Novel grillwork welding clamp

Abstract

The invention discloses a novel grillwork welding clamp which can meet the welding requirement of a novel grillwork. The novel grillwork welding clamp comprises connecting screws, guide pipe positioning columns, a cover plate, side top plates, puller screws, a positioning plate, a bottom plate, first cylindrical head socket head cap screws and second cylindrical head socket head cap screws. The connecting screws penetrate through the cover plate and the side top plates to be connected with the bottom plate, so that the clamp keeps an integral structure, and the grillwork is fixed between the cover plate and the positioning plate. Inner strips of the grillwork are embedded into thin groove structures of the cover plate and the positioning plate, so that the sizes of lattice cells of the grillwork are ensured. The guide pipe positioning columns are fixed on the bottom plate through the first cylindrical head socket head cap screws and penetrate through the positioning plate. The novel grillwork welding clamp has the beneficial effects that the use effect of the clamp is good, the receding requirement of inclined incidence of lasers is met, and the strips are accurately positioned.

Description

technical field [0001] The invention belongs to the technical field of nuclear fuel assembly positioning grid manufacturing technology, and in particular relates to a novel grid welding fixture. Background technique [0002] The spacer grid is a honeycomb structure formed by inserting a variety of thin strips. The laser welding of the 17X17 grid is the key process for the manufacture of the spacer grid. After the grid is welded, the dimensional accuracy of the cells is required to be high. Therefore, when the grid is welded, the grid (strip) must first be embedded in the welding jig of the fine groove structure, and all the strips of the grid must be precisely positioned. The grid is to be welded on the six sides of the cuboid, so the welding fixture must be designed to give way at the necessary position to allow the laser to pass through to achieve the purpose of welding. There are 256 welding points on the upper and lower sides of each grid, a total of 512 welding points,...

AI Technical Summary

Problems solved by technology

A new type of grid is now being developed, in which 256 welding spots on the upper part sink, requiring the laser to be incident obliquely relative to the welding joint, and the original welding fixture cannot meet the requirements of laser clearance

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