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Design process and simulation testing of a shape memory alloy actuated robotic microgripper

Ashraf Fahmy Abdo Orcid Logo, H. Llewellyn-Evans, C. A. Griffiths, A. A. Fahmy, Christian Griffiths

Microsystem Technologies

Swansea University Authors: Ashraf Fahmy Abdo Orcid Logo, Christian Griffiths

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DOI (Published version): 10.1007/s00542-019-04599-6

Abstract

Microgrippers are commonly used for micromanipulation of micro-objects with dimensions from 1 to 100 µm and attain features of reliable accuracy, low cost, wide jaw aperture and variable applied force. This paper studies the design process, simulation, and testing of a microgripper which can manipul...

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Published in: Microsystem Technologies
ISSN: 0946-7076 1432-1858
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa51715
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first_indexed 2019-09-06T15:26:52Z
last_indexed 2019-09-06T15:26:52Z
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spelling 2019-09-06T13:24:02.1835476 v2 51715 2019-09-06 Design process and simulation testing of a shape memory alloy actuated robotic microgripper b952b837f8a8447055210d209892b427 0000-0003-1624-1725 Ashraf Fahmy Abdo Ashraf Fahmy Abdo true false 84c202c256a2950fbc52314df6ec4914 Christian Griffiths Christian Griffiths true false 2019-09-06 MECH Microgrippers are commonly used for micromanipulation of micro-objects with dimensions from 1 to 100 µm and attain features of reliable accuracy, low cost, wide jaw aperture and variable applied force. This paper studies the design process, simulation, and testing of a microgripper which can manipulate and assemble a platinum resistance temperature probe, made from a 25 µm diameter platinum wire, a 20 mm diameter tinned copper wire, and a printed circuit board type connector. Various microgripper structures and actuator types were researched and reviewed to determine the most suitable design for the required micromanipulation task. Operation tests using SolidWorks and ANSYS software were conducted to test a parallelogram structure with flexible single-notch hinges. The best suited material was found to be Aluminium alloy 7075-T6 as it was capable of producing a large jaw tip displacement of 0.7 mm without exceeding its tensile yield strength limit. A shape memory alloy was chosen as a choice of actuator to close the microgripper jaws. To ensure a repeatably accurate datum point, the final microgripper consisted of a fixed arm and a flexible arm. An optimisation process using ANSYS studied the hinge thickness and radius dimensions of the microgripper which improved its deflection whilst reducing the experienced stress. Journal Article Microsystem Technologies 0946-7076 1432-1858 31 12 2019 2019-12-31 10.1007/s00542-019-04599-6 COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University 2019-09-06T13:24:02.1835476 2019-09-06T13:16:38.7406166 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering Ashraf Fahmy Abdo 0000-0003-1624-1725 1 H. Llewellyn-Evans 2 C. A. Griffiths 3 A. A. Fahmy 4 Christian Griffiths 5 0051715-06092019132353.pdf Llewellyn-Evans2019.pdf 2019-09-06T13:23:53.1370000 Output 1422522 application/pdf Version of Record true 2019-09-06T00:00:00.0000000 false eng
title Design process and simulation testing of a shape memory alloy actuated robotic microgripper
spellingShingle Design process and simulation testing of a shape memory alloy actuated robotic microgripper
Ashraf Fahmy Abdo
Christian Griffiths
title_short Design process and simulation testing of a shape memory alloy actuated robotic microgripper
title_full Design process and simulation testing of a shape memory alloy actuated robotic microgripper
title_fullStr Design process and simulation testing of a shape memory alloy actuated robotic microgripper
title_full_unstemmed Design process and simulation testing of a shape memory alloy actuated robotic microgripper
title_sort Design process and simulation testing of a shape memory alloy actuated robotic microgripper
author_id_str_mv b952b837f8a8447055210d209892b427
84c202c256a2950fbc52314df6ec4914
author_id_fullname_str_mv b952b837f8a8447055210d209892b427_***_Ashraf Fahmy Abdo
84c202c256a2950fbc52314df6ec4914_***_Christian Griffiths
author Ashraf Fahmy Abdo
Christian Griffiths
author2 Ashraf Fahmy Abdo
H. Llewellyn-Evans
C. A. Griffiths
A. A. Fahmy
Christian Griffiths
format Journal article
container_title Microsystem Technologies
publishDate 2019
institution Swansea University
issn 0946-7076
1432-1858
doi_str_mv 10.1007/s00542-019-04599-6
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering
document_store_str 1
active_str 0
description Microgrippers are commonly used for micromanipulation of micro-objects with dimensions from 1 to 100 µm and attain features of reliable accuracy, low cost, wide jaw aperture and variable applied force. This paper studies the design process, simulation, and testing of a microgripper which can manipulate and assemble a platinum resistance temperature probe, made from a 25 µm diameter platinum wire, a 20 mm diameter tinned copper wire, and a printed circuit board type connector. Various microgripper structures and actuator types were researched and reviewed to determine the most suitable design for the required micromanipulation task. Operation tests using SolidWorks and ANSYS software were conducted to test a parallelogram structure with flexible single-notch hinges. The best suited material was found to be Aluminium alloy 7075-T6 as it was capable of producing a large jaw tip displacement of 0.7 mm without exceeding its tensile yield strength limit. A shape memory alloy was chosen as a choice of actuator to close the microgripper jaws. To ensure a repeatably accurate datum point, the final microgripper consisted of a fixed arm and a flexible arm. An optimisation process using ANSYS studied the hinge thickness and radius dimensions of the microgripper which improved its deflection whilst reducing the experienced stress.
published_date 2019-12-31T04:03:43Z
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score 11.012678

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