TWI301779B - - Google Patents

Description

1301779 V. Technical Description of the Invention (1) The present invention relates to a device for electrical discharge machining technology, a wire electrode used therefor, and a method for manufacturing the same, and more particularly to a wire-cut electrical discharge machining device and a wire electrode for electrical discharge machining And its preparation method, which has the surface roughness of the object to be processed, the duck has improved the advantages of the chip removal effect during the electric discharge machining and the narrow slit processing which can perform the cutting width smaller. [Prior Art] Please refer to the first figure, which is a conventional wire-cut EDM, including: ^

a pedestal 910 has a supply portion 9 11 , a take-up portion 9 1:2 and a working space 9 丨 3 interposed therebetween; a line electrode 920 ′ is supplied from the supply portion 911 to enter the working space The retracting unit 912 is re-entered in 913.藉 By the combination of the above components, a workpiece 903 is cut or cut into a slit by a conventional electric discharge machining technique.

However, the wire electrode 9 2 0 of the conventional wire-cut electric discharge machining apparatus has a cylindrical shape and its sectional surface is circular. Referring to the second figure, assuming a diameter d of 50 μm and a discharge gap of 6 μm on both sides, the theoretical cut visibility X is 60 μm. If the wire/electrode 92 is made of copper, the price is fortunate and 'but the strength is poor. The minimum diameter of the commercial commercial is about 〕 〇 micron. If the wire electrode 9 2 0 is changed to tungsten &, the price is more expensive, but The strength is better, and the minimum diameter for commercial use is about 3 〇. Therefore, the industry has been hoping to develop a wire electrode 920 having a diameter of less than 30 μm, and it is better if it can be achieved with a cheaper material.

Page 5 1301779 V. Invention Description (2) Addition: 面面9: Re-reading the second picture 'The workpiece to be processed during the electrical discharge machining 93 〇 some tiny metals are:: will be produced when not discharging - There are cases where the chip removal is not smooth. SUMMARY OF THE INVENTION It is necessary to develop new products to solve the above disadvantages. In the case of providing an electric discharge machining apparatus and a surface, there is grinding due to the fact that a plurality of fine particles are in contact with each other, and the surface roughness can be improved by the finer octagonal field which can grind the surface. The second object of the present invention is to provide a wire electrode for electrical discharge machining and a method for manufacturing the same, and in the electrical discharge machining, the micro-particles 2 can take away the metal chips, so that the chip removal effect is good. In addition, the wire electrode of the electric discharge machining apparatus and the electric discharge machining method and the manufacturing method thereof can perform the slit machining with a smaller cutting width. The present invention provides a wire electrode for an electric discharge machining device and an electric discharge machining, and a method for manufacturing the same, relating to an electric discharge machining device, comprising: a base having a wire supply portion, a wire take-up portion, and a work therebetween Space; / / Β a wire electrode, which is supplied from the wire feeding portion into the working space and then enters the wire take-up portion; a pair of pressing rollers 'for deforming the wire electrode from a round rod shape into a flat shape Forming a first surface and a second surface, and the first surface is substantially parallel to the second surface; the pair of pressing rollers are driven by at least one of the 2 roller driving devices, 1301779 3) a pair of particle supply devices eject a plurality of micro-particles on the surface; and the plurality of micro-dissections on the surface of the e-discharge process, the cross-section of the upper system is rectangular and has steps related to the electrical discharge machining The detailed description of the above-mentioned object of the present invention and the accompanying drawings are as follows. [Embodiment] Please refer to the first embodiment of the third to fifth figures, which includes a wheel 30 and a The susceptor is supplied with the susceptor 10 having a working space 1 3; </ RTI> for attaching to the first surface and the second plane to the first surface and the second surface granules are non-conductive. A wire electrode, which is fixed in a plurality of tiny particles, and has a line width and a line thickness. The method for preparing a wire electrode mainly comprises: preparing a particle step and completing a step. With advantages, it is not difficult to gain insights from the selected embodiments described below. DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail with reference to the drawings: The present invention relates to an electric discharge machining apparatus, a base 10, a line electrode 20, and a pair of pressing means 40. The wire supply portion 11, the wire receiving portion 1 2 and the wire electrode 20 are supplied from the wire portion 1 1 and enter the working space 13 and then enter the wire receiving portion 12; The pressing roller 30 is configured to press the wire electrode 20 into a flat shape by a round rod shape, and form a first surface 21 and a second surface 22, and the surface 21 and the second surface 22 are formed. The pair of squeezing rollers 30 are driven by at least one squeezing roller driving device 3; the pair of granule supply device 40 is for facing the first plane 21 and the 1301779. 5, invention description (4) - --- The two planes 22 eject a plurality of fine particles 41 and attach them to the first surface 21 and the second surface 22; in addition, the plurality of fine particles 41 are not electrically conductive. In this embodiment, a pair of particle attachment rollers 5 又 are further disposed, which are located near the discharge direction of the pair of particle supply devices 40 for pressing and adhering the plurality of fine particles 41 to the first surface 21 of the wire electrode 2〇. And the second surface 22; further, the pair of particle attachment rollers 50 are driven by at least one particle attachment roller drive element 51. Of course, the particle-adhering roller 5 〇 can also be omitted, and is replaced by the pair of squeezing rollers 30, that is, the squeezing roller 3 〇 simultaneously has the wire electrode 20 extruded into a flat shape, and the plurality of fine particles 41 The function of directly squeezing into the wire electrode 20 to attach (or snap-in) thereto. The fine particles 41 must be non-conductive and preferably have a function of abrading the surface, so that they can be selected from industrial diamonds, silicon carbide, boron carbide, cerium oxide, and the like. Next, please refer to the sixth and seventh figures, which are the second embodiment of the present invention, and the basic structure thereof is the same as the first embodiment described above, and details are not described herein. Of course, in order to increase the adhesion effect, the method further includes: a pair of glue supply elements 60 for applying a glue to the first surface 21 and the second surface 22 of the wire electrode 20 (the surface is not shown, First, the plurality of fine particles U are firmly adhered to the first surface 21 and the second surface 22. Among them, the glue is selected from industrial glue, ultraviolet glue (commonly known as UV glue), heat hardening glue, glue of similar function. If UV glue is used, it needs to be equipped with an ultraviolet light source (not shown). The procedure is to first flatten the wire electrode 20, then spray the UV glue on the first 1301779. 5. Invention description (5) Surface 21 and The second surface 22 is further sprayed with a plurality of fine particles 41, which are pressed by the particle-attaching roller 50, and then hardened by irradiation with an ultraviolet light source to firmly adhere the plurality of fine particles 41 to the wire electrode 20. Of course, as shown in the sixth figure, in the above-mentioned embodiment, it is possible to apply a coolant or a lubricating liquid to the processing gap between the wire electrode 20 and the workpiece 9390, which can help to improve. The processing speed and quality of the wire electrode 20 to be processed 930. For the electric discharge machining method of the present invention, please refer to the fifth figure, which is a step of the processing method of the first embodiment, which includes, in order, a preparation step 71, a rolling step 72, an upper particle step 74, and a completion step 75. Wherein: in the preparation step 71, a line electrode 2 is prepared, which has a circular cross section and has a diameter D (refer to the fourth figure); the rolling step 72 utilizes a pair of squeeze rollers 3 Extruding the wire electrode 20 to form a first surface 21 and a second surface 22, the first and second surfaces 21 and 22 being substantially parallel;

