KR100558694B1 - A method of measuring rotation velocity of non-contacting tire - Google Patents

A method of measuring rotation velocity of non-contacting tire Download PDF

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KR100558694B1
KR100558694B1 KR1020040107838A KR20040107838A KR100558694B1 KR 100558694 B1 KR100558694 B1 KR 100558694B1 KR 1020040107838 A KR1020040107838 A KR 1020040107838A KR 20040107838 A KR20040107838 A KR 20040107838A KR 100558694 B1 KR100558694 B1 KR 100558694B1
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South Korea
Prior art keywords
tire
measuring
contact
driving body
speed
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KR1020040107838A
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Korean (ko)
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이기성
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한국타이어 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • 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
    • G01M17/022—Tyres the tyre co-operating with rotatable rolls
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/46—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage
    • G01P3/465—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage by using dynamo-electro tachometers or electric generator

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Balance (AREA)

Abstract

본 발명은 타이어의 동적 특성 중 동적 발란스(Dynamic balance) 측정시 측정반복 정도 향상을 위한 타이어 회전속도 측정방법에 관한 것으로, 더욱 상세하게는 타이어의 회전속도를 보다 정확하게 측정할 수 있으며, 다음 시험진행을 위해 드럼과 타이어 재접촉시 이 시험하는 타이어와 드럼에 손상이 발생하지 않도록 이루어진 타이어의 비접촉시 회전속도 측정방법에 관한 것이다.The present invention relates to a tire rotation speed measuring method for improving the degree of repeatability when measuring the dynamic balance of the dynamic characteristics of the tire, more specifically, it is possible to more accurately measure the rotation speed of the tire, For the purpose of the present invention relates to a method of measuring the rotational speed of a tire when the tire and the tire are re-contacted so that no damage occurs to the tire and the drum being tested.

이를 위해 본 발명은 구동체(1)를 이용하여 스핀들 축(2)에 장착된 타이어(3)를 회전시키어 엔코더로 이 회전하는 타이어의 회전속도를 측정하는 방법에 있어서, 상기 구동체(1)와 접촉하여 회전하는 타이어(3)가 일정속도에 도달하면, 이 타이어(3)에서 구동체(1)를 이격시킨 다음, 프리상태로 회전하는 타이어(3)의 회전속도가 감속되어 측정 회전속도에 도달하면 로드셀(4)에 의해 동적 발란스 량의 측정이 이루어지고, 다음 재측정을 위해 구동체(1)와 타이어(3)가 재접촉시 이 구동체(1)와 타이어(3)의 접촉손상을 방지하기 위해 타이어(3)와 구동체(1)의 회전 선속도들을 서로 일치시키어 재접촉 시키도록 되어 있다.To this end, the present invention, in the method for measuring the rotational speed of the tire is rotated by the encoder by rotating the tire (3) mounted on the spindle shaft (2) using the drive body (1), the drive body (1) When the tire 3 that rotates in contact with the tire reaches a constant speed, the driving body 1 is spaced apart from the tire 3, and then the rotation speed of the tire 3 that rotates in the free state is decelerated to measure the measured rotation speed. When is reached, the dynamic balance amount is measured by the load cell 4, and when the driving body 1 and the tire 3 are in recontact with each other for remeasurement, the driving body 1 and the tire 3 come into contact with each other. In order to prevent damage, the linear linear velocities of the tire 3 and the driving body 1 are matched with each other and brought into contact again.

Description

타이어의 비접촉식 회전속도 측정방법{A method of measuring rotation velocity of non-contacting tire}A method of measuring rotation velocity of non-contacting tire

도 1은 본 발명에 따른 타이어의 비접촉식 동적 발란스 측정시 타이어의 회전속도 측정방법의 적용단계를 나타낸 흐름도들,1 is a flowchart showing an application step of a method of measuring a rotational speed of a tire when measuring a non-contact dynamic balance of a tire according to the present invention;

도 2와 도 3은 종래 타이어의 동적 발란스를 측정하기 위해 타이어 회전속도 측정장치를 나타낸 도면이다.2 and 3 is a view showing a tire rotation speed measuring device for measuring the dynamic balance of the conventional tire.

