Scott Smith (1) , Tony Schmitz (2) , Thomas Feldhausen , Michael Sealy (2)
{"title":"Hybrid metal additive/subtractive machine tools and applications","authors":"Scott Smith (1) , Tony Schmitz (2) , Thomas Feldhausen , Michael Sealy (2)","doi":"10.1016/j.cirp.2024.05.002","DOIUrl":"10.1016/j.cirp.2024.05.002","url":null,"abstract":"<div><p>Additive manufacturing creates parts by depositing a preform, typically layer by layer. Subtractive manufacturing involves removing material from a preform to create parts. Hybrid machine tools combine both additive and subtractive processes in the same workspace. They can be used to create parts that meet functional tolerance and surface finish requirements, or to create features that are difficult to produce using additive or subtractive processes alone. This paper describes hybrid metal additive/subtractive machine tools. It covers design considerations, sensors and controls, process management, programming and software, and the impact on the design space. It also identifies future research challenges.</p></div>","PeriodicalId":55256,"journal":{"name":"Cirp Annals-Manufacturing Technology","volume":"73 2","pages":"Pages 615-638"},"PeriodicalIF":3.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141842254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abdur-Rahman Ali, Mauricio Schlösser Castillo, Felipe Cerdas, Christoph Herrmann (2)
{"title":"A stepwise approach for determining absolute environmental sustainability targets for an electric vehicle battery","authors":"Abdur-Rahman Ali, Mauricio Schlösser Castillo, Felipe Cerdas, Christoph Herrmann (2)","doi":"10.1016/j.cirp.2024.04.044","DOIUrl":"10.1016/j.cirp.2024.04.044","url":null,"abstract":"<div><p>The transition from the ‘Holocene-like’ interglacial state towards the Anthropocene epoch, driven by human activities, poses risks of triggering tipping points of the Earth system. Such risks create the need for target-based product design strategies, that are aligned with the environmental carrying capacities, such as the planetary boundaries framework. In this study, we introduce a stepwise approach to determine absolute environmental sustainability targets during the product development process. The approach integrates top-down factors such as planetary boundaries, IPCC carbon budgets and sharing principles shaping these targets. Furthermore, we assess the influence of bottom-up factors such as the selection of raw material suppliers and production location in achieving them. The application of the approach is illustrated for the case study of a traction battery. The potential future applications and limitations of the proposed stepwise approach are discussed.</p><p>Electric vehicle; Sustainable development; Absolute sustainability</p></div>","PeriodicalId":55256,"journal":{"name":"Cirp Annals-Manufacturing Technology","volume":"73 1","pages":"Pages 1-4"},"PeriodicalIF":3.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0007850624000544/pdfft?md5=859a6cbfa0a4b47f66434409506d1cca&pid=1-s2.0-S0007850624000544-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141959527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jiang Guo , Qikai Li , Zhen Tong , Wansheng Zhao (2) , Lin Li (1)
{"title":"A new internal surface polishing method for sub-millimeter slender tube with varying diameters","authors":"Jiang Guo , Qikai Li , Zhen Tong , Wansheng Zhao (2) , Lin Li (1)","doi":"10.1016/j.cirp.2024.04.031","DOIUrl":"10.1016/j.cirp.2024.04.031","url":null,"abstract":"<div><p>A new abrasive flow polishing method with a ferromagnetic blockage placed inside tube was proposed for finishing internal surface of slender tubes with varying diameters. A mathematic model was established to calculate the blockage's profile. Results indicate that the special designed ferromagnetic blockage provides an effective tool to adjust the flow velocity and pressure, and thus controlling local material removal. Axial tool marks were removed by rotating the workpiece during polishing. A uniform internal surface (<em>Sa</em> < 40 nm) was achieved when finishing a puncture needle with diameters ranging from 0.3 to 0.7 mm (initial <em>Sa</em> 600 - 1200 nm).</p></div>","PeriodicalId":55256,"journal":{"name":"Cirp Annals-Manufacturing Technology","volume":"73 1","pages":"Pages 265-268"},"PeriodicalIF":3.