Inclined small hole electric spark machining device

Abstract

The utility model discloses an inclined small hole electric spark machining device, and particularly relates to the technical field of mechanical engineering electric spark machining, the inclined small hole electric spark machining device comprises a device outer frame, a long small hole electrode is installed in the middle of the device outer frame in a lifting mode, and a positioning piece is arranged at the bottom of the long small hole electrode. A mounting longitudinal frame is fixedly mounted on one side of the bottom end of the device outer frame, and a mounting part is arranged at the bottom end of the mounting longitudinal frame; the positioning piece comprises a positioning top frame, a positioning penetrating groove is formed in the middle of the positioning top frame, and a plurality of positioning balls distributed in an annular array mode are arranged in the middle of the positioning penetrating groove. And when the long small-hole electrode is used for advancing and deep machining towards the interior of the workpiece subsequently, the long small-hole electrode is positioned through the positioning balls, the stability of the long small-hole electrode in the advancing and deep machining process is improved, and the machining quality of inclined small-hole electric sparks is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical discharge machining technology in mechanical engineering, specifically to an oblique small hole electrical discharge machining device. Background Technology

[0002] The oblique small hole EDM device is an EDM device used to process oblique small holes on the surface of workpieces. It is mainly used in mold manufacturing, precision parts processing and other fields, and can achieve high-precision and complex-angle small hole processing.

[0003] Traditional oblique pinhole EDM devices typically achieve this by adjusting the angle of the hollow pinhole electrode or the workpiece angle. However, when machining oblique pinholes on thicker workpieces, a hollow pinhole electrode of a certain length needs to be advanced deeper into the workpiece. Because of the electrode's length, the end is prone to bending during this process due to a lack of stability, affecting the machining quality. Therefore, we propose an oblique pinhole EDM device to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide an oblique small hole electrical discharge machining device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for oblique small hole electrical discharge machining, comprising a device frame, an elongated small hole electrode being mounted in a lifting manner in the middle of the device frame, a positioning component being provided at the bottom of the elongated small hole electrode, and a mounting frame being fixedly mounted on one side of the bottom end of the device frame, with a mounting component being provided at the bottom end of the mounting frame.

[0006] The positioning component includes a positioning top frame, a positioning through groove in the middle of the positioning top frame, and a plurality of positioning balls arranged in a circular array in the middle of the positioning through groove, the positioning balls being rolled and engaged in the positioning top frame.

[0007] An infusion bottom frame is fixedly installed at the bottom of the positioning top frame. A longitudinal through groove is provided in the middle of the infusion bottom frame, and multiple spray grooves are evenly distributed at the bottom of the longitudinal through groove.

[0008] Preferably, the elongated small-hole electrode extends through the middle of the positioning groove, and the outer wall of the elongated small-hole electrode contacts the outer surface of the positioning ball.

[0009] Preferably, the elongated small-hole electrode extends through the middle of the longitudinal groove.

[0010] Preferably, the mounting component includes a first mounting frame, which is fixedly mounted on the bottom end of the mounting longitudinal frame. A second mounting frame is provided on the side of the first mounting frame away from the mounting longitudinal frame. Fixing bolts are threaded onto both sides of the first and second mounting frames. The positioning top frame is movably engaged between the first and second mounting frames.

[0011] Preferably, the outer side of the positioning top frame is integrally formed with a positioning protrusion, and the inner wall of the first mounting frame is provided with a positioning slot corresponding to the positioning protrusion, and the positioning protrusion is movably engaged in the corresponding positioning slot.

[0012] Preferably, a connecting tube is integrally formed on the outer side of the infusion base frame, and a connector is fixedly clamped in the connecting tube.

[0013] Preferably, a liquid guide tube is fixedly installed at the end of the connector, and the liquid guide tube movably passes through the bottom of the mounting frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. By setting a positioning component, the end of the elongated small hole electrode is positioned and guided. When the elongated small hole electrode is used to advance and penetrate into the workpiece for further machining, the positioning ball positions the elongated small hole electrode, which increases the stability of the elongated small hole electrode during the forward and in-depth machining and improves the machining quality of the oblique small hole EDM.

[0016] 2. By setting up positioning components, during oblique small-hole EDM, the cutting fluid can be evenly sprayed out through multiple spray channels, sprayed onto the surface of the elongated small-hole electrode, and flow into the workpiece along the surface of the elongated small-hole electrode for cooling, preventing the workpiece and electrode from overheating and avoiding deformation or damage. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram showing the structural connection between the positioning component and the mounting component in this utility model.

