CN114888383A - Electrode rotating wire feeding mechanism - Google Patents

Abstract

The invention provides a rotary electrode wire feeding mechanism, which belongs to the technical field of special machining and comprises a driving mechanism, an electrode machining assembly, a sliding assembly, a limiting assembly and a guiding assembly; the electrode machining assembly and the sliding assembly are connected with the driving mechanism, and the sliding assembly and the guide assembly are connected with the limiting assembly; the electrode processing assembly comprises an electrode wire; the driving mechanism is used for driving the electrode machining assembly and the sliding assembly to move along the direction of the workpiece to be machined; the limiting assembly is driven by the sliding assembly to move for a preset distance along the direction of the workpiece to be machined, so that the distance between the guide assembly and the workpiece to be machined meets a first preset condition; the electrode machining assembly is used for continuously moving along the direction of the workpiece to be machined based on the sliding assembly until the distance between the electrode wire and the workpiece to be machined meets a second preset condition. The invention can realize the position positioning of the electrode processing assembly and the guide assembly in the direction of the workpiece to be processed by one driving mechanism, thereby reducing the production cost of the electrode rotating wire feeding mechanism.

Description

Electrode rotating wire feeding mechanism

Technical Field

The invention relates to the technical field of special machining, in particular to an electrode rotating wire feeding mechanism.

Background

The special processing is a processing method for cutting off materials by means of energy such as electric energy, heat energy, sound energy, light energy, electrochemical energy and the like. With the continuous development of science and technology, electric spark machining is widely applied, wherein electric energy is converted into heat energy by pulse discharge between electrodes, so that metal in a region to be machined of a workpiece is melted and gasified and then discharged to meet the requirements of given size and roughness, and the workpiece is machined.

In the prior art, a schematic structural diagram of an electric discharge machining apparatus is shown in fig. 1, and an electric discharge machining process includes: firstly, a motor of a Z shaft 101 of the machine tool drives a W shaft 102 to descend, and when a guide 106 below the W shaft 102 and a workpiece 104 to be machined reach a set machining distance, the motor of the Z shaft 101 of the machine tool stops; secondly, fixing the workpiece 104 to be processed on the workbench 103; then, the motor of the W shaft 102 drives the rotating electrode shaft 107 to descend, the wire electrode 105 fixed on the rotating electrode shaft 107 descends along with the rotating electrode shaft 107, the wire electrode 105 firstly passes through the guider 106, and the motor of the W shaft 102 stops when the wire electrode meets the discharge machining distance with the workpiece 104 to be machined; finally, the electrode shaft 107 is rotated to drive the electrode wire 105 to rotate, and the discharge machining is started; during machining, the W-axis 102 completes the feeding of the wire electrode 105 to meet the machining requirements.

However, in the above prior art, the movement of the guide 106 and the wire electrode 105 requires different motors to drive them, so that the electric discharge machining apparatus has a high production cost.

Disclosure of Invention

The invention provides an electrode rotating wire feeding mechanism which is used for overcoming the defect that in the prior art, electric spark machining equipment is high in production cost.

The invention provides a rotary electrode wire feeding mechanism which comprises a driving mechanism, an electrode machining assembly, a sliding assembly, a limiting assembly and a guiding assembly, wherein the driving mechanism is arranged on the electrode machining assembly; the electrode machining assembly and the sliding assembly are both connected with the driving mechanism, and the sliding assembly and the guide assembly are both connected with the limiting assembly; the electrode processing assembly comprises an electrode wire;

the driving mechanism is used for driving the electrode machining assembly and the sliding assembly to move along the direction of a workpiece to be machined;

the limiting assembly is used for moving a preset distance along the direction of the workpiece to be machined under the driving of the sliding assembly and driving the guide assembly to move, so that the distance between the guide assembly and the workpiece to be machined meets a first preset condition;

and the electrode machining assembly is used for continuing to move along the direction of the workpiece to be machined based on the sliding assembly after the limiting assembly moves for a preset distance until the distance between the electrode wire and the workpiece to be machined meets a second preset condition.

According to the electrode rotating wire feeding mechanism provided by the invention, the sliding assembly comprises a guide rail mounting plate and a guide rail assembly, the guide rail mounting plate is connected with the driving mechanism, and the guide rail assembly is arranged on the guide rail mounting plate.

According to the electrode rotating wire feeding mechanism provided by the invention, the limiting assembly comprises a sliding part and a limiting seat, and the sliding part is connected with the guide rail assembly;

the sliding part is used for being driven by the guide rail assembly to move for the preset distance along the direction of the workpiece to be machined and then is in contact with the limiting seat.

According to the electrode rotating wire feeding mechanism provided by the invention, the limiting assembly further comprises a connecting piece, the sliding piece comprises a sliding plate and a limiting plate, and the limiting plate comprises a first mounting plate and a second mounting plate which are connected in an L shape;

the sliding plate is connected with 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 piece penetrates through the guide hole and is arranged on the second mounting plate;

under the condition that the connecting piece is not fixedly connected with the second mounting plate and is fixedly connected with the limiting seat, the second mounting plate is used for being driven by the guide rail assembly to move for the preset distance along the direction of the workpiece to be machined and then is contacted with the limiting seat;

under the condition that the connecting piece is fixedly connected with the second mounting plate, the connecting piece is used for being driven by the guide rail assembly to move along the direction of the workpiece to be machined by the preset distance and then to be contacted with the limiting seat.

