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Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Le, Van Sy. "MODELING OF SINGLE POINT INCREMENTAL FORMING PROCESS FOR METAL AND POLYMERIC SHEET." Doctoral thesis, Università degli studi di Padova, 2009. http://hdl.handle.net/11577/3421875.

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Incremental Sheet Forming (ISF) is an innovative forming approach for sheet materials. This process has been promising a flexible, short time, and inexpensive way to form sheet products. The requiring equipments for SPIF process include a hemispherical forming tool and very simple frame to hold firmly a forming sheet. The forming tool is moved along a predefined toolpath which is a series of contour constructed a final shape of product by using numerical controlled technology. The sheet is deformed locally and finished in every layer in which is similar to the layered manufacturing principle

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Martins, Miguel António Batista Esteves. "Project and construction of a single point incremental forming machine." Master's thesis, Universidade de Aveiro, 2011. http://hdl.handle.net/10773/7752.

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Mestrado em Engenharia Mecânica<br>Single Point Incremental Forming is a recent technology that is currently under development. Its applicability is diverse because it allows the attainment of functional parts in sheet metal without great costs. Due to this characteristic, areas such as biomechanics, rapid prototyping and products of customizable features make this process a target of interest. Unfortunately, the means of obtaining parts using single point incremental forming are limited. Usually, CNC machining centers are utilized but due to their cutting-type characteristics, the imp

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Al-Obaidi, Amar Baker Salim. "Induction Assisted Single Point Incremental Forming of Advanced High Strength Steels." Universitätsverlag der Technischen Universität Chemnitz, 2018. https://monarch.qucosa.de/id/qucosa%3A31527.

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Induction Assisted Single Point Incremental Forming (IASPIF) is a die-less hot sheet metal forming. The IASPIF does not apply characteristic complex tooling like those applied in deep drawing and bending. In this thesis, induction heating was used to heat up the sheet while simultaneously forming with a tool. The research goal is to improve the formability of high strength steels by heating. The IASPIF consists of non-complicated set up that allows induction heating to be utilized through the coil inductor moved under the sheet and synchronized with the forming tool that moves on the upper sid

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Afonso, Daniel Gil. "Industrial applicability of single point incremental forming : functional and energetic approach." Doctoral thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/21534.

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Doutoramento em Engenharia Mecânica<br>Incremental sheet forming processes like single point incremental forming have been majorly studied since the beginning of the 2000's. Besides the applications in the prototyping eld, ISF processes can also be used to the manufacture of unique parts and small batches. This possibility has a great potential for speed up new product development and to make products in smaller series economically viable. Also, this capability leads to a new business possibilities, enable the development of exclusive or custom products. However, mainly due to its nove

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GUCCIARDI, Marco. "NEW PERSPECTIVES ON LIGHTWEIGHT SHEET METAL ALLOYS MANUFACTURING BY SINGLE POINT INCREMENTAL FORMING." Doctoral thesis, Università degli Studi di Palermo, 2022. http://hdl.handle.net/10447/533080.

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Arshad, Saad. "Single Point Incremental Forming : A study of Forming Parameters, Forming limits and Part accuracy of Aluminium 2024, 6061 and 7475 alloys." Thesis, KTH, Industriell produktion, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-103006.

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Nowadays there is an increasingly demanding need for the development of agile manufacturing techniques that can easily be adaptable to a constant introduction of new products in the market. Single point incremental forming (SPIF) is a new innovative and feasible solution for the rapid prototyping and the manufacturing of small batch sheet parts. The process is carried out at room temperature (cold forming) and requires a CNC machining centre, a spherical tip tool and a simple support to fix the sheet being formed. This work studied the effects of step size, angle, spindle speed, and feed rate

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Nayak, Ullal Pranav. "Effect of single point incremental forming on the microstructure and mechanical properties of aluminium and steel." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17919.

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Mestrado em Ciência e Engenharia de Materiais<br>Neste trabalho foi investigado o efeito da deformação plástica por estampagem incremental de ponto simples (SPIF) na textura cristalográfica, estrutura de deslocações e propriedades mecânicas de chapas de alumínio, aço com baixo teor em carbono e aço de fase dupla. Foram realizados ensaios de tração nos materiais iniciais para caracterizar as suas propriedades mecânicas. Além disso, foram realizadas análises por difração de eletrões retrodispersados (EBSD), observações por microscopia eletrónica de transmissão (TEM) e cálculos utilizando o mode

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Esmaeilpour, Mohammad Rasoul. "Finite Element Simulation of Single Point Incremental Sheet Forming with Barlat 2004Yield Function, CPFEM, and 3D RVE." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1543170842564928.

