Development of a novel 5-DOF controlled maglev local actuator for high-speed electrical discharge machining

He, Dongjue; Morita, Hiroki; Zhang, Xiaoyou; Shinshi, Tadahiko; Nakagawa, Takayuki; Sato, Tatsushi; Miyake, H.

doi:10.1016/j.precisioneng.2009.11.002

Cited by 15 publications

(9 citation statements)

References 9 publications

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“…In the model, inner radius is r(1), outer radius is r(2), the Z coordinate of the bottom is Z(1), and the Z coordinate of the top surface is Z(2). The initial angle is u(1), and the termination angle is u (2).…”

Section: Theoretical Modeling Of Electromagnetic Characteristics Of the 2-dof Electromagnetic Actuatormentioning

confidence: 99%

“…where A r is the magnetic vector potential in radial direction, A u is the magnetic vector potential in angel direction, A z is the magnetic vector potential in axial direction, AA = r 2 + r 02 À 2rr 0 cos (u À u 0 ) + (z À z(j)) 2 , and BB = r 2 + r 02 À 2rr 0 cos (u À u(j)) + (z À z 0 ) 2 . Substituting equations ( 9)-( 11) into equation ( 1), the expressions for magnetic induction intensity in radial and axial direction are…”

Section: Theoretical Modeling Of Electromagnetic Characteristics Of the 2-dof Electromagnetic Actuatormentioning

confidence: 99%

“…Gravity acceleration is less than 10 23 g in the micro-gravity environment, and the vibration on the components and the equipments of the spacecraft is approximately 0.01-30 Hz of the low-frequency range. 2 The noncontact vibration isolation device can isolate the vibration of low frequency or ultralow frequency between the platform and the payload. So, it can ensure that the payloads always work in a super static environment.…”

Section: Introductionmentioning

confidence: 99%

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Research on the 2-degree-of-freedom electromagnetic actuator in space

Liu

Yang

et al. 2018

Advances in Mechanical Engineering

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To meet space science experiments in micro-gravity environment, micro-spacecraft vibration isolation technology was developed in recent years. A new kind of 2-degree-of-freedom electromagnetic actuator based on Lorentz principle was developed in this article. The composition and working principle of the actuator were introduced, the parametric model for electromagnetic actuator was established, the structural optimization was carried out with the help of genetic algorithm in the MATLAB toolbox, and the final optimal structural parameters were obtained. For achieving the magnetic induction intensity in radial and axial directions, theoretical model for electromagnetic characteristics of the 2-degree-of-freedom actuator was established, and the expression for electromagnetic force was obtained. A static electric-magnetic coupling simulation of the whole actuator and also the experiments for measuring magnetic induction and magnetic force were carried out, and the correctness of theoretical model was verified.

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Section: Theoretical Modeling Of Electromagnetic Characteristics Of the 2-dof Electromagnetic Actuatormentioning

confidence: 99%

Section: Theoretical Modeling Of Electromagnetic Characteristics Of the 2-dof Electromagnetic Actuatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Research on the 2-degree-of-freedom electromagnetic actuator in space

Liu

Yang

et al. 2018

Advances in Mechanical Engineering

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“…Another well-known work was development of a 5 DOF controlled maglev local actuator for high-speed micro-EDM drilling. It has been concluded that application of MLA for rotation of spindle up to 2000 min −1 could reduce shaft rotational friction with simultaneous feed of discharge current to the electrode [6]. Yang et al recently used a spherically tipped electrode tool with 150-μm diameter and cylindrical shank with 100-μm diameter for enhancement of accuracy in ECDM process.…”

Section: Introductionmentioning

confidence: 99%

State of the art micro-EDM drilling using centrifugal servo-mechanism for workpiece actuation

Amouzegar¹,

Ahmadi

Donyavi

2015

Int J Adv Manuf Technol

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In this experimental investigation, a centrifugal servo-mechanism has been used for actuation of the cylindrical components such as nozzles and dies during micro-EDM drilling process. With simultaneous centrifugal actuation of the workpiece proportional to the electrode rotation, it is possible to apply concentric roughing and eccentric finishing strategies. For improvement of micro-hole quality, eccentric workpiece rotation has been developed as a finishing strategy which promotes flushing condition, removes hole inclination, produces core-free blind holes, and reduces machining time in micro-EDM drilling process.

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“…1, and reported on the positioning and rotational performance of the levitated spindle shaft (19) . Utilizing a magnetic coupling mechanism, the MLA can provide translational motion with a rapid response and rotation of the electrode, and the discharge voltage can be fed to the electrode without disturbing the motion of the electrode.…”

Section: Introductionmentioning

confidence: 99%

Improving the Speed of Small Deep Hole Electrical Discharge Machining by Combining Rotation of the Electrode with a Rapid-Response

Shinshi

Zhang³

et al. 2011

JAMDSM

Self Cite

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In this paper, we report on the co-operative control of a 5-DOF controlled magnetically-levitated (maglev) local actuator (MLA) combined with a conventional electrical discharge machine, which we developed as a means to increasing the electrical discharge machining (EDM) speed for small deep holes. The MLA enables the electrode to be rotated as well as to be rapidly positioned. Compared to conventional EDM without electrode rotation, the machining speeds in machining φ0.5×4mm and φ1×4mm through holes were increased by 125% and 337%, respectively, using the EDM machine combined with the MLA without electrode rotation；while with electrode rotation, the co-operatively controlled combination increased the machining speed by a maximum of 343% in machining φ0.5×4mm through holes at 800rpm and 433% in machining φ1×4mm through holes at 600rpm.

show abstract

Development of a novel 5-DOF controlled maglev local actuator for high-speed electrical discharge machining

Cited by 15 publications

References 9 publications

Research on the 2-degree-of-freedom electromagnetic actuator in space

Research on the 2-degree-of-freedom electromagnetic actuator in space

State of the art micro-EDM drilling using centrifugal servo-mechanism for workpiece actuation

Improving the Speed of Small Deep Hole Electrical Discharge Machining by Combining Rotation of the Electrode with a Rapid-Response

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