A method for the identification of the specific force coefficients for mechanistic milling simulation

Gonzalo, Óscar; Beristain, Jokin; Jauregi, Haritz; Sanz, C.

doi:10.1016/j.ijmachtools.2010.05.009

Cited by 115 publications

(36 citation statements)

References 13 publications

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“…• Cutting forces are modelled by means of a mechanistic model where the tangential, radial and axial forces depend linearly on the chip thickness and the depth of cut [33].…”

Section: Basics Of the Linear Modelmentioning

confidence: 99%

Chatter avoidance in the milling of thin floors with bull-nose end mills: Model and stability diagrams

Campa

Lacalle

Celaya

2011

International Journal of Machine Tools and Manufacture

122

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The milling of thin parts is a high added value operation where the machinist has to face the chatter problem. The study of the stability of these operations is a complex task due to the changing modal parameters as the part losses mass during the machining and the complex shape of the tools that are used. The present work proposes a methodology for chatter avoidance in the milling of flexible thin floors with a bull-nose end mill. First, a stability model for the milling of compliant systems in the tool axis direction with bullnose end mills is presented. The contribution is the averaging method used to be able to use a linear model to predict the stability of the operation. Then, the procedure for the calculation of stability diagrams for the milling of thin floors is presented. The method is based on the estimation of the modal parameters of the part and the corresponding stability lobes during the machining. As in thin floor milling the depth of cut is already defined by the floor thickness previous to milling, it is proposed the use of stability diagrams that relate the tool position along the tool-path with the spindle speed. Hence, the sequence of spindle speeds that the tool must have during the milling can be selected. Finally, this methodology has been validated by means of experimental tests.

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“…• Cutting forces are modelled by means of a mechanistic model where the tangential, radial and axial forces depend linearly on the chip thickness and the depth of cut [33].…”

Section: Basics Of the Linear Modelmentioning

confidence: 99%

Chatter avoidance in the milling of thin floors with bull-nose end mills: Model and stability diagrams

Campa

Lacalle

Celaya

2011

International Journal of Machine Tools and Manufacture

122

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show abstract

“…Edge force coefficients, Ke, cover other effects such as friction, rubbing, ploughing, and chip deformation [24]. Cutting forces in a linear cutting model are typically expressed by shear (F 1c , F 2c ) and flank contact (F 1e , F 2e ) ploughing or edge components.…”

Section: The Forces Modelmentioning

confidence: 99%

“…For materials combinations not supported by a database, simple cutting experiments can provide necessary data [13,[18][19][20][21][22], while in the works [23][24] numerical simulations are used.…”

Section: Introductionmentioning

confidence: 99%

Cutting forces prediction: The experimental identification of orthogonal cutting coefficients

Popović¹,

Tanović²,

Ehmann³

2017

FME Transaction

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“…In this paper the cutting coefficients were identified using the orthogonal cutting mechanics which was used in predicting the cutting forces and torque. Different methods for determining the influence on cutting surface [15] and the edge forces are discussed by Gonzalo et al [16] and Popov et al [17], such as the direct method, the comparison method and the extrapolation method on the zero uncut chip thickness, based on which the forces on the front face do not influence the edge forces.…”

Section: Identification Of Cutting Coefficientsmentioning

confidence: 99%

Prediction of tapping forces and torque for 16MnCr5 alloyed steel

2016

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Original scientific paper Preliminary note The paper presents cutting tools geometry analysis for the active part of straight fluted taps and a prediction model for tapping forces and torque. To derive the relation between the angles that define the geometry of the tools, the orientation matrices for taps coordinate systems are defined. Along with analytical model setup, the taps are additionally modelled in CAD package based on main parameters taken from the external database. The cutting coefficients for material combination for the workpiece (16MnCr5) and tool (HSS-E, EMo5Co5) were identified using the orthogonal cutting mechanics which is needed for prediction procedure. Proposed prediction model for tapping forces and torque of the machine tap, in addition to the effects of the major cutting edges, includes an action from minor cutting edges, too. Results of experimental verification for the proposed procedures and models are presented in this paper. Keywords: CAD; cutting forces; prediction; tool geometry; tapping Predviđanje sila i momenta urezivanja navoja u legiranom čeliku 16MnCr5Prethodno priopćenje U radu je prikazana analiza geometrije aktivnog dijela rezne oštrice ureznika sa ravnim žljebovima i model za predviđanje sila i momenta urezivanja navoja. Da bi se dobio odnos između kutova koji definiraju geometriju alata, određene su orijentacijske matrice za koordinatne sustave ureznika. Pored postavljanja analitičkog modela, ureznici su modelirani u CAD paketu s glavnim parametrima iz vanjske baze podataka. Koeficijenti rezanja za kombinaciju materijala obratka (16MnCr5) i alata (HSS-E, EMo5Co5) identificirani su pomoću mehanike ortogonalnog rezanja. Predloženi model za predviđanje sila i momenta urezivanja strojnim ureznikom, osim učinka glavnih reznih oštrica, uključuje također i akcije pomoćnih oštrica. Prikazani su rezultati eksperimentalne provjere predloženih postupaka, kao i usporedba s predviđenim vrijednostima sila i momenta.

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A method for the identification of the specific force coefficients for mechanistic milling simulation

Cited by 115 publications

References 13 publications

Chatter avoidance in the milling of thin floors with bull-nose end mills: Model and stability diagrams

Chatter avoidance in the milling of thin floors with bull-nose end mills: Model and stability diagrams

Cutting forces prediction: The experimental identification of orthogonal cutting coefficients

Prediction of tapping forces and torque for 16MnCr5 alloyed steel

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