Because of remarkable characteristics such as superior speeds and accelerations, high stiffness and good dynamic performance, parallel robots are being increasingly adjusted to different task requirements in the manufacturing field. Their parallel structures made by closed-loop kinematic chains are better suited to develop new curved and multidirectional fabrication strategies in Additive Manufacturing. Based on this application, the conceptual design and dimensional optimization of a new structure of the linear delta parallel robot for Additive Manufacturing (three-dimensional printing) is presented. The new structure uses an innovative concept of delta mechanism with single legs and rotational joints, which consists of 12 links (three single parallel legs), three prismatic joints, and 11 revolute joints. A particular feature of the proposed mechanism is that it contains a joint common to all the kinematic chains instead of a mobile platform. Quality function deployment is used as a methodology for conceptual design. Then the kinematics of the mechanism is described in detail, including mobility analysis, inverse and direct kinematics, and a study of dimensional optimization. A method of efficient optimization based on genetic algorithms is used to find the minimum dimensional parameters of the robot, considering the maximization of the useful workspace as main performance index. Finally, a prototype of the robot is developed to validate the design concepts and functionality of the machine.
PollardWL.Position controlling apparatus. US patent no. 2286571, 1942.
2.
StewartD.A platform with six degrees of freedom. Proc IMechE1965; 180(1): 371–386.
3.
ClavelR.Delta, a fast robot with parallel geometry. In: Proceedings of the 18th international symposium on industrial robots, Lausanne, 28–29 April 1988, pp.91–100. New York: Springer.
4.
PierrotFDauchezPFournierA.HEXA: a fast six-DOF fully-parallel robot. In: Proceedings of the 5th international conference on advanced robotics: robots in unstructured environments, vol. 2. Pisa, 19–22 June 1991, pp.1158–1163. New York: IEEE.
5.
PierrotFReynaudCFournierA.Delta: a simple and efficient parallel robot. Robotica1990; 8(2): 105–109.
6.
StockMMillerK.Optimal kinematic design of spatial parallel manipulators: application to linear delta robot. J Mech Des2003; 125(2): 292–301.
7.
NgoTDKashaniAImbalzanoGet al. Additive manufacturing (3D printing): a review of materials, methods, applications and challenges. Compos Part B Eng2018; 143: 172–196.
8.
RodriguezEBonnardRAlvaresA.Proposal of an advanced data model for STEP-NC compliant additive manufacturing. In: Proceedings of the 24th ABCM international congress of mechanical engineering, Curitiba, Brazil, 3–8 December 2017, pp.1–6. Curitiba, Brazil: ABCM.
9.
CrumpSSStratasysI. Apparatus and method for creating three-dimensional objects. US patent no. 5,121,329, 1992.
10.
AllenRJATraskRS. An experimental demonstration of effective curved layer fused filament fabrication utilising a parallel deposition robot. Addit Manuf2015; 8: 78–87.
11.
SongXPanYChenY.Development of a low-cost parallel kinematic machine for multidirectional additive manufacturing. J Manuf Sci Eng2015; 137(2): 21005.
12.
YeWFangYGuoS.Design and analysis of a reconfigurable parallel mechanism for multidirectional additive manufacturing. Mech Mach Theor2017; 112: 307–326.
13.
JinYDuJHeYet al. Modeling and process planning for curved layer fused deposition. Int J Adv Manuf Technol2017; 91(1–4): 273–285.
14.
SingamneniSRoychoudhuryADiegelOet al. Modeling and evaluation of curved layer fused deposition. J Mater Proces Technol2012; 212(1): 27–35.
15.
AlvaresAJGascaEARJaimesCIR. Development of the linear delta robot for additive manufacturing. In: 2018 5th international conference on control, decision and information technologies (CoDIT), Thessaloniki, 10–13 April 2018, pp.187–192. New York: IEEE.
BoudreauRGosselinCM.The synthesis of planar parallel manipulators with a genetic algorithm. J Mech Des1999; 121(4): 533–537.
18.
LiuXJWangJOhKKet al. A new approach to the design of a delta robot with a desired workspace. J Intel Robot Syst2004; 39(2): 209–225.
19.
LaribiMARomdhaneLZeghloulS.Analysis and dimensional synthesis of the DELTA robot for a prescribed workspace. Mech Mach Theor2007; 42(7): 859–870.
20.
KelaiaiaRCompanyOZaatriA.Multiobjective optimization of a linear delta parallel robot. Mech Mach Theor2012; 50: 159–178.
21.
KosinskaAGalickiMKedziorK.Designing and optimization of parameters of delta-4 parallel manipulator for a given workspace. J Robot Syst2003; 20(9): 539–548.
22.
