Electrode rotating wire feeding mechanism

Abstract

The present invention provides an electrode rotating wire feeding mechanism, which belongs to the field of special processing technology. The mechanism includes a driving mechanism, an electrode processing component, a sliding component, a limiting component and a guiding component; the electrode processing component and the sliding component are both connected to the driving mechanism, and the sliding component and the guiding component are both connected to the limiting component; the electrode processing component includes an electrode wire; the driving mechanism is used to drive the electrode processing component and the sliding component to move along the direction of the workpiece to be processed; the limiting component is used to move a preset distance along the direction of the workpiece to be processed driven by the sliding component, so that the distance between the guiding component and the workpiece to be processed meets a first preset condition; the electrode processing component is used to continue to move along the direction of the workpiece to be processed based on the sliding component until the distance between the electrode wire and the workpiece to be processed meets a second preset condition. The present invention can realize the position positioning of the electrode processing component and the guiding component in the direction of the workpiece to be processed through a driving mechanism, thereby reducing the production cost of the electrode rotating wire feeding mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of special processing, and in particular to an electrode rotating wire feeding mechanism. Background Art

[0002] Special machining is a machining method that uses electrical energy, thermal energy, acoustic energy, light energy, electrochemical energy, etc. to achieve material removal. With the continuous development of science and technology, EDM has been widely used. EDM uses pulse discharge between electrodes to convert electrical energy into thermal energy, so that the metal in the workpiece to be processed is melted and gasified and then discharged to meet the given size and roughness requirements to complete the workpiece processing.

[0003] In the prior art, the structural schematic diagram of the EDM device is as follows Figure 1 As shown, the EDM machining process is as follows: first, the motor of the Z-axis 101 of the machine tool drives the W-axis 102 to descend, and when the guide 106 below the W-axis 102 and the workpiece 104 to be machined reach the set machining distance, the motor of the Z-axis 101 of the machine tool stops; secondly, the workpiece 104 to be machined is fixed on the workbench 103; then, the motor of the W-axis 102 drives the rotating electrode axis 107 to descend, and the electrode wire 105 fixed on the rotating electrode axis 107 descends together with the rotating electrode axis 107, and the electrode wire 105 first passes through the guide 106 until it meets the discharge machining distance with the workpiece 104 to be machined, and the motor of the W-axis 102 stops; finally, the rotating electrode axis 107 drives the electrode wire 105 to rotate, and the EDM starts; during the machining process, the W-axis 102 completes the feeding of the electrode wire 105 to meet the machining requirements.

[0004] However, in the above-mentioned prior art, the movement of the guide 106 and the electrode wire 105 needs to be driven by different motors, which makes the production cost of the EDM equipment relatively high. Summary of the invention

[0005] The invention provides an electrode rotating wire feeding mechanism, which is used to solve the defect of high production cost of electric spark machining equipment in the prior art.

[0006] The present invention provides an electrode rotating wire feeding mechanism, comprising a driving mechanism, an electrode processing assembly, a sliding assembly, a limiting assembly and a guiding assembly; the electrode processing assembly and the sliding assembly are both connected to the driving mechanism, and the sliding assembly and the guiding assembly are both connected to the limiting assembly; the electrode processing assembly comprises an electrode wire;

[0007] The driving mechanism is used to drive the electrode processing assembly and the sliding assembly to move along the direction of the workpiece to be processed;

[0008] The limiting assembly is used to move a preset distance in the direction of the workpiece to be processed under the drive of the sliding assembly, and drive the guide assembly to move, so that the distance between the guide assembly and the workpiece to be processed meets a first preset condition;

[0009] The electrode processing assembly is used to continue to move along the direction of the workpiece to be processed based on the sliding assembly after the limiting assembly moves a preset distance, until the distance between the electrode wire and the workpiece to be processed meets a second preset condition.

[0010] According to an electrode rotating wire feeding mechanism provided by the present invention, the sliding assembly includes a guide rail mounting plate and a guide rail assembly, the guide rail mounting plate is connected to the driving mechanism, and the guide rail assembly is arranged on the guide rail mounting plate.

[0011] According to an electrode rotating wire feeding mechanism provided by the present invention, the limit assembly comprises a sliding member and a limit seat, and the sliding member is connected to the guide rail assembly;

[0012] The sliding member is used for contacting the limiting seat after moving the preset distance along the direction of the workpiece to be processed under the drive of the guide rail assembly.

[0013] According to an electrode rotating wire feeding mechanism provided by the present invention, the limit assembly further includes a connecting member, the sliding member includes a sliding plate and a limit plate, and the limit plate includes a first mounting plate and a second mounting plate connected in an L-shape;

[0014] The sliding plate is connected to the guide rail assembly, the first mounting plate is arranged on the sliding plate, and the second mounting plate is provided with a guide hole; the connecting member passes through the guide hole and is arranged on the second mounting plate;

[0015] In the case where the connecting member is not fixedly connected to the second mounting plate but is fixedly connected to the limit seat, the second mounting plate is used to contact the limit seat after moving the preset distance along the direction of the workpiece under the drive of the guide rail assembly;

[0016] In the case where the connecting member is fixedly connected to the second mounting plate, the connecting member is driven by the guide rail assembly to move the preset distance along the direction of the workpiece to be processed and then contact the limit seat.

