An easy-to-maintain, high-precision electrode wire guiding device

Abstract

This invention relates to the field of wire EDM, and more particularly to an easy-to-maintain, high-precision electrode wire guide device. The purpose of this invention is to provide an easy-to-maintain, high-precision electrode wire guide device that improves maintenance speed and efficiency, accelerates rework, and further enhances electrode wire feeding accuracy. The technical implementation of this invention is as follows: An easy-to-maintain, high-precision electrode wire guide device includes a mounting frame, a fixed frame fixedly connected to the mounting frame, a first electric slide rail mounted on the left side of the fixed frame, and a connecting pipe fixedly connected to the lower side of the moving part of the first electric slide rail. This invention, by employing an openable mounting box and a return chamber structure with a maintenance port, and by using the first and second electric slide rails to move the first and second mounting chambers up and down to detach them from the liquid medium, allows electrode wire replacement or component maintenance to be performed directly without draining the working fluid.

Description

Technical Field

[0001] This invention relates to the field of wire cutting, and in particular to an easy-to-maintain, high-precision electrode wire guiding device. Background Technology

[0002] Traditional wire EDM machines suffer from numerous problems with their electrode wire guiding devices, hindering workpiece machining accuracy and equipment maintenance efficiency. For example, current electrode wire guiding devices typically have complex wire threading paths, requiring the drainage of the liquid medium during maintenance or replacement. Furthermore, the confined space within the electrode wire guiding device makes maintenance difficult, cumbersome, time-consuming, and labor-intensive, leading to prolonged processing interruptions. Additionally, the effective machining length of traditional electrode wires is generally fixed or lacks sufficient adjustment precision. When cutting workpieces of varying thicknesses, electrode wire sag or vibration can cause machining deviations, affecting surface finish and dimensional accuracy. Moreover, metal particles generated during wire EDM can disperse in the liquid medium and adhere to the electrode wire surface, infiltrating the guiding device and accelerating wear on both the electrode wire and the guiding device. Frequent replacement of the electrode wire and guiding components further increases costs.

[0003] Therefore, it is necessary to develop an easy-to-maintain, high-precision electrode wire guiding device to solve the above problems. Summary of the Invention

[0004] In order to overcome the shortcomings of current electrode wire guiding devices, such as cumbersome maintenance process, low efficiency, slow resumption speed, and insufficient electrode wire feeding accuracy, the purpose of this invention is to provide an easy-to-maintain, high-precision electrode wire guiding device that improves maintenance speed and efficiency, speeds up resumption of work, and further improves electrode wire feeding accuracy.

[0005] The technical implementation of this invention is as follows: an easy-to-maintain, high-precision electrode wire guiding device, comprising a mounting frame, a fixed frame fixedly connected to the mounting frame, a first electric slide rail mounted on the left side of the fixed frame, a connecting pipe fixedly connected to the lower side of the moving part of the first electric slide rail, a first mounting chamber fixedly connected to the left side of the connecting pipe, a second electric slide rail mounted on the right side of the fixed frame, a displacement frame fixedly connected to the lower side of the moving part of the second electric slide rail, a second mounting chamber fixedly connected to the lower side of the displacement frame, the second mounting chamber and the first mounting chamber being arranged facing each other; a wire return machine is provided below the displacement frame. The structure includes a wire return mechanism fixedly connected to the lower side of the second mounting compartment, which is used for the operation of the closed-loop guide electrode wire; traction mechanisms are provided on both the left and right sides of the upper side of the mounting frame, and the traction mechanisms are arranged facing each other, each used for placing and winding the electrode wire; a tensioning mechanism is provided in the middle of the mounting frame, which is used to monitor and adjust the tension of the electrode wire; guide mechanisms are provided in both the first and second mounting compartments, and the guide mechanisms are arranged facing each other, with the two sets of guide mechanisms used to ensure stable wire feeding at the position between them.

[0006] Preferably, the rewinding mechanism includes a rewinding chamber, which is fixedly connected to the lower side of the second mounting chamber. A rewinding tube is fixedly connected to the lower side wall of the displacement frame. The left side of the rewinding tube is fixedly connected to the right side of the rewinding chamber. The front sides of the rewinding chamber and the rewinding tube are sealed by a detachable front cover structure. A connecting plate is fixedly connected to the rear side wall of the rewinding tube. First guide wheels are installed on both the left and right sides of the connecting plate. A sealing tube is fixedly connected to the right side of the right side wall of the displacement frame.

[0007] Preferably, the traction mechanism includes mounting boxes, and the number of mounting boxes is not unique. The mounting boxes are respectively fixedly connected to the left and right sides of the mounting frame. Each mounting box has a top cover. Each mounting box contains a winding bobbin. Each mounting box has a drive motor installed on its front and rear sides. The winding bobbin is detachably installed on the output shaft of the drive motor in each mounting box. Each mounting box has a second guide wheel installed on its opposite side.

[0008] Preferably, the tensioning mechanism includes an electric push rod, which is fixedly connected to the middle position of the mounting frame. A pressure sensor is installed on the upper end of the moving part of the electric push rod, and a third guide wheel is installed on the upper end of the detection surface of the pressure sensor. A bracket is fixedly connected to the middle of the mounting frame, and a fourth guide wheel is installed on both the left and right sides of the bracket.

[0009] Preferably, the guiding mechanism includes mounting tubes, the number of which is not unique. The mounting tubes are respectively fixedly connected to the interior of the first mounting compartment and the second mounting compartment. The mounting tubes are arranged facing each other, and a guide tube is installed on the opposite side of each mounting tube. The guide tubes are arranged facing each other.

