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Paper Information

Journal:   MODARES MECHANICAL ENGINEERING   MARCH 2017 , Volume 16 , Number 12 ; Page(s) 665 To 674.
 
Paper: 

TOOL FRICTIONAL STIR EFFECT ON DIMENSIONAL ACCURACY AND FORMABILITY IN SINGLE POINT INCREMENTAL FORMING AT HIGH ROTATIONAL SPEEDS

 
 
Author(s):  TAHERKHANI ABOLFAZL, BASTI ALI*, NARIMANZADEH NADER, JAMALI ALI
 
* DEPARTMENT OF MECHANICAL ENGINEERING, FACULTY OF ENGINEERING, UNIVERSITY OF GUILAN, RASHT, IRAN
 
Abstract: 

Single point incremental forming is a new and flexible method for 3D parts production of sheet metal.
In this way, a hemispherical tool forms incrementally, the sheet being clamped in perimeter. Because of the nature of localized deformation in this process, the formability is higher and forming forces are lower as compared to traditional sheet metal forming process. However, in this method dimensional accuracy is somewhat low due to spring back and bending that occurs in boundaries. Recently, the incremental forming process using frictional heat has been developed. In this research, the experimental effect of generated heat by friction stir of the tool on dimensional accuracy in components of AA3105 sheet has been studied at high rotational speeds. By this method, due to friction movements of tool, the temperature of formation area rises while fixing the general temperature of sheet by spraying cooling liquid. Then, the sheet has low strength in contact region with tool while it has high strength in other areas. As a result, the force imposed on the sheet as well as the undesirable plastic deformation will decrease. Also, by decreasing the yielding stress, elastic strain and spring back decrease as well. An increase in formability because of softening of forming area is another contribution of this strategy. This idea has been studied via production of some parts of truncated-pyramid geometry and changing rotational speed from 1000 to 7000 RPM. The results show that at speed higher than 3000 RPM, formability and dimensional accuracy of the parts increase.

 
Keyword(s): SINGLE POINT INCREMENTAL FORMING, LOCAL HEATING, TOOL ROTATION SPEED, DIMENSIONAL ACCURACY
 
 
References: 
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Citations: 
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+ Click to Cite.
APA: Copy

TAHERKHANI, A., & BASTI, A., & NARIMANZADEH, N., & JAMALI, A. (2017). TOOL FRICTIONAL STIR EFFECT ON DIMENSIONAL ACCURACY AND FORMABILITY IN SINGLE POINT INCREMENTAL FORMING AT HIGH ROTATIONAL SPEEDS. MODARES MECHANICAL ENGINEERING, 16(12 ), 665-674. https://www.sid.ir/en/journal/ViewPaper.aspx?id=573033



Vancouver: Copy

TAHERKHANI ABOLFAZL, BASTI ALI, NARIMANZADEH NADER, JAMALI ALI. TOOL FRICTIONAL STIR EFFECT ON DIMENSIONAL ACCURACY AND FORMABILITY IN SINGLE POINT INCREMENTAL FORMING AT HIGH ROTATIONAL SPEEDS. MODARES MECHANICAL ENGINEERING. 2017 [cited 2021July31];16(12 ):665-674. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=573033



IEEE: Copy

TAHERKHANI, A., BASTI, A., NARIMANZADEH, N., JAMALI, A., 2017. TOOL FRICTIONAL STIR EFFECT ON DIMENSIONAL ACCURACY AND FORMABILITY IN SINGLE POINT INCREMENTAL FORMING AT HIGH ROTATIONAL SPEEDS. MODARES MECHANICAL ENGINEERING, [online] 16(12 ), pp.665-674. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=573033.



 
 
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