KR100221643B1 - Diamond tool and making equipment by plating method - Google Patents

Abstract

2. Description of the Related Art In a diamond abrasive for polishing the edges of cut surfaces of automobiles, windshields, plate glasses, liquid crystal glasses, etc., abrasives of abrasive grains which serve to abrade the corners of glass or the like are continuously abraded in plating liquids such as nickel and copper Diamond abrasive grains) are suspended and settled, and electroplated or electrolessly contracted to form a uniformly thick diamond abrasive portion on an elliptical groove formed in the periphery of the abrasive grain, and an apparatus for manufacturing the same.

Description

A diamond abrasive article manufactured by contracting method and its manufacturing apparatus

FIG. 1 is a partially cut-away perspective view showing a structure of a polishing tool for polishing a conventional glass cut surface or the like.

FIG. 2 is a partial cross-sectional view of a conventional diamond electrodeposited by electroplating.

FIG. 3 is a partial cross-sectional view of the inventive electrodeposited electrodeposited electrodeposition process.

FIG. 4 is an exploded perspective view of a stationary support plate for supporting and fixing a plurality of drill holes for electrodepositing the drill bit of the present invention.

FIG. 5 is an example in which the fixed support plate of FIG. 4 according to the present invention is combined with a polishing tool and installed in a plating vessel.

Figures 6a, b and c are diagrams illustrating formation of diamond fine particles deposited on the surface of a softening material according to the present invention.

FIG. 7 is an actual enlarged view of a diamond abrasive grain portion produced by the apparatus according to the present invention; FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

A: Plating vessel (EEL CUTTER) 1:

2: groove 3:

4: Axis 5: "D" and "I"

6: Fixing nut 7: Belt pulley

8: Main pulley 9: Belt

10: Chem 11: Up and down operation bar

12: stirrer 13: electrode

The present invention relates to a disk-shaped diamond wheel (abbreviated as abrasive grains) for abrading cutting edges and corners of a glass or the like using an electroplating method, and a manufacturing method thereof. Generally, when cutting automobile windshield glass, plate glass, liquid crystal glass, etc., the cutting surface and sharp edges are sharp and sharp irregularities are formed. Therefore, considering the safety, it is necessary to round this portion, A method of manufacturing a polishing tool generally used in the above-mentioned conventional method is a method in which a metal powder and diamond abrasive grains are mixed and charged into a three-piece abrasive mold, Sinter at high temperature. Since the mold is thermally deformed at this time, the economical wastefulness of disposing the mold generally after one use of the mold and the dimension and shape of the formed abrasive ball are incompatible with the original mold, so that it is troublesome to rework the abrasive segment by a known discharge method after sintering In order to remove the above drawbacks and to manufacture the drill bit more economically, as shown in FIG. 2, the diamond drill bit has been manufactured by a method of electrodepositing (electrically fixing) only a single diamond to the diamond block, In the case of manufacturing by electron sintering method, a mold is required for each product, and further, a discharge process is performed, and only one product is required to be manufactured at a time, so that the manufacturing cost is excessively high and the productivity is remarkably low. In the case where the fine granular diamond is electrodeposited only by a single layer, If only de-fine grinding eliminated there is short-lived because the disadvantages this sphere life, generally does not almost used except for special uses abrasive sphere produced by the above production method. Accordingly, it is an object of the present invention to provide an abrasive blank which is much more productive and economical than a conventional diamond abrasive blank manufacturing method, and has a long service life of the abrasive ball, and a manufacturing method thereof. That is, according to the present invention, the self-supporting property of diamond and metal powder is dispersed in a nickel or copper plating solution filled in a container of a certain size, and the abrasive grains are formed only in the abrasive portion by the electric contracting method or the chemical plating (electroless plating method) The electrodeposited layer of the present invention is deposited on the surface of the substrate at a predetermined thickness along the concave surface formed at the front end of the abrasive grains, thereby solving the problems of the related art, and the embodiments will be described in detail with reference to the accompanying drawings.

