Taper head moving mechanism of medium-speed wire feeding machine tool

Abstract

The utility model discloses a taper head moving mechanism of a medium-speed wire feeding machine tool, which comprises a U-axis moving mechanism, a V-axis moving mechanism, a connecting plate arranged above the V-axis moving mechanism, a mounting plate arranged below the U-axis moving mechanism and a guide rail seat arranged between the U-axis moving mechanism and the V-axis moving mechanism, the U-axis moving mechanism comprises a first stepping motor, a first lead screw, a first guide rail and a first sliding block, a first lead screw nut is further arranged on the first lead screw, a through groove is formed in the connecting position of the first guide rail and the guide rail base, the V-axis moving mechanism comprises a second stepping motor, a second lead screw, a second guide rail and a second sliding block, a second lead screw nut is further arranged on the second lead screw, and a second lead screw nut is further arranged on the second guide rail. A through groove is also formed in the connecting position of the second guide rail and the guide rail base, a cylindrical pin is fixedly installed in the through groove, elastic base plates are arranged at the positions, close to the first stepping motor and the second stepping motor, of the guide rail base, and a limiting plate is further arranged between the two elastic base plates, so that the taper head moving mechanism has better stability in the running process.

Description

Technical Field

[0001] The utility model relates to the technical field of wire-cutting machine tools, in particular to a taper head moving mechanism for a medium wire-cutting machine tool. Background Art

[0002] Medium-speed WEDM is also a type of wire-cut EDM. Its working principle is to use a continuously moving molybdenum wire (called electrode wire) as an electrode to perform pulsed spark discharge to erode metal and cut the workpiece into shape. Since pulsed spark discharge is required to erode metal and cut the workpiece into shape, the taper head of the medium-speed WEDM is a special accessory used to process tapered holes or tapered surfaces on the machine tool. It is installed on the machine tool spindle and can achieve precise taper processing of the workpiece. However, the existing medium-speed WEDM taper head moving mechanism has poor stability due to the vibration generated during processing, which may cause the moving mechanism to deviate during subsequent processing. Utility Model Content

[0003] The purpose of the utility model is to provide a taper head moving mechanism for a medium wire cutting machine tool to solve the above technical problems.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a medium-speed wire cutting machine tool taper head moving mechanism, comprising a U-axis moving mechanism, a V-axis moving mechanism, a connecting plate arranged above the V-axis moving mechanism, a mounting plate arranged below the U-axis moving mechanism, and a guide rail seat arranged between the U-axis moving mechanism and the V-axis moving mechanism, the U-axis moving mechanism comprising a first stepper motor, a first screw connected to the first stepper motor, a first guide rail arranged on the guide rail seat, and a first slider arranged on the first guide rail, the first screw rod is also provided with a first wire for connecting to the first slider Rod nut, a through groove is provided at the connection between the first guide rail and the guide rail seat, the V-axis moving mechanism includes a second stepper motor, a second screw rod connected to the second stepper motor, a second guide rail arranged on the guide rail seat and a second slider arranged on the second guide rail, the second screw rod is also provided with a second screw rod nut for connecting with the second slider, a through groove is also provided at the connection between the second guide rail and the guide rail seat, a cylindrical pin is fixedly installed in the through groove, an elastic pad is provided on the guide rail seat near the first stepper motor and the second stepper motor, and a limit plate is also provided between the two elastic pads.

[0005] Preferably, the connecting plate is provided with a plurality of mounting holes for mounting the taper head.

[0006] Preferably, elastic washers are provided on both sides of the cylindrical pin.

[0007] Preferably, the first stepper motor and the first screw rod are connected via a coupling, and the second stepper motor and the second screw rod are connected via a coupling.

[0008] Preferably, a first protective cover is provided on the outside of the first stepper motor, and a first through hole is provided on the first protective cover for the first screw rod to pass through. A second protective cover is also provided on the outside of the second stepper motor, and a second through hole is provided on the second protective cover for the second screw rod to pass through.

[0009] Preferably, a short-handle limit switch is fixedly connected to the elastic pad.

[0010] Preferably, the elastic pad is connected to the guide rail seat via a hexagon socket countersunk bolt.

[0011] Preferably, the contact surfaces of the first screw nut and the second screw nut with the guide rail seat are provided with through holes for passing the hexagon socket countersunk bolts.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] By setting through grooves at the connection between the first guide rail and the second guide rail and the guide rail seat on both sides and installing cylindrical pins with elastic washers, the moving mechanism has better stability and positioning accuracy during operation. The design of the through grooves allows the cylindrical pins to have a certain displacement space when subjected to external force, and the elastic pads are made of rubber pads, which can absorb the vibration generated during processing, reduce the direct impact on the guide rail seat, enhance the stability of the moving mechanism, and thus improve the working accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 This is an overall schematic diagram of a moving mechanism for the taper head of a medium wire cutting machine tool according to this embodiment;