[0010] Preferably, the system further includes a slag-blocking mechanism, which is respectively disposed in the first mounting chamber and the second mounting chamber. The slag-blocking mechanism is used to prevent processing slag contained in the liquid medium from entering the guide tube as the electrode wire moves. The slag-blocking mechanism includes clamping plates, with clamping plates fixedly connected to the left and right sides of the first and second mounting chambers facing each other. Two filter screens that can be closed together are placed between each pair of opposing clamping plates. Each filter screen is detachably installed at the corresponding clamping plate. The two opposing filter screens can be moved forward and backward respectively. The filter screen is inserted into the clamping plate and closed to form a filter ring structure. Each filter screen is fixedly connected to a surrounding plate on one side. Every two surrounding plates facing each other can be closed to form a surrounding ring structure with ports. Both the first and second installation chambers are equipped with a slag discharge assembly, which is used to pump the filtered liquid medium inside the surrounding plates and filter screens that are closed to form the surrounding ring structure and filter ring structure. Both the first and second installation chambers are equipped with a liquid suction assembly, which is connected to the slag discharge assembly and is used to allow the slag discharge assembly to suck up the filtered liquid medium.

[0011] Preferably, the slag discharge assembly includes a first annular pipe, the number of which is not unique. The first annular pipes are fixedly connected to the outer periphery of each of the mounting pipes. Multiple nozzles are fixedly connected to opposite sides of each of the first annular pipes. The nozzles pass through the first mounting chamber and the second mounting chamber in which they are located and extend into the surrounding ring structure formed by adjacent surrounding plates. Liquid pumps are installed on the right side of both the first and second mounting chambers. The discharge ends of the liquid pumps are connected to the adjacent first annular pipes.

[0012] Preferably, the liquid suction assembly includes a second annular tube, the number of which is not unique. The second annular tubes are fixedly connected to the middle of the outer periphery of each of the mounting tubes. Multiple liquid suction tubes are fixedly connected to opposite sides of each of the second annular tubes. The liquid suction tubes pass through the first mounting chamber and the second mounting chamber where they are located and extend into the filter ring structure formed by the adjacent filter screens. A return liquid valve is fixedly connected to each liquid suction tube.

[0013] Compared with the prior art, the present invention has the following advantages: 1. The present invention adopts an openable installation box and a wire return chamber structure with a maintenance port. The first and second electric slide rails drive the first and second installation chambers to move up and down to separate them from the liquid medium. This allows the electrode wire replacement or component maintenance to be performed directly without draining the working fluid. Furthermore, the electrode wire threading path is improved by optimizing the electrode wire through the winding drums on both sides into a unidirectional closed loop. The guide wheel and guide tube form a clear direction, which simplifies the electrode wire maintenance and replacement process, thereby improving maintenance speed and efficiency.

[0014] 2. This invention uses a servo-controlled first and second electric slide rail to independently adjust the distance between the first and second mounting chambers, which can accurately match the thickness of the workpiece, ensuring that the effective processing length of the electrode wire is always in a suitable state, avoiding electrode wire sag or vibration. Furthermore, the tension of the electrode wire is monitored in real time by a pressure sensor, and the electric push rod is dynamically adjusted by a PID algorithm to achieve automatic control and improve the stability of wire EDM.

[0015] 3. This invention employs detachable filter screens and surround plates, which combine to form a filter ring and surround ring to filter processing residues in the liquid medium. The filtered liquid medium, driven by a liquid pump, is sprayed from the nozzle, which not only flushes away the processing residues at the port of the surround ring but also cleans the processing residues adhering to the surface of the electrode wire, further reducing the wear of the guide tube and electrode wire and shortening the maintenance cycle. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the assembled three-dimensional structure of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the mounting bracket portion of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of the fixing frame part of the present invention.

[0020] Figure 5 This is a partial three-dimensional structural diagram of the present invention. Figure 1 .

[0021] Figure 6 This is a partial three-dimensional structural diagram of the present invention. Figure 2 .

[0022] Figure 7 This is a schematic diagram of the partially cut three-dimensional structure of the present invention. Figure 1 .

[0023] Figure 8This is a cross-sectional three-dimensional structural diagram of the first installation compartment portion of the present invention.

[0024] Figure 9 This is a cross-sectional three-dimensional structural diagram of the second mounting compartment portion of the present invention.

[0025] Figure 10 This is a three-dimensional structural diagram of the rewinding mechanism of the present invention.

[0026] Figure 11 This is a partial three-dimensional structural diagram of the present invention. Figure 3 .

[0027] Figure 12 This is a schematic diagram of the partially cut three-dimensional structure of the present invention. Figure 2 .

[0028] Figure 13 This is a partial three-dimensional structural diagram of the slag-blocking mechanism of the present invention. Figure 1 .

[0029] Figure 14 This is a partial three-dimensional structural diagram of the slag-blocking mechanism of the present invention. Figure 2 .

[0030] Figure 15 This is a partial three-dimensional structural diagram of the slag-blocking mechanism of the present invention. Figure 3 .

[0031] Figure 16 This is a partial three-dimensional structural diagram of the slag-blocking mechanism of the present invention. Figure 4 .

[0032] Figure 17 This is a three-dimensional structural diagram of the traction mechanism of the present invention. Figure 1 .

[0033] Figure 18 This is a three-dimensional structural diagram of the traction mechanism of the present invention. Figure 2 .

