Method for machining multi-surface cone prism of concentrated photovoltaic solar system

Abstract

The invention relates to a method for machining a multi-surface cone prism of a concentrated photovoltaic solar system. The multi-surface cone prism is a continuous three-order taper prism. The method is characterized by comprising the following steps of: a, performing hot-press initial machining on a K9 glass material to form a blank in the multi-surface cone shape, and reserving machining allowance of 0.5 to 0.8 mm in the thickness direction of each surface; b, adhering the small end face of the blank onto an optical flat plate, and milling and polishing a large end face through cold machining; and c, adhering the large end face of the blank onto a positioning mold, performing linkage control on the movement and the rotation of the blank on a grinding disk and a polishing disk through five spatial parameters, and performing coarse grinding, accurate grinding and polishing on twelve isosceles trapezoid side faces and the small end face respectively to obtain a finished product. By the method, machining time is short, a machining process is easy to control, and machining quality is high.

Description

technical field [0001] The invention relates to a processing method for a polyhedral pyramidal prism used in a concentrated photovoltaic solar energy system, wherein the polyhedral pyramidal prism is a continuous third-order taper prism. Background technique [0002] Polygonal pyramidal prisms are used for solar energy reception and conversion in concentrated photovoltaic (CPV) systems. Through the total reflection principle of the prism itself, the sunlight is gathered, and then through the solar energy auxiliary material, the light energy is converted into electrical energy, heat energy, etc., which can be used by people. [0003] Photovoltaic power generation has experienced the first generation of crystalline silicon cells and the second generation of thin film cells, and the current industrialization process is gradually turning to efficient CPV system power generation. Compared with the previous two generations of batteries, CPV uses multi-junction III-V compound batt...

AI Technical Summary

Problems solved by technology

[0004] Traditional optical cold processing adopts multi-piece processing of multi-faceted pyramid prisms, and pastes a single piece on the optical support body, and then pastes several or dozens of optical support bodies on an optical flat plate, so that one surface is processed. Rough grinding, fine grinding, polishing, cleaning, when one surface is finished, knock the lower plate, and then process the other surface in the same way. Since there are many surfaces to be processed for the multi-faceted cone, this method has more procedures and processing If the time is too long and the process is not easy to control, it is easy to cause cracks in the prism, defects, and size mismatch, etc.

and higher production costs

[0005] For example, the patent number is 200810140914.2, and the patent name is "a method for making a window prism for collecting palm (fingerprint) images", which discloses a method for making a prism, which includes upper plate, milling, grinding, secondary Loading, secondary milling, secondary grinding, polishing, cleaning, chamfering, inspection and wrapping, coating and other processes, the entire production method needs to move the prism plate to be processed, and then repeat multiple times of grinding, the process is complicated , long processing time and low efficiency

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