• Title/Summary/Keyword: Measuring tools

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An Intelligent Measuring and Inspection System for NC Machine Tools (NC 공작기계용 지능형 측정 및 검사시스템)

  • 김경돈
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.6 no.2
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    • pp.83-91
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    • 1997
  • Interactive measuring Part Program Generating Tools (IMPPGT) realized on the FANUC 15MA using touch trigger probes and interactive macro functions of the CNC were developed for intelligent measuring and inspection systems on the machine tools. Machine tools. Menu driven measuring and inspection functions of the IMPPGT were studied and implemented on the CNC through the macro executor and ROM writer. In order to automate measurement and inspection procedures in machine shops, measuring G Code system was also proposed. Using the developed measuring G Code system on the machine tool, untended measurement and inspection operation was able to be realized in FMS lines.

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An Intelligent Measuring and inspection System On the Machine Tools (온더머신 지능형 측정 및 검사시스템)

  • 김경돈
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 1996.10a
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    • pp.101-106
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    • 1996
  • Interactive Measuring part Program Generating Tools (IMPPGT) realized on the FANUC 15MA using touch trigger probes and interactive macro functions os the CNC were developed for an intelligent measuring and inspection systems on the machine tools. Menu driven measuring and inspection functions of the IMPPGT were studied and implemented on the CNC through the macro executer and ROM writer. In order to automate measurement and inspection procedures in machine shops measuring G Code system was also proposed. Using the developed measuring G Code system on the machine tool untended measurement and inspection operation was able to be realized in FMS lines.

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An interactive measuring and inspection system for NC machine tools (NC 공작기계용 대화형 측정 및 검사시스템)

  • 김경돈;정성종
    • 제어로봇시스템학회:학술대회논문집
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    • 1997.10a
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    • pp.1399-1402
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    • 1997
  • Design methodology of Interactuve Measuring Part Program Generating Tools(IMPPGT) realized on the FANUC 15MA using touch trigger probes and interactive macro functions of the CNC was described in this paper. Measuring G codes have been designed according to probe ste up, basic and applied inspection items by using measuring arguments. Menu driven measuring and inspection functions of the IMPPGT were studied and implemented on the CNC through the macro executor and ROM writer. Using the developed measuring G code system on the machine tool, untended measurement and inspection operation was able to be realized in precision FMS lines.

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Developement of Measuring Units of Space Motion Accuracy in Machining Center (Machining Center의 공간정도 측정장치의 개발)

  • Kim, Young Seuk;Namgung, Suk
    • Journal of the Korean Society for Precision Engineering
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    • v.12 no.2
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    • pp.37-47
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    • 1995
  • In recent years, it has been variously developed for testing the accuracy of circular motion of NC machine tools, for example Telescoping Ball Bar Method by Bryan, Circular test Method by Knapp and $r^{-{\theta} }$ Method by Tsutsumi etc., but these methods are all 2-dimentional measuring methods on plane. These simple methods of circular motion accuracy test of NC machine tools have been studied by many reserchers as above, but it is not yet settled in the code of measuring methods of motion errors of NC machine tools, because of errors of measuring units and sensors, and also especially the difficulties of centering of measuring units and the spindle of machining center. In this paper, in use of 2 rotary encoders and 1 magnetic type linear scale with resolution of 0.5 .mu. m, it has become possible for measuring of 3 dimentional space motion accuracy.

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Measurement of Motion Accuracy by Two-dimensional Probe on NC Machine Tools -2nd Report, Measurement of the Linear Motion Accuracy- (2차원 프로브에 의한 NC공작기계의 운동 정밀도 측정 -제2보 직선운동 정밀도 측정-)

  • JEON, Eon Chan;OYAMADA, Shigenori;TSUTSUMI, Masaomi;KAKUTA, Junichro
    • Journal of the Korean Society for Precision Engineering
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    • v.14 no.7
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    • pp.15-21
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    • 1997
  • This paper presented a linear motion accuracy by using two-dimensional probe with the master block and the square for NC machine tools. This measuring system could be measured motion error due to numerical control system. The results of measurement and simulation for motion error were similar, and so, this system had enough accuracy to measure a linear motion accuracy for NC machine tools. The experimental results are as follows. 1. This measuring system could be measured motion error due to mumerical control system. 2. The results of measurement and simulation for motion error were similar. 3. This measuring system had enough accuracy to measure a linear motion accuracy for NC machine tools.

