Long-strip-shaped tungsten steel linear cutting guide wheel shaft power feeding mechanism

Abstract

The utility model discloses a tungsten steel strip type linear cutting guide wheel shaft power feeding mechanism, which relates to the technical field of linear cutting and comprises a guide wheel shaft, and a power feeding mechanism is arranged on the surface of the guide wheel shaft. According to the utility model, current is conducted to the guide wheel shaft through the tungsten steel connecting column, and when in use, the tungsten steel tip, the tungsten steel strip and the elastic ejector rod are superposed in a line, so that a current contact point can be changed into three contact points of the guide wheel shaft and the tungsten steel tip, the tungsten steel tip and the tungsten steel strip, and the tungsten steel strip and the elastic ejector rod from one contact point of the tungsten steel tip and the tungsten steel strip; meanwhile, when power is fed through the left power feeding mechanism and the right power feeding mechanism at the same time, when one side has a gap and the other side is in good contact, the good-contact side can effectively intercept the high-frequency positive current of a workpiece, so that the side with the gap does not generate sparks, and the stability of the device is improved; and the adaptability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of wire EDM technology, specifically to a tungsten steel long strip-shaped wire EDM guide wheel shaft power supply mechanism. Background Technology

[0002] Wire EDM is short for wire cutting, referring to a machining method. It was developed based on electrical discharge machining (EDM) for drilling and forming. It uses a moving metal wire as an electrode, and relies on pulsed electric spark discharge between the electrode wire and the workpiece to generate high temperature, which melts or vaporizes the metal, forming a kerf, thereby cutting out the part.

[0003] Patent publication number CN218426062U discloses a wire cutting guide wheel structure, including a mounting sleeve, bearings, and a guide wheel. The guide wheel has mounting shafts integrally formed at both ends, and bearings are fitted at both ends of the mounting shafts. The bearings are installed in a reserved mounting cavity inside the mounting sleeve. A guide ring is integrally formed at one end of the mounting sleeve near the guide wheel. The end of the guide ring near the guide wheel is flush with the outer circumferential surface of the guide wheel. A push block is installed inside the mounting sleeve on the side of the bearing near the guide wheel.

[0004] To address the issue of facilitating wire threading, existing technology involves removing the sealing sleeve and nut, then taking out the guide wheel. At this point, rotating the threaded rod inward causes it to press down on the wedge block, moving it towards the bearing side. The wedge block then drives the push block to push the bearing outward, facilitating bearing disassembly. The inclined arc surface of the guide ring also allows the cutting wire to slide easily into the guide wheel. However, this method suffers from the problem of electrical sparks generated when there is a gap in the wire EDM guide wheel shaft's power connection. These sparks can melt the connection, preventing power from entering and causing the device to malfunction. Utility Model Content

[0005] The purpose of this invention is to provide a tungsten steel strip-shaped wire-cut guide wheel shaft power supply mechanism to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A tungsten steel strip-shaped wire cutting guide wheel shaft power supply mechanism includes a guide wheel shaft, and the surface of the guide wheel shaft is provided with a power supply mechanism.

[0008] The power supply mechanism includes a main body, which is movably mounted on the surface of the guide wheel shaft. Two sets of main bodies are provided, symmetrically distributed on the surface of the guide wheel shaft. Elastic washers are fixedly installed on the surface of the main body, and the diameter of the elastic washers is adapted to the guide wheel shaft. A storage groove is provided on the surface of the main body, and a tungsten steel strip is movably installed inside the storage groove.

[0009] A further improvement of this utility model is that a high-frequency negative terminal is fixedly installed at one end of the tungsten steel strip, and a high-frequency negative wire is fixedly installed on the surface of the high-frequency negative terminal.

[0010] A further improvement of this utility model is that: two high-frequency negative connection wires are fixedly installed on the surface of the high-frequency negative terminal, and a tungsten steel strip is fixedly installed on one end of the two high-frequency negative connection wires.

