scholarly journals A Computation of Consumption Power of Single Point Incremental Forming Technology

2016 ◽  
Author(s):  
LE KHANH ◽  
LE KHANH ◽  
LE THANH ◽  
NGUYEN TAN ◽  
NGUYEN THANH
Keyword(s):  
Incremental Forming ◽  
Single Point ◽  
Single Point Incremental Forming ◽  
Forming Technology

scholarly journals A recommendation of computation of normal streeses in single point incremental forming technology

2014 ◽  
Vol 17 (1) ◽  
pp. 21-28
Author(s):  
Dien Khanh Le ◽  
Nam Thanh Nguyen ◽  
Binh Thien Nguyen
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Incremental Forming ◽  
Single Point ◽  
Finite Element Method Simulation ◽  
Recent Decade ◽  
Work Piece ◽  
Single Point Incremental Forming ◽  
Forming Technology ◽  
Element Method

Single Point Incremental Forming (SPIF) has become popular for metal sheet forming technology in industry in many advanced countries. In the recent decade, there were lots of related studies that have concentrated on this new technology by Finite Element Method as well as by empirical practice. There have had very rare studies by pure analytical theory and almost all these researches were based on the formula of ISEKI. However, we consider that this formula does not reflect yet the mechanics of destruction of the sheet work piece as well as the behavior of the sheet in reality. The main aim of this paper is to examine ISEKI’s formula and to suggest a new analytical computation of three elements of stresses at any random point on the sheet work piece. The suggested formula is carefully verified by the results of Finite Element Method simulation.

Analytical Computing Stresses and Strains in Single Point Incremental Forming

2019 ◽  
Vol 825 ◽  
pp. 129-139
Author(s):  
Le Khanh Dien ◽  
Le Khanh Tan ◽  
Van Thanh Nguyen ◽  
Huy Bich Nguyen ◽  
Thanh Nam Nguyen
Keyword(s):  
Incremental Forming ◽  
New Technology ◽  
Single Point ◽  
Fem Simulation ◽  
Recent Decade ◽  
Analytical Framework ◽  
Single Point Incremental Forming ◽  
Normal Stresses ◽  
Forming Technology ◽  
Almost All

Nowadays, Single Point Incremental Forming (SPIF) has become popular for metal sheet forming technology in industry in many advanced countries. In the recent decade, many relative studies have concentrated on this new technology of forming sheet by Finite Element Method (FEM) as well as by empirical way. There were very rare studies by pure analytical computing and P.A.F. Martins et al. under a title “Theory of single point incremental forming” performed almost all these researches were based on the analytical framework of SPIF in 2008. After careful studying on this research, we found out its light illogical result: the stresses inside of a random point in the workpiece sheet are constant and not related to the coordinate of the formed point of the sheet. Therefore, it cannot explain the mechanism of rupture and tear of the sheet that is really a serious restriction of the SPIF technology nowadays. This paper dedicates to suggest a new version of pure analytical computing the normal stresses at a random formed point in the sheet that could explain the tear mechanism and a FEM simulation was also carried out also to prove the conviction of the recommended formula.

Channel Mill’s Top Shell Prototyping with the Single Point Incremental Forming Technology of Sheet Metal

2011 ◽  
Vol 120 ◽  
pp. 94-101
Author(s):  
Gang Liu
Keyword(s):  
Sheet Metal ◽  
Incremental Forming ◽  
Single Point ◽  
Business Case ◽  
Single Point Incremental Forming ◽  
Forming Technology ◽  
Shell Design ◽  
Top Shell

First of all, the theory and application of the Single Point Incremental Forming (SPIF) technology of sheet metal are introduced at the beginning of this paper; second, several traditional forming technologies of channel mill’s top shell are compared; third, The advantages of SPIF Technology of Sheet Metal in channel mill’s top shell prototyping are analyzed; finally, the steps and methods of channel mill’s top shell design and prototyping with SPIF technology are elaborated through a real business case.

