Magnetorheological elastomer variable-rigidity air bag polishing device and method

Abstract

The invention discloses a magnetorheological elastomer variable-rigidity air bag polishing device and method. A polishing air bag is fixed to one end of a polishing air bag base, an air pressure cavity is formed between the end of the polishing air bag base and the polishing air bag, and the polishing air bag has certain flexibility through air pressure adjustment and magnetic field adjustment inthe cavity wall of the polishing air bag. It is guaranteed that the polishing air bag deforms when making contact with the surface of a to-be-polished workpiece, so that the polishing air bag is matched with the workpiece in surface shape, and surface shape errors of the polishing air bag are prevented from being copied to the surface of the to-be-polished workpiece. Meanwhile, through air pressure and magnetic field regulation and control, the polishing air bag has enough rigidity and hardness to guarantee the material removal rate of the workpiece, and through the magnetic field regulation and control, pose distribution of non-magnetic abrasive particles in the polishing air bag, internal stress distribution of the contact area of a grinding tool and the workpiece and a free abrasive particle motion state are regulated and controlled. Semi-consolidated abrasive polishing integrating consolidated abrasive particles and free abrasive particles is achieved, and the problems that in theconsolidated abrasive polishing process, the subsurface of the workpiece is seriously damaged, and in the free abrasive polishing process, the polishing efficiency is low are solved.

Description

technical field [0001] The invention belongs to the technical field of workpiece polishing, and in particular relates to a magnetorheological elastomer variable stiffness airbag polishing device and a polishing method. Background technique [0002] Ultra-precision and complex curved surface parts are indispensable in high-end engineering fields such as optics, electronics, energy, and biology. Most of their manufacturing materials are difficult-to-machine materials, and the processing efficiency is relatively low, and surface and sub-surface damage is difficult during the ultra-precision polishing process. The contradiction that control, "high efficiency" and "low loss" cannot be satisfied at the same time is also a bottleneck problem in the field of ultra-precision machining. Conventional methods are difficult to meet the composite requirements of machining efficiency and machining quality in the ultra-precision manufacturing process of complex curved parts. Since the 1990s...

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Problems solved by technology

[0002] Ultra-precision and complex curved surface parts are indispensable in high-end engineering fields such as optics, electronics, energy, and biology. The contradiction between control, "high efficiency" and "low loss" has always been the bottleneck problem in the field of ultra-precision machining. It is difficult for conventional methods to meet the combined requirements of machining efficiency and machining quality in the ultra-precision manufacturing process of complex curved surface parts.

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