Inflatable pressurized electrochemical discharge machining device and method

A technology of electrical discharge machining and electrochemistry, which is applied to fine working devices, stone processing equipment, manufacturing tools, etc., can solve the problems of unstable gas film thickness, accelerated gas film layer, and large size of tubular electrodes, etc. Difficult machining problems, reducing electrode loss, and improving the effect of machined surface quality

Active Publication Date: 2017-10-20
JIANGSU UNIV
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Problems solved by technology

The experimental results show that physical gas filling can replace part of the gas that needs to be generated by electrochemical reactions, accelerate the formation of gas film layers, reduce electrochemical reactions during processing, and improve the spark discharge rate, but the size of the tubular electrode is relatively large, and the gas film Layer thickness is not stable due to gas flow

Method used

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  • Inflatable pressurized electrochemical discharge machining device and method

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Embodiment 1

[0026] Embodiment 1: Install the workpiece 8 on the workbench 10, add the solution 7 into the working chamber 6, and make the workpiece 8 immersed in the solution 7 for more than 2mm. The force sensor 5 is installed on the Z-axis of the X-Y-Z three-coordinate numerical control platform 4, the tool electrode 9 is installed on the chuck below the force sensor 5, and the contact force between the tool electrode 9 and the workpiece 8 is detected by the force sensor, and the data is output To the data acquisition card 16, the air pressure sensor 3 is installed in the working chamber 6, the air pressure in the working chamber 6 is detected by the air pressure sensor 3, and the data is output to the data acquisition card 16, and the data acquisition card 16 uploads the data to the computer; 1 Feed the Z axis of the X-Y-Z three-coordinate numerical control platform 4 downward until it contacts the workpiece 8 to generate a contact force; connect the positive pole of the adjustable puls...

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Abstract

The invention is suitable for fine precision machining of insulated hard and brittle materials, belongs to the non-traditional machining field in manufacturing technologies, and particularly provides a pneumatic compression electrochemical discharge machining device and method. An airtight working cavity is filled with helium through a gas supply system, and thus pressure inside the working cavity is increased and controlled. An air pressure feedback and gas supply system is established to regulate the pressure inside the working cavity. A force feedback and tool electrode movement system is established to control effective feeding of tool electrodes, and the machining clearance is guaranteed. Pressure increase can accelerate formation of a gas film layer and improve the stability of the gas film layer, and electro-discharge machining precision and surface machining quality are improved. Pressure increase can also make operating fluid permeate into the machining area more easily, so that the machining depth is increased. Pressure control can indirectly control thickness of the gas film layer, and therefore the electro-discharge machining radius and machining precision can be controlled.

Description

technical field [0001] The invention relates to the field of special processing in manufacturing technology, in particular to an air-inflated pressurized electrochemical discharge processing device and method, which can be used for processing insulating hard and brittle materials. Background technique [0002] Insulating hard and brittle materials represented by glass have excellent properties such as high hardness, chemical corrosion resistance, transparency and good biocompatibility. At present, the processing methods for these materials include laser processing, chemical etching, ultrasonic processing, electrochemical discharge processing, etc. Laser processing is difficult to process transparent materials such as glass. The chemical etching process is complicated and the corrosion rate is low. During the ultrasonic machining process, due to the action of mechanical force, it is easy to cause cracks in the processed material. The electrochemical discharge machining met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28D5/04C03C15/00
CPCB28D5/04C03C15/00
Inventor 张朝阳刘皋聂昕陆海强戴学仁徐金磊曹增辉
Owner JIANGSU UNIV
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