Dual-electrode clamping mechanism, electric spark machining equipment and machining method of electric spark machining equipment

Abstract

The invention belongs to the technical field of non-traditional machining, and discloses a double-electrode clamping mechanism, electric spark machining equipment and a machining method.The double-electrode clamping mechanism comprises a clamping body, a first driving module, a second driving module and an electrode position detection module, and the clamping body is installed on a movable machine head of the electric spark machining equipment; the clamping body is provided with a mounting cavity, the mounting cavity is provided with two electrode penetrating grooves, the first driving module is used for mounting and driving a rough machining electrode, the second driving module is used for mounting and driving a finish machining electrode, and the electrode position detection module is used for detecting the positions of the rough machining electrode and the finish machining electrode. The double-electrode clamping mechanism can be used for clamping two electrodes with simple shapes to replace a complicated special electrode in the prior art, so that the manufacturing period of the special electrode is shortened, and the material waste during the manufacturing of the special electrode is avoided, thereby reducing the overall processing period of the manufacturing of the vortex hole reference block.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of special processing, in particular to a double-electrode clamping mechanism, an electric spark processing device and a processing method thereof. BACKGROUND

[0002] When processing the micro-preform defect of the inner wall of the hole in the vortex contrast block manufacturing process by using the electric spark forming technology, the "area effect" will restrict it and cause the problem of difficult chip removal. At the same time, due to the local tip discharge, the edge and sharp corner of the electrode will be worn, which will make it difficult to process the preform defect shape in place. In order to solve the above problems, the existing technology usually adopts a double-electrode structure for secondary discharge processing. However, for the traditional integrated processing double-electrode process, there are problems such as time-consuming, material waste, and the integrated double-head electrode structure is easy to collide with the processing object when facing complex processing objects, which will affect the processing quality. Therefore, when performing secondary discharge processing, although the discharge blade will be made into a consistent shape, the double-electrode body will often be made into a special shape to avoid the above collision, which will cause the double-electrode body manufacturing process to be relatively complex, not only increasing the manufacturing cost but also reducing the manufacturing efficiency. SUMMARY

[0003] The first object of the present application is to provide a double-electrode clamping mechanism, which can clamp two electrodes with simple shapes to replace the complex special electrodes in the prior art, save the special electrode manufacturing period, avoid material waste when manufacturing special electrodes, and thus reduce the overall processing period of vortex hole contrast block manufacturing.

[0004] The second object of the present application is to provide an electric spark processing device, which can use two electrodes with simple shapes to replace the complex special electrodes in the prior art, save the special electrode manufacturing period, avoid material waste when manufacturing special electrodes, and thus reduce the overall processing period of vortex hole contrast block manufacturing.

[0005] The third object of the present application is to provide a processing method, which can ensure the tool setting accuracy of the primary processing and the secondary processing for the same position processing, and can avoid the phenomenon of electrode collision in the two processing processes, guarantee the processing safety degree, and improve the processing efficiency.

[0006] To achieve this object, the present application adopts the following technical solutions:

[0007] The application discloses a double-electrode clamping mechanism, comprising a clamping body, the clamping body is installed on a moving head of an electric spark machining device, and the clamping body is provided with an installation cavity, the installation cavity is provided with two electrode through slots; a first driving module, the first driving module comprises a first driving piece, a first transmission piece and a first electrode holder, the first driving piece is connected with the first electrode holder through the first transmission piece to drive the first electrode holder to ascend and descend in the electrode through slot, and the first electrode holder is used for installing a rough machining electrode; a second driving module, the second driving module comprises a second driving piece, a second transmission piece and a second electrode holder, the second driving piece is connected with the second electrode holder through the second transmission piece to drive the second electrode holder to ascend and descend in the electrode through slot, and the second electrode holder is used for installing a finishing electrode; and an electrode position detection module, the electrode position detection module is used for detecting the positions of the rough machining electrode and the finishing electrode.

[0008] In some embodiments, the first driving piece comprises a first servo motor, the electrode position detection module comprises a first position detection device installed on the first servo motor, and the first position detection device is used for detecting the rotation angle of the first servo motor; and / or the second driving piece comprises a second servo motor, the electrode position detection module comprises a second position detection device installed on the second servo motor, and the second position detection device is used for detecting the rotation angle of the second servo motor.

