KR20080028551A - Safety device for torque measurement devices - Google Patents

Safety device for torque measurement devices Download PDF

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Publication number
KR20080028551A
KR20080028551A KR1020060093945A KR20060093945A KR20080028551A KR 20080028551 A KR20080028551 A KR 20080028551A KR 1020060093945 A KR1020060093945 A KR 1020060093945A KR 20060093945 A KR20060093945 A KR 20060093945A KR 20080028551 A KR20080028551 A KR 20080028551A
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South Korea
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torque
rotation
coil spring
servo motor
torque cell
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KR1020060093945A
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Korean (ko)
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KR100915587B1 (en
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박재형
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박재형
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers

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  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

A safety apparatus for a torque measurement device is provided to prevent trouble and damage to a servo motor, a torque cell or objects of torque measurement by absorbing overload to the torque cell or the objects. A torque measurement device includes a servo motor exerting rotation force and a torque cell connected with the servo motor to measure rotation force. A safety apparatus for the torque measurement device comprises rotation plates(10,20) fixed on edges of a rotation shaft(1') of the servo motor and a rotation shaft(2') of the torque cell, hook bars(11,21) projected opposite to each other on each of the rotation plates, a coil spring(30) installed on the outer surface of a pipe unit(22) projected on one of the rotation plates and both hooks(31,31') of the coil spring engaged with the hook bars.

Description

회전토크 측정장치용 안전장치{Safety device for torque measurement devices}Safety device for torque measurement devices

도 1은 본 발명에 의한 회전토크 측정장치의 정면도1 is a front view of a rotation torque measuring apparatus according to the present invention

도 2는 도 1의 부분 확대 단면도2 is a partially enlarged cross-sectional view of FIG.

도 3은 도 2의 A에서 본 측면도 3 is a side view seen from A of FIG.

도 4는 도 3의 B-B선 단면도로서 정상적인 작동상태도 4 is a cross-sectional view taken along line B-B of FIG.

도 5는 도 3의 B-B선 단면도로서 과부하 시의 작동상태도 5 is a cross-sectional view taken along line B-B of FIG.

***도면의 주요 부분에 대한 부호의 설명****** Description of the symbols for the main parts of the drawings ***

1: 서보모터 1': 회전축1: servomotor 1 ': axis of rotation

2: 토크셀 2': 회전축2: torque cell 2 ': rotating shaft

10: 회전판 11: 걸림봉10: turntable 11: locking rod

20: 회전판 21: 걸림봉20: rotating plate 21: locking rod

22: 관체부22: tube

30: 코일스프링 31, 31': 걸림부30: coil spring 31, 31 ': locking part

본 발명은 회전작용이 요구되는 각종 기계부품이나 장치의 회전토크를 측정하는 장치에 사용되는 안전장치에 관한 것으로, 좀 더 구체적으로는 회전토크를 측정하는 장치에서 측정대상물의 불량이나 기타 다른 이유로 인하여 측정대상물의 회전이 정상적으로 이루어지지 않을 경우에 서보모터가 과도하게 회전을 가하여 토크셀이나 측정대상물에 과도한 부하가 작용하지 않도록 쿠션을 갖는 안전장치에 관한 것이다.The present invention relates to a safety device used in a device for measuring the rotational torque of various mechanical parts or devices that require a rotational action, and more particularly, due to a defective object or other reasons in the device for measuring the rotational torque. The present invention relates to a safety device having a cushion so that the servomotor excessively rotates when the object to be measured does not rotate normally so that excessive load is not applied to the torque cell or the object to be measured.

주지된 바와 같이 일정한 각도를 회전하는 작용을 하는 각종 기계부품이나 장치에 있어서, 회전에 소요되는 힘이 균일하여야 하고 정밀성이 요구되는 경우는 제작 후 회전토크를 측정하여 정상적으로 제조되었는지를 검사/판단하게 된다.As is well known, in various mechanical parts or devices that rotate a constant angle, the force required for rotation must be uniform and precision is required. do.

