Relevant bibliographies by topics / Incremental sheet forming tool

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Incremental sheet forming tool'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Incremental sheet forming tool"

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Chezhian Babu, S., and V. S. Senthil Kumar. "Investigations on Incremental Forming of Low Carbon Steel Sheets." Applied Mechanics and Materials 26-28 (June 2010): 340–46. http://dx.doi.org/10.4028/www.scientific.net/amm.26-28.340.

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Low carbon steel sheets are used invariably in automobile body panels and construction structural applications. Conventional forming techniques require forming dies and heavy duty presses to make required shapes, which are costly in manufacturing. Incremental forming is a recently developing die less sheet metal part production technique in which the necessary part is obtained by gradually tracing its contours on a sheet of required thickness using stepwise tool indents. In this investigation, Low carbon steel sheets of different thicknesses were incrementally formed using a hemispherical tool under varying step depths. The final thickness of the sheet, forming angle, roughness and microhardness of the formed shapes were characterized. The microstructure of the formed materials was studied using optical microscope.
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Meier, Horst, V. Smukala, O. Dewald, and Jian Zhang. "Two Point Incremental Forming with Two Moving Forming Tools." Key Engineering Materials 344 (July 2007): 599–605. http://dx.doi.org/10.4028/www.scientific.net/kem.344.599.

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This paper describes a new development of an incremental, robot based sheet metal forming process for the production of sheet metal components for limited-lot productions and prototypes. The kinematic based generation of the shape is implemented by means of two industrial robots, which are interconnected to a cooperating robot system. Compared to other incremental sheet metal forming machines this system offers a high geometrical form flexibility without the need of any workpiece dependent tools. The principle of the procedure is based on flexible shaping by means of a freely programmable path-synchronous movement of two robots. So far, the final shape is produced by the incremental infeed of the forming tool in depth direction and its movement along the contour in lateral direction on each level. The counter tool, with its simple geometry, was used to support the sheet metal on the backside by moving synchronously along the outer contour, constantly on the same level. This corresponds to a fixed backplate used in other incremental sheet metal forming processes. Due to the use of a new robot system with extended control algorithms for cooperating robots, it will be possible to release the counter tool from its constant path on the outer contour and support the forming tool right on the opposite side of the sheet to generate a predefined gap between the two hemispherical tools. This way at each moment a small part of a full die, as it is used in other processes, is simulated without the need of producing a workpiece dependent die. The extended payload of the new robot system gives the opportunity to form steel blanks, for the first time.
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HINO, R., F. YOSHIDA, N. NAGAISHI, and T. NAKA. "INCREMENTAL SHEET FORMING WITH LOCAL HEATING FOR LIGHTWEIGHT HARD-TO-FORM MATERIAL." International Journal of Modern Physics B 22, no. 31n32 (December 30, 2008): 6082–87. http://dx.doi.org/10.1142/s0217979208051613.

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A new incremental sheet forming technology with local heating is proposed to form lightweight hard-to-form sheet metals such as aluminum-magnesium alloy (JIS A5083) sheet or magnesium alloy (JIS AZ31) sheet. The newly designed forming tool has a built-in heater to heat the sheet metal locally and increase the material ductility around the tool-contact point. Incremental forming experiments of A5083 and AZ31 sheets are carried out at several tool-heater temperatures ranging from room temperature to 873K using the new forming method. The experimental results show that the formability of A5083 and AZ31 sheets increases remarkably with increasing local-heating temperature. In addition, springback of formed products decreases with increasing local-heating temperature. The developed incremental sheet forming method with local heating has great advantages in not only formability but also shape fixability. It is an effective forming method for lightweight hard-to-form sheet metal for small scale productions.
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Fritzen, Daniel, Anderson Daleffe, Jovani Castelan, and Lirio Schaeffer. "Brass 70/30 and Incremental Sheet Forming Process." Key Engineering Materials 554-557 (June 2013): 1419–31. http://dx.doi.org/10.4028/www.scientific.net/kem.554-557.1419.

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This work addresses through bibliographies and experiments the behavior of sheet brass 70/30 for Incremental Sheet Forming process - ISF, based on the parameters: wall angle (), step vertical (ΔZ) strategy and the way the tool. Experiments based on the method called Single Point Incremental Forming - SPIF. For execution of practical tests, we used the resources: software CAD / CAM, CNC machining center with three axles, matrix incremental, incremental forming tool and a device press sheets. Furthermore, measurement was made of the true deformation () and thickness (s1). Practical tests have shown that the spiral machining strategy yielded a greater wall angle, compared to the conventional strategy outline.
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Sajjad, Muhammad, Jithin Ambarayil Joy, and Dong Won Jung. "Finite Element Analysis of Incremental Sheet Forming for Metal Sheet." Key Engineering Materials 783 (October 2018): 148–53. http://dx.doi.org/10.4028/www.scientific.net/kem.783.148.

