• 제목/요약/키워드: Driving Gear

검색결과 293건 처리시간 0.048초

전달오차와 백래쉬에 의한 기어 구동계의 비선형 동특성 해석 (Nonlinear Dynamic Analysis of Gear Driving System due to Transmission Error and Backlash)

  • 최연선;이봉현;신용호
    • 한국자동차공학회논문집
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    • 제5권1호
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    • pp.69-78
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    • 1997
  • Main sources of the vibration in gear driving system are transmission error and backlash. Transmission error is the difference of the rotation between driving and driven gear due to tooth deformation and profile error. Vibro-impacts induced by backlash between meshing gears lead to excessive vibration and noise in many geared rotation systems. Nonlinear dynamic characteristics of the gear driving system due to transmi- ssion error and backlash are investigated. Transmission error is calculated for spur gear. Nonlinear equation of motion for the gear driving system is developed with the calculated transmission error and backlash. Numerical analysis of the equation and the experimental results show the existence of meshing frequency, superharmonic compon- ents. Instability of the gear driving motion is found on the basis of Mathieu equation. Rattle vibration due to backlash is also discussed on the basis if nonlinear jump phenomenon.

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전동차용 DRIVING GEAR UNIT의 윤활유량 선정에 관한 연구 (Study on Flow Lubrication Selection of Driving Gear Unit for EMU)

  • 김경한;이태훈;김학수;서영진;고형근
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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    • pp.132-137
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    • 2011
  • 철도차량의 고속화, 경량화와 함께 승객의 안전성을 보다 더 높이기 위한 많은 연구가 진행 되고 있다. 철도차량의 안전성을 높이기 위해서는 주행성능을 안정시키는 것이 무엇보다 중요하며, 드라이빙기어 내부의 윤활유량을 최적화하는 것은 주행성능 확보에 필수적이다. 본 연구에서는 전동차용 Driving Gear Unit의 회전 방향에 따라 저속 Gear 치면을 통해 Splash 되는 드라이빙기어 Casing내의 윤활유 유동 변화를 ANASYS CFD 프로그램과 전산유체해석 기법을 사용하여 구현 하였으며, 해석 내역을 토대로 유사 구동 조건에 대한 무부하 실증 시험을 실시하여 해석의 적합성 및 윤활유량 선정과 드라이빙기어의 안전성에 대해 고찰하였다.

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차량용 윈도우 모터를 적용한 감속기 일체형 구동부 개발 (Development of Speed Reducer Integrated Driving system Apply to Vehicle Window Motor)

  • 염광욱;함성훈
    • 동력기계공학회지
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    • 제20권1호
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    • pp.57-62
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    • 2016
  • In this study, design the core part of the driving of the robot. The power of the driving is window motor for automobiles obtained by using a method of directly to the motor shaft of the worm gear type. The decelerator consists of a worm gear to receive power from the motor shaft, Helical gear contact to worm gear, a pinion gear to be connected in line with the helical gear, and an output shaft to be engaged to the pinion gear. Drive system by using the power from the motor shaft based on the deceleration gear designed by the gear ratio set by the gear teeth increases the torque.

전륜구동 전기자동차의 기어비 변경에 따른 구동 특징 민감도 분석 (Sensitivity Analysis on Driving Characteristics According to Change in Gear Ratio of a Front Wheel Drive Electric Vehicle)

  • 손영갑;김정민
    • 한국기계가공학회지
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    • 제21권9호
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    • pp.50-55
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    • 2022
  • Acceleration performance, maximum velocity, urban driving energy consumption, and high-way driving energy consumption are important characteristics of electric vehicle driving. This study analyzes the effect of a gear ratio on these characteristics for a front wheel drive electric vehicle. The normalized sensitivity metric is used to compare the sensitivity of these scaled characteristics to the changes in the gear ratio. The sensitivity analysis results show that the normalized values are 0.95 for maximum velocity, 0.91 for acceleration performance, 0.51 for urban driving energy consumption, and 0.24 for high-way driving energy consumption. Therefore, the maximum velocity was affected the most by the changes in the gear ratio. These results can be used to determine the gear ratio of a front wheel drive electric vehicle to optimize the driving characteristics simultaneously.

