Cutting saw blade of electric arc saw and electric arc cutting equipment

Abstract

The utility model discloses a cutting saw blade of an electric arc saw, which comprises a saw blade body, a plurality of groove bodies are arranged at the edge of the saw blade body, the groove bodies are arranged along the radial direction of the saw blade body, and the groove bodies are radially and uniformly distributed around the center of the saw blade body, so that the edge of the saw blade body is tooth-shaped. The cutting saw blade of the electric arc saw can effectively ensure the flatness of the cutting surface, improve the cutting quality, reduce the loss of the saw blade and prolong the service life of the saw blade. The utility model further provides electric arc cutting equipment.

Description

Technical Field

[0001] This utility model specifically relates to an arc saw cutting blade and an arc cutting device. Background Technology

[0002] In common metal processing fields, underwater cutting of thick refractory metals is often ineffective due to limitations such as the cutting environment, cutting efficiency, and production costs. This has led to the development of electric arc saws, which can meet the requirements for underwater cutting of refractory metals. With continuous technological advancements, electric arc saw technology continues to develop and improve.

[0003] Arc sawing primarily utilizes the high-temperature electric arc generated between a high-speed moving disc or strip electrode and the workpiece to melt the workpiece, and then removes the molten metal by means of the electrode's movement. The core component of an arc saw is the saw blade, and the material, structure, and form of the saw blade are crucial to the cutting effect.

[0004] like Figure 1 As shown, ordinary arc saw blades are currently made of low-cost carbon steel, with a thickness of 3mm to 6mm and a maximum diameter of φ900mm. However, the cutting surface of such saw blades has large pits and cutting residue, and the saw blade deforms after cutting, resulting in poor cutting quality, high wear, short lifespan, and easy deformation. Utility Model Content

[0005] The inventors have discovered that when an arc saw is used for underwater cutting of refractory metals, the workpiece is typically placed in a liquid during the cutting process. Therefore, the cutting edge of the arc saw blade opposite the workpiece is also submerged in the liquid. Conventional arc saw blades have a generally smooth and regular planar shape, resulting in minimal fluid disturbance between the blade and the workpiece during the cutting rotation. This causes the cutting residue to float around the cutting area, leading to a decrease in the quality of the cut surface and damage to the saw blade itself.

[0006] Therefore, the technical problem to be solved by this utility model is to address the above-mentioned shortcomings in the prior art by providing an arc saw blade that can effectively ensure a smooth cutting surface, improve cutting quality, reduce blade wear, and extend blade life. This utility model also provides an arc cutting device.

[0007] This utility model provides an arc saw cutting blade, including a saw blade body, with multiple grooves formed at the edge of the saw blade body. The grooves are formed along the radial direction of the saw blade body, and each groove is evenly distributed radially around the center of the saw blade body, so that the edge of the saw blade body has a toothed edge.

[0008] Furthermore, the groove is a rectangular groove with a consistent width along the opening direction, so that the edge of the saw blade body has a fan-shaped toothed edge.

[0009] Furthermore, the length of the groove is 4% to 15% of the diameter of the saw blade body, and the width of the groove is 3mm to 6mm.

[0010] Furthermore, the number of the grooves is 4 to 24.

[0011] Furthermore, the two disc surfaces of the saw blade body are provided with recessed grooves to make the middle part of the saw blade body thinner than the edge. The distribution area of ​​the grooves is a ring-shaped area concentric with the saw blade body, and the ring-shaped area is located inside the area where the groove is located and does not overlap with the area where the groove is located.

[0012] Furthermore, in the saw blade body, the thickness of the annular region where the groove is located is 1.5mm to 4mm thinner than the thickness of the thickest part of the saw blade body, and the groove is the area between 30% and 45% of the diameter of the saw blade body from the center outward.

[0013] Furthermore, the saw blade body includes a base and splicing pieces. The splicing pieces are connected to the edge of the base. Multiple splicing pieces are provided and are evenly distributed around the center of the base. Adjacent splicing pieces are spaced apart, thereby forming a groove between two adjacent splicing pieces.

