CN110207894B - Calibration method of tire balance system - Google Patents
Calibration method of tire balance system Download PDFInfo
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- CN110207894B CN110207894B CN201910401171.8A CN201910401171A CN110207894B CN 110207894 B CN110207894 B CN 110207894B CN 201910401171 A CN201910401171 A CN 201910401171A CN 110207894 B CN110207894 B CN 110207894B
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012360 testing method Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000001131 transforming effect Effects 0.000 abstract 1
- 238000012937 correction Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/14—Determining imbalance
- G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
- G01M1/28—Determining imbalance by oscillating or rotating the body to be tested with special adaptations for determining imbalance of the body in situ, e.g. of vehicle wheels
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Abstract
The invention discloses a calibration method of a tire balance system, which comprises the following steps: acquiring vector data AO of a first pressure sensor and vector data BO of a second pressure sensor in the state when the main shaft idles; arranging a tire on the main shaft, and acquiring the distance between the tire and the measuring scale, namely distA, the width wid of the tire, the radius R of the tire and the distance between the first pressure sensor and the second pressure sensor, namely distB; the main rotating shaft obtains vector data A1 and B1; loading a balance block with mass m1 on the inner side surface of the tire, and rotating the main shaft to obtain vector data A2 and B2; transforming the positions of the balance weights to obtain vector data A3 and B3; recording third position data Delta acquired by the grating disc; and finally, obtaining calibration parameters K1, K2, K3, K4 and K5 by calculation according to the data. The calibration method of the tire balance system provided by the invention eliminates the unbalance amount of the measuring shaft, enables the measurement to be accurate, reduces the process requirements on mechanical production, and is beneficial to large-scale production.
Description
Technical Field
The invention relates to the technical field of tire balance detection, in particular to a calibration method of a tire balance system.
Background
A tire balancing machine is a device for measuring whether a tire is balanced in a high-speed rotation state. The linear type main shaft tyre balancing machine is composed of a motor, a main shaft with a flange, a machine box, a signal sensor, a grating disc, a control and calculation module and the like. An operator fixes a tire to be balanced on a main shaft flange, a motor drives a main shaft to rotate, a signal sensor collects an unbalance signal and sends the unbalance signal to a control and calculation module for calculation, and finally the unbalance quality and the phase of the tire are obtained.
Before the tire balancing machine is used, a measurement system needs to be calibrated, calibration refers to solving of a calibration parameter by using a known unbalance amount, and actual unbalance amount testing refers to solving of the unbalance amount by using the known calibration parameter. The tire unbalance amount of the tire balancing machine is measured in the calibration process, the width of a hub is generally set as the distance between two correction surfaces, and the radius of the hub is the correction radius of the correction surface. The amount of tire imbalance can be equated to the amount of imbalance at the calibration radius at the distance from the axis on the calibration plane. The method is realized for the system calibration method of the tire balancing machine, and the condition that unbalance exists in the main shaft per se is not considered, so that errors are brought to system calibration, and the measurement result is influenced.
Disclosure of Invention
The invention aims to provide a calibration method of a tire balance system, which eliminates the unbalance of a measuring shaft and improves the measuring precision.
The invention discloses a calibration method of a tire balance system, which adopts the technical scheme that:
a calibration method of a tire balancing system is suitable for a tire balancing machine and comprises the following steps: (1) acquiring vector data AO of a first pressure sensor and vector data BO of a second pressure sensor in the state when the main shaft idles, and subtracting the vector data AO and B0 to eliminate the unbalance of the main shaft during actual unbalance testing; fixing a tire on a main shaft flange, obtaining the distance between the tire and a measuring scale, namely distA, the width wid of the tire, the radius R of the tire and the distance between a first pressure sensor and a second pressure sensor, namely distB, rotating the main shaft, and obtaining vector data A1 of the first pressure sensor and vector data B1 of the second pressure sensor in the state; loading a balance weight with mass m1 on the inner side surface of the tire, rotating the main shaft, and acquiring vector data A2 of the first pressure sensor and vector data B2 of the second pressure sensor in the rotating state; rotating the tire to wait for the balance block to reach a first position of the inner side surface, taking out the balance block at the inner side surface, placing the balance block at a second position on the outer side surface of the tire far away from the case, and rotating the main shaft to obtain vector data A3 of the first pressure sensor and vector data B3 of the second pressure sensor in the state, wherein a connecting line of the first position and the second position is vertical to the inner side surface and the outer side surface; when the balance block reaches a third position of the outer side surface, recording data Delta acquired by the spindle grating disc at the moment; (2) calculating a coefficient of influence ratio K1 of the first pressure sensor and the second pressure sensor from A1, B1, A2 and B2, and calculating a phase difference K2 of the first pressure sensor and the second pressure sensor from A2 and B2; calculating an influence coefficient K3 of the distance between the inner side arm and the outer side arm relative to the first pressure sensor and a distance K4 between the measuring scale and the first pressure sensor according to parameters A1, B1, A2, B2, distB and wid; (3) determining an influence coefficient K5 of the first pressure sensor according to parameters K1, K2, A1, B1, A2, B2 and R, m 1;
preferably, in step 1, the first pressure sensor and the second pressure sensor are disposed below the main shaft.