이러한 장치는 통상 일측에 서보모터를 설치하여 검사할 측정대상물을 일정한 각도만큼만 회전시키게 되는 것이고, 그러한 회전작용을 측정대상물에 전달하는 중간에 토크셀을 설치하여 회전력이 토크셀을 통하여 전달되도록 함으로써 측정대상물의 회전에 소요된 힘을 측정하도록 구성된 것이다.Such a device usually rotates a measurement object to be inspected by installing a servo motor on one side only by a certain angle, and installs a torque cell in the middle of transmitting such a rotation action to the measurement object so that the rotational force is transmitted through the torque cell. It is configured to measure the force required to rotate the object.

그런데 종래의 회전토크 측정장치는 서보모터에 의해 회전하는 과정에서 측정할 제품의 불량이나 기타의 다른 이유 등으로 회전력을 측정하는 토크셀이나 검사할 제품 등이 고장 내지 파손되는 문제점이 발생하는데, 그 이유는 서보모터와 토크셀이 직접 연결/구성되어 있는 상태에서 측정할 제품이 설계상 예정된 각도 미만만큼만 회전하고 더 이상 회전하지 않게 되면 서보모터의 정해진 회전이 토크셀과 측정대상물에 무리하게 전달되는 것으로, 이에 따라 서보모터나 토크셀 또는 측정대상물에 무리가 가고 파손이나 고장이 발생하기도 하였던 것이다. However, the conventional rotation torque measuring device has a problem in that the torque cell measuring the rotational force or the product to be inspected is broken or damaged due to the defect of the product to be measured or other reasons during the rotation by the servomotor. The reason is that if the product to be measured with the servo motor and torque cell directly connected / configured rotates by less than the predetermined angle by design and no longer rotates, the fixed rotation of the servo motor is excessively transmitted to the torque cell and the measurement object. As a result, the servomotor, the torque cell, or the measurement object may be overwhelmed and damage or failure may occur.

상기한 문제점을 감안하여 안출한 본 발명에 의하면, 서보모터와 토크셀 사이에 토크셀이나 측정대상물 쪽에서 과도한 부하가 걸리는 경우에 이를 완충할 수 있는 안전장치를 구성함으로써 토크측정 작업시 발생하는 서보모터, 토크셀 또는 측정대상물의 고장과 파손을 방지하고 원활한 측정이 가능하게 함을 목적으로 하는 것이다.According to the present invention devised in view of the above problems, the servomotor generated during the torque measurement operation by configuring a safety device that can buffer the excessive load between the servomotor and the torque cell at the torque cell or the measurement object side In order to prevent the failure and damage of the torque cell or the measuring object and to make a smooth measurement.

본 발명에 의한 안전장치는 회전력을 가하기 위한 서보모터와 회전력을 측정하기 위한 토크셀이 서로 간에 직접 연결되지 않도록 하고 코일스프링으로 동력이 연결되도록 함으로써 정상적인 측정작용 시에는 서보모터의 회전력이 그대로 토크셀에 전달되어 측정이 이루어지며, 정상적인 측정작용 시보다 과도한 부하가 걸릴 경우에는 코일스프링을 감으면서 공회전하도록 구성함을 특징으로 하는바, 이하 첨부된 도면에 의거 본 발명의 바람직한 실시 예를 상세히 살펴보면 다음과 같다.The safety device according to the present invention is such that the servomotor for applying the rotational force and the torque cell for measuring the rotational force are not directly connected to each other, and the power is connected to the coil spring. When the transfer is made to the measurement, when the excessive load takes more than the normal measuring action, characterized in that configured to idle while winding the coil spring, according to the accompanying drawings, the preferred embodiment of the present invention in detail Same as

도 1은 본 발명에 의한 회전토크의 측정장치의 정면도, 도 2는 도 1의 요부확대 단면도, 도 3은 도 2의 A에서 본 측면도, 도 4는 도 3의 B-B선 단면도로서 정상적인 작동상태도, 도 5는 도 3의 B-B선 단면도로서 과부하 시의 작동상태도1 is a front view of the measuring device of the rotary torque according to the present invention, FIG. 2 is an enlarged cross-sectional view of the main part of FIG. 1, FIG. 3 is a side view as seen from A of FIG. 2, and FIG. 5 is a cross-sectional view taken along line BB of FIG.