[0014] Furthermore, the sides of the splicing piece are riveted to the base by rivets.

[0015] Furthermore, the thickness of the splicing piece is 1.2 to 2 times the thickness of the substrate.

[0016] This utility model also provides an arc cutting device, including a power supply, a driving device, and the aforementioned arc saw cutting blade. The arc saw cutting blade and the workpiece to be cut are respectively connected to the two poles of the power supply to form an electric arc between the arc saw cutting blade and the workpiece to be cut, thereby achieving cutting by means of the electric arc. The driving device is connected to the arc saw cutting blade and is used to drive the arc saw cutting blade to move and feed.

[0017] This invention relates to an arc saw blade with multiple grooves along its edge. These grooves are radially distributed around the center of the blade, creating a serrated edge. By incorporating these grooves, the blade's side surface is disrupted, enhancing fluid agitation during rotation compared to traditional flat circular saw blades. This improves fluid dynamics, allowing cutting debris to move with the agitated fluid. This improved debris removal reduces surface wear and blade wear, ensuring a smooth cut and extending the blade's lifespan. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a conventional electric arc saw blade in the prior art;

[0019] Figure 2 This is a schematic diagram of the structure of the arc saw cutting blade in Embodiment 1 of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of another arc saw cutting blade in Embodiment 1 of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the arc saw cutting blade in Embodiment 2 of this utility model;

[0022] Figure 5 This is a cross-sectional schematic diagram of the arc saw cutting blade in Embodiment 2 of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the arc saw cutting blade in Embodiment 3 of this utility model.

[0024] In the diagram: 1. Saw blade body; 11. Base; 12. Splicing piece; 2. Groove; 3. Groove. Detailed Implementation

[0025] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience and simplification of the description and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," "installation," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Example 1

[0030] like Figure 2 and Figure 3 As shown, the arc saw cutting blade of this embodiment includes a saw blade body 1. Multiple grooves 2 are opened at the edge of the saw blade body 1. The opening direction of the grooves 2 is along the radial direction of the saw blade body 1. Each groove 2 is radially and evenly distributed around the center of the saw blade body 1 so that the edge of the saw blade body 1 has a toothed edge.

[0031] In this embodiment, by setting a groove 2, the groove 2 itself interrupts the original complete planar shape of the side of the saw blade body 1. Therefore, during the rotation process, compared with the traditional integral planar circular saw blade, the grooved saw blade setting scheme of this embodiment enhances the disturbance of the fluid, further improves the hydrodynamic behavior characteristics in the fluid domain, and allows the residue during the cutting process to move away with the disturbed fluid. That is, the effect of liquid disturbance can better realize the discharge of cutting residue. It is precisely because the cutting residue is discharged that the degradation of the cutting surface quality and the wear of the saw blade itself caused by the original residue are directly reduced, thereby further ensuring the flatness of the cutting surface, improving the cutting quality, and also reducing saw blade wear and extending the saw blade service life.

[0032] In this embodiment, the groove 2 is a rectangular groove with a consistent width along the opening direction, so that the edge of the saw blade body 1 has a fan-shaped toothed edge. That is, as Figure 2As shown, the groove 2 has a uniformly wide strip structure, with its length direction being the opening direction (i.e., the radial direction of the saw blade body 1). This results in the edges of the saw blade body 1 being divided into fan-shaped structures by the various grooves 2. The rectangular grooves provide more space for heat dissipation, which is beneficial for heat dissipation. Furthermore, the uniform width of the structure promotes the uniformity of heat dissipation across the entire saw blade, reducing thermal damage on the cutting surface, lowering the operating temperature of the saw blade, and potentially improving the quality of the machined surface and extending tool life. On the other hand, the rectangular grooves provide more space for material discharge, helping to reduce the accumulation of sawdust and material residue.

