Double-guide-rail electrode guiding device of electric spark machine tool

Abstract

The utility model discloses a double-guide-rail electrode guide device of an electric spark machine tool, relates to the technical field of electric spark machine tools, and aims to solve the technical problem that the machining efficiency and precision are affected as the guide rail and a sliding block structure are damaged due to the fact that the current guide rail and the sliding block are easily affected by humidity and abrasion caused by relative movement in the using process. Comprising an installation frame, a guide rail mechanism arranged on the installation frame and a protection cover pipe arranged on the outer side of the guide rail mechanism, a guide rod, an adjusting rod and a guide plate are arranged between installation plates, the guide plate is located on the side close to the installation frame, a guide block is arranged on the guide rod in a sliding mode, and an inner guide block is arranged in the guide block. The guide device has the advantages that a protection structure and an anti-abrasion structure are arranged, the guide rail mechanism is isolated from the outside, water, moisture, chippings, oil stains and the like are prevented from entering the guide rail mechanism, meanwhile, abrasion among all parts of the guide rail structure is effectively reduced, and the service life of the guide device can be effectively prolonged under cooperation.

Description

Technical Field

[0001] This utility model relates to the field of electrical discharge machine tool technology, and more specifically, to a dual-guide rail electrode guiding device for an electrical discharge machine tool. Background Technology

[0002] An electrical discharge machining (EDM) machine tool is a special type of machine tool that uses the principle of electrical discharge machining to process conductive materials; it is also known as an electro-erosion machining (EDM) machine tool. It mainly consists of a body, a pulse power supply, and an automatic control system. During machining, the tool electrode and the workpiece are connected to the two poles of the pulse power supply and immersed in the working fluid. The automatic gap control system controls the tool electrode to feed towards the workpiece. When the gap reaches a certain distance, the pulse voltage breaks down the working fluid, generating a spark discharge. The instantaneous high temperature causes localized melting, vaporization, and erosion of the metal on the workpiece surface, thus machining the desired shape.

[0003] Electrode guiding devices guide the EDM head during its up-and-down movement, ensuring a uniform discharge gap between the electrode and the workpiece. Currently, dual-rail electrode guiding devices mainly consist of a guide rail and a slider structure. During use, the guide rail and slider are susceptible to wear from humidity and relative movement, leading to damage and affecting machining efficiency and accuracy. Therefore, we propose a dual-rail electrode guiding device for EDM machines. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a dual-guide rail electrode guiding device for EDM machines. This device solves the technical problem that the guide rail and slider are easily damaged by humidity and relative movement wear during use, which affects the structure of the guide rail and slider and thus affects the processing efficiency and accuracy.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a dual-guide rail electrode guiding device for an EDM machine tool, comprising a mounting frame, a guide rail mechanism mounted on the mounting frame, and a protective cover tube mounted on the outside of the guide rail mechanism. The mounting frame is a rectangular frame plate structure with mounting holes. Mounting plates are arranged in an array at the front end of the mounting frame. A guide rod, an adjusting rod, and a guide plate are arranged between the mounting plates. The guide plate is located on the side closer to the mounting frame. A guide block is slidably mounted on the guide rod. An inner guide block is arranged inside the guide block. A circular hole is opened at the center of the inner guide block. The guide rod is located inside the circular hole. Two sets of protective cover tubes are provided. One end of each protective cover tube is connected to the mounting plate, and the other end of each protective cover tube is connected to the guide block.

[0006] Preferably, a circular hole is formed in the guide block, an annular groove is formed in the circular hole, the inner guide block is located in the annular groove, the inner wall of the annular groove and the outer surface of the inner guide block are provided with first rolling grooves, and first rolling balls are arranged in the first rolling grooves.

[0007] Preferably, a second rolling groove is formed in the inner wall of the circular hole of the inner guide block, second rolling balls are arranged in the second rolling groove, and the second rolling balls are in contact with the outer surface of the guide rod.

[0008] Preferably, the adjusting rod is spirally arranged along the long axis direction, the adjusting rod is located outside the guide rod, a spiral hole is formed in the inner guide block and located between the first rolling groove and the second rolling groove, and the adjusting rod is located in the spiral hole.

[0009] Preferably, a limiting sliding groove is formed in the front end of the guide plate, and a limiting sliding block is arranged at the rear end of the guide block and slidably arranged in the limiting sliding groove.

[0010] Preferably, a fixing plate is arranged at the front end of the mounting frame, a hydraulic device is arranged at the upper end of the fixing plate, an electric spark head is arranged at the tail end of a hydraulic rod of the hydraulic device, a connecting rod is arranged at the side end of the guide block, and the tail end of the connecting rod is connected with the electric spark head.

