CN111715953A - Automatic electrode replacement machining method for electric discharge machine based on electrode clamping correction - Google Patents
Automatic electrode replacement machining method for electric discharge machine based on electrode clamping correction Download PDFInfo
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- CN111715953A CN111715953A CN202010613508.4A CN202010613508A CN111715953A CN 111715953 A CN111715953 A CN 111715953A CN 202010613508 A CN202010613508 A CN 202010613508A CN 111715953 A CN111715953 A CN 111715953A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
- B23H1/04—Electrodes specially adapted therefor or their manufacture
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
Abstract
The invention discloses an automatic electrode replacement processing method of an electric spark machine based on electrode clamping correction, which comprises the following steps: clamping and correcting the first electrode by using a positioning jig, and connecting and fixing the first electrode through a first electrode connecting component to obtain a first electrode module; a machining head of the electric spark machine places a first electrode module on a first electrode module placing position of an electrode tool magazine, and marks the first electrode module for later use; in this way, the positioning jig is used for clamping and correcting the nth electrode to obtain an nth electrode module, and the nth electrode module is placed on the nth electrode module placing position of the electrode tool magazine and marked for later use; and moving a machining head of the electric spark machine to an electrode tool magazine to clamp and connect an nth electrode module, then machining the workpiece to be machined, moving an nth electrode module placing position of the electrode tool magazine to release the nth electrode module after machining is finished, replacing the nth electrode module, and then finishing machining, or clamping and connecting another electrode module to continue to machine the workpiece to be machined correspondingly.
Description
Technical Field
The invention relates to an electric spark machine machining technology, in particular to an automatic electrode replacement machining method of an electric spark machine based on electrode clamping correction.
Background
When an electric spark machine is processed, an electrode (commonly called as a copper electrode or a copper electrode) needs to be clamped and corrected, and the approximate operation flow is as follows: a workpiece to be processed is clamped on a workbench of an electric spark machine, and an electrode is clamped on a processing machine head of the electric spark machine; centering the workpiece on the workbench through a standard ball, positioning a central point of the workpiece to be machined (acquiring a coordinate of the central point of the workpiece to be machined), clamping the electrode (necessarily having a certain inclination or not being straightened), performing multiple fine adjustment attempts by a professional operator through a universal adjusting head (capable of performing fine adjustment of left and right inclination, fine adjustment of front and back inclination and fine adjustment of horizontal rotation) on a machining head in cooperation with an adjusting detector and a reference platform of the electrode (a reference of the electrode), and adjusting and correcting the electrode after 2 to 5 minutes to be horizontal and straightened; after the electrode is corrected, centering the electrode on a reference table matched with the electrode through a standard ball at the periphery of the workpiece, positioning the center point of the electrode (acquiring the coordinates of the center point of the electrode at the moment), then leading the electrode by a processing machine, moving the coordinates of the center point of the electrode at the periphery of the workpiece to the coordinates of the center point of the workpiece (aligning and coinciding the center of the electrode with the center of the workpiece), setting the center point of the workpiece as zero coordinates (0, 0), and then moving the electrode to a position to be processed according to a coordinate system of a drawing corresponding to the workpiece to perform electric spark processing. Moreover, as a workpiece is machined, the machining shapes or sizes of a plurality of positions of the workpiece are different, a whole set of a plurality of electrodes are required to be matched, each time when one electrode is replaced for machining, the electrodes are required to be adjusted and corrected once after being clamped, and meanwhile, the electrodes are required to be centered and positioned at a central point once, and then the center points of the workpiece are moved to be aligned. The whole operation process is time-consuming and labor-consuming, affects the processing efficiency and the processing quality, and is necessary to be equipped with professional operators (mainly because the correction of the electrodes requires professional personnel).