[0033] In this embodiment, the length of the groove 2 is 4% to 15% of the diameter of the saw blade body 1, and the width of the groove 2 is 3mm to 6mm. This range of groove structure allows the heat generated by the saw blade during cutting to dissipate more quickly, reducing saw blade deformation caused by high temperatures and extending the saw blade's service life. Simultaneously, the grooved structure helps improve the flatness and precision of the cut surface and facilitates the rapid removal of cutting debris. In this embodiment, the number of grooves 2 ranges from 4 to 24, and the specific number of grooves can be selected based on the cutting conditions and the structural strength of the saw blade. Increasing the number of grooves means more cooling channels, allowing for faster heat dissipation and reducing saw blade deformation and wear caused by high temperatures, thereby maintaining cutting speed and precision. The selection of the number of grooves also needs to consider the type and hardness of the material being cut. For materials with higher hardness, more grooves may be needed to improve heat dissipation and cutting efficiency; while for softer materials, fewer grooves may be needed to maintain the structural strength of the saw blade.

[0034] This embodiment can also further increase the rigidity of the saw blade body 1 by increasing the thickness of the saw blade body 1.

[0035] This embodiment also provides a comparison with existing conventional circular saws, as follows:

[0036] Ordinary circular saw (such as) Figure 1 The saw blade (as shown) is machined as a single piece, with a thickness of 3mm and a diameter of φ850mm. It possesses a certain degree of rigidity and can be used under conditions without special cutting requirements. After a single cut, the saw blade experiences 15.8mm of wear in the diameter direction, a minimum kerf width of 7.5mm, a maximum kerf width of 15.6mm, and significant pitting and cutting residue on the cut surface. The saw blade also exhibits considerable deformation after cutting.

[0037] In this embodiment, the thickness of the saw blade body 1 is increased to 6mm, thereby further increasing the rigidity of the saw blade body 1. The length of the groove 2 on the saw blade body 1 is 80mm, the width is 6mm, and the number of grooves can be selected as 6 (e.g., Figure 2As shown, this can be called a type six grooving circular saw. After a single cut, the saw blade wear in the diameter direction is 3.4mm, the minimum kerf is 7.5mm, and the maximum kerf is 7.7mm. It is evident that the wear and kerf width have decreased, and the kerf width is more uniform. The cut is neat, the surface is flat, and there is no obvious residue. In another optional embodiment, the number of grooves can be selected as 24 (e.g., Figure 3 As shown, it can be called a Type 24 slotted circular saw.

[0038] This embodiment also allows for the selection of whether to apply an insulating layer depending on the specific operating conditions. The inventors have discovered that the numerous problems with conventional arc saw blades, i.e., ordinary circular saws, are also due to a large amount of lateral discharge between the saw blade and the workpiece being cut. This large amount of lateral discharge causes the saw blade to deform, resulting in poor cutting quality, high wear and tear, and short service life.

[0039] In this embodiment, when selecting the insulating layer for the arc saw cutting blade, the insulating layer is coated on two disc surfaces perpendicular to the axial direction in the saw blade body 1. This is equivalent to providing an insulated circular saw in this embodiment. The insulating layer does not obstruct the cutting edge of the saw blade body 1, allowing an electric arc to be generated between the saw blade and the workpiece to complete the cut. Instead, it covers the side of the saw blade body 1, thereby reducing the degree of lateral discharge between the saw blade body 1 and the workpiece. This arrangement effectively reduces deformation caused by lateral discharge between the saw blade and the workpiece, and also avoids large pits and cutting residue on the cutting surface, keeping the cutting surface smooth, improving cutting quality, reducing saw blade wear, and extending service life. Specifically, when the original saw blade body 1 has a thickness of 3mm and a diameter of φ850mm, after coating with the insulating layer, after a single cut, there is no significant wear in the diameter direction of the saw blade, the kerf width is 5mm, the cutting surface is smooth, and after multiple cuts, the saw blade shows slight deformation.

