Development of Machine Components with Controllable Dynamic Behavior

Peklenik, J.; Jurkovič, Jože

doi:10.1016/s0007-8506(07)63086-8

Cited by 4 publications

(5 citation statements)

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“…Fiber reinforced and composite materials provide a very good ratio of mechanical strength to density [144,167,224] (Fig. 31).…”

Section: Fiber Reinforced and Composite Materialsmentioning

confidence: 99%

“…[126] the influence of clamping effects on the dynamic characteristics of composite machine tool structures was studied and a new clamping approach using a metal core or sleeve was introduced. Peklenik studied design variations of composite plate structures with trapezoid, rectangular and circular supporting profiles for an exemplary application in a spindle box [224]. The trapezoidal showed the highest bending and torsional stiffness.…”

Section: Fiber Reinforced and Composite Materialsmentioning

confidence: 99%

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Materials in machine tool structures

et al. 2015

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“…Fiber reinforced and composite materials provide a very good ratio of mechanical strength to density [144,167,224] (Fig. 31).…”

Section: Fiber Reinforced and Composite Materialsmentioning

confidence: 99%

Section: Fiber Reinforced and Composite Materialsmentioning

confidence: 99%

Materials in machine tool structures

et al. 2015

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“…They have a broad range of applications; in particular they are suitable to improve the stiffness and reliability of constructions, absorbing energy during blasts and impacts [ 35 , 36 , 37 , 38 , 39 ]. The composite materials reinforced by carbon fibres (CFRP)) are particularly interesting for applications in machine tool structures due to their ratio of mechanical strength to density [ 40 , 41 ]. CFRP materials consist of a binding matrix system and a reinforcement of fibres or particles.…”

Section: Introductionmentioning

confidence: 99%

Vibration Damping Analysis of Lightweight Structures in Machine Tools

et al. 2017

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The dynamic behaviour of a machine tool (MT) directly influences the machining performance. The adoption of lightweight structures may reduce the effects of undesired vibrations and increase the workpiece quality. This paper aims to present and compare a set of hybrid materials that may be excellent candidates to fabricate the MT moving parts. The selected materials have high dynamic characteristics and capacity to dampen mechanical vibrations. In this way, starting from the kinematic model of a milling machine, this study evaluates a number of prototypes made of Al foam sandwiches (AFS), Al corrugated sandwiches (ACS) and composite materials reinforced by carbon fibres (CFRP). These prototypes represented the Z-axis ram of a commercial milling machine. The static and dynamical properties have been analysed by using both finite element (FE) simulations and experimental tests. The obtained results show that the proposed structures may be a valid alternative to the conventional materials of MT moving parts, increasing machining performance. In particular, the AFS prototype highlighted a damping ratio that is 20 times greater than a conventional ram (e.g., steel). Its application is particularly suitable to minimize unwanted oscillations during high-speed finishing operations. The results also show that the CFRP structure guarantees high stiffness with a weight reduced by 48.5%, suggesting effective applications in roughing operations, saving MT energy consumption. The ACS structure has a good trade-off between stiffness and damping and may represent a further alternative, if correctly evaluated.

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“…They have a broad range of applications; in particular they are suitable to improve the stiffness and reliability of constructions, absorbing energy during blasts and impacts [35][36][37][38][39]. The composite materials reinforced by carbon fibres (CFRP)) are particularly interesting for applications in machine tool structures due to their ratio of mechanical strength to density [40,41]. CFRP materials consist of a binding matrix system and a reinforcement of fibres or particles.…”

Section: Introductionmentioning

confidence: 99%

Vibration Damping Analysis of Lightweight Structures in Machine Tools

Aggogeri

Borboni

Merlo

et al. 2016

Preprint

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Abstract:The dynamic behaviour of a machine tool (MT) directly influences the machining performance. The adoption of lightweight structures may reduce the effects of undesired vibrations and increase the workpiece quality. This paper aims to present and compare a set of hybrid materials that may be excellent candidates to fabricate the MT moving parts. The selected materials have high dynamic characteristics and capacity to dampen mechanical vibrations. In this way, starting from the kinematic model of a milling machine, this study evaluates a number of prototypes made of Al foam sandwiches (AFS), Al corrugated sandwiches (ACS) and composite materials reinforced by carbon fibres (CFRP). These prototypes represented the Z-axis ram of a commercial milling machine. The static and dynamical properties have been analysed by using both finite element (FE) simulations and experimental tests. The obtained results show that the proposed structures may be a valid alternative to the conventional materials of MT moving parts, increasing machining performance. In particular, the AFS prototype highlighted a damping ratio that is 20 times greater than a conventional ram (e.g., steel). Its application is particularly suitable to minimize unwanted oscillations during high-speed finishing operations. The results also show that the CFRP structure guarantees high stiffness with a weight reduced by 48.5%, suggesting effective applications in roughing operations, saving MT energy consumption. The ACS structure has a good trade-off between stiffness and damping and may represent a further alternative, if correctly evaluated.

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Development of Machine Components with Controllable Dynamic Behavior

Cited by 4 publications

References 1 publication

Materials in machine tool structures

Materials in machine tool structures

Vibration Damping Analysis of Lightweight Structures in Machine Tools

Vibration Damping Analysis of Lightweight Structures in Machine Tools

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