[0009] In some embodiments, the first electrode holder is provided with a first gear rack, the first transmission piece comprises a first gear, the first gear is connected with the motor shaft of the first servo motor, and is in meshing connection with the first gear rack.

[0010] In some specific embodiments, the first gear rack is arranged in pairs and is arranged on the two opposite sides of the first electrode holder, and the first gear is arranged in pairs and is in one-to-one meshing connection with the first gear rack arranged in pairs.

[0011] In some embodiments, the second electrode holder is provided with a second gear rack, the second transmission piece comprises a second gear, the second gear is connected with the motor shaft of the second servo motor, and is in meshing connection with the second gear rack.

[0012] In some specific embodiments, the second gear rack is arranged in pairs and is arranged on the two opposite sides of the second electrode holder, and the second gear is arranged in pairs and is in one-to-one meshing connection with the second gear rack arranged in pairs.

[0013] The application also discloses an electric spark machining device, which comprises a moving head, a head driving module, a head position detection module, a control system and the double-electrode clamping mechanism.

[0014] In some embodiments, the control system comprises a human-computer interaction module, an upper computer, a motion and I / O control module and a position control module, wherein the human-computer interaction module is electrically connected with the upper computer and is used for inputting instructions to the upper computer, the upper computer is electrically connected with the motion and I / O control module and is used for inputting instructions to the motion and I / O control module, the motion and I / O control module is electrically connected with the head driving module, the first driving module and the second driving module and is used for inputting instructions to the head driving module, the first driving module and the second driving module, and the position control module is electrically connected with the motion and I / O control module, the electrode position detection module and the head position detection module, the position control module can receive the detection signals of the electrode position detection module and the head position detection module and feed back to the motion and I / O control module.

[0015] The application further discloses a machining method, which is performed by using the electric spark machining device and comprises the following steps: installing a rough machining electrode and a fine machining electrode on a first electrode holder and a second electrode holder respectively; installing the clamping body on the moving head; inputting machining instructions to the control system; controlling the head driving module and the first driving module to work according to the machining instructions, so that the rough machining electrode performs first machining on a workpiece to be machined; controlling the first driving module to work according to the machining instructions, so that the rough machining electrode is separated from the workpiece to be machined; and controlling the head driving module and the second driving module to work according to the machining instructions, so that the fine machining electrode performs second machining on the workpiece to be machined.

[0016] In some embodiments, the machining instructions output by the control system are updated by detecting the positions of the rough machining electrode and the moving head during the process that the rough machining electrode performs first machining on the workpiece to be machined, and the machining instructions output by the control system are updated by detecting the positions of the fine machining electrode and the moving head during the process that the fine machining electrode performs second machining on the workpiece to be machined.

[0017] The double-electrode clamping mechanism has the following beneficial effects: the first driving module and the second driving module are independently arranged in the clamping body and do not interfere with each other, in actual work, the first driving module can drive the first electrode holder on which the rough machining electrode is mounted to move, and the second driving module can drive the second electrode holder on which the fine machining electrode is mounted to move, so that when the double-electrode clamping mechanism is used, the requirement of designing a complex multi-head electrode in the prior art can be avoided, the design difficulty of a single electrode is reduced, only two electrodes of the same size need to be made as the rough machining electrode and the fine machining electrode, the special electrode manufacturing period is saved, material waste in manufacturing the special electrode is avoided, and thus the overall machining period of the eddy current hole contrast test block is reduced. In addition, the communication between the double-electrode clamping mechanism and the control system of the electric spark machining equipment can also realize quick tool changing, ensure machining safety, and improve machining efficiency.

[0018] The electric spark machining equipment has the following beneficial effects: because of the double-electrode clamping mechanism described above, the electric spark machining equipment can replace the complex special electrode in the prior art with two electrodes of simple shape, save the special electrode manufacturing period, avoid material waste in manufacturing the special electrode, and thus reduce the overall machining period of the eddy current hole contrast test block.

[0019] The machining method has the following beneficial effects: the machining method can accurately control the position change between the moving head, the rough machining electrode and the fine machining electrode, ensure the tool setting accuracy of the first machining and the second machining for the same position, and ensure that the fine machining electrode keeps a safe distance from the workpiece to be machined when the rough machining electrode is machining, so that the fine machining electrode will not form a destructive condition such as friction and collision with the workpiece to be machined, the process of designing a complex multi-head electrode in the prior art is avoided, the design difficulty of the electrode is reduced, and the machining method provided by the present application only needs to make two electrodes of the same size, and through the communication between the double-electrode clamping mechanism and the control system described above, quick tool changing of multiple electrodes can also be realized, machining safety is ensured, and machining efficiency is improved.

