Downward pressing mechanism of numerical control linear cutting machine tool

Abstract

The invention provides a downward pressing mechanism of a numerical control linear cutting machine tool, and belongs to the technical field of cutting machine tools, the downward pressing mechanism comprises a main body and further comprises a downward pressing assembly arranged at the top end of the main body, the downward pressing assembly comprises an adjusting plate arranged at the top end of the main body, and an adjusting mechanism is arranged in the bottom end of the adjusting plate; the adjusting mechanism comprises balls in rolling connection with the interior of the bottom end of the adjusting plate, and racks in sliding connection with the outer surfaces of the balls in the bottom end of the adjusting plate; according to the pressing mechanism of the numerical control linear cutting machine tool, the angle of the electrode wire is adjusted, the cutting flexibility and adaptability are remarkably improved, in addition, in the process that the electrode wire is pressed downwards to adjust the tension degree of the electrode wire, one contact block is driven so that a workbench and a workpiece can automatically adapt to the cutting angle of the electrode wire, and the cutting efficiency is improved. And the cutting process is always in the optimal state. The cutting precision and quality are improved, cutting errors caused by angle mismatching are reduced, and powerful guarantee is provided for high-precision machining.

Description

Technical Field

[0001] The invention belongs to the technical field of cutting machine tools, and in particular relates to a pressing mechanism of a numerically controlled wire cutting machine tool. Background Art

[0002] The downward pressure mechanism of a CNC wire-cutting machine tool plays a vital role in the operation of the machine tool; it is a key component used to adjust the position and tension of the electrode wire and achieve multi-directional adjustment; during the cutting process, precise adjustment of the electrode wire position can ensure that it maintains an appropriate relative distance from the workpiece, which directly affects the cutting accuracy; reasonable control of the tension can prevent the electrode wire from being loose or too tight, ensuring cutting stability.

[0003] A search of patent document CN115635152A discloses a high-precision CNC wire cutting machine tool, including a frame, a protective frame fixedly installed on the top of the frame, a mounting seat movably installed on the rear end of the protective frame, a liquid supply system fixedly installed on the top of the mounting seat, and a mounting frame fixedly installed on the bottom end of the liquid supply system; the present invention realizes the position change of two limit plates by changing the position of the piston plate, thereby adjusting the verticality of the molybdenum wire, so that the verticality of the molybdenum wire can be adjusted by simply opening the valve of the liquid inlet valve before online processing operation, and at the same time, utilizing the symmetrically designed laser rangefinder and the principle of equal distance between the laser rangefinder and the molybdenum wire, and utilizing the difference change between the two to realize verticality monitoring, thereby avoiding the problem that traditional devices require a long time to adjust the verticality before processing and lack verticality monitoring, effectively reducing the preparation time during work, and having a certain early warning capability.

[0004] Although the above patent document uses the difference change between the two to realize verticality monitoring, avoiding the problem that traditional devices need to spend a long time to adjust the verticality before processing and lack verticality monitoring; the main function of the pressing mechanism of the existing device is to adjust the tension of the electrode wire, and its movement mode is extremely single; when faced with workpieces with complex contours or special angle requirements, the traditional pressing mechanism cannot meet the processing requirements at all; for example, when processing some workpieces with special-shaped curved surfaces or inclined angles, since the pressing mechanism cannot flexibly adjust the angle of the electrode wire, the electrode wire cannot maintain the best contact state with the cutting surface of the workpiece, which greatly limits the flexibility and adaptability of cutting. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a pressing mechanism for a CNC wire cutting machine tool, which effectively solves the problem that the main function of the pressing mechanism in the prior art is to adjust the tension of the electrode wire, and its movement mode is extremely single; when faced with workpieces with complex contours or special angle requirements, the traditional pressing mechanism cannot meet the processing requirements at all; for example, when processing some workpieces with special-shaped curved surfaces or inclined angles, since the pressing mechanism cannot flexibly adjust the angle of the electrode wire, the electrode wire cannot maintain the optimal contact state with the cutting surface of the workpiece, which greatly limits the flexibility and adaptability of cutting.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a pressing mechanism of a CNC wire cutting machine tool, comprising a main body and a pressing assembly, which is arranged at the top of the main body, the pressing assembly comprising an adjusting plate arranged at the top of the main body, an adjusting mechanism being arranged inside the bottom end of the adjusting plate, the adjusting mechanism comprising a ball rollingly connected to the inside of the bottom end of the adjusting plate, a rack slidingly connected to the outer surface of the ball inside the bottom end of the adjusting plate, and the number of racks is four, and four support blocks are arranged around the ball, the adjusting plate and the rack are elastically connected by an elastic member, four motors are fixedly installed inside the adjusting plate, gears meshing with four racks are fixedly installed at the output ends of the four motors, and four plug-in assemblies are arranged at the bottom ends of the four racks.