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

1 : 구동체, 2 : 스핀들 축,1: driving body, 2: spindle axis,

3 : 타이어, 4 : 로드셀.3: tire, 4: load cell.

본 발명은 타이어의 동적 특성 중 동적 발란스(Dynamic balance) 측정시 측정반복 정도 향상을 위한 타이어 회전속도 측정방법에 관한 것으로, 더욱 상세하게는 타이어의 회전속도를 보다 정확하게 측정할 수 있으며, 다음 시험진행을 위해 드럼과 타이어 재접촉시 이 시험하는 타이어와 드럼에 손상이 발생하지 않도록 이루어진 타이어의 비접촉시 회전속도 측정방법에 관한 것이다.The present invention relates to a tire rotation speed measuring method for improving the degree of repeatability when measuring the dynamic balance of the dynamic characteristics of the tire, more specifically, it is possible to more accurately measure the rotation speed of the tire, For the purpose of the present invention relates to a method of measuring the rotational speed of a tire when the tire and the tire are re-contacted so that no damage occurs to the tire and the drum being tested.

타이어의 동적특성 중 동적 발란스는 타이어의 중량 불균형을 말하며, 이 중량 불균형을 측정하는 장치는 타이어가 장착되는 스핀들과 이 타이어를 회전시키는 구동부가 별도로 설치되어 있는바, 그리고 타이어 동적 발란스 측정은 타이어가 고속회전을 할 경우에만 그 측정이 가능하므로, 종래에는 도 2에 도시된 바와 같이 회전하는 드럼 또는 벨트와 같은 구동체(101)가 타이어(103)에 접촉되어 타이어(103)를 고속으로 회전시켜 주면서 스핀들 축(102)에 부착된 로드셀(104)에 의해 그 진동량을 측정하도록 되어 있었다.The dynamic balance of the tire's dynamic characteristics refers to the weight imbalance of the tire, and the device for measuring the weight imbalance is provided with a spindle on which the tire is mounted and a driving unit for rotating the tire. Since the measurement is possible only at high speed rotation, in the related art, a driving body 101 such as a drum or a belt rotating as shown in FIG. 2 contacts the tire 103 to rotate the tire 103 at a high speed. The vibration amount was measured by the load cell 104 attached to the spindle shaft 102.

또한 이외에도 도 3과 같이 타이어(103)가 장착된 스핀들 축(102) 하부에 구동원판(105)을 회동 모터(106)가 부착된 항공기용 타이어(107)를 밀착시켜 회전시키어 로드셀(104)에 의해 타이어(103)의 진동량을 측정하도록 되어 있었다.In addition, as shown in FIG. 3, the driving disc 105 is attached to the lower portion of the spindle shaft 102 on which the tire 103 is mounted, and the aircraft tire 107 with the rotation motor 106 is brought into close contact with the load cell 104. The vibration amount of the tire 103 was measured by this.

그러나 종래 상기와 같이 스핀들 축(102)이 구동체(101)에 의해 밀착된 상태에서 타이어의 동적 발란스를 측정하게 되면, 구동장치의 진동이 스핀들 축(102)에 전달되어 로드셀(104)에 의해 측정할 때 타이어의 진동량 뿐만 아니라 구동장치의 구동 진동력도 전달되어 결과적으로 측정정도를 떨어뜨리어 정확한 측정값을 얻을 수 없는 문제점이 있었다.However, when measuring the dynamic balance of the tire in the state in which the spindle shaft 102 is in close contact with the drive body 101 as described above, the vibration of the drive device is transmitted to the spindle shaft 102 to be carried out by the load cell 104. When measuring, not only the vibration amount of the tire but also the driving vibration force of the driving device is transmitted, resulting in a problem that the accuracy of the measurement cannot be obtained because the measurement accuracy is lowered.