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Sena, José Ilídio Velosa de. "Advanced numerical framework to simulate incremental forming processes." Doctoral thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/14809.

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Doutoramento em Engenharia Mecânica<br>The framework of the present work supports the numerical analysis of the Single Point Incremental Forming (SPIF) process resorting to a numerical tool based on adaptive remeshing procedure based on the FEM. Mainly, this analysis concerns the computation time reduction from the implicit scheme and the adaptation of a solid-shell finite element type chosen, in particular the Reduced Enhanced Solid Shell (RESS). The main focus of its choice was given to the element formulation due to its distinct feature based on arbitrary number of integration points

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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 est

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Dobecki, Mateus [Verfasser], Walter Akademischer Betreuer] Reimers, Walter [Gutachter] Reimers, and A. Erman [Gutachter] [Tekkaya. "Röntgenographische Analysen der Umformmechanismen und der Eigenspannungen umgeformter Bleche im Single Point Incremental Forming-Verfahren / Mateus Dobecki ; Gutachter: Walter Reimers, A. Erman Tekkaya ; Betreuer: Walter Reimers." Berlin : Technische Universität Berlin, 2020. http://d-nb.info/1213803535/34.

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Dobecki, Mateus [Verfasser], Walter [Akademischer Betreuer] Reimers, Walter [Gutachter] Reimers, and A. Erman [Gutachter] Tekkaya. "Röntgenographische Analysen der Umformmechanismen und der Eigenspannungen umgeformter Bleche im Single Point Incremental Forming-Verfahren / Mateus Dobecki ; Gutachter: Walter Reimers, A. Erman Tekkaya ; Betreuer: Walter Reimers." Berlin : Technische Universität Berlin, 2020. http://d-nb.info/1213803535/34.

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Ladecký, Tomáš. "Aplikace CNC programovaní na jednobodové tváření." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229044.

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V současné době se zvyšuje potřeba rozvoje agilních výrobních postupů, které lze snadno přizpůsobit neustálému zavádění nových produktů na trh. Jednobodové inkrementální tváření je nový, inovativní a proveditelný tvářecí proces s jednoduchým uspořádáním. Proces se provádí při pokojové teplotě (tváření za studena) a vyžaduje CNC stroj, nástroj s kulovou hlavou a jednoduché příslušenství pro uchycení obrobku plechu. V samotném procesu jde o přírůstkové formování, řízené CNC programem. Plastická deformace je lokalizována pod formovacím nástrojem takže plech je tvářen souhrnem pohybů lokální plast

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Al-Obaidi, Amar Baker Salim [Verfasser], Dirk Akademischer Betreuer] [Gutachter] Landgrebe, Lutz [Gutachter] [Lachmann, and Verena [Gutachter] [Akademischer Betreuer] Kräusel. "Induction Assisted Single Point Incremental Forming of Advanced High Strength Steels / Amar Baker Salim Al-Obaidi ; Gutachter: Dirk Landgrebe, Lutz Lachmann, Verena Kräusel ; Dirk Landgrebe, Verena Kräusel." Chemnitz : Universitätsverlag der Technischen Universität Chemnitz, 2018. http://d-nb.info/1215908733/34.

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ZAHEER, Omer. "RESHAPING AS NOVEL CIRCULAR ECONOMY STRATEGY FOR SHEET METAL BASED END-OF-LIFE COMPONENTS." Doctoral thesis, Università degli Studi di Palermo, 2022. http://hdl.handle.net/10447/533264.