[0034] Wherein: 1: Mounting frame, 2: Fixing frame, 3: First electric slide rail, 4: Connecting pipe, 5: First mounting compartment, 6: Second electric slide rail, 7: Displacement frame, 8: Second mounting compartment, 9: Wire return mechanism, 10: Traction mechanism, 11: Tensioning mechanism, 12: Guide mechanism, 91: Wire return compartment, 92: Wire return pipe, 93: Connecting plate, 94: First guide wheel, 95: Sealing pipe, 101: Mounting box, 102: Winding drum, 103: Drive motor, 104: Second guide wheel 111: Electric push rod; 112: Pressure sensor; 113: Third guide wheel; 114: Bracket; 115: Fourth guide wheel; 121: Mounting tube; 122: Guide tube; 13: Slag blocking mechanism; 131: Clamping plate; 132: Filter screen; 134: Surrounding plate; 14: Slag discharge assembly; 15: Liquid suction assembly; 141: First annular tube; 142: Spray pipe; 143: Liquid pump; 151: Second annular tube; 152: Liquid suction pipe; 153: Return liquid valve. Detailed Implementation

[0035] Example 1, such as Figures 1-9As shown, an easy-to-maintain, high-precision electrode wire guiding device includes a mounting frame 1, a fixing frame 2, a first electric slide rail 3, a connecting pipe 4, a first mounting chamber 5, a second electric slide rail 6, a displacement frame 7, a second mounting chamber 8, a wire return mechanism 9, a traction mechanism 10, a tensioning mechanism 11, and a guiding mechanism 12. The mounting frame 1 is a horizontal frame structure, with external mounting bases on both its left and right sides. The mounting frame 1 is used to install on the planar movement device of the wire EDM unit, allowing it to move left, right, and forward and backward via the planar movement device. A fixing frame 2 is fixedly connected to the right side of the center of the mounting frame 1. The fixing frame 2 is a vertical frame structure, and a first electric slide rail 6 is mounted on the left side of the fixing frame 2. The first electric slide rail 3 is a vertical precision track pair controlled by a servo system. A connecting pipe 4 is fixedly connected to the lower side of the moving part of the first electric slide rail 3. A first mounting compartment 5 is fixedly connected to the left side of the connecting pipe 4. The first mounting compartment 5 is a compartment structure with circular openings on both the top and bottom sides. A second electric slide rail 6 is installed on the right side of the fixing frame 2. The second electric slide rail 6 is a vertical precision track pair controlled by a servo system. A displacement frame 7 is fixedly connected to the lower side of the moving part of the second electric slide rail 6. The displacement frame 7 is an inverted L-shaped structure. A second mounting compartment 8 is fixedly connected to the left side of the lower structure of the displacement frame 7. The second mounting compartment 8 is a compartment structure with circular openings on both the top and bottom sides. The second mounting compartment 8 and the first mounting compartment 5 are arranged facing each other. The mounting compartment 8 is located directly below the first mounting compartment 5. The centers of the circular opening structures of the second mounting compartment 8 and the first mounting compartment 5 are on the same vertical line. A wire return mechanism 9 is provided under the displacement frame 7. The wire return mechanism 9 is fixedly connected to the lower side of the second mounting compartment 8. The wire return mechanism 9 is used for the operation of the closed-loop guide electrode wire. Traction mechanisms 10 are provided on both the left and right sides of the upper side of the mounting frame 1. The traction mechanisms 10 are arranged facing each other. The traction mechanisms 10 are used to place and wind the electrode wire. A tensioning mechanism 11 is provided in the middle of the mounting frame 1. The tensioning mechanism 11 is used to monitor and adjust the tension of the electrode wire. A guide mechanism 12 is provided in both the first mounting compartment 5 and the second mounting compartment 8. The guide mechanism 12 passes through the first mounting compartment 5 and the second mounting compartment 8 respectively. At the circular opening of the second mounting compartment 8, the guide mechanisms 12 are arranged facing each other. The two sets of guide mechanisms 12 are used to stably guide the electrode wire at the position between them. One end of the electrode wire can be connected to the traction mechanism 10 located on the left, and the other end of the electrode wire can be passed through the tensioning mechanism 11 into the first mounting compartment 5 and its connected guide mechanism 12. Then the electrode wire is passed through the second mounting compartment 8 and its connected guide mechanism 12. After that, the electrode wire is passed through the return wire mechanism 9, and finally the electrode wire is connected to the traction mechanism 10 located on the right. By controlling the traction mechanism 10, the traction mechanism 10 can drive the electrode wire to move, which is the wire feeding. In this way, the beginning and end of the electrode wire can be disconnected to form the wire feeding path.