이에 본 발명은 상기와 같은 종래 문제점을 해결하기 위해 발명된 것으로, 구동체에 접촉된 타이어를 일정속도로 가속한 다음, 상기 구동체와 타이어를 이격시킨 상태, 즉 타이어의 프리상태에서 이 타이어의 회전속도를 실시간으로 측정하면서 동적 발란스 측정속도에 이르렀을 때 로드셀 신호를 취득하게 하는 정확한 실 시간 회전속도 측정방법과 다음 동작을 위해 아직 감속하고 있는 타이어를 드럼과 접촉시켜 감속시 속도차이에 의한 타이어 표면 손상을 없애기 위해 타이어 감속되는 타이어 회전속도와 드럼의 회전 선속도를 일치시켜 상대속도를 "0"으로 만든 상태에서 타이어와 드럼이 접촉하도록 하는 방법을 제공함에 그 목적이 있다.Accordingly, the present invention has been invented to solve the above-described conventional problems, and the tire in contact with the driving body is accelerated at a constant speed, and then the driving body and the tire are separated from each other, that is, in the free state of the tire. Accurate real-time rotational speed measurement method that acquires load cell signal when the dynamic balance measurement speed is reached while measuring the rotational speed in real time, and the tire due to speed difference when decelerating the tire that is still decelerating for the next operation It is an object of the present invention to provide a method for allowing a tire and drum to contact with a relative speed set to "0" by matching the tire deceleration speed with which the tire is decelerated to eliminate surface damage.

상기와 같은 목적을 달성하기 위한 본 발명은 드럼과 같은 구동체를 이용하여 스핀들 축에 장착된 타이어를 회전시켜 회전축에 부착된 엔코더를 통하여 회전하는 이 타이어의 회전속도를 측정하는 방법에 있어서, 상기 구동체와 접촉하여 회전하는 타이어가 일정 회전속도에 도달하면, 이 타이어에서 구동체를 이격시킨 다음, 프리상태로 회전하는 타이어의 회전속도가 감속되어 측정 회전속도에 도달하면 측정을 하고, 이어 다음 측정진행을 위해 구동체와 타이어가 재접촉시 구동체와 타이어의 손상방지를 위해 타이어와 구동체의 회전 선속도들을 서로 일치시키어 재접촉 시키도록 되어 있다.The present invention for achieving the above object in the method for measuring the rotational speed of the tire to rotate through the encoder attached to the rotating shaft by rotating the tire mounted on the spindle shaft using a drive such as a drum, the When the tire rotating in contact with the driving body reaches a certain rotational speed, the driving body is spaced apart from the tire, and then, when the rotational speed of the tire rotating in the free state is decelerated to reach the measurement rotational speed, measurement is performed. When the driving body and the tire are in contact again for the progress of the measurement, the linear linear velocities of the tire and the driving body are matched with each other to prevent the damage of the driving body and the tire.

이하, 본 발명을 첨부된 예시도면에 의거 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 타이어의 회전속도 측정시 이의 적용단계들을 흐름방식으로 나타낸 것이다.Figure 1 shows the application steps thereof in the flow method when measuring the rotational speed of the tire according to the present invention.

본 발명은 드럼과 같은 구동체(1)를 이용하여 스핀들 축(2)에 장착된 타이어(3)를 회전시키어 엔코더로 이 회전하는 타이어의 회전속도를 측정하는 방법에 있어서, 상기 구동체(1)와 접촉하여 회전하는 타이어(3)가 일정속도에 도달하면, 이 타이어(3)에서 구동체(1)를 이격시킨 다음, 프리상태로 회전하는 타이어(3)의 회전 속도가 감속되어 측정 회전속도에 도달하면 로드셀(4)에 의해 동적 발란스량의 측정이 이루어지고, 다음 재측정을 위해 구동체(1)와 타이어(3)가 재접촉시 이 구동체(1)와 타이어(3)의 접촉손상을 방지하기 위해 타이어(3)와 구동체(1)의 회전 선속도들을 서로 일치시키어 재접촉 시키도록 되어 있다.The present invention relates to a method of measuring a rotational speed of a tire (3) mounted on a spindle shaft (2) using a drive (1), such as a drum, to rotate the tire (3). When the rotating tire 3 reaches a constant speed, the driving body 1 is spaced apart from the tire 3, and then the rotation speed of the tire 3 rotating in the free state is decelerated to measure the measurement rotation. When the speed is reached, the dynamic balance amount is measured by the load cell 4, and when the driving body 1 and the tire 3 are in recontact with each other for re-measurement, the driving body 1 and the tire 3 In order to prevent contact damage, the linear linear velocities of the tire 3 and the drive body 1 are matched with each other and brought into contact again.

