Evaluation of modelling approaches for machine tool design

Kono, Daisuke; Lorenzer, Thomas; Weikert, Sascha; Wegener, Konrad

doi:10.1016/j.precisioneng.2009.09.003

Cited by 43 publications

(24 citation statements)

References 11 publications

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“…developed Axis Construction Kit (ACK) in order to evaluate the configuration of machine tools. The ACK supports rigid body simulations and simple elastic body simulations [4]. Anayet et al (2009) presented a consecutive procedure in experimental and analytical modal analysis applied in structural dynamic evaluation processes of a vertical machining centre [5].…”

Section: Introductionmentioning

confidence: 54%

Rigid body dynamics in optimization of the machine tool vibroisolation

Slavković¹,

Veg

Dučić³

et al. 2015

Teh. vjesn.

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Original scientific paper Modern design of the machine tool treats the suspending parts as a crucial element of the effective vibration isolation. Therefore the suspending items are specifically developed and subjected to extensive tests before being applied on real objects. These elements ensure accurate levelling and appropriate vibration damping. Usually selection of inadequate support element causes intensive disturbing effects in machining. The paper presents dynamics analysis of the machine tool suspended on flexible mountings. The overall analysis is conceived on a rigid body dynamics. This method enables selection of an optimal supporting configuration. Further on such an effective suspension design prevents a need for expensive monitoring of the dynamic characteristics of the mechanical system, i.e. machine tool and supports. The paper explores dynamics of a real, flexibly supported machine tool. Results are obtained with the assistance of the "SUPPORT" software. Finally the theoretical and computational statements are approved throughout extensive site measurements on the machine tool body with appropriate instrumentation. Keywords: dynamics analysis; experiment; machine tool; software; transfer function Dinamika sustava krutih tijela u optimizaciji vibroizolacije alatnih strojevaIzvorni znanstveni članak Suvremeni razvoj alatnih strojeva tretira oslonce kao presudne elemente u vibroizolaciji. Zbog toga su oslonci posebno razvijeni i podvrgnuti opsežnim testovima prije primjene na realnim objektima. Oni osiguravaju precizno niveliranje i amortizaciju vibracija. Neodgovarajući izbor oslonaca uzrokuje neželjene efekte u procesu obrade. Rad prezentira analizu dinamike alatnog stroja oslonjenog na fleksibilne oslonce. Ukupna analiza je koncipirana na dinamici krutih tijela. Ova metoda omogućava izbor optimalne konfiguracije oslanjanja. Ovako efikasan razvoj oslanjanja eliminira potrebu za skupim nadzorom strojnog sustava, tj. alatnog stroja i oslonca. U radu je dana analiza dinamike fleksibilno oslonjenog alatnog stroja u realnim uvjetima. Rezultati su dobiveni pomoću softvera SUPPORT. Konačno, teorijski i računarki rezultati potvrđeni su opsežnim mjerenjima na alatnom stroju, odgovarajućom mjernom opremom.

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Section: Introductionmentioning

confidence: 54%

Rigid body dynamics in optimization of the machine tool vibroisolation

Slavković¹,

Veg

Dučić³

et al. 2015

Teh. vjesn.

View full text Add to dashboard Cite

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“…An extensive overview of different simulation approaches and FEA types (linear/non-linear static, dynamic, thermal) is given by Altintas et al [9]. Several approaches describe the elastic behavior of machine structures by mass-spring-damper models [35,52], (flexible) multi-body models [32,156,178], transfer functions or state-space representations [34,204], which can be derived by modal reduction from numerical calculations or obtained from experiments in order to increase computational efficiency. Jedrzejewski et al presented a hybrid model including the finite element method (FEM) and the finite difference method for analyzing the thermal, stiffness and durability aspects of machines [134].…”

Section: Simulation Approachesmentioning

confidence: 99%

Materials in machine tool structures

et al. 2015

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“…(3) or eqn. (4). Because those are nonlinear polynomial functions, the gradient search method can be easily applied for solving this optimization problem [13,14].…”

Section: Formulations Of Optimizationmentioning

confidence: 99%

“…The optimal design problem is to find minimum weight or volume of machine tool with suitable stiffness and natural frequency. The finite element method (FEM) is popular and widely used for machine tools simulation [3,4]; hence this study used FEM to get static and dynamic response of machine tool for optimization procedure.…”

Section: Introductionmentioning

confidence: 99%

Structural Optimization for Column of Gantry Machine Tool Using Response Surface Method

Twu¹,

Yu²

2015

Proceedings of the 2015 International Conference on Electrical, Automation and Mechanical Engineering

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As the first part of an ongoing integrated project for developing a desktop gantry grinding machine tool, the structural optimization of column part is taken as the focus of the study. The thickness, height, and width of column are the design variables. The objective of optimization is to minimize volume while keeping the deformation of spindle tip smaller than the desired maximum value and the 2nd natural frequency below the given limit. Based on results of static and dynamic analyses obtained from finite element method, the response surface method with factorial design was utilized to create the metamodel for optimization. Two kinds of response surface model with two kinds of factorial design were used for comparison. The gradient search method was applied to the response surface model for optimization. The optimal structure of machine tool made the volume and the second natural frequency both decreasing 13% while the y-displacement of spindle tip were confined to required range. The result shows the successful application of response surface method with carefully chosen factorial design on structural optimization problem.

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Evaluation of modelling approaches for machine tool design

Cited by 43 publications

References 11 publications

Rigid body dynamics in optimization of the machine tool vibroisolation

Rigid body dynamics in optimization of the machine tool vibroisolation

Materials in machine tool structures

Structural Optimization for Column of Gantry Machine Tool Using Response Surface Method

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