CN217433301U - Novel electrode for short arc cutting - Google Patents
Novel electrode for short arc cutting Download PDFInfo
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- CN217433301U CN217433301U CN202221181640.3U CN202221181640U CN217433301U CN 217433301 U CN217433301 U CN 217433301U CN 202221181640 U CN202221181640 U CN 202221181640U CN 217433301 U CN217433301 U CN 217433301U
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Abstract
The utility model discloses a novel electrode for short electric arc cutting process relates to special type processing technology field. The utility model discloses a: the electrode and the circular truncated cone type center hole are arranged on the center line of the electrode, the upper end hole is larger, the lower end hole is smaller, and the circular truncated cone type center hole is used for conveying a mixture working medium with certain gas-liquid ratio and pressure into a discharge gap between the electrode and a workpiece; the circular table type ring holes are uniformly arranged along the central axis of the electrode, and the circular table type central hole is assisted to guide a working medium into the discharge gap; the corrosion particle collecting tank is arranged on the surface of the electrode and used for corrosion particle collection, arc breaking and heat dissipation. The utility model discloses showing and improving interelectrode processing environment, reducing the electrode loss, improving the machining precision.
Description
Technical Field
The utility model discloses a novel electrode for short electric arc cutting process relates to special type processing technology field.
Background
Short arc discharge machining is an electric discharge machining technique in which a pulse voltage is applied between an electrode and a workpiece to generate a high-density current that breaks down a medium, and a large amount of heat energy is instantaneously released to erode the material. Compared with the traditional electric spark machining technology, the electric spark machining technology has higher pulse energy, so that the machining efficiency is higher, and the used gas-liquid mixed medium has the advantages of environmental protection, no pollution and the like compared with a kerosene medium in electric sparks. At present, the short arc discharge processing technology is widely applied to the fields of production and manufacturing of large-scale machines such as aviation, mines, petroleum, chemical industry, metallurgy and the like.
The existing short arc processing technology has the problems of low surface quality of workpieces, poor shape precision and the like, and numerous scholars at home and abroad mainly attribute the problems in the processing process to that the erosion particles generated in the processing change the discharge environment between electrodes, reduce the processing stability, and carry out a great deal of research aiming at the distribution rule of the erosion particles in a gap flow field of the discharge processing.
The electrode used in the existing short arc cutting processing is mainly a hollow cylindrical electrode, and has the following problems;
(1) the hollow cylindrical electrode is only provided with a central hole, the effective working medium obtained in the front semi-arc area of the effective discharge area between the workpiece and the tool electrode is still limited, the machining efficiency is low, and ideal effects of scouring, cooling and eroding particles cannot be obtained;
(2) when the tool electrode starts to process from the side edge, the working medium flowing out of the hollow cylindrical electrode does not flow through the effective discharge area, and the erosion particles cannot be sufficiently cooled and washed, so that the stable processing is influenced, and the surface quality of the workpiece is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel electrode for short arc cutting process to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a novel electrode for short arc machining comprising an electrode and:
the circular truncated cone type center hole is formed in the center line of the electrode and is used for conveying a working medium into a discharge gap between the electrode and a workpiece;
the circular truncated cone type annular holes are uniformly arranged along the central shaft of the electrode, and assist the circular truncated cone type central hole to guide the working medium into the discharge gap;
and the etching particle collecting tank is arranged on the surface of the electrode and is used for etching particle collection, arc breaking and heat dissipation.
In a further scheme of the utility model, the circular truncated cone-shaped central hole and the circular truncated cone-shaped annular hole are both circular, and the liquid inlet end hole is larger than the liquid outlet end hole.
As a further proposal of the utility model, the number of the circular truncated cone type annular holes is 8, and the circular truncated cone type annular holes are evenly distributed along the central axis of the electrode.
As a further proposal of the utility model, the number of the etched particle collecting tanks is 8, and the etched particle collecting tanks are arranged on the surface of the electrode.
Compared with the prior art, the beneficial effects of the utility model are that: increased electrode and anchor clamps area of contact, kept electrode stability when being favorable to high-speed rotation: the circular truncated cone type central hole and the circular truncated cone type annular hole can effectively increase the flushing pressure, improve the motion characteristic of a gap flow field medium and the machining environment between electrodes, reduce the concentration of erosion particles between the electrodes, enable the discharge state to be more stable, and improve the machining precision; the erosion particle collecting tank is used for erosion particle collection, arc breaking and heat dissipation, is beneficial to discharging erosion particles from a discharge gap, reduces the probability that the erosion particles are adsorbed to the surface of a workpiece again, enhances the mechanical arc breaking effect, converts direct current arc discharge into pulse type arc discharge, effectively improves the deionization process of discharge, and can obviously improve the surface quality of the workpiece.
Drawings
Fig. 1 is a schematic view of a novel electrode for short arc cutting.
Fig. 2 is a top view of a novel electrode for short arc cutting.
FIG. 3 is a perspective view of a novel electrode for short arc machining.
Fig. 4 is a bottom view of a novel electrode for short arc cutting.
Fig. 5 is a schematic structural view of a conventional hollow cylindrical electrode when processing a workpiece.
FIG. 6 is a schematic view showing the structure of the novel electrode of example 1 when machining a workpiece.
In the figure: 1-electrode, 101-circular truncated cone type central hole, 102-circular truncated cone type annular hole and 103-etched particle collecting tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
referring to fig. 1-4, in an embodiment of the present invention, a novel electrode for short arc cutting includes an electrode (1);
the circular truncated cone type center hole (101) is formed in the center line of the electrode (1) and used for conveying a working medium into a discharge gap between the electrode and a workpiece, so that the speed of removing erosion particles in the discharge gap is increased, and the concentration of the erosion particles between electrodes is reduced.
