Pneumatic dual-station inner hole cavitation system and method

Abstract

The invention discloses a pneumatic dual-station inner hole cavitation system and method. A middle partition is arranged inside a drive cylinder for separating the inner part of the drive cylinder into a left chamber and a right chamber, which are the same, and do not communicate with each other; a horizontal piston rod is fixedly arranged on centers of the two pistons; through holes are formed inthe middle positions of left and right end surfaces of the drive cylinder; the left side of the drive cylinder is sequentially equipped with a workpiece I with a horizontally arranged center axis anda left clamping chuck, and the right side of the drive cylinder is sequentially equipped with a workpiece II with a horizontally arranged center axis and a right clamping chuck; the leftmost end of the piston rod is fixedly connected with a left film, and the rightmost end of the piston rod is fixedly connected with a right film; a left clamping gas cylinder which is horizontally arranged is fixedly connected on the left side wall of a box body, and a right clamping gas cylinder which is horizontally arranged is fixedly connected on the right side wall of the box body; two stations are symmetrically arranged, and drive working cavities are symmetrically arranged; and while one drive working cavity intakes gas, another drive working cavity exhausts gas along with motion of a piston, so that a return spring does not need to arrange, and the structure is simple and compact, and therefore, strengthening work is more efficient by combining double stations.

Description

technical field [0001] The invention relates to the field of component surface strengthening, in particular to a system and method for cavitation strengthening on the inner surface of micropores. Background technique [0002] The processing of parts is tending towards miniaturization and precision, which not only reduces the size of the machine but also improves the running accuracy of the machine. At the same time, the surface strengthening treatment of micro-miniature parts has also become a new research direction. The traditional method of mechanical shot peening to strengthen the surface of the workpiece needs to provide a large amount of shot peening and enough space, which is difficult to apply to the micro-sized parts of the current precision machinery; the method of cold extrusion inner hole surface can process larger inner hole diameter, and The corresponding mold needs to be designed according to the size of the inner hole, and the process is relatively cumbersome...

AI Technical Summary

Problems solved by technology

The traditional method of mechanical shot peening to strengthen the surface of the workpiece needs to provide a large amount of shot peening and enough space, which is difficult to apply to the micro-sized parts of the current precision machinery; the method of cold extrusion inner hole surface can process larger inner hole diameter, and The corresponding mold needs to be designed according to the size of the inner hole, and the process is relatively cumbersome; the new method of laser peening to strengthen the surface of the workpiece can be applied to the outer surface of micro parts, but for the strengthening of the inner surface of complex micropores, the laser peening method is limited. There are more constraints

[0003] Chinese Patent Publication No. CN101126117A provides a laser strengthening treatment method for the hole structure. Before the laser shock strengthening, the mandrel or the bushing is placed in the hole and kept flush with the end face of the treatment hole. Remove the mandrel or bushing after strengthening; the feature of this method is to open the hole first and then strengthen it. The mandrel or bushing is added to ensure that the hole position will not be deformed after laser shock strengthening and ensure the quality of the strengthened hole. The disadvantage of the method is that the mandrel or the bushing may be difficult or impossible to remove from the small hole after laser shock strengthening, and it is also easy to damage the processed hole

The Chinese Patent Publication No. CN102205488A provides a method for cold extrusion processing holes of slotted bushings. The mandrel makes it completely pass through the inner hole of the part. The force of the extruded rod in this process will be evenly transmitted to the inner hole wall of the part through the slotted bushing, so that residual compressive stress will be generated around the inner hole, but during the processing Medium extrusion rod is easy to break

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