A magnetorheological elastomer variable stiffness airbag polishing device and polishing method

Abstract

The invention discloses a magneto-rheological elastomer variable stiffness airbag polishing device and a polishing method. A polishing airbag is fixed at one end of a polishing airbag base, and an air pressure chamber is formed between the end of the polishing airbag base and the polishing airbag. The air pressure adjustment and magnetic field adjustment in the wall of the air bag make the polishing air bag have a certain flexibility, so as to ensure that the polishing air bag is deformed when it contacts the surface of the workpiece to be polished, so as to achieve the matching of the polishing air bag and the surface shape of the workpiece, and avoid copying the surface shape error of the polishing air bag to the The surface of the workpiece to be polished; at the same time, the air pressure and magnetic field are regulated to make the polishing air bag have a high enough rigidity and hardness to ensure the material removal rate of the workpiece, and the magnetic field is used to control the distribution of non-magnetic abrasive grains inside the polishing air bag and the contact area between the abrasive tool and the workpiece The stress distribution and the movement state of free abrasive grains realize the semi-consolidated abrasive polishing integrating fixed abrasive grains and free abrasive grains, and optimize the problem of serious subsurface damage of the workpiece in the process of fixed abrasive polishing and low polishing efficiency in the process of free abrasive polishing. question.

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. Control, the contradiction between "high efficiency" and "low loss" that cannot be satisfied at the same time has always been a bottleneck problem in the field of ultra-precision machining. Conventional methods are difficult to meet the combined requirements of machining efficiency and machining quality in the ultra-precision manufacturing process of complex curved surface parts. Since the 1990s, there have been a series of ultra-precision machining processes for complex curved surface parts, including small grinding head CNC polishing, airbag polishing, stress disk polishing, and ion ...

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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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