Recommendation of a Measure for Enhancing the Precision of Dimensions of Foil Products in Single Point Incremental Forming Technology

2015 ◽  
Vol 656-657 ◽  
pp. 479-483 ◽  
Author(s):  
Khanh Dien Le ◽  
Tan Hung Nguyen ◽  
Thien Binh Nguyen ◽  
Thanh Son Le ◽  
Huy Bich Nguyen ◽  
...  
Keyword(s):  
Feed Rate ◽  
Incremental Forming ◽  
Single Point ◽  
Single Point Incremental Forming ◽  
Forming Technology ◽  
Sheet Materials ◽  
Forming Parameters ◽  
Plastic Materials ◽  
Almost All

Single Point Incremental Forming (SPIF) has become a popular technology of forming sheet materials in the recent decades. However, the springback phenomenon, an inborn property of almost all elasto-plastic materials, reduces the precision of dimensions of the products by the finished forming session. This paper attempts to find out a measure to minimize this unwanted obstacle by using both empirical and simulating methods in order to define the relations of springback values among the forming parameters such as diameter of the forming tool, its revolution per minute, its velocity and its feed rate. Analyzing these equations to extract the appropriate parameters of forming for enhancing the precision of SPIF products is the final aim of this paper.

scholarly journals RESEARCH ON THE FORMING ANGLE OF A1050-H14 ALUMINUM MATERIAL PROCESSED BY USING SINGLE POINT INCREMENTAL FORMING TECHNOLOGY (SPIF)

2009 ◽  
Vol 12 (16) ◽  
pp. 72-79
Author(s):  
Nam Thanh Nguyen ◽  
Tuan Dinh Phan ◽  
Cuong Van Vo ◽  
Dien Khanh Le ◽  
Binh Thien Nguyen ◽  
...  
Keyword(s):  
Incremental Forming ◽  
Single Point ◽  
Metal Sheet ◽  
Single Point Incremental Forming ◽  
Regression Equations ◽  
Cnc Milling ◽  
Cnc Milling Machine ◽  
Forming Technology ◽  
Forming Angle ◽  
Tool Diameter

Single Point Incremental Forming - SPIF is the recent manufacturing process of metal sheet forming by drafting a non-cutting edge sphere-tip tool on a clamped metal sheet. The formability of metal sheet in SPIF is considered by the forming angle (ψ)- the maximum draft angle so that the material is not torn. The experimental research on A1050-H14 aluminum sheet on Bridge Port VMC500-16 CNC milling machine in C1 workshop of the HCMUT in order to find out the regression equations to predict the maximum forming angle in the relation with four most important technology parameters in SPIF: size of the step down z, forming feed vxy, spindle speed n, forming tool diameter d.

Formability of Tailored Welded Blanks in Single Point Incremental Forming Process

2014 ◽  
Vol 979 ◽  
pp. 339-342 ◽  
Author(s):  
Kittiphat Rattanachan ◽  
K. Sirivedin ◽  
Chatchapol Chungchoo
Keyword(s):  
Laser Welding ◽  
Incremental Forming ◽  
Single Point ◽  
Weld Line ◽  
Welding Process ◽  
Metal Sheet ◽  
Single Point Incremental Forming ◽  
Forming Process ◽  
Forming Technology ◽  
Dieless Forming

This paper is focused on single point incremental forming (SPIF) of a tailored welded blanks (TWBs) that produced by laser welding process. The SPIF process is a new dieless forming technology, which is a fast and economic solution to prototyping a metal sheet product. In the past, the SPIF researches carried out with the homogeneous metal sheet blank, but now a day, the demand of TWBs is still increased especially for an automotive industry. The aim of this research is to study the formability on the weld line of laser welding TWBs (SUS 304 and St 37) by the SPIF process.

Desktop Single Point Incremental Forming System

2010 ◽  
Author(s):  
Shuping Chen ◽  
Yang Wang ◽  
Maohua Chen
Keyword(s):  
Thin Shell ◽  
Force Feedback ◽  
Incremental Forming ◽  
Single Point ◽  
Superplastic Forming ◽  
Mechanical Transmission ◽  
Prototype System ◽  
Single Point Incremental Forming ◽  
Forming Technology ◽  
Design And Manufacture

This paper proposes a novel thin shell curved surface forming method by dieless single point forming technology embodying the thought of the parallel running for both design and manufacture. And a sheet metal superplastic forming prototype system with a heterogeneous master-slave manipulator by force-reflecting control has been developed. The system mainly consists of mechanical transmission components, servo system, online optical scaler for the measurement and the path planning of the forming tool. The final ideal forming experiment has physically testified the feasibility of the mutual forming method for the shell sample of a panda model. This paper brings up the tentative idea of real object modification with the use of heptic force-feedback.