The circular truncated cone type annular holes (102) are uniformly arranged along the central shaft of the electrode (1), and assist the circular truncated cone type central hole (101) to guide the working medium into the discharge gap.
And the corrosion particle collecting tank (103) is arranged on the surface of the electrode 1 and used for corrosion particle collection, arc breaking and heat dissipation.
In the embodiment, the circular truncated cone type central hole (101) and the circular truncated cone type annular hole (102) can increase the flushing pressure, improve the motion characteristics of a gap flow field medium and the machining environment between electrodes, reduce the concentration of erosion particles between the electrodes, enable the discharge state to be more stable, and improve the machining precision; the erosion particle collecting tank (103) is used for collecting erosion particles, so that on one hand, the erosion particles are discharged from the discharge gap, on the other hand, direct current arc discharge can be converted into pulse type arc discharge, the deionization process of discharge is effectively improved, and the surface quality of a workpiece can be obviously improved.
As a preferred embodiment, the etched particle collecting tank (103) is arranged on the surface of the electrode (10) to form a discontinuous surface on the surface of the electrode (1) for etched particle collection, arc breaking and heat dissipation, so that the occurrence rate of short circuit is reduced.
In short arc cutting, one end of an electrode (1) is attached to a jig, the electrode (1) is connected to the positive electrode of a discharge power supply, and a workpiece is connected to the negative electrode of the discharge power supply, thereby performing negative-polarity machining. Compared with a common hollow cylindrical electrode, the circular truncated cone type annular hole (102) is additionally arranged on the periphery of the circular truncated cone type central hole (101), so that the flushing pressure and the flushing area can be effectively increased, the concentration of erosion-removal particles between electrodes is reduced, and the discharge state is more stable. High-density current for breakdown of the medium is formed between the electrode (1) and the workpiece, and a large amount of heat energy is instantaneously released to erode the material. The erosion particle collecting tank can collect erosion particles generated in machining, so that the erosion particles are discharged from a discharge gap, the mechanical arc breaking effect is enhanced, and short circuit is prevented.
As shown in figures 5 and 6, in the short arc cutting process, when the existing hollow cylindrical electrode is used for cutting a workpiece by short arc, the effective working medium is still limited, most of the etched particles are distributed in a discharge area (figure 5), the processing efficiency is low, the etched particles cannot be sufficiently cooled and washed, the stable processing of the workpiece is further influenced, and the surface quality of the workpiece is reduced.
It should be particularly noted that, in the technical scheme, the circular truncated cone-shaped central hole (101) and the circular truncated cone-shaped annular hole (102) enable the area of the conveyed working medium to be large enough to avoid the phenomenon of huge heat increase during workpiece processing, on the other hand, when the working medium flows out of the circular truncated cone-shaped central hole (101) and the circular truncated cone-shaped annular hole (102) to the two-pole discharge gap, the flow velocity of fluid flowing through the channel is gradually reduced to increase the flow velocity gradually, so that the speed of removing erosion particles in the discharge gap is increased, and the erosion particle collecting tank (103) is used for collecting erosion particles, breaking arc and dissipating heat, so that the probability that the erosion particles are adsorbed to the surface of the workpiece again is reduced, the mechanical arc breaking effect is enhanced, the direct current arc discharge is converted into the pulse arc discharge, the deionization process of the discharge is effectively improved, the discharge state is more stable, and the surface quality of the workpiece can be obviously improved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. A new electrode for short arc cutting machining, characterized in that it comprises an electrode (1) and: the circular truncated cone type center hole (101) is formed in the center line of the electrode (1) and is used for conveying a working medium into a discharge gap between the electrode and a workpiece; the circular truncated cone type annular holes (102) are uniformly arranged along the central shaft of the electrode, and assist the circular truncated cone type central hole (101) to guide a working medium into the discharge gap; and the etched particle collecting tank (103) is arranged on the surface of the electrode (1) to form a discontinuous surface on the surface of the electrode (1) for etched particle collection, arc interruption and heat dissipation.
2. The novel electrode for short arc cutting machining according to claim 1, wherein the circular truncated cone-shaped central hole and the circular truncated cone-shaped annular hole are both circular, and the liquid inlet end hole is larger than the liquid outlet end hole.
3. The new electrode for short arc cutting machining according to claim 1, characterized in that the number of the circular truncated cone type circular holes (102) is 8, and the circular truncated cone type circular truncated cone type circular cone type central hole (101).
4. The novel electrode for short arc cutting machining according to claim 1, 2 or 3, characterized in that the etched particle collection grooves (103) are upward from the bottom end of the electrode (1) and form an angle with the surface of the electrode (1), and the number of the etched particle collection grooves is 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221181640.3U CN217433301U (en) | 2022-05-17 | 2022-05-17 | Novel electrode for short arc cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221181640.3U CN217433301U (en) | 2022-05-17 | 2022-05-17 | Novel electrode for short arc cutting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217433301U true CN217433301U (en) | 2022-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221181640.3U Active CN217433301U (en) | 2022-05-17 | 2022-05-17 | Novel electrode for short arc cutting |
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| Country | Link |
|---|---|
| CN (1) | CN217433301U (en) |
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2022
- 2022-05-17 CN CN202221181640.3U patent/CN217433301U/en active Active
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