Use of Magnetorheological Fluids for Vibration Reduction on the Milling of Thin Floor Parts

Díaz-Tena, E.; Lacalle, Luís Norberto López de; Campa, Francisco J.; Bocanegra, D.L. Chaires

doi:10.1016/j.proeng.2013.08.252

Cited by 20 publications

(11 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Regarding the damping, eddy current modules have been proven to be a reliable alternative for obtaining a nearly-ideal and adjustable viscous damping [18,28,29]. The use of electrorheological and magnetorheological fluids to simultaneously control the stiffness and damping of the device has also been investigated [31], with application over vibration attenuation in thin walled part milling as well [32,33]. Finally, it is also worth mentioning the use of piezoelectric shunts for semi-active damping purposes [34][35][36].…”

Section: Semi-active Tuneable Clamping Table: Concept and Benefitsmentioning

confidence: 99%

Self-Tuning Algorithm for Tuneable Clamping Table for Chatter Suppression in Blade Recontouring

et al. 2021

View full text Add to dashboard Cite

The production and repair of blades for aerospace engines and energy turbines is a complex process due their inherently low stiffness and damping properties. The final recontouring operation is usually performed by milling operations where regenerative chatter is one of the main productivity limiting factors. With the objective of avoiding specific stiffening fixtures for each blade geometry, this paper proposes a semi-active tuneable clamping table (TCT) based on mode tuning for blade machining. The active mode of the device can be externally controlled by means of a rotary spring and eddy current damping modules. Its in-series architecture allows damping to be introduced to the critical mode of the thin-walled part without any direct contact in the machining area and enables a more universal clamping. Its chatter suppression capabilities are maximized by means of a novel self-tuning algorithm that iteratively optimizes the tuning for the measured chatter frequency. The benefits of the iterative algorithm are validated through semidiscretization and initial value time-domain simulations, showing a clear improvement in blade recontouring stability compared to regular broad-bandwidth tuning methods.

show abstract

Section: Semi-active Tuneable Clamping Table: Concept and Benefitsmentioning

confidence: 99%

Self-Tuning Algorithm for Tuneable Clamping Table for Chatter Suppression in Blade Recontouring

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Stiffening devices, opposite to active damping, add an extra device to the flexible component such as mass compensation system [136], magnetorheological fluids [47,137] or low melting alloys [138]. Their main advantages are the simplicity of their design and their easy implementation.…”

Section: Industrial Approachmentioning

confidence: 99%

“…Trying to increase the rigidity of the part, Diaz et al [137] investigated the use magnetorheological fluids (MRF) to prevent instabilities during thin-floor parts machining. These types of fluids have the ability to change from liquid to a semi-solid state due to the action of a magnetic field.…”

Section: Industrial Approachmentioning

confidence: 99%

Thin-Wall Machining of Light Alloys: A Review of Models and Industrial Approaches

et al. 2019

View full text Add to dashboard Cite

Thin-wall parts are common in the aeronautical sector. However, their machining presents serious challenges such as vibrations and part deflections. To deal with these challenges, different approaches have been followed in recent years. This work presents the state of the art of thin-wall light-alloy machining, analyzing the problems related to each type of thin-wall parts, exposing the causes of both instability and deformation through analytical models, summarizing the computational techniques used, and presenting the solutions proposed by different authors from an industrial point of view. Finally, some further research lines are proposed.

show abstract

“…In the case of hydrostatic lubrication, the flowrate and pressure in a basic test bench by magnetic field under variable external loads were explored (Hesselbach and Abel-Keilhack, 2003). The same authors studied posteriorly the vibrational response of the bearings as active dampers (Dı´az-Tena et al, 2013;Guldbakke and Hesselbach, 2006). Valves (or restrictors) with magnetic fluids for hydrostatic bearings determine the pressure drop in function of flowrate and applied magnetic field (Songjing et al, 2002).…”

Section: Active Hybrid Lubricated Bearings With Magnetic Fluidsmentioning

confidence: 99%

Actively lubricated hybrid journal bearings based on magnetic fluids for high-precision spindles of machine tools

Urreta

Aguirre

Kuzhir

et al. 2019

Journal of Intelligent Material Systems and Structures

View full text Add to dashboard Cite

The research work reported in this article is focused on the use of magnetic fluids as active lubricant for improving the performance of hybrid journal bearings, with application to high-precision machine tools. Prototype design was optimized following numerical computation of Reynolds equation and computational fluid dynamics calculations, in both cases with Herschel–Bulkley model for the magnetorheological fluid. This fluid (LORD Corp. MRF 122-2ED) was experimentally characterized in detail. The improvement of the hydrodynamic effect in journal bearings was demonstrated with 50% higher load capacity and stiffness, mainly at half of shaft eccentricity 0.4 < ε < 0.7. Active hydrostatic lubrication achieved quasi-infinite stiffness within working limits (load and speed), at low frequencies. For high dynamic response, the active lubrication based on magnetorheological valves did not show good response. The feasibility of using magnetic fluids for developing high performance machine tool spindles and the validity of the simulation models was demonstrated experimentally.

show abstract

Use of Magnetorheological Fluids for Vibration Reduction on the Milling of Thin Floor Parts

Cited by 20 publications

References 7 publications

Self-Tuning Algorithm for Tuneable Clamping Table for Chatter Suppression in Blade Recontouring

Self-Tuning Algorithm for Tuneable Clamping Table for Chatter Suppression in Blade Recontouring

Thin-Wall Machining of Light Alloys: A Review of Models and Industrial Approaches

Actively lubricated hybrid journal bearings based on magnetic fluids for high-precision spindles of machine tools

Contact Info

Product

Resources

About