[0007] As a further improvement scheme of the pressing mechanism of a CNC wire cutting machine tool of the present invention, the internal sliding connection of the adjustment plate is connected to a support column located at the top of the main body, the internal rotation connection of the support column is connected to a threaded rod, and the threaded rod is threadedly connected to the adjustment plate.

[0008] As a further improvement scheme of the downward pressing mechanism of a CNC wire cutting machine tool of the present invention, the plug-in assembly includes a support block fixedly connected to the bottom end of the rack, the surface of the support block is slidably connected to the plug-in block, the inside of the rack is fixedly installed with a cylinder 1, and the output shaft of the cylinder 1 is fixedly connected to the plug-in block.

[0009] As a further improvement scheme of the downward pressure mechanism of a CNC wire cutting machine tool of the present invention, it also includes: a rotating mechanism, which is arranged at the top of the main body, the rotating mechanism includes a support plate arranged at the top of the main body, the bottom end of the support plate is fixedly installed with a mounting block, the top of the mounting block is hinged with a hinge rod, the top of the support plate is provided with a workbench, the bottom end of the workbench is fixedly installed with a U-shaped block located on the surface of the hinge rod; a driving component, which is arranged at the top of the support plate and can drive the workbench to rotate; a limiting component, which is arranged at the bottom end of the workbench.

[0010] As a further improvement scheme of the downward pressing mechanism of a CNC wire cutting machine tool of the present invention, the driving assembly includes a pneumatic push rod fixedly connected to the bottom end of the support plate, the number of the pneumatic push rods is four, a gas cylinder is provided on one side of the pneumatic push rod, and the gas cylinder is connected to the main body, the output shaft of the pneumatic push rod is fixedly installed with a contact block, the pneumatic push rod is connected to the gas cylinder through a connecting pipe, and the surfaces of the four connecting pipes are provided with solenoid valves, the top end of the gas cylinder is slidably connected to an extrusion rod, and the extrusion rod is connected to the bottom end of the adjustment plate.

[0011] As a further improvement scheme of the downward pressing mechanism of a CNC wire cutting machine tool of the present invention, the limiting assembly includes a cylinder 2 fixedly connected to the bottom end of the workbench, and the output end of the cylinder 2 is fixedly installed with a limiting block located inside the U-shaped block.

[0012] As a further improvement scheme of the downward pressing mechanism of a CNC wire cutting machine tool of the present invention, it also includes: a support component, which is arranged at the bottom end inside the support plate, and the support component includes a square tube fixedly connected to the bottom end inside the support plate, and a slider is slidably connected to the inside of the square tube, and the slider is elastically connected to the square tube through an elastic member. An extrusion block is provided at the top of the slider, and the extrusion block is connected to the bottom end of the U-shaped block.

[0013] As a further improvement scheme of the pressing mechanism of a CNC wire cutting machine tool of the present invention, a protective frame is fixedly installed inside the bottom end of the ball, and the electrode wire is located inside the protective frame, and the surface of the protective frame is designed to be smooth.

[0014] As a further improvement scheme of the pressing mechanism of a CNC wire cutting machine tool of the present invention, the support block is T-shaped, and the surface of the support block is in contact with the inner wall of the insert block, and the side of the insert block close to the ball surface is chamfered.

