Spark machine impact rod

Abstract

The utility model discloses an electric spark machine impact rod which comprises a shell, an electric push rod is fixedly installed on the upper portion of the inner side of the shell, the telescopic end of the electric push rod is vertically downward, a connecting stud is fixed to the upper portion of the electric push rod, a spring top plate is arranged below the electric push rod, and a spring is arranged below the spring top plate. An impact motor is arranged below the spring, an impact head of the impact motor is vertically downward and extends out of the shell, and a groove used for being matched with the spring is formed in the top of the impact motor. The electric push rod, the spring top plate, the spring and the impact motor are sequentially arranged in the shell from top to bottom, and the force applied to the spring by the spring top plate is controlled through stretching and retracting of the electric push rod, so that the force applied to a workpiece by the impact motor is adjusted, and the impact motor is prevented from being damaged due to the fact that the applied force is too large.

Description

Technical Field

[0001] The utility model relates to the technical field of spark machines, in particular to an impact rod of a spark machine. Background Art

[0002] Electric discharge machine, also known as CNC electric discharge machine, electric discharge, spark machine, etc., is an electrical processing equipment, mainly used for processing molds and parts with complex shapes of holes and cavities; processing various conductive materials, such as cemented carbide and hardened steel; processing deep and fine holes, special-shaped holes, deep grooves, narrow slits and cutting thin slices; processing various forming tools, templates and other tools.

[0003] The existing EDM machine needs to perform impact processing during processing, which requires the impact rod to be able to perform lifting and impacting, and maintain processing accuracy. For example, an EDM machine tool impact rod with announcement number CN214053982U realizes horizontal movement of the lifting structure through the cooperation of the first threaded rod and the threaded sleeve, and the second reduction motor drives the second threaded rod to rotate to realize the vertical movement of the impact structure. Therefore, the force applied by the impact structure to the workpiece is provided by the system composed of the second reduction motor and the second threaded rod. During operation, if the force applied by the impact structure to the workpiece is too large, it will cause damage to the impact structure, so it is necessary to add a buffer structure to overcome this. Utility Model Content

[0004] The utility model aims to provide an impact rod of a spark machine to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spark machine impact rod, comprising a shell, an electric push rod fixedly installed on the inner upper part of the shell, the telescopic end of the electric push rod vertically downward, a connecting stud fixed above the electric push rod, a spring top plate is arranged below the electric push rod, a spring is arranged below the spring top plate, an impact motor is arranged below the spring, the impact head of the impact motor vertically downward and extends out of the shell, and a groove for matching the spring is opened on the top of the impact motor.

[0006] Preferably, the shell consists of an upper shell and a lower shell, the inner surface of the upper shell is provided with an internal thread, the outer surface of the electric push rod is provided with an external thread, the lower middle part of the upper shell is provided with an electric push rod positioning step, the lower shell is clearance-fitted with the spring top plate and the impact motor, and the bottom of the lower shell is provided with an opening for the impact head of the impact motor to pass through.

[0007] Preferably, a spline is fixed on the inner wall of the lower shell, and a spline groove cooperating with the spline is formed on the outer surface of the impact motor and the outer surface of the spring top plate.

[0008] Preferably, a rotary cover is fixedly provided on the top of the electric push rod, and a plurality of protrusions are evenly spaced on the side of the rotary cover.

[0009] Preferably, a threading opening is provided at the lower portion of the housing, and the power supply wire of the impact motor is connected to the impact motor via the threading opening, and the threading opening is in the shape of a vertical long strip.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the interior of the housing of the utility model is provided with an electric push rod, a spring top plate, a spring, and an impact motor in order from top to bottom, and the force applied by the spring top plate to the spring is controlled by the extension and retraction of the electric push rod, thereby adjusting the force that the impact motor can apply to the workpiece, thereby preventing the impact motor from being damaged due to excessive force;

[0011] The electric push rod is threadedly connected to the housing, which facilitates the disassembly and assembly of the electric push rod and makes maintenance easier;

[0012] There are splines and spline grooves between the impact motor and the spring top plate and the housing, so that the impact motor and the spring top plate are in a stable operation state;

[0013] A threading opening is provided at the lower part of the shell, and the threading opening is used for connecting the power supply wire and the impact motor. The vertical long strip threading opening enables the power supply wire to cooperate with the lifting and lowering of the impact motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

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

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the shell of the utility model;

[0017] Figure 3 It is a schematic diagram of the overall external structure of the utility model.

