KR100804404B1 - Cut-detecting method of work for nc lathe - Google Patents

Cut-detecting method of work for nc lathe Download PDF

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KR100804404B1
KR100804404B1 KR1020060084916A KR20060084916A KR100804404B1 KR 100804404 B1 KR100804404 B1 KR 100804404B1 KR 1020060084916 A KR1020060084916 A KR 1020060084916A KR 20060084916 A KR20060084916 A KR 20060084916A KR 100804404 B1 KR100804404 B1 KR 100804404B1
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South Korea
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tool
detection
motor load
cutting
value
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KR1020060084916A
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Korean (ko)
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권병호
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한화테크엠주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
    • B23Q17/0957—Detection of tool breakage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
    • B23Q15/22—Control or regulation of position of tool or workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
    • B23Q17/0961—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining by measuring power, current or torque of a motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B23Q17/0995—Tool life management
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
    • G05B23/0286—Modifications to the monitored process, e.g. stopping operation or adapting control
    • G05B23/0291—Switching into safety or degraded mode, e.g. protection and supervision after failure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2717/00—Arrangements for indicating or measuring
    • B23Q2717/003—Arrangements for indicating or measuring in lathes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Numerical Control (AREA)

Abstract

A workpiece cut detecting method for an NC lathe is provided to reduce costs and improve space utilization by carrying out a cut detection process through software. A workpiece cut detecting method for an NC lathe includes a step of selecting a detecting tool from tools except for cutting tools, a step of inputting a cut detection start point and a cut detection end point of the detecting tool, a step of measuring a motor load at a no-load state one or more times when the detecting tool moves from the start point to the end point, a step of automatically inputting maximum and minimum allowable motor load values by adding and subtracting a predetermined value to and from the maximum and minimum values of the measured motor load, and a step of emergently stopping a machine in case where the measured motor load value exceeds the minimum and maximum allowable motor load values.

Description

자동선반의 공작물 절단검출방법{Cut-detecting method of work for NC lathe}Cut-detecting method of work for NC lathe}

도 1은 본 발명에 의한 자동선반의 공작물 절단검출방법의 플로우챠트1 is a flow chart of the workpiece cutting detection method of the automatic lathe according to the present invention

도 2는 디스플레이 화면의 예시도2 is an exemplary view of a display screen

< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>

10. 사용자 설정부분 11. 검출공구번호10. User setting section 11. Detection tool number

12. 검출공구 x축 형상보정값 13. 검출공구 y축 형상보정값12. Detection tool x-axis shape correction value 13. Detection tool y-axis shape correction value

14. 검출시작점 15. 검출끝점14. Detection start point 15. Detection end point

16. 무부하 이송횟수 20. 디스플레이 부분16. No-load feed rate 20. Display part

21. 무부하시험 완료창 22. 무부하시험 카운터값21. No-load test completion window 22. No-load test counter value

23. 무부하시험 최소전류치 24. 무부하시험 최대전류치23. No-load test minimum current value 24. No-load test maximum current value

본 발명은 자동선반의 공작물 절단검출방법에 대한 것으로서, 더욱 상세하게는 절단공구 이외의 공구를 선정하여 상기 공구의 무부하 상태의 모터부하량을 1회 이상 측정한 뒤 최대ㆍ최소값을 산출하고 이 최대ㆍ최소값을 참고로 최대ㆍ최소모터부하량의 값이 자동으로 입력된 뒤 가공시 측정된 모터부하량의 값이 최대ㆍ최소모터부하량의 값을 벗어나면 기계를 비상정지하는 것이다.The present invention relates to a workpiece cutting detection method of an automatic lathe, and more particularly, selects a tool other than a cutting tool, and measures the motor load in a no-load state of the tool one or more times to calculate the maximum and minimum values. If the maximum and minimum motor load values are automatically input with reference to the minimum value, and the motor load value measured during machining is out of the maximum and minimum motor load value, the machine will be emergency stop.

