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AssigneeGuangdong University of Technology
InventorsJisheng Pan, Qiusheng Yan, Weiqiang Gao, Peng Yu
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Provided is a self-sharpening polishing device with magnetorheological flexible polishing pad formed by dynamic magnetic field and polishing method thereof. The device includes a polishing disc revolution mechanism and a multi-magnetic-pole synchronous rotary drive mechanism, the polishing disc revolution mechanism including a transmission shaft motor, a transmission shaft, a transfer disc, an eccentric shaft fixing disc, a cup-shaped polishing disc and a transmission shaft transmission mechanism, the multi-magnetic-pole synchronous rotary drive mechanism including an eccentric spindle, a synchronous rotary drive disc, flexible eccentric rotating shafts, eccentric sleeves, magnetic poles, the eccentric shaft fixing disc, and a spindle motor, etc. The device does not need a circulating device to renew magnetorheological fluid and does not need to renew the magnetorheological fluid during the finishing process; in fact the entire process from rough polishing to precise polishing can be done at one time. The device maintains a consistent workpiece surface and delivers a low cost and very efficient polishing process that is eminently suitable for the planes of optical elements with large diameter; it is also suitable for studying the material removal mechanism of planar optical materials and detecting sub-surface damage, as well as other experimental studies.
A self-sharpening polishing device with magnetorheological flexible polishing pad formed by dynamic magnetic field, wherein the self-polishing device comprises a polishing disc revolution mechanism and a multi-magnetic-pole synchronous rotary drive mechanism, the polishing disc revolution mechanism comprising a base, a transmission shaft motor, a transmission shaft, a transfer disc, an eccentric shaft fixing disc, a cup-shaped polishing disc and a transmission shaft transmission mechanism, the multi-magnetic-pole synchronous rotary drive mechanism comprising an eccentric spindle, a synchronous rotary drive disc, flexible eccentric rotating shafts, eccentric sleeves, magnetic poles, the eccentric shaft fixing disc, a spindle motor, and a spindle transmission mechanism, wherein the transmission shaft motor is fitted onto the base, a driving transmission member of the transmission shaft transmission mechanism is fitted onto an output shaft of the transmission shaft motor, a driven transmission member of the transmission shaft transmission mechanism is connected to the transmission shaft, the transfer disc is fitted coaxially onto an upper end face of the transmission shaft, the eccentric shaft fixing disc is fitted coaxially onto an upper end face of the transfer disc, the cup-shaped polishing disc is fitted coaxially onto an upper end face of the eccentric shaft fixing disc, the spindle motor of the multi-magnetic-pole synchronous rotary drive mechanism is fitted onto the base, a driving transmission member of the spindle transmission mechanism is fitted onto an output shaft of the spindle motor, a driven transmission member of the spindle transmission mechanism is connected to the eccentric spindle, the eccentric spindle is mounted in a hollow cavity inside the transmission shaft, the synchronous rotary drive disc is fitted onto an upper end of the transmission shaft, the flexible eccentric rotating shaft is installed onto an upper end of the synchronous rotary drive disc, the eccentric sleeve is fitted onto the flexible eccentric rotating shaft, the magnetic pole is fitted inside the eccentric sleeve, and the flexible eccentric rotating shaft is mounted in a shaft hole inside the cup-shaped polishing disc.
Dependencies are inferred from the claim text.