[0015] The present invention also provides a method for using the pressing mechanism of a CNC wire cutting machine tool, the method comprising the following steps:

[0016] S1: The operator fixes the workpiece to be cut on the top of the workbench. When the angle of the electrode wire needs to be adjusted for cutting, the operator drives three of the cylinders, causing their output shafts to pull the insert away from the inside of the ball bearings. The operator also drives the corresponding motors to rotate the gears, which in turn drive the rack and ball bearings to move. The rack pulls the ball bearings to roll inside the adjustment plate, and the rolling motion of the ball bearings achieves the angle deflection of the electrode wire.

[0017] S2, when the adjustment mechanism adjusts the angle of the electrode wire, the sensor of the device will capture the inclination angle of the electrode wire and immediately send an electrical signal to the control system. The solenoid valves on the surface of the three connecting pipes will be closed, and the threaded rod will be rotated. The adjustment plate will move on the surface of the threaded rod. Through the movement of the adjustment plate, the electrode wire can be pressed against the surface of the workpiece to ensure that it is in a predetermined tension state;

[0018] S3, when adjusting the tension of the electrode wire, the adjustment plate will move downward and push the extrusion rod to move inside the gas cylinder. During the movement, the air inside the gas cylinder will be squeezed, and the air will enter the connecting tube and the pneumatic push rod that match the inclination angle of the electrode wire. The output shaft of the pneumatic push rod will push the contact block to contact the surface of the workbench, thereby pushing the workbench and the workpiece to rotate to a position that matches the inclination angle of the electrode wire.

[0019] S4, when the driving component pushes the workbench to rotate longitudinally, the limit component is driven away from the surface of the hinged rod, and then when the workbench rotates longitudinally, the U-shaped block will slide inside the hinged rod and will not get stuck. When the workbench rotates horizontally, the limit component is driven again to make it contact with the hinged rod, so that the U-shaped block and the workbench can rotate with the hinged rod as the center, ensuring the stability of the rotation, and then drive the electrode wire to discharge evenly, thereby cutting the workpiece.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) The present invention provides a downward pressure mechanism for a CNC wire cutting machine tool that significantly improves the flexibility and adaptability of cutting by adjusting the angle of the electrode wire. In addition, during the process of adjusting the tension of the electrode wire by pressing down on the electrode wire, one of the contact blocks is driven to automatically adapt the workbench and workpiece to the cutting angle of the electrode wire, ensuring that the cutting process is always in the optimal state. This improves the accuracy and quality of cutting, reduces cutting errors caused by angle mismatch, and provides a strong guarantee for high-precision processing.

[0022] (2) The present invention achieves significant improvement in the flexibility and adaptability of the cutting operation by the coordinated cooperation between the adjustment mechanism and the plug-in assembly, i.e., the plug-in assembly is used to precisely limit the ball bearing, while the adjustment mechanism is used to flexibly adjust the cutting angle of the electrode wire. Specifically, the three cylinders are driven to cause their output shafts to pull the plug block away from the interior of the ball bearing at the same time, and the corresponding motors are driven to rotate the gears, which in turn drive the rack and the ball bearing to move, and the rack bearing pulls the ball bearing to roll inside the adjustment plate. The rolling motion of the ball bearing allows the angle of the electrode wire to be deflected, which not only solves the problem of adjusting the angle of the electrode wire, but also significantly improves the flexibility and adaptability of the cutting operation.

[0023] (3) The present invention achieves a greatly improved cutting accuracy and quality through the coordinated cooperation between the rotating mechanism and the driving assembly, that is, the driving assembly can not only drive the rotating mechanism to rotate stably, but also cleverly use the rotating mechanism to drive the workpiece to move accurately to a position that matches the tilt angle of the tilted electrode wire, specifically, when adjusting the tension of the electrode wire, the adjustment plate will move downward and push the extrusion rod to move inside the gas cylinder, and when moving, it will squeeze the air inside the gas cylinder, and the air will enter the connecting tube and the pneumatic push rod that match the tilt angle of the electrode wire, and its output shaft will push the contact block to contact the surface of the workbench, thereby pushing the workbench and the workpiece to rotate to a position that matches the tilt angle of the electrode wire, thereby improving the cutting accuracy and quality, reducing the cutting error caused by angle mismatch, and providing a strong guarantee for high-precision processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a schematic diagram of the pressing assembly of the present invention;

[0026] Figure 3 This invention Figure 2 A is an enlarged schematic diagram;

[0027] Figure 4 is a schematic diagram of the adjustment mechanism of the present invention;

[0028] Figure 5 is a schematic diagram of the plug assembly of the present invention;

[0029] Figure 6 is a schematic diagram of the limit assembly of the present invention;

[0030] Figure 7 is a schematic diagram of the rotation mechanism of the present invention;

[0031] Figure 8 This invention Figure 7 A magnified schematic diagram of point B in FIG.