일반적으로 자동선반에는 다양한 공구가 장착될 수 있는 공구대가 주축이나 서브축의 주위에 형성되어 있으며, 그중 가공을 마무리 짓는 절단바이트가 장착되어 있는 외경공구대가 형성되어 있다. 상기 외경공구대의 절단바이트는 가공소재의 가공 완료 후 또는 주축의 가공완료 후 서브축에서의 척킹을 위해 소재를 일정한 크기로 절단해주는 역할을 하는데 반복사용으로 인해 파손될 위험이 있어 평균적인 소재의 가공횟수나 육안에 의한 마모 판단으로 교체하여 사용하였다.In general, an automatic lathe is formed around a main axis or a sub-axis that can be equipped with a variety of tools, of which the outer diameter tool bench is equipped with a cutting bite to finish the processing. The cutting bite of the outer diameter tool tool serves to cut the material to a certain size for chucking on the sub-axis after the completion of the processing of the processing material or the completion of the processing of the main shaft. B. It was replaced by the wear judgment by the naked eye.

그러나, 절단바이트가 항상 평균화된 가공횟수에 미치지 못하고 파손되는 경우가 발생할 수 있으며 이를 감지하지 못한 채 가공을 진행하게 되면 가공소재와 타공구 또는 공구대의 충돌로 인해 기계나 공구가 파손될 위험이 높다.However, the cutting bite may be broken at less than the average number of times the machining process, and if the machining proceeds without detecting this, there is a high risk of damage to the machine or tool due to the collision of the workpiece and other tools or tool stand.

이를 방지하기 위해 고안된 장치로서 본 출원인이 선출원한 실용신안등록 제402269호와 같은 자동선반의 절단검출장치가 있다. 이런 종래의 절단검출장치는 소재를 척킹하는 척의 주위에 형성되어 있는 절단바이트가 절단을 행한 뒤 실린더의 동작으로 터치스위치가 작동되어 절단여부를 검출하는 것으로서, 실린더의 동작속도를 높여 절단검출시간을 단축할 수 있다는 장점은 있으나 연속 가공시 소재에서 배출되는 칩에 의해 실린더의 작동이 원활하게 이루어지지 않을 위험이 있다. As a device designed to prevent this, there is a cutting detection device for an automatic shelf such as Utility Model Registration No. 402269, filed by the applicant. The conventional cutting detection device detects whether the cutting bite is formed by cutting the cutting bite formed around the chuck for cutting the material, and then operates the touch switch to detect the cutting. There is an advantage that it can be shortened, but there is a risk that the operation of the cylinder is not made smoothly by the chip discharged from the material during continuous processing.

또한, 기계의 크기에 비해 보다 많은 공구가 장착될 수 있기를 소망하는 소비자들의 요구에 반하여 부가 장치를 부착하여야 하는 단점이 있었다.In addition, there has been a disadvantage in that an additional device has to be attached against the demands of consumers who want more tools to be mounted compared to the size of the machine.

따라서, 본 발명은 별도의 부가장치가 필요없이 절단공구 이외의 공구를 검출공구로 선정하여 상기 검출공구로서 소재의 절단검출 여부를 확인할 수 있는 자동선반의 공작물 절단검출방법을 제공하는데 그 목적이 있다.Accordingly, an object of the present invention is to provide a method for cutting a workpiece of an automatic lathe capable of checking whether cutting of a material is detected as a detection tool by selecting a tool other than a cutting tool without the need for an additional device. .

또한, 본 발명은 부가장치가 필요없이 소프트웨어로 절단검출을 행함으로써 제작비용을 절감하고 보다 넓은 공간을 활용할 수 있는 자동선반을 제공할 수 있다.In addition, the present invention can provide an automatic lathe that can reduce the production cost and utilize a wider space by performing cutting detection by software without the need for an additional device.