[0036] like Figure 10As shown, the rewinding mechanism 9 includes a rewinding chamber 91, a rewinding tube 92, a connecting plate 93, a first guide wheel 94, and a closed tube 95. The rewinding chamber 91 is fixedly connected to the lower side of the second mounting chamber 8. The rewinding chamber 91 is a chamber structure with an opening on the upper side. The front side of the rewinding chamber 91 has a maintenance port. The rewinding tube 92 is fixedly connected to the lower side wall of the displacement frame 7. The rewinding tube 92 has an open structure on the left side and a structure with a circular hole on the upper right side. The rewinding tube 92 has a maintenance port on the front side. The left side of the rewinding tube 92 is fixedly connected to the right side of the rewinding chamber 91. The open structure on the left side of the rewinding tube 92 communicates with the front maintenance port structure of the rewinding chamber 91. The front maintenance port structure of the wire chamber 91 and the wire return tube 92 is sealed by a detachable front cover structure to maintain the airtightness of the internal space of the wire return chamber 91 and the wire return tube 92, and to prevent the liquid medium from seeping into the wire return chamber 91 and the wire return tube 92 when the second installation chamber 8 is in the liquid medium. A connecting plate 93 is fixedly connected to the inner rear side wall of the wire return tube 92. First guide wheels 94 are installed on both the left and right sides of the connecting plate 93. The first guide wheels 94 are used to guide the electrode wire. A closed tube 95 is fixedly connected to the right side of the right side wall of the displacement frame 7. The closed tube 95 is a pipe structure with openings at the top and bottom. The lower opening structure of the closed tube 95 is interconnected with the circular hole structure on the upper right side of the wire return tube 92.

[0037] like Figures 17-18 As shown, the traction mechanism 10 includes a mounting box 101, a winding drum 102, a drive motor 103, and a second guide wheel 104. There are two mounting boxes 101, which are fixedly connected to the left and right sides of the mounting frame 1. Both mounting boxes 101 have an open upper structure and a cover plate to close their open upper structure. Both mounting boxes 101 have wire outlet holes on opposite sides. The winding drum 102 is placed inside each mounting box 101. The drive motor 103 is installed on the front and rear sides of both mounting boxes 101. The output shaft of the drive motor 103 on the front and rear sides of each mounting box 101 passes through its front and rear inner walls. The winding drum 102 is detachably installed between the output shafts of the drive motor 103 in each mounting box 101. The drive motor 103 is a self-locking geared motor controlled by a servo system. The second guide wheel 104 is installed on opposite sides of each mounting box 101.

[0038] like Figure 17As shown, the tensioning mechanism 11 includes an electric push rod 111, a pressure sensor 112, a third guide wheel 113, a bracket 114, and a fourth guide wheel 115. The electric push rod 111 is fixedly connected to the middle of the mounting frame 1, slightly to the left. The electric push rod 111 is located to the right of the mounting box 101 on the left. The electric push rod 111 is a vertically moving pair controlled by a servo system. The moving part of the electric push rod 111 faces upward. The pressure sensor 112 is installed on the upper end of the moving part of the electric push rod 111. The pressure sensor 112 has a high-precision piezoelectric ceramic structure. The third guide wheel 113 is installed on the upper end of the detection surface of the pressure sensor 112. The bracket 114 is fixedly connected to the middle of the mounting frame 1. The fourth guide wheel 115 is installed on both the left and right sides of the bracket 114.

[0039] like Figures 7-15 As shown, the guiding mechanism 12 includes an installation tube 121 and a guide tube 122. There are two installation tubes 121, both of which are pipe structures. The installation tubes 121 are fixedly connected to the interior of the first installation chamber 5 and the second installation chamber 8, respectively. The installation tubes 121 respectively enclose the upper and lower circular hole structures of the first installation chamber 5 and the second installation chamber 8 where they are located. The installation tubes 121 are arranged facing each other. The facing side of the installation tubes 121 has a threaded hole structure. The facing side of the installation tubes 121 is equipped with a guide tube 122. The guide tubes 122 are arranged facing each other. The guide tubes 122 are both pipe structures. The facing side of the guide tubes 122 has a gemstone guide nozzle structure, and the opposite side of the guide tubes 122 has a threaded ring structure. The guide tubes 122 are installed in the threaded hole structure of the installation tubes 121 through their threaded ring structures. The number of guide tubes 122 and their inner diameters are different.

[0040] like Figures 7-16As shown, it also includes a slag-blocking mechanism 13, which includes a clamping plate 131, a filter screen 132, a surrounding plate 134, a slag discharge assembly 14, and a liquid suction assembly 15. The slag-blocking mechanism 13 is respectively located in the first mounting chamber 5 and the second mounting chamber 8. The slag-blocking mechanism 13 is used to prevent processing slag contained in the liquid medium from entering the guide tube 122 as the electrode wire moves, thereby reducing the processing slag adhering to the surface of the electrode wire after passing through the processing section, and reducing the wear of the electrode wire and its contacting parts. The first mounting chamber 5 and the second mounting chamber 8 face each other on the left side. Both sides are fixedly connected with clamping plates 131. Between each pair of opposite clamping plates 131, two filter screens 132 that can be closed together are placed. Each filter screen 132 can be detachably installed at the corresponding clamping plate 131. The filter screens 132 are all structured with filters. Two front-to-back opposing filter screens 132 can be inserted into the clamping plates 131 in a front-to-back direction to close together to form a filter screen ring structure. Each filter screen 132 is fixedly connected to a surrounding plate 134 on one side facing each other. Each pair of front-to-back opposing surrounding plates 134 can be closed together to form a filter screen ring. The enclosing ring structure with a port, with the enclosing plate 134 and filter plate 132 forming an enclosing ring structure and a filter screen ring structure respectively surrounding the guide tube 122, the electrode wire extends from the port structure of the enclosing ring structure without contacting it; both the first installation chamber 5 and the second installation chamber 8 are equipped with a slag discharge assembly 14, which is used to pump the filtered liquid medium in the enclosing plate 134 and filter plate 132 forming the enclosing ring structure and filter screen ring structure, so that the pumped liquid medium is discharged from the port of the enclosing ring structure, and at the same time flushing the opening. The processing slag seeps into the port of the surrounding ring structure and simultaneously flushes away the processing slag adhering to the surface of the electrode wire that has passed through the processing section, thereby preventing the processing slag from entering the guide tube 122 and causing wear on it, and also preventing the surface of the electrode wire from being worn due to the processing slag entering the guide tube 122, reducing the wear rate of the electrode wire and reducing the maintenance cycle of the electrode wire; both the first installation chamber 5 and the second installation chamber 8 are equipped with liquid suction components 15, which are connected to the slag discharge component 14. The liquid suction component 15 is used to enable the slag discharge component 14 to absorb the filtered liquid medium.

