KR0174595B1 - Cutting force measuring structure of a cutting device - Google Patents
Cutting force measuring structure of a cutting device Download PDFInfo
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- KR0174595B1 KR0174595B1 KR1019950019213A KR19950019213A KR0174595B1 KR 0174595 B1 KR0174595 B1 KR 0174595B1 KR 1019950019213 A KR1019950019213 A KR 1019950019213A KR 19950019213 A KR19950019213 A KR 19950019213A KR 0174595 B1 KR0174595 B1 KR 0174595B1
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- cutting
- deformation
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- cutting force
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- 238000005520 cutting process Methods 0.000 title claims abstract description 62
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0009—Force sensors associated with a bearing
- G01L5/0019—Force sensors associated with a bearing by using strain gages, piezoelectric, piezo-resistive or other ohmic-resistance based sensors
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
본 발명은 절삭가공 중 회전하는 절삭공구에 작용된 절삭력을 베어링을 통한 컴플라이언스의 변형과 스트레인 게이지로서 비치전부에서 손쉽게 측정할 수 있는 절삭력 측정센서에 관한 것으로 기존의 무선전송 시스템에 의한 복잡하고 고가의 방법을 개선한 것이다.The present invention relates to a cutting force measuring sensor which can easily measure the cutting force applied to the rotating cutting tool during cutting, through the bearing as a strain deformation and strain gauge, and is complicated and expensive by the conventional wireless transmission system. That's an improvement.
Description
제1도는 본발명의 일부단면한 설치상태 정면구성도.1 is a front sectional view of a partial cross-sectional installation of the present invention.
제2도는 본발명의 요부분리 사시도.2 is a partial perspective view of the present invention.
제3도는 본발명의 요부발췌 일부단면도.3 is a partial cross-sectional view of the excerpts of the present invention.
제4도는 절삭력에 의한 컴플라이언스의 변형을 나타낸 평면상태도로서,4 is a planar state diagram showing the deformation of the compliance by the cutting force,
(a)는 X축 방향의 변형.(a) is deformation in the X-axis direction.
(b)는 Y축 방향의 변형.(b) is deformation in the Y-axis direction.
제 5 도는 종래의 절삭력 측정구조의 설치상태 정면구성도.5 is a front configuration diagram of an installation state of a conventional cutting force measuring structure.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 하우징 20 : 컴플라이언스10 housing 20 compliance
21a,21b,21c,21d : 변형날개 22 ; 변형공21a, 21b, 21c, 21d: deformed wing 22; Strainer
23 : 관통공 24 : 상부베어링 안착테23: through hole 24: upper bearing seat frame
25 : 하부베어링 안착흠 26 : 고정판25: lower bearing seating defect 26: fixing plate
30 : 상부베어링 40 : 하부베어링30: upper bearing 40: lower bearing
50 : 겐서(스트레인 게이지) 60 : 절삭공구가 결합된 툴홀더50: Genser (strain gauge) 60: Tool holder with cutting tool
61 : 조임너트61: tightening nut
본 발명은 밀링, 드릴 등과 같은 공작기계의 절삭가공중 회전하고 있는 상태의 절삭공구에 작용하는 절삭력을 용이하게 측정할 수 있는 절삭공구의 절삭력 측정구 조에 관한 것이다.The present invention relates to a cutting force measuring structure of a cutting tool that can easily measure the cutting force acting on the cutting tool in a rotating state during cutting of a machine tool such as a milling or a drill.
절삭력 측정의 목적은 기계적인 가공오차의 발생을 줄이기 위하여 이를 감지하여 계측하고 또, 이를 수정하여 절삭진행중 공작기계의 이상유무를 확인함으로써 가공물의 불량률을 최소화 하는데 있다.The purpose of the cutting force measurement is to minimize the defective rate of the workpiece by detecting and measuring it in order to reduce the occurrence of mechanical machining errors, and by correcting it to check the abnormality of the machine tool during the cutting process.
제5도는 종래의 절삭력 측정구조를 나타낸 것으로, 하우징(200)의 내측으로 건전지(204)와 무선전송기(203) 그리고 스트레인 게이지(202)(이하 센서라 약칭함)가 착설되고 변형공(207)이 형성된 컴플라이언스(201), 절삭공구가 고정된 툴홀더(205), 그리고 하우징(200)의 외방 일측에 무선전송기(203)의 무선신호를 수신하는 수신기(206)를 장착하여 된 구성이다.5 illustrates a conventional cutting force measuring structure, in which a battery 204, a wireless transmitter 203, a strain gauge 202 (hereinafter abbreviated as a sensor) are installed inside the housing 200, and a deformation hole 207 is installed. The formed compliance 201, the tool holder 205 having the cutting tool fixed thereto, and a receiver 206 configured to receive a radio signal of the radio transmitter 203 on one side of the housing 200 is mounted.
