A new damping modelling approach and its application in thin wall machining

Adetoro, O.B.; Wen, P.H.; Sim, W.M.

doi:10.1007/s00170-010-2658-7

Cited by 13 publications

(8 citation statements)

References 34 publications

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“…This observation indicates that the revolution speed has more influence on springback than the depth of cut, machining type, and milling type; however, its effect is negligible in comparison with the feed rate. Tables [4][5][6] show that springback decreases as the tool initial distance is reduced. As the forming tool approaches the bottom of the wall, the bending radius decreases during forming, and the magnitude of plastic strain increases, which in turn results in decrease of springback.…”

Section: Influence Of Machining Parametersmentioning

confidence: 99%

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The effects of machining residual stresses on springback in deformation machining bending mode

Sedeh

Ghaei

2021

Int J Adv Manuf Technol

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Hybrid machining-forming technology is a combination of two thin-structural machining and incremental forming manufacturing processes. A group of complex geometry parts in which a thick region is connected to a thin wall region can be manufactured through this technology with certain advantages. The parts made by this technology require less raw material compared to the ones created by means of machining. The major problem with this technology is the dimensional and geometric inaccuracy of its products which is mainly due to springback. The main purpose of this research was to study the effects of machining parameters and residual stresses induced by the machining primary stage on the subsequent springback after the forming stage. It was found by experiments that the parameters of cutting speed, axial depth of cut, mode of milling and milling path had a minor effect on springback. However, the workpiece fracture during the forming stage was observed to be sensitive to the prior machining feed rate. Both finite element simulations and experimental results confirmed that the compressive machining residual stresses increased with an increase in the machining feed rate. The compressive residual stresses postponed the onset of fracture at the workpiece lower end during the forming stage. Therefore, we could approach the forming tool closer to the bottom of the wall during forming and, as a result, springback decreased considerably.

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Section: Influence Of Machining Parametersmentioning

confidence: 99%

“…This is one of the advantages of thin-wall machining. Cost reduction and higher accuracy of thin-wall machining is outstanding and these integrated parts are being used in different industries [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

The effects of machining residual stresses on springback in deformation machining bending mode

Sedeh

Ghaei

2021

Int J Adv Manuf Technol

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“…As alternative methods, the structural dynamic modification method and finite element analysis (FEA) models were widely used to determine the varying FRFs of the machining system [66][67][68][69][70][71]. Seguy et al [72] investigated the relationship between chatter and surface roughness evolution in thin-wall milling.…”

Section: Prediction Of the Appearance Of Chattermentioning

confidence: 99%

A state-of-art review on chatter and geometric errors in thin-wall machining processes

Pan

et al. 2021

Journal of Manufacturing Processes

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“…The researchers optimized the machining parameters by ANOVA regression technique, manufactured high-quality alloy thin walls with a thickness of 5mm [9]. However, the thin wall is easy to deform under the external force and vibration exerted by the cutting tool when using traditional machining methods such as drilling and boring [10]. In addition, in order to drilling small hole on di cult-to-machine materials, the special cutting tool or bit need to be fabricated with good wear resistance, leading to high processing cost and increasing the manufacturing di culty of exible joints [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Orbital EDM for Double-Hole Thin Wall of Integrated Flexible Joint

Liu

et al. 2021

Preprint

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The thin neck structure of integrated flexible joint is the key factor to realize high-precision navigation in dynamically tuned gyroscope. The thin neck structure is composed of two adjacent circular holes and the thin wall between the two holes. The thin wall is easy to deform under the external force and vibration exerted by the tool when using traditional machining methods such as drilling and boring, and the cutting tools are easily to be damaged for the machining of small holes in superhard materials, inducing high processing cost. Aiming at these problems, the machining method of double-hole thin wall in the step-by-step orbital electrical discharge machining (EDM) with a high rotation speed electrode is proposed. The procedure for EDM of double-hole flexible thin wall is designed, and the process parameters of each step machining are optimized using orthogonal experiment and signal-to-noise ratio analysis. The machining experiments of double-hole thin wall of 3J33B material are proceed using the optimized parameters. The results show that the hole diameter of the double-hole flexible thin wall is 2 mm, the hole depth is 8mm, and the average thickness of the thin wall is about 46.5 μm. The thickness range between the measured point and the average is 1.55 μm, that compared with average thickness of 46.5 μm, the error is less than 3%, the overall thickness is uniform relatively.

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A new damping modelling approach and its application in thin wall machining

Cited by 13 publications

References 34 publications

The effects of machining residual stresses on springback in deformation machining bending mode

The effects of machining residual stresses on springback in deformation machining bending mode

A state-of-art review on chatter and geometric errors in thin-wall machining processes

Investigation on Orbital EDM for Double-Hole Thin Wall of Integrated Flexible Joint

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