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Incremental sheet metal forming, is a non-conventional machining process which offers higher formability, flexibility and low cost of production than the traditional conventional forming process. Punch or tool used in this forming process consecutively forces the sheet to deform locally and ultimately gives the target profile. Various machining parameters, such as type of tool, tool path, tool size, feed rate and mechanical properties of sheet metal, like strength co-efficient, strain hardening index and ultimate tensile strength, effects the forming process and the formability of final product. In this research paper, Single Point Incremental Forming was simulated using Dassault system’s Abaqus 6.12-1 and results are obtained. Results of sheet profile and there change in thickness is investigated. For this paper, we simulated the process in abaqus. The tool diameter and rotational speed is find out for the production of parts through incremental forming. The simulation is done for two type of material with different mechanical properties. Various research papers were used to understand the process of incremental forming and its simulation.
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Siddiqi, Muftooh Ur Rehman, Jonathan R. Corney, Giribaskar Sivaswamy, Muhammad Amir, and Rahul Bhattacharya. "Design and validation of a fixture for positive incremental sheet forming." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 232, no. 4 (April 19, 2017): 629–43. http://dx.doi.org/10.1177/0954405417703423.

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Incremental sheet forming is an emerging manufacturing technique in which sheet metal is formed into desired shape through the application of localized force using a hemispherical tool. Potential advantages of the process are its relatively low cost and small lead times, and these have to be balanced against the disadvantages of low dimensional accuracy and a limited understanding of the process’ internal mechanics. Incremental sheet forming system can be classified as positive, or negative, depending on whether the sheet material is progressively deformed onto a protrusion or a cavity. In negative systems, the work piece is held on a static fixture; whereas, in positive incremental sheet forming, the fixture must be incrementally lowered onto a protruding die. Although the vertical movement of positive incremental sheet forming fixtures is easily illustrated schematically, its implementation is challenging; if the descent is actuated, the motion has to be carefully coordinated with those of the forming tool; if free sliding on vertical columns, the rig must move without jamming or rocking. This article reports the development and testing of a positive incremental sheet forming fixture design that uses nylon sleeve bushes. Symmetric and asymmetric components were formed using the designed fixture, modular wooden dies and a rotating tool with multiple diameters and the results are discussed.
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Sieczkarek, Peter, Lukas Kwiatkowski, A. Erman Tekkaya, Eugen Krebs, Petra Kersting, W. Tillmann, and Jan Herper. "Innovative Tools to Improve Incremental Bulk Forming Processes." Key Engineering Materials 554-557 (June 2013): 1490–97. http://dx.doi.org/10.4028/www.scientific.net/kem.554-557.1490.

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Sheet-bulk metal forming is an innovative process with a high potential to generate load-adapted parts with high precision. Bulk forming processes of sheet metals especially require high process forces, resulting in an intense contact pressure and, thus, in a very high abrasive and adhesive wear. As a method to reduce or avoid these common wear phenomena, even hardened or coated tool surfaces are not sufficient. The objective of this paper is to show an improvement of the tool resistance during an incremental forming process by an adapted tool design and the application of structured tool surfaces combined with coatings. For the tool surface the structure of the scarabaeus beetle serves as the basis for a bionic structure. This structure was manufactured by micromilling. Despite the high hardness of the tool material and the complex geometry of the forming tools, very precise patterns were machined successfully using ball-end milling cutters. The combination of bionic structures with coating techniques like physical vapor deposition (PVD) on plasma nitrided tool surfaces is very promising. In this work, the influence of process parameters (workpiece material, lubrication, tool design, stepwise infeed) on the tool resistance during the forming operation was analyzed experimentally. The results of the optimized forming tools were compared to conventional, unstructured, uncoated, and only plasma nitrided forming tools. The different tools were applied to 2 mm thick metal sheets made of aluminum (AlMg3) and steel (non-alloy quality steel DC04). As a result, the process forces could be reduced by a modified shape and surface of the tools. Thus, the lifetime of the tools can be enhanced.
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Vahdati, Mehdi, Ramezanali Mahdavinejad, and Saeid Amini. "Investigation of the ultrasonic vibration effect in incremental sheet metal forming process." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 231, no. 6 (April 8, 2015): 971–82. http://dx.doi.org/10.1177/0954405415578579.

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The mechanism of incremental sheet metal forming is based on plastic and localized deformation of sheet metal. The sheet metal is formed using a hemispherical-head tool in accordance with the path programmed into the computer numerical control milling machine controller. Experimental and numerical analyses have been performed previously on the application of ultrasonic vibration to various metal forming processes. However, thus far, the effects of ultrasonic vibration on incremental sheet metal forming have not been investigated. This article presents the process of design, analysis, manufacture and testing of a vibrating forming tool for the development of ultrasonic vibration–assisted incremental sheet metal forming. The results obtained from modal analysis and natural frequency measurement of the vibrating tool confirmed the emergence of a longitudinal vibration mode and resonance phenomenon in the forming tool. Then, the effect of ultrasonic vibration on incremental sheet metal forming was studied. The obtained experimental results from the straight groove test on Al 1050-O sheet metals showed that ultrasonic vibration led to decrease in the following parameters as compared with conventional incremental sheet metal forming: applied force on forming tool axis, spring-back and surface roughness of formed sample.
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Galdos, Lander, Eneko Sáenz de Argandoña, Nagore Otegi, and Rafael Ortubay. "Incremental Forming of Sandwich Materials." Key Engineering Materials 504-506 (February 2012): 931–36. http://dx.doi.org/10.4028/www.scientific.net/kem.504-506.931.