[0041] like Figures 7-16 As shown, the slag discharge assembly 14 includes a first annular pipe 141, a nozzle 142, and a liquid pump 143. There are two first annular pipes 141, which are annular pipe structures. The first annular pipes 141 are fixedly connected to the outer periphery of each mounting pipe 121. Multiple nozzles 142 are fixedly connected to opposite sides of the first annular pipes 141. The nozzles 142 pass through the first mounting chamber 5 and the second mounting chamber 8 where they are located and extend into the surrounding ring structure formed by adjacent surrounding plates 134. Liquid pumps 143 are installed on the right side of the first mounting chamber 5 and the second mounting chamber 8. The discharge end of the liquid pump 143 is connected to the adjacent first annular pipe 141.

[0042] like Figures 7-16 As shown, the liquid suction assembly 15 includes a second annular tube 151, a suction tube 152, and a return pipe valve 153. There are two second annular tubes 151, each with a ring-shaped pipe structure. The second annular tubes 151 are fixedly connected to the outer periphery of each mounting tube 121. Multiple suction tubes 152 are fixedly connected to opposite sides of each second annular tube 151. The suction tubes 152 pass through the first mounting chamber 5 and the second mounting chamber 8 respectively, extending into the filter ring structure formed by adjacent filter screens 132. Each suction tube 152 is fixedly connected to... The return pipe valve 153 is an electrically controlled valve. The return pipe valve 153 located in the first installation chamber 5 passes through its upper side wall and enters the connecting pipe 4. The return pipe valve 153 located in the first installation chamber 5 is used to absorb the liquid medium that drips into the connecting pipe 4 as the electrode wire moves upward. The return pipe valve 153 located in the second installation chamber 8 passes through its lower side wall and extends into the return wire chamber 91. The return pipe valve 153 located in the second installation chamber 8 is used to absorb the liquid medium that falls into the return wire chamber 91 as the electrode wire moves downward.

[0043] Example 2, as Figures 1-18 As shown, the assembly method of the easy-to-maintain high-precision electrode wire guide device is as follows: the external base structure of the mounting bracket 1 of the easy-to-maintain high-precision electrode wire guide device is installed at the planar moving device of the wire EDM unit, so that the mounting bracket 1 can be moved in the left and right and forward and backward directions through the planar moving device of the wire EDM unit, and the carbon brush for applying electrical energy is installed at the position below the bracket 114. According to the required electrode wire diameter, the appropriate guide tube 122 is selected and installed at the mounting tube 121 through its thread structure.

[0044] The electrode wire threading process and path of this easy-to-maintain, high-precision electrode wire guiding device are as follows: Open the upper cover structure of the two mounting boxes 101, install a winding spool 102 with electrode wire inside the left mounting box 101, fix the shaft of the winding spool 102 to the output shaft of the drive motor 103 inside the left mounting box 101, and position the electrode wire on the upper side of the left winding spool 102 for winding and unwinding; install an empty winding spool 102 between the output shafts of the drive motor 103 inside the right mounting box 101; then pass the other end of the electrode wire on the winding spool 102 through the wire outlet hole structure of the left mounting box 101, and let the electrode wire pass through the left... The electrode wire is guided by the second guide wheel 104 on the side and positioned below it. Then, the electrode wire is guided by the third guide wheel 113 on the side and positioned above it. Next, the electrode wire is guided by the fourth guide wheel 115 on the left side and positioned below it. Then, the electrode wire is guided by the fourth guide wheel 115 on the right side and positioned above it. Finally, the end of the electrode wire extends downwards from the right side of the fourth guide wheel 115. At this point, the end of the electrode wire can be inserted downwards into the first mounting chamber 5, passing through the mounting tube 121 and guide tube 122 installed inside the first mounting chamber 5 and extending downwards. At this point, the end of the electrode wire can be inserted downwards into the second mounting chamber 8, where the electrode wire will pass through the second... The guide tube 122 and mounting tube 121 installed in the mounting compartment 8 extend downwards into the return wire compartment 91. At this time, the front cover structure of the return wire compartment 91 and the return wire tube 92 can be opened. Continue to operate the electrode wire by guiding it to the left side of the first guide wheel 94 and placing it under its side. Then, guide the electrode wire to the right side of the first guide wheel 94 and place it under its side, extending upwards into the closed tube 95. After the electrode wire extends upwards into the closed tube 95, guide it to the right side of the second guide wheel 104 and place it above its side, then extend it to the right. At this time, the end of the electrode wire is above the right winding drum 102. At this time, the end of the electrode wire can be fixedly connected to the right unloaded winding drum. At the spool 102, the electrode wire is positioned on the upper side of the right spool 102 for winding and exiting. Then, the right drive motor 103 is controlled to rotate the right spool 102 clockwise, causing it to wind the wire and tension the electrode wire as a whole. After the wire is threaded, the upper cover of the mounting box 101 can be closed, and the front cover of the return chamber 91 and the return tube 92 can also be closed. Finally, the carbon brush installed below the bracket 114, which applies electrical energy, contacts the electrode wire extending downward from the right fourth guide wheel 115. In this way, the wire threading process of this easy-to-maintain, high-precision electrode wire guiding device is completed.