According to the electrode rotating wire feeding mechanism provided by the invention, a hollow cavity is arranged inside the electrode wire, the electrode machining 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 arranged inside the rotating seat, and a second cavity is arranged inside the rotating shaft;

the rotating seat is connected with the driving mechanism, the water pipe connector is arranged on the rotating seat, the electrode wire is connected with the rotating shaft, and the water pipe connector, the first cavity, the second cavity and the hollow cavity are sequentially communicated.

According to the electrode rotating wire feeding mechanism provided by the invention, the guide assembly comprises a guide device and a guide device mounting assembly, and the guide device is arranged at one end of the sliding plate, which is far away from the guide rail assembly, through the guide device mounting assembly.

According to the electrode rotary wire feeding mechanism provided by the 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 pieces 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 guider mounting plate is arranged at one end, far away from the guide rail assembly, of the sliding plate, and the guider is arranged on the second guider mounting plate along the direction of the workpiece to be machined;

the at least three first locking pieces are used for adjusting the parallelism of the second guide mounting plate along the target direction; the target direction is perpendicular to the direction of the workpiece to be machined.

The electrode rotating wire feeding mechanism further comprises a connecting assembly, wherein the connecting assembly comprises a 3R locating plate mounting plate and a 3R locating plate arranged on the 3R locating plate mounting plate;

the electrode processing subassembly with the guide rail mounting panel all with the 3R spacer mounting panel is connected, the 3R spacer with actuating mechanism connects.

The electrode rotating wire feeding mechanism further comprises a pose adjusting plate, a second spherical body and at least three second locking pieces for connecting the pose adjusting plate and the 3R locating piece mounting plate, wherein a second gap is formed between the pose adjusting plate and the 3R locating piece mounting plate, and the second spherical body is arranged in the second gap;

the electrode machining assembly and the guide rail mounting plate are connected with the pose adjusting plate;

the at least three second locking pieces are used for adjusting the parallelism of the pose adjusting plate along the target direction; the target direction is perpendicular to the direction of the workpiece to be machined.

According to the electrode rotary wire feeding mechanism provided by the invention, the mechanism further comprises a limiting trigger assembly, wherein the limiting trigger assembly comprises a limiting trigger piece and a limiting sensor matched with the limiting trigger piece;

the limit trigger sheet is arranged at one end of the sliding plate close to the guide rail assembly, and the limit sensor is arranged on the pose adjusting plate;

the limit sensor is used for controlling the driving mechanism to stop driving when the driving mechanism is driven to move along the direction of the workpiece to be processed to be contacted with the limit trigger sheet

According to the electrode rotating wire feeding mechanism provided by the invention, the electrode machining component and the sliding component move along the direction of the workpiece to be machined through the driving mechanism, and the sliding component and the guiding component are both connected with the limiting component, so that the limiting component and the guiding component synchronously move for a preset distance along the direction of the workpiece to be machined under the driving of the sliding component, so that the distance between the guiding component and the workpiece to be machined meets a first preset condition, and then after the limiting component moves for the preset distance, the electrode machining component continues to move along the direction of the workpiece to be machined on the basis of the sliding component until the distance between the electrode wire and the workpiece to be machined meets a second preset condition, so that the requirement on the gap between the electrode wire and the workpiece to be machined is met; therefore, the electrode rotary wire feeding mechanism can realize the positioning of the electrode machining assembly and the guide assembly in the direction of the workpiece to be machined through one driving mechanism, so that the production cost of the electrode rotary wire feeding mechanism is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic view of a structure of an electric discharge machining apparatus in the related art;

FIG. 2 is a schematic structural diagram of an electrode rotary wire feeding mechanism provided by the present invention;

FIG. 3 is a second schematic structural view of the electrode rotating wire feeding mechanism provided in the present invention;

FIG. 4 is a third schematic structural view of the electrode rotating wire feeding mechanism provided in the present invention;

FIG. 5 is a schematic structural view of a guide mounting assembly in the electrode rotary feed mechanism provided by the present invention;

fig. 6 is a schematic structural diagram of a connecting component in the electrode rotary wire feeding mechanism provided by the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The electrode rotary feed mechanism of the present invention is described below with reference to fig. 2-6.

Fig. 2 is a schematic structural diagram of an electrode rotary wire feeding mechanism provided by the present invention, and as shown in fig. 2, the electrode rotary wire feeding mechanism includes a driving mechanism, an electrode processing assembly 209, a sliding assembly 206, a limiting assembly 207, and a guiding assembly 208; the electrode machining assembly 209 and the sliding assembly 206 are both connected with the driving mechanism, and the sliding assembly 206 and the guide assembly 208 are both connected with the limiting assembly 207; the electrode machining assembly 209 includes a wire electrode 210.

