A self-adaptive flexible low-stress clamping device and clamping method for deep-sag aspheric elements

Abstract

The invention discloses an adaptive flexible low-stress clamping device and a clamping method for deep sagittal high aspheric elements. The clamping device includes a vacuum adsorption base, several flexible support units, a double-channel rotary joint, a trachea, a top ring, Sealing ring, self-centering chuck and high-precision CNC rotary table; the vacuum adsorption substrate is fixed on the high-precision CNC rotary table through the self-centering chuck, and several flexible support units are evenly distributed on the outer wall; the vacuum adsorption substrate is along the axial direction There is a through hole, and the gap between the through hole and the flexible support unit forms a vacuum adsorption channel; one end of the through hole is connected to the channel I of the dual-channel rotary joint through threads; Radial through-hole for channel II connection of the swivel joint. The invention realizes the clamping by means of "suction + support", so as to solve the problems that the existing deep sagittal aspherical element and the clamping device cannot be completely fitted, the clamping precision is low, and the clamping stress exists.

Description

technical field [0001] The invention belongs to the technical field of optical ultra-precision processing, and in particular relates to an adaptive flexible low-stress clamping device and a clamping method for deep sagittal high aspheric elements. Background technique [0002] In order to improve the aerodynamic performance of the system and adapt the surface of the optical element to the external shape of the system platform, Fukayako Aspheric Elements came into being. The aspheric element of Fukiyako is installed on the head of the system, which can greatly reduce the air resistance of the system during flight, and make the system have better maneuverability. [0003] Due to its large aspect ratio, thin wall, unconventional shape, and hard and brittle materials, Fukayako aspheric elements have brought great difficulties and challenges to ultra-precision machining and testing. In ultra-precision machining, there are deep and high , large steepness, and easy deformation of ...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to address the problems existing in the prior art, and provide an adaptive flexible low-stress clamping device and clamping method for deep sagittal aspheric elements, so as to solve the problem of existing deep sagittal aspheric elements and The clamping device cannot be fully fitted, the clamping accuracy is low, and there are problems of clamping stress

[0006] It should be noted that the technology disclosed by the present invention is to solve the problem that the existing clamping device for processing Fuyako aspheric components completely fits the inner surface of the component with the clamping device, and fixes it with adhesive glue and has low utilization rate. Problems with melting point wax and gypsum filling slots and gaps between fixtures and components

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