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Making materials consumes about 21% of the global energy demand a specifically metals production, it accounts for about 8% of total global energy consumption. In fact, in the past few decades, the use of lightweight alloys has become increasingly widespread in many major industrial sectors thanks to the weight reduction associated with their applications. Most lightweight materials like aluminum alloys are characterized by high-energy demands primary production cycles that are responsible for a relevant share of the global CO2 emissions. Circular economy strategies such us longer life, more in

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Chiu, Kuan-Hua, and 邱冠樺. "Study on Single Point Incremental Forming of AA-1050 Circular Cup by Using Multi-stage Process." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/46cwby.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>100<br>The paper aims to investigate the aluminum sheet metal (AA1050) forming on the formability and the process limit of circular cup by using single point incremental forming (SPIF) process. The literatures of the previous investigation on high-inclined angle part are mostly in low depth-width ratio, while the paper aims to form a circular cup with a depth-width ratio 1:2 by using multi-stage process to investigate the rounding limit and improve the quality of the cup. In this paper, all experiments were performed on a CNC milling machine in which the experiment

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Lin, Chi-Cheng, and 林啟正. "A Study of Spiral Tool Path Planning and Eccentric Cone Tube Manufacturing Using Single Point Incremental Forming Process." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/fewp5a.

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碩士<br>國立臺北科技大學<br>機電整合研究所<br>102<br>In this paper, the eccentric cone tube process planning was investigated by using single point incremental forming (SPIF) and prefabricated hole cutting operations. The SPIF with iso-parametric spiral tool path was used for the forming of cone surface and hole flange of the eccentric cone tube. An end mill cutter was used to mill the required prefabricated hole before the flange forming process. A variety of the eccentric cone surfaces can be modeled as a ruled surface or Coon’s surface. Then the iso-parametric spiral tool path can be calculated by using the

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Chen, Chia-Yang, and 陳佳陽. "Reverse Multi-Step Single Point Incremental Forming." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/re35y5.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>107<br>A small number of customized production models are the current trend in manufacturing. Compared with traditional stamping, incremental forming is not limited by mold and does not require huge equipment. Therefore, under a small amount of production, the cost of incremental forming is lower than stamping process. On the other hand, changing the shape of model is easier in incremental forming, user only needs to modify the CAD and import into software to generate the toolpath, and then let the machine to work. Nowadays, the technology of incremental forming has

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Suriyaprakan, Premika. "Single point incremental forming and multi-stage incremental forming on aluminium alloy 1050." Doctoral thesis, 2013. http://hdl.handle.net/10216/72577.

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Trabalho de investigação desenvolvido na Thammasat University<br>Tese de Doutoramento. Engenharia Mecânica (Manufacturing, Product Development and Automobile Engineering). Faculdade de Engenharia. Universidade do Porto. 2013

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Suriyaprakan, Premika. "Single point incremental forming and multi-stage incremental forming on aluminium alloy 1050." Tese, 2013. http://hdl.handle.net/10216/72577.

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Trabalho de investigação desenvolvido na Thammasat University<br>Tese de Doutoramento. Engenharia Mecânica (Manufacturing, Product Development and Automobile Engineering). Faculdade de Engenharia. Universidade do Porto. 2013

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Sahu, C. "Upper Bound Analysis of Single Point Incremental Forming." Thesis, 2014. http://raiith.iith.ac.in/800/1/ME12M1009.pdf.

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Most of the conventional sheet metal forming processes uses expensive dies for forming sheet metals into final shape. This increases the cost of production. For eliminating these limitation one can utilize the new die less sheet metal forming process known as incremental sheet metal forming (ISMF). The process involves the use of a single spherical tool to carry out local sheet metal deformation progressively on a CNC milling machine. The controlled movement of the tool enables a 3-dimensional profile to be made. The process can provide rapid prototyping advantages for sheet metal parts

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Lin, P. P. S. "Rigid Body Translation In Multistage Single Point Incremental Forming." Thesis, 2014. http://raiith.iith.ac.in/144/1/me12m1013.pdf.

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Incremental Sheet Metal Forming (ISMF) is an innovative sheet metal forming method which uses a Computer Numerical Controlled (CNC) vertical milling machine & basic tooling. ISMF has the potential to form complex 3D parts without using specific tooling. The formability of sheet metal is better for incremental forming than in conventional sheet metal forming. Even though the formability is higher in ISMF, forming components having higher wall angles is not possible. So multistage ISMF is used in which the required component is formed with various intermediate stages. In this work, an attempt is

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Li, Chien-Hung, and 黎建宏. "Tool Path Planning and Forming Forces Investigations on Single Point Incremental Forming Processes." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/6rev74.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>100<br>In recent years, studies of tool path planning in single point incremental sheet forming (SPIF) were mostly focused on the step-type tool path forming forces. This paper planned two tool path models, step-type tool path model and spiral tool path model, in single point incremental forming operations and investigated the differences of forming forces, finished surface quality, forming limit of wall-angle, thickness and surface roughness between these two path models. This paper used CAD / CAM system to generate the step-type and spiral-type forming paths of p