The driving mechanism is used for driving the electrode machining assembly 209 and the sliding assembly 206 to move along the direction of the workpiece to be machined.

The limiting component 207 is configured to move a preset distance along the direction of the workpiece to be processed under the driving of the sliding component 206, and drive the guiding component 208 to move, so that the distance between the guiding component 208 and the workpiece 203 to be processed meets a first preset condition.

The electrode machining component 209 is configured to, after the limiting component 207 moves a preset distance, continue to move in the direction of the workpiece to be machined based on the sliding component 206 until the distance between the wire electrode 210 and the workpiece 203 to be machined meets a second preset condition.

The electrode rotating wire feeding mechanism is based on the principle of electric spark machining, and utilizes pulse discharge between electrodes to realize machining of the workpiece to be machined, so that 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, and the gap depends on machining conditions and is generally about several micrometers to several hundred micrometers. In addition, since the wire electrode 210 is slim in size and has a low young's modulus, the guide assembly 208 provides a guide effect for the movement of the wire electrode 210 during the movement of the wire electrode 210 in the direction of the workpiece to be processed, thereby preventing the wire electrode 210 from being bent and deformed, etc.

Illustratively, as shown in fig. 2, the driving mechanism may include a machine Z axis 204 provided on the machine body 201 and a machine spindle head 205 provided on the machine Z axis 204, the electrode machining assembly 209 and the slide assembly 206 are both connected to the machine spindle head 205, and the member to be machined 203 is provided on the machine table 202; the driving mechanism drives the electrode processing component 209 and the sliding component 206 to move along the direction of the workpiece to be processed, the limiting component 207 is connected with the sliding component 206, the guiding component 208 is connected with the limiting component 207, the guiding component 208 and the limiting component 207 synchronously move along the direction of the workpiece to be processed under the driving of the sliding component 206, the limiting component 207 stops moving after the limiting component 207 moves a preset distance along the direction of the workpiece to be processed, the guiding component 208 also stops moving due to the stopping of the limiting component 207, and after the limiting component 207 moves the preset distance along the direction of the workpiece to be processed, the distance between the guiding component 208 and the workpiece 203 to be processed meets a first preset condition, wherein the first preset condition is that the distance between the guiding component 208 and the workpiece 203 to be processed is required to be within a first threshold range; then, when the driving mechanism continues to drive the electrode machining component 209 and the sliding component 206 to move along the direction of the workpiece to be machined, due to the action of the sliding component 206, the electrode machining component 209 can move along the direction of the workpiece to be machined relative to the limiting component 207, therefore, after the limiting component 207 moves by a preset distance and under the action of the sliding component 206, the electrode machining component 209 continues to move along the direction of the workpiece to be machined, and after the wire electrode 210 of the electrode machining component 209 passes through the guide component 208, the wire electrode moves to a position where the distance between the wire electrode 210 and the workpiece 203 to be machined meets a second preset condition, wherein the second preset condition is that the distance between the wire electrode 210 and the workpiece 203 to be machined needs to be within a second threshold range.

It should be noted that, due to the pulse discharge between the electrodes, a large amount of energy is generated instantaneously, and if the guiding component 208 and the wire electrode 210 are both positioned close to the side of the workpiece 203 to be processed, the guiding of the wire electrode 210 is facilitated, and the form change of the processing end of the wire electrode 210 (the portion of the wire electrode 210 extending out of the guiding component 208) is avoided, but the guiding component 208 is damaged by the energy generated by the processing, so that the distance between the guiding component 208 and the workpiece 203 to be processed is greater than the distance between the wire electrode 210 and the workpiece 203 to be processed during the processing, and the damage of the guiding component 208 during the processing is avoided.

It should be noted that a certain discharge gap needs to be maintained between the wire electrode 210 and the surface of the workpiece 203, and if the gap is too large, the interpolar voltage cannot break through the interpolar medium, so that spark discharge is not generated, and the workpiece 203 cannot be machined. Therefore, the distance between the wire electrode 210 and the workpiece 203 to be machined during machining must satisfy a set spark discharge gap (second threshold range).

It should be noted that, during the machining process, the current position of the wire electrode 210 is calculated according to the current working state, and if the electrode gap is smaller than a set value, it is considered to be a short circuit, and the wire electrode 210 is retracted by requiring the electrode to rotate the wire feeding mechanism; 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 the electrode is positioned between the electrode and the wire feeding mechanism, the current position of the electrode rotating wire feeding mechanism is kept unchanged.

According to the electrode rotating wire feeding mechanism provided by the invention, the electrode machining component 209 and the sliding component 206 both move along the direction of the workpiece to be machined through the driving mechanism, and because the sliding component 206 and the guiding component 208 are both connected with the limiting component 207, the limiting component 207 and the guiding component 208 synchronously move for a preset distance along the direction of the workpiece to be machined under the driving of the sliding component 206, so that the distance between the guiding component 208 and the workpiece 203 to be machined meets a first preset condition, and then after the limiting component 207 moves for the preset distance, the electrode machining component 209 continues to move along the direction of the workpiece to be machined on the basis of the sliding component 206 until the distance between the electrode wire 210 and the workpiece 203 to be machined meets a second preset condition; therefore, the electrode rotary wire feeding mechanism of the invention can realize the positioning of the electrode machining component 209 and the guide component 208 in the direction of the workpiece to be machined through one driving mechanism, thereby reducing the production cost of the electrode rotary wire feeding mechanism.