본 발명의 안전장치는 회전력을 가하기 위한 서보모터(1)가 구성되고 그에 연결되어 회전력을 측정하도록 된 토크셀(2)로 구성되는 회전토크 측정장치를 그 대상으로 작용된다.The safety device of the present invention serves as a rotation torque measuring device composed of a torque cell (2) configured to connect the servo motor (1) for applying the rotation force and to measure the rotation force.

즉, 서보모터(1)와 토크셀(2)을 직접 연결하지 아니하고, 서보모터(1)의 회 전축(1') 끝단과 이와 근접하는 토크셀(2)의 회전축(2') 끝단에 각각 회전판(10)(20)을 고정시키고 각 회전판(10)(20)에는 서로를 향해 돌출되는 걸림봉(11)(21)을 각각 구성하였다.That is, the servo motor 1 and the torque cell 2 are not directly connected to each other, but at the end of the rotation shaft 1 'of the servo motor 1 and the end of the rotation shaft 2' of the torque cell 2 adjacent thereto. Fixing the rotating plate (10, 20) and each of the rotating plate (10, 20) was configured to each engaging bars 11, 21 protruding toward each other.

그리고 일측 회전판(20)에 돌출되는 관체부(22)를 구성한 후 그 외면에 코일스프링(30)을 설치하되 코일스프링(30)은 측정할 대상물품의 회전력보다 큰 범위에서만 작동하는 만큼의 장력을 갖는 것으로 선택하고, 코일스프링(30)의 양단 걸림부(31)(31')가 각각 상기 걸림봉(11)(21)에 어긋나게 걸리도록 하여 구성한 것이다.The coil spring 30 is installed on the outer surface of the tubular part 22 protruding from the one side rotating plate 20, but the coil spring 30 is tensioned as long as it operates only in a range larger than the rotational force of the object to be measured. It selects to have it, and it is comprised so that the latching parts 31 and 31 'of both ends of the coil spring 30 may be caught by the said latching rods 11 and 21, respectively.

도면 중 미설명된 부호 3은 회전각도 측정장치, 4는 측정대상물을 작동시키는 작동부, 5는 측정대상물이다.In the drawings, reference numeral 3, which is not described, denotes a rotation angle measuring device, 4 is an operation unit for operating a measurement object, and 5 is a measurement object.

이러한 구성으로 된 본 발명의 작용을 살펴보면, 회전 토크를 측정할 측정대상물을 토크셀(2)의 아랫부분에 위치시킨 후, 토크셀(2)과 서보모터(1) 등 본 발명의 장치 전체가 하강하여 토크셀(2) 하단에 구성된 작동부(4)가 측정 대상물에 삽입된 후 측정을 시작한다.Looking at the operation of the present invention having such a configuration, after placing the measurement object to measure the rotational torque in the lower portion of the torque cell (2), the entire apparatus of the present invention, such as the torque cell (2) and the servomotor (1) After descending, the operating unit 4 configured at the lower end of the torque cell 2 is inserted into the measurement object and measurement starts.

도 4에서 볼 수 있듯이 서보모터(1)의 회전으로 하단의 회전판(10)을 회전시키게 되면 회전판(10)의 걸림봉(11)이 회동하게 되는데, 이러한 걸림봉(11)과 하부 회전판(20)의 걸림봉(21)이 동시에 코일스프링(30)의 걸림부(31)(31')를 걸고 있는 상태이고 코일스프링(30)의 탄성은 측정대상물(5)의 정상적인 작동에 소요되는 힘보다 크게 설계되었으므로 상부의 회전판(10)과 하부의 회전판(20)이 동시에 회전하게 되는 것이다.As shown in FIG. 4, when the rotating plate 10 at the bottom is rotated by the rotation of the servomotor 1, the locking bar 11 of the rotating plate 10 rotates, and the locking bar 11 and the lower rotating plate 20 are rotated. At the same time the engaging rod 21 of the coil spring 30 is engaged with the engaging portions 31, 31 'of the coil spring 30, the elasticity of the coil spring 30 is more than the force required for the normal operation of the measurement object (5) Since it is designed to be large, the upper rotating plate 10 and the lower rotating plate 20 will rotate at the same time.