[0017] According to an electrode rotating wire feeding mechanism provided by the present invention, a hollow cavity is provided inside the electrode wire, the electrode processing assembly further comprises a rotating assembly and a water pipe connector, the rotating assembly comprises a rotating seat and a rotating shaft arranged on the rotating seat, a first cavity is provided inside the rotating seat, and a second cavity is provided inside the rotating shaft;

[0018] The rotating seat is connected to the driving mechanism, the water pipe connector is arranged on the rotating seat, the electrode wire is connected to the rotating shaft, and the water pipe connector, the first cavity, the second cavity and the hollow cavity are connected in sequence.

[0019] According to an electrode rotating wire feeding mechanism provided by the present invention, the guide assembly includes a guide and a guide mounting assembly, and the guide is arranged at an end of the sliding plate away from the guide rail assembly through the guide mounting assembly.

[0020] According to an electrode rotating wire feeding mechanism provided by the present invention, the guide mounting assembly comprises a first guide mounting plate, a second guide mounting plate, a first spherical body, and at least three first locking members for connecting the first guide mounting plate and the second guide mounting plate, a first gap is provided between the first guide mounting plate and the second guide mounting plate, and the first spherical body is arranged in the first gap;

[0021] The first guide mounting plate is arranged on one end of the sliding plate away from the guide rail assembly, and the guide is arranged on the second guide mounting plate along the direction of the workpiece to be processed;

[0022] The at least three first locking members are used to adjust the parallelism of the second guide mounting plate along a target direction; the target direction is perpendicular to the direction of the workpiece to be processed.

[0023] According to the present invention, an electrode rotating wire feeding mechanism further includes a connecting assembly, wherein the connecting assembly includes a 3R positioning piece mounting plate and a 3R positioning piece arranged on the 3R positioning piece mounting plate;

[0024] The electrode processing assembly and the guide rail mounting plate are both connected to the 3R positioning piece mounting plate, and the 3R positioning piece is connected to the driving mechanism.

[0025] According to an electrode rotating wire feeding mechanism provided by the present invention, it also includes a posture adjustment plate, a second spherical body and at least three second locking members for connecting the posture adjustment plate and the 3R positioning piece mounting plate, a second gap is provided between the posture adjustment plate and the 3R positioning piece mounting plate, and the second spherical body is arranged in the second gap;

[0026] The electrode processing assembly and the guide rail mounting plate are both connected to the posture adjustment plate;

[0027] The at least three second locking members are used to adjust the parallelism of the posture adjustment plate along a target direction; the target direction is perpendicular to the direction of the workpiece to be processed.

[0028] According to an electrode rotating wire feeding mechanism provided by the present invention, the mechanism further comprises a limit trigger component, and the limit trigger component comprises a limit trigger piece and a limit sensor matched with the limit trigger piece;

[0029] The limit trigger piece is arranged at one end of the sliding plate close to the guide rail assembly, and the limit sensor is arranged on the posture adjustment plate;

[0030] The limit sensor is used to control the drive mechanism to stop driving when it moves along the direction of the workpiece to be processed and contacts the limit trigger piece under the drive of the drive mechanism.

[0031] The electrode rotating wire feeding mechanism provided by the present invention uses a driving mechanism to enable the electrode processing component and the sliding component to move in the direction of the workpiece to be processed. Since the sliding component and the guide component are both connected to the limit component, the limit component and the guide component are synchronously moved a preset distance in the direction of the workpiece to be processed under the drive of the sliding component, so that the distance between the guide component and the workpiece to be processed meets the first preset condition. Then, after the limit component moves the preset distance, the electrode processing component continues to move in the direction of the workpiece to be processed based on the sliding component until the distance between the electrode wire and the workpiece to be processed meets the second preset condition, thereby achieving the gap requirement between the electrode wire and the workpiece to be processed. It can be seen that the electrode rotating wire feeding mechanism of the present invention can realize the position positioning of the electrode processing component and the guide component in the direction of the workpiece to be processed through a driving mechanism, thereby reducing the production cost of the electrode rotating wire feeding mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a structural schematic diagram of an electrospark machining device in the prior art;

[0034] Figure 2 This is one of the structural schematic diagrams of the electrode rotating wire feeding mechanism provided by the present invention;

[0035] Figure 3 This is the second structural schematic diagram of the electrode rotating wire feeding mechanism provided by the present invention;

[0036] Figure 4 This is the third structural schematic diagram of the electrode rotating wire feeding mechanism provided by the present invention;

[0037] Figure 5It is a structural schematic diagram of a guide installation assembly in an electrode rotating wire feeding mechanism provided by the present invention;

[0038] Figure 6 It is a structural schematic diagram of the connecting components in the electrode rotating wire feeding mechanism provided by the present invention. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Combine the following Figure 2-Figure 6 The electrode rotating wire feeding mechanism of the present invention is described.

[0041] Figure 2 This is one of the structural schematic diagrams of the electrode rotating wire feeding mechanism provided by the present invention, such as Figure 2 As shown, the electrode rotating wire feeding mechanism includes a driving mechanism, an electrode processing component 209, a sliding component 206, a limiting component 207 and a guiding component 208; the electrode processing component 209 and the sliding component 206 are both connected to the driving mechanism, and the sliding component 206 and the guiding component 208 are both connected to the limiting component 207; the electrode processing component 209 includes an electrode wire 210.

[0042] The driving mechanism is used to drive the electrode processing assembly 209 and the sliding assembly 206 to move along the direction of the workpiece to be processed.

[0043] The limiting assembly 207 is used to move a preset distance along the direction of the workpiece to be processed under the drive of the sliding assembly 206, and drive the guide assembly 208 to move, so that the distance between the guide assembly 208 and the workpiece to be processed 203 meets the first preset condition.