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In the last decade, a completely new process has been developed using the existing knowledge in machining and in flow forming and spinning processes, so called the Incremental Sheet Forming. In the process, a spherical tool, governed by CNC incrementally forms a sheet metal to form complex and asymmetric parts using minimum tooling. Several works have been published to study the process limits, optimization of paths for the forming of deep walls and to extent the formability of some alloys using temperature as a process variable. Few studies have been also published where the incremental forming of polymers has been studied. In this work, the forming of steel-polymer-steel hybrid material or Laminate Vibration Damping Steels (LVDS) is considered. Spinnability tests are used to study the process limits and the effects of having two independent sheets in the thickness of the initial blank. The maximum forming angle, forming vertical force and maximum strains near the fracture are presented for the sandwich material in comparison to steel with three different thicknesses and same composition.
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Otsu, Masaaki. "Excellent Formability of Light Metals Sheets by Friction Stir Incremental Forming." Key Engineering Materials 716 (October 2016): 3–10. http://dx.doi.org/10.4028/www.scientific.net/kem.716.3.

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The results about friction stir incremental forming of light metals sheets from the beginning of development to the latest in the author’s laboratory are introduced. Comparison of formability by the conventional single point incremental sheet metal forming and friction stir incremental forming for magnesium alloys, aluminum alloys and titanium sheets were introduced. Effect of tool rotation direction, multistage forming and double side forming are also introduced.
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Dissertations / Theses on the topic "Incremental sheet forming tool"

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Jackson, Kathryn Pamela. "The mechanics of incremental sheet forming." Thesis, University of Cambridge, 2008. https://www.repository.cam.ac.uk/handle/1810/267843.

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Incremental sheet forming (ISF) is a flexible process where an indenter moves over the surface of a sheet of metal to form a 3D shell incrementally by a progression of localised deformation. Despite extensive research into the process, the deformation mechanics is not fully understood. This thesis presents new insights into the mechanics of ISF applied to two groups of materials: sheet metals and sandwich panels. A new system for measuring tool forces in ISF is commissioned. The system uses six loadcells to measure reaction forces on the workpiece frame. Each force signal has an uncertainty of ±15 N. This is likely to be small in comparison to tool forces measured in ISF. The mechanics of ISF of sheet metals is researched. Through-thickness deformation and strains of copper plates are measured for single-point incremental forming (SPIF) and two-point incremental forming (TPIF). It is shown that the deformation mechanisms of SPIF and TPIF are shear parallel to the tool direction, with both shear and stretching perpendicular to the tool direction. Tool forces are measured and compared throughout the two processes. Tool forces follow similar trends to strains, suggesting that shear parallel to the tool direction is a result of friction between the tool and workpiece. The mechanics of ISF of sandwich panels is investigated. The mechanical viability of applying ISF to various sandwich panel designs is evaluated by observing failure modes and damage under two simple tool paths. ISF is applicable to metal/polymer/metal sandwich panels. This is because the cores and faceplates are ductile and largely incompressible, and therefore survive local indentation during ISF without collapse. Through-thickness deformation, tool forces and applicability of the sine law for prediction of wall thickness are measured and compared for a metal/polymer/metal sandwich panel and a monolithic sheet metal. The mechanical results for ISF of sheet metals transfer closely to sandwich panels. Hence, established knowledge and process implementation procedures derived for ISF of monolithic sheet metals may be used in the future for ISF of sandwich panels.
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Shankar, Ravi. "Surface reconstruction and tool path strategies for incremental sheet metal forming /." Aachen : Shaker, 2008. http://d-nb.info/989220230/04.

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Shankar, Ravi [Verfasser]. "Surface Reconstruction and Tool Path Strategies for Incremental Sheet Metal Forming / Ravi Shankar." Aachen : Shaker, 2008. http://d-nb.info/1162792094/34.

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Fritzen, Daniel. "Estudo do processo de estampagem incremental em chapa de latão 70/30." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/49294.

