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Tube electrode for electrolytic and electric spark composite cutting and machining method

A technology of cutting processing and electric spark, which is applied in the direction of electric processing equipment, electrode manufacturing, metal processing equipment, etc., can solve the problems of poor surface quality and low efficiency of electrolytic wire cutting, achieve good strength and rigidity, and improve processing efficiency and processing quality, and the effect of improving processing efficiency

Active Publication Date: 2020-12-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0007] Aiming at the problems of poor surface quality and low efficiency of electrolytic wire cutting when high-efficiency and precise wire cutting is used to cut large-thickness and difficult-to-machine materials, the invention proposes a tube electrode and processing method for electrolytic electric spark composite cutting

Method used

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  • Tube electrode for electrolytic and electric spark composite cutting and machining method
  • Tube electrode for electrolytic and electric spark composite cutting and machining method
  • Tube electrode for electrolytic and electric spark composite cutting and machining method

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Embodiment Construction

[0022] according to figure 1 As shown, the tube electrode 1 for electrolytic EDM composite cutting is a hollow copper-tungsten alloy tube, and its inner cavity is divided into two parts: the liquid flow channel 2 and the ventilation flow channel 3 by a longitudinal partition, and the partition is located in the tube electrode 1 In the middle of the cavity, the upper end of the liquid flow channel 2 is opened and the lower end is sealed, and the upper end of the flow channel 3 is sealed and the lower end is opened. The sides of the two flow channels are symmetrically provided with the same array of liquid injection holes 4 and array of air injection holes 10 . Electrolyte 8 is ejected from the array of spray holes 4 through the liquid flow channel 2 ; air is ejected from the array of air spray holes 10 through the flow channel 3 .

[0023] according to figure 2 As shown, during the cutting process, the tube electrode 1 rotates, so that the array liquid injection holes 4 and t...

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Abstract

The invention relates to a tube electrode for electrolytic and electric spark composite cutting and a machining method, and belongs to the technical field of electro-machining. The tube electrode is mainly characterized in that the tube electrode for electrolytic and electric spark composite cutting is a double-flow-channel copper-tungsten alloy tube with a liquid flow channel and an air flow channel, and the outer side faces of the two flow channels are symmetrically provided with same array small holes. When the liquid spraying holes of the liquid flow channel are rotated into an end face machining gap, an electrolytic reaction occurs between the tube electrode and a machined face. Air is jetted into a kerf from the air jet holes through the air flow channel, waste electrolyte in the kerf is blown away, and stray corrosion is reduced. When the air jet holes of the air flow channel rotate into the end face machining gap, spark discharge occurs between the tube electrode and the machined face. Electrolyte is sprayed into the kerf from the liquid spraying holes through the liquid flow channel, and electrolytic reaction occurs between the tube electrode and the side wall of the workpiece. In the cutting process, the tube electrode rotates, electrolyte and air are alternately sprayed into the end face machining gap, electrolytic machining and electric spark machining are alternately conducted between the tube electrode and the workpiece, and the machining efficiency and the machining quality are improved.

Description

technical field [0001] The invention relates to a tube electrode for electrolytic electric spark composite cutting and a processing method thereof, belonging to the technical field of electric processing. Background technique [0002] Difficult-to-machine materials such as superalloys and titanium alloys are widely used in fields such as aerospace and weapons due to their high strength and excellent heat resistance. However, conventional processes cannot meet the ever-increasing demands on machining accuracy and surface quality. At present, there is no relatively mature processing technology for high-quality and efficient cutting of these difficult-to-process materials. [0003] Wire EDM is widely recognized as a precision cutting process for metal-based materials. The whole processing process relies on the electric erosion during the pulsed spark discharge between the tool and the workpiece to remove the local material of the workpiece, so as to meet the predetermined cut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H7/22B23H7/36
CPCB23H7/22B23H7/36
Inventor 杨涛李延梁曾永彬徐正扬
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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