KR100812270B1 - Overall circumference measuring apparatus of tire - Google Patents

Overall circumference measuring apparatus of tire Download PDF

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Publication number
KR100812270B1
KR100812270B1 KR1020060123022A KR20060123022A KR100812270B1 KR 100812270 B1 KR100812270 B1 KR 100812270B1 KR 1020060123022 A KR1020060123022 A KR 1020060123022A KR 20060123022 A KR20060123022 A KR 20060123022A KR 100812270 B1 KR100812270 B1 KR 100812270B1
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South Korea
Prior art keywords
tire
laser displacement
displacement sensor
spindle
measuring
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KR1020060123022A
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Korean (ko)
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차혁상
이기성
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한국타이어 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C25/00—Apparatus or tools adapted for mounting, removing or inspecting tyres
    • B60C25/002—Inspecting tyres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L17/00—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies
    • G01L17/005—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies using a sensor contacting the exterior surface, e.g. for measuring deformation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/02—Tyres
    • G01M17/027—Tyres using light, e.g. infrared, ultraviolet or holographic techniques

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

An overall circumference measuring apparatus for a tire is provided to shorten inspection cycle by automatically obtaining reliable data on the circumference of the tire. An overall circumference measuring apparatus for a tire includes a spindle(3), a laser displacement sensor(4), a laser displacement sensor position controller(5), an encoder(6), an infrared temperature sensor(7), a controller(8), and a communication module(9). The spindle provides the tire with an air pressure and rotates the tire. The laser displacement sensor measures the radius of the rotating tire. The laser displacement sensor position controller controls the position of the laser displacement sensor. The encoder is attached to the spindle, measures the rotation amount of the tire, and samples measured laser displacement. The infrared temperature sensor measures the temperature of the tire. The controller performs low-frequency filtering on the measured laser displacement and calculates the overall circumference of the tire. The communication module receives tire size and temperature data and registers the measured values.

Description

타이어의 원주길이 측정장치{Overall circumference measuring apparatus of tire}Overall circumference measuring apparatus of tire

도 1은 본 발명에 따른 타이어의 원주길이 측정장치를 나타낸 전체 구성도,1 is an overall configuration diagram showing a circumferential length measuring device of a tire according to the present invention,

도 2는 본 발명에 의하여 타이어의 전체 원주길이를 측정하는 방식을 설명하기 위한 도면이다.2 is a view for explaining a method of measuring the total circumferential length of a tire according to the present invention.

-도면의 주요부분에 대한 부호의 설명-Explanation of symbols on the main parts of the drawing

1 : 하중휠, 2 : 타이어,1: load wheel, 2: tire,

3 : 스핀들, 4 ; 레이더 변위센서,3: spindle, 4; Radar displacement sensor,

5 : 레이저 변위센서 위치 제어부, 6 : 엔코더,5: laser displacement sensor position control, 6: encoder,

7 : 적외선 온도센서, 8 : 제어기,7: infrared temperature sensor, 8: controller,

9 : 통신모듈.9: Communication module.

본 발명은 완성타이어의 원주길이를 측정하는 장치에 관한 것으로, 더욱 상세하게는 타이어 공기압 증감에 따른 타이어의 반경변화와 온도변화에 따른 변화 및 하중/무하중시의 변화 등을 부여하여 타이어의 원주길이를 측정할 수 있는 타이 어의 원주길이 측정장치에 관한 것이다.The present invention relates to a device for measuring the circumferential length of the finished tire, and more particularly, the tire circumferential length by giving a change in the radius of the tire and a change in temperature and a change in load / no load due to the increase or decrease of tire pressure It relates to a circumferential length measuring device of a tire capable of measuring.

일반적으로 차량이 주행할 때, 차량의 좌우 타이어의 크기가 다르면 차량이 특정방향으로 쏠리는 현상을 풀링(Pulling)이라 하는데, 이는 차량의 좌우 타이어의 한 회전당 주행길이 차이가 차량의 풀링을 발생하는 요인중의 하나이다.In general, when the size of the left and right tires of the vehicle is different when the vehicle is running, pulling the vehicle in a specific direction is called pulling (pulling). It is one of the factors.

