Straight-line curved surface multi-wire electric discharge machining method

Abstract

The invention discloses a straight-line curved surface multi-wire electric discharge machining method. The machining method comprises the following steps that a plurality of multi-grooved wire rollersare manufactured, grooves are required to just wrap electrode wires to be wound, so that radial run-out of the electrode wires during the wire conveying process is limited, and the distance between every two adjacent grooves is smaller than the sum of the diameter of each electrode wire and a discharging gap during machining; the multi-grooved wire rollers are mounted on a wire electric dischargemachining machine tool, the electrode wires are coiled one by one to form an electrode wire parallel wire mesh, and the two ends of the electrode wires are connected to a wire storage barrel; at theupper end and the lower end of the electrode wire parallel wire mesh surface, contact jacking is carried out on the electrode wire parallel wire mesh, a curved surface sample strip plate is composed of a wear-resistant material, and the electrode wire parallel wire mesh surface is changed into a straight-line curved surface from the plane according to the edge fluctuation of the curved surface sample strip plate or the fact that the edge included angles among the curved surface sample strip plates are different; a wire electric discharge machining auxiliary condition is started; and one-way feeding is carried out on a metal plate workpiece which is installed on a machining platform to be machined so as to obtain a straight-line curved surface conforming to the electrode wire mesh on the metal plate workpiece after machining is completed.

Description

technical field [0001] The invention relates to the processing of ruled curved surfaces, in particular to a multi-line electric spark cutting processing method for ruled curved surfaces. Background technique [0002] Ruled surfaces are widely used in engineering, such as building domes, aero-engine blade surfaces, various injector nozzles, etc. However, like all curved surfaces, the processing of ruled surfaces also faces processing difficulties and processing techniques. Therefore, the pursuit of simple and efficient processing methods for ruled surfaces has always been an important demand in the industry. [0003] The current machining methods for ruled surfaces are mainly multi-axis milling and EDM. Since the mathematical model of the ruled surface is simpler than other surfaces, there are traces to be built around the ruled surface from point to surface. Therefore, the traditional milling process is first applied to the ruled surface. However, due to the complex space ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-wire EDM processing method for ruled curved surfaces formed by repeated winding of electrode wires to solve the problems of complex feed, low efficiency, and large electrode loss in traditional ruled curved surface wire cutting processing.

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