Alternatively, fig. 3 is a second schematic structural diagram of the electrode rotary wire feeding mechanism provided by the present invention, fig. 4 is a third schematic structural diagram of the electrode rotary wire feeding mechanism provided by the present invention, as shown in fig. 3 and 4, a driving mechanism is not shown in fig. 4, 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 with the driving mechanism, and the guide rail assembly 313 is disposed on the guide rail mounting plate 303.

Illustratively, one end of the guide rail mounting plate 303 is connected with the driving mechanism, the guide rail assembly 313 is arranged on the guide rail mounting plate 303, the limiting assembly 207 is arranged on the guide rail assembly 313, and under the action of the guide rail assembly 313, the guide rail mounting plate 303 and the limiting assembly 207 can generate relative movement along the direction of the workpiece to be processed.

For example, the rail assembly 313 may include a linear slide rail and a rail slider disposed on the linear slide rail; in one embodiment, the linear slide rail is disposed on the rail mounting plate 303, and the limiting assembly 207 is disposed on the rail slider; in another embodiment, the rail slider is disposed on the rail mounting plate 303 and the linear slide is disposed on the spacing assembly 207. The guide rail assembly 313 may also be a guide rail slider including a linear sliding groove and a linear sliding groove, or other devices capable of achieving the relative movement between the guide rail mounting plate 303 and the limiting assembly 207 along the direction of the workpiece to be processed, which is not limited by the invention.

According to the electrode rotating wire feeding mechanism provided by the invention, after the limiting component 207 moves for a preset distance, the guide rail mounting plate 303 moves relative to the limiting component 207 along the direction of a workpiece to be machined through the guide rail component 313, so that the electrode machining component 209 can continuously move along the direction of the workpiece to be machined under the driving of the driving mechanism, and the guide rail component 313 is simple in structure and convenient to assemble.

Optionally, the position-limiting assembly 207 comprises a sliding member 317 and a position-limiting seat 308, and the sliding member 317 is connected with the guide rail assembly 313.

The sliding part 317 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 with the limiting seat 308.

Illustratively, as shown in fig. 4, the position-limiting assembly 207 includes a sliding member 317 and a position-limiting seat 308 engaged with the sliding member 317, the sliding member 317 is connected to the guide rail assembly 313, and the guiding assembly 208 is connected to an end of the sliding member 317 away from the guide rail assembly 313, so that the guide rail mounting plate 303 and the sliding member 317 can be relatively moved in the direction of the workpiece under the action of the guide rail assembly 313. The driving mechanism drives the electrode processing component 209 and the sliding component 206 to move along the direction of the workpiece to be processed, the sliding component 317 is driven by the guide rail component 313 to move along the direction of the workpiece to be processed by a preset distance and then contacts with the limiting seat 308, and the limiting seat 308 is used for providing a limiting effect for the sliding component 317 to move along the direction of the workpiece to be processed, so that the distance between the guide component 208 connected to the sliding component 317 and the workpiece 203 to be processed meets a first preset condition.

Further, the limiting assembly 207 further comprises a connecting member 307, the sliding member 317 comprises a sliding plate 305 and a limiting plate 306, and the limiting plate 306 comprises a first mounting plate and a second mounting plate which are connected in an L shape.

The sliding plate 305 is connected with 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 is disposed on the second mounting plate through the guide hole.

Under the condition that the connecting member 307 is not fixedly connected to the second mounting plate and is fixedly connected to the limiting seat 308, the second mounting plate is configured to move the preset distance along the direction of the workpiece to be processed under the driving of the guide rail assembly 313 and then contact the limiting seat 308.

Under the condition that 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 contacts with the limiting seat 308.

Illustratively, the slider 317 includes a sliding plate 305 and a limiting plate 306 mounted 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 with 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 position-limiting assembly 207 further comprises a connecting member 307, the connecting member 307 is disposed on the second mounting plate through the guiding hole, and the specific connection manner of the connecting member 307 may include the following two manners:

in the first mode, the connecting part 307 is a guide rod, the lower end of the guide rod is fixed with the limiting seat 308, the upper end of the guide rod passes through the guide hole in a clearance fit manner and is arranged on the second mounting plate, the guide rod provides a guiding effect for the second mounting plate to move along the direction of the workpiece to be machined, and the second mounting plate is driven by the guide rail component 313 to move along the direction of the workpiece to be machined by a preset distance and then is in contact with the limiting seat 308.

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 sets of mounting holes on the sliding plate 305, the multiple sets of mounting holes are arranged side by side along the direction of the workpiece to be processed, and by adjusting the first mounting plate to be mounted on different sets of mounting holes, the adjustment of the sliding plate 305 moving along the direction of the workpiece to be processed by a preset distance can be realized, and further, the adjustment of the distance between the guide assembly 208 mounted on the sliding plate 305 and the workpiece 203 to be processed can be realized.