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141960079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A hand-interaction model for augmented reality enhanced human-robot collaboration","authors":"","doi":"10.1016/j.cirp.2024.04.001","DOIUrl":"10.1016/j.cirp.2024.04.001","url":null,"abstract":"<div><p>Flexible and rapidly adaptable automated production processes, e.g. with collaborative lightweight robots, are key aspects for the competitiveness of companies in globalised markets. However, software adaptation of the robot still requires specific programming skills. We have developed a human-centred programming by demonstration approach based on augmented reality to enable operators to intuitively adapt the robot programme. The developed hand-interaction model overcomes the challenge of object tracking during the assembly demonstration phase. This allows quick programme modifications by the operator using the head-mounted augmented reality device. The human-in-the-loop concept ensures a highly reliable and robust programming process.</p></div>","PeriodicalId":55256,"journal":{"name":"Cirp Annals-Manufacturing Technology","volume":"73 1","pages":"Pages 17-20"},"PeriodicalIF":3.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0007850624000131/pdfft?md5=d946fbe39581f586c94db88a81f1755b&pid=1-s2.0-S0007850624000131-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141138120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Peter Krajnik (2) , Konrad Wegener (1) , Thomas Bergs (2) , Albert J. Shih (1)
{"title":"Advances in modeling of fixed-abrasive processes","authors":"Peter Krajnik (2) , Konrad Wegener (1) , Thomas Bergs (2) , Albert J. Shih (1)","doi":"10.1016/j.cirp.2024.05.001","DOIUrl":"10.1016/j.cirp.2024.05.001","url":null,"abstract":"<div><p>Research over the last 70 years has led to a better understanding of fixed-abrasive machining processes. This knowledge is often expressed in the form of physical and empirical models that cover forces, power, specific energy, wheel/workpiece topography, wear, thermal aspects, cooling, dressing, and more. This paper first examines the established models that continue to constitute the fundamental knowledge base in fixed-abrasive technology. Special attention is given to geometry, kinematics, and thermomechanical modeling. Recent advances in process monitoring and big data analytics provide new opportunities to further strengthen the state of the art in modeling through data-driven approaches. In addition, examples on how models – implemented in simulation software – can be used to predict and optimize industrial operations have been demonstrated. This is illustrated by several use cases from real production, including bearing, creep-feed form, gear, camshaft, crankshaft, and centerless grinding, along with diamond-wheel truing.</p></div>","PeriodicalId":55256,"journal":{"name":"Cirp Annals-Manufacturing Technology","volume":"73 2","pages":"Pages 589-614"},"PeriodicalIF":3.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0007850624001173/pdfft?md5=83d2ec4e5ceef093e3216adff6557d0b&pid=1-s2.0-S0007850624001173-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141841861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Nanometric cutting of plasma modified polycrystalline tin","authors":"Peng Lyu , Fengzhou Fang (1) , Daniel Meyer (2)","doi":"10.1016/j.cirp.2024.04.064","DOIUrl":"10.1016/j.cirp.2024.04.064","url":null,"abstract":"<div><p>Soft and low-melting-point polycrystalline tin holds considerable promise in the field of advanced lithography. However, its machinability is significantly hindered by the grain size, posing substantial limitations on its practical utility. Herein, a novel approach involving oxidation-enhanced plasma modification is presented to obtain a grain coarsening layer, thereby enhancing machinability. The effects of cutting mode and feed rate are examined, revealing that plasma modification results in the formation of a millimeter-scale grain coarsening layer. Consequently, the tin surface with a surface roughness of 0.98 nm in Sa after cutting is effectively achieved, benefiting applications in ultra-short light wavelength sources.</p></div>","PeriodicalId":55256,"journal":{"name":"Cirp Annals-Manufacturing Technology","volume":"73 1","pages":"Pages 33-36"},"PeriodicalIF":3.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141959677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Rekowski , K.C. Grötzinger , A. Schott , M. Liewald (2)
