High Precision Reducers for Industrial Robots Driving 4th Industrial Revolution: State of Arts, Analysis, Design, Performance Evaluation and Perspective

Pham, Anh-Duc; Ahn, Hyeong-Joon

doi:10.1007/s40684-018-0058-x

Cited by 146 publications

(59 citation statements)

References 63 publications

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“…Kim et al proposed a real-time monitoring and diagnosis system based on AI and data that is applicable to manufacturing equipment [26]. Pham and Ahn investigated high-precision industrial robot parts applicable to smart factories [27]. However, the application of Fourth Industrial Revolution technology is still being pursued in a way that is suitable for large enterprises rather than SMEs [28] and still has many barriers to be applied to SMEs [29].…”

Section: Literature Reviewmentioning

confidence: 99%

Appropriate Smart Factory for SMEs: Concept, Application and Perspective

Jung

Kim

Lee

et al. 2020

Int. J. Precis. Eng. Manuf.

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In the manufacturing industry, the smart factory is considered the final stage of the Fourth Industrial Revolution. Manufacturing companies are pursuing breakthroughs by introducing various advanced technologies to ensure their competitiveness. However, it is difficult for small and medium-sized enterprises (SMEs) to adopt smart-factory technologies, owing to financial and technical burdens. This paper proposes a smart factory that can be applied technically and strategically to the introduction of a smart factory for SMEs. The concept of an ‘appropriate smart factory’ involves applying appropriate measures in terms of cost and scale with consideration of the situations faced by SMEs. The goal is to build a smart factory that has necessary functions (Essential) but can be easily operated (Simple) at a low cost (Affordable) and has compatibility (Interoperable). This paper presents technical application measures such as appropriate smart sensors, appropriate IoT (Internet of Things), and small data processing, along with the definition of an appropriate smart factory. In addition, a case study was examined where the quality inspection equipment for garment manufacturing SMEs was developed by applying the appropriate smart factory concept.

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Section: Literature Reviewmentioning

confidence: 99%

Appropriate Smart Factory for SMEs: Concept, Application and Perspective

Jung

Kim

Lee

et al. 2020

Int. J. Precis. Eng. Manuf.

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“…Many experts and scholars have made some progress with the performance detection of precision reducers [6,7]. Performance parameters of reducers generally include torsional rigidity, transmission error, backlash, lost motion, and transmission efficiency [8][9][10]. The primary variable in the definitions of these main parameters includes torque, which is time-dependent.…”

Section: Introductionmentioning

confidence: 99%

Torque Measurement of High‐Precision Reducer for Industrial Robot

Zhang

2021

Journal of Sensors

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Torque testing is crucial to improve the quality of high-precision reducers—the core component of industrial robots. Herein, a torque-measurement system for a novel vertical measuring instrument is designed. The distance from the torque transducers to the robot reducer is minimized to ensure the shortest measurement chain. The symmetrical system structure improves the overall rigidity, and error compensation can be performed easily. The characteristics of the torque measurement errors due to shaft bending and torsional deformations were also analyzed. A torque calibrator comprising two high-precision torque output systems was used to calibrate torque transducers in the measurement system. Reasonable and practical compensation models based on a backpropagation neural network were developed to accurately obtain the input and output torques of the reducer. As the torque-measurement precision of the reducer detector reached 0.1% over the entire torque range, the instrument can be used for accuracy measurement of the input and output torques of the robot reducer.

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“…Providing detailed insight on the operational properties and performances of different gearbox technologies, to guide educated selection is another option, following the tradition of works like Schempf and Yoerger ( 1993 ) or Rosenbauer ( 1995 ). Following this approach, Siciliano et al ( 2010 ), Li ( 2014 ), Scheinman et al ( 2016 ), and Pham and Ahn ( 2018 ) provide interesting overviews on high precision gearboxes for modern robotics. However, the technologies are not analyzed in sufficient detail to gain a good understanding of the complex mechanisms in which they affect the performance of the robotic task.…”

Section: Introductionmentioning

confidence: 99%

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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High Precision Reducers for Industrial Robots Driving 4th Industrial Revolution: State of Arts, Analysis, Design, Performance Evaluation and Perspective

Cited by 146 publications

References 63 publications

Appropriate Smart Factory for SMEs: Concept, Application and Perspective

Appropriate Smart Factory for SMEs: Concept, Application and Perspective

Torque Measurement of High‐Precision Reducer for Industrial Robot

Compact Gearboxes for Modern Robotics: A Review

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