[0032] Figure 9 Schematic diagram of the drive assembly of the present invention.

[0033] In the figure: 100, main body; 200, pressing assembly; 201, supporting column; 202, threaded rod; 203, adjusting plate; 300, adjusting mechanism; 301, ball bearing; 302, rack; 303, elastic member 1; 304, motor 1; 305, gear; 400, plug-in assembly; 401, cylinder 1; 402, supporting block; 403, plug-in block; 500, rotating mechanism; 501, supporting plate; 502, mounting block; 503, articulated rod; 504, workbench; 505, U-shaped block; 600, drive assembly; 601, gas cylinder; 602, pneumatic push rod; 603, contact block; 604, connecting pipe; 605, extrusion rod; 700, support assembly; 701, square cylinder; 702, slider; 703, elastic part 2; 704, extrusion block; 800, limit assembly; 801, gas cylinder 2; 802, limit block; 900, protective frame. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] It should be pointed out that the terms "upper", "lower", "left", "right", "top", "bottom", "inside", "outside" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0036] It should be understood that, in the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense.

[0037] Example 1: See attached Figures 1 to 9, the present embodiment 1 provides a pressing mechanism of a CNC wire cutting machine tool, including a main body 100, and also includes a pressing component 200, which is arranged at the top of the main body 100, the pressing component 200 includes an adjusting plate 203 arranged at the top of the main body 100, and an adjusting mechanism 300 is arranged inside the bottom end of the adjusting plate 203, the adjusting mechanism 300 includes a ball 301 rollingly connected to the inside of the bottom end of the adjusting plate 203, and a rack 302 slidingly connected to the outer surface of the ball 301 inside the bottom end of the adjusting plate 203, and the number of the racks 302 is four, and four support blocks 402 are arranged around the ball 301, the adjusting plate 203 and the rack 302 are elastically connected by an elastic member 303, four motors 304 are fixedly installed inside the adjusting plate 203, and the output ends of the four motors 304 are fixedly installed with gears 305 meshing with the four racks 302, and four plug-in components 400 are arranged at the bottom ends of the four racks 302.

[0038] It is not difficult to understand that: when the operator needs to adjust the angle of the electrode wire for cutting, he can drive three of the plug-in components 400 away from the inside of the ball 301, and then drive the corresponding motor 304 to rotate the gear 305. Because the gear 305 is engaged with the rack 302, the rotating gear 305 will drive the rack 302 and the ball 301 to move, and the elastic member 303 will be compressed. While limiting the rack 302, the smoothness of the angle adjustment is ensured. A plug-in component 400 is also provided inside the ball 301, and the rack 302 will pull the plug-in component 400 and the ball 301 to roll inside the adjustment plate 203. The angle deflection of the electrode wire is achieved through the rolling motion of the ball 301, which improves the efficiency and yield of complex curved surface processing. When the device performs straight cutting, the four plug-in components 400 will be located inside the ball 301, thereby limiting the ball 301.

[0039] like Figure 2 As shown, the interior of the adjustment plate 203 is slidably connected to the support column 201 located at the top of the main body 100 , the interior of the support column 201 is rotatably connected to the threaded rod 202 , and the threaded rod 202 is threadedly connected to the adjustment plate 203 .

[0040] It is not difficult to understand that: through the design of the pressing component 200, after the workpiece is fixed, the threaded rod 202 can be rotated. Since the threaded rod 202 is threadedly connected to the adjustment plate 203, when the threaded rod 202 rotates, the adjustment plate 203 will move on the surface of the threaded rod 202. Through the movement of the adjustment plate 203, the electrode wire can be pressed to the surface of the workpiece to ensure that it is in a predetermined tension state, thereby avoiding the deviation of the cutting trajectory due to the relaxation of the electrode wire.

