Wire EDM machine

Abstract

This utility model relates to the field of wire EDM technology, specifically to a wire EDM machine. This application aims to solve the problem of low cutting efficiency in existing wire EDM machines. To this end, the wire EDM machine of this application includes a machine frame and a cutting device and a feeding device mounted on the machine frame. The cutting device includes a main roller assembly, which includes upper and lower main rollers spaced apart vertically. The number of lower main rollers is at least three and they are spaced apart along a first horizontal direction. The cutting wire mesh between each pair of adjacent lower main rollers forms a cutting station. The feeding device is located below the lower main rollers and is used to move the workpiece toward the cutting wire mesh. The cutting device of this utility model can form at least two cutting stations. During cutting operations, at least two workpieces can be mounted on the workpiece table, and the feeding device moves at least two workpieces toward the cutting wire mesh, thereby improving the cutting efficiency of the wire EDM machine.

Description

Technical Field

[0001] This utility model relates to the field of wire cutting technology, specifically to a wire cutting machine. Background Technology

[0002] Wire EDM is a cutting process that uses the high-speed reciprocating motion of a cutting wire to bring abrasive into the processing area of ​​the workpiece to be cut for grinding, thereby cutting the workpiece (such as a high-hardness and brittle material) into hundreds of thin slices at once.

[0003] Multi-wire cutting is typically performed in wire EDM machines, which mainly consist of a cutting device and a feeding device. The cutting device includes a main roller assembly, on which the cutting wire is wound to form a cutting wire mesh. The feeding device carries the workpiece toward the cutting wire mesh. Existing main roller assemblies generally include two main rollers spaced apart horizontally, with the cutting wire mesh between the two main rollers forming a cutting station. Only one workpiece can be cut at a time, resulting in low cutting efficiency. Utility Model Content

[0004] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem of low cutting efficiency of existing wire cutting machines.

[0005] In a first aspect, the present invention provides a wire cutting machine, including a machine frame and a cutting device and a feeding device mounted on the machine frame. The cutting device includes a main roller assembly, and a cutting wire is wound around the main roller assembly to form a cutting wire mesh. The main roller assembly includes an upper main roller and a lower main roller that are spaced apart vertically. The number of lower main rollers is at least three and they are spaced apart along a first horizontal direction. The cutting wire mesh between each two adjacent lower main rollers forms a cutting station. The feeding device is located below the lower main rollers and is used to move the workpiece toward the cutting wire mesh.

[0006] In the preferred embodiment of the wire cutting machine described above, the main roller assembly further includes a mounting base, the upper main roller is rotatably mounted on the mounting base, the machine frame is provided with a first positioning structure, and the mounting base is provided with a second positioning structure. One of the first positioning structure and the second positioning structure is a vertically arranged positioning shaft, and the other of the first positioning structure and the second positioning structure is a positioning hole adapted to the positioning shaft. The positioning shaft is inserted into the positioning hole and can rotate relative to the positioning hole. The mounting base and the machine frame are fixedly connected by a connecting assembly.

[0007] In the preferred embodiment of the wire cutting machine described above, the connecting assembly includes a plurality of elongated holes disposed on the mounting base and a plurality of connecting bolts disposed on the machine frame, or includes a plurality of elongated holes disposed on the machine frame and a plurality of connecting bolts disposed on the mounting base, wherein the plurality of connecting bolts pass through the corresponding elongated holes to fix the mounting base to the machine frame; and / or the second positioning structure is located directly below the upper main roller and is disposed at the middle part corresponding to the length direction of the upper main roller.

[0008] In the preferred embodiment of the wire EDM machine described above, the feeding device includes a vertical feeding component and a horizontal feeding component connected to the vertical feeding component, wherein the horizontal feeding component is connected to a workpiece table for fixing the workpiece.

[0009] In the preferred embodiment of the wire cutting machine described above, the vertical feed assembly includes a vertical drive mechanism and a lifting slide box connected to the vertical drive mechanism, and the horizontal feed assembly is fixedly installed on the top of the lifting slide box.