타이어 제조사 내지는 완성차 업체에서는 완성 타이어의 원주방향 둘레길이를 관리하여 보다 안정성 있는 타이어를 제조하는데 필요한 기초 데이터로 활용하고 있는바, 종래 타이어의 원주길이 측정은 측정자가 줄자와 같은 수작업으로 측정하는 방식을 주로 사용하였기 때문에 측정 데이터의 신뢰성과 측정 사이클 타임에 문제점이 있었다.Tire manufacturers or automakers use the basic data needed to manufacture more stable tires by managing the circumferential length of finished tires. Because it was mainly used, there were problems in reliability of measurement data and measurement cycle time.

한편, 종래에도 레이저 변위센서를 이용하여 타이어의 크기를 감지하는 장치가 대한민국 공개특허 제2005-43018호로 제안되었지만, 이 특허는 타이어의 센터링을 위해서 타이어의 크기를 감지하는 장치임을 알 수 있기에 차량 풀링현상이 직접적인 요인을 제공하는 타이어의 원주길이를 정확하게 측정하지 못하였다.Meanwhile, although a device for detecting a tire size using a laser displacement sensor has been proposed in the Republic of Korea Patent Laid-Open Publication No. 2005-43018, since the patent is a device for detecting a tire size for centering the tire, the vehicle is pulled. The circumferential length of the tire, which is a direct factor, was not accurately measured.

이에 본 발명은 상기와 같은 종래 문제점을 해결하기 위해 발명된 것으로, 타이어의 온도와 압력 및 하중부가 여부 등을 고려하여 타이어의 전체 원주길이를 정확하게 측정하여 타이어의 성능향상에 도움을 주는 기초 데이터로 활용할 수 있는 타이어의 원주길이 측정장치를 제공함에 그 목적이 있다.Therefore, the present invention was invented to solve the conventional problems as described above, and the basic data to help improve the performance of the tire by accurately measuring the overall circumferential length of the tire in consideration of the temperature, pressure and load of the tire. Its purpose is to provide a circumferential length measuring device of a tire that can be utilized.

상기와 같은 목적을 달성하기 위한 본 발명은 하중휠에 접촉하여 회전하는 타이어의 원주둘레 길이를 측정하는 장치에 있어서, 상기 타이어가 장착되고 이 타 이어에 공압을 제공하면서 회전시키는 스핀들과, 이 회전 타이어의 반경을 측정하는 레이저 변위센서, 이 레이저 변위센서의 위치를 제어하는 레이저 변위센서 위치 제어부, 타이어의 회전량 측정과 레이저 변위 측정값을 샘플링하는 스핀들에 부착된 엔코더, 상기 타이어의 온도를 측정하는 적외선 온도센서, 타이어의 회전량에 따른 레이저 변위 측정값을 저역 필터링하고 타이어의 전체 원주둘레 계산식을 수행하는 제어기 및, 타이어의 규격과 온도 결정인자 데이터를 인가받고 측정값 실적을 등록하는 통신모듈로 이루어져 있다.The present invention for achieving the above object is a device for measuring the circumferential circumference length of the tire that rotates in contact with the load wheel, the tire is mounted and the spindle for rotating while providing air pressure to the tire, and this rotation Laser displacement sensor for measuring the radius of the tire, laser displacement sensor position control unit for controlling the position of the laser displacement sensor, encoder attached to the spindle to measure the amount of rotation of the tire and the laser displacement measurement value, the temperature of the tire Infrared temperature sensor, low-pass filter for laser displacement measurement according to tire rotation and controller for calculating tire circumference, and communication module for receiving tire specification and temperature determinant data Consists of

이하, 본 발명의 바람직한 실시예를 첨부도면을 참고하여 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 타이어 원주길이 측정장치 전체를 나타낸 구성도이다.1 is a block diagram showing the entire tire circumferential length measuring apparatus according to the present invention.