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O presente trabalho tem como objetivo avaliar o comportamento da chapa de latão 70/30 para o processo de Estampagem Incremental de Chapas (ISF - Incremental Sheet Forming), baseado nos parâmetros: ângulo de parede (ψ), passo vertical ( Z) e estratégia do caminho da ferramenta. Os experimentos baseiam-se na variante da Estampagem Incremental denominada Estampagem Incremental com Ponto Simples (SPIF - Single Point Incremental Forming). Foram realizados 18 ensaios usando uma ferramenta de estampar com raio (RT) de 5 mm. Para execução dos testes práticos, foram utilizados os recursos: softwares CAD/CAM, centro de usinagem CNC com três eixos, matriz incremental, ferramenta de estampagem incremental e um dispositivo prensa chapas. Além disso, o acabamento da superfície conformada foi medido através do parâmetro de rugosidade RZ nos principais ensaios, bem como a medição das deformações verdadeiras (j) e da espessura (s1). Os testes práticos demonstraram que a estratégia de usinagem espiral proporcionou um maior ângulo de parede, comparado à estratégia paralela de contorno.
This study aims to evaluate the behavior of 70/30 brass plate to the process of Incremental Sheet Forming - ISF, based on the parameters: wall angle (ψ), vertical step ( Z) and tool path strategy. The experiments were based on a variation of the ISF process, called SPIF (Single Point Incremental Forming). Eighteen tests were conducted using a punching tool with a radius (RT) of 5 mm. For the execution of practical tests, the resources were used: CAD / CAM software, CNC machining center with three axis. It was also used an incremental matrix, a tool for incremental forming and a sheet-press device. In addition, the surface finish was measured by RZ roughness parameter in the main tests, the same way the measurement of true strains (φ) and thickness (s1). The practice tests showed that the spiral machining strategy has provided a greater wall angle, compared to the parallel strategy contour.
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Maximiliano, Gerson. "Estampagem incremental de múltiplos passes em chapa de latão C268." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/149218.

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O presente trabalho investiga o comportamento da chapa de latão C268, com 0,50 mm de espessura, quando exposto ao processo de Estampagem Incremental de Chapas de Metal (Incremental Sheet Metal Forming -ISMF). Especificamente para a pesquisa, foram utilizadas as modalidades de Estampagem Incremental com Ponto Simples (Single Point Incremental Forming- SPIF) e Estampagem Incremental de Múltiplos Passes (Multi Pass Single Point Incremental Forming- MSPIF). Os experimentos foram baseados em uma geometria de tronco de pirâmide de base quadrada com 100 mm de lado e 45 mm de profundidade. Para as estratégias de estampagem foi atribuído, a estampagem helicoidal. Como resultado principal, foi verificado o ângulo de parede máximo atingido por cada processo de estampagem incremental. Adicionalmente, ensaios de tração, análise de deformações e de rugosidade da chapa de latão foram realizados. Todos os seus resultados estão detalhados na investigação. Para os parâmetros adotados nestes experimentos, o ângulo de parede obtido por SPIF foi maior do que pelo estudo proposto por MSPIF.
The present study investigates the performance of the brass plate C-268 with 0.50 mm thickness, when exposed to Incremental Sheet Metal Forming (ISMF). Specifically for research, it was used the modalities Single Point Incremental Forming (SPIF) and Multi Pass Single Point Incremental Forming (MSPIF). The experiments were based on a truncated pyramid geometry with square base 100 mm side and 45 mm depth. For forming strategies has been assigned, the helical forming. As the main outcome, it was found the maximum wall angle achieved by each process of incremental printing. In addition, tensile tests, analysis of deformation and roughness of the brass sheet were performed. All results are detailed in the investigation. For the parameters used in these experiments, the wall angle obtained by SPIF is greater than the study proposed by MSPIF.
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Daleffe, Anderson. "Estudo do processo de estampagem incremental em chapa de alumínio puro." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/16205.

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O presente trabalho estuda o processo de estampagem incremental em chapas de alumínio puro, descrevendo as ferramentas e um suporte prensa chapas. Estuda e pesquisa bibliograficamente e experimentalmente o processo de estampagem incremental. O trabalho apresenta os procedimentos de caracterização utilizados para determinar os limites do processo, aplicáveis para chapas de 0,5 mm de espessura em alumínio puro. A caracterização da chapa, juntamente com o ensaio mecânico de tração e os testes práticos de estampagem fornecerão um panorama da estampagem incremental, para algumas situações diversas sobre o tema. Para a execução dos testes práticos foi fabricado um dispositivo prensa chapas e um punção, matriz incremental e ferramenta de estampagem incremental, também foram feitas adaptações na máquina CNC, centro de usinagem CNC com três eixos.
This paper studies the process of incremental sheet forming, in plates the aluminum pure, describing the tools and support a press plates. Studies and literature search and experimentally the process of stamping incremental. The work presents the characterization of procedures used to determine the limits of the process, applicable to plates of 0.5 mm thick pure aluminum. The characterization of the plate, along with mechanical traction test and practical tests of printing provide an overview of incremental printing, for some different situations on the subject. For the practical implementation of the tests was a device manufactured press plates and a puncture, matrix and incremental tool for stamping incremental, were also made adjustments in the CNC machine, CNC machining center with three axles.
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Castelan, Jovani. "Estampagem incremental do titânio comercialmente puro àplicação em implante craniano." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2010. http://hdl.handle.net/10183/28829.