[0010] In the preferred embodiment of the wire cutting machine described above, the wire cutting machine further includes a cutting chamber protective cover, a lifting drive assembly, and a fall prevention assembly installed on the machine frame. The lifting drive assembly is connected to the cutting chamber protective cover and can drive the cutting chamber protective cover to move up and down in the vertical direction. The fall prevention assembly is used to abut or insert with the cutting chamber protective cover after the cutting chamber protective cover is opened to prevent the cutting chamber protective cover from falling.

[0011] In the preferred embodiment of the above-mentioned wire cutting machine, the anti-fall component includes an anti-fall driving component and a support component connected to the anti-fall driving component. The support component is horizontally arranged, and the cutting chamber protective cover is provided with an abutment structure that cooperates with the support component. After the cutting chamber protective cover is opened, the anti-fall driving component drives the support component to extend so that the support component is supported under the abutment structure.

[0012] In the preferred embodiment of the wire cutting machine described above, the wire cutting machine further includes a cutting fluid spraying assembly installed on the machine frame. The cutting fluid spraying assembly includes an upper plate and a lower plate distributed vertically. The upper plate is provided with a plurality of first through holes, and the lower plate is provided with a plurality of second through holes. The first through holes and the second through holes are staggered.

[0013] In the preferred embodiment of the wire cutting machine described above, the density of the first through hole is greater than the density of the second through hole.

[0014] In the preferred embodiment of the wire EDM machine described above, there is one upper main roller and three lower main rollers, with the upper main roller located directly above the middle lower main roller among the three lower main rollers.

[0015] With the above technical solution adopted, the cutting device of the wire EDM machine of this utility model can form at least two cutting stations. During the cutting operation, at least two workpieces can be installed on the workpiece table, and the feeding device can carry at least two workpieces toward the cutting wire mesh, thereby improving the cutting efficiency of the wire EDM machine.

[0016] Furthermore, the wire cutting machine of this utility model has a rotatable positioning shaft and positioning hole between the machine frame and the mounting base. When thick sheet cutting is required, the connecting components are loosened, and the mounting base, along with the upper main roller, rotates to a preset angle around the axis of the positioning shaft. This ensures that the included angle of the cutting wire during the wire mesh hanging process can adapt to the processing requirements of thick sheet cutting, thereby improving the adaptability of the wire cutting machine of this application.

[0017] Furthermore, the wire cutting machine of this utility model has an anti-fall component installed on the frame of the machine. When the protective cover of the cutting chamber is opened, the anti-fall component is activated and abuts or plugs into the protective cover of the cutting chamber, which can prevent the protective cover of the cutting chamber from falling and improve safety.

[0018] Furthermore, the wire cutting machine of this invention, by employing a combination of an upper plate and a lower plate, and by staggering the first through hole on the upper plate and the second through hole on the lower plate, helps to improve the uniformity of the cutting fluid spray.

[0019] Furthermore, the wire cutting machine of this invention improves the uniformity of the cutting fluid spray by making the density of the first through holes on the upper plate greater than the density of the second through holes on the lower plate. Attached Figure Description

[0020] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of the wire cutting machine of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the wire cutting machine of this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the main roller assembly of the wire EDM machine according to this utility model; Figure 4 This is a structural schematic diagram of the upper main roller and mounting base of the main roller assembly of this utility model; Figure 5 This is a schematic diagram of the mounting base of the main roller assembly of this utility model; Figure 6 This is a schematic diagram of the feeding device of the wire cutting machine according to this utility model; Figure 7 This is a schematic diagram of the vertical feed assembly of the feed device of this utility model; Figure 8 This is a schematic diagram of the anti-fall component of the wire cutting machine according to this utility model; Figure 9 This is a schematic diagram of the lifting drive assembly of the wire cutting machine according to this utility model; Figure 10 This is a schematic diagram of the cutting fluid spraying assembly of the wire EDM machine according to this utility model.