Preferably, in step 1, the balance weight is disposed at any position close to the inner side surface of the chassis.
Preferably, the second position and the third position are both located on a straight line passing through the center of rotation of the tire.
Preferably, the first position is located in a 12-point direction on the inner side surface of the tire, the second position is located in a 12-point direction on the outer side surface of the tire, and the third position is located in a 6-point direction on the outer side surface of the tire.
The calibration method of the tire balance system disclosed by the invention has the beneficial effects that: the method for obtaining vector data A0 and B0 when the main shaft idles and correcting the phase ends eliminates the unbalance amount of the measuring shaft, so that the measurement becomes accurate, simultaneously reduces the process requirements on mechanical production and is beneficial to large-scale production.
Drawings
FIG. 1 is a schematic diagram of the tire balancing system of the present invention.
Detailed Description
The invention will be further elucidated and described with reference to the embodiments and drawings of the specification:
referring to fig. 1, a method for calibrating a tire balancing system, which is suitable for a tire balancing machine, includes the following steps:
(1) the first pressure sensor 11 and the second pressure sensor 12 are arranged below the main shaft 10, a screw rod is installed, a motor is started, vector data AO of the first pressure sensor 11 and vector data BO of the second pressure sensor 12 in the state are obtained when the main shaft 10 idles, and the vector data AO and B0 need to be subtracted firstly in an actual unbalance amount test to eliminate the unbalance amount of the main shaft.
One tire 20 is fixed on a flange of the spindle 10, the distance distA between the tire 20 and the measuring scale 30, the width wid of the tire 20, the radius R of the tire 20 and the distance distB between the first pressure sensor 11 and the second pressure sensor 12 are obtained, the diameter and the width of the tire 20 are input into the system, the spindle 10 is rotated, the vector data a1 of the first pressure sensor 11 and the vector data B1 of the second pressure sensor 12 in the state are obtained, and the measuring scale 30 is arranged close to the cabinet.
A balance weight having a mass m1 is loaded on any position of the inner side surface 21 of the tire 20 near the measuring scale 30, and the vector data A2 of the first pressure sensor 11 and the vector data B2 of the second pressure sensor 12 in this state are acquired by rotating the spindle 10.
When the tire 20 is rotated until the weight reaches the 12 point position, the weight at the inner side 21 is taken out and placed at the 12 point position on the outer side 22 of the tire 20 away from the measuring scale 30, and the vector data a3 of the first pressure sensor 11 and the vector data B3 of the second pressure sensor 12 in this state are acquired by rotating the spindle 10.
When the balance block reaches the position of 6 points, recording the data Delta acquired by the grating disk of the main shaft 10 at the moment.
(2) Calculating a coefficient of influence ratio K1 of the first pressure sensor 11 and the second pressure sensor 12 from A1, B1, A2 and B2, and calculating a phase difference K2 between the first pressure sensor 11 and the second pressure sensor 12 from A2 and B2; the influence coefficient K3 of the inner and outer side moment arms relative to the first pressure sensor 11 and the distance K4 between the measuring scale and the first pressure sensor are calculated by the parameters A1, A2, B1, B2, distB and wid.
(3) The influence coefficient K5 of the first pressure sensor 11 is determined from the parameters K1, K2, a1, B1, a2, B2, and R, m 1.
Wherein, the 12 o 'clock direction is the highest point of the balance weight rotation, and the 6 o' clock direction is the lowest point of the balance weight rotation. The tire 20 is selected for a medium gauge size, with a specific tire 20 having a width of 5.5 inches and a diameter of 14 inches.
The calibration method of the tire balance system disclosed by the invention has the advantages that the vector data A0 and B0 are obtained when the main shaft 10 idles, and the phase correction method is finished, so that the unbalance amount of the measuring shaft is eliminated, the measurement becomes accurate, the process requirement on mechanical production is reduced, and the large-scale production is facilitated.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. A calibration method of a tire balancing system is suitable for a tire balancing machine and is characterized by comprising the following steps:
(1) acquiring vector data AO of a first pressure sensor and vector data BO of a second pressure sensor in the state when the main shaft idles, and subtracting the vector data AO and B0 to eliminate the unbalance of the main shaft during actual unbalance testing;
fixing a tire on a main shaft flange, obtaining the distance between the tire and a measuring scale, namely distA, the width wid of the tire, the radius R of the tire and the distance between a first pressure sensor and a second pressure sensor, namely distB, rotating the main shaft, and obtaining vector data A1 of the first pressure sensor and vector data B1 of the second pressure sensor in the state;
loading a balance weight with mass m1 on the inner side surface of the tire, rotating the main shaft, and acquiring vector data A2 of the first pressure sensor and vector data B2 of the second pressure sensor in the rotating state;
rotating the tire to wait for the balance block to reach a first position of the inner side surface, taking out the balance block at the inner side surface, placing the balance block at a second position on the outer side surface of the tire far away from the case, and rotating the main shaft to obtain vector data A3 of the first pressure sensor and vector data B3 of the second pressure sensor in the state, wherein a connecting line of the first position and the second position is vertical to the inner side surface and the outer side surface;
when the balance block reaches a third position of the outer side surface, recording data Delta acquired by the spindle grating disc at the moment;
(2) calculating a coefficient of influence ratio K1 of the first pressure sensor and the second pressure sensor from A1, B1, A2 and B2, and calculating a phase difference K2 of the first pressure sensor and the second pressure sensor from A2 and B2;
calculating an influence coefficient K3 of the distance between the inner side arm and the outer side arm relative to the first pressure sensor and a distance K4 between the measuring scale and the first pressure sensor according to parameters A1, B1, A2, B2, distB and wid;
(3) and determining an influence coefficient K5 of the first pressure sensor from parameters K1, K2, A1, B1, A2, B2 and R, m 1.
