A Nanofluid Oil Film Water Droplet Electrostatic Controllable Jet Cutting Method and Device

Abstract

The invention discloses an electrostatic and controllable jet cutting method and device adopting nanofluid OoW (oils on water) in the field of cutting processing. A coaxial nozzle is connected with a first micro-injection pump through a first silicone rubber tube and connected with a second micro-injection pump through a second silicone rubber tube, the first micro-injection pump pumps out a water-based nanofluid, the second micro-injection pump pumps out an oil-based nanofluid, an adjustable high-voltage electrostatic generator outputs direct-current negative high voltage to the coaxial nozzle, a high-voltage electrostatic field is established among the coaxial nozzle, a cutter and a workpiece, and the water-based nanofluid and the oil-based nanofluid directly make contact with the coaxial nozzle with the direct-current negative high voltage, are charged with negative charge with the same polarity as the coaxial nozzle and are converged at an outlet of the nozzle discharge port to form the nanofluid OoW. High cooling performance of the water-based nanofluid and excellent lubrication performance of the oil-based nanofluid are effectively combined, efficient cooling and lubrication can be implemented to a cutting area, and directional and controllable transportation of the nanofluid OoW to the cutting area is realized.

Description

technical field [0001] The invention belongs to the field of cutting processing, in particular to a device and method for cooling and lubricating a cutting area of ​​cutting processing. Background technique [0002] Cutting processing is the main method of obtaining parts. In cutting processing, most of the energy consumed for removing materials is converted into cutting heat and concentrated in the cutting area, causing high temperature of the tool and causing rapid wear of the tool. The performance is more prominent. The usual cooling measure is to pour a large amount of cutting fluid into the cutting area to reduce the cutting temperature, prolong the tool life and improve the processing efficiency. However, due to the high pressure at the contact interface between the tool and the chip, and the tool and the workpiece, when a large amount of cutting fluid is poured into the cutting area, the cutting fluid that can enter the cutting area and actually play a cooling and lu...

AI Technical Summary

Problems solved by technology

Although this method improves the cooling and lubrication effect of MQL, it has the following defects: (1) The water flow required for the formation of oil film droplets is large, which cannot meet the requirements of high efficiency and low energy consumption; (2) High-pressure air As the driving force for the formation and transportation of oil film water droplets, it will also cause oil film water droplets to drift into the air, which will have an adverse impact on the working environment and human health.

The Chinese patent number is ZL201410229717.3, and the name is the device disclosed in the document "A Controllable Nano Fluid Droplet Spray Cutting Method and Device". It establishes a high-voltage electrostatic field between the nozzle and the tool, and a small amount of nano fluid is charged and atomized. It becomes charged droplets, and the droplets are transported to the cutting area under the action of the electric field force, and the cutting area is cooled and lubricated; by changing the electrostatic field between the nozzle and the tool, the size, distribution and trajectory of the nanofluid droplets can be adjusted to achieve The directional and controllable transport of the mist to the cutting area reduces the drift of the mist during the transmission process. Although the cooling and lubrication performance of the minimum quantity lubrication is improved, and its environmental performance is also improved, but because only one kind of mist is used in the implementation process Nanofluid (water-based or oil-based) is a cooling and lubricating medium, which fails to combine the high cooling performance of water-based nanofluid and the excellent lubricating performance of oil-based nanofluid, so its cooling and lubricating performance still needs to be further improved to meet difficult High-efficiency cutting of processed materials has high requirements for cooling and lubrication

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