A trapezoidal screw rod transmission structure of a spark machine liquid tank door ladder

Abstract

This utility model discloses a trapezoidal screw drive structure for a liquid tank door of an EDM machine. Two mounting plates are symmetrically arranged on both sides of the open end of the liquid tank frame. Baffles are provided at both ends of the open end of the liquid tank frame. A guide rail and mounting base are provided at the outer end of the mounting plates. A right-angle reducer is provided on the lower surface of the mounting base, and a servo motor is provided at the input end of the right-angle reducer. The bottom of the trapezoidal screw is connected to the output shaft of the right-angle reducer via a coupling. One side of the nut seat is slidably engaged with the guide rail via a slider fixing plate. The nut seat engages with the trapezoidal screw via a screw-nut pair. The outer side of the nut seat is tenoned to the protrusions of the liquid tank pull blocks at both ends of the liquid tank door via a slot. A roller is provided on one side of the liquid tank door via an axle. The roller is supported on the side wall of the liquid tank frame and limited by a baffle. This utility model has a reasonable structure, offering greater stability and higher precision compared to a cylinder structure. Furthermore, the support of the liquid tank door to the side wall of the liquid tank frame via rollers further improves the stability of the liquid tank door during lifting and lowering.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and more particularly to electrical discharge machine tools, specifically a trapezoidal lead screw transmission structure for the liquid tank door of an electrical discharge machine. Background Technology

[0002] An electrical discharge machining (EDM) machine is a type of machining equipment widely used in the manufacture of various metal molds and mechanical equipment. The EDM machine utilizes the electro-erosion effect generated by pulsed discharge between two electrodes immersed in a working fluid to remove conductive materials.

[0003] The EDM machine includes a liquid tank to hold the working fluid. The liquid tank has a door for adding or releasing the working fluid. In existing technology, the raising and lowering of the liquid tank is controlled by a cylinder. However, cylinder control suffers from poor stability and low precision. Therefore, an improved technology is urgently needed to solve the aforementioned problems in the existing technology. Utility Model Content

[0004] The purpose of this invention is to provide a trapezoidal lead screw transmission structure for the EDM liquid tank door, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a trapezoidal screw drive structure for a liquid tank door of an EDM machine, comprising a liquid tank frame, a mounting plate, a servo motor, a trapezoidal screw, a guide rail, a nut seat, a liquid tank pull block, a liquid tank door, and rollers. The upper part of the front side of the liquid tank frame is open. Two mounting plates are symmetrically arranged on both sides of the open side of the liquid tank frame. Baffles are provided at both ends of the open side of the liquid tank frame. A guide rail and a mounting base are provided at the outer end of the mounting plate. A right-angle reducer is provided on the lower surface of the mounting base. A servo motor is provided at the input end of the right-angle reducer. The output shaft of the motor is connected to the input shaft of the right-angle reducer. The bottom of the trapezoidal lead screw is connected to the output shaft of the right-angle reducer through a coupling. A slider fixing plate is provided on one side of the nut seat. The slider fixing plate is slidably engaged with the guide rail through the slider. The nut seat is engaged with the trapezoidal lead screw through a lead screw and nut pair. A slot is opened in the middle of the outer side of the nut seat. Liquid tank pull blocks are provided at both ends of the liquid tank door. The liquid tank pull blocks are provided with protrusions. The protrusions are tenoned with the slot of the nut seat. A roller is provided on one side of the liquid tank door through a wheel axle. The roller is supported on the side wall of the liquid tank frame and limited by a baffle.

[0006] Preferably, the present invention provides a trapezoidal lead screw transmission structure for a discharge machine liquid tank door, wherein lead screw seats are provided above both sides of the mounting plate, and the top of the trapezoidal lead screw cooperates with the lead screw seats.

[0007] Preferably, the present invention provides a trapezoidal lead screw transmission structure for the liquid tank door of an EDM machine, wherein limit switches are respectively provided at the upper and lower ends of both sides of the mounting plate, and a limit stop block is provided on the nut seat, the limit stop block cooperating with the limit switch.

[0008] Preferably, the present invention provides a trapezoidal lead screw transmission structure for a spark gap liquid tank, wherein a deep groove ball bearing is provided in the mounting base, the bottom of the trapezoidal lead screw has a smooth surface and cooperates with the deep groove ball bearing, and a pressure cap is provided on the upper surface of the mounting base, the pressure cap pressing against the upper surface of the deep groove ball bearing.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] (1) Power is provided by a servo motor and transmission is carried out by a trapezoidal screw. The liquid tank door is guided and lifted along the trapezoidal screw to realize the opening and closing movement of the liquid tank door. Compared with the cylinder structure, it is more stable and more accurate. Furthermore, the liquid tank door is supported by rollers on the side wall of the liquid tank frame, which further improves the stability of the liquid tank door when lifting and lowering.

