Five-axis milling vibration attenuation of freeform thin-walled part by eddy current damping

Butt, M.A.; Yang, Yiqing; Pei, Xitong; Liu, Qiang

doi:10.1016/j.precisioneng.2017.11.010

Cited by 40 publications

(18 citation statements)

References 11 publications

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“…STS turning is significantly affected by the inertia of a machine tool slide and the response speed of a motor, and the dynamic response speed of a machine tool is low, which would not be suitable for the machining of a complex spherical surface [12,13]. Compared with turning, multi-axis milling is more suitable for the machining of spherical complex surfaces with millimeter-scale characteristics, such as pits and round chamfers [14,15]. Multi-axis milling requires more than three axes to work together.…”

Section: Introductionmentioning

confidence: 99%

Study of the tool path generation method for an ultra-precision spherical complex surface based on a five-axis machine tool

Xing

Zhao

Cui

et al. 2021

Int J Adv Manuf Technol

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The improvement of ultra-precision machining technology has significantly boosted the demand for the surface quality and surface accuracy of the workpieces to be machined. However, the geometric shapes of workpiece surfaces cannot be adequately manufactured with simple plane, cylindrical, or spherical surfaces because of their different applications in various fields. In this research, a method was proposed * Corresponding Author.

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Section: Introductionmentioning

confidence: 99%

Study of the tool path generation method for an ultra-precision spherical complex surface based on a five-axis machine tool

Xing

Zhao

Cui

et al. 2021

Int J Adv Manuf Technol

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“…Currently, several approaches are used to ensure vibration stability of milling [2]: analytical and numerical stability analysis methods [4]- [7], [20]; time integration of equations of motion of the system during milling [8]- [11], [19]; damping of vibrations based on improving individual machine tool parts capable of influencing the dynamic performance of the "tool-part" system as a whole [12], [13]; methods of online detection of chatter using systems with feedback [2], [3].…”

Section: Introductionmentioning

confidence: 99%

Ensuring the chatter stability of milling by optimizing the workpiece stock

Kuts¹,

Kiselev²,

Voronov³

2021

Vib. proced.

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The paper considers a new technique for increasing the dynamic stability of the dynamics of milling flexible parts. The technique is based on the formation of a uniform stock of the workpiece for the finish milling. The paper proposes an optimization algorithm for the automated calculation of the stock distribution based on the sensitivity analysis method. The ratio of the natural frequencies of the flexible workpiece is used as the objective function of the optimization algorithm. The developed technique was tested on a numerical example.

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“…Due•to the lack of dynamic stability of some of these solutions, different damping features have been implemented in the system in order to improve the machining process. Thus, different active features based on the use of eddy currents [13,14], pivot mechanism [15,16] and piezoelectric dampers [17] have been studied. These solutions are cost efficient and their implementation is limited to certain applications.…”

Section: Introductionmentioning

confidence: 99%

Influence of Elastomer Layers in the Quality of Aluminum Parts on Finishing Operations

Rubio-Mateos

Rivero

Ukar

et al. 2020

Metals

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In finishing processes, the quality of aluminum parts is mostly influenced by static and dynamic phenomena. Different solutions have been studied toward a stable milling process attainment. However, the improvements obtained with the tuning of process parameters are limited by the system stiffness and external dampers devices interfere with the machining process. To deal with this challenge, this work analyzes the suitability of elastomer layers as passive damping elements directly located under the part to be machined. Thus, exploiting the sealing properties of nitrile butadiene rubber (NBR), a suitable flexible vacuum fixture is developed, enabling a proper implementation in the manufacturing process. Two different compounds are characterized under axial compression and under finishing operations. The compression tests present the effect of the feed rate and the strain accumulative effect in the fixture compressive behavior. Despite the higher strain variability of the softer rubber, different milling process parameters, such as the tool feed rate, can lead to a similar compressive behavior of the fixture regardless the elastomer hardness. On the other hand, the characterization of these flexible fixtures is completed over AA2024 floor milling of rigid parts and compared with the use of a rigid part clamping. These results show that, as the cutting speed and the feed rate increases, due to the strain evolution of the rubber, the part quality obtained tend to equalize between the flexible and the rigid clamping of the workpiece. Due to the versatility of the NBR for clamping different part geometries without new fixture redesigns, this leads to a competitive advantage of these flexible solutions against the classic rigid vacuum fixtures. Finally, a model to predict the grooving forces with a bull-nose end mill regardless of the stiffness of the part support is proposed and validated for the working range.

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Five-axis milling vibration attenuation of freeform thin-walled part by eddy current damping

Cited by 40 publications

References 11 publications

Study of the tool path generation method for an ultra-precision spherical complex surface based on a five-axis machine tool

Study of the tool path generation method for an ultra-precision spherical complex surface based on a five-axis machine tool

Ensuring the chatter stability of milling by optimizing the workpiece stock

Influence of Elastomer Layers in the Quality of Aluminum Parts on Finishing Operations

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