[0020] Figure 3 This is a schematic diagram of the positioning top frame in this utility model.

[0021] Figure 4 This is a schematic diagram of the infusion base frame in this utility model.

[0022] In the diagram: 1. Outer frame of the device; 2. Long-shaped small-hole electrode; 3. Positioning component; 4. Mounting longitudinal frame; 5. Mounting component; 31. Positioning top frame; 311. Positioning protrusion; 32. Positioning ball; 301. Positioning through groove; 33. Infusion bottom frame; 302. Longitudinal through groove; 303. Spray groove; 34. Connecting pipe; 35. Connector; 36. Liquid guide pipe; 51. First mounting frame; 52. Second mounting frame; 53. Fixing bolt; 501. Positioning slot. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example: Figure 1-4 As shown, this utility model provides an inclined small hole electrical discharge machining device, including an outer frame 1, a long small hole electrode 2 is lifted and installed in the middle of the outer frame 1, a positioning component 3 is provided at the bottom of the long small hole electrode 2, and a mounting frame 4 is fixedly installed on one side of the bottom end of the outer frame 1, and a mounting component 5 is provided at the bottom end of the mounting frame 4.

[0025] The positioning component 3 includes a positioning top frame 31, with a positioning through groove 301 in the middle. Multiple positioning balls 32 arranged in a circular array are located in the middle of the positioning through groove 301, and the positioning balls 32 are rolled and engaged within the positioning top frame 31. An elongated small-hole electrode 2 movably passes through the middle of the positioning through groove 301, with its outer wall in contact with the outer surface of the positioning balls 32. By providing a positioning top frame 31 with positioning balls 32, during use, the elongated small-hole electrode 2 is movably passed through the middle of the positioning through groove 301, and its outer wall contacts the outer surface of the positioning balls 32, thus positioning and guiding the end of the elongated small-hole electrode 2. When the elongated small-hole electrode 2 is subsequently used for in-depth machining into the workpiece, the positioning balls 32 position the elongated small-hole electrode 2, increasing the stability of the elongated small-hole electrode 2 during in-depth machining and improving the machining quality of the oblique small-hole EDM.

[0026] An infusion base frame 33 is fixedly installed at the bottom of the positioning top frame 31. A longitudinal through groove 302 is opened in the middle of the infusion base frame 33, and multiple evenly distributed spray grooves 303 are opened at the bottom of the longitudinal through groove 302. An elongated small-hole electrode 2 movably passes through the middle of the longitudinal through groove 302. A connecting pipe 34 is integrally formed on the outside of the infusion base frame 33, and a connector 35 is fixedly clamped in the connecting pipe 34. A liquid guide tube 36 is fixedly installed at the end of the connector 35. The liquid guide tube 36 movably passes through the bottom of the mounting frame 4. In use, the end of the liquid guide tube 36 is... It is connected to the cutting fluid output system, which includes a storage tank for storing cutting fluid and a pump. The output port of the pump is connected to the end of the liquid guide pipe 36. By turning on the pump in the cutting fluid output system, the cutting fluid is introduced into the liquid delivery bottom frame 33 through the liquid guide pipe 36, connector 35 and connecting pipe 34. Then, it is evenly sprayed out through multiple spray slots 303, sprayed on the surface of the elongated small hole electrode 2 and flowed into the workpiece along the surface of the elongated small hole electrode 2 for cooling, preventing the workpiece and electrode from overheating and avoiding deformation or damage.

[0027] Mounting component 5 includes a first mounting frame 51, which is fixedly mounted at the bottom of the mounting frame 4. A second mounting frame 52 is provided on the side of the first mounting frame 51 away from the mounting frame 4. Fixing bolts 53 are threaded onto both sides of the first mounting frame 51 and the second mounting frame 52. The positioning top frame 31 is movably engaged between the first mounting frame 51 and the second mounting frame 52. The outer side of the positioning top frame 31 is integrally formed with a positioning protrusion 311. The inner wall of the first mounting frame 51 is provided with a positioning groove 501 corresponding to the positioning protrusion 311. The positioning protrusion 311 is movably engaged in the corresponding positioning groove 501 for positioning and installation of the positioning top frame 31. This facilitates the removal and replacement of the positioning top frame 31 by disassembling the fixing bolts 53. The replacement of the positioning top frame 31 can adapt to long small hole electrodes 2 with different outer diameters, increasing the flexibility of the entire oblique small hole EDM device.