상기 스트레인 게이지(202)는 변형을 측정하는 센서로서 인장과 압축을 받는 물체의 표면에 착설하여 힘에의한 대상물의 변형을 측정하는 것으로, 도선의 길이가 변화함에 따라 그 전기적 저항이 바뀌는 점을 이용하여 저항을 측정할수 있는 이미 널리 알려진 센서의 일종이다.The strain gauge 202 is a sensor for measuring deformation and is installed on the surface of an object subjected to tension and compression to measure deformation of an object due to a force, and the electrical resistance changes as the length of the conductor changes. It is a kind of well-known sensor that can measure resistance by using.
한편, 이러한 절삭공구의 절삭력 측정구조는 하우징(200)의 내측에 센서(202)가 착설된 컴플라이언스(201)가 툴홀더(205)와 동시에 회전되고 있는 상태이다.On the other hand, in the cutting force measuring structure of the cutting tool, the compliance 201 in which the sensor 202 is mounted inside the housing 200 is simultaneously rotated with the tool holder 205.
컴플라이언스(201)의 변형은 착설된 센서(202)에 의하여 감지되어 이와 유선으로 연결된 무선전송기(203)로 보내지게되고 무선전송기(203)는 하우징(200) 외방의 수신기(206)로 무선송신을 하기위하여 여러 가지 신호처리 단계를 거치게 된다.The deformation of the compliance 201 is detected by the sensor 202 installed and sent to the wireless transmitter 203 connected by wire, and the wireless transmitter 203 transmits the radio to the receiver 206 outside the housing 200. In order to do this, various signal processing steps are performed.
무선전송기(203)의 변조된 절삭력신호는 하우징(200) 외방에 설치된 수신기(206)로 무선 전송하게 되고 수신기(206)가 이 무선신호를 받아 출력함으로써 그 절삭력을 측정하게 된다.The modulated cutting force signal of the radio transmitter 203 is wirelessly transmitted to the receiver 206 installed outside the housing 200, and the receiver 206 receives the radio signal and outputs the radio signal to measure the cutting force.
그러나 상기와같은 종래의 절삭력측정구조는 컴플라이언스(201)가 틀홀더(205)와 동시에 회전하고 있는 상태에서 그 변형량을 센서가 감지하게 되고 감지된 변형량을 무선전송기(103)로 보내어 이를 수신기(206)로 무선전송하는 과정에서, 신호의 왜곡, 손실, 그리고 외부잡음 등에 의한 절삭력신호를 수신기(206)가 정확하게 수신할 수 없게 된다.However, in the conventional cutting force measuring structure as described above, the sensor detects the deformation amount while the compliance 201 is rotating at the same time as the frame holder 205, and sends the detected deformation amount to the wireless transmitter 103 to receive the receiver 206. In the process of wireless transmission, the cutting force signal due to distortion, loss, and external noise of the signal cannot be correctly received by the receiver 206.
따라서 절삭공구의 절삭력 즉, 절삭공구의 수평방향으로 작용하는 힘인 굽힘력의 양호한 계측을 위하여서는 고성능의 부품과 회로기술을 필요로 하게 되고 이에 따르는 경제적인 부담이 가중되고 있다.Therefore, in order to measure the cutting force of the cutting tool, that is, the bending force which is the force acting in the horizontal direction of the cutting tool, high-performance parts and circuit technology are required, and the economic burden is increasing.
그리고 무선전송에 필요한 건전지(204)와 무선전송기(203)등을 하우징(200) 내측으로 수용하기 위하여 하우징(200)의 내용적을 넓게 제작하여야할 뿐 아니라 건전지(204)의 교체에 따르는 번거로움을 수반한다.In addition, in order to accommodate the batteries 204 and the wireless transmitter 203 necessary for the wireless transmission to the inside of the housing 200, the contents of the housing 200 need to be made wide, and the trouble of replacing the batteries 204 is eliminated. Entails.