[0016] Figure 2 This is a schematic diagram highlighting the U-axis moving mechanism in the taper head moving mechanism of a medium wire cutting machine tool according to this embodiment;

[0017] Figure 3 This is a schematic diagram highlighting the V-axis moving mechanism in the taper head moving mechanism of a medium wire cutting machine tool according to this embodiment;

[0018] Figure 4 Schematic diagram of the structure of the first stepper motor and the first protective cover of this embodiment;

[0019] Figure 5 Schematic diagram of the structure of the second stepping motor and the second protective cover of this embodiment;

[0020] Figure 6 Schematic diagram of the structure inside the through slot of this embodiment;

[0021] Figure 7 Schematic diagram of the hexagon socket countersunk bolt in this embodiment;

[0022] Figure 8 It is a front view of the first screw nut in this embodiment.

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] 1. U-axis moving mechanism; 2. V-axis moving mechanism; 3. Connecting plate; 4. Mounting plate; 5. Guide rail seat; 6. First stepper motor; 7. First screw rod; 8. First guide rail; 9. First slider; 10. First screw rod nut; 11. Through slot; 12. Second stepper motor; 13. Second screw rod; 14. Second guide rail; 15. Second slider; 16. Second screw rod nut; 17. Cylindrical pin; 18. Elastic pad; 19. Limit plate; 20. Mounting hole; 21. Elastic washer; 22. Coupling; 23. First protective cover; 24. Second protective cover; 25. First through hole; 26. Second through hole; 27. Short-handle limit switch; 28. Hexagon socket countersunk bolt; 29. ​​Through hole. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0026] See also Figure 1-8The utility model provides a technical solution: a medium-speed wire cutting machine tool taper head moving mechanism, including a U-axis moving mechanism 1, a V-axis moving mechanism 2, a connecting plate 3 arranged above the V-axis moving mechanism 2, a mounting plate 4 arranged below the U-axis moving mechanism 1, and a guide rail seat 5 arranged between the U-axis moving mechanism 1 and the V-axis moving mechanism 2. The U-axis moving mechanism 1 includes a first stepper motor 6, a first screw rod 7 connected to the first stepper motor 6, a first guide rail 8 arranged on the guide rail seat 5, and a first slider 9 arranged on the first guide rail 8. The first screw rod 7 is also provided with a first screw rod nut 10 for connecting with the first slider 9. The first guide rail 8 A through slot 11 is provided at the connection with the guide rail seat 5, and the V-axis moving mechanism 2 includes a second stepping motor 12, a second screw rod 13 connected to the second stepping motor 12, a second guide rail 14 arranged on the guide rail seat 5 and a second slider 15 arranged on the second guide rail 14. The second screw rod 13 is also provided with a second screw nut 16 for connecting with the second slider 15. A through slot 11 is also provided at the connection between the second guide rail 14 and the guide rail seat 5, and a cylindrical pin 17 is fixedly installed in the through slot 11. An elastic pad 18 is provided on the guide rail seat 5 near the first stepping motor 6 and the second stepping motor 12, and a limit plate 19 is also provided between the two elastic pads 18.

[0027] Specifically, the connecting plate 3 is provided with a plurality of mounting holes 20 for mounting the taper head. By providing the mounting holes 20 , the connecting plate 3 can ensure accurate installation and rapid replacement of the taper head.

[0028] Specifically, elastic washers 21 are provided on both sides of the cylindrical pin 17. By providing the elastic washers 21 on both sides of the cylindrical pin 17, the moving mechanism can be well supported during the movement process to prevent the loss of accuracy due to vibration or impact. The use of the elastic washers 21 increases the buffering performance of the mechanism, thereby improving the stability and reliability of the movement of the taper head.

[0029] Specifically, the first stepper motor 6 and the first screw rod 7 are connected through a coupling 22, and the second stepper motor 12 and the second screw rod 13 are connected through a coupling 22. Furthermore, a first protective cover 23 is provided on the outer side of the first stepper motor 6, and a first through hole 25 is provided on the first protective cover 23 for penetrating the first screw rod 7. A second protective cover 24 is also provided on the outer side of the second stepper motor 12, and a second through hole 26 is provided on the second protective cover 24 for penetrating the second screw rod 13. Through the above arrangement, the first stepper motor 6 and the second stepper motor 12 are effectively protected during operation, avoiding damage to the motors by external factors such as dust and cutting fluid, thereby extending the service life of the equipment.

[0030] Specifically, a short handle limit switch 27 is fixedly connected to the elastic pad 18. By setting the short handle limit switch 27, the tapered head moving mechanism can automatically stop when reaching a predetermined position, ensuring the safety and accuracy of the operation. The use of the short handle limit switch 27 improves the response speed and reliability of the system.