[0021] List of reference numerals in the attached drawings: 1. Overall frame; 2. Cutting device; 21. Upper main roller; 22. Lower main roller; 23. Cutting wire mesh; 24. Mounting base; 241. Positioning shaft; 242. Oblong hole; 3. Feeding device; 31. Vertical feed assembly; 311. Vertical drive mechanism; 3111. First servo motor; 3112. Lifting screw; 3113. Nut adapter plate; 312. Lifting slide box; 32. Horizontal feed assembly; 33. Feeding base; 4. Workpiece table; 5. Cutting chamber protective cover; 6. Lifting drive assembly; 61. Drive motor; 62. Transmission shaft; 63. Gear; 7. Fall protection assembly; 71. Fall protection drive component; 72. Support component; 73. Bushing; 8. Cutting fluid spray assembly; 81. Upper plate; 82. Lower plate; 83. Spray box; 84. Liquid supply pipe. Detailed Implementation

[0022] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0023] It should be noted that in the description of this utility model, terms such as "upper," "lower," "top," "bottom," "left," "right," "front," and "rear," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] Furthermore, it should be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connect," and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Specifically, this application provides a wire cutting machine, such as Figures 1 to 6 As shown, the wire cutting machine of this application includes a machine frame 1 and a cutting device 2 and a feeding device 3 mounted on the machine frame 1.

[0026] The cutting device 2 includes a main roller assembly, on which cutting wires are wound to form a cutting wire mesh 23. The main roller assembly includes upper main rollers 21 and lower main rollers 22 spaced apart vertically. The number of lower main rollers 22 is at least three and they are arranged along a first horizontal direction. Figure 3 The cutting wire mesh 23 is distributed in a left-right direction in the middle. Each pair of adjacent lower main rollers 22 forms a cutting station. The feeding device 3 is located below the lower main rollers 22 and is used to move the workpiece toward the cutting wire mesh 23.

[0027] In other words, the cutting device 2 of this application has at least two cutting stations. When performing cutting operations, at least two workpieces can be installed on the workpiece table 4, and the feeding device 3 can carry at least two workpieces toward the cutting wire mesh 23, thereby improving the cutting efficiency of the cutting device 2.

[0028] For example, such as Figure 3 As shown, the main roller assembly of this application includes an upper main roller 21 and three lower main rollers 22. The three lower main rollers 22 are spaced apart along the left-right direction (denoted as the X direction). The upper main roller 21 and the lower main rollers 22 are both horizontally arranged. The axes of the upper main roller 21 and the lower main rollers 22 are perpendicular to the X direction. The upper main roller 21 is located directly above the middle lower main roller 22 among the three lower main rollers 22. The cutting wire mesh 23 between the left lower main roller 22 and the middle lower main roller 22 forms a cutting station, and the right lower main roller 22 and the middle lower main roller 22 also form a cutting station, that is, a total of two cutting stations are formed. Two workpieces can be installed on the workpiece table 4 at one time. The two workpieces are spaced apart along the X direction, as shown. Figure 6 As shown, the workpiece table 4 is installed on top of the feeding device 3, and the feeding device 3 feeds two workpieces synchronously.

[0029] It should be noted that the number of lower main rollers 22 is not limited to the three mentioned above. In practical applications, those skilled in the art can flexibly set the specific number of lower main rollers 22 according to specific needs. For example, the number of lower main rollers 22 can be set to four or five, etc. Similarly, the number of upper main rollers 21 is not limited to the one described above. In practical applications, those skilled in the art can flexibly set the number of upper main rollers 21 according to the number of lower main rollers 22.

[0030] In addition, it should be noted that the cutting device 2 of this application includes not only the main roller assembly described above, but also some other conventional structures, such as a main roller motor for driving the main roller to rotate, a take-up and untake-up assembly, etc. The take-up and untake-up assembly is used for unloading and taking up the cutting wire. There are two take-up and untake-up assemblies, which are located on both sides of the main roller assembly. During operation, one is used for unloading the cutting wire and the other is used for taking up the cutting wire.

