Pitting Life of CRP System

Kim, Chang‐Hyun; Nam, Hyuk; Kwon, Soonman

doi:10.7735/ksmte.2012.21.2.283

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…이를 위해 최근 제안된 RGM (roller gear mechanism) [1] 기반의 RTG (roller track gear) 시스 템 [2] 은 Fig. 1의 선형 이송 시스템인 CRP 시스템 [3][4][5] 과 회전 이송 시스템인 CRG [6] 및 RPG 시스템 [7] 의 캠 기어들의 일부 또는 전체 를 조합하여 캠 기어 트랙을 구성하고 핀 또는 롤러 치형을 가지는 런너(runner)를 통해 구동함으로써 기존의 랙-피니언 시스템 [8,9] …”

Section: 서 론 최근 생산성 향상 및 효율적인 작업공정을 위해 직선 이송은 물 론 방향 전환 및 선회 운동의 복합적인unclassified

Roller Track Gear System Design based on Roller Gear Mechanism

Kwon¹

2014

Journal of manufacturing engineering & technology

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ARTICLE INFO ABSTRACTArticle history:In recent years, RGM(roller gear mechanism) systems, wherein one of the gears of a meshing gear pair is replaced with pins or rollers, have been reintroduced, which is a consequence of, and therefore a reflection of, the rapid advances made in manufacturing technology. Three RTG(roller track gear) systems for arbitrary path transportation (e.g., L-, O-, U-, and S-shaped tracks) were constructed using two out of three RGM systems, namely, the CRP(cam rack pinion), CRG(cam ring gear), and RPG(roller pinion gear) systems, and are introduced in this paper. We also present three ways to prevent the intersection and non-contact phenomena at the teeth in the vicinity of the conversion point between two joined RGM systems.

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Section: 서 론 최근 생산성 향상 및 효율적인 작업공정을 위해 직선 이송은 물 론 방향 전환 및 선회 운동의 복합적인unclassified

Roller Track Gear System Design based on Roller Gear Mechanism

Kwon¹

2014

Journal of manufacturing engineering & technology

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“…And the bending strength geometric coefficient of the roller-rack and pinion system is determined, which provides a new solution for solving the bending strength problem of this system [ 20 ]. To explore the influence of load stress factors on gear noise and gear surface fatigue limits, the accurate tooth profile and the non-undercut condition satisfying the required performance is proposed with the introduction of the tooth profile shift coefficient [ 21 , 22 ]. The above researches provide a theoretical reference for MRGTR analysis and stability of MSEMT.…”

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Influence of Toothed Rail Parameters on Impact Vibration Meshing of Mountainous Self-Propelled Electric Monorail Transporter

Liu

Hong

2020

Sensors

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In order to reduce the vibration of mountain self-propelled electric monorail transporters (MSEMT) caused by the impact of the meshing of roller gear with toothed rail (MRGTR), and to improve the stability and safety of monorail transporters, this paper theoretically analyzed the MRGTR mechanism of toothed monorail transporters as well as established the MSEMT displacement model and its instantaneous velocity model. The vibration signals of MSEMT with four different parameters of toothed rail were collected by the acceleration sensor and signal acquisition system. The signals were analyzed by the Hilbert envelope demodulation method to investigate the influence of toothed rail parameters on meshing impact vibration. Moreover, taking the vibration acceleration amplitude of MSEMT and the vibration attenuation time of meshing impact as evaluation indexes, a test based on the three-factor and two-level orthogonal test was engaged with factors of toothed rail pressure angle, the ratio of L—the chord length of two adjacent roller centers of a roller gear—and rack pitch p (wheel-tooth ratio) and the load mass of the MSEMT. It showed that the impact of MRGTR was the main excitation source of the vibration of MSEMT. The pressure angle and wheel-tooth ratio both have a significant impact on the smooth operation of MSEMT, the latter to a greater extent. So did the interaction between wheel-tooth ratio and load mass. The amplitude of the characteristic frequency of the MSEMT decreased with the growth of the pressure angle. When the wheel-tooth ratio was cosα, the number of the characteristic frequency was less than that when it was 1, and the amplitude became smaller too. When the pressure angle was 15, the amplitude of vibration acceleration characteristic frequency decreased as a consequence of load mass increasing. At the pressure angle of 25, the amplitude of characteristic frequency decreased with the increase of load mass if the wheel-tooth ratio was 1, and the opposite result occurs in the case when the wheel-tooth ratio was cosα. This paper provides a theoretical basis and reference for improving the impact vibration of MRGTR and optimizing the design of the toothed rail.

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Linear Drive Systems using Roller Gear Mechanism

Kim¹,

Nam²,

Kwon

2012

Journal of manufacturing engineering & technology

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This paper considers two linear drive systems using roller gear mechanism(RGM), one is the RRP(roller rack pinion) system that consists of a roller rack and a cam pinion, the other is the CRP(cam rack pinion) system that consists of a cam rack and a roller pinion. Through the comparison of contact forces and load-stress factors between two linear drive systems, it reveals that the RRP system is superior to the CRP system in the aspect of the bending strength, while the CRP system has higher contact fatigue resistance than that of the RRP system.

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Pitting Life of CRP System

Cited by 4 publications

References 4 publications

Roller Track Gear System Design based on Roller Gear Mechanism

Roller Track Gear System Design based on Roller Gear Mechanism

Influence of Toothed Rail Parameters on Impact Vibration Meshing of Mountainous Self-Propelled Electric Monorail Transporter

Linear Drive Systems using Roller Gear Mechanism

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