[0011] Preferably, the guide rod, the adjusting rod and the guide plate are wrapped in the protective cover pipe, the protective cover pipe is corrugated along the long axis direction, the protective cover pipe is made of rubber, the protective cover pipe comprises a large pipe part and a small pipe part, the guide rod and the adjusting rod are located in the small pipe part, and the guide plate is located in the large pipe part.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1、The first rolling ball and the second rolling ball are arranged between the guide block and the inner guide block and between the inner guide block and the guide rod, the sliding friction is converted into rolling friction, the friction between the components is effectively reduced, the wear is reduced, the adjusting rod is matched with the inner guide block, the inner guide block rotates when moving, the supporting point of the guide rod is changed, the wear is evenly distributed on the surface of the guide rod, the rapid wear of a single area is avoided, the service life of the guide device is prolonged, the guide rail and the sliding block are not damaged due to the wear caused by relative movement in the use process, and therefore the machining efficiency and the precision are not affected.

[0014] 2、The utility model discloses still through the design protective cover pipe structure, the setting of protective cover pipe big pipe department and small pipe department can be wrapped in guide rail mechanism, and the corrugated setting of protective cover pipe and rubber material make it flexible telescopic, make protective cover pipe can follow the movement of guide block, closely follow the change of guide block's movement, isolate guide rail mechanism with outside, block moisture, humidity, chippings, oil dirt etc. and enter, prevent guide rail mechanism and damage because of damp or foreign matter abrasion, reduce the adverse effect of outside factor to device, solve the current guide rail and slider in the use process of easy humidity corrosion and lead to the damage of guide rail and slider structure, thereby can influence processing efficiency and precision problem.

[0015] 3、The utility model discloses still through the design adjusting rod structure, adjusting rod spiral design can be positioned to inner guide block along long axis direction, when guide block moves along guide rod, under the position of adjusting rod, make inner guide block rotate while moving, when inner guide block rotates, adjust its support point position to guide rod constantly, let the wear of guide rod surface even distribution, avoid some local area and wear quickly because of long -term stress friction, effectively prolong the service life of inner guide block and guide rod, BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the front view structure schematic drawing of the utility model;

[0017] Figure 2 It is the section structure schematic drawing of the utility model;

[0018] Figure 3 It is the protective cover pipe structure schematic drawing of the utility model;

[0019] Figure 4 It is the mounting bracket structure schematic drawing of the utility model;

[0020] Figure 5 It is the guide rail mechanism structure schematic drawing of the utility model;

[0021] Figure 6 It is the guide block structure schematic drawing of the utility model.

[0022] Mark number explanation in drawing: 101, mounting bracket;102, mounting hole;200, guide rail mechanism;201, mounting plate;202, guide rod;203, guide block;2031, first ball;204, inner guide block;2041, second ball;205, limit sliding block;206, adjusting rod;207, guide plate;2071, limit sliding slot;301, protective cover pipe;302, big pipe department;303, small pipe department;401, fixed plate;402, hydraulic equipment;403, spark-erosion machine head;404, connecting rod. DETAILED DESCRIPTION

[0023] For example, Figures 1 to 6The utility model relates to an electric spark machine tool double guide rail electrode guiding device, including mounting frame 101 and the guide rail mechanism 200 of setting of mounting frame 101 and the protection cover pipe 301 of setting of guide rail mechanism 200 outside, mounting frame 101 is the plate -shaped structure of rectangular frame, is equipped with the mounting hole 102 of setting on mounting frame 101, and the front end array of mounting frame 101 is equipped with mounting plate 201, and the guiding rod 202 and the guide plate 207 of adjusting rod 206 are set up between mounting plate 201, and the guide plate 207 is located on the side close to mounting frame 101, and the guiding block 203 of sliding setting is equipped with on guiding rod 202, and the inner guide block 204 is set up in guiding block 203, and the circular hole is set up in the center of inner guide block 204, and guiding rod 202 is located in the circular hole, and the protection cover pipe 301 is equipped with two groups, and one end of protection cover pipe 301 is connected with mounting plate 201 respectively, and the other end of protection cover pipe 301 is connected with guiding block 203 respectively.

[0024] Specifically, the circular port is opened on the guiding block 203, the annular groove is opened in the circular port, the inner guide block 204 is located in the annular groove, the inner wall of the annular groove and the outer surface of the inner guide block 204 are provided with the first rolling groove, and the first rolling ball 2031 is arranged in the first rolling groove.