[0031] Preferably, such as Figure 4 and Figure 5 As shown, the main roller assembly of this application also includes a mounting base 24. The upper main roller 21 is rotatably mounted on the mounting base 24. A first positioning structure is provided on the machine frame 1, and a second positioning structure is provided on the mounting base 24. The second positioning structure is a vertically arranged positioning shaft 241, and the first positioning structure is a positioning hole adapted to the positioning shaft 241. The positioning shaft 241 is inserted into the positioning hole and can rotate relative to the positioning hole. The mounting base 24 and the machine frame 1 are fixedly connected by a connecting assembly.

[0032] By setting a rotatable positioning shaft 241 and positioning hole between the machine frame 1 and the mounting base 24, when thick sheet cutting is required, the connecting assembly is loosened, allowing the mounting base 24 to rotate with the upper main roller 21 around the axis of the positioning shaft 241 to a preset angle, thereby ensuring that the included angle of the cutting wire during the wire hanging process of the cutting wire mesh 23 can adapt to the processing requirements of thick sheet cutting, thus improving the adaptability range of the wire cutting machine of this application.

[0033] It should be noted that, in practical applications, those skilled in the art can also change the positions of the positioning shaft 241 and the positioning hole, that is, set the positioning hole on the mounting base 24 of the main roller assembly and set the positioning shaft 241 on the frame 1 of the whole machine. Such flexible adjustment and change does not deviate from the principle and scope of this application and should be limited to the protection scope of this application.

[0034] Preferably, such as Figure 4 As shown, the second positioning structure on the mounting base 24 (i.e. Figure 4 The positioning shaft 241 is located directly below the upper main roller 21 and is positioned at the middle of the length direction of the upper main roller 21.

[0035] That is, the axis of the positioning shaft 241 on the mounting base 24 intersects the axis of the upper main roller 21, and the intersection point is located at the midpoint of the length direction of the upper main roller 21.

[0036] Preferably, such as Figure 5 As shown, the connection component of this application includes a plurality of elongated holes 242 disposed on the mounting base 24 and a plurality of connecting bolts disposed on the frame 1. The plurality of connecting bolts pass through the corresponding elongated holes 242 to fix the mounting base 24 to the frame 1.

[0037] For example, four elongated holes 242 are provided on the mounting base 24. The four elongated holes 242 are respectively located at the four corners of the mounting base 24. The elongated holes 242 are preferably arc-shaped. The four elongated holes 242 are located on a circle with the positioning shaft 241 as the center. The frame 1 of the whole machine is provided with a connecting bolt at the position corresponding to each of the four elongated holes 242. The screw of the connecting bolt passes through the elongated hole 242 on the mounting base 24. Then the nut is tightened to fix the mounting base 24 to the frame 1 of the whole machine. When it is necessary to adjust the angle of the upper main roller 21, the nut is loosened, so that the mounting base 24, with the upper main roller 21, rotates relative to the frame 1 with the positioning shaft 241 as the axis. After rotating to the preset angle, the nut is tightened again.

[0038] It should be noted that the number of elongated holes 242 is not limited to the four mentioned above. In practical applications, those skilled in the art can flexibly set the specific number of elongated holes 242 according to design requirements. For example, the number of elongated holes 242 can be set to three, five or more.

[0039] Furthermore, it should be noted that, in practical applications, those skilled in the art may also change the positions of the elongated hole 242 and the connecting bolt, that is, place the elongated hole 242 on the frame 1 of the whole machine and place the connecting bolt on the mounting base 24. Such flexible adjustments and changes do not deviate from the principles and scope of this application and should be limited to the protection scope of this application.

[0040] Preferably, such as Figure 6 and Figure 7 As shown, the feeding device 3 of this application includes a vertical feeding component 31 and a horizontal feeding component 32 connected to the vertical feeding component 31. The horizontal feeding component 32 is connected to a workpiece stage 4 for fixing the workpiece.

[0041] When it is necessary to cut an arc-shaped piece, the vertical feed assembly 31 can drive the horizontal feed assembly 32 and the workpiece to move vertically upward, while the horizontal feed assembly 32 drives the workpiece to move horizontally.

