6533b7dafe1ef96bd126f6e5
RESEARCH PRODUCT
On the improvement of material formability in SPIF operation through tool stirring action
Gianluca BuffaLivan FratiniDavide Campanellasubject
Work (thermodynamics)Materials scienceMechanical EngineeringIncremental formingAluminum alloysDRX MicrostructureProcess (computing)Mechanical engineeringRotational speedMicrostructureIndustrial and Manufacturing EngineeringAction (physics)Computer Science ApplicationsControl and Systems EngineeringThermocoupleNumerical controlFormabilitySoftwaredescription
Single-point incremental forming (SPIF) is a quite new sheet-forming process which offers the possibility to deform complex parts without dedicated dies using a single-point tool and a standard three-axis CNC machine. The process mechanics enables higher strains with respect to traditional sheet-forming processes, but particular attention must be given to the maximum forming angle. In this paper, a new approach is proposed to enhance the material formability through a localized sheet heating as a consequence of the friction work caused by elevated tool rotational speeds. AA1050-O, AA1050-H24, and AA6082-T6 were utilized, and the reached temperatures were recorded by thermocouples, fixed to the sheet using a metal structure. A significant increase in the material formability was observed for both materials, and new formability curves have been built at the varying of the utilized rotational speed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-08-04 |