따라서 서보모터(1)의 회전력이 그대로 토크셀(2)을 통하여 측정대상물(5)에 전달된다. 이러한 동작은 복귀할 때도 마찬가지이다.Therefore, the rotational force of the servomotor 1 is transmitted to the measurement object 5 via the torque cell 2 as it is. This behavior is the same when returning.

이러한 과정을 통하여 측정대상물이 회전하는데 소요되는 힘을 토크셀(2)이 측정하여 디지털로 표시함으로써 회전 토크의 측정이 가능해지는 것이다.Through this process, the torque required by the measurement object to rotate is measured by the torque cell 2, and digitally displays the rotation torque.

그런데 측정대상물(5)이 불량품일 경우에 즉, 회전하여야 하는 범위가 정상품보다 너무 작거나 회전에 소요되는 힘이 과대하게 큰 경우에는 일반적인 측정장치로 측정을 하게 되면 토크셀이 고장나게 되는 문제가 발생한다.However, when the measuring object 5 is a defective product, that is, when the range to be rotated is too small than the regular product or the force required to rotate is excessively large, the torque cell fails when the measurement is performed by a general measuring device. Occurs.

그러나 본 발명의 경우에는 회전판(10)(20)과 걸림봉(11)(21) 및 코일스프링(30)에 의해 이러한 문제를 방지할 수가 있게 되는데, 측정대상물(5)의 정상적인 작동 범위에 못 미쳐 더 이상 회전하지 못하거나 과도한 부하가 작동하는 상태가 되면 측정대상물(5)에 결합된 토크셀(2)이 더 이상 작동하지 못하게 되므로 토크셀(2)에 연결된 하부 회전판(20)의 걸림봉(21)은 정지되면서 코일스프링(30)의 일측 걸림부(31')를 걸고 중지된 상태에서 서보모터(1)와 연결된 상부 회전판(10)의 걸림봉(11)이 코일스프링(30)의 다른 걸림부(31)를 걸고 정해진 회전을 계속하고 복귀하는 동작까지 작동을 계속하게 된다. (도 5 참조)However, in the case of the present invention, it is possible to prevent such a problem by the rotating plate 10, 20, the engaging rods 11, 21, and the coil spring 30, which does not fall within the normal operating range of the measurement object (5). If the rod is no longer rotated or the excessive load is in operation, the torque cell 2 coupled to the measurement object 5 no longer operates so that the rod of the lower rotating plate 20 connected to the torque cell 2 is stopped. 21 is stopped and the engaging rod 11 of the upper rotating plate 10 connected to the servo motor 1 is stopped in the state in which the engaging portion 31 'of the coil spring 30 is stopped. The operation is continued until the other latching portion 31 is engaged and the predetermined rotation is continued and returned. (See Figure 5)

이와 같은 작동을 통하여 측정대상물의 불량으로 인하여 과도하게 측정장치가 작동하여 부품이 손상되는 일이 없게 되는 것이다.Through this operation, the measuring device is not excessively operated due to a defect of the measuring object so that the parts are not damaged.

이러한 상태에서 하단의 회전각도 측정장치(3)에서는 토크셀(2)이 회전한 정도에 따라 측정대상물(5)이 작동한 정도를 감지하여 콘트롤장치로 전달하면 콘트롤장치에서 이를 판단하여 정상적인 각도만큼 회전이 이루어졌는지를 판단하여 불량 여부를 선별할 수 있게 된다.In this state, the lower rotation angle measuring device 3 detects the degree of operation of the measurement object 5 according to the degree of rotation of the torque cell 2 and transmits it to the control device. By determining whether the rotation has been made it is possible to determine whether the failure.

이상 설명한 바와 같은 본 발명에 의하면, 간단한 구성의 안전장치로 인하여 서보모터나 토크셀 또는 측정대상물에 가해지는 과도한 힘을 방지할 수 있고 이에 따라 측정장치의 수명을 크게 연장하면서 원활하고 정확한 측정을 유지할 수 있게 되는 등 매우 유용한 발명이라 할 수 있다.According to the present invention as described above, it is possible to prevent excessive force applied to the servomotor, the torque cell or the measurement object due to the safety device of a simple configuration, thereby maintaining smooth and accurate measurement while greatly extending the life of the measuring device. It can be said to be a very useful invention.