AffiZRomdhaneLMaalejA.Dimensional synthesis of a 3-translational-{DOF} in-parallel manipulator for a desired workspace. Eur J Mech A Solid2004; 23(2): 311–324.
23.
YuanQJiSWangZet al. Optimal design of the linear delta robot for prescribed cuboids dextrous workspace based on performance chart. In: ROCOM’08 proceedings of the 8th WSEAS international conference on robotics, control and manufacturing technology, Hangzhou, China, 6–8 April 2008, pp.35–41. New York: ACM.
24.
CourteilleEDeblaiseDMaurineP. Design optimization of a Delta-like parallel robot through global stiffness performance evaluation. In: 2009 IEEE/RSJ international conference on intelligent robots and systems, St. Louis, MO, 10–15 October, pp.5159–5166. New York: IEEE.
25.
ZhangLMeiJZhaoXet al. Dimensional synthesis of the Delta robot using transmission angle constraints. Robotica2012; 30(3): 343–349.
26.
ZhaoY.Dimensional synthesis of a three translational degrees of freedom parallel robot while considering kinematic anisotropic property. Robot Comput Integrat Manuf2013; 29(1): 169–179.
27.
FioreESbagliaLMilanoP.Dimensional synthesis of a 5-DOF parallel kinematic manipulator for a 3D printer. In: Proceedings of the 16th international conference on research and education in mechatronics, Bochum, 18–20 November 2015, pp.41–48. New York: IEEE.
28.
LiuGChenYXieZet al. GASQP optimization for the dimensional synthesis of a delta mechanism based haptic device design. Robotics Comput Integrat Manuf2018; 51: 73–84.
29.
HuangTLiZLiMet al. Conceptual design and dimensional synthesis of a novel 2-DOF translational parallel robot for pick-and-place operations. J Mech Des2004; 126(3): 449–455.
30.
StanSDManicMMtieVet al. Evolutionary approach to optimal design of 3 DOF translation exoskeleton and medical parallel robots. In: Proceedings of the 2008 conference on human system interaction, HSI 2008, Krakow, 25–27 May 2015, pp.720–725. New York: IEEE.
31.
Mohan RaoNMallikarjuna RaoK. Dimensional synthesis of a spatial 3-RPS parallel manipulator for a prescribed range of motion of spherical joints. Mech Mach Theor2009; 44(2): 477–486.
32.
HuangMZ.Design of a planar parallel robot for optimal workspace and dexterity. Int J Adv Robot Syst2011; 8(4): 49.
33.
DragosAMariusPLucianMet al. Determining the workspace of a robot with Delta 3D parallel structure. J Eng Stud Res2012; 18(4): 20–24.
34.
HernandezAIbarrecheJIPetuyaVet al. Structural synthesis of 3-DoF spatial fully parallel manipulators. Int J Adv Robot Syst2014; 11(7): 101.
35.
NiYWuNZhongXet al. Dimensional synthesis of a 3-DOF parallel manipulator with full circle rotation. Chinese J Mech Eng2015; 28(4): 830–840.
36.
RussoMHerreroSAltuzarraOet al. Kinematic analysis and multi-objective optimization of a 3-UPR parallel mechanism for a robotic leg. Mech Mach Theor2018; 120: 192–202.
37.
RodriguezERiano JaimesCIAlvaresA.Projeto Mecatrônico de um Robô com Cinemática Paralela Delta Linear para Manufatura Aditiva. In: Proceedings of the Anais do IX Congresso Brasileiro de Engenharia de Fabricação, Curitiba, Brazil, January 2014, pp.1–6. Curitiba, Brazil: ABCM.
38.
SørensenCGJørgensenRNMaagaardJet al. Conceptual and user-centric design guidelines for a plant nursing robot. Biosyst Eng2010; 105(1): 119–129.
39.
RiañoCPeñaCSánchez AcevedoHG.Aplicación de técnicas de desenvolvimiento de producto para el desarrollo de un robot antropomórfico. Revista UIS Ingenierías2017; 17(1): 21–33.
40.
SahaHParhiDR.Conceptual design of an underwater robot. In: Proceedings of the 2015 international conference on man and machine interfacing (MAMI), Bhubaneswar, India, 17–19 December 2015, pp.1–6. New York: IEEE.
41.
PertuzSPenaCRianoC.RoboTender. In: Proceedings of the 2014 III international congress of engineering mechatronics and automation (CIIMA), Cartagena, Colombia, 22–24 October 2014, pp.1–5. New York: IEEE.
42.
Rodríguez GascaEACortés TorresEDJPeña CortésCA.QFD methodology applied on development of a 3D Printer. Rev Colombiana Tecnologias Avanzada2017; 2(28): 47–54.