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Yen, Tzu-Hsiang, and 顏子翔. "Strategy of thickness distribution in multi-stage single-point incremental forming." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/edk6jx.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>107<br>In recent years, sheet metals tend to be customized and produced in small quantities. Traditional stamping requires a lot of cost and time in the production of dies. Incremental forming is highly competitive in customization because it does not require dies. However, the maximum draw angle limits the application of incremental forming. Multi-stage single-point incremental forming can effectively increase the formability of the sheet, i.e., the limitation of maximum forming angle. Nevertheless, tool paths in multi-stage single-point incremental forming are sim

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Adams, David. "Improvements on Single Point Incremental Forming Through Electrically Assisted Forming, Contact Area Prediction and Tool Development." Thesis, 2013. http://hdl.handle.net/1974/8491.

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Single Point Incremental Forming (SPIF) is a die-less sheet metal forming method. Because SPIF does not use custom tooling, this process allows for parts to be made at low cost and short lead times. In this thesis electric current is applied through the tool to alter the formability of samples formed with SPIF. The research goal of this work is to determine if formability is effected by resistive heating alone or if there is some formability change due to the current interacting with the material. An apparatus that allows electrical current to be applied through the tool during forming is desi

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Lin, Zhi-Hua, and 林志樺. "Single Point Incremental Forming of Sheet Metal in Assistance of Ultrasonic Vibration." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/52495538200310542736.

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碩士<br>國立中興大學<br>機械工程學系所<br>104<br>This study attempted to apply ultrasonic vibration to a single point incremental forming process of sheet metal. The material used in experiments was AA1060 aluminum alloy. The experimental test program was mainly focus on the influence of three different process parameter: the diameter of forming tool, the vertical step size between consecutive contours and the assistance of ultrasonic vibration. To investigate quality of the part in this study, the forming force, the distribution of thickness and the roughness of the part are set as the objective. Furthermor

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Wang, Zhi-Wei, and 王旨偉. "A Study of Surface Roughness of Single Point Incremental Forming by Taguchi Method." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/44805210333215357073.

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碩士<br>國立宜蘭大學<br>機械與機電工程學系碩士班<br>99<br>As the single point incremental forming only uses fixtures to clamp sheet metal, it is not confined to the molds. Hence, single point incremental forming not only can reduce the cost, but also can apply to the manufactures of custom-built medical equipment and panel of the auto industry. The surface roughness can reflect the appearance, precision and performance of workpiece. If the surface roughness and precision can promote in one forming process, it will reduce the time and cost for the second forming process. Surface roughness parameters are tool rotat

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McAnulty, Tegan Maree. "Overcoming challenges of prototyping with single point incremental forming through formability and geometric accuracy analysis." Master's thesis, 2019. http://hdl.handle.net/1885/164199.

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With recent developments in rapid prototyping technologies, the automotive industry has been able to move away from costly and inefficient methods of prototyping. In fact, rapid prototyping techniques now exist for nearly all the components in a car, meaning time and money is saved in product development. One exception to this trend, despite their ubiquity in automotive applications, is formed sheet metal components. Single point incremental forming (SPIF) is a sheet metal forming technique with a fast turnaround that uses little to no custom

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Jawale, Kishore Jagannath. "Methodology to characterize plastic flow and fracture in single point incremental sheet metal forming." Doctoral thesis, 2017. https://hdl.handle.net/10216/109652.

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Jawale, Kishore Jagannath. "Methodology to characterize plastic flow and fracture in single point incremental sheet metal forming." Tese, 2017. https://hdl.handle.net/10216/109652.