본 발명은 자동선반의 공작물 절단검출방법에 대한 것으로서, 더욱 상세하게는 절단공구 이외의 공구를 선정하여 상기 공구의 무부하 상태의 모터부하량을 1회 이상 측정한 뒤 최대ㆍ최소값을 산출하고 이 최대ㆍ최소값을 참고로 허용 최대ㆍ최소모터부하량의 값이 자동으로 입력된 뒤 가공시 측정된 모터부하량의 값이 허용 최대ㆍ최소모터부하량의 값을 벗어나면 기계를 비상정지하는 것이다.The present invention relates to a workpiece cutting detection method of an automatic lathe, and more particularly, selects a tool other than a cutting tool, and measures the motor load in a no-load state of the tool one or more times to calculate the maximum and minimum values. Refer to the minimum value and allow the maximum and minimum motor load value to be automatically input and then stop the machine if the value of the motor load measured during machining is out of the allowable maximum and minimum motor load value.

더욱 상세하게는 절단공구 이외의 공구를 검출공구로 선정하고, 상기 검출공구의 절단검출 시작점과 끝점을 입력한 뒤, 무부하 상태의 모터부하량을 1회 이상 측정하고, 측정된 모터부하량의 최대ㆍ최소값에 사용자가 임의로 정한 소정의 값(α)을 가감하여 허용 최대ㆍ최소모터부하량의 값이 자동으로 입력된 뒤, 가공시 측정된 모터부하량의 값이 허용최소모터부하량값과 허용최대모터부하량값의 범위를 벗어나면 기계를 비상정지하게 된다.More specifically, a tool other than the cutting tool is selected as the detection tool, the cutting detection start point and the end point of the detection tool are input, the motor load in the no-load state is measured one or more times, and the maximum and minimum values of the measured motor load are measured. The value of allowable maximum and minimum motor load is automatically inputted by adding or subtracting a predetermined value (α) arbitrarily determined by the user. Then, the value of the motor load measured at the time of machining is the value of the allowable minimum motor load value and the allowable maximum motor load value. If out of range, the machine will be emergency stopped.

이하, 첨부된 도면에 의해 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 의한 자동선반의 공작물 절단검출방법의 플로우챠트로서, 시간상으로 진행되는 과정을 순차적으로 설명하면, 먼저 절단검출을 행할 검출공구를 선정하고, 상기 검출공구가 절단검출을 행할 시작점과 끝점을 입력한다. 상기 검출공구의 시작점과 끝점은 반드시 척에 척킹되어 있는 공작물을 지나가도록 입력되어야 함은 당연하다.
여기서, 상기 검출공구는 절단공구 중에서 가공에 사용되지 않는 공구들 중에서 하나를 지정함이 바람직한데, 검출공구는 공작물의 가공에 따라 바뀔 수 있다. 즉, 공구 중에서 드릴이 사용되지 않는다면 상기 드릴을 검출공구로 지정해줄 수 있고 리이머(reamer)가 사용되지 않는다면 상기 리이머를 검출공구로 지정해줄 수 있다.
즉, 상기 검출공구는 일반적으로 사용되는 자동선반의 공구라면 서보모터의 부하량을 측정할 수 있는 모든 것을 검출공구로 지정하여도 무방하다.1 is a flowchart of a workpiece cutting detection method of an automatic lathe according to the present invention, when a process progressing in time is sequentially explained, first, a detection tool for cutting detection is selected, and the detection tool starts the cutting detection point. And end point. Naturally, the start and end points of the detection tool must be input to pass through the workpiece chucked to the chuck.
Here, it is preferable that the detection tool specifies one of the tools that are not used for machining among the cutting tools, and the detection tool can be changed according to the processing of the workpiece. That is, if a drill is not used among the tools, the drill may be designated as the detection tool, and if the reamer is not used, the reamer may be designated as the detection tool.
In other words, if the detection tool is a tool of an automatic lathe generally used, it is also possible to designate a detection tool that can measure the load of the servomotor.