In the second mode, as shown in fig. 4, the connecting member 307 is an adjusting screw, the connecting member 307 is connected to the guide hole of the second mounting plate by screw-thread fit and locked by a nut, and the second mounting plate and the connecting member 307 are integrally moved by a preset distance along the direction of the workpiece to be processed under the driving of the guide rail assembly 313 and then contact with the limiting seat 308.

It should be noted that the height of the sliding plate 305 can be limited by adjusting the height of the adjusting screw and matching with the limiting seat 308, so as to determine the height of the guide assembly 208 mounted at the bottom end of the sliding plate 305, and thus, the adjustment of the distance between the guide assembly 208 and the workpiece 203 to be processed can be realized.

According to the electrode rotating wire feeding mechanism provided by the invention, the limiting component 207 further comprises a connecting piece 307, which can guide the movement of the sliding piece 317 relative to the limiting seat 308, and in addition, the sliding plate 305 can be adjusted to move for a preset distance along the direction of the workpiece to be processed, so that the adjustment of the distance between the guiding component 208 arranged on the sliding plate 305 and the workpiece 203 to be processed is realized, and the electrode rotating wire feeding mechanism is suitable for different working conditions.

Optionally, a hollow cavity is formed inside the wire electrode 210, the electrode processing assembly 209 further includes a rotating assembly and a water pipe connector 315, the rotating assembly includes a rotating base 316 and a rotating shaft 312 disposed on the rotating base 316, a first cavity is formed inside the rotating base 316, and a second cavity is formed inside the rotating shaft 312.

The rotary base 316 is connected to the driving mechanism, the water pipe connector 315 is disposed on the rotary base 316, the wire electrode 210 is connected to the rotary shaft 312, and the water pipe connector 315, the first cavity, the second cavity, and the hollow cavity are sequentially communicated.

In the prior art, when a deep small hole is machined, slag generated by machining is accumulated in a bottom hole, and due to the existence of the slag, the discharge between electrodes is stopped due to insulation, so that machining faults are stopped, and therefore unsmooth chip removal is a main factor influencing machining. In order to solve the problem of chip removal, the invention adopts high-pressure rotary flushing liquid to forcibly punch the slag chips out of the small deep holes in the machining process.

Illustratively, as shown in fig. 4, the electrode processing assembly 209 further includes a rotating assembly and a water pipe connector 315, the rotating assembly includes a rotating base 316 and a rotating shaft 312 disposed on the rotating base 316, the rotating base 316 is connected to the driving mechanism, since the rail mounting plate 303 is also connected to the driving mechanism, the rotating base 316 may be directly connected to the driving mechanism, or may be mounted on the rail mounting plate 303, and the connection with the driving mechanism is achieved through the rail mounting plate 303; the water pipe connector 315 is disposed on the rotary base 316; the electrode wire 210 is connected with the rotating shaft 312, and specifically, a drill chuck capable of clamping the electrode wire 210 is arranged at the output end below the rotating shaft 312.

The rotating base 316 is provided with a first cavity inside, the rotating shaft 312 is provided with a second cavity inside, the wire electrode 210 is of a hollow structure, the wire electrode 210 is provided with a hollow cavity inside, and the water pipe connector 315, the first cavity, the second cavity and the hollow cavity are sequentially communicated to form a high-pressure water passage. The water pipe connector 315 is connected with an external water path system, and in the processing process of the workpiece 203 to be processed, high-pressure water of the external water path system passes through the water pipe connector 315, the first cavity and the second cavity in sequence, then passes through the hollow cavity of the electrode wire 210 and enters the deep small hole of the workpiece 203 to be processed, and the slag chips are forcibly punched out of the deep small hole of the workpiece 203 to be processed.

The electrode rotary wire feeding mechanism provided by the invention is provided with a high-pressure water channel, and during deep hole machining, high-pressure rotary flushing liquid is adopted to flush out slag chips in a deep hole of a workpiece 203 to be machined, so that machining stop caused by unsmooth chip removal is avoided.

Optionally, the guide assembly 208 comprises a guide 311 and a guide mounting assembly 309, wherein the guide 311 is disposed on an end of the sliding plate 305 away from the guide rail assembly 313 via the guide mounting assembly 309.

Illustratively, as shown in fig. 4, the guide assembly 208 includes a guide 311 and a guide mounting assembly 309, the guide 311 may be disposed at an end of the sliding plate 305 away from the guide rail assembly 313 by the guide mounting assembly 309; the guide 311 provides a guiding function for the movement of the wire electrode 210, and the guide 311 is provided with a guide hole for the wire electrode 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 is in clearance fit with the wire electrode 210.

Further, fig. 5 is a partially enlarged schematic view of a guide mounting assembly in the electrode rotary wire feeding mechanism provided by the present invention, and as shown in fig. 5, 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, wherein a first gap is formed between the first guide mounting plate 501 and the second guide mounting plate 502, and the first spherical body 503 is disposed in the first gap.

The first guide mounting plate 501 is disposed at an end of the sliding plate 305 away from the guide rail assembly 313, and the guide 311 is disposed on the second guide mounting plate 502 in the direction of the member to be processed.

