Consideration of additive manufacturing supports for post-processing by end milling: a hybrid analytical–numerical model and experimental validation

Didier, Paul; Coz, Gaël Le; Robin, Guillaume; Lohmuller, Paul; Piotrowski, Boris; Moufki, Abdelhadi; Laheurte, Pascal

doi:10.1007/s40964-021-00211-4

Cited by 6 publications

(5 citation statements)

References 37 publications

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“…These elementary stress components, the cutting edge force coefficients, are therefore valid for a cutting speed, a tool geometry, and given friction. For an elementary edge of one of the teeth of the tool, the specific cutting coefficients K t , K r, and K a respectively correspond to the tangential, radial, and axial directions, in the local coordinate system of the analytical model [22]. During the chip formation, additional shearing takes place in the tertiary deformation zone at the flank of the cutting edge; this mechanism is known as the plowing or rubbing process.…”

Section: Analytical Modeling Of Cutting Forcesmentioning

confidence: 99%

“…It is noticeable that the manufactured structures will present differences due to certain topological deviations. These calculated equivalent mechanical properties need to be corrected by a calibration procedure based on experimental data and therefore a digital registration [22]. The calibration procedure considered the average manufactured truss diameters and the result of the procedure function of the type of structure is proposed in Table 1.…”

Section: Consideration Of Manufacturing Supports: Homogenization Proc...mentioning

confidence: 99%

“…A hybrid analytical-numerical strategy to choose and validate the design of the support structures taking into account post-processing by milling is used. To obtain a fast and usable digital tool, a specific methodology previously was proposed in [22]. In this contribution, an evolution of the model allows taking into account a more complex machining trajectory.…”

Section: Introductionmentioning

confidence: 99%

“…Fig.4. According to the geometrical parameters of the milling operation (on the right), the hybrid analytical-numerical coupling in 3D activates elements corresponding to the cutting edge at time t (on the left) from[22].…”

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confidence: 99%

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Post-processing of additive manufactured parts: a numerical strategy applied in maxillary implantology

Didier¹,

Coz

Piotrowski

et al. 2022

Matériaux & Techniques

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To obtain a functional part from additive manufacturing (AM) technologies, some surfaces require post-processing by machining. An approach is developed using additive manufacturing supports as a clamping device for the milling operation. A model combining an analytical approach to determine the cutting forces with a finite element model (FEM) to predict the dynamical response of the workpiece-supports system is proposed. The complex structure of the supports is homogenized with a simplified geometry with equivalent stiffness and mechanical properties. A case study from the biomedical field is proposed: the finishing operation of a custom-made maxillary reconstruction plate is simulated. A parametric study is proposed with: (1) two different lattice geometries used as support structures; (2) up and down milling; (3) different depths of cut.

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Section: Analytical Modeling Of Cutting Forcesmentioning

confidence: 99%

Section: Consideration Of Manufacturing Supports: Homogenization Proc...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Post-processing of additive manufactured parts: a numerical strategy applied in maxillary implantology

Didier¹,

Coz

Piotrowski

et al. 2022

Matériaux & Techniques

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“…To reduce the experimental cost and time constraints, it is necessary to conduct a finite element numerical analysis to overcome the experimental limitations and better explain the necessary methods of the experimental mechanism [ 17 ]. P. Didier et al performed end milling tests on Ti6Al4V parts produced using SLM additive manufacturing and verified the consistency of the cutting force signals between the experiments and the simulation [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Research on the Cutting Force and Serrated Chips in Ultra-Precision Micro-Grooving of SLM Ti6Al4V Alloy

et al. 2023

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Selective laser melting (SLM) has significant advantages in the near net shape manufacturing of metal parts with complex geometries. However, SLM parts usually have problems such as poor surface quality and low dimensional accuracy, which require post-processing. This paper focuses on the research around the influence of ultra-precision micro-grooving the SLM Ti6Al4V alloy on the cutting force and serrated chips. The influence of the processing parameters on the cutting force and surface processing quality was analyzed in detail, and the cutting simulation model of the SLM Ti6Al4V alloy was established. The formation process of the serrated chip was successfully simulated, and the experiments verified the reliability of the established model. The research results show that the dynamic cutting force and surface processing quality are mainly related to the depth of cut, and the two trends are consistent. It is also shown that the serrated chip begins on the free surface of the workpiece and propagates deeply in the shear zone, forming a shear band, and its serrated nodules move upward and forward to form periodic serrated chips.

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Restriktive Methoden

Lachmayer

Ehlers

Lippert

2022

Entwicklungsmethodik Für Die Additive Fertigung

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Consideration of additive manufacturing supports for post-processing by end milling: a hybrid analytical–numerical model and experimental validation

Cited by 6 publications

References 37 publications

Post-processing of additive manufactured parts: a numerical strategy applied in maxillary implantology

Post-processing of additive manufactured parts: a numerical strategy applied in maxillary implantology

Research on the Cutting Force and Serrated Chips in Ultra-Precision Micro-Grooving of SLM Ti6Al4V Alloy

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