[0011] (2) The liquid tank pull block is provided with a protrusion, which is tenoned with the groove of the nut seat to avoid the liquid tank door from having excessive friction with the liquid tank frame when it is raised and lowered due to the tight connection, which would reduce its service life. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 For the appendix Figure 1 A side view of the structure at point A in the middle.

[0014] In the diagram: 1. Liquid tank frame; 2. Mounting plate; 3. Servo motor; 4. Trapezoidal lead screw; 5. Guide rail; 6. Nut seat; 7. Liquid tank pull block; 8. Liquid tank door; 9. Roller; 10. Baffle; 11. Mounting base; 12. Right angle reducer; 13. Coupling; 14. Slider fixing plate; 15. Slider; 16. Lead screw and nut pair; 17. Groove; 18. Protrusion; 19. Lead screw seat; 20. Limit switch; 21. Limit stop block; 22. Deep groove ball bearing; 23. Pressure cap. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] It should be noted that in the description of this utility model, the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying 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.

[0017] Please see Figure 1 This utility model provides a technical solution: a trapezoidal lead screw transmission structure for a liquid tank door of an EDM machine, including a liquid tank frame 1, a mounting plate 2, a servo motor 3, a trapezoidal lead screw 4, a guide rail 5, a nut seat 6, a liquid tank pull block 7, a liquid tank door 8, and rollers 9. The upper part of the front side of the liquid tank frame 1 is open. There are two mounting plates 2 symmetrically arranged on both sides of the open side of the liquid tank frame 1. Baffles 10 are provided at both ends of the open side of the liquid tank frame 1. The outer end of the mounting plate 2 is provided with a guide rail 5 and a mounting seat 11. The lower surface of the mounting seat 11... A right-angle reducer 12 is provided, and a servo motor 3 is provided at the input end of the right-angle reducer 12. The output shaft of the servo motor 3 is connected to the input shaft of the right-angle reducer 12. The bottom of the trapezoidal lead screw 4 is connected to the output shaft of the right-angle reducer 12 through a coupling 13. A slider fixing plate 14 is provided on one side of the nut seat 6. The slider fixing plate 14 is slidably engaged with the guide rail 5 through a slider 15. The nut seat 6 is engaged with the trapezoidal lead screw 4 through a lead screw nut pair 16. Lead screw seats 19 are provided on the upper sides of both sides of the mounting plate 2. The top of the trapezoidal lead screw 4 engages with the lead screw seat 19 to ensure its stability. A deep groove ball bearing 22 is installed inside the mounting base 11. The bottom of the trapezoidal lead screw 4 has a smooth surface and engages with the deep groove ball bearing 22. A pressure cap 23 is installed on the upper surface of the mounting base 11, pressing against the upper surface of the deep groove ball bearing 22. The engagement of the deep groove ball bearing 22 ensures the stability of the bottom of the trapezoidal lead screw. A slot 17 is opened in the middle of the outer side of the nut seat 6. Liquid groove pull blocks 7 are installed at both ends of the liquid groove door 8. The slotted pull block 7 is provided with a protrusion 18, which is tenoned with the slot 17 of the nut seat 6. A roller 9 is provided on one side of the liquid tank door 8 via a wheel axle. The roller 9 is supported on the side wall of the liquid tank frame 1 and limited by the baffle 10. Limit switches 20 are provided at the upper and lower ends of both sides of the mounting plate 2. The nut seat 6 is provided with a limit block 21. The limit block 21 cooperates with the limit switch 20. Through the cooperation of the limit block 21 and the upper and lower limit switches 20, the movement of the liquid tank door 8 is constrained, thereby limiting the movement of the liquid tank door 8.