본 발명은 하중휠(1)에 접촉하여 회전하는 타이어(2)이 원주둘레 길이를 측정하는 장치에 있어서, 상기 타이어(2)가 장착되고 이 타이어(2)의 공압을 제공하면서 회전시키는 스핀들(3)과, 이 회전 타이어(2)의 반경을 측정하는 레이저 변위센서(4), 이 레이저 변위(4) 센서의 위치를 제어하는 레이저 변위센서 위치 제어부(5), 타이어의 회전량 측정과 레이저 변위 측정값을 샘플링하는 스핀들(3)에 부착된 엔코더(6), 상기 타이어의 온도를 측정하는 적외선 온도센서(7), 타이어의 회전량에 따른 레이저 변위 측정값을 저역 필터링하고 타이어의 전체 원주둘레 계산식을 수행하는 제어기(8) 및, 타이어의 규격과 온도측정 인자 데이터를 인가받고 측정값 실적을 등록하는 통신모듈(9)로 이루어져 있다.The present invention relates to a device in which a tire (2) rotating in contact with a load wheel (1) measures the length of a circumference, wherein the tire (2) is mounted and rotates while providing air pressure of the tire ( 3) a laser displacement sensor 4 for measuring the radius of the rotary tire 2, a laser displacement sensor position control unit 5 for controlling the position of the laser displacement 4 sensor, a tire rotation amount measurement and a laser The encoder 6 attached to the spindle 3 for sampling the displacement measurement value, the infrared temperature sensor 7 for measuring the temperature of the tire, and the low-pass filtering of the laser displacement measurement value according to the rotation amount of the tire, and the entire circumference of the tire The controller 8 performs a circumference calculation formula, and a communication module 9 that receives the tire specification and the temperature measurement factor data and registers the measured value performance.

본 발명에서는 하중휠(1)을 이용하여 타이어(2)에 하중을 가하거나 가하지 않도록 되어 있는바, 즉 하중휠(1)을 타이어(2)에 접촉시키어 하중을 가하는 상태와 타이어(2)에 하중휠(1)을 이격시키어 하중을 가하지 않는 상태에서 타이어(2)의 원주둘레 길이를 측정할 수 있으며, 이외의 다른 측정조건은 스핀들(3)을 통하여 타이어(2)의 공기압을 변화시킬 수 있으며, 타이어(2)의 온도변화를 통하여 적외선 온도센서(7)가 이 온도를 측정할 수 있도록 되어 있다.In the present invention, the load wheel 1 is used to apply or not apply a load to the tire 2, that is, the load wheel 1 is in contact with the tire 2 to apply a load and to the tire 2. The length of the circumference of the tire 2 can be measured without the load by separating the load wheel 1, and other measurement conditions can change the air pressure of the tire 2 through the spindle 3. In addition, the infrared temperature sensor 7 can measure this temperature through the temperature change of the tire 2.

이어 본 발명을 통하여 타이어의 전체 원주둘레를 측정하는 방식은 다음과 같다.Next, the method of measuring the entire circumference of the tire through the present invention is as follows.

도 2에 도시된 바와 같이, a는 레이저 변위센서(4)의 변위를 표시하는데, 이 레이저 변위센서(4)는 일정범위를 가지므로 타이어(2)와 적당한 거리에서 레이저 변위센서 위치 제어부(5)에 의하여 제어된다.As shown in Fig. 2, a denotes a displacement of the laser displacement sensor 4, which has a certain range so that the laser displacement sensor position control unit 5 at a proper distance from the tire 2 is shown. Is controlled by

그리고 b는 레이저 변위센서(4)의 측정값으로, 이는 레이저 변위센서(4)와 타이어(2) 표면과의 거리를 측정하여 평균을 구할 수 있는바, 예를 들어 1024펄스 엔코더(6)에 의하여 타이어(2)의 3회전시 3072회 샘플링을 할 수 있다.And b is a measurement value of the laser displacement sensor 4, which can be obtained by measuring the distance between the laser displacement sensor 4 and the surface of the tire (2), for example, 1024 pulse encoder (6) As a result, it is possible to sample 3072 times in three revolutions of the tire 2.

c는 본 발명에 의하여 계측하고자 하는 타이어(2)의 반지름이고, d는 스핀들(3)과 레이저 변위센서 위치 제어부(5) 까지의 고정값이다.c is the radius of the tire 2 to be measured by the present invention, d is a fixed value to the spindle 3 and the laser displacement sensor position control unit 5.

여기서 타이어의 반경(c) = d - a - b,Where the radius of the tire (c) = d-a-b,

따라서 최종 구하고자 하는 타이어(2)의 전체 원주 둘레길이 (Tire OC) = c × 2π이다.Therefore, the total circumferential length (Tire OC) = c x 2π of the tire 2 to be finally obtained.

이와 같은 식 계산은 제어기(8)에서 이루어지고, 얻어진 데이터는 통신모 듈(9)을 통하여 등록되어 활용할 수 있다.Such equation calculation is made in the controller 8, and the obtained data can be registered and utilized through the communication module 9.