이후 모터부하량을 측정하는데 검출공구가 시작점에서 끝점까지 이동되는 동안 공작물에 의해 간섭이 없는 무부하 상태의 모터부하량을 1회 이상 측정한다. 즉, 상기 검출공구가 다른 공작물이나 공구대에 의해 이동의 간섭을 받지 않는 상태에서 모터부하량을 측정하여 모터부하량의 최대ㆍ최소값을 산정한다.After that, the motor load is measured one or more times without any interference by the workpiece while the detection tool is moved from the starting point to the end point. That is, the motor load amount is measured while the detection tool is not affected by movement by another workpiece or tool post, and the maximum and minimum values of the motor load amount are calculated.

모터부하량의 최대ㆍ최소값이 산정되면 이 평균값에 사용자가 임의로 정한 소정의 값(α)을 가감하여 허용 최대ㆍ최소모터부하량값이 자동적으로 입력되는데, α의 값은 반복적인 테스트에 의해 얻어진 소정의 값이 미리 정해진다. 이때, α의 값을 비교적 많이 책정하게 되면 허용 최대ㆍ최소모터부하량의 값이 크게 되고 반대로 α의 값을 비교적 적게 책정하게 되면 허용 최대ㆍ최소모터부하량의 값이 작아지게 된다.When the maximum and minimum values of the motor loads are calculated, the allowable maximum and minimum motor load values are automatically input to the average value by adding or subtracting a predetermined value (α) arbitrarily determined by the user. The value of α is a predetermined value obtained by repeated tests. The value is predetermined. At this time, if the value of α is set relatively large, the value of the allowable maximum / minimum motor load becomes large, whereas if the value of α is set relatively small, the value of the allowable maximum / minimum motor load becomes small.

이후 가공을 행하고 검출공구로서 절단검출을 행하게 되는데, 허용 최대ㆍ최소모터부하량의 값과 측정시 얻게 되는 모터부하량의 값을 비교하여 기계의 비상정지를 결정하게 된다. 만약, 측정시 얻어지는 모터부하량의 값이 허용최대모터부하량의 값보다 작고 허용최소모터부하량의 값보다 크다면 정상적인 절단이 이루어져 검출공구에 공작물이 검출되지 않았음을 의미하며, 절단공구의 파손 등으로 인해 공작물의 절단이 정상적으로 이루어지지 않았다면 절단검출시 검출공구에 공작물이 검출될 수밖에 없어 모터부하량의 값이 증가될 수밖에 없다.After that, processing and cutting detection are performed as a detection tool. The emergency stop of the machine is determined by comparing the value of the allowable maximum and minimum motor load with the value of the motor load obtained during measurement. If the value of the motor load obtained during the measurement is smaller than the maximum allowable motor load value and larger than the minimum allowable motor load value, it means that a normal cutting is made and no workpiece is detected in the detection tool. Therefore, if the cutting of the workpiece is not made normally, the workpiece is detected in the detection tool during cutting detection, and the value of the motor load is inevitably increased.

따라서, 공작물의 절단이 정상적으로 이루어지지 않았을 경우 측정된 모터부하량의 값은 허용최대모터부하량의 값보다 크게 되고 서보모터제어부에 비상정지신호를 보내어 기계를 비상정지시키게 된다.Therefore, when the workpiece is not cut normally, the value of the measured motor load is greater than the maximum allowable motor load and the emergency stop signal is sent to the servo motor controller to emergency stop the machine.

만약, 공작물의 절단이 완료되지 않아 검출공구와 공작물이 부딪혀서 검출공구가 파손될 위험이 있으므로 검출공구의 시작점과 끝점의 이송속도는 공작물의 재질에 따라 결정하는데 비교적 경도가 낮은 공작물은 검출공구의 이송속도가 빨라도 무방하지만 비교적 경도가 높은 공작물의 경우에는 검출공구의 이송속도가 늦어야만 상기 검출공구의 파손을 방지할 수 있다.If cutting of the workpiece is not completed and the detection tool and the workpiece collide, the detection tool may be damaged. In the case of a workpiece having a relatively high hardness, the feed rate of the detection tool must be slow to prevent damage to the detection tool.