Claims (1)

회전력을 가하기 위한 서보모터(1)와 그에 연결되어 회전력을 측정하도록 된 토크셀(2)로 구성되는 회전토크 측정장치에 있어서,In the rotation torque measuring device consisting of a servo motor (1) for applying a rotation force and a torque cell (2) connected thereto to measure the rotation force, 서보모터(1)의 회전축(1') 끝단과 이와 근접하는 토크셀(2)의 회전축(2') 끝단에 각각 회전판(10)(20)을 고정시키고, 각 회전판(10)(20)에는 서로를 향해 돌출되는 걸림봉(11)(21)을 각각 구성하며,The rotary plates 10 and 20 are fixed to the ends of the rotary shaft 1 'of the servomotor 1 and the ends of the rotary shaft 2' of the torque cell 2 adjacent thereto, and to each rotary plate 10 and 20, respectively. Each of the engaging rods 11, 21 protruding toward each other, 일측 회전판에는 돌출되는 관체부(22)를 구성한 후 그 외면에 코일스프링(30)을 설치하되, 코일스프링(30)은 측정할 대상물품의 회전력보다 큰 범위에서만 작동하는 만큼의 장력을 갖는 것으로 선택하고,One side of the rotating plate is configured to protrude the tubular portion 22 and then install the coil spring 30 on the outer surface, the coil spring 30 is selected to have a tension as much as operating only in a range larger than the rotational force of the object to be measured and, 코일스프링(30)의 양단 걸림부(31)(31')가 각각 상기 걸림봉(11)(21)에 어긋나게 걸리도록 하여 구성한 것을 특징으로 하는 회전토크 측정장치용 안전장치.Safety device for a rotary torque measuring device, characterized in that the hooking portion (31) (31 ') of both ends of the coil spring (30) is configured to be caught to the locking rod (11) (21).
KR1020060093945A 2006-09-27 2006-09-27 Safety device for torque measurement devices KR100915587B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103101837A (en) * 2011-11-10 2013-05-15 徐工集团工程机械股份有限公司 Detection apparatus for rotational flexibility of lifting hook and lifting hook structure
CN105424245A (en) * 2015-12-17 2016-03-23 东莞市秦智工业设计有限公司 Torque and rotation speed measurement device of anti-falling safety device
CN107941394A (en) * 2017-12-25 2018-04-20 苏州西格尔自动化设备有限公司 One kind presses online for tensioning wheel and damping torque detection device
KR102199971B1 (en) 2019-07-01 2021-01-07 인하대학교 산학협력단 Torque measuring apparatus

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JPS56163429A (en) 1980-05-20 1981-12-16 Citizen Watch Co Ltd Device for measuring torque
KR0167660B1 (en) * 1995-12-18 1999-03-30 한승준 Limit torque restricting shaft coupling
JPH11230839A (en) 1998-02-16 1999-08-27 Hoshizaki Electric Co Ltd Torque-detecting device
JPH11241959A (en) 1998-02-25 1999-09-07 Hoshizaki Electric Co Ltd Torque detecting device
JP3640022B2 (en) 2002-07-22 2005-04-20 杉▲崎▼計器株式会社 Safety device for rotational torque measurement jig

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103101837A (en) * 2011-11-10 2013-05-15 徐工集团工程机械股份有限公司 Detection apparatus for rotational flexibility of lifting hook and lifting hook structure
CN105424245A (en) * 2015-12-17 2016-03-23 东莞市秦智工业设计有限公司 Torque and rotation speed measurement device of anti-falling safety device
CN105424245B (en) * 2015-12-17 2018-03-20 潘素娇 A kind of torque rotary speed measuring device for anti-falling safety device
CN107941394A (en) * 2017-12-25 2018-04-20 苏州西格尔自动化设备有限公司 One kind presses online for tensioning wheel and damping torque detection device
CN107941394B (en) * 2017-12-25 2024-04-23 苏州西格尔自动化设备有限公司 Be used for online pressure of take-up pulley to rivet and damping moment check out test set
KR102199971B1 (en) 2019-07-01 2021-01-07 인하대학교 산학협력단 Torque measuring apparatus

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