[0044] The electrode processing assembly 209 is used to continue to move along the direction of the workpiece to be processed based on the sliding assembly 206 after the limiting assembly 207 moves a preset distance, until the distance between the electrode wire 210 and the workpiece to be processed 203 meets a second preset condition.

[0045] Among them, the electrode rotating wire feeding mechanism is based on the principle of electric spark machining, and uses pulse discharge between electrodes to realize the machining of the workpiece to be machined, so a certain discharge gap needs to be maintained between the electrode wire 210 of the electrode machining component 209 and the workpiece to be machined 203. The gap depends on the machining conditions and is usually about a few microns to a few hundred microns. In addition, since the electrode wire 210 is slender in size and has a very low Young's module, the guide component 208 provides a guiding effect for the movement of the electrode wire 210 during the movement of the electrode wire 210 along the direction of the workpiece to be machined, thereby avoiding bending and deformation of the electrode wire 210.

[0046] For example, Figure 2 As shown, the driving mechanism may include a machine tool Z-axis 204 arranged on the machine tool body 201 and a machine tool spindle head 205 arranged on the machine tool Z-axis 204, the electrode processing assembly 209 and the sliding assembly 206 are both connected to the machine tool spindle head 205, and the workpiece 203 to be processed is arranged on the machine tool worktable 202; the driving mechanism drives the electrode processing assembly 209 and the sliding assembly 206 to move along the direction of the workpiece to be processed, because the limit assembly 207 is connected to the sliding assembly 206, and the guide assembly 208 is connected to the limit assembly 207, then under the drive of the sliding assembly 206, the guide assembly 208 and the limit assembly 207 move synchronously along the direction of the workpiece to be processed, after the limit assembly 207 moves a preset distance along the direction of the workpiece to be processed, the limit assembly 207 stops moving, because the limit assembly 207 stops moving, the guide assembly 208 also stops moving, then after the limit assembly 207 moves a preset distance along the direction of the workpiece to be processed, it should be It is obtained that the distance between the guide component 208 and the workpiece 203 to be processed satisfies the first preset condition, wherein the first preset condition is that the distance between the guide component 208 and the workpiece 203 to be processed needs to be within a first threshold range; then, when the driving mechanism continues to drive the electrode processing component 209 and the sliding component 206 to move in the direction of the workpiece to be processed, due to the action of the sliding component 206, the electrode processing component 209 can move in the direction of the workpiece to be processed relative to the limit component 207. Therefore, after the limit component 207 moves a preset distance and under the action of the sliding component 206, the electrode processing component 209 continues to move in the direction of the workpiece to be processed, and after the electrode wire 210 of the electrode processing component 209 passes through the guide component 208, it moves to a distance between it and the workpiece 203 to be processed that satisfies the second preset condition, wherein the second preset condition is that the distance between the electrode wire 210 and the workpiece 203 to be processed needs to be within a second threshold range.

[0047] It should be noted that due to the pulse discharge between the electrodes, a large amount of energy will be generated instantly. If the guide component 208 and the electrode wire 210 are both positioned close to the side of the workpiece 203 to be processed, it will be beneficial to the guidance of the electrode wire 210 and avoid the change in the shape of the processing end of the electrode wire 210 (the part of the electrode wire 210 extending out of the guide component 208). However, the energy generated by the processing may damage the guide component 208. Therefore, during the processing, the distance between the guide component 208 and the workpiece 203 to be processed is greater than the distance between the electrode wire 210 and the workpiece 203 to be processed, so as to avoid damage to the guide component 208 during the processing.

[0048] It should be noted that a certain discharge gap needs to be maintained between the electrode wire 210 and the surface of the workpiece 203 to be processed. If the gap is too large, the inter-electrode voltage cannot break through the inter-electrode medium and spark discharge will not be generated, and it is impossible to process the workpiece 203. Therefore, during the processing, the distance between the electrode wire 210 and the workpiece 203 to be processed must meet the set spark discharge gap (second threshold range).

[0049] It should be noted that during the processing, the current position of the electrode wire 210 is calculated according to the current working state. If the electrode gap is smaller than the set value, it is considered a short circuit, and the electrode rotating wire feeding mechanism is required to retract the electrode wire 210; if the electrode gap is larger than the spark discharge gap, the electrode rotating wire feeding mechanism is required to feed the electrode wire 210; if it is between the two, the current position of the electrode rotating wire feeding mechanism remains unchanged.

[0050] The electrode rotating wire feeding mechanism provided by the present invention uses a driving mechanism to move the electrode processing component 209 and the sliding component 206 along the direction of the workpiece to be processed. Since the sliding component 206 and the guide component 208 are both connected to the limit component 207, the limit component 207 and the guide component 208 are synchronously moved a preset distance along the direction of the workpiece to be processed under the drive of the sliding component 206, so that the distance between the guide component 208 and the workpiece to be processed 203 satisfies the first preset condition, and then after the limit component 207 moves the preset distance, the electrode processing component 209 continues to move along the direction of the workpiece to be processed based on the sliding component 206 until the distance between the electrode wire 210 and the workpiece to be processed 203 satisfies the second preset condition; therefore, the electrode rotating wire feeding mechanism of the present invention can realize the position positioning of the electrode processing component 209 and the guide component 208 in the direction of the workpiece to be processed through a driving mechanism, thereby reducing the production cost of the electrode rotating wire feeding mechanism.

