Quick change device for machine head of electric discharge machine

Abstract

The utility model relates to an electric discharge machine head quick-changing device, which belongs to the technical field of electromachining and comprises an electric discharge machine main body, a mounting box is arranged on the electric discharge machine main body, a connecting seat is arranged at the bottom of the mounting box, an arc-shaped plate is slidably connected to the inner side wall of the connecting seat, and a machine head main body is inserted into the bottom of the connecting seat. A square groove is formed in the inner side wall of the connecting base, a square plate is rotationally connected to the inner side wall of the connecting base, a clamping column is rotationally connected to one end of the square plate, a moving groove is formed in the outer side wall of the connecting base in a penetrating mode, a clamping groove is formed in the outer side wall of the machine head body in a penetrating mode, and a cross beam is fixedly connected to the top of the machine head body. Through cooperative use of an arc-shaped plate, a machine head main body, a square groove, a square plate, a clamping column, a moving groove, a clamping groove and a cross beam, when a worker inserts a machine head into a connecting seat, the arc-shaped plate pushes the square plate, so that the clamping column is driven to fix the machine head, the time consumption of replacing equipment by the worker is reduced, and the operation efficiency of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical machining, and particularly to a quick-changing device for an electric spark machine head. Background Art

[0002] The EDM machine is a kind of mechanical equipment widely used in the fields of metal processing and mold manufacturing. It uses the high-temperature and high-pressure arc generated by discharge to melt and evaporate the surface of the metal material, thereby achieving the processing purposes of cutting and drilling.

[0003] However, in the process of production and processing, it is necessary to perform cutting and drilling operations on the workpiece according to customer needs. Because the shapes and functions of the EDM machine heads are different, the machine heads need to be replaced frequently during the production process, which increases the downtime of the production line and reduces production efficiency. In addition, because the replacement of the EDM machine head involves cumbersome disassembly and installation steps, professional technicians are required to replace the machine head. Enterprises need to hire high-paid technicians, which increases labor costs, greatly consumes production time, and increases equipment maintenance costs.

[0004] In order to solve the above problems, the present application proposes a quick-change device for the head of an electric spark machine. Summary of the invention

[0005] The utility model aims at the technical problems existing in the prior art and provides a quick-changing device for the head of an electric spark machine.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: a quick-changing device for an EDM machine head, comprising an EDM machine body, an installation box is arranged on the EDM machine body, a connecting seat is arranged at the bottom of the installing box, an inner side wall of the connecting seat is slidably connected with an arc plate, a head body is inserted at the bottom of the connecting seat, a square groove is opened on the inner side wall of the connecting seat, a square plate is rotatably connected to the inner side wall of the connecting seat, a clamping column is rotatably connected to one end of the square plate, a movable groove is penetrated through the outer side wall of the connecting seat, a clamping groove is penetrated through the outer side wall of the head body, and a crossbeam is fixedly connected to the top of the head body.

[0007] Preferably, the top inner wall of the connecting seat is fixedly connected to a column, the outer wall of the column is slidably connected to a moving block, and the outer walls at both ends of the moving block are respectively fixedly connected to connecting springs. By arranging the column, the moving block and the connecting spring, it is convenient to offset the reaction force exerted on the machine head when processing the workpiece.

[0008] Preferably, the inner wall of the connecting seat is provided with a first positioning groove, the outer wall of the arc plate is provided with a second positioning groove, the outer wall of the arc plate is fixedly connected with a return spring, and the end of the return spring away from the arc plate is fixedly connected to the inner wall of the connecting seat. By providing the first positioning groove, the second positioning groove and the return spring, it is convenient to push the arc plate, so that the arc plate can be quickly reset.

[0009] Preferably, a sliding groove is provided on the inner bottom wall of the connecting seat, and a sliding column is fixedly connected to the bottom of the arc plate. By providing the sliding groove and the sliding column, the moving path of the arc plate can be limited to avoid position displacement of the arc plate during movement.