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Este trabalho apresenta um estudo sobre o uso do processo de estampagem incremental empregando chapas de titânio comercialmente puro. O modelo do componente empregado como foco do trabalho foi um implante craniano a base de titânio. Este tipo de implante é usado, por exemplo, em casos de acidentes em que a camada óssea do crânio foi perdida. Com auxílio de um sistema computacional CAD (Computer Aided Design), foi desenvolvido um modelo 3D, a partir de imagens de tomografia computadorizada. Foram determinadas as características mecânicas e biomédicas das chapas de titânio F67 - grau 2 e, através de software CAM, foi possível gerar as trajetórias de ferramenta, utilizadas na usinagem do molde e na estampagem da chapa. Os testes práticos demostraram que a estampagem incremental proporcionou maiores deformações do que a estampagem convencional e qual a estratégia de usinagem que proporcionou a maior homogeneidade na distribuição de espessura e conformidade dimensional das chapas estampadas.
This work present a research about the incremental sheet forming process, using commercially pure titanium sheets. The model of component used like focus on work was a titanium cranial implant. This kind of implant is used, e.g., in cases of accidents where skull bone was lost. With aided of a CAD computacional system (Computer Aided Design), was development a 3D model, with images of computadorized tomography. It was determined the mechanical and biomedical properties of the F67 grade 2 titanium sheet and, through CAM software, it was possible development the tool path, used in the milling mold and sheet forming. The pratical tests showed the incremental forming provided greater than convencional forming and which the tool movement strategy that provided better homogeneity in the thickness distribution and dimensional conformity of the forming sheets.
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Ali, Ahmed. "Incremental sheet metal forming." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0020/MQ54441.pdf.

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Powell, Nicholas Newton. "Incremental forming of flanged sheet metal components." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357609.

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Raithatha, Ankor Mahendra. "Incremental sheet forming : modelling and path optimisation." Thesis, University of Oxford, 2008. http://ora.ox.ac.uk/objects/uuid:89b0ac1e-cab4-4d80-b352-4f48566c7668.

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Incremental sheet forming (ISF) is a novel metal shaping technology that is economically viable for low-volume manufacturing, customisation and rapid-prototyping. It uses a small tool that is controlled by a computer-numerically controlled sequence and the path taken by this tool over the sheet defines the product geometry. Little is currently known about how to design the tool-path to minimise geometric errors in the formed part. The work here addresses this problem by developing a model based tool-path optimisation scheme for ISF. The key issue is how to generate an efficient model for ISF to use within a path optimisation routine, since current simulation methods are too slow. A proportion of this thesis is dedicated to evaluating the applicability of the rigid plastic assumption for this purpose. Three numerical models have been produced: one based on small strain deformation, one based on limit analysis theory and another that approximates the sheet to a network of rods. All three models are formulated and solved as second-order cone programs (SOCP) and the limit analysis based model is the first demonstration of an upper-bound shell finite element (FE) problem solved as an SOCP. The models are significantly faster than commercially available FE software and simulations are compared with experimental and numerical data, from which it is shown the rigid plastic assumption is suitable for modelling deformation in ISF. The numerical models are still too slow for the path optimisation scheme, so a novel linearised model based on the concept of spatial impulse responses is also formulated and used in an optimal control based tool-path optimisation scheme for producing axisymmetric products with ISF. Off-line and on-line versions of the scheme are implemented on an ISF machine and it is shown that geometric errors are significantly reduced when using the proposed method. This work provides a new structured framework for tool-path design in ISF and it is also a novel use of feedback to compensate for geometrical errors in ISF.
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Books on the topic "Incremental sheet forming tool"

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Ajay and Ravi Kant Mittal. Incremental Sheet Forming Technologies. First edition. | Boca Raton, FL : CRC Press, 2021.: CRC Press, 2020. http://dx.doi.org/10.1201/9780429298905.

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Ajay and Ravi Kant Mittal. Incremental Sheet Forming Technologies: Principles, Merits, Limitations, and Applications. Taylor & Francis Group, 2020.

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Ajay and Ravi Kant Mittal. Incremental Sheet Forming Technologies: Principles, Merits, Limitations, and Applications. Taylor & Francis Group, 2020.

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Ajay and Ravi Kant Mittal. Incremental Sheet Forming Technologies: Principles, Merits, Limitations, and Applications. Taylor & Francis Group, 2020.

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Incremental Sheet Forming Technologies: Principles, Merits, Limitations, and Applications. Taylor & Francis Group, 2020.

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Book chapters on the topic "Incremental sheet forming tool"

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Ajay and Ravi Kant Mittal. "Machine Tools and Forming-Tools for Incremental Sheet Forming Process." In Incremental Sheet Forming Technologies, 67–86. First edition. | Boca Raton, FL : CRC Press, 2021.: CRC Press, 2020. http://dx.doi.org/10.1201/9780429298905-4.