[0018] In the figure: 1. housing; 2. electric push rod; 3. spring top plate; 4. spring; 5. impact motor; 6. power supply wire; 7. threading port; 8. spline groove; 9. groove; 10. electric push rod positioning step; 11. external thread; 12. screw cap; 13. connecting stud; 14. lower housing; 15. opening; 16. upper housing; 17. spline. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0020] See also Figure 1-3 In the embodiment of the utility model, a spark machine impact rod comprises a shell 1, an electric push rod 2 is fixedly installed on the inner upper part of the shell 1, the telescopic end of the electric push rod 2 is vertically downward, a connecting stud 13 is fixed above the electric push rod 2, a spring top plate 3 is arranged below the electric push rod 2, a spring 4 is arranged below the spring top plate 3, an impact motor 5 is arranged below the spring 4, the impact head of the impact motor 5 is vertically downward and extends out of the shell 1, and a groove 9 for matching the spring 4 is opened on the top of the impact motor 5.

[0021] The housing 1 consists of an upper housing 16 and a lower housing 14. The inner surface of the upper housing 16 is provided with an internal thread, the outer surface of the electric push rod 2 is provided with an external thread 11, and the middle and lower part of the upper housing 16 is provided with an electric push rod positioning step 10. The lower housing 14 is clearance-fitted with the spring top plate 3 and the impact motor 5, and the bottom of the lower housing 14 is provided with an opening 15 for the impact head of the impact motor 5 to pass through.

[0022] A spline 17 is fixed on the inner wall of the lower housing 14 , and a spline groove 8 matching with the spline 17 is formed on the outer surface of the impact motor 5 and the outer surface of the spring top plate 3 .

[0023] A rotary cover 12 is fixedly provided on the top of the electric push rod 2 , and a plurality of protrusions are evenly spaced on the side of the rotary cover 12 .

[0024] A threading opening 7 is provided at the lower portion of the housing 1 , and a power supply wire 6 of the impact motor 5 is connected to the impact motor 5 via the threading opening 7 . The threading opening 7 is in the shape of a vertical strip.

[0025] The working principle of the utility model is as follows: the interior of the housing 1 of the utility model is provided with an electric push rod 2, a spring top plate 3, a spring 4, and an impact motor 5 from top to bottom in sequence, and the force applied by the spring top plate 3 to the spring 4 is controlled by the extension and contraction of the electric push rod 2, thereby adjusting the force that the impact motor 5 can apply to the workpiece, thereby preventing the impact motor 5 from being damaged due to excessive force applied;

[0026] The electric push rod 2 is threadedly connected to the housing 1, which facilitates the disassembly and assembly of the electric push rod 2 and makes maintenance easier;

[0027] There are splines 17 and spline grooves 8 between the impact motor 5 and the spring top plate 3 and the housing 1, so that the impact motor 5 and the spring top plate 3 are in a stable state;

[0028] A threading opening 7 is provided at the lower portion of the housing 1 , and the threading opening 7 is used for connecting the power supply wire 6 to the impact motor 5 . The vertical long strip-shaped threading opening 7 enables the power supply wire 6 to cooperate with the lifting and lowering of the impact motor 5 .

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A spark machine impact rod, comprising a housing (1), characterized in that: An electric push rod (2) is fixedly mounted on the inner upper portion of the housing (1), the telescopic end of the electric push rod (2) is vertically downward, a connecting stud (13) is fixed above the electric push rod (2), a spring top plate (3) is arranged below the electric push rod (2), a spring (4) is arranged below the spring top plate (3), an impact motor (5) is arranged below the spring (4), an impact head of the impact motor (5) is vertically downward and extends out of the housing (1), and a groove (9) for matching the spring (4) is opened at the top of the impact motor (5).

2. The spark machine impact rod according to claim 1, characterized in that: The housing (1) is composed of an upper housing (16) and a lower housing (14); an inner surface of the upper housing (16) is provided with an internal thread; an outer surface of the electric push rod (2) is provided with an external thread (11); an electric push rod positioning step (10) is provided at the middle and lower part of the upper housing (16); the lower housing (14) is clearance-matched with the spring top plate (3) and the impact motor (5); and an opening (15) for the impact head of the impact motor (5) to pass through is provided at the bottom of the lower housing (14).

3. The spark machine impact rod according to claim 2, characterized in that: A spline (17) is fixed on the inner wall of the lower housing (14), and a spline groove (8) cooperating with the spline (17) is provided on the outer surface of the impact motor (5) and the outer surface of the spring top plate (3).

4. The spark machine impact rod according to claim 1, characterized in that: A rotary cover (12) is fixedly arranged on the top of the electric push rod (2), and a plurality of protrusions are arranged at equal intervals on the side surface of the rotary cover (12).

5. The spark machine impact rod according to claim 1, characterized in that: A wire threading opening (7) is provided at the lower portion of the housing (1), and a power supply wire (6) of the impact motor (5) is connected to the impact motor (5) via the wire threading opening (7). The wire threading opening (7) is in the shape of a vertical long strip.

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