The at least three first locking members for adjusting the parallelism of the second director guide mounting plate 502 in the target direction; the target direction is perpendicular to the direction of the workpiece to be machined.

Illustratively, when the guide 311 is disposed on the sliding plate 305 by the guide mounting assembly 309, there is an assembly error, or an assembly error of other devices in the electrode rotating wire feeding mechanism, such that the center line of the guide hole is not along the direction of the workpiece to be processed, and the attitude of the guide 311 needs to be adjusted, specifically, the guide mounting assembly 309 comprises a first guide mounting plate 501, a second guide mounting plate 502, a first spherical body 503 and at least three first locking members, the first guide mounting plate 501 and the second guide mounting plate 502 have a first gap therebetween, the first spherical body 503 is disposed in the first gap, and the first spherical body 503 may be a steel ball; a first positioning groove matched with the first spherical body 503 can be formed on the first guider guide mounting plate 501, and a second positioning groove matched with the first spherical body 503 can be formed on the second guider guide mounting plate 502; for convenience of processing, the first guide mounting plate 501 may be provided with a first through hole which is engaged with the first spherical body 503, the second guide mounting plate 502 may be provided with a second through hole which is engaged with the first spherical body 503, 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, the axis of the first through hole and the axis of the second through hole are coincident, and the first spherical body 503 is disposed between the first through hole of the first guide mounting plate 501 and the second through hole of the second guide mounting plate 502; the first end of the first guide mounting plate 501 is arranged at one end of the sliding plate 305 away from the guide rail assembly 313, and the guide 311 is arranged on the second guide mounting plate 502 along the direction of the workpiece to be processed; at least three first locking members for connecting first guide-guide mounting plate 501 and second guide-guide mounting plate 502, the first locking members not being shown in fig. 5, but showing connection holes on first guide-guide mounting plate 501 and second guide-guide mounting plate 502 that mate with the first locking members; preferably, the first locking members are four and distributed in a quadrilateral shape, and are arranged on the periphery of the first spherical body 503 by taking the first spherical body 503 as a center, and the first locking members can be locking screws, and the levelness of the second guide-guide mounting plate 502, namely the verticality between the guide 311 and the workpiece 203 to be processed, can be adjusted by the tightness of the four locking screws.

According to the electrode rotating wire feeding mechanism provided by the invention, the verticality between the guider 311 and the workpiece 203 to be machined is adjusted through the guider mounting component 309, so that the verticality between the electrode wire 210 penetrating through the guider 311 and the workpiece 203 to be machined is realized, and a better machining effect is realized.

Optionally, the electrode rotation wire feeding mechanism provided by the invention further comprises a connecting assembly, wherein the connecting assembly comprises a 3R locating plate mounting plate 301 and a 3R locating plate arranged on the 3R locating plate mounting plate 301.

Electrode machining subassembly 209 with guide rail mounting panel 303 all with 3R spacer mounting panel 301 is connected, the 3R spacer with actuating mechanism connects.

Illustratively, as shown in fig. 3 and 4, in order to facilitate the connection of the electrode machining assembly 209 and the guide rail mounting plate 303 with the spindle head 205 of the machine tool, a 3R positioning plate 310 is provided on the electrode machining assembly 209 and the guide rail mounting plate 303, specifically, a 3R positioning plate mounting plate 301 is connected on the electrode machining assembly 209 and the guide rail mounting plate 303, the 3R positioning plate 310 is provided on the 3R positioning plate mounting plate 301, and the 3R positioning plate 310 can be quickly connected with and detached from the spindle head 205 of the machine tool.

According to the electrode rotating wire feeding mechanism provided by the invention, the 3R locating plate mounting plate 301 is connected to the electrode machining assembly 209 and the guide rail mounting plate 303, and the 3R locating plate 310 arranged on the 3R locating plate mounting plate 301 can realize quick connection and disassembly with the spindle head 205 of a machine tool, so that the assembly is simple and convenient.

Alternatively, fig. 6 is a schematic structural diagram of a connecting assembly in the electrode rotary feed mechanism provided by the present invention, and as shown in fig. 6, the electrode rotary feed mechanism provided by the present invention further 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 spacer mounting plate 301, wherein a second gap is provided between the posture adjustment plate 302 and the 3R spacer mounting plate 301, and the second spherical body 601 is disposed in the second gap.

The electrode machining assembly 209 and the guide rail mounting plate 303 are both connected to the posture adjustment plate 302.

The at least three second locking members 602 are used to adjust the parallelism of the posture adjustment plate 302 in the target direction; the target direction is perpendicular to the direction of the workpiece to be machined.