The Dimeng numerical control machinery Co., Ltd, Dongguan city, the applicant filed a patent application on 2019-12-04 by the name: an electric discharge machine electrode clamping correction method and system, the patent application number is: 201911227052.1, which is used for solving the above problems, can clamp and correct the electrode simply, conveniently and quickly, position the center point of the electrode quickly, and ensure the quality with high efficiency and reliability; moreover, for a set of a plurality of electrodes, when the electrodes are replaced, time-consuming adjustment and correction of the electrodes by means of a regulating detector are not needed, and the electrodes do not need to be positioned and centered for a plurality of times by means of a standard ball. This patent application is published in 2020-02-07 and has publication numbers: 110756931A.
In the technical scheme adopted by the patent application, the fixed connection relation between the connecting rod and the electrode is established through a low-melting-point metal material (mainly taking tin as a main material) with the melting point of 60-300 ℃ so as to achieve the effects of connection, fixation and electric conduction. In addition, the patent application also mentions that some quick-drying glues on the market have poor effect, and although the quick-drying glue can quickly connect and fix the connecting rod and the electrode, the quick-drying glue has poor conductivity and affects the processing effect. However, the fixed connection relation between the electrode and the metal material with low melting point such as tin is established, and after all, there is a process of melting and then solidifying the metal, so that the operation has certain danger, and the time required for solidifying the metal after melting is longer, which is not beneficial to further improving the efficiency of clamping the electrode. If the quick-drying glue is adopted for connection, the operation is safe and quick, and the problem of conductivity can be solved only by a wanted method.
In addition, in the technical scheme adopted by the patent application, after the clamping and correction of the electrodes are carried out, the workpiece is directly machined, after one electrode is machined, the other electrode is also required to be clamped and corrected again, namely, if one workpiece needs to be machined by a whole set of multiple electrodes, after each electrode is machined, the other electrode needs to be replaced, and the electrode clamping and correction process is carried out once through manual operation. Therefore, in the process of workpiece machining, a worker needs to be equipped to follow up, when the electrode needs to be replaced, corresponding electrode replacement operation is carried out, automatic electrode replacement cannot be achieved, and full-flow automatic machining cannot be achieved.
Disclosure of Invention
In view of the above-mentioned shortcomings, an object of the present invention is to provide an automatic electrode replacement processing method for an electric discharge machine based on electrode clamping correction, which can clamp and correct a whole set of multiple electrodes at one time to form an electrode module capable of being quickly and automatically clamped and connected to or released from a processing head of the electric discharge machine, and then establish a tool magazine, and place the electrode module in the tool magazine in advance.
The technical scheme adopted by the invention is as follows: an automatic electrode replacement processing method of an electric discharge machine based on electrode clamping correction comprises the following steps:
1) arranging a positioning jig, wherein the positioning jig is arranged on a workbench of an electric spark machine; arranging an electrode tool magazine, wherein the electrode tool magazine is provided with a plurality of electrode module placing positions; preparing n electrode connecting assemblies, wherein the electrode connecting assemblies can be automatically clamped and connected or loosened with a machining head of an electric spark machine; preparing n electrodes corresponding to a workpiece to be processed; wherein n is a positive integer;
2) clamping and correcting the first electrode by using a positioning jig, wherein the coordinate of the central point of the first electrode at the moment is determined by calculating the coordinate of the positioning point of the positioning part of the positioning jig, the first electrode connecting assembly is clamped and connected to a machining head of an electric spark machine, and then the first electrode connecting assembly is connected and fixed with the upper end face of the first electrode, so that the clamping and correcting of the first electrode are completed, and a first electrode module is obtained; the machining head of the electric spark machine drives the first electrode module to move in place, the first electrode module is placed on a first electrode module placing position of the electrode tool magazine, and marking is carried out for later use; then, clamping and correcting the second electrode by using a positioning jig to obtain a second electrode module, driving the second electrode module to move in place by a machining head of the electric spark machine, placing the second electrode module on a second electrode module placing position of the electrode tool magazine, and marking for later use; in this way, the positioning jig is used for clamping and correcting the nth electrode to obtain an nth electrode module, the machining head of the electric spark machine drives the nth electrode module to move in place, and the nth electrode module is placed on the nth electrode module placement position of the electrode tool magazine and marked for later use;
3) because n groups of electrode modules in the electrode tool magazine are corrected and the coordinates of the central points of the corresponding electrodes are determined, a machining head of the electric spark machine can be directly moved to an nth electrode module placing position of the electrode tool magazine to be clamped and connected with the nth electrode module, then a workpiece to be machined is machined, after machining is finished, the machining head is moved back to the nth electrode module placing position of the electrode tool magazine to be loosened and separated from the nth electrode module, the nth electrode module is placed back to the original position, then machining is finished, or the clamping and connecting device is connected with another electrode module to continue to perform corresponding machining on the workpiece to be machined.