[0041] like Figure 4 and Figure 5As shown, the plug-in assembly 400 includes a support block 402 fixedly connected to the bottom end of the rack 302, an insert block 403 is slidably connected to the surface of the support block 402, a cylinder 401 is fixedly installed inside the rack 302, and the output shaft of the cylinder 401 is fixedly connected to the insert block 403.

[0042] It is not difficult to understand that: through the design of the plug-in assembly 400, when the electrode wire angle needs to be adjusted, three of the cylinders 401 can be driven so that their output shafts push the plug 403 to slide on the surface of the support block 402, and the three plugs 403 will simultaneously move away from the interior of the ball 301, while another plug 403 is located inside the ball 301, and then the corresponding motor 304 can be driven to make the gear 305 drive the ball 301 to roll inside the adjustment plate 203.

[0043] like Figure 6 and Figure 7 As shown, it also includes:

[0044] The rotating mechanism 500 is disposed at the top of the main body 100. The rotating mechanism 500 includes a support plate 501 disposed at the top of the main body 100. A mounting block 502 is fixedly mounted at the bottom end of the support plate 501. A hinge rod 503 is hingedly connected to the top of the mounting block 502. A workbench 504 is disposed at the top of the support plate 501. A U-shaped block 505 located on the surface of the hinge rod 503 is fixedly mounted at the bottom end of the workbench 504.

[0045] A driving assembly 600 is disposed at the top of the support plate 501 and is capable of driving the workbench 504 to rotate;

[0046] The limiting assembly 800 is disposed at the bottom end of the workbench 504 .

[0047] It should be noted that: through the design of the rotating mechanism 500, the workpiece to be cut can be fixed on the top of the workbench 504, and the workbench 504 is a prior art and will not be described in detail. Then, when the adjusting mechanism 300 adjusts the angle of the electrode wire, the sensor of the device will capture the inclination angle of the electrode wire and immediately send an electrical signal to the control system to turn off three of the drive components 600. Then, when adjusting the tension of the electrode wire, the moving adjustment plate 203 will drive the remaining drive component 600, and the drive component 600 will push the workbench 504 to Figure 7Rotate in the direction of the arrow, the workbench 504 and the workpiece will rotate to a cutting angle that matches the electrode wire, ensuring that the cutting process is always in the best state. When the driving component 600 pushes the workbench 504 to rotate longitudinally, the limiting component 800 can be driven away from the surface of the hinged rod 503, and then when the workbench 504 rotates longitudinally, the U-shaped block 505 will slide inside the hinged rod 503 and will not get stuck. When the workbench 504 rotates horizontally, the limiting component 800 is driven again to make it contact with the hinged rod 503, so that the U-shaped block 505 and the workbench 504 can rotate with the hinged rod 503 as the center, ensuring the stability of the rotation.

[0048] like Figure 7 and Figure 9 As shown, the drive assembly 600 includes a pneumatic push rod 602 fixedly connected to the bottom end of the support plate 501. There are four pneumatic push rods 602. A gas cylinder 601 is provided on one side of the pneumatic push rod 602, and the gas cylinder 601 is connected to the main body 100. The output shaft of the pneumatic push rod 602 is fixedly installed with a contact block 603. The pneumatic push rod 602 is connected to the gas cylinder 601 through a connecting pipe 604, and the surfaces of the four connecting pipes 604 are provided with solenoid valves. The top end of the gas cylinder 601 is slidably connected to an extrusion rod 605, and the extrusion rod 605 is connected to the bottom end of the adjustment plate 203.

[0049] It should be noted that: through the design of the drive component 600, when the adjustment mechanism 300 adjusts the angle of the electrode wire, the sensor of the device will capture the inclination angle of the electrode wire and will immediately send an electrical signal to the control system. The solenoid valves on the surfaces of the three connecting tubes 604 will be closed. Then, when adjusting the tension of the electrode wire, the adjustment plate 203 will move downward and push the extrusion rod 605 to move inside the gas cylinder 601. When moving, the air inside the gas cylinder 601 will be squeezed, and the air will enter the connecting tube 604 and the pneumatic push rod 602 that match the angle of the electrode wire. The output shaft will push the contact block 603 to contact the surface of the workbench 504, thereby pushing the workbench 504 and the workpiece to rotate to a position that matches the inclination angle of the electrode wire, thereby improving the cutting accuracy and quality.