Illustratively, as shown in fig. 6, a posture adjusting plate 302 is arranged between the 3R spacer mounting plate 301 and the guide rail mounting plate 303, the posture adjusting plate 302 is a horizontal adjusting plate vertically arranged above the guide rail mounting plate 303, the rotary base 316 of the electrode machining assembly 209 is arranged on one side surface of the guide rail mounting plate 303, the guide rail assembly 313 is arranged on the other side surface of the guide rail mounting plate 303, the 3R spacer mounting plate 301 is arranged above the posture adjusting plate 302 in parallel with a second gap therebetween, the second spherical body 601 is arranged in the second gap, and the second spherical body 601 can also be a steel ball; a third positioning groove matched with the second spherical body 601 can be formed in the 3R positioning sheet mounting plate 301, and a fourth positioning groove matched with the second spherical body 601 is formed in the position and posture adjusting plate 302; for convenience of processing, the 3R spacer mounting plate 301 may be provided with a third through hole for fitting the second spherical body 601, and the posture adjustment plate 302 may be provided with a fourth through hole for fitting the second spherical body 601, both of which have a smaller diameter than the second spherical body 601, and preferably, the third through hole and the fourth through hole have the same diameter, and the second spherical body 601 may be provided between the third through hole of the 3R spacer mounting plate 301 and the fourth through hole of the posture adjustment plate 302. At least three second locking members 602 for connecting the posture adjustment plate 302 and the 3R spacer mounting plate 301, preferably four second locking members 602 are arranged in a quadrilateral distribution and around the second spherical body 601, and the second locking members 602 may also be locking screws, and the levelness of the posture adjustment plate 302 may be adjusted by the tightness of the four locking screws.

According to the electrode rotating wire feeding mechanism provided by the invention, the levelness of the pose adjusting plate 302 is adjusted through the second locking piece 602 between the pose adjusting plate 302 and the 3R locating plate mounting plate 301, so that the whole electrode rotating wire feeding mechanism is in a horizontal state, and a better processing effect is further realized.

Optionally, the electrode rotary wire feeding mechanism provided by the invention further comprises a limit trigger assembly, wherein the limit trigger assembly comprises a limit trigger sheet 304 and a limit sensor 314 matched with the limit trigger sheet 304.

The limit trigger piece 304 is provided at one end of the slide plate 305 near the rail assembly 313, and the limit sensor 314 is provided on the attitude adjustment plate 302.

The limit sensor 314 is configured to control the driving mechanism to stop driving when the driving mechanism is driven to move along the direction of the workpiece to be processed to contact with the limit trigger piece 304.

Illustratively, as shown in fig. 4, a limit trigger piece 304 is installed above the sliding plate 305, a limit sensor 314 is installed on the position-position adjusting plate 302 opposite to the limit trigger piece 304, a linear slide rail of the guide rail assembly 313 is arranged on the guide rail installation plate 303, then the sliding plate 305 is installed on the guide rail slide block and can slide along with the guide rail slide block, the limit trigger piece 304 on the sliding plate 305 is used for triggering the limit sensor 314 installed on the position-position adjusting plate 302, the guide rail installation plate 303 moves along the direction of the workpiece to be processed under the driving of the driving mechanism until the limit sensor 314 on the guide rail installation plate 303 contacts with 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, and when the machine tool receives the control signal, the distance between the wire electrode 210 and the workpiece to be processed 203 is determined to meet a second preset condition, at which time the drive mechanism is controlled to stop moving.

According to the electrode rotating wire feeding mechanism provided by the invention, the control of the distance between the electrode wire 210 and the workpiece to be processed 203 is realized through the limiting trigger assembly, the accurate control of the position of the electrode wire 210 can be realized, the distance between the electrode wire 210 and the workpiece to be processed 203 is prevented from exceeding a second preset condition, and the damage of the electrode rotating wire feeding mechanism is prevented.

Further, the working process of the electrode rotating wire feeding mechanism comprises the following steps:

firstly, a workpiece 203 to be processed is arranged on a machine tool workbench 202 and is positioned below a wire electrode 210 of an electrode processing assembly 209; secondly, the machine tool spindle head 205 descends under the driving of the machine tool Z shaft 204, the electrode machining component 209, the sliding component 206, the guide component 208 and the limiting component 207 descend along with the main machine tool spindle head 205, when the electrode machining component, the sliding component 206, the guide component 208 and the limiting component 207 descend to a certain height, the second mounting plate or the connecting piece 307 is in contact with the limiting seat 308, the sliding plate 305 stops descending, and further the distance between the guide 311 and the workpiece 203 to be machined meets a first preset condition; then, when the machine tool spindle head 205 is driven to descend again by the machine tool Z axis 204, the sliding plate 305 does not descend along with the machine tool spindle head 205 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, the electrode machining assembly 209 mounted on the guide rail mounting plate 303 descends synchronously until the limit sensor 314 on the pose adjusting plate 302 is triggered by the limit trigger sheet 304 on the sliding plate 305, the machine tool Z axis 204 stops the machine tool spindle head 205, and at this time, the wire electrode 210 and the workpiece 203 to be machined meet the electric discharge machining distance; finally, the high-pressure water channel is communicated with an external water channel system, the rotating shaft 312 drives the wire electrode 210 to rotate, electric discharge machining is started, and meanwhile, the high-pressure water sprayed from the hollow cavity of the wire electrode 210 forcedly flushes out slag chips in the deep small hole.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. An electrode rotary wire feeding mechanism is characterized by comprising a driving mechanism, an electrode machining assembly, a sliding assembly, a limiting assembly and a guiding assembly; the electrode machining assembly and the sliding assembly are both connected with the driving mechanism, and the sliding assembly and the guide assembly are both connected with the limiting assembly; the electrode processing assembly comprises an electrode wire;