[0010] Preferably, a protective plate is fixedly connected to the top of the electric spark machine body. By providing the protective plate, it is convenient to protect the staff and avoid harm to the safety of the staff when the knife flies.

[0011] Preferably, an observation panel is provided on the outer side wall of the electric spark machine body, and the observation panel is provided to facilitate the staff to observe the work progress.

[0012] The beneficial effects of this utility model are:

[0013] Through the coordinated use of the arc plate, the machine head body, the square groove, the square plate, the clamping column, the movable groove, the clamping groove and the cross beam, when the staff inserts the machine head into the interior of the connecting seat, the arc plate pushes the square plate, thereby driving the clamping column to fix the machine head, reducing the time spent by the staff to replace the equipment and improving the operating efficiency of the equipment.

[0014] Through the coordinated use of the column, the moving block and the connecting spring, when the machine head impacts the workpiece, the moving block slides on the outer wall of the column, and the inertial kinetic energy generated by its own movement offsets the force of the workpiece reacting on the machine head, thereby reducing the vibration of the machine head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the practical connecting seat and related parts;

[0017] Figure 3 This is a schematic diagram of the structure of the practical curved plate and related parts;

[0018] Figure 4 This is a schematic diagram of the structure of the practical slide and related parts.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. EDM machine body; 2. Installation box; 3. Connecting seat; 4. Arc plate; 5. Machine head body; 6. Square slot; 7. Square plate; 8. Clamping column; 9. Moving slot; 10. Clamping slot; 11. Crossbeam; 12. Column; 13. Moving block; 14. Connecting spring; 15. First positioning slot; 16. Second positioning slot; 17. Return spring; 18. Slide slot; 19. Slide column; 20. Protective plate; 21. Observation plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0022] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0023] In the description of the present application, the term "for example" is used to mean "used as an example, illustration or description". Any embodiment described as "for example" in the present application is not necessarily to be interpreted as being more preferred or advantageous than other embodiments. In order to enable any technician in the field to implement and use the present utility, the following description is given. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present utility can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid unnecessary details that make the description of the present utility obscure. Therefore, the present utility is not intended to be limited to the embodiments shown, but is consistent with the widest range of principles and features disclosed in the present application.

[0024] Reference Figure 1-3A quick-change device for an electric spark machine head comprises an electric spark machine body 1, an installation box 2 is arranged on the electric spark machine body 1, a connecting seat 3 is arranged at the bottom of the installation box 2, a cavity is arranged inside the connecting seat 3, an arc plate 4 is slidably connected to the inner side wall of the connecting seat 3, the arc plate 4 is located in the cavity arranged inside the connecting seat 3, a head body 5 is inserted at the bottom of the connecting seat 3, a square groove 6 is opened on the inner side wall of the connecting seat 3, two square grooves 6 are arranged, and the two square grooves 6 are symmetrically distributed with respect to the central axis plane of the connecting seat 3, a square plate 7 is rotatably connected to the inner side wall of the connecting seat 3, and the connection point between the square plate 7 and the connecting seat 3 is located inside the square groove 6, and the square plate 7 One end of the connecting seat 3 is rotatably connected with a post 8, and one end of the square plate 7 rotatably connected with the post 8 is located outside the connecting seat 3. The outer wall of the post 8 away from the end of the square plate 7 is provided with an inclination angle. The outer wall of the connecting seat 3 is penetrated with a movable groove 9, and the inner wall of the movable groove 9 is matched with the outer wall of the post 8, and the post 8 is located inside the movable groove 9. The outer wall of the head body 5 is penetrated with a slot 10, and the inner wall of the slot 10 is matched with the outer wall of the post 8. The top of the head body 5 is fixedly connected with a beam 11, and the top of the beam 11 is provided with an arc, and the arc set at the top of the beam 11 is matched with the gap left at the joint of the two arc-shaped plates 4;

