Processing Metal Sheets by SPIF and Analysis of Parts Quality

Radu, Crina; Cristea, Ion

doi:10.1080/10426914.2012.746702

Cited by 49 publications

(29 citation statements)

References 10 publications

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“…These results coincide with those obtained by Hussain, Lin & Hayat [48] (greater pitches provoke greater deviations), Maqbool & Bambach [49] (lower pitches provoke lower geometrical accuracy) and Radu & Cristea [50] (high values of the feed-rate lead to a low-dimensional accuracy).…”

supporting

confidence: 90%

Manufacturing of Non-Stick Molds from Pre-Painted Aluminum Sheets via Single Point Incremental Forming

et al. 2018

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Featured Application: In this work we propose a method for deforming a pre-coated metal sheet via SPIF. The influence of the pitch and feed-rate on the dimensional precision has been studied. This work is of interest for companies dedicated to the manufacture of molds for the agri-food sector, which can directly manufacture prototypes or short series by this system. Abstract:The process of single point incremental formation (SPIF) awakens interest in the industry of mold manufacturing for the food industry. By means of SPIF, it is possible to generate short series of molds or mold prototypes at low cost. However, these industries require such molds to be functional (non-sticky) and to have an adequate geometry accuracy. This study presents a technique that enables direct manufacturing of molds from pre-coated sheets with non-stick resins. It has also studied the influence of two technological variables in the process (feed-rate and pitch) for different geometrical parameters of the mold. Low values of these variables result in a lower overall error in the profile obtained. However, in order to obtain greater detail in particular parameters (angles, depth), it is necessary to use higher values of feed-rate and pitch.

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supporting

confidence: 90%

Manufacturing of Non-Stick Molds from Pre-Painted Aluminum Sheets via Single Point Incremental Forming

et al. 2018

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“…In this section, the results presented in a previous work [14] related to the inaccuracy of parts processed by SPIF are confronted with the current results, in order to inspect if a cause-effect relationship between them FIGURE 6.-Residual stresses distribution as a function of the working parameters: (a) residual stresses distribution as a function of the tool diameter (Dz ¼ 0.5 mm, x ¼ 1,000 rot=min, n ¼ 1,500 mm=min), (b) residual stresses distribution as a function of the vertical step of tool (d ¼ 10 mm, x ¼ 500 rot=min, n ¼ 1,500 mm=min), (c) residual stresses distribution as a function of spindle speed (d ¼ 6 mm, Dz ¼ 0.5 mm, n ¼ 1,500 mm=min), and (d) residual stresses distribution as a function of the feed rate (d ¼ 6 mm, Dz ¼ 0.05 mm, x ¼ 1,000 rot=min) (color figure available online).…”

Section: Correlation Of Residual Stresses With the Parts Accuracymentioning

confidence: 92%

The Effect of Residual Stresses on the Accuracy of Parts Processed by SPIF

Radu

Tâmpu

Cristea

et al. 2013

Materials and Manufacturing Processes

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The aim of the present work was to investigate the residual stresses distribution within parts processed by single point incremental forming (SPIF) as a function of the working parameters and to determine its influence on the parts accuracy. The study was performed for a double frustum of pyramid made by 304 stainless steel. An experimental analysis was first conducted by using the strain-rosette method. Since the method allowed determining the residual stresses only locally, a numerical model was then elaborated to inspect the distribution of residual stresses throughout the whole part. It was found that a favorable state of residual stresses and implicitly a good accuracy of parts can be obtained when small values of tool diameter and tool vertical steps, respectively high values of feed rate and spindle speed, are used.

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“…This die-less process is still limited in manufacturing industry due to lack of information about the effecting process variables like wall angle, tool diameter and sheet thickness etc. [12][13]. This work focuses on studying influence of sheet thickness, wall angle and tool diameter on axial peak forces on AA2024-O sheets.…”

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confidence: 99%

Investigation of Process Variables on Forming Forces in Incremental Sheet Forming

Kumar¹,

Gulati²,

Kumar³

2018

IJET

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Abstract-Manufacturing of small batch size products and prototypes are not economical using conventional forming processes as these processes require dedicated and highly specialized equipments such as forming presses, dies, and punches. Incremental Sheet Forming (ISF) process has been confirmed as quiet economical process for rapid prototyping and batch type production. In this work, process variables are investigated on axial peak forces on AA2024-O sheets. A strain gauge based dynamometer has been used to record axial peak forces during incremental process. Combination of higher wall angle and higher tool diameter leads to larger axial forces which can be limitation of the capacity of the machine tool and forming tools used in the process. Higher sheet thickness not only requires larger forming forces to form the components but also increases formability of the material.

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Processing Metal Sheets by SPIF and Analysis of Parts Quality

Cited by 49 publications

References 10 publications

Manufacturing of Non-Stick Molds from Pre-Painted Aluminum Sheets via Single Point Incremental Forming

Manufacturing of Non-Stick Molds from Pre-Painted Aluminum Sheets via Single Point Incremental Forming

The Effect of Residual Stresses on the Accuracy of Parts Processed by SPIF

Investigation of Process Variables on Forming Forces in Incremental Sheet Forming

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