[0050] like Figure 6 and Figure 8 As shown, the limiting assembly 800 includes a second cylinder 801 fixedly connected to the bottom end of the workbench 504 , and a limiting block 802 located inside the U-shaped block 505 is fixedly installed at the output end of the second cylinder 801 .

[0051] It should be noted that: through the design of the limit assembly 800, when the pneumatic push rod 602 needs to push the workbench 504 to rotate longitudinally, the cylinder 2 801 can be driven so that its output shaft pulls the limit block 802 away from the surface of the hinged rod 503, and then when the workbench 504 rotates longitudinally, the U-shaped block 505 will slide on the surface of the hinged rod 503 and will not get stuck. When the workbench 504 rotates horizontally, the cylinder 2 801 can be driven again so that its output shaft pushes the limit block 802 to contact the surface of the hinged rod 503, thereby enabling the workbench 504 and the hinged rod 503 to rotate in a circle.

[0052] like Figure 2 、 Figure 6 and Figure 7 As shown, it also includes: a support assembly 700, which is arranged at the bottom end inside the support plate 501, and the support assembly 700 includes a square tube 701 fixedly connected to the bottom end inside the support plate 501, and a slider 702 is slidably connected to the inside of the square tube 701. The slider 702 is elastically connected to the square tube 701 through an elastic member 703. An extrusion block 704 is provided at the top of the slider 702, and the extrusion block 704 is connected to the bottom end of the U-shaped block 505.

[0053] It is not difficult to understand that: through the design of the support assembly 700, when the workbench 504 and the U-shaped block 505 rotate longitudinally, the extrusion block 704 will be driven to contact the surface of the slider 702, and the slider 702 will be squeezed to move. The slider 702 will shrink into the inside of the square tube 701 and will squeeze the elastic member 2 703. When the workbench 504 is reset, the compressed elastic member 2 703 will push the extrusion block 704, the U-shaped block 505 and the workbench 504 to reset, and can support the workbench 504 and the U-shaped block 505.

[0054] like Figure 5 As shown, a protective frame 900 is fixedly installed inside the bottom end of the ball 301, and the electrode wire is located inside the protective frame 900, and the surface of the protective frame 900 is designed to be smooth.

[0055] It is not difficult to understand that: through the design of the protective frame 900, when the ball 301 adjusts the angle of the electrode wire, the electrode wire will contact the surface of the protective frame 900. Since the surface of the protective frame 900 is designed to be smooth, it can protect the electrode wire and extend the service life of the electrode wire.

[0056] like Figure 5 As shown, the support block 402 is T-shaped, and the surface of the support block 402 fits the inner wall of the insert block 403 , and the side of the insert block 403 close to the surface of the ball 301 is chamfered.

[0057] It is not difficult to understand that: through the design of the support block 402 and the insert block 403, since the support block 402 is a T-shaped design, it can support and limit the insert block 403, ensuring the stability of the movement of the insert block 403, and the side of the insert block 403 close to the surface of the ball 301 is chamfered, which makes it easier for the insert block 403 to enter the interior of the ball 301.

[0058] The present invention also provides a method for using the pressing mechanism of a CNC wire cutting machine tool, the method comprising the following steps:

[0059] S1: The operator fixes the workpiece to be cut on the top of the workbench 504. When the angle of the electrode wire needs to be adjusted for cutting, the operator drives one of the three air cylinders 401 so that its output shaft pulls the plug 403 away from the inside of the ball 301. The operator drives the corresponding motor 304 to rotate the gear 305. The gear 305 drives the rack 302 and the ball 301 to move. The rack 302 pulls the ball 301 to roll inside the adjustment plate 203. The rolling motion of the ball 301 realizes the angle deflection of the electrode wire.