도 2는 디스플레이 화면의 예시도로서, 검출공구번호(11), 검출공구 x축 형상보정값(12), 검출공구 y축 형상보정값(13), 검출시작점(14), 검출끝점(15), 무부하 이송횟수(16), 디스플레이부분(20), 무부하시험완료창(21), 무부하시험 카운터 값(22), 무부하시험 최소전류치(23), 무부하시험 최대전류치(24)이다.2 is an exemplary view of a display screen, the detection tool number 11, the detection tool x-axis shape correction value 12, the detection tool y-axis shape correction value 13, the detection start point 14, the detection end point 15 , No-load transfer count 16, display portion 20, no-load test completion window 21, no-load test counter value 22, no-load test minimum current value 23, no-load test maximum current value 24.

여기서, 검출공구번호는 검출할 공구를 지정하는 번호이며, 검출공구 x축 형상보정값(12)은 공구대에 끼워진 공구의 크기에 따라 x축의 좌표점을 보정하는 것이며, 검출공구 y축 형상보정값은 공구대에 끼워진 공구의 크기에 따라 y축의 좌표점을 보정하는 것이다.Here, the detection tool number is a number designating a tool to be detected, the detection tool x-axis shape correction value 12 is to correct the coordinate point of the x-axis according to the size of the tool fitted to the tool post, and the detection tool y-axis shape correction The value is to calibrate the coordinate point on the y-axis according to the size of the tool fitted to the tool bar.

상기 검출시작점(14)은 검출을 시작할 지점이고, 검출끝점(15)은 검출을 마칠 지점이다.The detection start point 14 is a point to start detection, and the detection end point 15 is a point to end detection.

무부하 이송횟수(16)는 검출공구에 다른 물체가 닫지 않은 상태 즉, 무부하 상태의 이송횟수를 말하며, 무부하시험완료창(21)은 무부하시험의 완료여부를 나타낸다. 무부하시험 카운터값(22)은 무부하시험의 현재진행횟수를 나타내고, 무부하시험 최소전류치(23)와 최대전류치(24)는 무부하시험에서 나타나는 전류값이다. The no-load transfer frequency 16 refers to a state where no other object is closed to the detection tool, that is, the transfer frequency in the no-load state, and the no-load test completion window 21 indicates whether the no-load test is completed. The no-load test counter value 22 indicates the current number of progresses of the no-load test, and the no-load test minimum current value 23 and the maximum current value 24 are current values shown in the no-load test.

상술한 실시예에서는 절단공구 이외의 공구를 검출공구로 사용하였으나, 경우에 따라서는 검출공구를 공구로 한정하지 않고 별도의 검출부재를 공구대에 장착하여 검출공구로 사용할 수도 있다.
즉, 상기 검출부재는 공작물의 가공에 사용되지 않는 파손된 공구나 일반적인 바 형태의 막대 중에서 공구대에 척킹이 가능한 어느 것을 사용하여도 무방하다. 예를 들어 파손된 드릴, 리이머, 바이트 등을 사용할 수 있다. 그러나, 다른 공구와 공구대 및 공작물과의 간섭이 없는 형태의 것으로서 보통 공구의 크기 정도인 것을 사용하는 것이 더욱 바람직하다.In the above-described embodiment, tools other than the cutting tool are used as the detection tool, but in some cases, the detection tool may be used as a detection tool by attaching a separate detection member to the tool post without limiting the detection tool to the tool.
That is, the detection member may use any of the broken tools that are not used for the processing of the workpiece, or any rod that can be chucked to the tool post from a bar of a general bar shape. For example, a broken drill, a reamer, a bite, etc. can be used. However, it is more preferable to use one that is about the size of a tool, in the form of no interference with other tools, tool posts and workpieces.