The upper particle step 74 is performed by spraying a plurality of fine particles 41 toward the first surface 21 and the second surface 22 by a particle supply device 4, and extruding the plurality of fine particles 41 through a pair of particle attachment rollers 50. And attaching the first surface 21 and the second surface 22 J of the wire electrode 20 to the finishing step 75, fixing a plurality of fine particles 41 on the first surface 21 and the second surface 22 of the wire electrode 20, and the wire electrode The cross section of the 〇 is generally rectangular and has a line width W and a line thickness τ (refer to the fourth and sixth figures); in addition, the line width W is larger than the diameter d, but the line thickness τ is smaller than the diameter D . 1301779, invention description (6) Alternatively, a step of sizing may be added before the upper particle step 74, and the steps of the processing method of the second embodiment are obtained. The sizing step 73 is performed by sizing the first surface 21 and the second surface 22 of the pair of glue supply members 6 电极 the electrode 20. Regarding the actual operation mode of the present invention, first, #8th and ninth diagrams, no: when the electric discharge machining is performed, the wire electrode 2〇 is continuously supplied from top to bottom while the workpiece 9 3 0 is gradually moved. Cutting a groove having a cutting width X by means of electrical discharge machining, the groove being a line thickness τ plus both sides

The discharge gap G (as shown in the tenth figure); the smaller the line thickness τ, the smaller the cut width X obtained by the processing. In particular, please refer to the tenth to twelfth drawings, due to the force of the workpiece 93: the workpiece surface 931 has a plurality of protrusions 933 (as shown in FIG. 11), so that the overall surface roughness is not good, but Because the present invention is provided with a plurality of micro-particles 41, two major effects are produced: (1) the protrusions 9 3 3 can be scraped or smoothed, so that the processed surface 913 of the workpiece 930 is flat. The surface roughness of the machined surface 913 is greatly improved. (2) The metal shavings 932 generated during the electric discharge machining can be taken away, and the discharge is smoother, and the problem of accumulation of metal shavings is avoided. Therefore, in the twelfth figure, the machined surface 913 after being scraped off by the plurality of fine particles 41 has become relatively flat, and even though some of the minute particles 4 1 are subjected to electric discharge machining in the wire electrode 20, The object 93 rubs and falls off' without losing the effect of its friction protrusion 9 3 3 (as shown in Fig. 11). Further, due to the fact that the surface of the wire electrode 2 of the present invention is provided with a plurality of tiny