[0042] It should be noted that this application does not limit the specific types of the vertical feed assembly 31 and the horizontal feed assembly 32. For example, they can be configured as motor-driven feed assemblies or hydraulically driven feed assemblies, etc.

[0043] Preferably, such as Figure 6 and Figure 7 As shown, the vertical feed assembly 31 of this application includes a vertical drive mechanism 311 and a lifting slide box 312 connected to the vertical drive mechanism 311, and the horizontal feed assembly 32 is fixedly installed on the top of the lifting slide box 312.

[0044] For example, the vertical feed assembly 31 also includes a feed base 33, which is fixedly connected to the frame 1. The vertical drive mechanism 311 includes a first servo motor 3111 and a screw jack. The screw jack includes a screw jack 3112 and a nut adapter plate 3113. The first servo motor 3111 and the screw jack are mounted on the feed base 33. The screw jack is connected to the first servo motor 3111. The screw jack 3112 is vertically arranged. The nut adapter plate 3113 is sleeved on the screw jack 3112. The lifting slide box 312 is fixedly connected to the nut adapter plate 3113. The first servo motor 3111 provides driving force to drive the screw jack 3112 to rotate. The nut adapter plate 3113 moves along the screw jack 3112 as the screw jack 3112 rotates. The lifting slide box 312 moves up and down, and the feed base 33 is slidably connected to the lifting slide box 312 via a guide rail slider mechanism. The lifting slide box 312 can move vertically along with the nut adapter plate 3113. The horizontal feed assembly 32 includes a horizontal base fixedly installed on the top of the lifting slide box 312, a second servo motor, a ball screw, and a screw nut sleeved on the ball screw. The screw nut is fixedly connected to the bottom surface of the workpiece table 4. The workpiece is installed on the top surface of the workpiece table 4. The ball screw extends horizontally. The second servo motor can drive the ball screw to rotate. As the ball screw rotates, the screw nut moves the workpiece table 4 along the length of the ball screw. A guide rail slider mechanism is also provided between the workpiece table 4 and the horizontal base to guide the workpiece table 4.

[0045] Preferably, such as Figure 1 , Figure 2 , Figure 8 and Figure 9 As shown, the wire cutting machine of this application also includes a cutting chamber protective cover 5, a lifting drive assembly 6, and a fall prevention assembly 7 installed on the machine frame 1. The lifting drive assembly 6 is connected to the cutting chamber protective cover 5 and can drive the cutting chamber protective cover 5 to move up and down in the vertical direction. The fall prevention assembly 7 is used to abut or insert with the cutting chamber protective cover 5 after the cutting chamber protective cover 5 is opened to prevent the cutting chamber protective cover 5 from falling.

[0046] The machine frame 1 contains a cutting chamber, and the main roller assembly is installed inside this cutting chamber. During the cutting operation, such as... Figure 1 As shown, the cutting chamber is enclosed by the cutting chamber protective cover 5. After the cutting operation is completed, as... Figure 2 As shown, the cutting chamber protective cover 5 is driven to move vertically upward by the lifting drive component 6, opening the cutting chamber. After the cutting chamber protective cover 5 is opened, the anti-fall component 7 is activated, abutting or inserting with the cutting chamber protective cover 5, which can prevent the cutting chamber protective cover 5 from falling and improve safety.

[0047] Preferably, such as Figure 8 As shown, the fall protection component 7 of this application includes a fall protection drive component 71 and a support component 72 connected to the fall protection drive component 71. The support component 72 is horizontally arranged. The cutting chamber protective cover 5 is provided with an abutment structure that cooperates with the support component 72. After the cutting chamber protective cover 5 is opened, the fall protection drive component 71 drives the support component 72 to extend so that the support component 72 is supported under the abutment structure.