[0020] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the double-electrode clamping mechanism of the embodiment of the present application;

[0022] Figure 2 is a structural schematic view of the double-electrode clamping mechanism of the embodiment of the present application from another direction;

[0023] Figure 3is a schematic structural diagram of a first electrode frame according to an embodiment of the present invention;

[0024] Figure 4 1 is a schematic structural diagram of a dual-electrode clamping mechanism in a working state according to an embodiment of the present invention;

[0025] Figure 5 is a control block diagram of an electric discharge machining device according to an embodiment of the present invention;

[0026] Figure 6 It is a process diagram of the processing method according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] 100. Clamping body; 210. First driving member; 220. First gear; 230. First electrode holder; 231. First rack; 310. Second driving member; 320. Second gear; 330. Second electrode holder; 410. First position detection device; 420. Second position detection device; 500. Roughing electrode; 600. Finishing electrode; 700. Machine head driving module; 800. Machine head position detection module; 910. Human-computer interaction module; 920. Upper computer; 930. Motion and I / O control module; 940. Position control module; 10. Workpiece to be processed. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0030] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0031] In the description of this embodiment, terms such as "upper," "lower," "left," "right," "front," and "rear" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0032] The application discloses a double-electrode clamping mechanism, referring to Figures 1-3 The double-electrode clamping mechanism comprises a clamping body 100, a first driving module, a second driving module and an electrode position detection module. The clamping body 100 is installed on a moving head of an electric spark machining device, and is provided with a mounting cavity. The mounting cavity is provided with two electrode through slots. The first driving module comprises a first driving member 210, a first transmission member and a first electrode holder 230. The first driving member 210 is connected with the first electrode holder 230 through the first transmission member, so as to drive the first electrode holder 230 to ascend and descend in the electrode through slot. The first electrode holder 230 is used for mounting a rough machining electrode 500. The second driving module comprises a second driving member 310, a second transmission member and a second electrode holder 330. The second driving member 310 is connected with the second electrode holder 330 through the second transmission member, so as to drive the second electrode holder 330 to ascend and descend in the electrode through slot. The second electrode holder 330 is used for mounting a finishing machining electrode 600. The electrode position detection module is used for detecting the positions of the rough machining electrode 500 and the finishing machining electrode 600.

[0033] It can be understood that, since the first driving module and the second driving module are independently arranged in the clamping body 100 and do not interfere with each other, in actual work, the first driving module can drive the first electrode holder 230, on which the rough machining electrode 500 is mounted, to move, and the second driving module can drive the second electrode holder 330, on which the finishing machining electrode 600 is mounted, to move. Thus, in the first machining process (referring to Figure 4 When the rough machining electrode 500 is machining the workpiece 10, the finishing machining electrode 600 can be driven by the second driving module to move away from the workpiece 10. In the second machining process, when the finishing machining electrode 600 is machining the workpiece 10, the rough machining electrode 500 can be driven by the first driving module to move away from the workpiece 10. Since the electrode position detection module is arranged, neither the finishing machining electrode 600 nor the rough machining electrode 500 will collide or scratch each other. In summary, the double-electrode clamping mechanism of the embodiment can avoid designing a multi-head electrode, and reduce the design difficulty of a single electrode. Only two electrodes of the same size need to be manufactured as the rough machining electrode 500 and the finishing machining electrode 600, thereby saving the manufacturing period of special electrodes, avoiding material waste in manufacturing the special electrodes, and reducing the overall machining period of the eddy current hole contrast test block. In addition, the communication between the double-electrode clamping mechanism and the control system of the electric spark machining device can also realize quick tool changing, ensure machining safety and improve machining efficiency.