또한 본 발명은 상술한 측정방식을 여러 번 측정하되, 타이어 규격과 온도, 공압조건 및 하중 유무 등에 따라 정교하고 정돈관리가 용이하게 이루어질 수 있다.In addition, the present invention is measured several times the above-described measurement method, it can be made in a sophisticated and orderly management according to the tire specifications and temperature, pneumatic conditions and the presence or absence of load.

상기와 같은 본 발명은 생산 타이어의 전체 원주길이 측정을 자동화로 정돈관리가 용이할 뿐만 아니라, 신뢰성 있는 데이터를 취득하면서 검사 사이클 타임도 단축시키는 효과를 지닌다.As described above, the present invention not only makes it easy to manage the entire circumferential length of the production tire by automation, but also has the effect of shortening the inspection cycle time while acquiring reliable data.

Claims (1)

하중휠(1)에 접촉하여 회전하는 타이어(2)이 원주둘레 길이를 측정하는 장치에 있어서, In the device in which the tire 2 rotating in contact with the load wheel 1 measures the circumferential length, 상기 타이어(2)가 장착되고 이 타이어(2)의 공압을 제공하면서 회전시키는 스핀들(3)과, 이 회전 타이어(2)의 반경을 측정하는 레이저 변위센서(4), 이 레이저 변위(4) 센서의 위치를 제어하는 레이저 변위센서 위치 제어부(5), 타이어의 회전량 측정과 레이저 변위 측정값을 샘플링하는 스핀들(3)에 부착된 엔코더(6), 상기 타이어의 온도를 측정하는 적외선 온도센서(7), 타이어의 회전량에 따른 레이저 변위 측정값을 저역 필터링하고 타이어의 전체 원주둘레 계산식을 수행하는 제어기(8) 및, 타이어의 규격과 온도측정 인자 데이터를 인가받고 측정값 실적을 등록하는 통신모듈(9)로 이루어진 것을 특징으로 하는 타이어의 원주길이 측정장치.Spindle 3 on which the tire 2 is mounted and rotates while providing the pneumatic pressure of the tire 2, a laser displacement sensor 4 for measuring the radius of the rotary tire 2, and the laser displacement 4 A laser displacement sensor position control unit 5 for controlling the position of the sensor, an encoder 6 attached to the spindle 3 for measuring the tire rotation amount and the laser displacement measurement value, and an infrared temperature sensor for measuring the temperature of the tire. (7), the controller (8) for low-pass filtering the laser displacement measurement value according to the rotation amount of the tire and calculates the total circumference of the tire, and receives the specification and temperature measurement factor data of the tire and registers the measurement value performance Circumferential length measuring device for a tire, characterized in that consisting of a communication module (9).
KR1020060123022A 2006-12-06 2006-12-06 Overall circumference measuring apparatus of tire KR100812270B1 (en)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
KR101883255B1 (en) 2016-11-17 2018-07-30 넥센타이어 주식회사 A device for measuring a green tire circumference
CN108955534A (en) * 2018-05-15 2018-12-07 天津工业大学 A kind of spool intelligent measurement and evaluation method
KR102243290B1 (en) * 2019-12-27 2021-04-22 넥센타이어 주식회사 A test device for tire
KR20220055274A (en) 2020-10-26 2022-05-03 금호타이어 주식회사 Manufacturing apparatus of tire

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JP2001056215A (en) 1999-08-18 2001-02-27 Sumitomo Rubber Ind Ltd Wear amount measuring device for tire and method therefor
KR20030013905A (en) * 2001-08-10 2003-02-15 금호산업 주식회사 Measuring Device of the Length on circumfer ence at the tire

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KR101883255B1 (en) 2016-11-17 2018-07-30 넥센타이어 주식회사 A device for measuring a green tire circumference
CN108955534A (en) * 2018-05-15 2018-12-07 天津工业大学 A kind of spool intelligent measurement and evaluation method
CN108955534B (en) * 2018-05-15 2020-02-07 天津工业大学 Intelligent detection and evaluation method for bobbin
KR102243290B1 (en) * 2019-12-27 2021-04-22 넥센타이어 주식회사 A test device for tire
KR20220055274A (en) 2020-10-26 2022-05-03 금호타이어 주식회사 Manufacturing apparatus of tire

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