상기와 같은 문제점을 해결하기위한 본 발명은 절삭공구의 굽힘량을 측정하기 위한 X축과 Y축 양방향의 수평력에 의해 변형되는 컴플라이언스의 십자(+)형 구조, 컴플라이언스의 내측으로 끼워져 상,하부베어링으로 결합되는 툴홀더의 결합구조, 그리고 컴플라이언스를 하우징에 결합시켜주기위한 고정구조등, 일련의 측정구조를 개선하여 컴플라이언스가 툴홀더와 동시에 회전하지 않고서도 절삭공구의 절삭력을 용이하게 계측할 수 있도록 하는데 주안점을 두고 있다.The present invention for solving the above problems is a cross (+) structure of the compliance deformation by the horizontal force in both the X-axis and Y-axis for measuring the bending amount of the cutting tool, the upper and lower bearings A series of measuring structures have been improved, such as the coupling structure of tool holders that are joined together, and the fixing structure for coupling compliance to the housing, so that the compliance of the tool holder can be measured easily without cutting the compliance with the tool holder. The focus is on.
본 발명의 구성 및 작용효과를 설명하면 다음과 같다.Referring to the configuration and effect of the present invention.
센서(50)를 갖는 통상의 컴플라이언스(20)는 중앙에 관통공(23)을 형성한 십자(+)형의 변형날개(21a)(21b)(21c)(216)로 구성하고 이 컴플라이언스(20)상부에는 상부베어링(30)이 안착되는 상부베어링안착테(24)를, 그리고 하부에는 고정판(26)을 구성하는 한편, 고정판(26)의 내측으로는 하부베어링 안착흠(25)을 형성하여 하부베어링 (40)을 결합한다.The normal compliance 20 having the sensor 50 is composed of the cross-shaped deformation blades 21a, 21b, 21c, and 216 having a through hole 23 in the center thereof. The upper bearing seating frame 24 on which the upper bearing 30 is seated, and the fixing plate 26 on the lower part, while the lower bearing seating defects 25 are formed on the inner side of the fixing plate 26. Combine the lower bearing (40).
또, 저부에 절삭공구가 결합된 툴홀더(60)는 그 상단을 조임너트(61)로 고정하는 한편, 컴플라이언스(20)의 외주에는 이를 지지하는 어댑터(101)를 결합하여 그 저부를 고정판(26)과 체결하며 상기 어탭터(101)는 하우징(10)의 걸림턱에 안착시킨 다음 그 상부를 고정링(102)의 걸림턱에 끼워 하우징에(10)고정한 구조이다. 본 발명의 컴플라이언스(20)는 그 내측으로 툴홀더(60)가 상,하부 베어링(30)(40)의 내측으로 끼워겨 절삭공구의 절삭력이 툴흘더(60)와 상,하부 베어링(30)(40)의 내륜, 볼, 외륜, 그리고 컴플라이언스(20)의 변형날개(21a)(21b)(21c)(216)로 이어지는 절삭력 이동경로를 취하고 있다.In addition, the tool holder 60 having a cutting tool coupled to the bottom secures an upper end thereof with a tightening nut 61, while an adapter 101 supporting the same is coupled to an outer circumference of the compliance 20 to fix the bottom of the tool holder 60. 26 and the adapter 101 is seated on the locking jaw of the housing 10, and then the upper portion of the adapter 101 is fitted to the locking jaw of the fixing ring 102 and fixed to the housing 10. In the compliance 20 of the present invention, the tool holder 60 is inserted into the upper and lower bearings 30 and 40 to the inner side thereof, so that the cutting force of the cutting tool is the tool holder 60 and the upper and lower bearings 30. A cutting force movement path is taken to the inner ring, ball, outer ring of the 40 and the deformed blades 21a, 21b, 21c and 216 of the compliance 20.
상기 컴플라이언스(20)의 변형은 상부베어링(30)과 하부베어링(40)에 의하여 전달되는 바, 상부베어링(30)은 X축방향 의 두개의 변형날개(21b)(210) 그리고 하부베어링(40)은 Y축 방향 두개의 변형날개(21a)(21c)에 접면되고 있는 상태이다.The deformation of the compliance 20 is transmitted by the upper bearing 30 and the lower bearing 40, the upper bearing 30 is two deformation blades (21b) 210 and the lower bearing 40 in the X-axis direction ) Is in a state of being in contact with the two deforming blades 21a and 21c in the Y-axis direction.
이러한 변형날개의 변형은 제4도의 (a)와(b)에 도시칸 바와같이 변형날개(21a)(21b)(21c)(21d)의 선단부로부터 그 변형이 점차 진행되고 있는 상태로 이들 모두 절삭력에 대하여 직교하는 방향으로 변형이 이루어지게 된다.The deformation of these deformed blades is a cutting force of both of them in a state where the deformation is gradually progressing from the distal ends of the deformed blades 21a, 21b, 21c, and 21d as shown in Figs. 4A and 4B. The deformation is made in a direction orthogonal to.