Further, in the step 2), the electrode module comprises an electrode and an electrode connecting assembly fixedly connected with the electrode; the electrode connecting assembly comprises a quick connector, a middle connecting piece and a conductive connecting piece; the lower part of the quick connector is fixedly connected with the middle connecting piece, the bottom surface of the middle connecting piece is fixedly connected with the upper end face of the electrode through metal adhesive glue, and the conductive connecting piece is connected between the middle connecting piece and the electrode, so that a conductive relation is established between the middle connecting piece and the electrode. Furthermore, the middle connecting piece is a hollow piece with a cross section shaped like a Chinese character 'kou', and the bottom of the middle connecting piece is provided with a glue adding hole.
Further, the electrode tool magazine is arranged above the side portion of the electric discharge machine workbench, a plurality of electrode module placing positions on the electrode tool magazine are arranged and arranged, a clamping groove is reserved in each electrode module placing position, the clamping groove corresponding to each electrode module placing position corresponds to each electrode module placing position, and the electrode connecting assembly of each electrode module is provided with a clamping portion.
Further, in the step 3), when the workpiece to be processed is processed, the method comprises the following steps: the center point coordinate of a workpiece to be machined clamped and arranged on a workbench of an electric spark machine is determined in advance, then an nth electrode module is moved to the center point coordinate of the workpiece, the center point of an nth electrode of the nth electrode module is aligned and superposed with the center point of the workpiece, the center point of the workpiece is set as a zero point coordinate (0, 0) of the workpiece, a relative coordinate system is established, and then according to the coordinate of a drawing corresponding to the workpiece, a machining mechanism of the electric spark machine drives the nth electrode module to move the nth electrode to a position needing to be machined, and electric spark machining is carried out.
The invention has the following advantages: the method can clamp and correct a whole set of multiple electrodes at one time in a centralized manner, form an electrode module which can be quickly and automatically clamped and connected with a machining head of an electric spark machine or can be separated from the machining head of the electric spark machine or can be loosened, then establish a tool magazine, and place the electrode module in the tool magazine in advance, so that the automatic electrode replacement machining of the electric spark machine can be realized through the automatic electrode replacement mode of the machining head of the electric spark machine. That is to say, to the condition that a work piece needs a set of a plurality of electrodes to process, can concentrate once only with all electrodes clamping correction backs, form a plurality of electrode module, place in advance in the electrode tool magazine, follow-up alright go the electrode tool magazine directly by the electric spark machine through the processing aircraft nose and get the sword tool changing (promptly, change the electrode module) to realize full flow's automated processing, in the whole course of working, follow-up need not to carry out manual operation again and change the electrode. Therefore, the process of manually watching the machine can be saved, the configuration of workers in the machining process of the electric spark machine is optimized, and the labor is greatly saved.
