Study the Effect of Multilayer Single Point Incremental Forming on Residual Stresses for Bottom Plates

Abed, Aseel Hamad; Bedan, Aqeel Sabree; Noori, Mohanad Faeq

doi:10.22153/kej.2017.02.004

Cited by 1 publication

(4 citation statements)

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“…ANOVA model used to know the contribution of rotational speed, feed rate, and vertical depth with respect to residual stresses was (63.7, 4.3, and 32) % respectively. Aseel Hamad Abed and et al [10] presented the multilayer SPIF process and using top plate with three thicknesses (0.5, 0.7, and 0.9) mm, different types of lubrication used between two plates to predict the influence of these variables on residual stresses in bottom plate. The results explained an inversely relationship between the thickness of top plate and residual stresses.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Forming frame was utilized to fixate the blank on the CNC milling machine table. Forming frame is consisting of several components as shown in the figure (4). The Forming tools that used in this work consist of three different geometries with different sizes to study the effect of these tools on the residual stresses.…”

Section: Forming Frame and Forming Toolsmentioning

confidence: 99%

“…The processes parameters and levels for the ball end, hemispherical and the flat with round corner tools are illustrated in the tables (3-7). Figure (10) presents the relationship between the results extracted from experimental work.…”

Section: Design Of Experimentalmentioning

confidence: 99%

“…SPIF is a progressive and adaptable bed sheet metal-forming technology that uses layered manufacturing basis. That changes the part geometry data for a several parameters of 2D layers, and after that the plastic-local deformation is done layer-by-layer over the CNC machine motions of the simple forming tool to manufacture products with complicated shapes as demonstrated in figure (1) [3,4].…”

Section: Introductionmentioning

confidence: 99%

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An Investigation Study of Tool Geometry in Single Point Incremental Forming (SPIF) and their effect on Residual Stresses Using ANOVA Model

Bedan¹,

Habeeb²

2019

alkej

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Incremental forming is a flexible sheet metal forming process which is performed by utilizing simple tools to locally deform a sheet of metal along a predefined tool path without using of dies. This work presents the single point incremental forming process for producing pyramid geometry and studies the effect of tool geometry, tool diameter, and spindle speed on the residual stresses. The residual stresses were measured by ORIONRKS 6000 test measuring instrument. This instrument was used with four angles of (0º,15º,30º, and 45º) and the average value of residual stresses was determined, the value of the residual stress in the original blanks was (10.626 MPa). The X-ray diffraction technology was used to measure the residual stresses. The sheet material used was Aluminum alloy (AL1050) with thickness of (0.9 mm). The experimental tests in this work were done on the computer numerical control (CNC) vertical milling machine. The extracted results from the single point incremental forming process were analyzed using analysis of variance (ANOVA) to predict the effect of forming parameters on the residual stresses. The optimum value of the residual stresses (55.024 MPa) was found when using the flat end with round corner tool and radius of (3 mm), wall angle of (55°) and a rotational speed of the tool of (800 rpm). The minimum value of the residual stresses (24.389MPa) was found when using hemispherical tool with diameter of (12 mm), wall angle of (45°) and a rotational speed of the tool of (800 rpm).

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Section: Literature Reviewmentioning

confidence: 99%

Section: Forming Frame and Forming Toolsmentioning

confidence: 99%

Section: Design Of Experimentalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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