Method for flanging slant notch of cylindrical shell

Abstract

The invention relates to a method for flanging a slant notch of a cylindrical shell, comprising the following steps: moulding and punching are carried out on 8 parts along the periphery of the cylindrical shell parts, 8 slant flanging notches are correspondingly arranged along the periphery of the cylindrical shell; first, sheet metal is produced into a sector and then rolled into a cone and then welded and corrected; afterwards, laser is adopted to cut the cone into kerves of the notches, the method of mould stamping is adopted to stamp all 8 notches in a stroke; a wedge block is adopted to transform vertical ram pressure of a punching machine into horizontal ram pressure which is exerted on 8 slotting parts, so that both internal mould and external mould can move; an active structure can be adopted to a female groove, when stamping is carried out, the outside female groove is first put in place, and then the inside male groove moves and is flanged.The invention has the advantages that high-accuracy part stamping is realized by using an ordinary pressure machine.The mechanism features good implementation effect, satisfies high-accuracy engine part processing requirements and enjoys good TOP.In addition, the processing efficiency is high; when specialized equipment is not used, the method of the invention is a reliable and economical method for processing similar parts.

Description

technical field [0001] The invention relates to the field of mechanical forming and processing, and particularly provides a method for flanging a cylindrical oblique notch. Background technique [0002] There are 8 oblique flanging notches along the circumference of a certain engine runner barrel, and the positional requirements are relatively high. Usually, when machining notches on the barrel, the positioning holes are first machined, and then the holes are used to locate the notches. This method has low machining accuracy, and the groove of the punching center is OK. The sliding of the punching oblique to the groove parts cannot guarantee the machining accuracy. How to ensure the positional requirements of the 8 oblique flanging notches on the cylinder body becomes a problem. a key question. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a method for flanging a cylindrical oblique notch in order to ensure the positional requirement...

AI Technical Summary

Problems solved by technology

[0002] There are 8 oblique flanging notches on the upper edge of the cylinder body of the flow channel of an engine, and the position requirements are relatively high. Usually, the notches are processed on the cylinder body, and the positioning holes are processed first, and then the holes are used to position the notches. The processing accuracy of this method is low, and the groove of the center can be punched, but the parts of the oblique groove can slip, and the processing accuracy cannot be guaranteed. How to ensure the positional requirements of the 8 oblique flange notches on the cylinder body has become a problem. a key question

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