Efficiency of a cycloid reducer

Mihailidis, A.; Αθανασόπουλος, Ηλίας; Okkas, E.

doi:10.1533/9781782421955.794

Cited by 5 publications

(4 citation statements)

References 12 publications

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“…Peak efficiencies are larger than for strain wave gearboxes and closer to those of PGTs, but efficiency is highly dependent on operating conditions (Mihailidis et al, 2014 ) and both the no-load start torques and the latent power ratio are high, both similar to strain wave gearboxes.…”

Section: Review Of Transmission Technologies Currently Used In Industmentioning

confidence: 93%

Compact Gearboxes for Modern Robotics: A Review

et al. 2020

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On the eve of Human-Robot-Interaction (HRI) becoming customary in our lives, the performance of HRI robotic devices remains strongly conditioned by their gearboxes. In most industrial robots, two relatively unconventional transmission technologies-Harmonic Drives © and Cycloid Drives-are usually found, which are not so broadly used in other industries. Understanding the origin of this singularity provides valuable insights in the search for suitable, future robotic transmission technologies. In this paper we propose an assessment framework strongly conditioned by HRI applications, and we use it to review the performance of conventional and emerging robotic gearbox technologies, for which the design criterion is strongly shifted toward aspects like weight and efficiency. The framework proposes to use virtual power as a suitable way to assess the inherent limitations of a gearbox technologies to achieve high efficiencies. This paper complements the existing research dealing with the complex interaction between gearbox technologies and the actuators, with a new gearbox-centered perspective particularly focused on HRI applications.

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Section: Review Of Transmission Technologies Currently Used In Industmentioning

confidence: 93%

Compact Gearboxes for Modern Robotics: A Review

et al. 2020

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“…Tonoli exanimated the impact of the nonlubricating regime on the cycloid reducer efficiency, [10]. Mihailidis conducted an experimental lubrication test for a cycloid reducer in various setups, [11]. Blagojevic et al did experimental validation of the method for cycloid reducer efficiency determination which was presented by Kudrijavcev,[12].…”

Section: Introductionmentioning

confidence: 99%

Efficiency Analysis of New Two-Stage Cycloid Drive Concept

Matejić¹,

Blagojević²,

Kostić³

et al. 2020

Tribol. Ind.

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A new generation of planetary speed reducers has a lot of various reducer concepts. One of the new type are cycloid drives. A massive appearance of cycloid drive reducers is related to the second half of the 20 th century. This type of reducers represent a very interesting and attractive mechanical power transmission research field. The main reason for research interest is that cycloid reducers has a large potential in practice usage and they have very similar price related to conventional, planetary and other reducer types.Efficiency analysis of new two-stage cycloid drive concept is presented in this paper. The efficiency is determined based on losses due to friction in the bearing eccentric shaft surface, on the central gear rollers and the output rollers. New two-stage cycloid drive concept efficiency is done for 8 standard power values from 0.25kW to 15kW, with various input RPM and various transmission ratios. In order to evaluate the efficiency of new twostage cycloid drive concept, the comparison with existing solutions in practice has been made. At the end of the paper are given conclusions with possible directions of research continuation.

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“…Tonoli studied the influence of the non-lubricating regime on the cycloid reducer efficiency, [10]. Mihailidis performed an experimental lubrication test for a cyclod reducer, [11]. Blagojevic et al experimentally verified the method for determining cycloid reducer efficiency which was given by Kudrijavcev, [12].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Efficiency of a New Two Stage Cycloid Drive Concept

Matejić¹,

Blagojević²,

Kostić³

et al. 2019

PES

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Cycloid drives are part of a new generation of planetary gear trains. These reducers have massively appeared in the second half of the 20th century. Research on the subject of cycloid drives is an interesting subject in the field of mechanical power transmissions due to its wide use and price range which is similar to other types of conventional, planetary, and other types of reducers. This paper gives an analysis of efficiency of a new two stage cycloid drive concept. The efficiency analysis takes into consideration the losses due to friction in the bearing cam surface of the shaft, on the central gear rollers and the output rollers. The efficiency of the new concept of cycloid drive is given for different standard power values. In order to assess the efficiency of the new concept of the two stage cycloid drive a comparative analysis was conducted with a standard concept of two stage cycloid drive. The paper concludes with suggestions as well as possible directions for further research.

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Efficiency of a cycloid reducer

Cited by 5 publications

References 12 publications

Compact Gearboxes for Modern Robotics: A Review

Compact Gearboxes for Modern Robotics: A Review

Efficiency Analysis of New Two-Stage Cycloid Drive Concept

Analysis of Efficiency of a New Two Stage Cycloid Drive Concept

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