[0034] Referring to Figure 2As shown, the first driving member 210 comprises a first servo motor, and the electrode position detection module comprises a first position detection device 410 installed on the first servo motor, and the first position detection device 410 is used for detecting the rotation angle of the first servo motor. It can be understood that the first servo motor is used as the first driving member 210, the control precision of the first servo motor is high, the rotation angle of the first servo motor can be accurately detected through the first position detection device 410 arranged on the first servo motor, so as to indirectly realize the detection of the position of the rough machining electrode 500, on the one hand, the machining precision of the electric spark can be improved, and on the other hand, the collision or scratching phenomenon of the rough machining electrode 500 in the driving process can be avoided. Of course, in other embodiments of the present application, the first driving member 210 can also select other components capable of outputting motion according to actual needs, and the first position detection device 410 can select an angle sensor, an infrared position sensor and the like according to actual needs, as long as the feedback control logic can be formed between the first driving member 210 and the first position detection device 410.

[0035] Reference Figure 2 As shown, the second driving member 310 comprises a second servo motor, and the electrode position detection module comprises a second position detection device 420 installed on the second servo motor, and the second position detection device 420 is used for detecting the rotation angle of the second servo motor. It can be understood that the second servo motor is used as the second driving member 310, the control precision of the second servo motor is high, the rotation angle of the second servo motor can be accurately detected through the second position detection device 420 arranged on the second servo motor, so as to indirectly realize the detection of the position of the fine machining electrode 600, on the one hand, the machining precision of the electric spark can be improved, and on the other hand, the collision or scratching phenomenon of the fine machining electrode 600 in the driving process can be avoided. Of course, in other embodiments of the present application, the second driving member 310 can also select other components capable of outputting motion according to actual needs, and the second position detection device 420 can select an angle sensor, an infrared position sensor and the like according to actual needs, as long as the feedback control logic can be formed between the second driving member 310 and the second position detection device 420.

[0036] Reference Figure 1The first electrode frame 230 is provided with a first rack 231, and the first transmission member includes a first gear 220 connected with the motor shaft of the first servo motor and meshed with the first rack 231. It can be understood that, according to the foregoing, the rotation angle of the first servo motor can be detected by the first position detection device 410, and the first electrode frame 230 is driven by the transmission cooperation of the first rack 231 and the first gear 220, which can ensure that the first electrode frame 230 stably moves under the driving of the first servo motor, thereby ensuring that the rough machining electrode 500 stably approaches or separates from the workpiece 10 to be machined, and on the other hand, the transmission precision of the gear and the rack is high, which improves the control precision of the position of the rough machining electrode 500.

[0037] Optionally, the first rack 231 is provided in pairs and arranged on opposite sides of the first electrode frame 230, and the first gear 220 is provided in pairs and meshed with the first rack 231 arranged in pairs. It can be understood that the two first gears 220 can improve the movement stability of the first electrode frame 230.

[0038] Reference Figure 1 The second electrode frame 330 is provided with a second rack, and the second transmission member includes a second gear 320 connected with the motor shaft of the second servo motor and meshed with the second rack. It can be understood that, according to the foregoing, the rotation angle of the second servo motor can be detected by the second position detection device 420, and the second electrode frame 330 is driven by the transmission cooperation of the second rack and the second gear 320, which can ensure that the second electrode frame 330 stably moves under the driving of the second servo motor, thereby ensuring that the fine machining electrode 600 stably approaches or separates from the workpiece 10 to be machined, and on the other hand, the transmission precision of the gear and the rack is high, which improves the control precision of the position of the fine machining electrode 600.

[0039] Optionally, the second rack is provided in pairs and arranged on opposite sides of the second electrode frame 330, and the second gear 320 is provided in pairs and meshed with the second rack arranged in pairs. It can be understood that the two second gears 320 can improve the movement stability of the second electrode frame 330.

[0040] The present invention also provides an electrospark machining device, comprising a mobile head, a head drive module 700, the aforementioned dual-electrode clamping mechanism, a head position detection module 800, and a control system. The head drive module 700 is connected to the mobile head and is used to drive the mobile head to approach a workpiece 10 to be machined. The head position detection module 800 is used to detect the position of the mobile head. The control system is electrically connected to the head drive module 700, the head position detection module 800, and the dual-electrode clamping mechanism. Due to the aforementioned dual-electrode clamping mechanism, the electrospark machining device can use two electrodes with simple shapes to replace the complex special electrodes used in the prior art, saving the special electrode production cycle and avoiding material waste in the production of special electrodes, thereby reducing the overall processing cycle for the production of eddy current hole comparison test blocks.