[0040] In this embodiment, the insulating layer is formed by coating two surfaces of the saw blade body 1 with an insulating ceramic material. Compared to conventional insulating materials, the insulating ceramic material can further improve the retention time of the insulating layer and extend the service life of the saw blade body 1. The thickness of the insulating layer is 0.2mm to 0.4mm. Within this thickness range, the insulating layer is neither too thin to provide adequate insulation nor too thick to easily detach, thus exhibiting good adhesion to the substrate. This achieves the purpose of insulation while also considering manufacturing costs. The insulating layer is applied using a high-temperature spraying process, possessing high-temperature resistance, which ensures long-term operation in the high-temperature environment generated by arc cutting.

[0041] Because the saw blade body 1 in this embodiment has a groove 2, the groove 2 itself forms a non-sprayed area on its two discs that is not covered by the insulating layer. The non-sprayed area is evenly distributed around the center of the saw blade body 1, dividing the insulating layer so that the insulating layer is distributed in a fan-shaped tooth pattern at the edge of the saw blade body 1. That is, this embodiment provides an intermittently sprayed insulating ceramic saw blade or an intermittently insulating circular saw. The insulating layer that completely covers both sides of the saw blade body 1 almost avoids all side discharge, which may reduce the cutting speed. However, the inventors have found that appropriate side discharge can improve the cutting rate. Therefore, by designing this intermittently sprayed insulating ceramic saw blade in this embodiment, a small amount of side discharge exists between the saw blade body 1 and the workpiece to be cut in the non-sprayed area, thereby improving the cutting speed through appropriate side discharge.

[0042] In this embodiment, the material of the saw blade body 1 can be selected from conductive materials including but not limited to graphite, carbon steel, stainless steel, molybdenum, copper-tungsten alloy, etc. The macroscopic differences between the materials are mainly reflected in the wear rate of the saw blade material itself, which can be freely selected according to processing requirements.

[0043] Example 2

[0044] This embodiment is basically the same as Embodiment 1, except that, as Figure 4 and Figure 5 As shown, in this embodiment, the two disc surfaces of the saw blade body 1 are provided with recessed grooves 3, so that the middle part of the saw blade body 1 is thinner than the edge. The distribution area of ​​the grooves 3 is a ring-shaped area concentric with the saw blade body 1, and the ring-shaped area is located inside the area where the groove body 2 is located, and does not coincide with the area where the groove body 2 is located. This embodiment can also choose whether to spray an insulating layer according to the specific working conditions. It is equivalent to providing a grooved circular saw or a grooved insulating circular saw. The difference between the two is whether the central groove 3 is sprayed with insulating ceramic material. That is, when insulating ceramic is sprayed, the spraying position is the area where the groove 3 is located.

[0045] The groove 3 reduces the thickness of the center of the saw blade body 1, which also reduces the side discharge of the saw blade body 1 during the cutting process. Therefore, the solution in this embodiment can be applied to working conditions with certain positional accuracy requirements. This type of saw blade avoids saw blade deformation and energy loss caused by side discharge during the cutting process, further improving work efficiency and cutting quality.

[0046] In this embodiment, the thickness of the annular region containing the groove 3 in the saw blade body 1 is 1.5mm to 4mm thinner than the thickness of the thickest part of the saw blade body 1. The groove 2 is located in the area from the center of the saw blade body 1 outwards to 30% to 45% of its diameter. A reasonable groove thickness and range can effectively avoid the discharge effect and mechanical contact between the saw blade and the workpiece being cut, thereby improving the cutting efficiency of arc cutting and the service life of the saw blade.

[0047] Specifically, in this embodiment, the overall thickness of the saw blade body 1 is 6mm, the thickness of the area where the middle groove 4 is located is 4.5mm, and the dimensions of the groove 3 at the edge are 35mm (length) * 6mm (width).

[0048] Example 3

[0049] This embodiment is basically the same as Embodiment 1, except that, in this embodiment, as follows... Figure 6 As shown, the saw blade body 1 includes a base 11 and splicing pieces 12. The splicing pieces 12 are connected to the edge of the base 11. Multiple splicing pieces 12 are provided and are evenly distributed around the center of the base 11. Adjacent splicing pieces 12 are spaced apart, thereby forming a groove 2 between two adjacent splicing pieces 12.

