Robot-Based Fiber Spray Process for Small Batch Production

Schmidt, Edgar; Winkelbauer, Jonas; Puchas, Georg; Henrich, Dominik; Krenkel, Walter

doi:10.1007/978-3-662-61755-7_27

Cited by 7 publications

(9 citation statements)

References 7 publications

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“…In a previous study together with the Chair for Robotics and Embedded Systems (University of Bayreuth), we designed and built an automated fiber spraying system, 26 which in the future could allow the reproducible production of SF‐OFC. This work deals on the one hand with a basic investigation of hand‐laid short fiber‐reinforced OFC with regard to fiber orientation and length.…”

Section: Introductionmentioning

confidence: 99%

Short fiber‐reinforced oxide fiber composites

Winkelbauer

Puchas

Schafföner

et al. 2021

Int J Applied Ceramic Tech

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This paper presents a novel fiber spraying process for the manufacturing of short fiber bundle‐reinforced Nextel™ 610/Al2O3‐ZrO2 oxide fiber composites (SF‐OFC) and its characterization. First, the influence of varying fiber lengths (7, 14, and 28 mm, continuous fibers) and fiber orientations (unidirectional 0°, quasi‐isotropic, ±45°) was investigated using hand‐laid SF‐OFC. Due to the weak matrix, the hand‐laid material exhibited a strongly fiber‐dominated material behavior, that is, variations in fiber length and orientation had a strong influence on the material properties. Second, the automated sprayed SF‐OFC, however, exhibited a random orientation of the fiber bundles, which resulted in in‐plane isotropic material properties. Average bending strengths of up to 177 MPa, strains of .39%, and a quasi‐ductile fracture behavior were achieved. The strain was, therefore, in the range of fabric‐reinforced OFC. While the bending strength of the SF‐OFC was somewhat lower than that of fabric‐reinforced OFC with the fiber orientation parallel to the loading direction, it was more than two times higher than the strength in 45° direction relative to the fabric reinforcement. Combined with good drapability and lower material costs compared to fabric‐reinforced OFC, SF‐OFC is, therefore, a promising material for industrial applications.

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Section: Introductionmentioning

confidence: 99%

Short fiber‐reinforced oxide fiber composites

Winkelbauer

Puchas

Schafföner

et al. 2021

Int J Applied Ceramic Tech

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“…A lot of applications are in the field of surface treatment, e.g. spray painting [3], deburring [4], welding [5], gluing [6], contour following [7], or fiber spraying [8]. There are also applications in pick-and-place scenarios, e.g.…”

Section: Related Workmentioning

confidence: 99%

Playback Robot Programming with Loop Increments

Riedl¹,

Henrich²

2022

Annals of Scientific Society for Assembly, Handling and Industrial Robotics 2021

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Playback robot programming is fast and easy to use for non-experts, because the robot only needs to be manually guided. However, it is only capable of replaying the trajectory exactly as it was taught. We present the concept of loop increments for playback programmed robots to allow the user to teach tasks like palletizing or stacking without having to explicitly guide the robot through each trajectory. Only the base trajectory for one repetition needs to be program med. After each loop iteration, the user-defined increment is added to the incremental configurations, e.g. to the pick or place configurations. To achieve this, two methods of defining the loop increments are shown. Afterwards, linear, Gaussian, and cosine blending functions in combination with the point and interval method are introduced for weighting the increments and as a foundation for the adaption algorithm. The evaluation showed, that the cosine blending function with the interval method best fits the needs of our programming system.

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“…Since the spray pattern of the spray gun has also direct influence on the quality of the produced composite and the used fiber bundles are expensive, the material flow and the spray pattern has also to be programmable with high accuracy through the use of pressure regulators. In case of [6], five pressure values have to be programmed.…”

Section: Fig 1 Schematic Illustration Of a Manual Fiber Spraying Processmentioning

confidence: 99%

“…As hardware setup for our experiments we use the cell proposed in [6], which utilizes a six degree of freedom robot. Further we use a tablet that provides touch input as input device.…”

Section: Experiments Setupmentioning

confidence: 99%

“…In this paper we present our programming framework for fiber spraying processes based on the automation approach presented in our work [6], which extends the framework presented in our work [3] for the use case fiber spraying processes. Section 2 gives an overview of the related work regarding the automation of fiber spraying processes and intuitive programming of robots.…”

Section: Introductionmentioning

confidence: 99%

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Playback Robot Programming Framework for Fiber Spraying Processes

Schmidt

Henrich

2022

Annals of Scientific Society for Assembly, Handling and Industrial Robotics 2021

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Robot-based automation is still not widespread in small and medium-sized enterprises, since programming industrial robots is usually costly and only feasible by experts. This disadvantages can be resolved by using intuitive robot programming approaches like playback programming. At the same time, there are currently not automatized automatized, like fiber spraying. We present a novel approach in programming a robot system for fiber spraying processes, which extends a playback programming framework inspired by video editing concepts. The resulting framework allows the programming of also the periphery devices needed for the fiber spraying process. We evaluated the resulting programming framework to measure the intuitiveness in the use and show that the framework is not only able to program fiber spraying tasks but is also rather intuitive to use for domain experts.

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Robot-Based Fiber Spray Process for Small Batch Production

Cited by 7 publications

References 7 publications

Short fiber‐reinforced oxide fiber composites

Short fiber‐reinforced oxide fiber composites

Playback Robot Programming with Loop Increments

Playback Robot Programming Framework for Fiber Spraying Processes

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