The present invention will be further described with reference to the following description and embodiments in conjunction with the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
FIG. 2 is a first schematic view of the positioning fixture, the electrode connecting assembly and the electrodes;
FIG. 3 is a schematic structural diagram of an electrode magazine;
FIG. 4 is a second schematic view illustrating the positioning fixture, the electrode connecting assembly and the electrodes;
FIG. 5 is a schematic structural diagram of an electrode module formed after the electrode connecting assembly is connected to an electrode;
FIG. 6 is a schematic structural view of an electrode connecting assembly;
in the figure: positioning a jig 1; an electric spark machine 2; a work table 3; an electrode tool magazine 4; an electrode module placement site 5; an electrode connecting assembly 6; a processing head 7; an electrode 8; a quick connector 9; an intermediate connecting member 10; a conductive connecting member 11; glue addition holes 12.
Detailed Description
The technical solutions in the embodiments 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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
It should be noted that if directional indications (such as … …, which is up, down, left, right, front, back, top, bottom, inner, outer, vertical, transverse, longitudinal, counterclockwise, clockwise, circumferential, radial, axial) are provided in the embodiments of the present invention, the directional indications are only used for explaining the relative position relationship, motion condition, etc. of the components at a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first" or "second", etc. in the embodiments of the present invention, the description of "first" or "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 6, the automatic electrode changing method for an electric discharge machine based on electrode clamping correction provided in this embodiment includes the following steps:
1) arranging a positioning jig 1, wherein the positioning jig 1 is arranged on a workbench 3 of an electric spark machine 2; arranging an electrode tool magazine 4, wherein the electrode tool magazine 4 is provided with a plurality of electrode module placing positions 5; preparing n electrode connecting assemblies 6, wherein the electrode connecting assemblies 6 can be automatically clamped and connected or loosened with a machining head 7 of the electric discharge machine 2; preparing n electrodes 8, wherein the electrodes 8 correspond to a workpiece to be processed (not shown in the drawing); wherein n is a positive integer;
it should be noted that the electrode 8 corresponds to a workpiece to be machined, which means that the workpiece corresponds to one or more electrodes, and the electric discharge machining is performed by the electrodes 8. In addition, the structure of the positioning fixture 1 can refer to the structure of the positioning fixture 1 in "a method and a system 201911227052.1 for clamping and correcting an electrode of an electric discharge machine" mentioned in the background art, and details are not described herein. In addition, the electrodes 8 are all provided with reference tables, the specific structure of the reference tables is not described herein, and reference may be made to the electrode reference table in "a method and a system 201911227052.1 for clamping and correcting an electrode of an electric discharge machine" mentioned in the background art.
2) Clamping and correcting the first electrode by using a positioning jig 1, wherein the coordinate of the central point of the first electrode at the moment is determined by calculating the coordinate of the positioning point of the positioning part of the positioning jig 1, the first electrode connecting assembly is clamped and connected to a machining head of an electric spark machine, and then the first electrode connecting assembly is fixedly connected with the upper end face of the first electrode (the machining head of the electric spark machine drives the first electrode connecting assembly to move to the position where the bottom surface of the first electrode connecting assembly is in quick contact with the upper end face of the first electrode, a little point gap is just touched or left, and the first electrode can be fixedly connected by quick-drying glue), at the moment, the first electrode is fixedly connected by the first electrode connecting assembly and still keeps a horizontal alignment state, so far, the clamping and correcting of the first electrode are completed, and a first electrode module is obtained; the machining head of the electric spark machine drives the first electrode module to move in place, the first electrode module is placed on a first electrode module placing position of the electrode tool magazine, and marking is carried out for later use; then, clamping and correcting the second electrode by using a positioning jig to obtain a second electrode module, driving the second electrode module to move in place by a machining head of the electric spark machine, placing the second electrode module on a second electrode module placing position of the electrode tool magazine, and marking for later use; so analogize, use positioning jig to carry out the clamping correction to nth electrode, obtain nth electrode module, the processing aircraft nose of electric spark machine takes nth electrode module to remove to target in place, places nth electrode module to the electrode tool magazine on nth electrode module places the position, and marks, for subsequent use. Here, it can be known that, when the machining head of the electric discharge machine places the nth electrode module on the nth electrode module placement position of the electrode tool magazine, the machining head remembers the position so as to move to the same position for taking and placing the tool. Specifically, in step 2), the electrode module comprises an electrode 8 and an electrode connecting assembly 6 connected and fixed with the electrode 8; the electrode connecting assembly 6 comprises a quick connector 9, an intermediate connector 10 and a conductive connector 11; the lower part of the quick connector 9 is fixedly connected with the middle connector 10, the bottom surface of the middle connector 10 is fixedly connected with the upper end surface of the electrode 8 through metal adhesive glue, and the conductive connector 11 is connected between the middle connector 10 and the electrode 8, so that a conductive relation is established between the middle connector 10 and the electrode 8. More specifically, the middle connecting member 10 is a hollow member with a cross-section shaped like a Chinese character 'kou', and the bottom of the middle connecting member is provided with a glue adding hole 12.
