Position dimension control tool and method for outer hanging pieces of combustor shell

Abstract

The invention provides a position dimension control tool and method for outer hanging pieces of a combustor shell. A tailstock and a chuck are arranged on the upper surface of a working platform, andthe combustor shell is installed in a jacking and clamping manner; a guide block in an outer hanging piece welding and positioning fixture is vertically fixed to one end of a cantilever of a single-arm three-dimensional measuring ruling machine, and the axial position, the circumferential position and the space relative to the combustor shell are adjusted; the lower end of the guide block is provided with a positioning groove, and the bottom of the groove is provided with a positioning hole; an alignment rod is arranged in the positioning hole, and the lower end of the alignment rod penetratesa center through hole of a positioning base; the positioning base is arranged in the positioning groove, and a spring outside the alignment rod is compressed; the two ends, in the circumferential direction of the combustor shell, of the positioning base compress the combustor shell and provided with positioning grooves; and the outer hanging pieces are arranged in the positioning grooves in the two ends of the positioning base through compression screws. By means of position dimension control tool and method for the outer hanging pieces of the combustor shell, the circumferential and axial position dimensions of the outer hanging pieces can be precisely controlled.

Description

technical field [0001] The invention belongs to the technical category of ultra-high-strength steel pressure vessel manufacturing, and is mainly applied to the precise control of the welding position size of an ultra-high-strength steel (D406A) with a large length-to-diameter ratio and a thin-walled cylindrical combustion chamber casing. Background technique [0002] Most of the thin-walled combustion chamber shells with large aspect ratio and ultra-high-strength steel (D406A) have external parts (threaded supports or mounting seats) of different sizes and structures distributed on the outer surface of the shell, all of which are welded to the shell by argon arc welding. The outer surface of the body realizes the docking assembly of the product. Due to the small structural size of the external parts of the combustion chamber shell, the high positional (axial and circumferential) dimensional accuracy requirements are difficult to guarantee; the fillet weld formation is not ea...

AI Technical Summary

Problems solved by technology

Although a processing allowance is reserved for the external parts to ensure the structural size and position accuracy of the external parts, special equipment must be used for processing

Due to the thin wall thickness of the cylinder, the risk of damage to the surface of the shell during processing is high, and it is easy to cause the entire combustion chamber shell to be scrapped, resulting in huge economic losses

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