[0011] A further improvement of the present invention is that the power supply mechanism further includes a tungsten steel connecting column, which is fixedly installed inside the main body of the mechanism. A tungsten steel tip is fixedly installed at one end of the tungsten steel connecting column, and the tungsten steel tip extends into the interior of the storage slot and is movably connected to the tungsten steel strip.

[0012] A further improvement of this utility model is that: a spring-loaded push rod is movably installed inside the main body of the mechanism, one end of the spring-loaded push rod is movably installed on the surface of a tungsten steel strip, a spring is sleeved on the surface of the spring-loaded push rod, and the spring is movably installed inside the main body of the mechanism.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] This utility model provides a tungsten steel strip-shaped wire EDM guide wheel shaft power supply mechanism. It employs a guide wheel shaft high-frequency negative wire, high-frequency negative wire terminal, mechanism body, high-frequency negative wires at both ends, elastic washers, tungsten steel connecting posts, elastic push rods, springs, tungsten steel strips, tungsten steel tips, and a storage slot. The guide wheel shaft is mounted on the surface of the power supply mechanism. Elastic washers are placed between the guide wheel shaft and the mechanism body to prevent coolant from entering the power supply mechanism and causing damage. The tungsten steel strip is inserted into the storage slot on the surface of the mechanism body, so that the tungsten steel tips on the surface of the tungsten steel connecting posts contact the tungsten steel strip. The spring pushes the elastic push rod, which, in conjunction with the tungsten steel tips, fixes the tungsten steel strip. The high-frequency negative wire connects to the power supply and conducts electricity to the two sets of tungsten steel strips through the high-frequency negative wire terminal and the high-frequency negative wires at both ends. The current is then conducted to the guide wheel shaft through the tungsten steel connecting posts. In use, the tungsten steel tips, tungsten steel strips, and elastic push rods... The superposition of three components on a single line transforms the current contact point from a single point between the tungsten carbide tip and the tungsten carbide strip into three points: between the guide wheel shaft and the tungsten carbide tip, between the tungsten carbide tip and the tungsten carbide strip, and between the tungsten carbide strip and the elastic push rod. This disperses the vibration gap as much as possible, reducing the spark gap between the tungsten carbide tip and the tungsten carbide strip to less than three times, resulting in a more stable cutting current and extending the device's lifespan. Simultaneously, when energized by the two left and right energizing mechanisms, if one side has a gap while the other side has good contact, the side with good contact can effectively intercept the high-frequency positive current from the workpiece, preventing spark generation on the side with the gap, further reducing gap sparks and improving device stability. The tungsten carbide strip is the most easily worn part. After wear, simply pushing the tungsten carbide strip by about two millimeters pushes the damaged contact point away from the tungsten carbide tip, allowing the good part of the tungsten carbide strip to replace the damaged one, effectively restoring the mechanism and improving the device's adaptability. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the power supply mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the tungsten carbide tip of this utility model;

[0018] Figure 4 This is a schematic diagram of the elastic push rod of this utility model.

[0019] In the diagram: 1. Guide wheel shaft; 2. Power supply mechanism; 201. High-frequency negative connection wire; 202. High-frequency negative connection terminal; 203. Main body of the mechanism; 204. High-frequency negative connection wires at both ends; 205. Elastic washer; 206. Tungsten carbide connecting column; 207. Elastic push rod; 208. Spring; 209. Tungsten carbide strip; 210. Tungsten carbide tip; 211. Storage slot. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to embodiments:

[0021] Example 1

[0022] like Figure 1-4 As shown, this utility model provides a tungsten steel long strip-shaped wire EDM guide wheel shaft power supply mechanism, including a guide wheel shaft 1. A power supply mechanism 2 is provided on the surface of the guide wheel shaft 1. The power supply mechanism 2 includes a mechanism body 203, which is movably mounted on the surface of the guide wheel shaft 1. Two sets of mechanism bodies 203 are symmetrically distributed on the surface of the guide wheel shaft 1. Elastic washers 205 are fixedly installed on the surface of the mechanism body 203, with the diameter of the elastic washers 205 matching that of the guide wheel shaft 1. A storage groove 211 is provided on the surface of the mechanism body 203. A tungsten steel long strip 209 is movably installed inside the storage groove 211. A high-frequency negative terminal 202 is fixedly installed at one end of the tungsten steel long strip 209. A high-frequency... The surface of the negative terminal 201 and the high-frequency negative terminal 202 is fixedly mounted with two high-frequency negative connecting wires 204 at both ends. One end of the two high-frequency negative connecting wires 204 is fixedly mounted with a tungsten steel strip 209. The power supply mechanism 2 also includes a tungsten steel connecting post 206, which is fixedly installed inside the main body 203 of the mechanism. One end of the tungsten steel connecting post 206 is fixedly mounted with a tungsten steel tip 210, which extends into the storage slot 211 and is movably connected to the tungsten steel strip 209. A spring-loaded push rod 207 is movably installed inside the main body 203 of the mechanism. One end of the spring-loaded push rod 207 is movably installed on the surface of the tungsten steel strip 209, and a spring 208 is sleeved on the surface of the spring-loaded push rod 207. The spring 208 is movably installed inside the main body 203 of the mechanism.

[0023] In this embodiment, a guide wheel shaft 1 is mounted on the surface of the power supply mechanism 2. A spring washer 205 is provided between the guide wheel shaft 1 and the main body 203 of the mechanism. When in use, the spring washer 205 can prevent coolant from entering the power supply mechanism 2 and avoid damage to the power supply mechanism 2. The tungsten steel strip 209 is inserted into the storage groove 211 on the surface of the main body 203 of the mechanism, so that the tungsten steel tip 210 on the surface of the tungsten steel connecting column 206 contacts the tungsten steel strip 209. The spring 208 pushes the spring rod 2. 07. The tungsten carbide tip 210 is used to fix the tungsten carbide strip 209. The high-frequency negative terminal 201 is connected to the power supply, and conducts electricity to the two sets of tungsten carbide strips 209 through the high-frequency negative terminal 202 and the high-frequency negative connection wires 204 at both ends. The current is conducted to the guide wheel shaft 1 through the tungsten carbide connecting post 206. When in use, the tungsten carbide tip 210, the tungsten carbide strip 209, and the elastic push rod 207 are stacked in a line, which allows the current contact point to flow from the tungsten carbide tip 210 and the tungsten carbide strip 209. One contact point is transformed into three contact points: the guide wheel shaft 1 and the tungsten carbide tip 210, the tungsten carbide tip 210 and the tungsten carbide strip 209, and the tungsten carbide strip 209 and the elastic push rod 207. This disperses the vibration gap as much as possible, reducing the spark gap between the tungsten carbide tip 210 and the tungsten carbide strip 209 to less than three times, making the cutting current more stable and extending the service life of the device. At the same time, when the two power input mechanisms 2 on the left and right are simultaneously powered, if there is a gap on one side and good contact on the other, the side with good contact can effectively intercept the high-frequency positive current of the workpiece, preventing sparks from being generated on the side with the gap, further reducing gap sparks and improving the stability of the device. The tungsten carbide strip 209 is the most easily worn part. After the tungsten carbide strip 209 is worn, simply pushing the tungsten carbide strip 209 about two millimeters away from the tungsten carbide tip 210 and replacing the damaged position with a good position of the tungsten carbide strip 209 can make the mechanism look brand new and improve the adaptability of the device.

[0024] The working principle of this tungsten steel long strip wire cutting guide wheel shaft power supply mechanism will be explained in detail below.