It should be noted that, for clamping and correcting the electrode by using the positioning jig, the method is based on the electrode clamping correction method in "a method and a system 201911227052.1 for clamping and correcting the electrode of the electric discharge machine" mentioned in the background art: coordinates of a positioning point of a positioning part of the positioning jig are predetermined as (X1, Y1); placing the electrode on a positioning jig, wherein a first horizontal reference surface, a first vertical reference surface and a second vertical reference surface of a reference table of the electrode are respectively matched with a first horizontal positioning surface, a first vertical positioning surface and a second vertical positioning surface of a positioning part of the positioning jig, so that a transverse reference edge and a longitudinal reference edge are respectively superposed with a transverse positioning edge and a longitudinal positioning edge, the reference point of the reference table is superposed with the positioning point of the positioning part, and at the moment, the electrode is in a horizontal alignment state; when the length and the width of the reference platform of the electrode are known to be L and W, the distances from the center point of the electrode to the transverse reference side and the longitudinal reference side are respectively L/2 and W/2, and the coordinates of the center point of the electrode at the moment can be calculated and determined to be (X3 and Y3) according to the coordinates (X1 and Y1) of the positioning point of the positioning part of the positioning jig.
It should be emphasized here that the present application employs the electrode connecting assembly 6 instead of the connecting rod in the clamping correction of the electrode 8 using the positioning jig 1. The electrode connecting assembly 6 adopted by the application can be matched with a machining head 7 of the electric spark machine 2, so that automatic clamping connection or loosening separation is realized; this is an important improvement in the present application to achieve automated electrode replacement. The electrode connecting assembly 6 which can realize automatic quick clamping connection or release separation is connected with the electrode 8 in a clamping connection mode and corrected to form an electrode module, and the electrode module can be connected with a machining head 7 of the electric spark machine 2 in an accurate automatic quick clamping connection or release separation mode, so that a foundation is provided for subsequent automatic electrode replacement machining. The electrode connecting component 6 comprises a quick connector 9, an intermediate connector 10 and a conductive connector 11, because the three parts are respectively acted, the quick connector 9 is the key for realizing accurate automatic quick clamping connection or loosening disconnection with the machining head 7 of the electric discharge machine 2, is a mature component and can be purchased in the market, but the correct connection with the electrode cannot be realized only by the quick connector; the middle connecting piece 10 is matched, the upper part of the middle connecting piece 10 can be fixedly connected with the bottom of the quick connector 9, the bottom of the middle connecting piece 10 is flat, the quick-drying glue (metal adhesive glue, such as glue M20 special for hardware molds of Hufu workers) is quickly adhered and fixed with the upper surface of the electrode 8, and then the conductivity is established by the conductive connecting piece 11.