[0018] Installation method and operating principle: Connect the liquid tank door 8 to the rollers on both sides of the liquid tank frame 1 via rollers 9 and limit its position with baffles 10. Connect the guide rail 5 and mounting base 11 to the mounting plate 2 with bolts. Install the right-angle reducer 12 on the lower surface of the mounting base 11. Connect the servo motor 3 to the output end of the right-angle reducer 12. Pass the bottom of the trapezoidal lead screw 4 through the deep groove ball bearing 22 and connect it to the output shaft of the right-angle reducer 12 via coupling 13. Then connect the nut seat 6 and the slider fixing plate 14, and connect the nut seat 6 to the trapezoidal lead screw 4 via the lead screw nut pair 16. Slide the slider fixing plate 14 to the guide rail 5 via the slider 15. Then connect the lead screw seat 19 to the top of the lead screw and connect the lead screw seat 19 to the mounting plate 2 with bolts. Finally, install the mounting plate 2 on the side of the liquid tank frame 1 with bolts, and tenon the protrusion 18 with the groove 17 of the nut seat 6 to complete the installation. During operation, the trapezoidal lead screw 4 is driven to rotate by the servo motor 3 and the right-angle reducer 12. The trapezoidal lead screw 4 cooperates with the lead screw nut pair 16 of the nut seat 6, thereby driving the nut seat 6 to rise and fall. The nut seat 6 is then connected to the guide rail 5 by the slider fixing plate 14 and the slider 15 to ensure stability during the rise and fall. The nut seat 6 is tenoned with the protrusions 18 on both sides of the liquid tank door 8 through the slot 17, thereby driving the liquid tank door 8 to rise and fall. During the rise and fall of the liquid tank door 8, the roller 9 rolls and supports the side wall of the liquid tank frame 1. This utility model has a reasonable structure. It is powered by a servo motor 3 and driven by a trapezoidal lead screw 4. The liquid tank door 8 is guided and raised and lowered along the trapezoidal lead screw 4 to realize the opening and closing movement of the liquid tank door 8. Compared with the cylinder structure, it has greater stability and higher precision. Furthermore, the liquid tank door 8 is supported by rollers 9 on the side wall of the liquid tank frame 1, which further improves the stability of the liquid tank door 8 when raising and lowering. The liquid tank pull block 7 is provided with a protrusion 18, which is tenoned with the groove 17 of the nut seat 6 to avoid the liquid tank door 8 from having a reduced service life due to excessive friction with the liquid tank frame 1 when raising and lowering due to the fastening connection.

[0019] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

[0020] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications and equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A trapezoidal screw rod transmission structure of a spark machine liquid tank door ladder, characterized in that: The system includes a liquid tank frame (1), mounting plate (2), servo motor (3), trapezoidal lead screw (4), guide rail (5), nut seat (6), liquid tank pull block (7), liquid tank door (8), and rollers (9). The upper part of the front side of the liquid tank frame (1) is open. There are two mounting plates (2) symmetrically arranged on both sides of the open side of the liquid tank frame (1). The liquid tank frame (1) is equipped with baffles (10) at both ends of the open side. The outer end of the mounting plate (2) is equipped with a guide rail (5) and a mounting seat (11). The lower surface of the mounting seat (11) is equipped with a right-angle reducer (12). The input end of the right-angle reducer (12) is equipped with a servo motor (3). The output shaft of the servo motor (3) is connected to the input shaft of the right-angle reducer (12). The trapezoidal lead screw... (4) The bottom is connected to the output shaft of the right angle reducer (12) via a coupling (13). A slider fixing plate (14) is provided on one side of the nut seat (6). The slider fixing plate (14) is slidably engaged with the guide rail (5) via a slider (15). The nut seat (6) is engaged with the trapezoidal screw (4) via a screw nut pair (16). A slot (17) is provided in the middle of the outer side of the nut seat (6). Liquid tank pull blocks (7) are provided at both ends of the liquid tank door (8). The liquid tank pull blocks (7) are provided with protrusions (18). The protrusions (18) are tenoned with the slot (17) of the nut seat (6). A roller (9) is provided on one side of the liquid tank door (8) via a wheel axle. The roller (9) is supported on the side wall of the liquid tank frame (1) and limited by a baffle (10).

2. The trapezoidal screw rod transmission structure of the liquid tank door ladder of the spark machine according to claim 1, characterized in that: Screw seats (19) are provided on the upper sides of both sides of the mounting plate (2), and the top of the trapezoidal screw (4) is engaged with the screw seat (19).

3. The trapezoidal screw rod transmission structure of the liquid tank door ladder of the spark machine according to claim 1, characterized in that: Limit switches (20) are provided at the upper and lower ends of both sides of the mounting plate (2), and limit blocks (21) are provided on the nut seat (6). The limit blocks (21) cooperate with the limit switches (20).

4. The trapezoidal screw rod transmission structure of the liquid tank door ladder of the spark machine according to claim 1, characterized in that: The mounting base (11) is provided with a deep groove ball bearing (22). The bottom of the trapezoidal screw (4) is a smooth surface and cooperates with the deep groove ball bearing (22). The upper surface of the mounting base (11) is provided with a pressure cap (23), which is pressed against the upper surface of the deep groove ball bearing (22).

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