[0048] For example, such as Figure 8 and Figure 9 As shown, the lifting drive assembly 6 includes a drive motor 61, a transmission shaft 62, a gear 63 mounted on the transmission shaft 62, and a rack (not shown) mounted on the cutting chamber protective cover 5. The rack extends vertically. The drive motor 61 drives the transmission shaft 62 to rotate, which in turn drives the gear 63 to rotate. The gear 63 meshes with the rack on the cutting chamber protective cover 5. Through the engagement of the gear 63 and the rack, the cutting chamber protective cover 5 moves up and down. The anti-fall drive component 71 is a cylinder, and the support component 72 is a horizontally mounted support rod. The left end of the support rod is connected to the piston rod of the cylinder. The abutment structure that engages with the support rod is the rack mounted on the cutting chamber protective cover 5. After the cutting chamber protective cover 5 is opened by the lifting drive assembly 6, the cylinder drives the support rod to extend in, so that the right end of the support rod extends below the rack and abuts against the bottom end of the rack to prevent the cutting chamber protective cover 5 from falling. To improve the stability of the support rod, the anti-fall assembly 7 also includes a bushing 73 installed on the frame 1. The bushing 73 is located directly in front of the cylinder, and the right end of the support rod is inserted into the bushing 73 and can extend out of the bushing 73.

[0049] It should be noted that the lifting drive assembly 6 is not limited to the above-mentioned motor + gear and rack structure. For example, it can also be set as a motor + sprocket and chain structure, or a motor + lead screw transmission mechanism structure, etc. Such adjustments and changes to the specific structural form of the lifting drive assembly 6 do not deviate from the principles and scope of this application and should be limited to the protection scope of this application.

[0050] Furthermore, it should be noted that the support member 72 is not limited to the support rod mentioned above. For example, it can also be a support plate, etc. In addition, the abutment structure that cooperates with the support member 72 is not limited to the rack mentioned above. For example, it can also be an abutment block or abutment plate set on the cutting chamber protective cover 5, etc. Such flexible adjustments and changes do not deviate from the principles and scope of this application and should be limited to the protection scope of this application.

[0051] Preferably, such as Figure 2 and Figure 10 As shown, the wire cutting machine of this application also includes a cutting fluid spraying assembly 8 installed on the machine frame 1. The cutting fluid spraying assembly 8 includes an upper plate 81 and a lower plate 82 distributed vertically. The upper plate 81 is provided with a plurality of first through holes, and the lower plate 82 is provided with a plurality of second through holes. The first through holes and the second through holes are staggered.

[0052] By using a combination of upper plate 81 and lower plate 82, and by staggering the first through hole on upper plate 81 and the second through hole on lower plate 82, it is beneficial to improve the uniformity of cutting fluid spraying.

[0053] For example, a cutting fluid spraying assembly 8 is provided above each cutting station. The cutting fluid spraying assembly 8 also includes a spray box 83, an upper plate 81 and a lower plate 82 are fixedly connected and can be pulled out and installed in the spray box 83. The bottom of the spray box 83 is open. The supply pipe 84 extends into the spray box 83. The cutting fluid flowing out from the supply pipe 84 first falls onto the upper plate 81, then falls onto the lower plate 82 through the first through hole on the upper plate 81, and then falls down from the second through hole on the lower plate 82 and is sprayed onto the workpiece.

[0054] Preferably, such as Figure 10 As shown, the density of the first through holes on the upper plate 81 is greater than the density of the second through holes on the lower plate 82.

[0055] By making the density of the first through holes on the upper plate 81 greater than the density of the second through holes on the lower plate 82, it is beneficial to improve the uniformity of the cutting fluid spray. In addition, it is preferable to make the diameter of the first through holes smaller than the diameter of the second through holes to trap impurities in the cutting fluid on the upper plate 81.

[0056] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0057] Of course, the specific arrangement and composition of the wire cutting machine described above is only a preferred embodiment. Without departing from the principles of this application, those skilled in the art can adjust the composition and arrangement of the wire cutting machine described above.