[0060] S2, when the adjustment mechanism 300 adjusts the angle of the electrode wire, the sensor of the device will detect the inclination angle of the electrode wire and immediately send an electrical signal to the control system. The solenoid valves on the surface of the three connecting pipes 604 will be closed, and the threaded rod 202 will be rotated. The adjustment plate 203 will move on the surface of the threaded rod 202. Through the movement of the adjustment plate 203, the electrode wire can be pressed against the surface of the workpiece to ensure that it is in a predetermined tension state;

[0061] S3, when adjusting the tension of the electrode wire, the adjustment plate 203 moves downward and pushes the extrusion rod 605 to move inside the gas cylinder 601. During the movement, the air inside the gas cylinder 601 is squeezed, and the air enters the connecting tube 604 and the pneumatic push rod 602 that match the inclination angle of the electrode wire. The output shaft of the pneumatic push rod 602 pushes the contact block 603 to contact the surface of the workbench 504, thereby pushing the workbench 504 and the workpiece to rotate to a position that matches the inclination angle of the electrode wire.

[0062] S4. When the driving component 600 pushes the workbench 504 to rotate longitudinally, the limiting component 800 is driven away from the surface of the hinged rod 503. Then, when the workbench 504 rotates longitudinally, the U-shaped block 505 will slide inside the hinged rod 503 and will not get stuck. When the workbench 504 rotates horizontally, the limiting component 800 is driven again to make it contact with the hinged rod 503. Then, the U-shaped block 505 and the workbench 504 can rotate with the hinged rod 503 as the center, ensuring the stability of the rotation. Then, the electrode wire is driven to discharge evenly, thereby cutting the workpiece.

[0063] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A pressing mechanism for a CNC wire cutting machine tool, comprising a main body (100), characterized in that: The invention also includes a pressing component (200) which is arranged at the top of the main body (100), the pressing component (200) includes an adjusting plate (203) arranged at the top of the main body (100), an adjusting mechanism (300) is arranged inside the bottom of the adjusting plate (203), and the adjusting mechanism (300) includes a ball (301) rollingly connected to the bottom of the adjusting plate (203), a rack (302) slidingly connected to the outer surface of the ball (301) inside the bottom of the adjusting plate (203), and the rack (302) is connected to the outer surface of the ball (301) in a sliding manner. The number of the racks (302) is four, and four support blocks (402) are arranged around the ball (301). The adjustment plate (203) is elastically connected to the rack (302) through an elastic member (303). Four motors (304) are fixedly installed inside the adjustment plate (203). The output ends of the four motors (304) are fixedly installed with gears (305) meshing with the four racks (302). Four plug-in components (400) are arranged at the bottom ends of the four racks (302).

2. The pressing mechanism of the CNC wire cutting machine tool according to claim 1, characterized in that: The interior of the adjustment plate (203) is slidably connected to a support column (201) located at the top of the main body (100), the interior of the support column (201) is rotatably connected to a threaded rod (202), and the threaded rod (202) is threadedly connected to the adjustment plate (203).

3. The pressing mechanism of the CNC wire cutting machine tool according to claim 1, characterized in that: The plug-in assembly (400) includes a support block (402) fixedly connected to the bottom end of the rack (302), an insert block (403) is slidably connected to the surface of the support block (402), a cylinder 1 (401) is fixedly installed inside the rack (302), and the output shaft of the cylinder 1 (401) is fixedly connected to the insert block (403).

4. The pressing mechanism of the CNC wire cutting machine tool according to claim 1, characterized in that: Also includes: A rotating mechanism (500) is provided at the top of the main body (100), the rotating mechanism (500) comprising a support plate (501) provided at the top of the main body (100), a mounting block (502) fixedly mounted at the bottom end of the interior of the support plate (501), a hinge rod (503) hingedly connected to the interior of the top end of the mounting block (502), a workbench (504) provided at the top end of the support plate (501), a U-shaped block (505) located on the surface of the hinge rod (503) fixedly mounted at the bottom end of the workbench (504); A driving assembly (600) is disposed at the top end of the support plate (501) and is capable of driving the workbench (504) to rotate; The limiting assembly (800) is arranged at the bottom end of the workbench (504).