[0050] In this embodiment, the sides of the splicing piece 12 are riveted to the base 11 by rivets. Specifically, each side of the splicing piece 12 is connected to the base 11 by two rivets (a total of four rivets; the specific riveting method is the current conventional riveting method, which will not be described in detail here).

[0051] In this embodiment, the thickness of the splicing piece 12 is 1.2 to 2 times the thickness of the base 11. This thickness ratio provides sufficient strength for the splicing structure, ensuring structural integrity and safety during operation. In this embodiment, the base 11 is 4 mm thick, and the splicing piece 12 is 7 mm thick.

[0052] Compared to traditional circular saw blades and the slotted saw blade in Example 1, the embedded saw blade in this embodiment is characterized by the fact that the base 11 of the saw blade body 1 is thinner than the embedded saw blade (i.e., splicing piece 12). During cutting, because the distance between the base 11 and the component (i.e. the workpiece to be cut) is larger, the saw blade is less likely to experience lateral discharge, which greatly reduces the possibility of saw blade deformation.

[0053] Meanwhile, due to the use of an inlaid saw blade, the saw blade base 11 can be made of a material with high hardness and rigidity to ensure that the saw blade does not deform or deforms very little during continuous cutting; while the splicing plate 12 can be made of a material that is resistant to high temperature and corrosion. In this example, the splicing plate 12 is specifically made of copper-tungsten alloy, which can reduce the wear of the saw blade, thereby extending the number of times the saw blade can be used and reducing the number of times the saw blade needs to be replaced in engineering applications.

[0054] This embodiment also allows for the selection of whether to spray an insulating layer depending on the specific operating conditions. Essentially, this embodiment provides either an inlaid circular saw or an inlaid insulated circular saw, the difference being whether the base 11 is coated with insulating ceramic material. In this embodiment, the processing technology for this type of circular saw involves riveting and welding between the base 11 and the splicing piece 12 to ensure the strength and stability of the saw blade. Using this saw blade results in clean cuts, smooth surfaces, no obvious residue, and no significant deformation of the saw blade after cutting.

[0055] Arc sawing technology uses a direct current arc to melt metal for cutting, but traditional equipment needs improvement in efficiency, quality, and blade life. The saw blade is one of the core components of an arc saw, and its material, structure, and form significantly affect cutting conditions, efficiency, and quality. Therefore, optimization and improvement of existing saw blade materials and structures are necessary to achieve stable and efficient underwater cutting of various metals. This invention designs various saw blades suitable for arc sawing devices to meet diverse requirements and achieve industrial production. Compared to cutting metal directly through a direct current arc generated between a standard disc saw blade and the workpiece, this invention designs various arc saw blades with different structures to improve cutting efficiency, quality, and blade life. Specific structural forms include integral and embedded types, and the saw blade sides can be coated with insulating material or not. The metal being cut is connected to the positive terminal of the power supply, and the saw blade is connected to the negative terminal. Cutting of the workpiece is achieved through saw blade rotation and station feed.

[0056] This invention, through the above embodiments, designs a novel arc saw blade, optimizing the blade structure, improving arc stability and cutting efficiency, enhancing cutting quality, and extending blade life. Through continuous research and innovation, the blade's performance has been significantly improved, further enhancing cutting efficiency and quality. The use of high-strength, high-wear-resistant materials and special coating technology enables the blade to operate stably in harsh environments. This innovation provides a more efficient and precise cutting solution for the metal processing industry and is expected to play a significant role in more fields.

[0057] The various saw blades described in the above embodiments meet different needs, including those made of conductive materials such as graphite and carbon steel, with integral and embedded structures, as well as saw blades coated with insulating materials. These saw blades achieve workpiece cutting through rotation and feed, resulting in high efficiency and low cost.

[0058] The above embodiments of this invention optimize and improve the saw blade material and structure to achieve stable and efficient underwater cutting of various metals. Optimization may include using more advanced materials, such as high-speed steel, cemented carbide, or ceramics. These improvements can increase the cutting efficiency and service life of the arc saw blade, reduce production costs, and contribute to the sustainable development of the metal processing industry.

