B is the tire travel surface width.

3. The tire taper adjustment and grinding method according to claim 2, characterized in that, A is 60N; within the tolerance range of the standard taper effect, the difference between the lower and upper limits is less than or equal to 5N.

4. The tire taper adjustment and grinding method according to claim 3, characterized in that, In S3, the polishing point Compared with the benchmark When the difference is less than or equal to 30N, the radial feed is y1; grinding point Compared with the benchmark When the difference is greater than 30N, the radial feed is y2; y1 is less than or equal to y2; y1 is 0.3 to 0.5mm, and y2 is 0.5 to 0.7mm.

5. The tire taper adjustment and grinding method according to claim 4, characterized in that, In S3, grinding is performed from the grinding point to the adjacent tire shoulder in units of axial feed; grinding point Compared with the benchmark When the difference is less than or equal to 30N, the axial feed is x1; grinding point Compared with the benchmark When the difference is greater than 30N, the tire axial feed is x2, x1 is less than or equal to x2; x1 is 1 to 5mm; x2 is 5 to 10mm.

6. A tire taper adjustment and grinding method according to any one of claims 1-5, characterized in that, The steps to obtain the tire that satisfies the standard taper effect tolerance range in S1 are as follows: A1. The tire taper effect is obtained by using a uniformity testing machine and a dynamic rotation test method; tires with a taper effect greater than the upper limit of the standard taper effect and a difference between the two less than or equal to a given threshold A are selected as tires to be corrected. A2. Using the tire centerline as a boundary, grind the side of the tire with the larger outer diameter. A3. Repeat A1-A2 until the tire taper effect obtained by the dynamic rotation test method is within the tolerance range of the standard taper effect.

7. A tire taper adjustment and grinding device, characterized in that, The device includes a processor with a storage medium, a tire grinding unit, and a tire clamping unit, a line laser three-dimensional contour sensor, and a horizontal cross slide electrically connected to the processor. The tire clamping unit has two symmetrically arranged tower-shaped hubs, each connected to a rotary drive device, which is mounted on a linear drive device. The tire grinding unit is mounted on the horizontal cross slide. The storage medium stores the equation of S1 in the tire taper adjustment and grinding method according to any one of claims 1-6, the tolerance range of the standard taper effect, and a computer program. The processor executes the computer program to implement S2 to S4 in the tire taper adjustment and grinding method according to any one of claims 1-6.

8. The tire taper adjustment and grinding device according to claim 7, characterized in that, The tire clamping unit has a tire inflation structure electrically connected to the processor, and the tire grinding unit has a grinding head equipped with a pressure sensor.

9. A tire taper adjustment and grinding device according to claim 7, characterized in that, The tire grinding unit is rotatably connected to a horizontal cross slide, and the tire grinding unit can be fixed to the horizontal cross slide. The rotation axis of the tire grinding unit is vertical.

10. A tire taper adjustment and grinding device according to claim 7, characterized in that, It also includes a QR code scanning device electrically connected to the processor, and a QR code recording the specifications is set on the sidewall of the tire to be corrected.

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