JP2015062985A - Truing dressing method of super abrasive grain wire saw and manufacturing method of super abrasive grain wire saw using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely apply truing dressing to a super abrasive grain wire saw.SOLUTION: A method for applying truing dressing to a super abrasive grain wire saw 2 having a super abrasive grain 4 covered with a conductive film 5 comprises the steps of: removing the conductive film 5 covering a projection edge of the super abrasive grain 4; and exposing a surface of the super abrasive grain 4.

Description

  The present invention relates to a truing dressing method for a superabrasive wire saw and a method for manufacturing a superabrasive wire saw using the same.

  As a superabrasive wire saw, a superabrasive wire saw in which superabrasive grains are fixed to a core wire with a binder is known. This superabrasive wire saw has a very good sharpness. Furthermore, since a water-soluble or water-insoluble grinding fluid is used, the machine and its surroundings can be reduced, and the working environment can be improved. And since a super-abrasive wire saw with a length of several kilometers or more can be manufactured, a large number of wafers can be sliced at once, compared to the multi-wire saw method of the free abrasive method using slurry. A cutting speed several times or more can be obtained. The superabrasive wire saw is made of, for example, a material made of polyethylene, nylon, polyester, or the like, or a material obtained by reinforcing these materials with glass fiber or carbon fiber as a core wire. It is fixed by electrodeposition (see, for example, Patent Document 1).

  As another superabrasive wire saw, a monofilament or multifilament such as carbon fiber, aramid fiber, alumina fiber, boron fiber, silicon carbide fiber, or silicon-titanium-carbon-oxygen-based inorganic fiber is used as a core wire. Superabrasive grains are fixed to the outer periphery by plating or resin (for example, see Patent Document 2).

  In order to dress a superabrasive wire saw, it is known to press a dressing stone against the superabrasive wire saw (see, for example, Patent Document 3).

  Furthermore, as a method of dressing a superabrasive wire saw, it is known to press a GC grindstone against the superabrasive wire saw (see, for example, Patent Document 4).

  Further, there is known a dressing method for a superabrasive wire saw in which pipe-like superabrasive layers called beads are fixed to a core wire used for cutting stone, concrete or the like at a predetermined pitch. A rotating grindstone is dressed in a spiral shape by applying a twisting force to an endless superabrasive wire saw while rotating it, and spirally dressing (for example, see Non-Patent Document 1).

Japanese Patent Laid-Open No. 8-126953 JP-A-9-155631 JP-A-11-28654 JP 2000-158319 A

Dr. Fritsch HP, superabrasive wire saw dressing device, Dressing and Sharpening Machine SAM 205/210, etc. [Search August 16, 2013], Internet <URL http://www.dr-fritsch.de/e_menue .html>

  However, the conventional method described above has a problem that the superabrasive wire saw cannot be sufficiently dressed. In addition, there was a problem that truing was hardly possible.

  The present invention has been made to solve these problems.

  A truing dressing method for a superabrasive wire saw according to the present invention is a method for truing and dressing a superabrasive wire saw having superabrasive grains covered with a conductive film, wherein the protruding end of the superabrasive grain is removed. This is a truing / dressing method for a superabrasive wire saw in which the conductive film to be covered is removed to expose the surface of the superabrasive grain.

  In the present invention, the superabrasive wire saw can be reliably truing-dressed.

1 is a schematic diagram of a truing / dressing device for a superabrasive wire saw according to Embodiment 1. FIG. It is a schematic diagram which shows the electrode in the truing dressing apparatus of the superabrasive wire saw of FIG. 6 is a schematic diagram showing electrodes in a truing / dressing apparatus for a superabrasive wire saw according to Embodiment 2. FIG. 6 is a schematic diagram showing electrodes in a truing / dressing apparatus for a superabrasive wire saw according to Embodiment 3. FIG. 6 is a schematic diagram showing electrodes in a truing / dressing apparatus for a superabrasive wire saw according to Embodiment 4. FIG. It is sectional drawing of the superabrasive wire saw before dressing. It is sectional drawing of the superabrasive wire saw before dressing. It is sectional drawing of the superabrasive wire saw after dressing. It is sectional drawing of the superabrasive wire saw after dressing.

First, embodiments of the present invention will be listed and described.
The truing / dressing method of the superabrasive wire saw of the present application is a method for truing / dressing a superabrasive wire saw having superabrasive grains covered with a conductive film, and is a conductive material that covers the protruding end of the superabrasive grains. The film is removed to expose the surface of the superabrasive grains.

  In such a truing / dressing method for a superabrasive wire saw, the superabrasive wire saw can be reliably trued / dressed.

  Preferably, the superabrasive wire saw is a superabrasive wire saw in which superabrasive particles are fixed to the surface of the core wire with a binder.

  Preferably, the binder is any one of a metal bond, a resin bond, a vitrified bond, and electrodeposition.

  Preferably, the conductive film includes at least one selected from the group consisting of metals, alloys, resins containing a conductive substance, glasses containing a conductive substance, and ceramics containing a conductive substance.

