Electrochemical discharge mechanical milling composite machining tool cathode and using method

Abstract

The invention relates to electrochemical discharge mechanical milling composite machining tool cathode and a using method, and belongs to the field of electrolytic electric spark mechanical compositemachining. A tool cathode material is a copper-tungsten alloy, a workpiece is a conductive material, an electrolyte is a salt solution with relatively high conductivity, a common direct-current powersupply is adopted for power supply, and insulating blades are welded at the bottom of the tool. During machining, the electrolyte enters a machining area from the side wall of the tool cathode, an electrochemical anode of the workpiece material is dissolved, and a discharge channel is formed between the tool cathode and the workpiece through a small machining gap; the rotation of the tool cathoderealizes the transfer of discharge points, so that the electrolysis effect and the electric spark effect are combined to remove the material, the material removal rate is remarkably improved, due to the milling effect of the blades at the bottom of the tool, a machined bottom surface can be leveled, and the flatness of the machined bottom surface is improved. The tool can realize high-efficiency and high-precision machining of metal materials which are difficult to machine.

Description

technical field [0001] The invention relates to a cathode of an electrochemical discharge mechanical milling compound processing tool and a use method thereof, belonging to the field of electrolysis electric discharge mechanical milling compound processing. Background technique [0002] With the development of science and technology, parts made of difficult-to-cut materials such as titanium alloys and high-temperature alloys have been used more and more in aerospace and other fields. For example, the wings, central wing, and fuselage skin of the C919 aircraft are all made of titanium alloy materials. The GH4169 material accounts for 34%, 56%, and 57% of the total weight of the CF6 engine, CY2000 engine, and PW4000 engine, respectively. However, when traditional machining methods are used to process these difficult-to-machine materials, there are problems such as large cutting force and serious tool wear, resulting in high processing costs and low efficiency, which limits the...

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Problems solved by technology

[0006] The object of the present invention is to propose a cathode of an electrochemical discharge mechanical composite milling tool and its use method. The cathode of the tool uses a copper-tungsten alloy with a high melting point as the cathode of the tool, and a salt solution with a higher conductivity as the electrolyte, and the bottom surface of the tool is inlaid There are insulating blades of different heights, combining electrolysis, arc discharge and mechanical milling, which can not only realize efficient processing of difficult-to-machine metal materials, but also improve the problem of poor flatness and surface quality of the bottom surface after processing, and also reduce tool wear

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