[0041] refer to Figure 5 As shown, the control system includes a human-computer interaction module 910, a host computer 920, a motion and I / O control module 930 and a position control module 940, wherein the human-computer interaction module 910 is electrically connected to the host computer 920 and is used to input instructions toward the host computer 920, the host computer 920 is electrically connected to the motion and I / O control module 930 and is used to input instructions toward the motion and I / O control module 930, the motion and I / O control module 930 is electrically connected to the head drive module 700, the first drive module and the second drive module, and inputs instructions toward the head drive module 700, the first drive module and the second drive module, the position control module 940 is electrically connected to the motion and I / O control module 930, the electrode position detection module and the head position detection module 800, and the position control module 940 can receive the detection signal of the electrical connection between the electrode position detection module and the head position detection module 800 and feed it back to the motion and I / O control module 930. It can be understood that by setting up the human-computer interaction module 910, it is convenient for the operator to input control instructions, and the design of the upper computer 920, the motion and I / O control module 930 and the position control module 940 can ensure that during the actual processing process, the position between the moving head, the rough machining electrode 500 and the fine machining electrode 600 can be monitored and adjusted in real time, ensuring the tool setting accuracy of the first and second machining for the same position processing, and secondly ensuring that when the rough machining electrode 500 is fed, the fine machining electrode 600 always maintains a safe distance from the workpiece to be processed 10, ensuring that the fine machining electrode 600 will not cause destructive conditions such as friction and collision with the workpiece to be processed 10.

[0042] The present invention also discloses a processing method, which is performed by using the above-mentioned electric spark processing equipment and referring to Figure 6 As shown, the following steps are included:

[0043] S1: install the roughing electrode 500 and the finishing electrode 600 in the first electrode holder 230 and the second electrode holder 330 respectively; specifically, two silver-tungsten alloy electrodes of the same size are made and installed in the first electrode holder 230 and the second electrode holder 330 of the double electrode clamping mechanism according to the processing process requirements. Since the two silver-tungsten alloy electrodes are of the same shape, the silver-tungsten alloy electrode installed on the first electrode holder 230 is set as the roughing electrode 500, and the silver-tungsten alloy electrode installed on the second electrode holder 330 is set as the finishing electrode 600.

[0044] S2: install the clamping body 100 to the mobile head; specifically, the clamping body 100 of the double electrode clamping mechanism is installed to the connection end of the mobile head through a connecting member such as a screw.

[0045] S3: input the processing instruction to the control system; specifically, the operator inputs the processing instruction to the host computer 920 through the human-computer interaction module 910 according to the actual processing requirements.

[0046] S4: The control system controls the head driving module 700 and the first driving module according to the machining instruction, so that the rough machining electrode 500 performs first machining on the workpiece 10 to be machined, and updates the machining instruction output by the control system during the process of the rough machining electrode 500 performing first machining on the workpiece 10 to be machined; specifically, the host computer 920 identifies the machining instruction and transmits a machining control signal to the motion and I / O control module 930, the motion and I / O control module 930 receives the machining control signal and converts it into a control signal sent to the head driving module 700 and the first servo motor, so that it starts to operate until the rough machining electrode 500 moves to the vicinity of the desired position, during the movement of the moving head and the rough machining electrode 500, the head driving module 700 and the first servo motor both transmit actual control signals to the position control module 940 in real time through the head position detection module 800 and the first position detection device 410, and the position control module 940 feeds back the position deviation to the motion and I / O control module 930; the motion and I / O control module 930 accepts the position deviation feedback, recalculates to obtain a new movement control signal, so as to adjust the position of the moving head and the rough machining electrode 500 until the rough machining electrode 500 is accurately sharpened and rough machining is performed. More specific step process is: when receiving the rough machining signal given by the control system, the first servo motor receives the position movement signal given by the motion and I / O control module 930, and drives the first servo motor to rotate, and the first electrode holder 230 between the two first gears 220 can move under the drive of the first gear 220, when the rough machining electrode 500 works, the first servo motor drives the first servo motor to rotate, and the first servo motor drives the first electrode holder 230 loaded with the rough machining electrode 500 to descend; during the machining process, the position of the rough machining electrode 500 is fed back in real time by the first position detection device 410, and the position of the moving head is fed back in real time by the head position detection module 800, the machining position of the actual position is calculated by the position control module 940 comprehensively feeding back the first position detection device 410 and the head position detection module 800, and then the actual machining control instruction is updated by the motion and I / O control module 930.