[0045] The electrode wire tension adjustment method of this easy-to-maintain, high-precision electrode wire guiding device is as follows: The drive motors 103 on both sides are independently controlled to rotate, causing the electrode wire to be pulled between the winding drums 102 on both sides, thus initially tensioning the electrode wire. During the tensioning process, the pressure sensor 112 monitors the downward pressure applied to the third guide wheel 113 by the electrode wire in real time. After the initial tensioning of the electrode wire is completed, the drive motors 103 on both sides can be stopped. At this time, the operation of the electric push rod 111 can be precisely controlled, causing the electric push rod 111 to move the pressure sensor 112 and the third guide wheel 113 upwards or downwards for fine adjustment. This allows the third guide wheel 113 to adjust the support force on the electrode wire, thereby... The tension of the electrode wire is adjusted by changing the tension of the third guide wheel 113, thereby regulating the pressure applied to the third guide wheel 113 until the pressure reaches the target, thus achieving precise adjustment of the electrode wire tension. The monitoring value of the pressure sensor 112 is set. When the pressure sensor 112 detects a change in the downward pressure, it automatically controls the operation of the electric push rod 111 through a program and PID algorithm until the pressure sensor value reaches the target. This allows for precise control of the electrode wire tension during processing, ensuring the electrode wire remains at a suitable tension and improving the accuracy of the electrode wire when processing the workpiece.

[0046] The operation process of this easy-to-maintain, high-precision electrode wire guide device for wire EDM is as follows: The workpiece is clamped on the left side of the EDM cutting pool, and a liquid medium, such as dielectric fluid, is filled into the EDM cutting pool until it reaches the required machining height for the workpiece. Then, the planar movement device of the wire EDM unit is controlled to move the mounting frame 1 left and right and forward and backward, positioning the first mounting chamber 5, the second mounting chamber 8, and the displacement frame 7 above the right side of the EDM cutting pool. Subsequently, the moving parts of the first electric slide rail 3 and the second electric slide rail 6 are controlled to move the connecting pipe 4 and the displacement frame 7 downwards, causing the first mounting chamber 5 and the second mounting chamber 8 to extend downwards into the cutting pool and be submerged in the liquid. Within the medium, the left drive motor 103 can be controlled to rotate the left winding drum 102 clockwise to release the electrode wire until the second mounting chamber 8 moves downward to the height required for wire EDM of the workpiece. Then, the left drive motor 103 can be stopped, and the tensioning mechanism 11 monitors and adjusts the electrode wire tension. Subsequently, the first electric slide rail 3 can be controlled to adjust the height of the first mounting chamber 5, ensuring it is at the required height for wire EDM of the workpiece. This allows for precise adjustment of the distance between the first mounting chamber 5 and the second mounting chamber 8 based on the workpiece thickness, enabling the two guide tubes 1 installed within the first and second mounting chambers 5 and 8 to... The electrode wire, stably guided between 22, has an effective length suitable for workpiece processing. By adjusting the effective length of the electrode wire through the distance between the first mounting chamber 5 and the second mounting chamber 8, the stable operation of the effective processing section of the electrode wire can be ensured. This avoids the electrode wire deflection and vibration phenomena caused by the difficulty in adjusting the effective length or insufficient adjustment accuracy of traditional electrode wire guiding devices during operation. When the effective processing section of the electrode wire deflects or vibrates, processing errors are easily caused. Adjusting the effective length of the electrode wire can improve processing accuracy. Subsequently, according to the set EDM cutting program, the planar movement device of the EDM wire cutting unit can be controlled to move the mounting frame 1. At the same time, according to the... The wire feed speed for wire EDM of the workpiece is controlled by the left drive motor 103 at a set speed to drive the left winding drum 102 to rotate clockwise to release the electrode wire, and at the same time, the right drive motor 103 at a set speed to drive the right winding drum 102 to rotate clockwise to retract the electrode wire. This causes the electrode wire to move downward between the two guide tubes 122 at a set speed, so that the electrode wire between the two guide tubes 122 performs wire EDM on the workpiece. When the left winding drum 102 is about to finish releasing the electrode wire, the two drive motors 103 can be controlled to run again in opposite directions at a set speed, so that the electrode wire between the two guide tubes 122 moves upward to perform wire EDM on the workpiece.