즉, 본 발명의 타이어의 비접촉시 회전속도 측정방법은 구동체(1)와 타이어(3)를 도 1(B)의 (가)와 같이 이격시키어 타이어(3)의 측정 회전속도에서 엔코더를 이용하여 먼저 측정한 다음, 이어 1차 측정이 완료 후, 다음 측정을 위해 구동체(1)와 타이어(3)를 다시 접촉할 때, 스핀들 축(2)에 부착된 공지의 엔코더의 시간대비 펄스구간을 이용하여 타이어(3)의 실시간 회전속도를 계산한 후, 상기 구동체(1)를 타이어(3)의 동기속도에 일치시키어 도 1(C)의 (나)방향으로 이 구동체(1)가 이동하여 타이어(3)의 속도차이 없이 재접촉이 이루어짐에 따라 양자의 접촉에 따른 손상이 발생하지 않고 재시험이 지속적으로 가능하도록 되어 있다.That is, in the non-contact rotation speed measurement method of the tire of the present invention, the encoder 1 is used at the measurement rotation speed of the tire 3 by separating the driving body 1 and the tire 3 as shown in FIG. After the first measurement is completed, and then contacting the drive body 1 and the tire 3 again for the next measurement, the pulse interval over time of the known encoder attached to the spindle shaft (2) After calculating the real-time rotational speed of the tire 3 using, the drive body 1 is aligned with the synchronous speed of the tire 3, and the drive body 1 in the direction (b) of FIG. As the re-contact is made without moving the speed of the tire 3, the retest is possible without damaging the contact between the two.

여기서, 상기 구동체(1)와 타이어(3)의 재접촉을 위한 선속도 산출방법은 다음과 같다.Here, the linear speed calculation method for re-contacting the drive body 1 and the tire 3 is as follows.

도 1(C)와 같이 이격되어 회전하는 타이어(3)가 정해진 RPM까지 감속되었을 때 구동체(1)가 타이어(3) 외경을 계산하여 선속도를 맞추도록 되어 있다.When the tire 3 to be spaced apart and rotated as shown in Fig. 1C is decelerated to a predetermined RPM, the drive body 1 calculates the tire 3 outer diameter to match the linear speed.

예를 들어 타이어(3)는 750rpm까지 감속되었을 때를 이를 공지의 엔코더가 감지하여 신호를 보내게 되면, 구동체(1)는 미리 타이어(3) 외경과 750rpm 일 때의 선속도를 계산하여 이 구동체(1)의 회전속도를 일치시키며 대기하고 있다가 신호가 "ON"되면 도 1(D)와 같이 다시 접촉하여 타이어(3)를 재차 가속 회전시키게 된다.For example, when the tire 3 decelerates to 750 rpm and a known encoder detects a signal and sends a signal, the driving body 1 calculates the outer diameter of the tire 3 and the linear velocity at 750 rpm. When the signal is "ON" while waiting to match the rotational speed of the driving body 1, the vehicle 3 is again contacted as shown in FIG. 1D to accelerate and rotate the tire 3 again.

타이어 외경 600일 때 When tire outer diameter is 600

타이어 외경/드럼 외경 X 750rpmTire Outer Diameter / Drum Outer X 750rpm

= 600/854.1 X 750rpm = 421.5rpm= 600 / 854.1 X 750 rpm = 421.5 rpm

여기서 드럼 외경 854.1은 상수.Where drum outer diameter 854.1 is a constant.