3) Because n groups of electrode modules in the electrode tool magazine 4 are corrected and the coordinates of the central points of the corresponding electrodes are determined, the machining head 7 of the electric spark machine 2 can be directly moved to the nth electrode module placing position of the electrode tool magazine 4 to clamp and connect the nth electrode module, then a workpiece to be machined is machined, after machining is finished, the machining head is moved back to the nth electrode module placing position of the electrode tool magazine 4 to release and separate from the nth electrode module, the nth electrode module is placed back to the original position, then machining is finished, or the clamping and connecting another electrode module continues to machine the workpiece to be machined correspondingly.
Specifically, electrode tool magazine 4 sets up in the lateral part top of 2 workstations 3 of electric spark machine, a plurality of electrode module on the electrode tool magazine 4 are placed position 5 and are arranged the setting, just, electrode module is placed position 5 and is reserved there is the joint groove, with the joint groove of electrode module is placed position 5 is corresponding, electrode module's electrode coupling assembling 6 is provided with joint portion. For the specific arrangement of the electrode tool magazine 4, the electrode tool magazine can be one layer or a plurality of layers in a step shape, and even the telescopic tool magazine can be used. The cutter placing form is various, and the cutter can be placed and replaced as long as the cutter placing and placing are convenient to realize.
Specifically, in the step 3), when the workpiece to be processed is processed, the method includes the following steps: the center point coordinate of a workpiece to be machined clamped and arranged on a workbench of an electric spark machine is determined in advance, then an nth electrode module is moved to the center point coordinate of the workpiece, the center point of an nth electrode of the nth electrode module is aligned and superposed with the center point of the workpiece, the center point of the workpiece is set as a zero point coordinate (0, 0) of the workpiece, a relative coordinate system is established, and then according to the coordinate of a drawing corresponding to the workpiece, a machining mechanism of the electric spark machine drives the nth electrode module to move the nth electrode to a position needing to be machined, and electric spark machining is carried out.
It should be noted that, the present disclosure relates to an alignment problem in an automated machining process, for example, when an nth electrode module is placed in an nth electrode module placement position of an electrode tool magazine, a coordinate of a central point of an electrode of the nth electrode module is determined, and then after a machining head of an electric discharge machine is clamped and connected to the nth electrode module, the nth electrode module may be moved to a coordinate of a central point of a workpiece, so that the central point of the electrode of the nth electrode module is aligned and overlapped with the central point of the workpiece; and then establishing a relative coordinate system, and processing the corresponding position of the workpiece according to the coordinate of the workpiece corresponding to the drawing. It should be further noted that, in the machining process, the motion trajectory (including idle movement, tool taking and placing, machining, and the like) of the machining head of the electric discharge machine is realized by programming, and programming can be performed in advance according to different workpieces or different machining conditions, which is a conventional technology of automatic machining and is not described herein again.
The present invention is not limited to the above embodiments, and other automatic electrode-changing machining methods for an electric discharge machine based on electrode clamping correction, which are obtained by using the same or similar technical features as those of the above embodiments of the present invention, are within the scope of the present invention.