또한, 상술한 실시예에서는 α의 값은 반복적인 테스트에 의해 얻어진 소정의 값이 미리 정해진다고 하였으나, 경우에 따라서는 α의 값을 사용자가 직접 임의로 입력할 수 있도록 형성할 수도 있다.In addition, in the above-described embodiment, the value of α is determined to be predetermined by a repetitive test. However, in some cases, the value of α may be formed so that a user may directly input the value of α.

이런 경우에는 α의 크기가 가감됨에 따라 기계의 민감성이 변경될 수 있다.In this case, the sensitivity of the machine may change as the size of α is added or subtracted.

상술한 바와 같이, 본 발명에 의한 자동선반의 공작물 절단검출방법은 별도의 부가장치가 필요없이 절단공구 이외의 공구를 검출공구로 선정하여 상기 검출공구로서 소재의 절단검출 여부를 확인할 수 있으며, 부가장치가 필요없이 소프트웨어로 절단검출을 행함으로서 제작비용을 절감시키고 보다 넓은 공간을 활용할 수 있는 자동선반을 제공한다.As described above, in the workpiece cutting detection method of the automatic lathe according to the present invention, a tool other than the cutting tool is selected as the detection tool without the need for an additional device, and the cutting tool can be checked whether the material is cut or not. Cut detection with software, without the need for a device, reduces manufacturing costs and provides an automated lathe that can utilize more space.

Claims (2)

자동선반의 공작물 절단검출방법에 있어서,In the workpiece cutting detection method of the automatic lathe, 절단공구 이외의 공구를 검출공구로 선정하고, 상기 검출공구의 절단검출 시작점과 끝점을 입력한 뒤, 상기 검출공구가 시작점에서 끝점까지 이동될 때 아무것도 검출되지 않는 무부하 상태의 모터부하량을 1회 이상 측정하고, 측정된 모터부하량의 최대ㆍ최소값에 사용자가 임의로 지정한 소정의 값(α)을 가감하여 허용 최대ㆍ최소모터부하량의 값이 자동으로 입력된 뒤, 가공시 측정된 모터부하량의 값이 허용최소모터부하량값과 허용최대모터부하량값의 범위를 벗어나면 기계를 비상정지하는 것이 특징인 자동선반의 공작물 절단검출방법Selecting a tool other than a cutting tool as a detection tool, inputting a cutting detection start point and an end point of the detection tool, and then performing at least one load of the motor load in which no load is detected when the detection tool is moved from the starting point to the end point. After the measurement, the maximum and minimum motor load values are automatically inputted by adding or subtracting a predetermined value (α) arbitrarily designated by the user to the maximum and minimum values of the measured motor load, and then the value of the measured motor load during machining is allowed. Method for cutting and cutting the workpiece of an automatic lathe characterized by the emergency stop of the machine if it is outside the range of the minimum motor load value and the allowable maximum motor load value 제 1항에 있어서,The method of claim 1, 상기 검출공구 대신 공작물의 가공을 수행하지는 않으며 검출만을 수행하기 위한 검출부재를 공구대에 장착하여 사용하는 것이 특징인 자동선반의 공작물 절단검출방법The workpiece cutting detection method of an automatic lathe characterized in that it does not perform machining of a workpiece instead of the detection tool, and uses a detection member mounted on a tool bar to perform detection only.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101884277B1 (en) * 2018-01-26 2018-08-01 (주)진승테크 2 head cutting system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0655286A (en) * 1992-08-10 1994-03-01 Niigata Techno Fuaburika Kk Device for confirming cutting of metal plate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0655286A (en) * 1992-08-10 1994-03-01 Niigata Techno Fuaburika Kk Device for confirming cutting of metal plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101884277B1 (en) * 2018-01-26 2018-08-01 (주)진승테크 2 head cutting system

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