A four-axis linkage airbag polishing motion control method

Abstract

The invention provides a four-shaft linkage ballonet-polishing motion-controlling method, and relates to bonnet polishing. The method comprises that continuous precession movement of a selective ballonet is regarded as a processing method and a space coordinated system is established with the ball center of the ballonet as an origin. The method comprises that the scope of the induded angle R o u between a self-rotation shaft of the ballonet and vertical direction is ensured according to an equation of a surface. The method comprises that the applicative procession angle is ensured according to the scope of the induded angle R o u between the rotation axis of the ballonet and the vertical direction. The method comprises that the control of the procession angle is ensured in the process that procession movement of the ballonet polishes a aspheric optics according to a control algorithm which can inhibit a working point shift, therefore, the procession polishing of the four-shaft linkage of the aspheric optics can be achieved. The ballonet polishing of the four-axis linkage of a optical element can be achieved by taking advantage that a single rotation axis matches with the control algorithm to realize the procession movement of ballonet tolls on the premise that a feed movement is achieved by a three straight shaft. The four-shaft linkage ballonet-polishing motion-controlling method has the advantages of overcoming the defect that the process of the interpolation of spatial motion is complicated, and improving the working accuracy and efficiency of the aspheric optics.

Description

technical field [0001] The invention relates to an airbag polishing, in particular to a four-axis linkage airbag polishing motion control method for various optical element airbag polishing. Background technique [0002] As a polishing method that has developed rapidly in recent years, airbag polishing technology has been widely used in the polishing of optical components. Balloon polishing uses an inflatable spherical flexible airbag as a polishing tool or a polishing pad attached to the outer surface of the airbag as a polishing tool to polish the curved surface, which can not only ensure good fit between the polishing head and the surface of the polished workpiece, but also control the polishing efficiency and the polished surface The surface quality of the workpiece. [0003] At present, the motion control of airbag polishing is mainly based on five-axis linkage, that is, the high-precision polishing of optical components is realized through the linkage of three feed ax...

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