[0028] Working principle: When in use, connect the end of the liquid guide tube 36 to the cutting fluid output system, wherein the cutting fluid output system includes a storage cylinder for storing cutting fluid and a pump, and connect the output port of the pump to the end of the liquid guide tube 36.

[0029] Subsequently, the positioning top frame 31 adapted to the elongated small hole electrode 2 is positioned and installed between the first mounting frame 51 and the second mounting frame 52.

[0030] Subsequently, the elongated small hole electrode 2 is moved through the middle of the positioning groove 301, and the outer wall of the elongated small hole electrode 2 is brought into contact with the outer surface of the positioning ball 32 to position and guide the end of the elongated small hole electrode 2, and the elongated small hole electrode 2 is moved through the middle of the longitudinal groove 302.

[0031] Subsequently, the workpiece is positioned and installed on an external fixture. The angle of the workpiece is adjusted using the adjustment function of the fixture. Then, the elongated small hole electrode 2 is lowered and advanced into the interior of the workpiece for inclined small hole EDM machining. The positioning ball 32 positions the elongated small hole electrode 2, which increases the stability of the elongated small hole electrode 2 during the advanced machining and improves the machining quality of the inclined small hole EDM.

[0032] During processing, the pump in the cutting fluid output system is turned on, and the cutting fluid is introduced into the fluid delivery bottom frame 33 through the fluid guide pipe 36, connector 35 and connecting pipe 34. Then, it is evenly sprayed out through multiple spray slots 303, sprayed on the surface of the elongated small hole electrode 2 and flowed into the workpiece along the surface of the elongated small hole electrode 2 for cooling, preventing the workpiece and electrode from overheating and avoiding deformation or damage.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for oblique small-hole electrical discharge machining, comprising a device frame (1), characterized in that: The device outer frame (1) is equipped with a long small hole electrode (2) in a lifting manner in the middle. The long small hole electrode (2) is provided with a positioning part (3) at the bottom. The device outer frame (1) is fixedly installed with a mounting frame (4) on one side of the bottom end. The mounting frame (4) is provided with a mounting part (5) at the bottom end. The positioning component (3) includes a positioning top frame (31), a positioning through groove (301) is provided in the middle of the positioning top frame (31), and a plurality of positioning balls (32) arranged in a ring array are provided in the middle of the positioning through groove (301), and the positioning balls (32) are rolled and engaged in the positioning top frame (31). The bottom end of the positioning top frame (31) is fixedly installed with an infusion bottom frame (33), and a longitudinal through groove (302) is provided in the middle of the infusion bottom frame (33). A plurality of spray grooves (303) are evenly distributed at the bottom of the longitudinal through groove (302). The elongated small-hole electrode (2) moves through the middle of the longitudinal groove (302).

2. The oblique small hole electrical discharge machining device according to claim 1, characterized in that: The elongated small hole electrode (2) moves through the middle of the positioning groove (301), and the outer wall of the elongated small hole electrode (2) contacts the outer surface of the positioning ball (32).

3. The oblique small hole electrical discharge machining apparatus according to claim 1, characterized in that: The mounting component (5) includes a first mounting frame (51), which is fixedly mounted on the bottom end of the mounting frame (4). A second mounting frame (52) is provided on the side of the first mounting frame (51) away from the mounting frame (4). Fixing bolts (53) are threaded on both sides of the first mounting frame (51) and the second mounting frame (52). The positioning top frame (31) is movably engaged between the first mounting frame (51) and the second mounting frame (52).

4. The oblique small hole electrical discharge machining device according to claim 3, characterized in that: The outer side of the positioning top frame (31) is integrally formed with a positioning protrusion (311), and the inner wall of the first mounting frame (51) is provided with a positioning slot (501) corresponding to the positioning protrusion (311). The positioning protrusion (311) is movably engaged in the corresponding positioning slot (501).

5. The oblique small hole electrical discharge machining apparatus according to claim 1, characterized in that: The infusion base frame (33) has an integrally formed connecting tube (34) on its outer side, and a connector (35) is fixedly installed in the connecting tube (34).

6. The oblique small hole electrical discharge machining apparatus according to claim 5, characterized in that: The end of the connector (35) is fixedly installed with a liquid guide tube (36), which movably passes through the bottom of the mounting frame (4).

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