Economical and Ecological Aspects of Single Point Incremental Forming Versus Deep Drawing Technology

2007 ◽  
Vol 344 ◽  
pp. 931-938 ◽  
Author(s):  
Aleš Petek ◽  
Gašper Gantar ◽  
Tomaz Pepelnjak ◽  
Karl Kuzman
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Deep Drawing ◽  
Metal Forming ◽  
Incremental Forming ◽  
Single Point ◽  
Single Point Incremental Forming ◽  
Forming Process ◽  
Forming Technology ◽  
Ecological Aspects

In contemporary industrial production the ecological aspects have increasingly important role in selection of sheet metal forming process. To produce sheet metal parts with minimal environmental burdening the shortening of forming processes including the procedures for production of appurtenant forming tools as well as decrease use of lubricant is prerequisite. The ecological aspects have to be considered also already in developmental phase where the forming technology is evaluated in digital environment with FEM simulations. In addition, particularly in small and medium batch production the geometrically complex parts are difficult to form economically with conventional forming processes like deep drawing or stretching. Therefore, new concepts like hydro-mechanical forming or incremental sheet metal forming were developed. In order to select the optimal forming process the production costs as well as the environmental aspects like lubrication, noise, pollution and energy per produced part have to be considered. The paper is focused towards the comparison of conventional deep drawing (DD) process aimed for forming the pyramid-shaped part with single point incremental forming technology (SPIF). The economical and ecological aspects affecting the successful forming by both concepts are determined. Comparative evaluation was established in order to present advantages and drawbacks of each analysed technology.

The Application of Single Point Incremental Forming Technology of Sheet Metal in Bus Prototyping

2011 ◽  
Vol 338 ◽  
pp. 46-55 ◽  
Author(s):  
Gang Liu
Keyword(s):  
Sheet Metal ◽  
Incremental Forming ◽  
Single Point ◽  
Business Case ◽  
Single Point Incremental Forming ◽  
Forming Technology

First of all, the theory, advantages and application of the Single Point Incremental Forming (SPIF) technology of sheet metal are introduced at the beginning of this paper; second, the traditional forming technologies of bus’s face and back in Chinese bus industry are compared; third, The advantages of the SPIF Technology of Sheet Metal in Bus Prototyping are analyzed; finally, the steps and methods of bus’s face design and prototyping with SPIF technology are elaborated through a real business case.

Improve the Micro-hardness of Single Point Incremental Forming Product Using Magnetic Abrasive Finishing

2020 ◽  
Vol 38 (8A) ◽  
pp. 1137-1142
Author(s):  
Baqer A. Ahmed ◽  
Saad K. Shather ◽  
Wisam K. Hamdan
Keyword(s):  
Vickers Hardness ◽  
Feed Rate ◽  
Incremental Forming ◽  
Single Point ◽  
Single Point Incremental Forming ◽  
Step Size ◽  
Coil Current ◽  
Magnetic Abrasive Finishing ◽  
Finishing Process ◽  
Abrasive Finishing

In this paper the Magnetic Abrasive Finishing (MAF) was utilized after Single Point Incremental Forming (SPIF) process as a combined finishing process. Firstly, the Single Point Incremental forming was form the truncated cone made from low carbon steel (1008-AISI) based on Z-level tool path then the magnetic abrasive finishing process was applied on the surface of the formed product. Box-Behnken design of experiment in Minitab 17 software was used in this study. The influences of different parameters (feed rate, machining step size, coil current and spindle speed) on change in Micro-Vickers hardness were studied. The maximum and minimum change in Micro-Vickers hardness that achieved from all the experiments were (40.4 and 1.1) respectively. The contribution percent of (feed rate, machining step size, coil current and spindle speed) were (7.1, 18.068, 17.376 and 37.894) % respectively. After MAF process all the micro surface cracks that generated on the workpiece surface was completely removed from the surface.

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