타이어 외경 700일 때When tire outer diameter is 700

= 700/854.1 X 750rpm = 614.7rpm= 700 / 854.1 X 750 rpm = 614.7 rpm

이와 같이 얻어진 구동체(1)의 회전속도를 회전하는 타이어(3)의 선속도와 일치시킨 다음 접촉시키게 되는 것이다.The rotational speed of the drive body 1 thus obtained is matched with the linear speed of the rotating tire 3 and then brought into contact.

상기와 같이 본 발명은 타이어의 동적 발란스 측정시 측정 반복정도 향상을 위한 타이어 회전속도 측정 방법으로, 보다 정확한 측정이 가능하며, 또한 진행을 위해 드럼과 타이어가 재 접촉시 타이어나 드럼에 손상이 생기지 않도록 상대 속도가 0이 되도록 회전 선속도를 일치시키는 방법으로 위 방식의 설비의 성능 향상에 막대한 이익을 가져다 준다.As described above, the present invention is a method of measuring tire rotation speed to improve measurement repeatability when measuring a dynamic balance of a tire, and more accurate measurement is possible, and also damage to a tire or a drum when the drum and the tire re-contact to proceed. By matching the rotational linear velocity so that the relative velocity is zero, it brings enormous benefit to the performance improvement of the above system.

Claims (1)

구동체(1)를 이용하여 스핀들 축(2)에 장착된 타이어(3)를 회전시키어 엔코더로 이 회전하는 타이어의 회전속도를 측정하는 방법에 있어서, 상기 구동체(1)와 접촉하여 회전하는 타이어(3)가 일정속도에 도달하면, 이 타이어(3)에서 구동체(1)를 이격시킨 다음, 프리상태로 회전하는 타이어(3)의 회전속도가 감속되어 측정 회전속도에 도달하면 로드셀(4)에 의해 동적 발란스량의 측정이 이루어지고, 다음 재측정을 위해 구동체(1)와 타이어(3)가 재접촉시 이 구동체(1)와 타이어(3)의 접촉손상을 방지하기 위해 타이어(3)와 구동체(1)의 회전 선속도들을 서로 일치시키어 재접촉 시키도록 이루어진 타이어의 비접촉식 회전속도 측정방법.In the method of measuring the rotational speed of this rotating tire by rotating the tire (3) mounted on the spindle shaft (2) by using the drive body (1), it is rotated in contact with the drive body (1) When the tire 3 reaches a certain speed, the driving body 1 is spaced apart from the tire 3, and then the rotational speed of the tire 3 rotating in the free state is decelerated to reach the measured rotational speed. 4) the dynamic balance is measured, and in order to prevent contact damage between the drive body 1 and the tire 3 when the drive body 1 and the tire 3 re-contact for the next re-measurement. A non-contact rotational speed measuring method of a tire configured to bring the linear linear velocities of the tire (3) and the driving body (1) into contact with each other.
KR1020040107838A 2004-12-17 2004-12-17 A method of measuring rotation velocity of non-contacting tire KR100558694B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6139401A (en) 1996-10-15 2000-10-31 The Goodyear Tire & Rubber Company Method of correcting the imbalance of a pneumatic tire with a tire uniformity machine
US6393911B2 (en) 1996-01-31 2002-05-28 Hunter Engineering Company Wheel balancer with control circuit and rim runout measurement
KR20020072211A (en) * 2001-03-08 2002-09-14 고쿠사이 게이소쿠키 가부시키가이샤 Apparatus and method for measuring uniformity and/or dynamic balance of tire
KR20020090561A (en) * 2001-05-28 2002-12-05 진을천 Apparatus for measuring Wheel balance and Method therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6393911B2 (en) 1996-01-31 2002-05-28 Hunter Engineering Company Wheel balancer with control circuit and rim runout measurement
US6139401A (en) 1996-10-15 2000-10-31 The Goodyear Tire & Rubber Company Method of correcting the imbalance of a pneumatic tire with a tire uniformity machine
KR20020072211A (en) * 2001-03-08 2002-09-14 고쿠사이 게이소쿠키 가부시키가이샤 Apparatus and method for measuring uniformity and/or dynamic balance of tire
KR20020090561A (en) * 2001-05-28 2002-12-05 진을천 Apparatus for measuring Wheel balance and Method therefor

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