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Organizartion of Measurin System of Circular Motion Accuracy of Machining Center (머시닝센터의 원운동정도 측정시스템의 구성)

  • 김영석;낭궁석
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1993.10a
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    • pp.305-311
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    • 1993
  • In recent years, it has been variously developed for testing the accuracy of circular motion of NC machine tools, for example Telescoping Ball Bar Method by Bryan,Circular Test Method by Knapp and r $_{- \theta}$ Mathod by Tsutsumi etc., but it is not yet settled in the code of measuring methods of motion errors of NC machine tools, because of errors of measuring units and sensors, and also especially the difficulties of centering of measuring units. In this paper, in use of magnetic type linear scale with resolution of 0.5 .mu. m and tick pulses come out from computer, it has become possible for detecting of linear displacement of radial errors and measuring of revolution angle of circular motion of NC machine tools.

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Design and Implementation of an On-the-Machine Measuring and Inspection Module (NC 공작기계상에서의 측정 및 검사모듈의 설계와 구현)

  • 김경돈;정성종
    • Journal of the Korean Society for Precision Engineering
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    • v.15 no.4
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    • pp.91-97
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    • 1998
  • Design methodology of Interactive Measuring Part Program Generating Tools(IMPPGT) realized on the FANUC 15MA using touch trigger probes and interactive macro functions of the CNC was described in this paper. Measuring G codes were designed according to geometric form, precision attributes, relations between parts, datum hierarchies, and relevant technological data by using measuring arguments. Menu driven measuring and inspection functions of the IMPPGT were studied and implemented on the CNC through the macro executor and ROM writer. Using the developed measuring G code system on the machine tool, untended measurement and inspection operation was able to be realized in precision FMS lines.

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Screening and Assessment Tools for Measuring Delirium in Patients with Cancer in Hospice and Palliative Care: A Systematic Review

  • Yang, Eun Jung;Hahm, Bong-Jin;Shim, Eun-Jung
    • Journal of Hospice and Palliative Care
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    • v.24 no.4
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    • pp.214-225
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    • 2021
  • Purpose: This study reviewed screening and assessment tools that are used to measure delirium in patients with cancer in hospice and palliative care settings and examined their psychometric properties. Methods: Four databases were searched for studies using related search terms (delirium, tools, palliative care, cancer, and others). The inclusion criteria were a) studies that included screening/assessment tools for measuring delirium in cancer patients receiving hospice/palliative care, and b) studies published in English or Korean. The exclusion criteria were a) studies that were conducted in an intensive care setting, and b) case studies, qualitative studies, systematic reviews, or meta-analyses. Results: Out of the 81 studies identified, only 10 examined the psychometric properties of tools for measuring delirium, and 8 tools were ultimately identified. The psychometric properties of the Memorial Delirium Assessment Scale (MDAS) were the most frequently examined (n=5), and the MDAS showed good reliability, concurrent validity, and diagnostic accuracy. The Delirium Rating Scale had good reliability and diagnostic accuracy. The Delirium Rating Scale-Revised 98 also showed good reliability and structural validity, but its diagnostic performance was not examined in hospice/palliative care settings. The Nursing Delirium Screening Scale showed relatively low diagnostic accuracy. Conclusion: The MDAS showed evidence of being a valid assessment tool for assessing delirium in patients with cancer in palliative care. Few studies examined the diagnostic performance of delirium tools. Therefore, further studies are needed to examine the diagnostic performance of screening/assessment tools for the optimal detection of delirium in patients with cancer in hospice/palliative care.

Measurement of motion accuracy by two-dimensional probe on NC machine tools -1st report, Measurement of the circular motion accuracy- (2차원 프로브에 의한 NC공작기계의 운동정밀도 측정 -제 1보 원호보간운동 정밀도 측정-)

  • JEON, Eon-Chan;OYAMADA, Shigenori;TSUTSUMI, Masaomi
    • Journal of the Korean Society for Precision Engineering
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    • v.13 no.3
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    • pp.56-62
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    • 1996
  • This paper presented a new measuring system to improve circular motion accuracy by using two-dimensonal probe and master ring for NC machine tools. This measuring system reduced the circular motion error conspicuously by eliminating the influence of the acceleration/deceleration range and compensating the friction force whose influences were significant while measuring the motion. Experimental results show that this system had enough accuracy to measure a circular motion for NC machine tools, compared with the circular test method and the r .theta. method.

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An Improvement of Positioning Accuracy for CNC Machine Tools (CNC 공작기계의 위치결정 정밀도 향상에 관한 연구)

  • JEON, Eon Chan;HIROTA, Yasuhiro;TSUTSUMI, Masaomi;NAMGUNG, Suk
    • Journal of the Korean Society for Precision Engineering
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    • v.11 no.6
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    • pp.5-11
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    • 1994
  • We have investigated the variation of dwell and warm-up time for effects of positioning accuracy of the CNC machine tools with an laser measuring system. Also, we strdied the effect of improvement of the positioning accuracy by variation of the temperature for hollow ball screw, which mostly used as drive mechanism of CNC machine tools. We dbtained the effectiveness of cooling effect of the new cooling system, compared with the conventional cooling system.

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