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Gradient material electrode and manufacturing method thereof

A gradient material and electrode technology, applied in electrode manufacturing, electric machining equipment, manufacturing tools, etc., can solve the problems of reducing the shape and size accuracy of the workpiece, the loss of sharp corner areas, etc., to suppress the generation or expansion of rounded corners, and improve the shape Dimensional accuracy, strong bonding effect

Active Publication Date: 2020-02-21
SHENZHEN UNIV
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Problems solved by technology

[0002] During the EDM process, due to the skin effect, the current density in the sharp corner area of ​​the electrode working surface is significantly higher than other areas, resulting in rapid loss of the sharp corner area, which gradually becomes an arc shape, and is also copied to the surface of the processed workpiece, seriously reducing The shape and dimension accuracy of the processed workpiece

Method used

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  • Gradient material electrode and manufacturing method thereof
  • Gradient material electrode and manufacturing method thereof
  • Gradient material electrode and manufacturing method thereof

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preparation example Construction

[0034] refer to Figure 4 , the embodiment of the present invention also discloses a preparation method of a gradient material electrode, comprising the steps of:

[0035] S110, using an insulating film to seal the non-predetermined surface of the electrode 1 of the EDM tool;

[0036] S120, covering the predetermined surface of the electric discharge machining tool electrode 1 with a low loss rate conductive material with a predetermined thickness;

[0037] S130, removing the insulating film, and performing a vacuum heating treatment at a preset temperature on the electric discharge machining tool electrode 1 covered with the low loss rate conductive material, to obtain a gradient material electrode.

[0038] In the embodiment of the present invention, the non-predetermined surface of the EDM tool electrode 1 is sealed by using an insulating film; the preset surface of the EDM tool electrode 1 is covered with a low loss rate conductive material of a preset thickness; For the...

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Abstract

The invention discloses a gradient material electrode and a manufacturing method thereof. At least one layer of low-loss-rate conductive materials, which are in gradient diffusion from outside to inside, is arranged on a preset surface of an electrosparking processing tool electrode. A layer of materials with a processing loss rate lower than that of an electrode base body is prepared on the preset surface (all surface or side wall area surface) of the electrode, material component change gradient is formed from outside to inside, and matrix material components are finally equivalent, so thatthe loss rate is gradually transited to be the same with the loss rate of the matrix material from low to high, and therefore, generation or expansion of a fillet on the sharp corner position of the electrode is restrained, and shape dimension precision of the processed workpiece is improved; material components of the gradient material of the electrode matrix surface are gradually transited and are firmly combined with the matrix material, so that the defect that a purely prepared layer of low-loss-rate materials is liable to collapse in an electro-spark processing process is avoided.

Description

technical field [0001] The invention relates to the field of electric discharge machining electrodes, in particular to a gradient material electrode and a preparation method thereof. Background technique [0002] In the process of EDM, due to the skin effect, the current density in the sharp corner area of ​​the electrode working surface is significantly higher than that in other areas, resulting in rapid loss of the sharp corner area, which gradually becomes an arc shape, and is also copied to the surface of the processed workpiece, seriously reducing The shape and size accuracy of the processed workpiece. Contents of the invention [0003] In view of the above problems, embodiments of the present invention are proposed to provide a gradient material electrode and a preparation method thereof that overcome the above problems or at least partially solve the above problems. [0004] The embodiment of the present invention discloses a gradient material electrode. At least o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H1/04B23H1/06
CPCB23H1/04B23H1/06
Inventor 伍晓宇雷建国徐斌汤勇唐恒周超兰
Owner SHENZHEN UNIV
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