[0031] Specifically, the elastic pad 18 is connected to the guide rail base 5 via hexagon socket countersunk bolts 28. The use of hexagon socket countersunk bolts 28 provides a more secure connection between the elastic pad 18 and the guide rail base 5, while also facilitating disassembly and maintenance. The use of hexagon socket countersunk bolts 28 not only enhances the stability of the connection but also reduces the risk of accidental scratches or damage caused by protruding bolts.

[0032] Furthermore, the contact surfaces between the first screw nut 10 and the second screw nut 16 and the guide rail seat 5 are provided with through holes 29 for passing the hexagonal countersunk bolts 28. By providing the through holes 29, the contact surfaces between the first screw nut 10 and the second screw nut 16 will not be unable to move due to the hexagonal countersunk bolts 28, thereby effectively improving the working efficiency of the moving mechanism.

[0033] A specific application example of this embodiment is:

[0034] When using this device, the operator inputs the corresponding taper head movement parameters, including movement distance, speed, and direction, through the control panel based on the processing requirements. After entering the parameters, the machine tool is started. The first stepper motor 6 and the second stepper motor 12 will drive the first and second screws 7 and 13 to rotate according to the input instructions. The first and second screw nuts 10 and 16 drive the first and second slides 9 and 15 to move on the first and second guide rails 8 and 14, thereby causing the taper head to move in the U and V directions. By providing through-slots 11 at the connection between the first and second guide rails 8 and 14 and the guide rail base 5 on both sides and installing cylindrical pins 17 with elastic washers 21, the moving mechanism has better stability and positioning accuracy during operation. The design of the through-slots 11 allows the cylindrical pin 17 to have a certain amount of displacement space when subjected to external forces. The elastic pad 18 is a rubber pad, which can absorb vibrations generated during processing, reduce direct impact on the guide rail base 5, enhance the stability of the moving mechanism, and thus improve working accuracy.

[0035] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0037] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A taper head moving mechanism for a medium wire cutting machine tool, characterized by: The invention comprises a U-axis moving mechanism (1), a V-axis moving mechanism (2), a connecting plate (3) arranged above the V-axis moving mechanism (2), a mounting plate (4) arranged below the U-axis moving mechanism (1), and a guide rail seat (5) arranged between the U-axis moving mechanism (1) and the V-axis moving mechanism (2), wherein the U-axis moving mechanism (1) comprises a first stepper motor (6), a first screw rod (7) connected to the first stepper motor (6), a first guide rail (8) arranged on the guide rail seat (5), and a first slider (9) arranged on the first guide rail (8), wherein the first screw rod (7) is further provided with a first screw rod nut (10) for connecting with the first slider (9), and a through groove (11) is provided at the connection between the first guide rail (8) and the guide rail seat (5). The V-axis moving mechanism (2) comprises a second stepping motor (12), a second screw rod (13) connected to the second stepping motor (12), a second guide rail (14) arranged on the guide rail seat (5), and a second slider (15) arranged on the second guide rail (14). The second screw rod (13) is further provided with a second screw rod nut (16) for connecting to the second slider (15). A through groove (11) is also provided at the connection between the second guide rail (14) and the guide rail seat (5). A cylindrical pin (17) is fixedly installed in the through groove (11). An elastic pad (18) is provided on the guide rail seat (5) near the first stepping motor (6) and the second stepping motor (12), and a limit plate (19) is further provided between the two elastic pads (18).

2. The taper head moving mechanism of a medium wire cutting machine tool according to claim 1, characterized in that: The connecting plate (3) is provided with a plurality of mounting holes (20) for mounting the taper head.

3. The taper head moving mechanism of a medium wire cutting machine tool according to claim 1, characterized in that: Elastic washers (21) are provided on both sides of the cylindrical pin (17).

4. The taper head moving mechanism of a medium wire cutting machine tool according to claim 1, characterized in that: The first stepper motor (6) and the first screw rod (7) are connected via a coupling (22), and the second stepper motor (12) and the second screw rod (13) are connected via a coupling (22).

5. The taper head moving mechanism of a medium wire cutting machine tool according to claim 4, characterized in that: A first protective cover (23) is further provided on the outer side of the first stepper motor (6), and a first through hole (25) is provided on the first protective cover (23) for penetrating the first screw rod (7). A second protective cover (24) is further provided on the outer side of the second stepper motor (12), and a second through hole (26) is provided on the second protective cover (24) for penetrating the second screw rod (13).

6. The taper head moving mechanism of a medium wire cutting machine tool according to claim 1, characterized in that: A short-handle limit switch (27) is fixedly connected to the elastic pad (18).

7. The taper head moving mechanism of a medium wire cutting machine tool according to claim 6, characterized in that: The elastic pad (18) and the guide rail seat (5) are connected via hexagon socket countersunk bolts (28).

8. The taper head moving mechanism of a medium wire cutting machine tool according to claim 7, characterized in that: The contact surfaces of the first screw nut (10) and the second screw nut (16) with the guide rail seat (5) are provided with through holes (29) for passing hexagon socket countersunk bolts (28).

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