[0051] Optionally, Figure 3 This is the second structural schematic diagram of the electrode rotating wire feeding mechanism provided by the present invention. Figure 4 This is the third structural schematic diagram of the electrode rotating wire feeding mechanism provided by the present invention, such as Figure 3 and Figure 4 As shown, Figure 4The driving mechanism is not shown in the figure. The sliding assembly 206 includes a guide rail mounting plate 303 and a guide rail assembly 313. The guide rail mounting plate 303 is connected to the driving mechanism, and the guide rail assembly 313 is arranged on the guide rail mounting plate 303.

[0052] For example, one end of the guide rail mounting plate 303 is connected to the driving mechanism, the guide rail assembly 313 is set on the guide rail mounting plate 303, and the limit assembly 207 is set on the guide rail assembly 313. Under the action of the guide rail assembly 313, the guide rail mounting plate 303 and the limit assembly 207 can produce relative movement along the direction of the workpiece to be processed.

[0053] For example, the guide rail assembly 313 may include a linear guide rail and a guide rail slider disposed on the linear guide rail; in one embodiment, the linear guide rail is disposed on the guide rail mounting plate 303, and the limit assembly 207 is disposed on the guide rail slider; in another embodiment, the guide rail slider is disposed on the guide rail mounting plate 303, and the linear guide rail is disposed on the limit assembly 207. The guide rail assembly 313 may also include a linear slide and a guide rail slider disposed on the linear slide, or other devices that can realize relative movement of the guide rail mounting plate 303 and the limit assembly 207 along the direction of the workpiece to be processed, and the present invention is not limited to this.

[0054] The electrode rotating wire feeding mechanism provided by the present invention realizes that the guide rail mounting plate 303 moves relative to the limit assembly 207 along the direction of the workpiece to be processed through the guide rail assembly 313 after the limit assembly 207 moves a preset distance, so that the electrode processing assembly 209 can continue to move along the direction of the workpiece to be processed under the drive of the driving mechanism. The guide rail assembly 313 has a simple structure and is easy to assemble.

[0055] Optionally, the limiting assembly 207 includes a sliding member 317 and a limiting seat 308 , and the sliding member 317 is connected to the guide rail assembly 313 .

[0056] The sliding member 317 is used to contact the limiting seat 308 after moving the preset distance along the direction of the workpiece under the drive of the guide rail assembly 313.

[0057] For example, Figure 4As shown, the limit assembly 207 includes a sliding member 317 and a limit seat 308 matched with the sliding member 317, the sliding member 317 is connected to the guide rail assembly 313, and the guide assembly 208 is connected to one end of the sliding member 317 away from the guide rail assembly 313. Under the action of the guide rail assembly 313, the guide rail mounting plate 303 and the sliding member 317 can generate relative movement along the direction of the workpiece to be processed. The driving mechanism drives the electrode processing assembly 209 and the sliding assembly 206 to move along the direction of the workpiece to be processed. The sliding member 317 moves along the direction of the workpiece to be processed by a preset distance under the drive of the guide rail assembly 313 and then contacts the limit seat 308. The limit seat 308 is used to provide a limit effect for the sliding member 317 to move along the direction of the workpiece to be processed, so that the distance between the guide assembly 208 connected to the sliding member 317 and the workpiece 203 to be processed meets the first preset condition.

[0058] Furthermore, the limiting assembly 207 further includes a connecting member 307 , the sliding member 317 includes a sliding plate 305 and a limiting plate 306 , and the limiting plate 306 includes a first mounting plate and a second mounting plate connected in an L-shape.

[0059] The sliding plate 305 is connected to the guide rail assembly 313 , the first mounting plate is arranged on the sliding plate 305 , and the second mounting plate is provided with a guide hole; the connecting member 307 passes through the guide hole and is arranged on the second mounting plate.

[0060] When the connecting member 307 is not fixedly connected to the second mounting plate but is fixedly connected to the limit seat 308, the second mounting plate is used to contact the limit seat 308 after moving the preset distance along the direction of the workpiece under the drive of the guide rail assembly 313.

[0061] When the connecting member 307 is fixedly connected to the second mounting plate, the connecting member 307 is driven by the guide rail assembly 313 to move the preset distance along the direction of the workpiece to be processed and then contact the limit seat 308 .

[0062] For example, the sliding member 317 includes a sliding plate 305 and a limiting plate 306 installed on the sliding plate 305, and the limiting plate 306 includes a first mounting plate and a second mounting plate connected in an L shape; the sliding plate 305 is connected to the guide rail assembly 313, the first mounting plate is arranged on the sliding plate 305, and the second mounting plate is provided with a guide hole; the limiting assembly 207 also includes a connecting member 307, and the connecting member 307 is arranged on the second mounting plate through the guide hole. The specific connection method of the connecting member 307 may include the following two methods:

[0063] In the first method, the connecting member 307 is a guide rod, the lower end of which is fixed to the limit seat 308, and the upper end of which is arranged on the second mounting plate through the guide hole in a clearance fit manner. The guide rod provides a guiding function for the second mounting plate to move along the direction of the workpiece to be processed. Then, the second mounting plate moves a preset distance in the direction of the workpiece to be processed under the drive of the guide rail assembly 313 and contacts the limit seat 308.