[0047] The maintenance method for this easy-to-maintain high-precision electrode wire guide device is as follows: When the electrode wire suffers wear and tear during processing, resulting in reduced processing accuracy, or when components in contact with the electrode wire experience wear affecting processing accuracy, or when the electrode wire breaks, requiring in-process maintenance of the electrode wire or its contacting components, the two drive motors 103 on both sides can be stopped. The planar movement device of the wire EDM unit can then be controlled to move the mounting frame 1 to the right, causing the electrode wire to detach from the workpiece. This positions the first mounting chamber 5, the second mounting chamber 8, and the displacement frame 7 on the right side of the cutting pool. Subsequently, the first electric slide rail 3 and the second electric slide rail 6 are controlled to move upwards synchronously, causing the first mounting chamber 5 and the second mounting chamber 8 to move upwards synchronously away from the cutting pool. Once the easy-to-maintain high-precision electrode wire guide device is in operation... After the liquid medium drips onto the surface of the device, the top cover of the mounting boxes 101 on both sides can be opened, and the front cover of the return wire chamber 91 and the return wire tube 92 can be opened simultaneously to maintain the components of this easy-to-maintain high-precision electrode wire guide device. When replacing the electrode wire, the left drive motor 103 can be controlled to run counterclockwise to drive the left winding drum 102 to take in the wire until the right winding drum 102 is about to be unloaded. At this time, the left drive motor 103 can be turned off, and the connection between the electrode wire and the right winding drum 102 can be disconnected. Then, the left drive motor 103 can be turned counterclockwise again to drive the left winding drum 102 to take in the wire until the other end of the electrode wire is wound into the left winding drum 102. At this time, the electrode wire to be replaced is in the easy-to-maintain high-precision electrode wire guide device. The device is removed, and the winding bobbin 102 inside the drive motor 103 output shaft in the left mounting box 101 can be disassembled and replaced with a new winding bobbin 102 with electrode wire. The installation and wire threading are performed as described in the "Electrode Wire Threading Process and Threading Path of the Easy-to-Maintain High-Precision Electrode Wire Guide Device" above, and the tension is adjusted as described in the "Electrode Wire Tension Adjustment Method of the Easy-to-Maintain High-Precision Electrode Wire Guide Device" above. By using the above method to maintain the easy-to-maintain high-precision electrode wire guide device, the first mounting chamber 5 and the second mounting chamber 8 can be separated from the liquid medium for maintenance operations. This allows the maintenance, replacement, and component maintenance of the electrode wire to be performed without the need for liquid medium in the cutting pool. Released by lifting the first mounting chamber 5 and the second mounting chamber 8, maintenance operations can be performed without confined spaces. Compared to traditional electrode wire guiding devices that require the release of liquid media for the electrode wire threading path, and whose electrode wire threading path is complex and difficult to move in confined spaces, this easy-to-maintain, high-precision electrode wire guiding device achieves the goals of simple electrode wire threading path, easy maintenance and replacement of electrode wire, and easy maintenance and replacement of device components, thereby improving the recovery speed of workpiece processing and overall processing efficiency. After maintenance of the electrode wire and device components is completed, the first mounting chamber 5 and the second mounting chamber 8 can be controlled to return to the interrupted processing position as described in the above "Electrical Discharge Wire Cutting Operation Process of the Easy-to-Maintain, High-Precision Electrode Wire Guiding Device".

[0048] The easy-to-maintain, high-precision electrode wire guiding device reduces wear on the electrode wire and its contact parts through the slag-blocking mechanism 13. After the guide tube 122 is installed at the mounting tube 121, each pair of corresponding filter screens 132 and surrounding plates 134 are respectively installed at the clamping plates 131 located in the first mounting chamber 5 and the second mounting chamber 8. The filter rings and surrounding rings formed by the filter screens 132 and surrounding plates 134 respectively surround the two guide tubes 122 on opposite sides, allowing the electrode wire to extend from the port structure of the surrounding ring. During the wire EDM process, the generated slag will be scattered in the liquid medium. At this time, two liquid pumps 143 can be turned on, allowing the two pumps 143 to draw the filtered liquid medium from the filter rings and surrounding rings formed by the adjacent filter screens 132 and surrounding plates 134 through their connected suction pipes 152 and second annular pipes 151, and then draw it out from the nozzle through the first annular pipe 141. The liquid medium, which has been filtered and pressurized by the liquid pump 143, is ejected from the nozzle 142 through its adjacent surrounding ring port structure. This allows the flowing liquid medium to displace any processing slag floating in the liquid medium, preventing it from entering the guide pipe 122. It also removes processing slag adhering to the surface of the electrode wire after it has passed through the processing section, preventing it from entering the guide pipe 122 and causing wear. This reduces the wear rate of the electrode wire and shortens the maintenance cycle. As the liquid medium enters the connecting pipe 4 and the return chamber 91 through the tiny gap between the electrode wire and the guide pipe 122, the liquid pump 143 can discharge the liquid medium from the connecting pipe 4 and the return chamber 91 by opening the return pipe valve 153. During electrode wire maintenance, the filter screen 132 and the surrounding plate 134 can be disassembled for cleaning.

Claims

1. An easy-to-maintain, high-precision electrode wire guiding device, characterized in that: The system includes a mounting frame (1), a fixed frame (2) is fixedly connected to the mounting frame (1), a first electric slide rail (3) is installed on the left side of the fixed frame (2), a connecting pipe (4) is fixedly connected to the lower side of the moving part of the first electric slide rail (3), a first mounting compartment (5) is fixedly connected to the left side of the connecting pipe (4), a second electric slide rail (6) is installed on the right side of the fixed frame (2), a displacement frame (7) is fixedly connected to the lower side of the moving part of the second electric slide rail (6), a second mounting compartment (8) is fixedly connected to the lower side of the displacement frame (7), and the second mounting compartment (8) and the first mounting compartment (5) are arranged facing each other. The displacement frame (7) is provided with a wire return mechanism (9), which is fixedly connected to the lower side of the second mounting chamber (8). The wire return mechanism (9) is used for the operation of the closed guide electrode wire. The mounting bracket (1) is provided with traction mechanisms (10) on both the left and right sides of the upper side. The traction mechanisms (10) are arranged facing each other. The traction mechanisms (10) are used to place and wind electrode wires. The mounting bracket (1) is provided with a tensioning mechanism (11) in the middle, which is used to monitor and adjust the tension of the electrode wire; The first mounting compartment (5) and the second mounting compartment (8) are each provided with a guide mechanism (12). The guide mechanisms (12) are arranged facing each other. The two sets of guide mechanisms (12) are used to make the electrode wire move stably at the position between them. The rewind mechanism (9) includes a rewind chamber (91), which is fixedly connected to the lower side of the second mounting chamber (8). A rewind tube (92) is fixedly connected to the lower side wall of the displacement frame (7). The left side of the rewind tube (92) is fixedly connected to the right side of the rewind chamber (91). The front sides of the rewind chamber (91) and the rewind tube (92) are sealed by a detachable front cover structure. A connecting plate (93) is fixedly connected to the inner rear side wall of the rewind tube (92). First guide wheels (94) are installed on both the left and right sides of the connecting plate (93). A sealing tube (95) is fixedly connected to the right side of the right side wall of the displacement frame (7).