[0025] When in use, the staff inserts the head body 5 into the interior of the connecting seat 3. As the head body 5 rises, the top of the cross beam 11 respectively conflicts with the bottom of the two curved plates 4. As the head body 5 moves, the cross beam 11 pushes the two curved plates 4 to both sides, so that the outer walls of the two curved plates 4 conflict with the outer walls of the two square plates 7 respectively, and further makes the two square plates 7 away from the ends of the two curved plates 4 push the two clamping columns 8 to move toward the center of the connecting seat 3. As the head body 5 moves, the two clamping columns 8 will be inserted into the interior of the clamping groove 10 opened on the head body 5, thereby fixing the head body 5. When replacement is needed, the staff applies a downward force to the head body 5, so that the inner wall of the head body 5 conflicts with the outer wall of the end of the clamping column 8 away from the square plate 7. As the pulling force increases, the two clamping columns 8 will be gradually squeezed out of the two clamping grooves 10 by the head body 5, thereby releasing the lock on the head body 5.

[0026] Reference Figure 3The top inner wall of the connecting seat 3 is fixedly connected with a column 12, and the inner top of the connecting seat 3 is provided with a cavity. The column 12 is located in the top cavity of the connecting seat 3, and the column 12 is coaxial with the connecting seat 3. The outer wall of the column 12 is slidably connected with a moving block 13. The outer walls at both ends of the moving block 13 are respectively fixedly connected with connecting springs 14, and the ends of the two connecting springs 14 away from the moving block 13 are respectively fixedly connected to the inner wall of the connecting seat 3. When the connecting seat 3 impacts the workpiece under the action of the equipment, the moving block 13 moves in the moving direction of the connecting seat 3 due to inertia. When the machine head body 5 conflicts with the workpiece, the movement of the connecting seat 3 stops. At this time, the workpiece has a reaction force on the connecting seat 3, and the moving block 13 continues to move under the action of inertia, thereby offsetting the reaction force of the workpiece on the connecting seat 3, reducing the reaction force on the connecting seat 3 and the machine head body 5, thereby protecting the connecting seat 3 and the machine head body 5.

[0027] Reference Figure 3 A first positioning groove 15 is provided on the inner side wall of the connecting seat 3, and two first positioning grooves 15 are provided. The two first positioning grooves 15 are respectively located above the two square grooves 6. A second positioning groove 16 is provided on the outer side wall of the arc plate 4, and two second positioning grooves 16 are provided. The positions of the two second positioning grooves 16 correspond to the positions of the two first positioning grooves 15, and the two second positioning grooves 16 are respectively located on the outer side walls of the two arc plates 4. The outer side walls of the two arc plates 4 are fixedly connected with return springs 17, and one end of the two return springs 17 close to the two arc plates 4 is respectively located inside the two second positioning grooves 16, and one end of the two return springs 17 away from the two arc plates 4 is respectively located inside the two first positioning grooves 15 and fixedly connected to the inner side wall of the connecting seat 3.

[0028] Reference Figure 4 A slide groove 18 is provided on the inner bottom wall of the connecting seat 3. Two slide grooves 18 are provided. The two slide grooves 18 are symmetrically distributed on the central axis plane of the connecting seat 3. A slide column 19 is fixedly connected to the bottom of the arc plate 4. Four slide columns 19 are provided. The four slide columns 19 are respectively located at the bottom of the two arc plates 4, and the four slide columns 19 are respectively located inside the two slide grooves 18.

[0029] Reference Figure 1 A protective plate 20 is fixedly connected to the top of the EDM machine body 1, and the protective plate 20 surrounds the connecting seat 3 and the head body 5 to prevent the head body 5 from breaking and splashing when the equipment is in operation, thereby causing harm to the staff.

[0030] Reference Figure 1 The outer side wall of the EDM machine body 1 is provided with an observation plate 21, which is made of transparent material, so that the staff can observe the processing process in real time, so as to prevent the production accident in time.