또, 이러한 변형이 최대로 이루어지는 부위에 착설된 센서(50)가 변형날개(21a)(21b)(21c)(216)의 변형을 감지하게 되고 여기에서 얻어진 절삭력신호는 하우징(10)의 외방에 유선으로 연결한 통상의 수신기를 통하여 그 변형량을 측정하게 된다. 즉 발명은 통상의 수신기를 통하여 변형량을 측정하나 종래와 같이 무선이 아닌 유선을 채택하고 있다.In addition, the sensor 50 mounted on the site where the deformation is maximized detects the deformation of the deformation blades 21a, 21b, 21c, and 216, and the cutting force signal obtained here is applied to the outside of the housing 10. The deformation amount is measured through a conventional receiver connected by wire. In other words, the invention measures the amount of deformation through a conventional receiver, but employs a wire rather than wireless as in the prior art.
한편, 절삭공구가 고정된 툴홀더(60)는 그 상반부의 저부로부터 하부베어링(40)과, 컴플라이언스(20), 상부베어링(30)을 순차 겪합하여 조임너트(61)로 툴홀더(60)의 상부를 체결한 랑태이며 이러한 컴플라이언스(20)를 하우징(10)에 결합하기 위하여 어댑터(101)를 컴플라이언스(20)의 고정판(26)에 고정시켜준 상태에서 그 상부에 고정링(102)을 끼워 이를 하우징(10)에 체결하고 있는 상태이다.On the other hand, the tool holder 60 having the cutting tool fixed thereon sequentially undergoes the lower bearing 40, the compliance 20, and the upper bearing 30 from the bottom of the upper half of the tool holder 60 with the tightening nut 61. The fixing ring 102 is attached to the upper part in a state in which the adapter 101 is fixed to the fixing plate 26 of the compliance 20 in order to couple the upper portion of the compliance 20 to the housing 10. It is in a state of fitting it to the housing 10.
또 이와같은 상태의 틀홀더(60)의 회동은 상,하부베어링(30)(40)의 내륜과 연동되고 있는 상태이며 컴플라이언스와(20)는 연동되지 않는 상배이다.In addition, the rotation of the frame holder 60 in this state is a state in which the upper and lower bearings 30 and 40 are interlocked with the inner ring, and the compliance and the 20 are not interlocked.
그리고 절삭공구의 절입량에 따라 변화되는 절삭력은 이송방향과 직각으로 작용하게 되고 틀홀더(60)에 전달된 절삭력은 그 상부에 상하로 긴밀히 결합된 상,하베어링(30)(40)의 내륜을 통해 볼과 베어링외륜 그리고 이와 접면된 컴플라이언스(20)의 결합면을 따라 작용혁이 제4도(a)(b)의 화살표 방향으로 미치면서 변형날개(21a)(21b)(21c)(21d)에 변형을 가져오게 된다.And the cutting force changed according to the cutting amount of the cutting tool acts at right angles to the conveying direction and the cutting force transmitted to the frame holder 60 is the inner ring of the upper and lower bearings 30 and 40 closely coupled to the upper and lower sides thereof. The working revolution extends in the direction of the arrow of FIG. 4 (a) (b) along the engagement surface of the ball and bearing outer ring and the compliance 20 which is in contact with the deformed blades 21a, 21b, 21c and 21d. This will bring about a deformation.
변형날개(21a)(21b)(21c)(21d)의 변형은 절삭공구의 절삭력과 직각으로 작용하게 되며 절삭력에 의한 변형이 최대로 이루어지는 변형날개(21a)(21b)(21c)(21d)의 끝 선단부로 부터 변형이 점차 이루어지게 된다.The deformation of the deformation blades 21a, 21b, 21c, and 21d acts at right angles to the cutting force of the cutting tool, and the deformation of the deformation blades 21a, 21b, 21c, 21d of which the deformation by the cutting force is maximized. Deformation will gradually occur from the tip end.
이와같은 변형날개(21a)(21b)(21c)(21d)의 변형은 절삭공구의 절삭력과 절입량에 따라 탄력적인 변형이 지속적으로 이루어지며 변형이 발생하는 부위에 착설된 센서(50)가 이와 연결된 도선의 길이가 늘어나거나 짧아지는 양을 감지하여 이를 하우징(10)의 외방에 유선으로 연결된 통상의 수신기로 송신하게 뢴다.Such deformation of the deformed blades 21a, 21b, 21c, 21d is caused by the elastic deformation continuously according to the cutting force and the cutting amount of the cutting tool, and the sensor 50 installed at the site where the deformation occurs is The length of the connected wire is sensed to be increased or shortened and transmitted to a conventional receiver wired to the outside of the housing 10.