{"title":"Thin-film sensors for data-driven concentricity prediction in cup backward extrusion","authors":"M. Rekowski , K.C. Grötzinger , A. Schott , M. Liewald (2)","doi":"10.1016/j.cirp.2024.04.035","DOIUrl":"10.1016/j.cirp.2024.04.035","url":null,"abstract":"<div><p>The manufacture of precise metal components by cold forging poses serious challenges to the process reliability under unstable process conditions. The detection of geometrical imperfections, such as concentricity deviations, is necessary for the operator to adjust the forging tool rack properly. In this paper, a novel piezoelectric thin-film sensor disc is introduced to detect such concentricity deviations based on the measurement of eccentric load, that is arising from elastic punch deformation. Experimental results showed, that the concentricity deviation of the produced parts efficiently can be predicted by processing measured force data using a support vector regression algorithm.</p></div>","PeriodicalId":55256,"journal":{"name":"Cirp Annals-Manufacturing Technology","volume":"73 1","pages":"Pages 205-208"},"PeriodicalIF":3.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0007850624000490/pdfft?md5=24ed88063a5f4160a02aa81a7a3e9ccd&pid=1-s2.0-S0007850624000490-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141960081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Throughput scaling and thermomechanical behaviour in multiplexed fused filament fabrication","authors":"","doi":"10.1016/j.cirp.2024.04.024","DOIUrl":"10.1016/j.cirp.2024.04.024","url":null,"abstract":"<div><p>Multiplexed Fused Filament Fabrication (MF3) combines a dynamic extrusion-based toolpath with a multi-extruder-single-gantry machine tool architecture to increase printing speed without sacrificing geometric capabilities or increasing hardware complexity. This work establishes a novel capability for geometrically generalizable synthesis of MF3 toolpaths and creates a new thermal model that incorporates the unique nature of material deposition. It is shown that MF3 can increase throughput by an order of magnitude or more via the atypical and nonlinear effects of part size, infill density and extruder spacing. Further, the unusual temperature history in MF3 is found to enhance the part's mechanical properties.</p></div>","PeriodicalId":55256,"journal":{"name":"Cirp Annals-Manufacturing Technology","volume":"73 1","pages":"Pages 177-180"},"PeriodicalIF":3.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0007850624000313/pdfft?md5=58db18737860d4c53fd2369a9fdeea07&pid=1-s2.0-S0007850624000313-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140756010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Precision optimized process design for highly repeatable handling with articulated industrial robots","authors":"","doi":"10.1016/j.cirp.2024.03.008","DOIUrl":"10.1016/j.cirp.2024.03.008","url":null,"abstract":"<div><p>High-precision handling processes are essential for various high-tech industries and are typically realized using specialized high precision robots. Articulated robots are rarely used for such tasks due to their low stiffness and accuracy stemming from their kinematic structure. This work presents a methodology for designing handling processes that maximise repeatability with articulated robots. By considering their kinematic structures’ highly pose dependent properties as well as sensitivity to external disturbances in every step of the processes design, significantly improved repeatability can be achieved. The applicability of the new methodology is verified experimentally using the example of handling of large silicon dies.</p></div>","PeriodicalId":55256,"journal":{"name":"Cirp Annals-Manufacturing Technology","volume":"73 1","pages":"Pages 25-28"},"PeriodicalIF":3.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0007850624000088/pdfft?md5=eb587f2fe5f06e0af870cc97d58c0fae&pid=1-s2.0-S0007850624000088-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140758565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A generative design method based on spline scanning for additive manufacturing","authors":"","doi":"10.1016/j.cirp.2024.04.025","DOIUrl":"10.1016/j.cirp.2024.04.025","url":null,"abstract":"<div><p>While additive manufacturing (AM) provides design flexibility, challenges persist in handling intricate freeform shapes, especially those laden with fine details. Conventional AM processes, such as slicing stereolithography (STL) format models, generating line segment toolpaths, and polyline-based printing, prove costly and compromise accuracy. This paper proposes a solution: the spline scanning generative design method. Utilizing spline patterns to construct smooth toolpaths directly, it enables seamless curved printing, significantly reducing computational expenses while maintaining high accuracy through spline control points. Experimental implementation, supported by dedicated algorithms, attests to its efficacy, emphasizing its potential for intricate freeform structure design and printing.</p></div>","PeriodicalId":55256,"journal":{"name":"Cirp Annals-Manufacturing Technology","volume":"73 1","pages":"Pages 93-96"},"PeriodicalIF":3.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0007850624000337/pdfft?md5=feb3222e2d804ee695902182339c2757&pid=1-s2.0-S0007850624000337-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141023309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}