A dual-circular grinding system with ultrasonic assisted vaporization and cooling with fog cannon

Abstract

The ultrasonic-assisted vaporization cooling double-circle grinding system with a fog cannon of the present invention includes: a grinding wheel and a roller that is circumscribed with it. A grinding wheel frame is provided on one side of the chassis. A double-rod bracket is vertically provided on the top of the chassis. The double-rod bracket The top of the fog cannon barrel is installed through the rotating shaft. The front end of the fog cannon barrel is fixed with a jet annular pipe network and an atomization annular pipe network. The bottom end of the jet annular pipe network is connected to the dosing pump through a liquid supply pipe. The bottom end of the ring-mounted pipe network is connected to the chassis through the mist supply pipe, and an electric control box is provided on one side of the chassis; by adjusting the flow rates of the jet annular pipe network, the atomization annular pipe network, and the flow rates of the hub and fan blade assembly respectively Rotation speed, changing the ratio of jet droplets, atomized droplets, and air, while changing the overall cylindrical spray rate to the grinding area, adding axial and longitudinal ultrasonic vibrations to assist the grinding process, and reducing the Leidenfrost effect should, enhance the grinding cooling effect and improve the grinding surface quality.

Description

technical field [0001] The invention belongs to the technical field of precision grinding, and relates to an ultrasonic-assisted vaporization cooling double-circle grinding system with a fog cannon. Background technique [0002] The slow-feed grinding wheel has a long contact arc with the workpiece. At the same time, there are many abrasive particles, and each abrasive particle is a cutting edge. The grinding contact arc is long, and the grinding debris is filamentous. The surface after cutting is not easy to produce cracks, vibration marks and other defects, and the corresponding metal generates a lot of heat in the process of tearing and deformation, and can even melt the grinding debris to form welding beads and burn the surface of the part. Therefore, slow feed grinding should be equipped with strong cooling. [0003] Boiling heat transfer mechanism in slow-feed grinding arc area: boiling has four stages, natural convection area, nucleate boiling area, transitional boil...

AI Technical Summary

Problems solved by technology

However, in the prior art, it has been applied in the cutting process, but it has not been popularized in the grinding process. The MQL in the prior art has the characteristics of a positive correlation between the atomization particle size and the injection pressure, and it is impossible to separate the two for further processing. separate control

[0005] In the prior art, the grinding fluid is usually used to cool down by fluid infiltration. With the development of grinding technology, nano-fluid lubrication technology, jet liquid supply method, through-flow liquid supply method, spray cooling method, etc. have appeared. In advanced manufacturing technology, the research hotspot is the slow-feed grinding method. The disadvantage of this grinding method is that the heat dissipation is poor, and it is easy to cause burns in the grinding arc area. The difficulty of the grinding method is that the grinding arc area is long, not only the heat generated by grinding is high, but also at the entrance of the grinding arc area, due to the Leidenfrost effect, the vapor film blocks other grinding fluids from entering the grinding arc area At present, researchers generally use the method of increasing the injection force to forcibly break the steam film

Chinese patent CN201711278067.1 discloses a nanofluid micro-lubrication grinding device with ultrasonic vibration-assisted grinding fluid microchannel infiltration. Compared with similar ultrasonic-assisted grinding devices, the ultrasonic vibration mechanism that can adjust the spatial position of the ultrasonic vibrator is improved, but only from The form of ultrasonic has been modified, but in essence it still belongs to the category of ultrasonic vibration loaded into the grinding area, and there is still no improvement and research on the boiling and vaporization of grinding fluid.

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