A Study on Transmission Characteristics of Toothed Belt Drives : 3rd report, Transmission Error under a State of Applied Initial Tension, Experimental Results

In synchronous belt drives, a transmission error is generated due to resonance of the belt spanning the driving and driven pulleys when the transverse natural frequency of the belt approaches the meshing frequency of the belt and the pulley teeth. The behavior of this transmission error has been assumed to be dependent on the installation tension. In the present study, the influence of the installation tension on the transmission error in a synchronous belt drive under no transmitted load was experimentally investigated for the case in which first mode vibration due to resonance was induced in both the upper and lower spans. In addition, an analysis of the transmission error based on the experimental results was carried out. A method for reducing the error was also investigated. The transmission error contains two components: one with a period equal to the pitch of the pulley, and the other with a period of half the pulley pitch. Good agreement was found between the calculation and experimental results, thus confirming the validity of the analysis method. For a fixed pulley speed, the transmission error was largest when the installation tension was applied at a position where the displacement of the upper span was equal to that of the lower span. It was found that the transmission error could be reduced by pushing an idler lightly against the center of the span of the belt that was undergoing the largest displacement.

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A Study on Transmission Error in Timing Belt Drives (Effect of Production Error in Polychloroprene Rubber Belt)

Journal of Mechanical Design ◽

10.1115/1.2919253 ◽

1993 ◽

Vol 115 (4) ◽

pp. 1038-1043 ◽

Cited By ~ 20

Author(s):

M. Kagotani ◽

T. Koyama ◽

H. Ueda

Keyword(s):

Elongation Factor ◽

Transmission Error ◽

Experimental Results ◽

Initial Tension ◽

Cross Sectional ◽

Pitch Error ◽

Production Error ◽

Timing Belt ◽

Rubber Belt ◽

Production Errors

Experiments on a transmission error caused by production errors in polychloroprene rubber timing belts were performed under a quasistatic condition and an initial tension. The experimental results were compared with the computed results obtained using the measurement results of the production error in the belt. It was confirmed that the transmission error, having a period of one revolution of the belt, was mainly caused by a single pitch error, a change in cross-sectional area of the load carrying cords and a change in modulus of elasticity for one revolution of the belt. As the experimental results coincided quite well with the computed ones, it was concluded that the measurement methods for the single pitch error and the belt elongation factor, and the arrangement methods of these values used to compute the transmission error were valid. Further, it was found that the transmission error due to the production error in the belt lessens when the initial tension becomes smaller.

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A Study of Transmission Error in Timing Belt Drives: Effect of Production Error in Polychloroprene Rubber Belt

6th International Power Transmission and Gearing Conference: Advancing Power Transmission Into the 21st Century ◽

10.1115/detc1992-0062 ◽

1992 ◽

Author(s):

Masanori Kagotani ◽

Tomio Koyama ◽

Hiroyuki Ueda

Keyword(s):

Elongation Factor ◽

Static Condition ◽

Transmission Error ◽

Experimental Results ◽

Initial Tension ◽

Cross Sectional ◽

Pitch Error ◽

Production Error ◽

Timing Belt ◽

Rubber Belt

Abstract Experiments on a transmission error, having a period of one revolution of the belt in polychloroprene rubber timing belts, were performed under a quasi-static condition and an initial tension. The experimental results were compared with the computed results obtained using the measurement results of the production error in the belt. It was confirmed that the transmission error was mainly caused by a single pitch error, a change in cross-sectional area of the load carrying cords and a change in modulus of elasticity for one revolution of the belt. As the experimental results coincided quite well with the computed ones, it was concluded that the measurement methods for the single pitch error and the belt elongation factor, and the arrangement methods of these values used to compute the transmission error were right. Further, it was found that the transmission error due to the production error in the belt lessens when the initial tension becomes smaller.

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Load Distribution of Toothed Belt Drives under a State of Initial Tension

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C ◽

10.1299/kikaic.49.2212 ◽

1983 ◽

Vol 49 (448) ◽

pp. 2212-2219 ◽

Cited By ~ 2

Author(s):

Masanori KAGOTANI ◽

Tomio KOYAMA ◽

Hiroyuki UEDA ◽

Toshio AIDA ◽

Takeshi HOSHlRO

Keyword(s):

Load Distribution ◽

Initial Tension ◽

Belt Drives ◽

Toothed Belt

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Influence of Installation Tension on Transmission Error due to Resonance in a Synchronous Belt

Volume 2: Dynamics, Vibration and Control; Energy; Fluids Engineering; Micro and Nano Manufacturing ◽

10.1115/esda2014-20049 ◽

2014 ◽

Author(s):

Masanori Kagotani ◽

Hiroyuki Ueda

Keyword(s):

Natural Frequency ◽

Transmission Error ◽

Experimental Results ◽

The Other ◽

Belt Drive ◽

Analysis Method ◽

Belt Drives ◽

Mode Vibration ◽

Synchronous Belt Drive ◽

Good Agreement

In synchronous belt drives, transmission error is generated due to resonance of the belt spanning the driving and driven pulleys when the transverse natural frequency of the belt approaches the meshing frequency of the belt and the pulley teeth. The behavior of the transmission error caused by resonance has been assumed to be dependent on the installation tension. In the present study, the influence of installation tension on the transmission error in a synchronous belt drive was experimentally investigated for a case in which first mode vibration due to resonance was induced in both the upper and lower spans. In addition, an analysis of the transmission error based on the experimental results was carried out. A transmission error contains two components: one with a period equal to the pitch of the pulley, and the other with a period of half the pulley pitch. Good agreement was found between the calculation and experimental results, thus confirming the validity of the analysis method. For a fixed pulley speed, the transmission error was largest when the installation tension was applied at a position where the displacement of the upper span was equal to that of the lower span. When the installation tension was varied and the pulley speed was adjusted so that the belt experienced resonance, the transmission error decreased with an increase in installation tension.

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