[0025] like Figure 1-4As shown, the guide wheel shaft 1 is mounted on the surface of the power supply mechanism 2. A spring washer 205 is provided between the guide wheel shaft 1 and the main body 203 of the mechanism. When in use, the spring washer 205 can prevent coolant from entering the power supply mechanism 2 and avoid damage to the power supply mechanism 2. The tungsten steel strip 209 is inserted into the storage groove 211 on the surface of the main body 203 of the mechanism, so that the tungsten steel tip 210 on the surface of the tungsten steel connecting column 206 contacts the tungsten steel strip 209. The spring 208 pushes the spring rod 207 to engage with the power supply mechanism 209. The tungsten carbide tip 210 fixes the tungsten carbide strip 209. The high-frequency negative terminal 201 connects to the power supply and conducts electricity to the two sets of tungsten carbide strips 209 through the high-frequency negative terminal 202 and the two high-frequency negative connection lines 204 at both ends. The current is then conducted to the guide wheel shaft 1 through the tungsten carbide connecting post 206. In use, the tungsten carbide tip 210, tungsten carbide strip 209, and elastic push rod 207 are stacked in a line, allowing the current contact point to be connected from one of the tungsten carbide tip 210 and the tungsten carbide strip 209. The contact points are divided into three points: the guide wheel shaft 1 and the tungsten carbide tip 210, the tungsten carbide tip 210 and the tungsten carbide strip 209, and the tungsten carbide strip 209 and the elastic push rod 207. This disperses the vibration gap as much as possible, reducing the spark gap between the tungsten carbide tip 210 and the tungsten carbide strip 209 to less than three times, making the cutting current more stable and improving the service life of the device. At the same time, when the two power input mechanisms 2 on the left and right are simultaneously powered, if there is a gap on one side and good contact on the other, the side with good contact can effectively intercept the high-frequency positive current of the workpiece, preventing sparks from being generated on the side with the gap, further reducing the gap sparks and improving the stability of the device. The tungsten carbide strip 209 is the most easily worn part. After the tungsten carbide strip 209 is worn, simply push the tungsten carbide strip 209 about two millimeters to push the damaged contact point away from the tungsten carbide tip 210, and replace the damaged position with the good position of the tungsten carbide strip 209, which can make the mechanism look brand new and improve the adaptability of the device.

[0026] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A tungsten steel elongated wire cutting guide wheel shaft power supply mechanism, comprising a guide wheel shaft (1), characterized in that: The surface of the guide wheel shaft (1) is provided with an electric input mechanism (2); The power supply mechanism (2) includes a main body (203), which is movably mounted on the surface of the guide wheel shaft (1). Two sets of main bodies (203) are provided, which are symmetrically distributed on the surface of the guide wheel shaft (1). An elastic washer (205) is fixedly installed on the surface of the main body (203). The diameter of the elastic washer (205) is adapted to the guide wheel shaft (1). A storage groove (211) is provided on the surface of the main body (203). A tungsten steel strip (209) is movably installed inside the storage groove (211).

2. The tungsten steel strip-shaped wire cutting guide wheel shaft power supply mechanism according to claim 1, characterized in that: A high-frequency negative terminal (202) is fixedly installed at one end of the tungsten steel strip (209), and a high-frequency negative wire (201) is fixedly installed on the surface of the high-frequency negative terminal (202).

3. The tungsten steel strip-shaped wire cutting guide wheel shaft power supply mechanism according to claim 2, characterized in that: The surface of the high-frequency negative terminal (202) is fixedly mounted with two high-frequency negative connecting wires (204), and a tungsten steel strip (209) is fixedly mounted at one end of the two high-frequency negative connecting wires (204).

4. The tungsten steel strip-shaped wire cutting guide wheel shaft power supply mechanism according to claim 1, characterized in that: The power supply mechanism (2) also includes a tungsten steel connecting column (206), which is fixedly installed inside the main body (203) of the mechanism. A tungsten steel tip (210) is fixedly installed at one end of the tungsten steel connecting column (206), which extends into the storage slot (211) and is movably connected to the tungsten steel strip (209).

5. The tungsten steel strip-shaped wire cutting guide wheel shaft power supply mechanism according to claim 1, characterized in that: A spring rod (207) is movably installed inside the main body (203) of the mechanism. One end of the spring rod (207) is movably installed on the surface of a tungsten steel strip (209). A spring (208) is sleeved on the surface of the spring rod (207). The spring (208) is movably installed inside the main body (203) of the mechanism.

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