[0047] S5: The control system controls the first driving module according to the machining instruction, so that the rough machining electrode 500 is separated from the workpiece 10 to be machined; specifically, after the rough machining is completed, the motion and I / O control module 930 controls the rough machining electrode 500 to reverse and collect the tool, and transmits a tool collection completion signal to the host computer 920; more specifically, when the rough machining electrode 500 works, the first servo motor receives the reverse control signal of the motion and I / O control module 930 to reverse the two first gears 220, and recovers the rough machining electrode 500;

[0048] S6: The control system controls the head driving module 700 and the second driving module according to the machining instruction to make the finishing electrode 600 perform the second machining on the workpiece 10, and the control system updates the machining instruction outputted by the control system during the process that the finishing electrode 600 performs the second machining on the workpiece 10. Specifically, the host computer 920 identifies the machining instruction and transmits the machining control signal to the motion and I / O control module 930, the motion and I / O control module 930 receives the machining control signal and converts it into a control signal sent to the head driving module 700 and the second servo motor, so that the head driving module 700 and the second servo motor start to operate until the finishing electrode 600 moves to the vicinity of the desired position, during the movement of the head and the finishing electrode 600, the head driving module 700 and the finishing electrode servo motor transmit the actual control signal to the position control module 940 in real time through the head position detection module 800 and the second position detection device 420, and the position control module 940 feeds back the position deviation to the motion and I / O control module 930; the motion and I / O control module 930 accepts the position deviation feedback, recalculates the new movement control signal, so as to adjust the position of the moving head and the finishing electrode 600 until the finishing electrode 600 is accurately sharpened and performs the finishing machining. More specific steps are as follows: when receiving the finishing machining signal given by the control system, the second servo motor receives the position movement signal given by the motion and I / O control module 930, and drives the second servo motor to rotate, and the second electrode holder 330 between the two second gears 320 can move under the drive of the second gear 320, when the finishing electrode 600 works, the second servo motor drives the second servo motor to rotate, and the second servo motor drives the second electrode holder 330 loaded with the finishing electrode 600 to descend; during the machining process, the position of the finishing electrode 600 is fed back in real time by the second position detection device 420, and the position of the moving head is fed back in real time by the head position detection module 800, the actual machining position is calculated by the position control module 940 according to the position feedback of the second position detection device 420 and the head position detection module 800, and then the actual machining control instruction is updated by the motion and I / O control module 930.

[0049] The machining method provided by the application can accurately control the position change between the moving head, the rough machining electrode 500 and the fine machining electrode 600, ensure the tool setting accuracy of the first machining and the second machining for machining the same position, and ensure that the fine machining electrode 600 keeps a safe distance from the workpiece 10 to be machined when the rough machining electrode 500 is machined, so that the fine machining electrode 600 cannot form a destructive condition such as friction and collision with the workpiece 10 to be machined, the process of the multi-head electrode designed in the prior art is avoided, the design difficulty of the electrode is reduced, the machining method provided by the application only needs to manufacture two electrodes with the same size, and the work of quick tool changing of multiple electrodes can be achieved through the communication of the double-electrode clamping mechanism and the control system described above, the machining safety is ensured, and the machining efficiency is improved.

[0050] In the description of the present specification, the description referring to the terms "some embodiments", "other embodiments", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] Obviously, the above embodiments of the application are only examples for clearly illustrating the application, and are not intended to limit the implementation modes of the application. For those skilled in the art, various obvious changes, readjustments and replacements can be made without departing from the protection scope of the application. It is unnecessary and impossible to enumerate all the implementation modes here. Any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the claims of the application.

Claims

1. A dual-electrode clamping mechanism, characterized in that: include: A clamping body (100), the clamping body (100) is mounted on a moving head of an electric spark machining device, and the clamping body (100) is provided with a mounting cavity having two electrode penetration slots; a first driving module, the first driving module comprising a first driving member (210), a first transmission member, and a first electrode frame (230); the first driving member (210) is connected to the first electrode frame (230) via the first transmission member to drive the first electrode frame (230) to move up and down in the electrode slot; the first electrode frame (230) is used to mount a rough machining electrode (500); a second driving module, the second driving module comprising a second driving member (310), a second transmission member, and a second electrode frame (330); the second driving member (310) is connected to the second electrode frame (330) via the second transmission member to drive the second electrode frame (330) to move up and down in the electrode slot; the second electrode frame (330) is used to install a finishing electrode (600); An electrode position detection module is used to detect the positions of the rough machining electrode (500) and the fine machining electrode (600).