  Preferably, the method for removing the conductive film is any one of a shot blast method, an electric discharge machining method, and an electrolytic method.

Preferably, a superabrasive wire saw is inserted into the cylindrical body and the conductive film is removed therein.
Preferably, the superabrasive grains from which the conductive film has been removed are superabrasive grains that directly affect the processing of the workpiece.

  Preferably, the most protruding end including the superabrasive grains exposed from the conductive film protrudes from the conductive film.

  Preferably, the method for producing a superabrasive wire saw performs truing / dressing of a superabrasive wire saw using any one of the above truing / dressing methods of a superabrasive wire saw.

  Embodiments of the present invention will be described below with reference to the drawings. In the following embodiments, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated. Moreover, it is also possible to combine each embodiment.

(Embodiment 1)
FIG. 1 is a schematic diagram of a truing / dressing apparatus for a superabrasive wire saw according to the first embodiment. FIG. 2 is a schematic view showing electrodes in the truing / dressing apparatus of the superabrasive wire saw of FIG.

  Referring to FIGS. 1 and 2, the truing / dressing apparatus 1 according to the first embodiment includes an electrolyte solution tank 10, power supply pulleys 20 and 30, an electrode 40, and a working tank 50. The truing dressing apparatus 1 has a structure in which the positive electrode and the negative electrode of the plating apparatus are arranged in reverse.

  An electrolyte solution is stored in the electrolyte solution tank 10. As the electrolytic solution, an electrolytic solution for plating and an electrolytic solution for electrolytic etching can be employed. An electrolytic solution supply path 11 and an electrolytic solution recovery path 12 are connected to the electrolytic solution tank 10, and the electrolytic solution is supplied from the electrolytic solution tank 10 to the working tank 50 through the electrolytic solution supply path 11. The electrolytic solution in the working tank 50 is collected in the electrolytic solution tank 10 via the electrolytic solution recovery path.

  The power supply pulleys 20 and 30 feed out or wind up the superabrasive wire saw 2. The superabrasive wire saw 2 has a core wire 3, a binding material 6, a superabrasive grain 4 fixed to the core wire 3 by the binding material 6, and a conductive film 5 covering the superabrasive grain. The power supply pulleys 20 and 30 are connected to the positive pole of the power source. The core wire 3 preferably has electrical conductivity, and the material of the core wire 3 is most preferable. Superabrasive wire saw 2 is fed in the direction indicated by arrow 2c.

  The bonding material 6 is any one of a metal bond, a resin bond, a vitrified bond, and electrodeposition. The conductive film 5 includes at least one selected from the group consisting of metals, alloys, resins containing conductive substances, glasses containing conductive substances, and ceramics containing conductive substances.

  Superabrasive wire saw 2 is immersed in electrolytic solution 60 in working tank 50. The superabrasive wire saw 2 moves in the electrode 40. The electrode 40 is connected to the negative pole of the power supply. The electrode 40 is provided with a slit 41, and the electrolyte circulates from the inside of the cylindrical electrode 40 to the outside through the slit 41 and further from the outside to the inside. The slit 41 may be replaced with a hole. Furthermore, the slit 41 may not be provided. The electrode 40 is made of iron, for example.

  The electrolytic solution 60 is stored in the working tank 50. The electrolytic solution 60 is supplied from the electrolytic solution supply path 11, and the electrolytic solution 60 overflowing from the working tank 50 is collected in the electrolytic solution tank 10 through the electrolytic solution recovery path 12.

  By adjusting the cylindrical diameter of the electrode 40, the clearance between the superabrasive wire saw 2 and the electrode 40 can be adjusted.

  When current flows from the superabrasive wire saw 2 to the electrode 40 side in the truing dressing apparatus 1 shown in FIGS. 1 and 2, the material constituting the conductive film 5 is ionized on the superabrasive wire saw 2 side as an anode. . Thereby, a part of the electroconductive film 5 constituting the protrusion is removed as it passes through the electrode 40.

  In the truing dressing apparatus 1 configured in this way, a part of the conductive film 5 can be removed by electrolysis, so that truing dressing can be performed reliably.

(Embodiment 2)
FIG. 3 is a schematic diagram showing electrodes in a truing / dressing apparatus for a superabrasive wire saw according to the second embodiment. Referring to FIG. 3, in Embodiment 2, a part of conductive film 5 is removed using a so-called brush plating apparatus. In order to remove the conductive film 5 with the brush-like electrode 45, plus and minus are connected in reverse as compared with the case where brush plating is performed. Specifically, the superabrasive wire saw 2 is connected to the positive pole of the power source, and the electrode 45 is connected to the negative pole. Since the brush plating apparatus is used, the electrolytic solution tank 10, the electrolytic solution supply path 11, the electrolytic solution recovery path 12, and the working tank 50 described in the first embodiment are unnecessary, and the electrolytic solution 60 is immersed in the electrode 45. I am looking into it.