The radius of the concave groove (1) is calculated by the radius of the concave surface of the concave groove due to the electrodeposition of the diamond fine particles when the composite electrodeposited plating is performed on the convex surface of the concave groove (1) The groove is formed in consideration of this, and it is usually set to a value obtained by adding the composite plating thickness (diamond electrodeposition thickness). As a manufacturing method for manufacturing the above-described abrasive grains, it is not necessary to perform coplanar plating for the remainder, leaving only the grooves 2 to be subjected to coplanar plating. 4 and 5 for the purpose of forming a diamond abrasive grinding wheel 3 having a concave surface recessed into a thick ellipse of multiple layers as shown in FIG. 3, a plurality of grinding wheels 4 are formed on a shaft 4 having a constant diameter, And "I" type in which only the grooves 2 formed on the outer circumferential surface of the abrasive tool 1 are exposed and the abrasive body 1 and the plurality of abrasive grains 1 are supported and fixed while the harness 1 is inserted through the abrasive tool 1, The fixing support plate 5 is made of an insulating material (high-strength synthetic resin or the like) that does not conduct electricity so that the diamond can not be fixed during the electrodeposition, is inserted through the shaft 4, and then the fixed support plate 5 is maintained in a fixed state Number One end of the shaft 4 is fixed by a fixing nut 6 so that the belt pulley 7 is interlocked with the main pulley 7a of the shaft of the reduction motor 8 and the belt 9, The cam 10 which is eccentric to the center of the shaft 4 is mounted integrally with the shaft 4 at the end of the shaft 4 and the upper and lower operation bars 11 are freely rotatably provided at the tip of the cam 10, A plurality of drill holes 1 supported and fixed by the fixed support plate 5 are reciprocated upward and downward by the vertical movement of the deceleration motor 11, The shaft 4, on which the stationary support plate 5 supporting and fixing the harness is mounted on the shaft, is rotated at a reduced speed. A plurality of stirrers (12), which are known to float the diamond fine particles and the metal fine particles, are mounted on an amount of money in the electroplating vessel (A), and the diamond granules and the metal granules The apparatus is configured to be easily electrodeposited on the groove (2) of the harness (1). In this figure, reference numeral 13 denotes an electrode made of nickel or copper. The outer circumferential surface shape of the conventional polishing tool 1 will be described with reference to an embodiment of the present invention in which the elliptical grooves 2 are recessed and the grindstone 3 having a uniform thickness can be electrodeposited on the recessed surfaces, It is important to obtain a composite plating layer having a constant thickness when the abrasive grains are electrodeposited in two or more layers while allowing the abrasive grains to be evenly distributed on the elliptical grooves 2 of the elliptical grooves 2 to be formed with the grinding stone portion 3 (composite plating layer) In order to do so, as shown in FIGS. 4 and 5 of the accompanying drawings, a plurality of drill holes 1 inserted between the stationary support plate 5 and the stationary support plate 5 are slowly rotated (rotated) The upper and lower operation bars 11 that are mediated by the cement 10 are moved up and down so that one end of the shaft 4 is fixed at a constant height and the other end is vertically moved Than the fixed height The abrasive grains (diamond granules and metal granules) are uniformly settled on the ellipsoidal portions of the grooves, as in "a", "b", and "c" Since the abrasive grains are heavier than the specific gravity of the plating liquid, the plating liquid is stirred with the agitator 12 to suspend the abrasive grains so that the abrasive grains are repeatedly settled and suspended so that the abrasive grains are continuously lowered And an abrasive having a grindstone portion made of a composite plated layer having a desired thickness of a plurality of layers is produced. In the present invention, since the hardness of the metal for joining the abrasive grains of the grinding wheel is only a single layer of abrasive grains in the general electrodeposition tool, it is sufficient to merely toughly bond the abrasive grains. However, the multi- And brittleness are required. In other words, since it is required to have the same polishing performance as that of the conventional sintered polishing tool, it is also important to have a similar hardness, brittleness, and bonding force so that the self-polishing action of the abrasive grains can be smoothly performed.

The plating solution composition and composite plating conditions used in the present invention are as follows.

- Plating solution composition table -

Nickel sulfate 250 - 350 g / ℓ

Nickel chloride 35 - 45 g / ℓ

Boric acid 45 g / l

Diamonds 10 g / ℓ

Wetting agent (sodium laureth sulfate) 2 ml / l

Polishing agent (first and second polish)

Hardness modifier

- Physical conditions of work -

PH 3.0 - 5.0

Temperature 30 - 50 ℃

Current density 0.5 - 5 A / dm ²

Number of revolutions of jig 0.1PPM

Number of reciprocating motion 4 times / PPM

Electrodeposition time 4 - 40 hours (depends on the thickness of the composite plating layer)

Stirring RPM 400 (60 占 propeller)

As described above, since the abrasive grains of the diamond abrasive for glass polishing are uniformly layered by electrodeposition as described above, and a plurality of abrasive grains can be electrodeposited at the same time during one operation, the abrasive grains having a simple structure, Is an invention capable of mass production.

Claims (1)

Among the abrasive tools produced by electroplating or electroless plating methods in which abrasives such as diamond, cubic, and tungsten carbide are dispersed alone or in an electroplating solution such as nickel or copper or an electroless plating solution, abrasive grains of two or more layers (1) is formed on the shaft (4) with a groove (2) formed in an ellipse at its periphery in order to obtain a plurality of diamond grinders in a single operation, Quot; I "type fixed support plate 5 made of an insulating material which supports and fixes each abrasive grain between the abrasive grains 1 and the abrasive grains 1, And the eccentric cam 10 is provided integrally with the shaft at the other end of the shaft 4 so as to be rotatably connected to the main pulley 7a of the decelerating motor 8 and the eccentric cam 7, And an oval-shaped upper bar (11) is provided at the tip of the cam (10) Installs a kite harness (1) with a grinding wheel almond portion 3 inside the plating vessel (A) as well as the plating vessel (A), open diamond harness manufacturing apparatus which hayeoseo naeseol a stirrer 12 therein.