[0064] It should be noted that, in the actual processing process, the distance between the guide assembly 208 and the workpiece 203 to be processed needs to be adjusted, so the present invention sets multiple groups of mounting holes on the sliding plate 305, and the multiple groups of mounting holes are arranged side by side along the direction of the workpiece to be processed. By adjusting the first mounting plate to be installed on different groups of mounting holes, the sliding plate 305 can be adjusted to move a preset distance along the direction of the workpiece to be processed, thereby achieving the adjustment of the distance between the guide assembly 208 installed on the sliding plate 305 and the workpiece 203 to be processed.

[0065] The second method, such as Figure 4 As shown, the connecting member 307 is an adjustment screw, and the connecting member 307 is connected to the guide hole of the second mounting plate through threaded cooperation and locked by a nut. Then, the second mounting plate and the connecting member 307 as a whole move a preset distance in the direction of the workpiece to be processed under the drive of the guide rail assembly 313 and then contact the limit seat 308.

[0066] It should be noted that the height of the sliding plate 305 can be limited by adjusting the height of the adjusting screw in conjunction with the limit seat 308, thereby determining the height of the guide assembly 208 installed at the bottom end of the sliding plate 305 to adjust the distance between the guide assembly 208 and the workpiece 203 to be processed.

[0067] The electrode rotating wire feeding mechanism provided by the present invention, the limiting component 207 also includes a connecting member 307, which can provide a guiding function for the movement of the sliding member 317 relative to the limiting seat 308. In addition, the sliding plate 305 can be adjusted to move a preset distance along the direction of the workpiece to be processed, thereby adjusting the distance between the guide component 208 installed on the sliding plate 305 and the workpiece to be processed 203 to be suitable for different working conditions.

[0068] Optionally, a hollow cavity is provided inside the electrode wire 210, and the electrode processing assembly 209 also includes a rotating assembly and a water pipe connector 315, the rotating assembly includes a rotating seat 316 and a rotating shaft 312 arranged on the rotating seat 316, a first cavity is provided inside the rotating seat 316, and a second cavity is provided inside the rotating shaft 312.

[0069] The rotating seat 316 is connected to the driving mechanism, the water pipe connector 315 is arranged on the rotating seat 316, the electrode wire 210 is connected to the rotating shaft 312, and the water pipe connector 315, the first cavity, the second cavity and the hollow cavity are connected in sequence.

[0070] Among them, in the prior art, when deep small holes are processed, the slag generated by the processing gathers at the bottom hole. Due to the existence of the residue, the electrodes are insulated and the discharge stops, causing the processing failure to stop. Therefore, the poor chip removal is the main factor affecting the processing. In order to solve the chip removal problem, the present invention uses a high-pressure rotating flushing liquid to forcibly flush the slag out of the deep small hole during the processing.

[0071] For example, Figure 4 As shown, the electrode processing assembly 209 also includes a rotating assembly and a water pipe connector 315, the rotating assembly includes a rotating seat 316 and a rotating shaft 312 arranged on the rotating seat 316, the rotating seat 316 is connected to the driving mechanism, and since the guide rail mounting plate 303 is also connected to the driving mechanism, the rotating seat 316 can be directly connected to the driving mechanism, or it can be installed on the guide rail mounting plate 303, and the connection with the driving mechanism is realized through the guide rail mounting plate 303; the water pipe connector 315 is arranged on the rotating seat 316; the electrode wire 210 is connected to the rotating shaft 312, and specifically, a drill chuck can be arranged at the output end below the rotating shaft 312, and the drill chuck can clamp the electrode wire 210.

[0072] A first cavity is provided inside the rotating seat 316, a second cavity is provided inside the rotating shaft 312, and the electrode wire 210 is a hollow structure, so a hollow cavity is provided inside the electrode wire 210, and the water pipe connector 315, the first cavity, the second cavity and the hollow cavity are connected in sequence to form a high-pressure waterway channel. The water pipe connector 315 is connected to the external waterway system. During the processing of the workpiece 203 to be processed, the high-pressure water of the external waterway system passes through the water pipe connector 315, the first cavity and the second cavity in sequence, and then passes through the hollow cavity of the electrode wire 210 and enters the deep small hole of the workpiece 203 to force the slag out of the deep small hole of the workpiece 203 to be processed.

[0073] The electrode rotary wire feeding mechanism provided by the present invention has a high-pressure water channel. When deep small holes are processed, high-pressure rotary flushing liquid is used to flush out the slag in the deep small holes of the workpiece 203 to avoid processing stoppage caused by poor chip removal.

[0074] Optionally, the guide assembly 208 includes a guide 311 and a guide mounting assembly 309 , and the guide 311 is disposed at an end of the sliding plate 305 away from the guide rail assembly 313 through the guide mounting assembly 309 .

[0075] For example, Figure 4As shown, the guide assembly 208 includes a guide 311 and a guide mounting assembly 309. The guide 311 can be set at one end of the sliding plate 305 away from the guide rail assembly 313 through the guide mounting assembly 309; the guide 311 provides a guiding function for the movement of the electrode wire 210, and the guide 311 is provided with a guide hole for the electrode wire 210 to pass through, and the center line of the guide hole is parallel to the direction of the workpiece to be processed, and the guide hole and the electrode wire 210 are clearance-matched.

[0076] Further, Figure 5 FIG. 1 is a partial enlarged schematic diagram of a guide installation assembly in the electrode rotating wire feeding mechanism provided by the present invention, such as Figure 5 As shown, the guide mounting assembly 309 includes a first guide mounting plate 501, a second guide mounting plate 502, a first spherical body 503 and at least three first locking members for connecting the first guide mounting plate 501 and the second guide mounting plate 502, a first gap being provided between the first guide mounting plate 501 and the second guide mounting plate 502, and the first spherical body 503 being arranged in the first gap.