[0058] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A wire cutting machine, characterized in that, It includes a machine frame (1) and a cutting device (2) and a feeding device (3) mounted on the machine frame (1). The cutting device (2) includes a main roller assembly, and a cutting wire is wound around the main roller assembly to form a cutting wire mesh (23). The main roller assembly includes an upper main roller (21) and a lower main roller (22) that are spaced apart vertically. The number of lower main rollers (22) is at least three and they are spaced apart along a first horizontal direction. The cutting wire mesh (23) between each two adjacent lower main rollers (22) forms a cutting station. The feeding device (3) is located below the lower main rollers (22) and is used to move the workpiece toward the cutting wire mesh (23).

2. The wire cutting machine according to claim 1, characterized in that, The main roller assembly also includes a mounting base (24), the upper main roller (21) is rotatably mounted on the mounting base (24), the machine frame (1) is provided with a first positioning structure, the mounting base (24) is provided with a second positioning structure, one of the first positioning structure and the second positioning structure is a vertically arranged positioning shaft (241), the other of the first positioning structure and the second positioning structure is a positioning hole adapted to the positioning shaft (241), the positioning shaft (241) is inserted into the positioning hole and can rotate relative to the positioning hole, and the mounting base (24) is fixedly connected to the machine frame (1) by a connecting assembly.

3. The wire cutting machine according to claim 2, characterized in that, The connecting assembly includes a plurality of elongated holes (242) disposed on the mounting base (24) and a plurality of connecting bolts disposed on the main frame (1), or includes a plurality of elongated holes disposed on the main frame (1) and a plurality of connecting bolts disposed on the mounting base (24), wherein the plurality of connecting bolts pass through the corresponding elongated holes (242) to fix the mounting base (24) to the main frame (1); and / or The second positioning structure is located directly below the upper main roller (21) and is positioned at the middle part of the length direction of the upper main roller (21).

4. The wire cutting machine according to claim 1, characterized in that, The feeding device (3) includes a vertical feeding assembly (31) and a horizontal feeding assembly (32) connected to the vertical feeding assembly (31), the horizontal feeding assembly (32) being connected to a workpiece stage (4) for fixing the workpiece.

5. The wire cutting machine according to claim 4, characterized in that, The vertical feed assembly (31) includes a vertical drive mechanism (311) and a lifting slide box (312) connected to the vertical drive mechanism (311), and the horizontal feed assembly (32) is fixedly installed on the top of the lifting slide box (312).

6. The wire cutting machine according to claim 1, characterized in that, The wire cutting machine also includes a cutting chamber protective cover (5), a lifting drive assembly (6), and a fall protection assembly (7) installed on the machine frame (1). The lifting drive assembly (6) is connected to the cutting chamber protective cover (5) and can drive the cutting chamber protective cover (5) to move up and down in the vertical direction. The fall protection assembly (7) is used to abut or insert with the cutting chamber protective cover (5) after the cutting chamber protective cover (5) is opened to prevent the cutting chamber protective cover (5) from falling.

7. The wire cutting machine according to claim 6, characterized in that, The fall protection assembly (7) includes a fall protection drive component (71) and a support component (72) connected to the fall protection drive component (71). The support component (72) is horizontally arranged. The cutting chamber protective cover (5) is provided with an abutment structure that cooperates with the support component (72). After the cutting chamber protective cover (5) is opened, the fall protection drive component (71) drives the support component (72) to extend so that the support component (72) is supported under the abutment structure.

8. The wire cutting machine according to claim 1, characterized in that, The wire cutting machine also includes a cutting fluid spraying assembly (8) installed on the machine frame (1). The cutting fluid spraying assembly (8) includes an upper plate (81) and a lower plate (82) distributed vertically. The upper plate (81) is provided with a plurality of first through holes, and the lower plate (82) is provided with a plurality of second through holes. The first through holes and the second through holes are offset from each other.

9. The wire cutting machine according to claim 8, characterized in that, The density of the first through hole is greater than the density of the second through hole.

10. The wire cutting machine according to any one of claims 1 to 9, characterized in that, The number of upper main rollers (21) is one, and the number of lower main rollers (22) is three. The upper main roller (21) is located directly above the middle lower main roller (22) among the three lower main rollers (22).

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