[0059] Example 4

[0060] The arc cutting equipment of this embodiment includes a power supply, a driving device, and an arc saw cutting blade as described in embodiments 1 to 3. The arc saw cutting blade and the workpiece to be cut are respectively connected to the two poles of the power supply to form an electric arc between the arc saw cutting blade and the workpiece to be cut, thereby achieving cutting by means of the electric arc. The driving device is connected to the arc saw cutting blade and is used to drive the arc saw cutting blade to move and feed.

[0061] The arc cutting equipment in this embodiment, except for the saw blade, is basically the same as the existing conventional arc saw equipment. It can be replaced with conventional parts available on the market. The power supply can be selected according to the cutting requirements. The drive device can be selected according to the need for an appropriate motor. These are all conventional contents in the field, so they will not be described in detail here.

[0062] The grooved circular saw of Example 2 and the inlaid circular saw of Example 3 basically meet the requirements of underwater arc saw cutting. Without considering economic cost and large-scale production, the grooved circular saw of Example 2 and the inlaid insulated circular saw of Example 3 can achieve stable and efficient underwater arc cutting of various refractory metals. The cutting process has the characteristics of high quality, low loss, long life and no deformation.

[0063] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

[0064] Those skilled in the art should understand that the above detailed description is for illustrative purposes only and is not intended to limit the scope of the invention. The scope of protection of this invention is defined by the claims and their equivalents.

Claims

1. An arc saw cutting blade, characterized in that: Includes a saw blade body (1), wherein multiple grooves (2) are formed at the edge of the saw blade body (1). The grooves (2) are opened in the radial direction of the saw blade body (1), and each groove (2) is radially and evenly distributed around the center of the saw blade body (1) so that the edge of the saw blade body (1) is a toothed edge. The saw blade body (1) includes a base (11) and a splicing piece (12), the splicing piece (12) being connected to the edge of the base (11). The splicing pieces (12) are provided in multiples and are evenly distributed around the center of the base (11). Adjacent splicing pieces (12) are spaced apart, thereby forming a groove (2) between two adjacent splicing pieces (12).

2. The arc saw cutting blade according to claim 1, characterized in that: The groove (2) is a rectangular groove with a consistent width along the opening direction, so that the edge of the saw blade body (1) has a fan-shaped toothed edge.

3. The arc saw cutting blade according to claim 1, characterized in that: The length of the groove (2) is 4% to 15% of the diameter of the saw blade body (1), and the width of the groove (2) is 3mm to 6mm.

4. The arc saw cutting blade according to claim 3, characterized in that: The number of the grooves (2) is 4 to 24.

5. The arc saw cutting blade according to any one of claims 1 to 4, characterized in that: The saw blade body (1) has recessed grooves (3) on both disc surfaces to make the middle part of the saw blade body (1) thinner than the edge. The groove (3) is distributed in a ring-shaped area concentric with the saw blade body (1), and the ring-shaped area is located inside the area where the groove (2) is located, and does not overlap with the area where the groove (2) is located.

6. The arc saw cutting blade according to claim 5, characterized in that: In the saw blade body (1), the thickness of the annular region where the groove (3) is located is 1.5 mm to 4 mm thinner than the thickness of the thickest part of the saw blade body (1). The groove (3) is located in the area from the center outward to 30% to 45% of the diameter of the saw blade body (1).

7. The arc saw cutting blade according to claim 1, characterized in that: The side of the splicing piece (12) is riveted to the base (11) by rivets.

8. The arc saw cutting blade according to claim 1, characterized in that: The thickness of the splicing piece (12) is 1.2 to 2 times the thickness of the substrate (11).

9. An arc cutting device, characterized in that: Includes a power supply, a drive unit, and an arc saw cutting blade as described in any one of claims 1 to 8. The arc saw blade and the workpiece to be cut are respectively connected to the two poles of a power source to form an electric arc between the arc saw blade and the workpiece, thereby achieving cutting by means of the electric arc. The drive device is connected to the arc saw cutting blade and is used to drive the arc saw cutting blade to move and feed.

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