Working fluid circulation filter device of wire cut electrical discharge machine

Abstract

The invention discloses a working fluid circulation filter device of a wire cut electrical discharge machine, which comprises a fluid storage tank, a hydraulic pump, a feed pipe, nozzles, a filter and a return pipe, wherein one end of the feed pipe is connected with the hydraulic pump; the other end of the feed pipe is connected with nozzles; the return pipe is located in a coordinate table and connected with the filter; the hydraulic pump draws working fluid out of the fluid storage tank and transmits to the nozzles through the feed pipe; the nozzles spray the working fluid to a machining area; and then, the working fluid enters the filter through the return pipe in the coordinate table and flows back to the fluid storage tank after filtration. With the adoption of the mode, the device is simple in structure, and can recycle the working fluid after wire cutting, thereby lowering machining cost and reducing resource waste.

Description

technical field [0001] The invention relates to the field of wire electric discharge cutting equipment, in particular to a circulating filter device for working fluid of a wire electric discharge cutting machine. Background technique [0002] Wire cut Electrical Discharge Machining (WEDM for short) belongs to the category of electrical processing. It was discovered by the Lazarinko couple in the former Soviet Union when they studied the phenomenon and causes of switch contacts being damaged by spark discharge corrosion. The local metal can be melted, oxidized and corroded, thus creating and inventing the electric discharge machining method. The working principle is that free positive ions and electrons accumulate in the field and quickly form an ionized conductive channel. At this stage, a current is established between the two plates. As a result, countless collisions between particles form a plasma region, which quickly rises to a high temperature of 8,000 to 12,000 degr...

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Problems solved by technology

[0003] In the production process of wire cutting, in order to ensure that the cutting process can continuously and effectively generate spark discharge, and timely remove the galvanic corrosion products and heat from the processing area, it is necessary to continuously and fully supply clean working fluid to the wire cutting machine. However, wire cutting The working fluid will produce impurity particles after online cutting, which affects the conductivity of the working medium, the change of the discharge gap, and the stability of the discharge process, which in turn affects the cutting precision. Frequent replacement of the working fluid is costly and increases energy consumption. consume

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