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Skjoedt, M., M. H. Hancock, and N. Bay. "Creating Helical Tool Paths for Single Point Incremental Forming." In Sheet Metal 2007, 583–90. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-437-5.583.

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Meier, H., V. Smukala, O. Dewald, and Jian Zhang. "Two Point Incremental Forming with Two Moving Forming Tools." In Sheet Metal 2007, 599–605. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-437-5.599.

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Afonso, Daniel, Ricardo Alves de Sousa, Ricardo Torcato, and Liliana Pires. "Sheet Metal Tools Design." In Incremental Forming as a Rapid Tooling Process, 57–71. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-15360-1_4.

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Jurisevic, Bostjan, Viktor Sajn, Mihael Junkar, and Franc Kosel. "Experimental and Numerical Study of the Tool in Water Jet Incremental Sheet Metal Forming." In Advances in Integrated Design and Manufacturing in Mechanical Engineering II, 79–91. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6761-7_6.

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Magnus, Christian, Bolko Buff, and Horst Meier. "Flexible Production of Small Lot Sizes by Incremental Sheet Metal Forming with Two Moving Tools." In Lecture Notes in Production Engineering, 33–37. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01964-2_5.

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Afonso, Daniel, Ricardo Alves de Sousa, Ricardo Torcato, and Liliana Pires. "Incremental Sheet Forming." In Incremental Forming as a Rapid Tooling Process, 23–43. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-15360-1_2.

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Ajay and Ravi Kant Mittal. "Incremental Sheet Forming." In Incremental Sheet Forming Technologies, 19–38. First edition. | Boca Raton, FL : CRC Press, 2021.: CRC Press, 2020. http://dx.doi.org/10.1201/9780429298905-2.

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Pérez-Santiago, Rogelio, Isabel Bagudanch, and Maria Luisa Garcia-Romeu. "Incremental Sheet Forming." In Modern Manufacturing Processes, 47–63. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2019. http://dx.doi.org/10.1002/9781119120384.ch3.

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Jeswiet, J. "Asymmetric Incremental Sheet Forming." In Sheet Metal 2005, 35–58. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-972-5.35.

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Conference papers on the topic "Incremental sheet forming tool"

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Prize, Michael, Douglas Bristow, and Robert Landers. "Modeling Force Fluctuations in Incremental Sheet Forming." In 2020 International Symposium on Flexible Automation. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/isfa2020-9621.

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Abstract Incremental Sheet Forming (ISF) is a versatile manufacturing method in which a three-dimensional part is fabricated by progressively deforming a metal sheet. This is typically done via a robot with a single point tool following a defined trajectory. During this process a reaction force between the forming tool and sheet is generated. This force, denoted the forming force and defined as the force acting perpendicular to the sheet, has been modeled in several studies. Given a part with homogenous material, a fixed part geometry, and constant process parameters, these models predict the forming force will be constant. However, many studies have shown that this force fluctuates during the process. This paper augments the model by accounting for changes in process parameters due to robot geometric errors to describe these fluctuations. The model is experimentally validated, and the fluctuations of the forming force are reduced by 51% by modifying the tool path based on the identified robot geometric error.
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Ren, Huaqing, Newell Moser, Zixuan Zhang, Kornel F. Ehmann, and Jian Cao. "Effects of Tool Deflection in Accumulated Double-Sided Incremental Forming Regarding Part Geometry." In ASME 2016 11th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/msec2016-8839.

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Incremental forming is a flexible dieless forming process. In incremental forming, the metal sheet is clamped around its periphery. One or multiple generic stylus-type tools move along a predefined toolpath, incrementally deforming the sheet metal into a final, freeform shape. Compared with the traditional sheet metal forming process, the incremental forming process is more flexible, energy efficient and cost effective due to lower capital investment related to tooling. However, maintaining tight geometric tolerances in incremental formed parts can be a challenge. Specifically, undesired global bending is usually induced near the region between the tools and fixture resulting in a compromise in geometric accuracy. To address this issue, Accumulated Double-Sided Incremental Forming (ADSIF) is proposed, which utilizes two tools on both sides of the metal to better achieve localized deformation while simultaneously constraining global bending outside the forming area. Moreover, in ADSIF, the two tools are moving from inward to outward, and thus the tools are always forming virgin material and so as to limit forces on the already-formed part. Thus, ADSIF has a higher potential to achieve the desired geometry. Nevertheless, tool deflection due to machine compliance is still an issue that can have a considerable effect on geometric accuracy. In this work, the effect of tool deflection related to part geometry is studied for the ADSIF process. The nature of using two tools, rather than one, in ADSIF inherently implies that relative tool position is a critical process parameter. It is the region near these two tools where local squeezing and bending of the sheet occurs, the primary modes of deformation found in ADSIF. The change of relative tool positions (i.e., tool gap and relative position angle) are studied in detail by first developing an analytical model. It is concluded that the tool gap will be enlarged under the influence of tool compliance while the relative position angle is less affected. Additionally, a finite element simulation capable of modeling tool deflection is established. The comparison between the simulation results using rigid tools and deformable ones clearly demonstrated the significant influence of tool compliance on part geometry. Lastly, an axisymmetric part with varying wall angles was formed, and it was confirmed that ADSIF demonstrates improved geometry accuracy compared with conventional Double-Sided Incremental Forming.
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Grimm, Tyler J., Ihab Ragai, and John T. Roth. "Feasibility of Past Vertical Forming Utilizing Single Point Incremental Sheet Forming." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71069.