[0025] Further, the second rolling groove is opened on the inner wall of the circular hole of the inner guide block 204, the second rolling ball 2041 is arranged in the second rolling groove, and the outer surface of the guiding rod 202 is contacted with the second rolling ball 2041.

[0026] Further, the adjusting rod 206 is spirally arranged along the long axis direction, the adjusting rod 206 is located outside the guiding rod 202, the helical hole is opened on the inner guide block 204, the helical hole is located between the first rolling groove and the second rolling groove, and the adjusting rod 206 is located in the helical hole.

[0027] It is worth mentioning that the front end of the guide plate 207 is provided with a limiting sliding groove 2071, and the rear end of the guide block 203 is provided with a limiting sliding block 205 which is slidingly installed in the limiting sliding groove 2071. The limiting sliding groove 2071 and the limiting sliding block 205 can limit the guide block 203, not only having the positioning and guiding effect, but also preventing the guide block 203 from rotating, thereby ensuring the stability of the electrode guiding.

[0028] It is worth mentioning that the front end of the mounting frame 101 is provided with a fixing plate 401, the upper end of the fixing plate 401 is provided with a hydraulic device 402, the end of the hydraulic rod of the hydraulic device 402 is installed with an electric spark head 403, the side end of the guide block 203 is provided with a connecting rod 404, and the end of the connecting rod 404 is connected with the electric spark head 403. During the processing, the hydraulic device 402 works to make the electric spark head 403 descend, so that the electrode contacts the workpiece to perform the electric spark processing.

[0029] It is worth noting that the protective cover pipe 301 wraps the guide rod 202, the adjusting rod 206 and the guide plate 207, the protective cover pipe 301 is provided with corrugation along the long axis direction, the protective cover pipe 301 is made of rubber material, the protective cover pipe 301 includes a large pipe part 302 and a small pipe part 303, the guide rod 202 and the adjusting rod 206 are located in the small pipe part 303, and the guide plate 207 is located in the large pipe part 302. The large pipe part 302 and the small pipe part 303 of the protective cover pipe 301 can cover the guide rail mechanism 200, and the corrugation of the protective cover pipe 301 can facilitate the expansion and contraction of the protective cover pipe 301. During the electrode guiding process, the protective cover pipe 301 can move and expand and contract along with the guide block 203, so as to protect the guide rail mechanism 200 during the electric spark processing, prevent the guide rail mechanism 200 from being wet and corroded by humidity, and prevent the components of the guide rail mechanism 200 from being damaged.

[0030] Working principle: the embodiment provides a double guide rail electrode guiding device of electric spark machine tool, when in use, first, the mounting frame 101 is fixed in the corresponding position of the electric spark machine tool through the mounting hole 102, which provides the installation basis and stable support for the whole guiding device, when machining, the hydraulic equipment 402 starts to work, the hydraulic rod pushes the electric spark machine head 403 to descend towards the workpiece direction, since the guiding block 203 is connected with the electric spark machine head 403 through the connecting rod 404, the guiding block 203 will make synchronous sliding movement along the guiding rod 202, during the movement of the guiding block 203, the second rolling ball 2041 in the second rolling groove in the inner wall of the circular hole of the inner guiding block 204 contacts with the outer surface of the guiding rod 202 between the inner guiding block 204 and the guiding rod 202, which also replaces the sliding friction with rolling friction, reduces the friction loss between them, prevents the inner wall of the inner guiding block 204 from being excessively worn with the outer surface of the guiding rod 202, the adjusting rod 206 is spirally arranged along the long axis direction and cooperates with the spiral hole on the inner guiding block 204, when the guiding block 203 moves along the guiding rod 202, the adjusting rod 206 limits and restricts the inner guiding block 204, so that the inner guiding block 204 rotates while moving, during the rotation of the inner guiding block 204, the position of the supporting point of the inner guiding block 204 on the guiding rod 202 is continuously adjusted, so that the wear of the surface of the guiding rod 202 is evenly distributed, avoiding the rapid wear of a local area due to long-term frictional force, effectively prolonging the service life of the inner guiding block 204 and the guiding rod 202, during the rotation of the inner guiding block 204, the first rolling ball 2031 in the first rolling groove on the outer surface of the inner guiding block 204 and the inner wall of the annular groove plays a rolling support role, which converts the sliding friction into rolling friction, greatly reduces the friction between them, reduces the wear of the guiding block 203, the limiting sliding groove 2071 at the front end of the guiding plate 207 cooperates with the limiting sliding block 205 at the rear end of the guiding block 203, the limiting sliding block 205 slides in the limiting sliding groove 2071, which plays a precise positioning and guiding role for the guiding block 203, prevents the guiding block 203 from rotating during the movement, ensures the stability and accuracy of the electrode guiding, and further ensures the uniformity of the discharge gap between the electrode and the workpiece, in addition, the protective cover pipe 301 with corrugated shape is made of rubber material, the large pipe part 302 and the small pipe part 303 completely wrap the guiding rod 202, the adjusting rod 206 and the guiding plate 207, when the guiding block 203 moves, the protective cover pipe 301 can flexibly stretch and shrink, closely following the movement of the guiding block 203 and changing, this stretching and shrinking property makes the protective cover pipe 301 isolate the guide rail mechanism 200 from the external environment during the electric spark machining process, effectively blocks the moisture, humidity and debris, oil stains generated during the machining process from entering the guide rail mechanism 200, prevents the guide rail mechanism 200 from being damaged due to damp or foreign matter wear, provides good protection for the guide rail mechanism 200, and finally safeguards the machining efficiency and precision of the electric spark machine tool.