Claims (5)
1. An automatic electrode replacement processing method of an electric discharge machine based on electrode clamping correction is characterized by comprising the following steps:
1) arranging a positioning jig, wherein the positioning jig is arranged on a workbench of an electric spark machine; arranging an electrode tool magazine, wherein the electrode tool magazine is provided with a plurality of electrode module placing positions; preparing n electrode connecting assemblies, wherein the electrode connecting assemblies can be automatically clamped and connected or loosened with a machining head of an electric spark machine; preparing n electrodes corresponding to a workpiece to be processed; wherein n is a positive integer;
2) clamping and correcting the first electrode by using a positioning jig, wherein the coordinate of the central point of the first electrode at the moment is determined by calculating the coordinate of the positioning point of the positioning part of the positioning jig, the first electrode connecting assembly is clamped and connected to a machining head of an electric spark machine, and then the first electrode connecting assembly is connected and fixed with the upper end face of the first electrode, so that the clamping and correcting of the first electrode are completed, and a first electrode module is obtained; the machining head of the electric spark machine drives the first electrode module to move in place, the first electrode module is placed on a first electrode module placing position of the electrode tool magazine, and marking is carried out for later use; then, clamping and correcting the second electrode by using a positioning jig to obtain a second electrode module, driving the second electrode module to move in place by a machining head of the electric spark machine, placing the second electrode module on a second electrode module placing position of the electrode tool magazine, and marking for later use; in this way, the positioning jig is used for clamping and correcting the nth electrode to obtain an nth electrode module, the machining head of the electric spark machine drives the nth electrode module to move in place, and the nth electrode module is placed on the nth electrode module placement position of the electrode tool magazine and marked for later use;
3) because n groups of electrode modules in the electrode tool magazine are corrected and the coordinates of the central points of the corresponding electrodes are determined, a machining head of the electric spark machine can be directly moved to an nth electrode module placing position of the electrode tool magazine to be clamped and connected with the nth electrode module, then a workpiece to be machined is machined, after machining is finished, the machining head is moved back to the nth electrode module placing position of the electrode tool magazine to be loosened and separated from the nth electrode module, the nth electrode module is placed back to the original position, then machining is finished, or the clamping and connecting device is connected with another electrode module to continue to perform corresponding machining on the workpiece to be machined.
2. The automatic electrode-changing machining method for the electric discharge machine based on the electrode clamping correction as claimed in claim 1, wherein in the step 2), the electrode module comprises an electrode and an electrode connecting assembly fixedly connected with the electrode; the electrode connecting assembly comprises a quick connector, a middle connecting piece and a conductive connecting piece; the lower part of the quick connector is fixedly connected with the middle connecting piece, the bottom surface of the middle connecting piece is fixedly connected with the upper end face of the electrode through metal adhesive glue, and the conductive connecting piece is connected between the middle connecting piece and the electrode, so that a conductive relation is established between the middle connecting piece and the electrode.
3. The automatic electrode changing machining method of the electric discharge machine based on the electrode clamping correction as claimed in claim 2, wherein the middle connecting piece is a hollow piece with a cross section in a shape like a Chinese character 'kou', and a glue adding hole is formed in the bottom of the middle connecting piece.
4. The automatic electrode changing machining method for the electric discharge machine based on the electrode clamping correction as claimed in claim 1, wherein the electrode tool magazine is arranged above a side portion of a workbench of the electric discharge machine, a plurality of electrode module placing positions on the electrode tool magazine are arranged, a clamping groove is reserved in each electrode module placing position and corresponds to the clamping groove of each electrode module placing position, and an electrode connecting assembly of each electrode module is provided with a clamping portion.
5. The automatic electrode-changing machining method for the electric discharge machine based on the electrode clamping correction as claimed in claim 1, wherein in the step 3), when the workpiece to be machined is machined, the method comprises the following steps: the center point coordinate of a workpiece to be machined clamped and arranged on a workbench of an electric spark machine is determined in advance, then an nth electrode module is moved to the center point coordinate of the workpiece, the center point of an nth electrode of the nth electrode module is aligned and superposed with the center point of the workpiece, the center point of the workpiece is set as a zero point coordinate (0, 0) of the workpiece, a relative coordinate system is established, and then according to the coordinate of a drawing corresponding to the workpiece, a machining mechanism of the electric spark machine drives the nth electrode module to move the nth electrode to a position needing to be machined, and electric spark machining is carried out.
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| CN204673100U (en) * | 2015-06-13 | 2015-09-30 | 巨轮股份有限公司 | A kind of planer-type high-precision numerical control EDM shaping machine structure of optimal design |
| CN210188756U (en) * | 2019-06-19 | 2020-03-27 | 昆山飞亚精密模具有限公司 | Quick clamping and positioning device for circular electrode |
| CN110756931A (en) * | 2019-12-04 | 2020-02-07 | 东莞市迪蒙数控机械有限公司 | Electric discharge machine electrode clamping correction method and system |
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