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Lin, Hong-Chi, and 林宏祈. "Investigation on Thickness Improvement for Aluminum AA1050 Single Point Incremental Sheet Forming Using Taguchi Method." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/9c535m.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>101<br>Drawing and stamping is the major mode to produce the element in traditional metal sheet forming. This method will spend much time simulating the experiment and need to build the mold at the first stage of product development, it will take amount of time and money. Investigate the single point incremental forming (SPIF) method and the thickness of the aluminum alloy sheet (AA1050) is the main purpose of this paper. According to the experimental parameters (punch diameter, the step, feed rate, spindle speed) to search the optimal combination parameters, then

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Kuo, Yin-Hui, and 郭賢輝. "Experimental investigation of sheet metal single point incremental forming by using CNC five-axis machine tool." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/235pya.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>102<br>Conventionally, sheet metal single point incremental forming (SPIF) process was performed on the three-axis CNC milling machines. In this paper, experimental investigation for manufacturing some special geometric shape of sheet metal products such as eccentric cone with incline hole flange, eccentric cone with curve side wall, and varying shape cone tube by using SPIF process on CNC five-axis machine tool were carried out. In addition to three linear axes, five-axis machine tool also possesses two rotational axes. The CNC five-axis machine can control these

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TANG, ZIH-DE, and 湯子德. "A Study on Single Point Incremental Forming of CFRP Composite Plates by a Six Axis Robot." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/5c46ej.

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碩士<br>國立高雄應用科技大學<br>模具工程系<br>106<br>Since the single point incremental forming (SPIF) is not limited by the special mold, it only needs to use the clamp for clamping the sheet, so it can be applied to the field of customized manufacturing in addition to cost reduction. In this paper, we study the SPIF of carbon fiber composites by mechanical arm, and control the material temperature, forming tool diameter, vertical step and forming limit angle as forming parameters. The experimental results show that the material is formed with a diameter of 8 mm and a vertical step of 2 mm and is near the gla

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BRANKER, KADRA. "A STUDY OF ENERGY, CARBON DIOXIDE EMISSIONS AND ECONOMICS IN MACHINING: MILLING AND SINGLE POINT INCREMENTAL FORMING." Thesis, 2011. http://hdl.handle.net/1974/6897.

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A simple model that includes energy and carbon dioxide (CO2) emissions in the economics of machining is proposed, which has been published in the highly respected and cited journal, Annals of CIRP (International Academy for Production Engineering). This is a timely analysis in current government discussions on a proposed carbon tax or a carbon cap and trade regime and greater energy efficiency. The new cost model is based on life cycle analysis methodology for the initial part production. An illustrative example is given showing that the cheapest electrical grid should not be chosen, if it al

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Haw, Yang, and 楊浩. "A Study of Tool Path and Sheet Thickness Distribution of Axisymmetric Cup in Single Point Incremental Forming." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/88913854187496866342.

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碩士<br>國立宜蘭大學<br>機械與機電工程學系碩士班<br>100<br>The single point incremental forming, compared to the traditional sheet forming, is not confined by the molds. It only uses a fixture to clamp the sheet. Hence, it not only can reduce the cost, but also can apply to the customized medical equipment and the manufactures of auto panel. This study plans different tool paths for axisymmetric cup to explore the forming characteristic in the single point incremental forming. Meanwhile, this study not only verifies the SPIF stress theory, but also develops gradient theory to compute the inclined angle between th

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Fatima, Mariam. "Development of an actuation system for a specialized fixture: providing two degrees of freedom for single point incremental forming." Thesis, 2013. http://hdl.handle.net/10155/311.

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In this thesis, an actuation system is developed for a Two-Axis Gyroscopic (TAG) adapter. This adapter is a fixture with two auxiliary axes which is used for the Single Point Incremental Forming (SPIF) technique to enhance a three-axis mill to have five-axis capabilities. With five-axis mill capabilities, variable angles between line segments of the toolpath and the tool can be obtained. To achieve specialized angles between a line segment and the SPIF tool, the sheet is rotated. Inverse kinematic equations for the TAG adapter are derived to calculate the required rotations for the TAG adapter

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Hamilton, Kelvin Allan Samuel. "FRICTION AND EXTERNAL SURFACE ROUGHNESS IN SINGLE POINT INCREMENTAL FORMING: A study of surface friction, contact area and the ‘orange peel’ effect." Thesis, 2010. http://hdl.handle.net/1974/5425.

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This work studied the effects of step size, angle, spindle speed, and feed rate on the external surface roughening, orange peel effect, observed in single point incremental forming (SPIF). Experimental results were used to estimate models to categorize the extent of orange peel roughening based on visual inspection and on surface roughness measurements. Tests were performed at very high rotational speeds and feed rates and showed various influences on surface roughness, thickness distribution, and grain size. Friction at the tool-sheet interface was also studied with a completely instrumente

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