2. A method for calibrating a tire balancing system according to claim 1, wherein in step 1, the first pressure sensor and the second pressure sensor are disposed below the spindle.
3. A method for calibrating a tire balancing system as set forth in claim 1, wherein in step 1, the weight is disposed at any position near the inner side of the housing.
4. A method of calibrating a tire balancing system according to any one of claims 1 to 3, wherein the second position and the third position are both located on a straight line passing through the center of rotation of the tire.
5. The method of calibrating a tire balancing system according to claim 4, wherein the first position is located at 12 points on the inner side of the tire, the second position is located at 12 points on the outer side of the tire, and the third position is located at 6 points on the outer side of the tire.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910401171.8A CN110207894B (en) | 2019-05-15 | 2019-05-15 | Calibration method of tire balance system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910401171.8A CN110207894B (en) | 2019-05-15 | 2019-05-15 | Calibration method of tire balance system |
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| CN110207894A CN110207894A (en) | 2019-09-06 |
| CN110207894B true CN110207894B (en) | 2021-12-28 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1374510A (en) * | 2001-03-08 | 2002-10-16 | 国际计测器株式会社 | Equipment and method for measuring tyre uniformity and/or dynamic balance |
| CN101196427A (en) * | 2006-12-08 | 2008-06-11 | 张芝泉 | Method for calibrating and measuring unbalance amount of tire |
| CN101532900A (en) * | 2009-04-03 | 2009-09-16 | 浙江大学 | Vertical type wheel hub dynamic balancing machine |
| CN102072797A (en) * | 2010-12-20 | 2011-05-25 | 深圳市元征软件开发有限公司 | Method for measuring unbalance of spindle in measurement of dynamic balance of tire and tire balancing machine |
| CN102156025A (en) * | 2010-12-17 | 2011-08-17 | 深圳市元征软件开发有限公司 | System calibration method of tire balancing machine |
| CN106338361A (en) * | 2016-09-20 | 2017-01-18 | 北京工业大学 | Tyre dynamic balance measurement method based on influence coefficient |
| CN208026430U (en) * | 2018-03-20 | 2018-10-30 | 深圳市羱羊科技有限公司 | A kind of tire dynamic and balance owner axle assembly |
| CN109642845A (en) * | 2016-08-24 | 2019-04-16 | 三菱重工机械***株式会社 | Wheel balance measurement device, the evaluation method of wheel balance measurement device, the bearing calibration of wheel balance measurement device, wheel balance measurement device correction program |
-
2019
- 2019-05-15 CN CN201910401171.8A patent/CN110207894B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1374510A (en) * | 2001-03-08 | 2002-10-16 | 国际计测器株式会社 | Equipment and method for measuring tyre uniformity and/or dynamic balance |
| CN101196427A (en) * | 2006-12-08 | 2008-06-11 | 张芝泉 | Method for calibrating and measuring unbalance amount of tire |
| CN101532900A (en) * | 2009-04-03 | 2009-09-16 | 浙江大学 | Vertical type wheel hub dynamic balancing machine |
| CN102156025A (en) * | 2010-12-17 | 2011-08-17 | 深圳市元征软件开发有限公司 | System calibration method of tire balancing machine |
| CN102072797A (en) * | 2010-12-20 | 2011-05-25 | 深圳市元征软件开发有限公司 | Method for measuring unbalance of spindle in measurement of dynamic balance of tire and tire balancing machine |
| CN109642845A (en) * | 2016-08-24 | 2019-04-16 | 三菱重工机械***株式会社 | Wheel balance measurement device, the evaluation method of wheel balance measurement device, the bearing calibration of wheel balance measurement device, wheel balance measurement device correction program |
| CN106338361A (en) * | 2016-09-20 | 2017-01-18 | 北京工业大学 | Tyre dynamic balance measurement method based on influence coefficient |
| CN208026430U (en) * | 2018-03-20 | 2018-10-30 | 深圳市羱羊科技有限公司 | A kind of tire dynamic and balance owner axle assembly |
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