the driving mechanism is used for driving the electrode machining assembly and the sliding assembly to move along the direction of a workpiece to be machined;

the limiting assembly is used for moving a preset distance along the direction of the workpiece to be machined under the driving of the sliding assembly and driving the guide assembly to move, so that the distance between the guide assembly and the workpiece to be machined meets a first preset condition;

and the electrode machining assembly is used for continuing to move along the direction of the workpiece to be machined based on the sliding assembly after the limiting assembly moves for a preset distance until the distance between the electrode wire and the workpiece to be machined meets a second preset condition.

2. The electrode rotary feed mechanism of claim 1, wherein the slide assembly includes a guide mounting plate coupled to the drive mechanism and a guide assembly disposed on the guide mounting plate.

3. The electrode rotary wire feeding mechanism according to claim 2, wherein the limiting assembly comprises a sliding member and a limiting seat, and the sliding member is connected with the guide rail assembly;

the sliding part is used for being driven by the guide rail assembly to move for the preset distance along the direction of the workpiece to be machined and then is in contact with the limiting seat.

4. The electrode rotary wire feeding mechanism according to claim 3, wherein the limiting assembly further comprises a connecting member, the sliding member comprises a sliding plate and a limiting plate, and the limiting plate comprises a first mounting plate and a second mounting plate which are connected in an L shape;

the sliding plate is connected with 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 piece is arranged on the second mounting plate through the guide hole;

under the condition that the connecting piece is not fixedly connected with the second mounting plate and is fixedly connected with the limiting seat, the second mounting plate is used for being driven by the guide rail assembly to move for the preset distance along the direction of the workpiece to be machined and then is contacted with the limiting seat;

under the condition that the connecting piece is fixedly connected with the second mounting plate, the connecting piece is used for being driven by the guide rail assembly to move along the direction of the workpiece to be machined by the preset distance and then to be contacted with the limiting seat.

5. The electrode rotating wire feeding mechanism according to any one of claims 1 to 4, wherein a hollow cavity is formed inside the electrode wire, the electrode machining assembly further comprises a rotating assembly and a water pipe connector, the rotating assembly comprises a rotating base and a rotating shaft arranged on the rotating base, a first cavity is formed inside the rotating base, and a second cavity is formed inside the rotating shaft;

the rotating seat is connected with the driving mechanism, the water pipe connector is arranged on the rotating seat, the electrode wire is connected with the rotating shaft, and the water pipe connector, the first cavity, the second cavity and the hollow cavity are sequentially communicated.

6. The electrode rotary feed mechanism according to claim 4, wherein the guide assembly comprises a guide and a guide mounting assembly, the guide being disposed on an end of the sliding plate remote from the guide rail assembly by the guide mounting assembly.

7. The electrode rotary feed mechanism of claim 6, wherein the guide mounting assembly comprises a first guide mounting plate, a second guide mounting plate, a first ball, and at least three first lock members for connecting the first guide mounting plate and the second guide mounting plate, the first guide mounting plate and the second guide mounting plate having a first gap therebetween, the first ball being disposed within the first gap;

the first guider mounting plate is arranged at one end, far away from the guide rail assembly, of the sliding plate, and the guider is arranged on the second guider mounting plate along the direction of the workpiece to be machined;

the at least three first locking pieces are used for adjusting the parallelism of the second guide mounting plate along the target direction; the target direction is perpendicular to the direction of the workpiece to be machined.

8. The electrode rotary feed mechanism of claim 3, further comprising a connection assembly, the connection assembly comprising a 3R spacer mounting plate and a 3R spacer disposed on the 3R spacer mounting plate;

the electrode processing subassembly with the guide rail mounting panel all with the 3R spacer mounting panel is connected, the 3R spacer with actuating mechanism connects.

9. The electrode rotary feed mechanism according to claim 8, further comprising a posture adjustment plate, a second spherical body, and at least three second locking members for connecting the posture adjustment plate and the 3R spacer mounting plate, the posture adjustment plate and the 3R spacer mounting plate having a second gap therebetween, the second spherical body being disposed in the second gap;

the electrode machining assembly and the guide rail mounting plate are connected with the pose adjusting plate;

the at least three second locking pieces are used for adjusting the parallelism of the pose adjusting plate along the target direction; the target direction is perpendicular to the direction of the workpiece to be machined.

10. The electrode rotary wire feeding mechanism according to claim 9, wherein the mechanism further comprises a limit trigger assembly, the limit trigger assembly comprises a limit trigger piece and a limit sensor matched with the limit trigger piece;

the limit trigger sheet is arranged at one end of the sliding plate close to the guide rail assembly, and the limit sensor is arranged on the pose adjusting plate;

and the limiting sensor is used for controlling the driving mechanism to stop driving when the driving mechanism is driven to move along the direction of the workpiece to be processed to be in contact with the limiting trigger piece.

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