Kinematic synthesis of a new 3D printing solution

Giberti, Hermes; Fiore, Enrico; Sbaglia, Luca

doi:10.1051/matecconf/20164504013

Cited by 8 publications

(4 citation statements)

References 9 publications

(8 reference statements)

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“…The machine used for the tests is shown in Figure 3 (a); it includes (i) a work table operated through parallel kinematics (linear delta), with controlled acceleration of actuators, (ii) an extrusion system having two distinct pistons, respectively for feeding (oriented at 45° to the vertical) and for extruding (vertical) [27]. The feeding cylinder is heated and internally equipped with packed steel balls.…”

Section: Feedstock Extrusion and Deposition Testsmentioning

confidence: 99%

Processability of SS316L powder - binder mixtures for vertical extrusion and deposition on table tests

2019

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Section: Feedstock Extrusion and Deposition Testsmentioning

confidence: 99%

Processability of SS316L powder - binder mixtures for vertical extrusion and deposition on table tests

2019

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“…Three translational and two rotational degrees of freedoms allow efficient deposition of material on given trajectories. A robot (as shown in Figure 8) having 5 degrees of freedom (DOF) was developed for movement of worktable for extrusion-based 3D printing [89][90][91]. Kinematic conations with 5 DOF allow to reduce significantly the typical staircase effect on the surface of 3D printed parts.…”

Section: Machines For Extrusion Based Additive Manufacturingmentioning

confidence: 99%

A comprehensive review of extrusion-based additive manufacturing processes for rapid production of metallic and ceramic parts

2019

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An extrusion based additive manufacturing (EAM) technique, recently became competitive for the rapid production of metals and ceramics components. This is made possible by extruding the metal or ceramic material in solid powder form, mixed with a binder, i.e. an expendable viscous fluid, which is removed from the part after 3D printing. The strength of these technologies relies on the large design freedom allowed by and by the cost efficiency advantage vs. alternative metal additive manufacturing processes based on high energy beams, e.g. laser/electron beam.EAM of metals and ceramics is not yet widespread, and the published scientific and technical literature is rapidly growing, but still less extensive than the literature on FDM of plastics or SLM of metals. This paper aims at filling this gap. Fused Deposition Modeling (FDM) and Powder Injection Molding (PIM) are identified as preceding or enabling technologies for EAM. This paper systematically reviews all the aspects of feedstock extrusion-based AM processes used for production of complex shaped parts. Then, the unique characteristics and advantages of the process are discussed, with respect to materials and process steps. The key process parameters are explained to illustrate the suitability of the process for diverse domains of applications.

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“…Figure 4 shows the main parameters involved in the kinematic definition of the robot. The optimization method is developed by the use of the Matlab R function ga [22]. Figure 5 shows the trend of the dimensional convergence of the final working space of the PKM during the ga optimisation process.…”

Section: Kinematic Studymentioning

confidence: 99%

Mechatronic Design for an Extrusion-Based Additive Manufacturing Machine

2017

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3D printers, especially in the implementation of innovative extrusion processes which do not have a long history of development, are often built by adapting mechanical designs, drives and controls previously developed for generic machine tools. This is done through a process of choice and integration which is based principally on empirical criteria and taking into account separately the different aspects and parameters. Hereafter, we present an integrated mechatronic approach which has been adopted to design from the scratch a machine to implement the innovative metal injection moulding (MIM) technology. Its extrusion rate involves the adaptation of the generated trajectories and consequently requires "ad hoc" designs, drives and numerical controls (NC) to enable non standard acceleration (and hence torque) setpoint curves. Overall, the project resulted in an acceptable workspace volume (depending on the number of degrees of freedom of the platform) and allows one to combine the extruder flow rate, the given accuracy and the required working speed (1 m/s). The system is currently used as a test bench for exploring and optimizing the parameter space of a new MIM process.

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Kinematic synthesis of a new 3D printing solution

Cited by 8 publications

References 9 publications

Processability of SS316L powder - binder mixtures for vertical extrusion and deposition on table tests

Processability of SS316L powder - binder mixtures for vertical extrusion and deposition on table tests

A comprehensive review of extrusion-based additive manufacturing processes for rapid production of metallic and ceramic parts

Mechatronic Design for an Extrusion-Based Additive Manufacturing Machine

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