Complex casing deep ascopore ultrasound wave deburring tool and method

Abstract

The invention pertains to a mechanically processing tool, relating to an ultrasonic burr removal tool and method for complex casing deep small holes. The invented device and method transform alternating current of 50Hz to supersonic mechanical vibration, the vibration amplitude of mechanical vibration is enlarged by an amplitude transformer bar and is transmitted to a vibration transmission bar to drive the superhard abrasive material thereon to vibrate longitudinally, impact the machined surface with a big velocity and generate maximal compressive force on a unit area to make the material to deform, crack and be peeled off as uncountable microparticles, so that to achieve the burr removal objective. The burr removal ultrasonic can reach position where manual tools are difficult to reach; man-made and environmental affecting factors are small, burrs are removed evenly and thoroughly, the processing accuracy and processing quality are easy to be ensured and controlled, the burrs are removed with identical degrees, and positions where burrs are removed have a same shape; the invented tool and method are suitable for processing holes with middle and small diameters and large length-diameter ratio in complex casing parts, especially holes smaller that phi 3; the processing time is short, and the processing efficiency is enhanced by over 50%.

Description

technical field [0001] The invention belongs to mechanical processing tools, and relates to an ultrasonic deburring tool and method for deep and small holes in complex shells. Background technique; [0002] Compared with other parts, shell parts have complex structures and require high geometric tolerances and machining accuracy. A shell part often has hundreds or even thousands of holes with different size requirements and a large number of diameters, depths and precision requirements. Small holes with a depth-to-diameter ratio greater than 10 account for more than 30% of the total. From the perspective of processing technology, the processing procedures are numerous and the cycle is long. The position of the burr after processing is special, especially the burr at each cross hole. It is invisible and intangible. It is difficult to remove. If it is not removed cleanly, it will become a dangerous process. Pollution sources that affect the reliability and life of parts. [...

AI Technical Summary

Problems solved by technology

However, both methods have limitations. The abrasive flow method is suitable for removing burrs of simple shells and single inner hole parts. For complex shell parts, the flow guide problem of abrasive flow in the criss-cross hole system is not easy to solve. , it is impossible to deal with the removal of burrs in various holes of such parts

The electrochemical deburring method is limited by the size of the electrode. It is only suitable for processing inner holes with a diameter greater than Φ3. After processing, the surface of the parts will be corroded. It is not suitable for high-precision inner holes and parts of some special materials (such as titanium alloys). The removal of burrs in the inner hole also produces certain pollution to the environment

There are very few studies on the deburring of the intersection of deep and small holes below Φ3. At present, it is basically still in the stage of manual deburring, that is: with the help of cold light source and endoscope observation, using autonomous hand tools (special-shaped scraper, file, etc.) Special grinding tools, etc.) deburring, labor-intensive, long cycle, high cost, low efficiency, it is difficult to ensure consistent product quality, not conducive to the assembly line operation in batch production and the realization of the flexibility of product manufacturing, easy to deburring process Generate undue scratches, lead to rework or even scrap, which can increase the manufacturing cost of parts by more than 10%

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