A centering clamping device for crystal material processing

Abstract

The invention relates to a fixture for a crystal material, in particular to a centering and clamping device used for processing the crystal material. The fixture is characterized in that the opposite faces of the upper parts of a rocker arm (2) at one side and a rocker arm (4) at the other side are respectively fixedly connected with a big clamping piece (1) and a small clamping piece (5), the opposite faces of the big clamping piece and the small clamping piece are respectively provided with slots (16), the lower part at a hinge joint of rocker arm support plates (7) on the bases of the rocker arm at one side and the rocker arm at the other side is respectively connected with the two ends of an elastic body; a corresponding lower part between the rocker arm at one side and the rocker arm at the other side is provided with a wedge-shaped block (8) which is small at the top and big at the bottom, and the lower part of the wedge-shaped block (8) is provided with a power mechanism which moves up and down. In the invention, by virtue of the big clamping block on the rocker arm at one side and the small clamping block on the rocker arm at the other side, stable positioning on a silicon core is realized, and accurate drilling or grooving or grinding on the silicon core is realized; and the defect that a hole or grinding groove on a transverse or vertical silicon core is non-standard due to the traditional manual operation mode is overcome by using the fixture provided by the invention.

Description

【Technical field】 [0001] The invention relates to a clamp for crystal material, in particular to a centering clamping device for crystal material processing. 【Background technique】 [0002] Silicon core overlapping technology is a very important technology in the process of polysilicon production using the Siemens method. It is mainly used in a link of polysilicon production, that is, the reduction reaction process. The principle of the reduction reaction process is: the reduction reaction is carried out in a closed reduction furnace, and several closed loops are formed by lapping silicon cores in the reduction furnace before loading the furnace, which is the "bridge" in the jargon. "; each closed circuit is composed of two vertical silicon cores and one horizontal silicon core; the two vertical silicon cores of each closed circuit are respectively connected to two electrodes on the bottom of the furnace, and the electrodes are respectively connected to the positive pole of ...

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Problems solved by technology

[0003] When the above technology is realized, one horizontal silicon core and two vertical silicon cores are connected through bridging technology, and the two ends of the horizontal silicon core are drilled or cut or ground into a certain shape, and then ground into a certain shape The grinding surface of the silicon core is lapped corresponding to the groove, or a plug with a certain taper is set at the end of the silicon core to insert the drilled hole of the silicon core to form the final lap joint; however, the aforementioned lap joint technology must be The horizontal silicon core or vertical silicon core is processed in advance. The silicon core has high hardness on the one hand and is easy to break on the other hand. Therefore, the silicon core must be fixed when processing the horizontal silicon core or vertical silicon core. The current processing The

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