[0031] Working principle:

[0032] In the quick-changing device for the head of the EDM machine, the staff inserts the head body 5 into the interior of the connecting seat 3. As the head body 5 rises, the top of the crossbeam 11 respectively contacts the bottom of the two arc-shaped plates 4. As the head body 5 moves, the crossbeam 11 pushes the two arc-shaped plates 4 to both sides, squeezes the two return springs 17, and further makes the outer walls of the two arc-shaped plates 4 contact the outer walls of the two square plates 7 respectively, so that the outer walls of the two square plates 7 close to one end of the two arc-shaped plates 4 gradually enter the interior of the two square grooves 6, and further makes the two square plates 7 away from one end of the two arc-shaped plates 4 push the two clamping columns 8 toward the connecting seat 3. The center of the seat 3 moves relatively, and as the head body 5 moves, the two clamping columns 8 will be inserted into the inside of the clamping groove 10 opened on the head body 5, so as to fix the head body 5. When replacement is needed, the staff will apply a downward force to the head body 5, so that the inner wall of the head body 5 will collide with the outer wall of the end of the clamping column 8 away from the square plate 7. Since the two clamping columns 8 are arranged at an inclined angle at one end close to the head body 5, as the pulling force increases, the two clamping columns 8 will be gradually squeezed out of the two clamping grooves 10 by the head body 5, thereby releasing the lock on the head body 5. At this time, the two arc plates 4 move to their original positions under the push of the two return springs 17.

[0033] In the quick-changing device for the head of the electric spark machine, when the connecting seat 3 drives the head body 5 to move downward to process the workpiece, a certain impact force will be generated when the head body 5 contacts the workpiece, so that the workpiece has a certain reaction force on the head body 5. When the connecting seat 3 moves downward, the moving block 13 is subjected to a force opposite to the moving direction of the connecting seat 3, and moves slightly toward the top of the connecting seat 3. When the head body 5 contacts the workpiece, the movement of the connecting seat 3 stops. At this time, the moving block 13 continues to move toward the direction of the head body 5 under the action of inertia, thereby offsetting the reaction force of the workpiece and reducing the vibration of the head body 5.

[0034] Although the preferred embodiments of the present invention have been described, other changes and modifications may be made to these embodiments once those skilled in the art have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0035] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

Claims

1. A quick-change device for an EDM machine head, comprising an EDM machine body (1), characterized in that: The electric spark machine body (1) is provided with an installation box (2), the bottom of the installation box (2) is provided with a connecting seat (3), the inner side wall of the connecting seat (3) is slidably connected with an arc plate (4), the bottom of the connecting seat (3) is inserted with a head body (5), the inner side wall of the connecting seat (3) is provided with a square groove (6), the inner side wall of the connecting seat (3) is rotatably connected with a square plate (7), one end of the square plate (7) is rotatably connected with a clamping column (8), the outer side wall of the connecting seat (3) is penetrated with a movable groove (9), the outer side wall of the head body (5) is penetrated with a clamping groove (10), and the top of the head body (5) is fixedly connected with a crossbeam (11).

2. The quick-change device for an EDM machine head according to claim 1, characterized in that: The top inner side wall of the connection seat (3) is fixedly connected to a column (12), the outer side wall of the column (12) is slidably connected to a moving block (13), and the outer side walls at both ends of the moving block (13) are respectively fixedly connected to connecting springs (14).

3. The quick change device for an EDM machine head according to claim 1, characterized in that: The inner wall of the connecting seat (3) is provided with a first positioning groove (15), the outer wall of the arc plate (4) is provided with a second positioning groove (16), the outer wall of the arc plate (4) is fixedly connected with a return spring (17), and one end of the return spring (17) away from the arc plate (4) is fixedly connected to the inner wall of the connecting seat (3).

4. The quick change device for an EDM machine head according to claim 1, characterized in that: The inner bottom wall of the connecting seat (3) is provided with a sliding groove (18), and the bottom of the arc-shaped plate (4) is fixedly connected with a sliding column (19).

5. The quick change device for an EDM machine head according to claim 1, characterized in that: A protective plate (20) is fixedly connected to the top of the electric spark machine body (1).

6. The quick change device for an EDM machine head according to claim 1, characterized in that: An observation panel (21) is provided on the outer side wall of the electric spark machine body (1).

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