2. The easy-to-maintain, high-precision electrode wire guiding device according to claim 1, characterized in that: The traction mechanism (10) includes a mounting box (101). The number of mounting boxes (101) is not unique. The mounting boxes (101) are fixedly connected to the left and right sides of the mounting frame (1). The mounting boxes (101) are all structured with a top cover plate. A winding bobbin (102) is placed inside each mounting box (101). A drive motor (103) is installed on the front and rear sides of each mounting box (101). The winding bobbin (102) is detachably installed at the output shaft of the drive motor (103) in each mounting box (101). A second guide wheel (104) is installed on the opposite side of each mounting box (101).

3. The easy-to-maintain, high-precision electrode wire guiding device according to claim 2, characterized in that: The tensioning mechanism (11) includes an electric push rod (111), which is fixedly connected to the middle position of the mounting frame (1). A pressure sensor (112) is installed on the upper end of the moving part of the electric push rod (111), and a third guide wheel (113) is installed on the upper end of the detection surface of the pressure sensor (112). A bracket (114) is fixedly connected to the middle of the mounting frame (1), and a fourth guide wheel (115) is installed on both the left and right sides of the bracket (114).

4. The easy-to-maintain, high-precision electrode wire guiding device according to claim 3, characterized in that: The guiding mechanism (12) includes an installation tube (121). The number of installation tubes (121) is not unique. The installation tubes (121) are fixedly connected to the interior of the first installation compartment (5) and the second installation compartment (8). The installation tubes (121) are arranged facing each other. A guide tube (122) is installed on the opposite side of each installation tube (121). The guide tubes (122) are arranged facing each other.

5. The easy-to-maintain, high-precision electrode wire guiding device according to claim 4, characterized in that: It also includes a slag-blocking mechanism (13), which is respectively located in the first installation chamber (5) and the second installation chamber (8). The slag-blocking mechanism (13) is used to prevent the processing slag contained in the liquid medium from entering the guide tube (122) along with the operation of the electrode wire. The slag-blocking mechanism (13) includes clamping plates (131). The first installation chamber (5) and the second installation chamber (8) are fixedly connected to the left and right sides of the opposite side. Two filter screens (132) that can be closed together are placed between each pair of left and right opposite clamping plates (131). Each filter screen (132) can be detachably installed at the corresponding clamping plate (131). The two front-to-back opposite filter screens (132) can be inserted into the corresponding clamping plate in the front-to-back direction. The clamping plate (131) is closed into a filter ring structure. Each filter plate (132) is fixedly connected to a surrounding plate (134) on one side. Each pair of surrounding plates (134) facing each other can be closed into a surrounding ring structure with a port. The first installation chamber (5) and the second installation chamber (8) are both provided with a slag discharge assembly (14). The slag discharge assembly (14) is used to pump the filtered liquid medium in the surrounding plate (134) and the filter plate (132) that are closed into a surrounding ring structure and a filter ring structure. The first installation chamber (5) and the second installation chamber (8) are both provided with a liquid suction assembly (15). The liquid suction assembly (15) is connected to the slag discharge assembly (14). The liquid suction assembly (15) is used to make the slag discharge assembly (14) suck up the filtered liquid medium.

6. The easy-to-maintain, high-precision electrode wire guiding device according to claim 5, characterized in that: The slag discharge assembly (14) includes a first annular tube (141). The number of the first annular tubes (141) is not unique. The first annular tubes (141) are fixedly connected to the outer periphery of each of the mounting tubes (121). Multiple nozzles (142) are fixedly connected to each other on one side of the first annular tubes (141). The nozzles (142) pass through the first mounting chamber (5) and the second mounting chamber (8) where they are located and extend into the surrounding ring structure formed by the adjacent surrounding plates (134). Liquid pumps (143) are installed on the right side of the first mounting chamber (5) and the second mounting chamber (8). The discharge end of the liquid pumps (143) is connected to the adjacent first annular tubes (141).

7. The easy-to-maintain, high-precision electrode wire guiding device according to claim 6, characterized in that: The liquid suction assembly (15) includes a second annular tube (151). The number of the second annular tubes (151) is not unique. The second annular tubes (151) are respectively fixedly connected to the middle of the outer periphery of each of the mounting tubes (121). Multiple liquid suction tubes (152) are fixedly connected to each other on the opposite side of the second annular tubes (151). The liquid suction tubes (152) pass through the first mounting chamber (5) and the second mounting chamber (8) where they are located and extend into the filter ring structure formed by the adjacent filter screens (132). A return pipe valve (153) is fixedly connected to each liquid suction tube (152).

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