독자모델 감속구동장치 최적유량 선정에 관한 연구 (Determination of Optimal Lubricant Quantity for Driving Gear Unit of Unique Model)

  • 김용기;차수덕;김종연;이민수
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2005년도 춘계학술대회 논문집
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    • pp.225-230
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    • 2005
  • This paper describes determination of optimal lubricant quantity for driving gear unit. The purpose of selecting optimal lubricant quantity is to evaluate durability of driving gear unit. Lubricant quantity of driving gear unit is important factor affecting durability. The determination methode of lubricant quantity evaluation is used calculation necessary lubricant quantity first, then selection of optimal oil quantity as a base for moving of oil temperature according to changing oil quantity.

정렬불량에 의한 기어구동계 비선형 해석 (Nonlinear Analysis of Gear Driving System due to Misalignment)

  • Lee, B. H.;Park, Y. S.
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2002년도 추계학술대회논문초록집
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    • pp.311.2-311
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    • 2002
  • Even through the problem of misalignment is of great importance, not much work has been reported in the literature on the effect of misalignment on the vibrations of the gear-bearing systems. Therefore, the nonlinear dynamic characteristics of the gear driving system due to misalignment are investigated in this work. Transmission error for helical gear and bearing nonlinear stiffness is calculated. (omitted)

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치형수정된 기어구동계의 비선형 동특성 해석 (Nonlinear Dynamic Characteristics of Gear Driving System with Tooth Modification)

  • 조윤수;최연선
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2002년도 추계학술대회논문집
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    • pp.25-30
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    • 2002
  • To reduce the vibration of a gear driving system, the modification of gear tooth from the orignal involute gear profile is usually done in gear manufacturers. The quantity of tooth modification has been decided on the basis of the interference between two gear teeth during gear meshing and the elastic deformation due to loading. However, the dynamic characteristics with tooth modification has to be investigated to avoid the instability to the variation of gear meshing stiffness and the nonlinearity due to gear backlash which results in sub- or super-harmonics in its responses. This research shows the dynamic characteristics with various tooth modifications in its type and quantity.

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치형수정된 기어구동계의 비선형 동특성 해석 (Nonlinear Dynamic Characteristics of Gear Driving System with Tooth Modification)

  • 조윤수;최연선
    • 한국소음진동공학회논문집
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    • 제13권9호
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    • pp.688-693
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    • 2003
  • To reduce the vibration of a gear driving system. the modification of gear tooth from the orignal involute gear profile is usually done in gear manufacturers. The quantity of tooth modification has been decided on the basis of the interference between two gear teeth during gear meshing and the elastic deformation due to loading. However. the dynamic characteristics with tooth modification has to be investigated to avoid the instability to the variation of gear meshing stiffness and the nonlinearity due to gear backlash which results in sub- or super-harmonics in its responses. This research shows the dynamic characteristics with various tooth modifications in its type and quantity.

Development of Electric Motion Wheel Chair Driving System using Planetary Gear Device

  • Ham, Seong-Hun;Youm, Kwang-Wook
    • International journal of advanced smart convergence
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    • 제9권3호
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    • pp.199-206
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    • 2020
  • A wheelchair is an essential rehabilitation assistant device for the movement of paraplegia patients and generally paralyzed patients who cannot walk normally. In particular, the applicability of the manual/motorized wheelchair is gradually increasing. Until now, decelerators using belt, chain and worm gears, etc have been widely used. However, a decelerator takes a large space although it is a simple device and thus is not ideal for the driving part of manual/motorized wheelchair. For these reasons, in this study we developed a driving part producing a large driving force through a decelerator using planetary gears rather than conventional worm gear-based decelerator. We designed the tooth profile of the planetary gears for decelerator using Kisssoft program, In addition, we designed the driving part so as to apply it to the wheels of conventional wheelchairs, and then optimized the mechanism for the principles of manual/motorized transposition of the driving part and the operational principles. Based on the results of this study, we finally designed and manufactured a driving part for wheelchair decelerator in the form of planetary gears with 1 sun gear, 2 planetary gears and 1 ring gear.

치형수정된 기어구동계의 비선형 동특성 해석 (Nonlinear Dynamic Characteristics of Gear Driving System with Tooth Modification)

  • Cho, Yun-Su;Park, Yeon-Sun
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2002년도 추계학술대회논문초록집
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    • pp.311.1-311
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    • 2002
  • To reduce the vibration of a gear driving system, the modification of gear tooth from the orignal involute gear profile is usually done in gear manufacturers. The quantity of the tooth modification has been decided on the basis of the intereference between two gear teeth during gear meshing and the elastic deformation due to loading. (omitted)

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