5. The pressing mechanism of the CNC wire cutting machine tool according to claim 4, characterized in that: The driving assembly (600) includes a pneumatic push rod (602) fixedly connected to the bottom end of the support plate (501), and the number of the pneumatic push rods (602) is four. A gas cylinder (601) is provided on one side of the pneumatic push rod (602), and the gas cylinder (601) is connected to the main body (100). A contact block (603) is fixedly installed on the output shaft of the pneumatic push rod (602). The pneumatic push rod (602) is connected to the gas cylinder (601) through a connecting pipe (604), and electromagnetic valves are provided on the surfaces of the four connecting pipes (604). The top end of the gas cylinder (601) is slidably connected to an extrusion rod (605), and the extrusion rod (605) is connected to the bottom end of the adjustment plate (203).

6. The pressing mechanism of the CNC wire cutting machine tool according to claim 4, characterized in that: The limiting assembly (800) includes a second cylinder (801) fixedly connected to the bottom end of the workbench (504), and a limiting block (802) located inside the U-shaped block (505) is fixedly installed at the output end of the second cylinder (801).

7. The pressing mechanism of the CNC wire cutting machine tool according to claim 4, characterized in that: Also includes: A support assembly (700) is arranged at the bottom end inside the support plate (501), and the support assembly (700) includes a square tube (701) fixedly connected to the bottom end inside the support plate (501). A slider (702) is slidably connected inside the square tube (701). The slider (702) is elastically connected to the square tube (701) through a second elastic member (703). An extrusion block (704) is provided at the top end of the slider (702), and the extrusion block (704) is connected to the bottom end of the U-shaped block (505).

8. The pressing mechanism of the CNC wire cutting machine tool according to claim 1, characterized in that: A protective frame (900) is fixedly installed inside the bottom end of the ball (301), and the electrode wire is located inside the protective frame (900). The surface of the protective frame (900) is designed to be smooth.

9. The pressing mechanism of the CNC wire cutting machine tool according to claim 2, characterized in that: The support block (402) is of T-shaped design, and the surface of the support block (402) is in contact with the inner wall of the insert block (403). The side of the insert block (403) close to the surface of the ball (301) is of chamfered design.

10. The method for using the pressing mechanism of a CNC wire cutting machine tool according to any one of claims 1 to 9, characterized in that: The method of use comprises the following steps: S1, the operator fixes the workpiece to be cut on the top of the workbench (504), and when it is necessary to adjust the angle of the electrode wire for cutting, drives one of the three cylinders (401) so that its output shaft pulls the plug (403) away from the inside of the ball (301) at the same time, drives the corresponding motor (304) to rotate the gear (305), the gear (305) drives the rack (302) and the ball (301) to move, the rack (302) pulls the ball (301) to roll inside the adjustment plate (203), and the angle deflection of the electrode wire is achieved through the rolling movement of the ball (301); S2, when the adjusting mechanism (300) adjusts the angle of the electrode wire, the sensor of the device will capture the inclination angle of the electrode wire and immediately send an electrical signal to the control system, the solenoid valves on the surface of the three connecting pipes (604) will be closed, the threaded rod (202) will be rotated, and the adjusting plate (203) will move on the surface of the threaded rod (202). Through the movement of the adjusting plate (203), the electrode wire can be pressed against the surface of the workpiece to ensure that it is in a predetermined tension state; S3, when adjusting the tension of the electrode wire, the adjustment plate (203) moves downward and pushes the extrusion rod (605) to move inside the gas cylinder (601). When moving, the air inside the gas cylinder (601) is squeezed, and the air enters the connecting tube (604) and the pneumatic push rod (602) that match the inclination angle of the electrode wire. The output shaft thereof pushes the contact block (603) to contact the surface of the workbench (504), thereby pushing the workbench (504) and the workpiece to rotate to a position that matches the inclination angle of the electrode wire; S4, when the driving component (600) pushes the workbench (504) to rotate longitudinally, the limiting component (800) is driven away from the surface of the hinged rod (503), and then when the workbench (504) rotates longitudinally, the U-shaped block (505) slides inside the hinged rod (503) and will not get stuck. When the workbench (504) rotates horizontally, the limiting component (800) is driven again to make it contact with the hinged rod (503), so that the U-shaped block (505) and the workbench (504) can rotate with the hinged rod (503) as the center, ensuring the stability of the rotation, and then driving the electrode wire to discharge evenly, thereby cutting the workpiece.

Images