A magnetorheological elastomer variable stiffness airbag polishing device and polishing method

A magnetorheological elastomer, airbag polishing technology, applied in surface polishing machine tools, grinding/polishing equipment, metal processing equipment, etc., can solve low processing efficiency, difficult to control surface and subsurface damage, difficult to process materials, etc. problems, to achieve the effect of improving production efficiency, optimizing polishing efficiency, and simple structure

CN112497023BActive Publication Date: 2022-03-04CHANGAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-03-04

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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.
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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 ...

Examples

Embodiment Construction

[0031] The present invention is described in further detail below in conjunction with accompanying drawing:

[0032] Such as figure 1 As shown, a magnetorheological elastomer variable stiffness airbag polishing device includes a handle shaft 1, a magnetic control device and a polishing airbag base 5 fixed at the end of the handle shaft 1, and one end of the polishing airbag base 5 is fixed with Polishing airbag 7, an air pressure chamber is formed between the end of the polishing airbag base 5 and the polishing airbag 7, the polishing airbag 7 is made of abrasive grain composite magnetorheological elastomer material, and the polishing airbag base 5 is provided with a connected air pressure chamber The air flow channel of the chamber and the air source; the magnetic control device includes a first electromagnet 12 and a second electromagnet 10, the first electromagnet 12 is arranged in the air pressure chamber, the second electromagnet 10 is arranged on the workbench 9, and the...