2. The dual-electrode clamping mechanism according to claim 1, characterized in that: The first driving member (210) includes a first servo motor, the electrode position detection module includes a first position detection device (410) installed on the first servo motor, the first position detection device (410) is used to detect the rotation angle of the first servo motor; and / or: The second driving member (310) includes a second servo motor, and the electrode position detection module includes a second position detection device (420) installed on the second servo motor, and the second position detection device (420) is used to detect the rotation angle of the second servo motor.

3. The dual-electrode clamping mechanism according to claim 2, characterized in that: A first rack (231) is provided on the first electrode frame (230), and the first transmission member includes a first gear (220). The first gear (220) is connected to the motor shaft of the first servo motor and is meshed with the first rack (231).

4. The dual-electrode clamping mechanism according to claim 3, characterized in that: The first racks (231) are arranged in pairs and are arranged on two opposite sides of the first electrode frame (230); the first gears (220) are arranged in pairs and are meshed one by one with the first racks (231) arranged in pairs.

5. The dual-electrode clamping mechanism according to claim 2, characterized in that: A second rack is provided on the second electrode frame (330), and the second transmission member includes a second gear (320). The second gear (320) is connected to the motor shaft of the second servo motor and is meshed with the second rack.

6. The dual-electrode clamping mechanism according to claim 5, characterized in that: The second racks are arranged in pairs and are arranged on two opposite sides of the second electrode frame (330); the second gears (320) are arranged in pairs and are meshed one-to-one with the second racks arranged in pairs.

7. An electric spark machining device, characterized in that: The invention comprises a mobile head, a head driving module (700), a head position detection module (800), a control system and a dual-electrode clamping mechanism as described in any one of claims 1 to 6, wherein the head driving module (700) is connected to the mobile head and is used to drive the mobile head to approach a workpiece (10) to be processed, the head position detection module (800) is used to detect the position of the mobile head, and the control system is electrically connected to the head driving module (700), the head position detection module (800) and the dual-electrode clamping mechanism.

8. The electric spark machining equipment according to claim 7, characterized in that The control system includes a human-computer interaction module (910), a host computer (920), a motion and I / O control module (930) and a position control module (940), wherein the human-computer interaction module (910) is electrically connected to the host computer (920) and is used to input instructions to the host computer (920), the host computer (920) is electrically connected to the motion and I / O control module (930) and is used to input instructions to the motion and I / O control module (930), and the motion and I / O control module (930) is electrically connected to the head drive module ( 700), the first drive module and the second drive module are electrically connected, and instructions are input toward the head drive module (700), the first drive module and the second drive module. The position control module (940) is electrically connected to the motion and I / O control module (930), the electrode position detection module and the head position detection module (800). The position control module (940) can receive the detection signal of the electrical connection between the electrode position detection module and the head position detection module (800) and feed it back to the motion and I / O control module (930).

9. A processing method, characterized in that: The machining method is performed using the electric spark machining equipment according to claim 7 and comprises the following steps: The rough machining electrode (500) and the fine machining electrode (600) are respectively mounted on the first electrode frame (230) and the second electrode frame (330); Mounting the clamping body (100) on the moving head; inputting processing instructions to a control system; The control system controls the machine head drive module (700) and the first drive module to operate according to the machining instruction, so that the rough machining electrode (500) performs a first machining on the workpiece (10) to be machined; The control system controls the first driving module to operate according to the machining instruction, so that the rough machining electrode (500) is separated from the workpiece (10) to be machined; The control system controls the machine head drive module (700) and the second drive module to operate according to the machining instruction, so that the finishing electrode (600) performs a second machining on the workpiece (10) to be machined.

10. The processing method according to claim 9, characterized in that: During the first machining process of the workpiece (10) by the rough machining electrode (500), the machining instructions output by the control system are updated by detecting the positions of the rough machining electrode (500) and the moving head; During the second processing of the workpiece (10) by the finishing electrode (600), the processing instructions output by the control system are updated by detecting the positions of the finishing electrode (600) and the moving head.

Images