[0077] The first guide guide mounting plate 501 is disposed at one end of the sliding plate 305 away from the guide rail assembly 313 , and the guide 311 is disposed on the second guide guide mounting plate 502 along the direction of the workpiece to be processed.

[0078] The at least three first locking members are used to adjust the parallelism of the second guide guide mounting plate 502 along a target direction; the target direction is perpendicular to the direction of the workpiece to be processed.

[0079] For example, when the guide 311 is set on the sliding plate 305 through the guide mounting assembly 309, there is an assembly error, or an assembly error of other components in the electrode rotating wire feeding mechanism, so that the center line of the guide hole is not along the direction of the workpiece to be processed, then the position of the guide 311 needs to be adjusted. Specifically, the guide mounting assembly 309 includes a first guide guide mounting plate 501, a second guide guide mounting plate 502, a first spherical body 503 and at least three first locking members. There is a first gap between the first guide guide mounting plate 501 and the second guide guide mounting plate 502. The first spherical body 503 is set in the first gap. The first spherical body 503 can be a steel ball; a first positioning groove that cooperates with the first spherical body 503 can be opened on the first guide guide mounting plate 501, and a second positioning groove that cooperates with the first spherical body 503 can be opened on the second guide guide mounting plate 502; in order to facilitate processing, A first through hole cooperating with the first spherical body 503 can be opened on the first guide guide mounting plate 501, and a second through hole cooperating with the first spherical body 503 can be opened on the second guide guide mounting plate 502, and the diameters of the first through hole and the second through hole are both smaller than the diameter of the first spherical body 503. Preferably, the diameters of the first through hole and the second through hole are equal, and the axis of the first through hole coincides with the axis of the second through hole. The first spherical body 503 is arranged between the first through hole of the first guide guide mounting plate 501 and the second through hole of the second guide guide mounting plate 502; the first end of the first guide guide mounting plate 501 is arranged at an end of the sliding plate 305 away from the guide rail assembly 313, and the guide 311 is arranged on the second guide guide mounting plate 502 along the direction of the workpiece to be processed; at least three first locking members are used to connect the first guide guide mounting plate 501 and the second guide guide mounting plate 502, Figure 5 The first locking piece is not shown, but connecting holes on the first guide guide mounting plate 501 and the second guide guide mounting plate 502 that cooperate with the first locking piece are shown; preferably, there are four first locking pieces, which are distributed in a quadrilateral and are arranged on the periphery of the first spherical body 503 with the first spherical body 503 as the center. The first locking piece can be a locking screw, and the horizontality of the second guide guide mounting plate 502, that is, the verticality between the guide 311 and the workpiece 203 to be processed, can be adjusted by loosening or tightening the four locking screws.

[0080] The electrode rotating wire feeding mechanism provided by the present invention adjusts the verticality between the guide 311 and the workpiece 203 to be processed through the guide installation component 309, thereby achieving the verticality between the electrode wire 210 passing through the guide 311 and the workpiece 203 to achieve better processing effect.

[0081] Optionally, the electrode rotating wire feeding mechanism provided by the present invention further includes a connecting component, and the connecting component includes a 3R positioning piece mounting plate 301 and a 3R positioning piece arranged on the 3R positioning piece mounting plate 301 .

[0082] The electrode processing assembly 209 and the guide rail mounting plate 303 are both connected to the 3R positioning piece mounting plate 301, and the 3R positioning piece is connected to the driving mechanism.

[0083] For example, Figure 3 and Figure 4 As shown, in order to facilitate the connection between the electrode processing assembly 209 and the guide rail mounting plate 303 and the machine tool spindle head 205, a 3R positioning piece 310 is set on the electrode processing assembly 209 and the guide rail mounting plate 303. Specifically, a 3R positioning piece mounting plate 301 is connected to the electrode processing assembly 209 and the guide rail mounting plate 303, and the 3R positioning piece 310 is set on the 3R positioning piece mounting plate 301. The 3R positioning piece 310 can realize quick connection and disassembly with the machine tool spindle head 205.

[0084] The electrode rotating wire feeding mechanism provided by the present invention connects the 3R positioning piece mounting plate 301 on the electrode processing assembly 209 and the guide rail mounting plate 303. The 3R positioning piece 310 arranged on the 3R positioning piece mounting plate 301 can realize quick connection and disassembly with the machine tool spindle head 205, making assembly simple.

[0085] Optionally, Figure 6 : is a schematic diagram of the structure of the connecting component in the electrode rotating wire feeding mechanism provided by the present invention, such as Figure 6 As shown, the electrode rotating wire feeding mechanism provided by the present invention also includes a posture adjustment plate 302, a second spherical body 601 and at least three second locking members 602 for connecting the posture adjustment plate 302 and the 3R positioning piece mounting plate 301, and a second gap is provided between the posture adjustment plate 302 and the 3R positioning piece mounting plate 301, and the second spherical body 601 is arranged in the second gap.

[0086] The electrode processing assembly 209 and the guide rail mounting plate 303 are both connected to the posture adjustment plate 302 .

[0087] The at least three second locking members 602 are used to adjust the parallelism of the posture adjustment plate 302 along a target direction; the target direction is perpendicular to the direction of the workpiece to be processed.