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Incremental forming (IF) is a novel sheet material forming technique typically restricted to drafted geometries. By utilizing tooling which features regions that extend radial from the axis of the tool, it is proposed that this restriction can be eliminated. Additionally, by controlling the rotational motion of the tool, it is proposed that greater levels of detail can be achieved in the IF process. In the following works, the feasibility of utilizing this type of tooling in the IF process is discussed, as well as several variations of such tooling. Validation of the proposed tooling is also presented.
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Shi, Yi, Jian Cao, and Kornel F. Ehmann. "Dieless Water Jet Incremental Micro-Forming." In ASME 2018 13th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/msec2018-6490.

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Compared to the conventional single-point incremental forming (SPIF) processes, water jet incremental micro-forming (WJIMF) utilizes a high-speed and high-pressure water jet as a tool instead of a rigid round-tipped tool to fabricate thin shell micro objects. Thin foils were incrementally formed with micro-scale water jets on a specially designed testbed. In this paper, the effects on the water jet incremental micro-forming process with respect to several key process parameters, including water jet pressure, relative water jet diameter, sheet thickness, and feed rate, were experimentally studied using stainless steel foils. Experimental results indicate that feature geometry, especially depth, can be controlled by adjusting the processes parameters. The presented results and conclusions provide a foundation for future modeling work and the selection of process parameters to achieve high quality thin shell micro products.
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Hussain, G., and L. Gao. "Fundamental Studies on Incremental Forming of Titanium Sheet-Metal." In ASME 2006 International Manufacturing Science and Engineering Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/msec2006-21015.

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Several aspects of Incremental Forming, an innovative sheet-metal-forming process, were studied. Firstly, an optimal combination of tool and lubricant was explored to form the TA1 (commercial Titanium) sheet-metal parts. Secondly, the effect of the tool diameter on the surface texture of a part was investigated. In addition to this, the influence of the tool diameter on in-plane strain distribution and thickness distribution along a part was also studied. Lastly, experiments were conducted in order to investigate the influence of half-apex angle on thickness distribution along a part to be formed. It has been concluded that the surface coating of sheet-blanks is essential to form the TA1 parts with good surface textures, and the dispersion of MoS2 powder in grease should be rubbed on the coated surface of the sheet-blank to provide lubrication between the tool tip (tip of a surface-hardened HSS tool) and the sheet-blank surface. Furthermore, the tool diameter has no effect on the texture of a formed surface, the deformation mode, and the in-plane strain distribution on a part. It has also been found that the tool diameter does not influence the thickness distribution along a part; rather this is governed by the Sine of half-apex angle of the part to be formed.
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Malhotra, Rajiv, Jian Cao, Feng Ren, Vijitha Kiridena, and Z. Cedric Xia. "Improvement of Geometric Accuracy in Incremental Forming by Using a Squeezing Toolpath Strategy With Two Forming Tools." In ASME 2011 International Manufacturing Science and Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/msec2011-50262.

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Single Point Incremental Forming (SPIF) is plagued by an unavoidable and unintended bending in the region of the sheet between the current tool position and the fixture, which leads to significant geometric inaccuracies. Double Sided Incremental Forming (DSIF) uses two tools, one on each side of the sheet to form the sheet into the desired shape. This work explores the capabilities of DSIF in terms of improving the geometric accuracy as compared to SPIF by using a novel toolpath strategy in which the sheet is locally squeezed between the two tools. Experiments and simulations are performed to show that this strategy can improve the geometric accuracy of the component significantly. An examination of the forming forces indicates that after a certain amount of deformation using this strategy a loss of contact occurs between the bottom tool and the sheet. The effects of this on the geometric accuracy are discussed as well.
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Kulkarni, Shubhamkar, Vijay Sarthy Mysore Sreedhara, and Gregory Mocko. "Heat Assisted Single Point Incremental Forming of Polymer Sheets." In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-60031.

