Observations on Orthogonal Cutting Processes - Effect of Friction between Tool and Work Material -

Okida, Junya; Moriguchi, Hideki; Nishioka, Toshihisa; Yoshimura, Hiromi

doi:10.4028/www.scientific.net/kem.389-390.169

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…Figure 15 depicts, the calculated friction coe cient, µ, for the different experiments. The cutting speed produced minor effects on the friction, which may show that the material did not undergo severe thermal softening effects, as described by Okida et al [40], when machining alloy steel. Machining WAAM and HF-WAAM material has reduced the generated friction levels up to 17 %, comparatively to the low-carbon steel, probably due to the re nement effect of the microstructure.…”

Section: Friction Coe Cientmentioning

confidence: 73%

Orthogonal cutting of Wire and Arc Additive Manufactured parts

Fonseca

Vidal

Ferreira

et al. 2022

Int J Adv Manuf Technol

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Wire and Arc Additive Manufacturing (WAAM) is increasingly being used to produce complex and nontraditional geometries that other technologies are not able to create. Finishing operations, as machining, are often required to accomplish the components functionality. However, recent studies suggest that several machining issues arise due to the lack of geometrical tolerances and complex shapes of the manufactured parts, like chattering effects, appropriate work holding selection and component alignment. This work aimed to evaluate if the established scienti c knowledge for machining homogeneous and isotropic materials remains valid for machining WAAM parts.Two different variants of WAAM were analysed, namely, conventional MIG/MAG and hot forging (HF-WAAM).The cutting operations were carried out varying the undeformed chip thickness (UCT) and the cutting speed, using a tool rake angle of 25°. A systematic comparison was conducted between the existing theoretical principles and the obtained practical results of the orthogonal cutting process, where material properties (hardness, grain size, yield strength) and important machining outcomes (cutting forces, speci c cutting energy, friction, shear stress, chip formation and surface roughness) are addressed. Additionally, high-speed camera records were used to evaluate the generated shear angle and chip formation process during the experimental tests.The machinability indicators shown that, through the appropriate cutting parameters, machining forces and energy consumption can be reduced up to 12%, when machining the mechanical improved HF-WAAM material, without compromising the surface quality requirements.

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Section: Friction Coe Cientmentioning

confidence: 73%

Orthogonal cutting of Wire and Arc Additive Manufactured parts

Fonseca

Vidal

Ferreira

et al. 2022

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

Orthogonal Cutting of Wire and Arc Additive Manufactured Parts

Fonseca

Vidal

Ferreira

et al. 2021

Preprint

View full text Add to dashboard Cite

Wire and Arc Additive Manufacturing (WAAM) is increasingly being used to produce complex and non-traditional geometries that other technologies are not able to create. Finishing operations, as machining, are often required to accomplish the components functionality. However, recent studies suggest that several machining issues arise due to the lack of geometrical tolerances and complex shapes of the manufactured parts, like chattering effects, appropriate work holding selection and component alignment. This work aimed to evaluate if the established scientific knowledge for machining homogeneous and isotropic materials remains valid for machining WAAM parts. Two different variants of WAAM were analysed, namely, conventional MIG/MAG and hot forging (HF-WAAM). The cutting operations were carried out varying the undeformed chip thickness (UCT) and the cutting speed, using a tool rake angle of 25°. A systematic comparison was conducted between the existing theoretical principles and the obtained practical results of the orthogonal cutting process, where material properties (hardness, grain size, yield strength) and important machining outcomes (cutting forces, specific cutting energy, friction, shear stress, chip formation and surface roughness) are addressed. Additionally, high-speed camera records were used to evaluate the generated shear angle and chip formation process during the experimental tests. The machinability indicators shown that, through the appropriate cutting parameters, machining forces and energy consumption can be reduced up to 12%, when machining the mechanical improved HF-WAAM material, without compromising the surface quality requirements.

show abstract

Observations on Orthogonal Cutting Processes - Effect of Friction between Tool and Work Material -

Cited by 2 publications

References 5 publications

Orthogonal cutting of Wire and Arc Additive Manufactured parts

Orthogonal cutting of Wire and Arc Additive Manufactured parts

Orthogonal Cutting of Wire and Arc Additive Manufactured Parts

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