따라서 종래에서와 같이 하우징의 내측에 무선전송기와 전송에 필요한 전지 등을 구비하는데 따르는 구조적인 문제점과 이를 무선으로 공,수신하는데 필요한 주파수변조 등의 단계를 거쳐야하는 제반 불합리한 송수신 방식을 탈피하여 절삭공구의 절삭력에 따르는 컴플라이언스(20)의 변형량을 센서(50)와 유선으로 연결한 통상의 수신기를 통하여 양호한 측정을 이를 수 있다.Therefore, as in the prior art, the cutting tool avoids the structural problems associated with providing a wireless transmitter and a battery necessary for transmission inside the housing and the unreasonable transmission / reception schemes that must undergo steps such as frequency modulation required for wireless transmission and reception. A good measurement can be achieved through a conventional receiver in which the deformation amount of the compliance 20 according to the cutting force of the sensor 50 is wired.
또한, 본 발명은 회전하고 있는 절삭공구에 작용하는 절삭력을 상,하부 베어링(30)(40)을 통하여 컴플라이언스(20)의 변형날개(21a)(21b)(21c)(21d)에 변형을 유도하는 수단을 취함으로써 회전부 즉 툴홀더(60)로부터 작용된 절삭력을 고정된 컴플라이언스(20)의 변형을 통하여 절삭력을 용이하게 측정할 수 있다.In addition, the present invention induces the deformation force to the deformation blades 21a, 21b, 21c and 21d of the compliance 20 through the upper and lower bearings 30 and 40 to the cutting force acting on the rotating cutting tool. By taking the means of cutting, the cutting force applied from the rotating part, that is, the tool holder 60, can be easily measured through the deformation of the fixed compliance 20.
본 발명은 하우징(10) 내측의 공간부를 넓게 점유하지 않으면서 제작이 비교적 간단하고 가격이 저렴한 측정창치를 제공함으로써 엔드밀,드릴머신 등과 같은 공작기계의 절삭력을 양호하게 계측하여 가공물의 가공오차를 현저히 줄일 수 있는 장점이 있다.The present invention provides a relatively simple and inexpensive measurement window without occupying a large space inside the housing 10 to measure the cutting force of machine tools such as end mills and drill machines, thereby reducing the machining error of the workpiece. There is an advantage that can be significantly reduced.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950019213A KR0174595B1 (en) | 1995-07-01 | 1995-07-01 | Cutting force measuring structure of a cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950019213A KR0174595B1 (en) | 1995-07-01 | 1995-07-01 | Cutting force measuring structure of a cutting device |
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| Publication Number | Publication Date |
|---|---|
| KR970007317A KR970007317A (en) | 1997-02-21 |
| KR0174595B1 true KR0174595B1 (en) | 1999-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950019213A KR0174595B1 (en) | 1995-07-01 | 1995-07-01 | Cutting force measuring structure of a cutting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101407861B1 (en) * | 2013-04-15 | 2014-06-16 | 김선현 | Wear of Cutting Tool Wear and sensing devices using the same cutting tool detection methods |
| WO2017082511A1 (en) * | 2015-11-11 | 2017-05-18 | 한국기계연구원 | Apparatus for wirelessly monitoring cutting force of rotating tool |
| KR20180118826A (en) * | 2013-08-13 | 2018-10-31 | 가부시키가이샤 야마모토 킨조쿠 세이사쿠쇼 | Temperature measurement method, and temperature measurement device |
-
1995
- 1995-07-01 KR KR1019950019213A patent/KR0174595B1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101407861B1 (en) * | 2013-04-15 | 2014-06-16 | 김선현 | Wear of Cutting Tool Wear and sensing devices using the same cutting tool detection methods |
| KR20180118826A (en) * | 2013-08-13 | 2018-10-31 | 가부시키가이샤 야마모토 킨조쿠 세이사쿠쇼 | Temperature measurement method, and temperature measurement device |
| WO2017082511A1 (en) * | 2015-11-11 | 2017-05-18 | 한국기계연구원 | Apparatus for wirelessly monitoring cutting force of rotating tool |
Also Published As
| Publication number | Publication date |
|---|---|
| KR970007317A (en) | 1997-02-21 |
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