• 제목/요약/키워드: Automated Gear Inspection

검색결과 6건 처리시간 0.025초

기어피치분석 및 공정관측을 위한 PC기반시스템 구축 (A PC-Based System for Gear Pitch Analysis and Monitoring in Gear Manufacturing Process)

  • 김성준;지용수
    • 품질경영학회지
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    • 제30권3호
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    • pp.111-119
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    • 2002
  • Gears are essential elements for mechanical power transmission. Geometric precision is the main factor for characterizing gear grade and qualify. Gear pitch is one of the crucial measurements, which is defined as a distance between two adjacent gear teeth. It is well-known that variability in gear pitches may causes wear-out and vibration noise. Therefore maintaining pitch errors at a low level plays a key role in assuring the gear quality to customers. This paper is concerned with a case study, which presents a computerized system for Inspecting pitch errors in a gear machining process. This system consists of a PC and window-based programs. Although the start and stop is manually accomplished, the process of measuring and analyzing pitch data is automatically conducted in this system. Our purpose lies in reducing inspection cost and time as well as Increasing test reliability. Its operation is briefly illustrated by example. Sometimes a strong autocorrelation is observed from pitch data. We also discuss a process monitoring scheme taking account of autocorrelations.

3차원 좌표측정기의 기어측정능력평가를 위한 실험적 연구 (A Study on the Evaluation of the Gear Measurement Capability of a 3 Dimensional Coordinate Measuring Machine)

  • 심창건;변재현
    • 산업공학
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    • 제12권2호
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    • pp.180-192
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    • 1999
  • A coordinate measuring machine (CMM) is a computer-controlled measuring device that uses a probe to obtain measurements on a manufactured part's surface. CMM's have been very popular over traditional hard gauges due to their flexibility, accuracy, and ease of automated inspection. This paper considers the use of a CMM for the inspection of gears. We compare the inspection capability of a CMM and that of a gear-specific measuring machine. The result of this paper may benefit gear manufacturing companies in their dimensional quality assurance activities, especially for special type gears and for large-scale gears which are not measurable by gear-specific measuring machines.

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기어날끝의 표면마무리에 대한 품질검사시스템 (An Automated System for Inspecting Surface Finishes of Gear Teeth)

  • 김성준;임준묵
    • 산업공학
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    • 제9권2호
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    • pp.105-117
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    • 1996
  • This paper presents an automated system for inspecting surface finish quality of gear teeth. The purpose of the presented system is to improve both efficiency and reliability of a gear inspection process with a lower cost. The system consists of two modules; one is for data collection and the other for data analysis. While and A/D converter is built in a PC to efficiently obtain digitized data, a window-based software for conducting quality tests is provided using VISUAL BASIC as well as C++. We successfully connect them with the existing gear tester. This system would be also useful for the gear quality improvement by means of a continuous data management.

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더블기어 자동 시각 검사 시스템 실계 및 구현 (Automated Visual Inspection System of Double Gear using Inspection System)

  • 이영교;김영포
    • 디지털산업정보학회논문지
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    • 제7권4호
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    • pp.81-88
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    • 2011
  • Mini Double Gears Frame is critical part of PDP and also produces couple hundred thousand every month. In the process of mass production, product inspection is very important process. Double Gear, one of the part of machine, was inspected by human eyes which caused mistakes and slow progress. To achieve the speed and accuracy the system was compensated by vision system which is inspecting automatically. The focus value is measured based on the fact that high contrast images have much high frequency edge information. High frequency term of the image is extracted using the high-pass filter and the sum of the high frequency term is used as the focus value. We used a Gaussian smoothing filter to reduce the noise and then measures the focus value using the modified Laplacian filter called a Sum modified Laplacian Focus values for the various lens positions are calculated and the position with the maximum focus value is decided as the focused position. The focus values calculated in various lens position showed the Gaussian distribution. We proposed a method to estimate the best focus position using the Gaussian curve fitting. Focus values of the uniform interval lens positions are calculated and the values are used to estimate the Gaussian distribution parameters to find the best focus position.

TQM과 6시그마 경영에 관한 고찰 - 서비스산업을 중심으로 (A Study on the TQM and 6 Sigma Management - Primarily on service industry -)

  • 김동훈;장영준
    • 품질경영학회지
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    • 제30권3호
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    • pp.120-138
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    • 2002
  • In order to carry out TQM and 6 Sigma management, it is the key elements to make clear a goal and a mission. Above all, we can succeed In achieving a dramatic change and a great outcome only when we make clear the method, incentives, organization and plans under the clear objective. In order to secure the competitiveness against the external challenge, it is essential to keep the several crucial factors such as CEO's will, the systematic process to measure and manage, monitoring to satisfy customer's needs and an aggressive development of TQM activity to encourage the endeavour of the relentless enhancement, and also a positive effort Is to be made for evaluating all quality culture like training experts internally by an outstanding training program under CEO's firm leadership. This study is carried out to understand that which features and factors of success can exist in a company culture if a company accepts a theoretical basis and concept, the general of TQM and 6 Sigma which are one of a management strategy, and carries out TQM and 6 Sigma for achieving improvement of quality and customer's satisfaction.

스플라인 기어부 결함의 와전류검사 신호처리에 관한 연구 (Study on Signal Processing in Eddy Current Testing for Defects in Spline Gear)

  • 이재호;박태성;박익근
    • 비파괴검사학회지
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    • 제36권3호
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    • pp.195-201
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    • 2016
  • 금속성부품의 자동화 생산라인 상에서 결함검사는 통상 시스템 가격이 합리적이고 고속검사가 가능한 와전류검사(ECT, eddy current testing) 기법이 많이 사용된다. 이러한 금속성 피검사체 가운데 특별히 스플라인 샤프트(spline shaft)의 스플라인 기어부(spline gear)와 같이 표면이 고르지 못한 피검사 대상에 대하여 ECT검사를 적용할 경우 주파수 분포도가 유사하면서 동시에 상대적으로 큰 표면신호로 인해 센서로부터 획득한 원신호와 결함에 의해 발생한 신호를 분리해내기가 어렵다. 이러한 스플라인 기어부의 결함신호 검출을 용이하게 하기 위해서는 주변 잡음신호에서 결함신호만을 구분해낼 수 있는 고차필터의 구현이 필수적이고 동시에 각 생산라인과 피검사체의 상황에 따라 필터의 통과대역을 조절할 수 있어야 한다. 이러한 통과대역 조절이 가능한 고차필터 구현을 위해 디지털 방식 중 하나인 IIR (infinite impulse filter) 필터에 의한 구현방안을 검토하고, 신호검출을 위해 시스템 레벨에서 설계요소들의 최적화를 통해 결함신호검출을 시도하였다.