  The conductive film 5 is partially removed by electrolysis by adjusting the contact distance or contact pressure between the electrode 45 and the superabrasive wire saw 2. In the protrusion part on the outer periphery of the superabrasive wire saw 2, the contact distance with the electrode 45 is long or the contact pressure becomes large, so that the conductive film 5 can be removed in the protrusion part. The electrode 45 may be either a brush shape or a brush shape, but the electrode 45 is preferably in contact with the superabrasive wire saw 2 from all directions.

(Embodiment 3)
FIG. 4 is a schematic diagram showing electrodes in a truing / dressing apparatus for a superabrasive wire saw according to the third embodiment. Referring to FIG. 4, in Embodiment 3, a part of conductive film 5 is removed using a die-shaped electrode 46. The superabrasive wire saw 2 is connected to the positive pole of the power source, and the electrode 46 is connected to the negative pole. The electrolytic solution tank 10, the electrolytic solution supply path 11, the electrolytic solution recovery path 12, the working tank 50, and the electrolytic solution 60 described in the first embodiment are used, and the electrode 40 of the first embodiment is replaced with a die-shaped electrode 46. Has been.

(Embodiment 4)
FIG. 5 is a schematic diagram showing electrodes in a truing / dressing apparatus for a superabrasive wire saw according to the fourth embodiment. In the fourth embodiment, a part of the conductive film 5 is removed using the plate electrode 47 or the round bar electrode 48. Superabrasive wire saw 2 is connected to the positive pole of the power source, and flat plate electrode 47 and round bar electrode 48 are connected to the negative pole. The electrolytic solution tank 10, the electrolytic solution supply path 11, the electrolytic solution recovery path 12, the working tank 50, and the electrolytic solution 60 described in the first embodiment are used, and the electrode 40 of the first embodiment is a flat plate electrode 47 or a round bar electrode. 48 has been replaced.

  6 and 7 are cross-sectional views of the superabrasive wire saw before dressing. 8 and 9 are cross-sectional views of the superabrasive wire saw after dressing. Referring to FIGS. 6 and 7, superabrasive grain 4 is covered with conductive film 5 and bonding material 6 before dressing. The binding material 6 may not be covered. 7 and 9, a plating layer 300 such as brass plating or copper plating is formed on the surface of the core wire 3. After the dressing according to each embodiment, the superabrasive grains 4 are exposed from the conductive film 5 and the bonding material 6 as shown in FIGS. 8 and 9, so that the sharpness of the superabrasive wire saw 2 is improved.

  Although the embodiment of the present invention has been described above, the embodiment shown here can be variously modified.

  Although the electrolysis method has been shown as a method for removing the conductive film 5 electrochemically, the method is not limited to this, and the method for removing the conductive film 5 is a physical shot blasting method or an electric discharge machining method. There may be.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention can be applied to truing and / or dressing of superabrasive wire saws.

  DESCRIPTION OF SYMBOLS 1 Dressing device, 2 superabrasive wire saw, 3 core wire, 4 superabrasive grain, 5 electroconductive film, 6 binder, 10 electrolyte tank, 11 electrolyte supply path, 12 electrolyte recovery path, 20, 30 power supply pulley, 40, 45, 46 electrode, 41 slit, 47 plate electrode, 48 round bar electrode, 50 working tank, 60 electrolyte.

Claims (9)

A method for truing and dressing a superabrasive wire saw having superabrasive grains covered with a conductive film,
A truing / dressing method for a superabrasive wire saw in which the conductive film covering the protruding end of the superabrasive grain is removed to expose the surface of the superabrasive grain.   The truing / dressing method for a superabrasive wire saw according to claim 1, wherein the superabrasive wire saw is a superabrasive wire saw in which the superabrasive grains are fixed to the surface of a core wire with a binder.   The truing / dressing method for a superabrasive wire saw according to claim 1, wherein the binder is any one of a metal bond, a resin bond, a vitrified bond, and electrodeposition.   The said electroconductive film | membrane contains at least 1 type chosen from the group which consists of a metal, an alloy, resin containing an electroconductive substance, glass containing an electroconductive substance, and ceramics containing an electroconductive substance. 4. A truing / dressing method for a superabrasive wire saw according to any one of items 3 to 4.   The truing / dressing method for a superabrasive wire saw according to any one of claims 1 to 4, wherein the method for removing the conductive film is any one of a shot blast method, an electric discharge machining method, and an electrolytic method. .   6. The truing / dressing method for a superabrasive wire saw according to claim 5, wherein the superabrasive wire saw is inserted into a cylindrical body and the conductive film is removed therein.   The truing of the superabrasive wire saw according to any one of claims 1 to 6, wherein the superabrasive grains from which the conductive film has been removed are superabrasive grains that directly affect machining of a workpiece. Dressing method.   The truing / dressing method for a superabrasive wire saw according to claim 7, wherein the most protruding end including the superabrasive grains exposed from the conductive film protrudes from the conductive film.   A method for manufacturing a superabrasive wire saw, wherein the truing / dressing method for a superabrasive wire saw is performed using the truing / dressing method for a superabrasive wire saw according to any one of claims 1 to 8.

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