[0031] The utility model discloses an embodiment discloses the better embodiment, but is not limited to this, and the ordinary skill of the art, the spirit of the utility model is appreciated to the above -mentioned embodiment, and different extension and change are made, but as long as not departing from the spirit of the utility model, all are in the protection range of the utility model.

Claims

1. A dual-guide rail electrode guiding device for an electrical discharge machine tool, characterized in that, Includes a mounting frame (101), a guide rail mechanism (200) mounted on the mounting frame (101), and a protective cover tube (301) mounted on the outside of the guide rail mechanism (200). The mounting frame (101) is a rectangular frame plate structure. The mounting frame (101) has mounting holes (102). Mounting plates (201) are arranged in an array at the front end of the mounting frame (101). Guide rods (202), adjusting rods (206), and guide plates (207) are arranged between the mounting plates (201). 207) Located on the side near the mounting bracket (101), the guide rod (202) is slidably provided with a guide block (203), and an inner guide block (204) is provided inside the guide block (203). A circular hole is opened at the center of the inner guide block (204), and the guide rod (202) is located inside the circular hole. The protective cover tube (301) is provided in two sets. One end of the protective cover tube (301) is connected to the mounting plate (201) respectively, and the other end of the protective cover tube (301) is connected to the guide block (203) respectively.

2. The dual-guide rail electrode guiding device for an EDM machine tool according to claim 1, characterized in that, The guide block (203) has a circular opening, and an annular groove is formed inside the circular opening. The inner guide block (204) is located inside the annular groove. The inner wall of the annular groove and the outer surface of the inner guide block (204) are both provided with a first rolling groove, and a first ball (2031) is provided inside the first rolling groove.

3. The dual-guide rail electrode guiding device for an EDM machine tool according to claim 2, characterized in that, The inner wall of the circular hole of the inner guide block (204) is provided with a second rolling groove, and a second ball (2041) is provided in the second rolling groove. The second ball (2041) is in contact with the outer surface of the guide rod (202).

4. The dual-guide rail electrode guiding device for an EDM machine tool according to claim 3, characterized in that, The adjusting rod (206) is spirally arranged along its long axis. The adjusting rod (206) is located outside the guide rod (202). The inner guide block (204) has a spiral hole located between the first rolling groove and the second rolling groove. The adjusting rod (206) is located inside the spiral hole.

5. The dual-guide rail electrode guiding device for an EDM machine tool according to claim 4, characterized in that, The guide plate (207) has a limiting groove (2071) at its front end, and the guide block (203) has a limiting slider (205) at its rear end. The limiting slider (205) is slidably installed in the limiting groove (2071).

6. The dual-guide rail electrode guiding device for an EDM machine tool according to claim 5, characterized in that, The mounting bracket (101) has a fixing plate (401) at its front end, and a hydraulic device (402) is provided at the upper end of the fixing plate (401). An electric discharge machine head (403) is installed at the end of the hydraulic rod of the hydraulic device (402). A connecting rod (404) is provided at the side end of the guide block (203), and the end of the connecting rod (404) is connected to the electric discharge machine head (403).

7. A dual-guide rail electrode guiding device for an EDM machine tool according to claim 6, characterized in that, The protective cover tube (301) encloses the guide rod (202), the adjusting rod (206), and the guide plate (207). The protective cover tube (301) is corrugated along its long axis and is made of rubber. The protective cover tube (301) includes a large tube section (302) and a small tube section (303). The guide rod (202) and the adjusting rod (206) are located inside the small tube section (303), and the guide plate (207) is located inside the large tube section (302).

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