L3〇1779 ___________ Friends, invention instructions (7) 羯 41 41, can also be used as a "line". Furthermore, since the wire electrode 20 of the present invention has been squashed, the wire thickness T 匕 is originally small in diameter D. Therefore, it is possible to use a wire electrode which is relatively inexpensive and has a large size, and after being extruded, becomes a cutting width. The smaller slit of X and the second embodiment are described in detail by the preferred embodiment, for the scope of the invention. Any simple modifications and variations are possible without departing from the spirit of the invention. It is true that GiJtr can make the patent application of the present invention well known to those skilled in the art. , and have complied with the provisions of the Patent Law

1301779 Simple description of the drawing [Simple description of the drawing]

Fig. 1 is a perspective view showing a conventional wire-cut electrical discharge machining device. Fig. 2 is a partial cross-sectional view showing a conventional wire-cut electrical discharge machining. The second drawing is a perspective view of a first embodiment of the present invention, and the fourth drawing is the first embodiment of the present invention. 5 is a partially enlarged perspective view of a processing method of a first embodiment of the present invention. A sixth enlarged view of a second embodiment of the present invention is a second embodiment of the present invention. The eighth embodiment is a schematic diagram of the wire cutting process of the present invention. The ninth drawing is a schematic view of the wire cutting process of the present invention. The tenth drawing is a partial enlarged schematic view of the wire cutting process of the present invention. The figure shows the enlarged view before grinding. The eleventh picture shows the enlarged sound picture after the grinding at the circle of the tenth figure. [Illustration of the symbol of the figure] Heart 11, 9 11 supply part 1 3, 9 1 3 working space 21 first surface 3 0 squeeze roller - 4 0 particle supply device 50 particle attachment roller 6 0 glue supply element 7 2 rolling step 7 4 upper particle step 9 3 0 to be processed

10, 910 base 1 2, 91 2 take-up part 20, 920 line electrode 22 second surface 31 squeeze roller drive device 41 tiny particles 5 1 particle attachment roller drive component 71 preparation steps 7 3 gluing step 7 5 completion steps

1301779 Simple description of the drawing 9 3 1 Machining surface 933 protrusion D diameter W line width 932 metal shavings X cutting width G discharge gap T line thickness

Claims (1)

1301779 --^^J^26587 /, 申凊 patent scope 1 - an electric discharge machining device, including: WRT ... a 〆, wq mouth · ----- work space /, a supply line, - take off The part and the intervening entry: the ΐ part ΐ the supply part for "entering the working space and then re-forming: = rolling m the line electrode is deformed by a round rod shape::: 丨 forming a first surface And a second surface, G to small ί: the second surface is substantially parallel; the pair of squeeze rollers are driven by the squeezing roller drive; ', a pair of particle supply means for facing the first plane and The second surface ejects a plurality of micro-particles to adhere to the first surface: the second surface; and the plurality of micro-particles are non-conductive. μ. The electric discharge processing apparatus according to claim i, a plurality of particles, and a pair of particle-attaching rollers are disposed adjacent to the nozzle-out direction of the pair of particle supply devices for pressing and adhering the plurality of micro-particles to the first surface and the second surface of the wire electrode; The particle attachment roller system 3 is driven by at least one particle attachment roller The electric discharge machining device according to the first aspect of the patent application, which further includes: ', a pair of glue supply elements for coating the first surface and the second surface of the wire electrode A glue is applied whereby the plurality of fine particles are firmly attached to the first surface and the second surface. ' 4 (as in the electric discharge machining apparatus described in claim 1 of the patent application, wherein 1H Page 14 1301779 Amendment 曰 Case No. 93126587 VI. Scope of Application The plurality of fine particles are selected from one or more of industrial diamonds, silicon carbide, stone houses and cerium oxide. A method for preparing an electric discharge machining wire electrode, comprising the following steps: Preparation step: preparing a wire electrode having a diameter in a cross section, and a circular 'rolling step··using a pair Squeezing the roller, forming the wire electrode to form a first surface and a second surface, the two are substantially parallel; &amp; granules step · using a particle supply device to spray a plurality of tiny particles toward the first surface and the second surface And squeezing the plurality of fine particles by a pair of particle attachment rollers and adhering to the first surface and the second surface of the wire electrode; completing the step of fixing the plurality of the first surface and the second surface of the wire electrode a fine particle, and the wire electrode has a rectangular cross section and has a line width and a line thickness; further, the line width is larger than the diameter, but the line thickness is smaller than the diameter. [6] The method for manufacturing a wire electrode for electric discharge machining according to the fifth aspect of the patent application, wherein a step of applying a glue may be added before the step of the upper particle, wherein the step of applying the glue is to use a pair of glue wave supply elements, the line is The first surface and the second surface of the electrode are glued.