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Conference Papers Year : 2021

Strategies for Dealing with Problems in Robotised Unscrewing Operations

(1) , (1) , (1) , (1) , (1) , (1)
1
Jun Huang
  • Function : Author
  • PersonId : 1122644
Duc Truong Pham
  • Function : Author
  • PersonId : 1122645
Ruiya Li
  • Function : Author
  • PersonId : 1122646
Kaiwen Jiang
  • Function : Author
  • PersonId : 1122647
Dalong Lyu
  • Function : Author
  • PersonId : 1122648
Chunqian Ji
  • Function : Author
  • PersonId : 1122649

Abstract

Disassembly is the first step in a remanufacturing process chain with unscrewing being usually the most frequent task. In previously reported research in the authors’ laboratory, a new method has been developed for using robots to unfasten screws. Uncertainties and variability in the physical condition of screws induced by dirt, rust, or mechanical damage pose difficulties for such robotised unscrewing systems. There are three common failure modes: screwdriver missing screw head, screwdriver slipping on screw head and screw too tight to remove. This paper presents strategies to handle these failure modes, making the developed robotised method more robust and reliable. The strategies include conducting a second search and second unfastening trial as well as involving collaboration with a human operator. Tests were carried out to validate the proposed strategies. The results show that the strategies could deal with the failure modes, enabling 100% successful operation.
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Dates and versions

hal-03520389 , version 1 (11-01-2022)

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Attribution - CC BY 4.0

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Jun Huang, Duc Truong Pham, Ruiya Li, Kaiwen Jiang, Dalong Lyu, et al.. Strategies for Dealing with Problems in Robotised Unscrewing Operations. 9th International Precision Assembly Seminar (IPAS), Dec 2020, Held virtually, Unknown Region. pp.93-107, ⟨10.1007/978-3-030-72632-4_7⟩. ⟨hal-03520389⟩
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