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The objective of this research is to study the improvement in the formability of thermoplastics using heat assisted single point incremental forming. Single point incremental forming is a production process for forming sheet materials without the use of dedicated tooling (dies/molds). The process is an alternative to thermoforming for low volume forming of sheets. It involves forming the final shape through a series of localized incremental deformations. It has been observed that heat assisted techniques have shown an improvement in the formability limits for sheet metals. In this research, this concept has been tested for improving the formability of polymer sheets. Hot air us used to increase the temperature within a localized region in front of the tool. A single point incremental forming device is modified through the development of a specialized tool holder and nozzle which heats the polymer sheet to temperatures higher than the room temperature but below the glass transition temperature of the polymer and applies the forming loads. The results from the experiments are summarized as: i) the formability angle increases of polystyrene from 27 degrees to 46 degrees when comparing room temperature forming to forming at an elevated temperature (170°F–180 °F), ii) a reduction in the forces needed for forming is observed qualitatively, and iii) the surface finish on the formed parts do not show visible change. This demonstrates promise of manufacturing complex shapes from thermoplastic polymer sheets using heat assisted incremental forming. Future research includes 1) simulating the localized deformation of the material to enable process planning, 2) quantifying the forming forces and heat control of the system, and 3) exploring the manufacturing technique to other materials.
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Lingam, Rakesh, C. L. Harikrishnan, I. V. M. Kishan, and N. Venkata Reddy. "Importance of Feature Sequencing in Incremental Forming." In ASME 2015 International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/msec2015-9471.

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Incremental Sheet Forming (ISF) is a flexible forming process suitable for low volume production of sheet metal components. Single Point Incremental Forming (SPIF), which has only one tool forming the geometry, is the simplest variant of incremental forming. Bending of sheet between the component opening and the fixed boundary is unavoidable in SPIF due to the absence of support/backup. Double Sided Incremental Forming (DSIF) has two tools which can be used interchangeably for forming and providing local support. The accuracy of parts formed using DSIF is superior to those formed using SPIF as the unwanted bending is substantially reduced by providing local support. In addition DSIF is capable of forming components with features on both sides of the initial plane of sheet and convex and concave features without additional setup. In ISF, as the deformation progresses, the intended geometry slowly develops, this increases the stiffness of the sheet. While forming multiple features, the forming sequence greatly affects the way stiffness builds-up, which further affects the geometry of formed components. In the present work, an experimental investigation is carried out to demonstrate the affect of forming sequence on the geometries and accuracy of formed component. Results presented show that the feature sequencing greatly affects the geometry and accuracy of formed components.
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Lingam, Rakesh, Anirban Bhattacharya, Javed Asghar, and N. Venkata Reddy. "Compensations for Tool Path to Enhance Accuracy During Double Sided Incremental Forming." In ASME 2015 International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/msec2015-9404.

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Incremental Sheet Metal Forming (ISMF) is a flexible sheet metal forming process that enables forming of complex three dimensional components by successive local deformations without using component specific tooling. ISMF is also regarded as die-less manufacturing process and in the absence of part-specific dies, geometric accuracy of formed components is inferior to that of their conventional counterparts. In Single Point Incremental Forming (SPIF), the simplest variant of ISMF, bending near component opening region is unavoidable due to lack of support. The bending in the component opening region can be reduced to a larger extent by another variant of ISMF namely Double Sided Incremental Forming (DSIF) in which a moving tool is used to support the sheet locally at the deformation zone. However the overall geometry of formed components still has unacceptable deviation from the desired geometry. Experimental observation and literature indicates that the supporting tool loses contact with the sheet after forming certain depth. Present work demonstrates a methodology to enhance geometric accuracy of formed components by compensating for tool and sheet deflection due to forming forces. Forming forces necessary to predict compensations are obtained using force equilibrium method along with thickness calculation methodology developed using overlap that occurs during forming (instead of using sine law). Results indicate that there is significant improvement in accuracy of the components produced using compensated tool paths.
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Zuo, Qiyang, Kai He, Zhigang Sun, Hui Xu, Wei Li, Wei Li, Xiaobing Dang, and Ruxu Du. "A Novel Incremental Bending Process of Complex Curved Sheet Metal." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65262.

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The bending of complex curved sheet metals of ship hull has long been a challenge in shipbuilding yard on account of some inherent defects of the traditional forming processes such as the line heating. This paper presents a novel incremental bending process based on punching to obtain complex curved steel plates in order to take the place of those inefficient traditional forming processes of ship hull. The presented incremental bending process is carried out by a series of stepping punches, so it is also defined as incremental punching in this work. By means of this process, the blank plate that is fixed and held by a flexible supporting system can incrementally be bent to the target shape by a press tool with a planned tool trajectory one step after another. Meanwhile, in order to improve geometric accuracy of the formed work-piece, a 3D scanning feedback system is applied to measure the deformation of the work-piece during the forming process. Three dimensional shape of the formed work-piece can be imaged and rebuilt with a large amount of point cloud data by the 3D scanning feedback system. Then the difference between the rebuilt model of the formed work-piece and the target CAD-model can be acquired, which can be used for feedback control of the forming accuracy if necessary. To validate the presented forming process, an original incremental punching prototype was designed and manufactured, which is mainly composed of a 3-axis CNC machine, a flexible supporting system and a 3D scanning feedback system. A forming experiment of a gradual curvature steel plate was carried out using this prototype and is discussed in detail in this paper in order to demonstrate the feasibility of the proposed incremental bending process of complex curved steel plate.
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