[0088] For example, Figure 6As shown, a posture adjustment plate 302 is arranged between the 3R positioning piece mounting plate 301 and the guide rail mounting plate 303, and the posture adjustment plate 302 is a horizontal adjustment plate vertically arranged above the guide rail mounting plate 303. The rotating seat 316 of the electrode processing assembly 209 is arranged on the upper side of one side of the guide rail mounting plate 303, and the guide rail assembly 313 is arranged on the other side of the guide rail mounting plate 303. The 3R positioning piece mounting plate 301 is arranged parallel to the posture adjustment plate 302, and there is a second gap between the two. The second spherical body 601 is arranged in the second gap, and the second spherical body 601 can also be a steel ball; a hole can be opened on the 3R positioning piece mounting plate 301. A third positioning groove cooperates with the second spherical body 601, and a fourth positioning groove cooperates with the second spherical body 601 is opened on the posture adjustment plate 302; for the convenience of processing, a third through hole cooperates with the second spherical body 601 can also be opened on the 3R positioning piece mounting plate 301, and a fourth through hole cooperates with the second spherical body 601 can be opened on the posture adjustment plate 302, and the diameters of the third through hole and the fourth through hole are both smaller than the diameter of the second spherical body 601. Preferably, the diameters of the third through hole and the fourth through hole are equal, and the second spherical body 601 is arranged between the third through hole of the 3R positioning piece mounting plate 301 and the fourth through hole of the posture adjustment plate 302. At least three second locking members 602 are used to connect the posture adjustment plate 302 and the 3R positioning plate mounting plate 301. Preferably, there are four second locking members 602, which are distributed in a quadrilateral and arranged on the periphery of the second spherical body 601 with the second spherical body 601 as the center. The second locking members 602 can also be locking screws. The horizontality of the posture adjustment plate 302 can be adjusted by tightening the four locking screws.

[0089] The electrode rotating wire feeding mechanism provided by the present invention adjusts the horizontality of the posture adjustment plate 302 through the second locking member 602 between the posture adjustment plate 302 and the 3R positioning plate mounting plate 301, so that the entire electrode rotating wire feeding mechanism reaches a horizontal state, further achieving better processing effects.

[0090] Optionally, the electrode rotating wire feeding mechanism provided by the present invention further includes a limit trigger component, and the limit trigger component includes a limit trigger piece 304 and a limit sensor 314 cooperating with the limit trigger piece 304 .

[0091] The limit trigger piece 304 is arranged at one end of the sliding plate 305 close to the guide rail assembly 313 , and the limit sensor 314 is arranged on the posture adjustment plate 302 .

[0092] The limit sensor 314 is used to control the driving mechanism to stop driving when the limit sensor 314 moves along the direction of the workpiece to be processed under the drive of the driving mechanism until it contacts the limit trigger piece 304.

[0093] For example, Figure 4 As shown, a limit trigger piece 304 is installed above the sliding plate 305, and a limit sensor 314 is installed on the posture adjustment plate 302 at a position relative to the limit trigger piece 304. The linear slide rail of the guide rail assembly 313 is set on the guide rail mounting plate 303, and the sliding plate 305 is installed on the guide rail slider and can slide with the guide rail slider. The limit trigger piece 304 on the sliding plate 305 is used to trigger the limit sensor 314 installed on the posture adjustment plate 302. The guide rail mounting plate 303 moves along the direction of the workpiece to be processed under the drive of the driving mechanism until the limit sensor 314 on the guide rail mounting plate 303 contacts the limit trigger piece 304 on the sliding plate 305. The limit sensor 314 is triggered to generate a control signal and send the control signal to the machine tool. When the machine tool receives the control signal, it determines that the distance between the electrode wire 210 and the workpiece to be processed 203 meets the second preset condition, and at this time the control driving mechanism stops moving.

[0094] The electrode rotating wire feeding mechanism provided by the present invention controls the distance between the electrode wire 210 and the workpiece 203 to be processed by a limit trigger component, which can achieve accurate control of the position of the electrode wire 210, avoid the distance between the electrode wire 210 and the workpiece 203 to exceed the second preset condition, and prevent damage to the electrode rotating wire feeding mechanism.

[0095] Furthermore, the working process of the electrode rotating wire feeding mechanism of the present invention is as follows:

[0096] First, the workpiece 203 to be processed is set on the machine tool worktable 202 and is located below the electrode wire 210 of the electrode processing assembly 209; secondly, the machine tool spindle head 205 is driven by the machine tool Z-axis 204 to descend, and the electrode processing assembly 209, the sliding assembly 206, the guide assembly 208, and the limit assembly 207 are lowered together with the main machine tool spindle head 205. When it descends to a certain height, the second mounting plate or the connecting member 307 contacts the limit seat 308, and the sliding plate 305 stops descending, so that the distance between the guide 311 and the workpiece 203 to be processed meets the first preset condition; then, when the machine tool spindle head 205 is driven by the machine tool Z-axis 204 to descend again, the sliding plate 305 no longer follows the machine tool spindle head 2 05 descends together and is limited to the current height. Due to the action of the guide rail assembly 313, the guide rail mounting plate 303 can descend relative to the sliding plate 305, and the electrode machining assembly 209 installed on the guide rail mounting plate 303 descends synchronously until the limit sensor 314 on the posture adjustment plate 302 is triggered by the limit trigger sheet 304 on the sliding plate 305, and the machine tool Z-axis 204 stops the movement of the machine tool spindle head 205. At this time, the electrode wire 210 and the workpiece to be processed 203 meet the discharge machining spacing; finally, the high-pressure waterway channel is connected to the external waterway system, and the rotating shaft 312 drives the electrode wire 210 to rotate, and the discharge machining starts. At the same time, the high-pressure water sprayed through the hollow cavity of the electrode wire 210 forcibly flushes out the slag in the deep small hole.

[0097] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electrode rotating wire feeding mechanism, characterized in that: It includes a driving mechanism, an electrode processing assembly, a sliding assembly, a limiting assembly and a guiding assembly; the electrode processing assembly and the sliding assembly are both connected to the driving mechanism, and the sliding assembly and the guiding assembly are both connected to the limiting assembly; the electrode processing assembly includes an electrode wire; The driving mechanism is used to drive the electrode processing assembly and the sliding assembly to move along the direction of the workpiece to be processed; The limiting assembly is used to move a preset distance in the direction of the workpiece to be processed under the drive of the sliding assembly, and drive the guide assembly to move, so that the distance between the guide assembly and the workpiece to be processed meets a first preset condition; The electrode processing assembly is used for continuing to move along the direction of the workpiece to be processed based on the sliding assembly after the limiting assembly moves a preset distance, until the distance between the electrode wire and the workpiece to be processed meets a second preset condition; The sliding assembly comprises a guide rail mounting plate and a guide rail assembly, wherein the guide rail mounting plate is connected to the driving mechanism, and the guide rail assembly is arranged on the guide rail mounting plate; The limiting assembly includes a sliding member and a limiting seat, and the sliding member is connected to the guide rail assembly; The sliding member is used to contact the limit seat after moving the preset distance along the direction of the workpiece under the drive of the guide rail assembly; The limit assembly further includes a connecting member, the sliding member includes a sliding plate and a limit plate, and the limit plate includes a first mounting plate and a second mounting plate connected in an L-shape; The sliding plate is connected to the guide rail assembly, the first mounting plate is arranged on the sliding plate, and the second mounting plate is provided with a guide hole; the connecting member passes through the guide hole and is arranged on the second mounting plate; The guide assembly comprises a guide and a guide mounting assembly, wherein the guide is arranged at an end of the sliding plate away from the guide rail assembly through the guide mounting assembly; The guide mounting assembly comprises a first guide mounting plate, a second guide mounting plate, a first spherical body, and at least three first locking members for connecting the first guide mounting plate and the second guide mounting plate, a first gap is formed between the first guide mounting plate and the second guide mounting plate, and the first spherical body is arranged in the first gap; The first guide mounting plate is arranged on one end of the sliding plate away from the guide rail assembly, and the guide is arranged on the second guide mounting plate along the direction of the workpiece to be processed; The at least three first locking members are used to adjust the parallelism of the second guide mounting plate along a target direction; the target direction is perpendicular to the direction of the workpiece to be processed; Also included is a connection assembly, the connection assembly including a 3R positioning piece mounting plate and a 3R positioning piece disposed on the 3R positioning piece mounting plate; The electrode processing assembly and the guide rail mounting plate are both connected to the 3R positioning piece mounting plate, and the 3R positioning piece is connected to the driving mechanism.

2. The electrode rotating wire feeding mechanism according to claim 1, characterized in that: When the connecting member is not fixedly connected to the second mounting plate but is fixedly connected to the limit seat, the second mounting plate is used to contact the limit seat after moving the preset distance along the direction of the workpiece under the drive of the guide rail assembly.

3. The electrode rotating wire feeding mechanism according to claim 1, characterized in that: When the connecting member is fixedly connected to the second mounting plate but not fixedly connected to the limit seat, the second mounting plate is used to contact the limit seat after moving the preset distance along the direction of the workpiece under the drive of the guide rail assembly.

4. The electrode rotating wire feeding mechanism according to any one of claims 1 to 3, characterized in that: The electrode wire is provided with a hollow cavity inside, the electrode processing assembly further comprises a rotating assembly and a water pipe connector, the rotating assembly comprises a rotating seat and a rotating shaft arranged on the rotating seat, the rotating seat is provided with a first cavity inside, and the rotating shaft is provided with a second cavity inside; The rotating seat is connected to the driving mechanism, the water pipe connector is arranged on the rotating seat, the electrode wire is connected to the rotating shaft, and the water pipe connector, the first cavity, the second cavity and the hollow cavity are connected in sequence.

5. The electrode rotating wire feeding mechanism according to claim 1, characterized in that: It also includes a posture adjustment plate, a second spherical body, and at least three second locking members for connecting the posture adjustment plate and the 3R positioning piece mounting plate, wherein a second gap is provided between the posture adjustment plate and the 3R positioning piece mounting plate, and the second spherical body is arranged in the second gap; The electrode processing assembly and the guide rail mounting plate are both connected to the posture adjustment plate; The at least three second locking members are used to adjust the parallelism of the posture adjustment plate along a target direction; the target direction is perpendicular to the direction of the workpiece to be processed.

6. The electrode rotating wire feeding mechanism according to claim 5, characterized in that: The mechanism further includes a limit trigger assembly, which includes a limit trigger piece and a limit sensor that cooperates with the limit trigger piece; The limit trigger piece is arranged at one end of the sliding plate close to the guide rail assembly, and the limit sensor is arranged on the posture adjustment plate; The limit sensor is used to control the driving mechanism to stop driving when the limit sensor moves along the direction of the workpiece to be processed under the drive of the driving mechanism until it contacts the limit trigger piece.

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