KR101338379B1 - Cutting and grinding apparatus for cutting wheel - Google Patents

Abstract

Disclosed is a scribing cutting wheel processing and polishing apparatus which improves the problems caused by the time required for precise uneven processing of the cutting wheel, the unevenness of the edge unevenness formation, and the thermal effect. Cutting wheel processing polishing apparatus according to the present invention is a bottom plate is installed on the upper surface of the disk rotating body mounting plate to rotate the grinding member for processing the edge of the edge portion, the fixing base extending upward on the upper surface of the bottom plate, It is coupled to the vertical direction and fixed and fixed to have the same angle as the edge angle while being moved up and down along the fixture, a motor mounted on the fixed plate so that the rotary shaft toward the grinding member, coupled to the rotary shaft to fix the cutting wheel And a reaction force means mounted to a support extending upward from the bottom plate or the support to pull the fixing plate upward. At this time, the fixing plate may be designed in a structure that is rotated and fixed to each other. In addition, the stator is coupled to the main shaft is installed on the bottom plate is preferably installed so as to be spaced apart from the bottom plate, and a cooling water supply nozzle for supplying the cooling water to the grinding member side is further provided, the lower side of the grinding member to the cooling water drainage tube Additional drainage systems may be installed. In addition, a plurality of pin holes into which the pin is inserted is formed up and down on the fixing table to determine the lower limit point of the fixing plate by the pin and the pin hole, and a spring or a ball or hydraulic cylinder may be used as the reaction means.

Description

Cutting and grinding apparatus for cutting wheels for ultra precision machining

The present invention relates to a processing polishing device, and more particularly, to a cutting edge edge of a scribe cutting wheel made of diamond or cemented carbide, which is used to draw a scribe line on a surface of an amorphous material such as a glass substrate for display to facilitate cutting and separating. The present invention relates to a processing polishing apparatus for processing a portion into an uneven shape having a certain pattern.

The scribing cutting wheel is a tool used for cutting brittle materials such as glass substrates, and draws cutting lines on the surface of the workpiece and generates cracks of a predetermined depth. At this time, by applying shear force to both sides of the crack line (cut line) generated on the surface of the substrate, the vertical crack reaches the surface on the opposite side of the cutting to cut the substrate.

The scribing cutting wheel forms a specific pattern of irregularities formed on the cutting edge edge of the wheel for improved machinability, and the irregularities formed on both sides of the cutting edge surface can be formed only by very precise machining. . In order to precisely form irregularities of the edge cutting edges, existing apparatuses are formed by using a cutting groove forming apparatus of a discharge machining type or a cutting groove forming apparatus of a laser type.

In the case of electric discharge machining or laser, brittleness due to heat generated during machining has been raised as a problem. Another molding machine used a grinding wheel to form the cutting groove, but the depth and spacing was not constant, which acted as a cause of product quality degradation.

This conventional cutting wheel processing apparatus exposed the following problems.

First, in the cutting wheel grinding and manufacturing apparatus using a metal bond wheel having a large diameter, it is difficult to secure the reproducibility of the surface roughness due to the difference in the amount of diamond particles between the upper layer and the lower layer.

Second, the load method uses the press method in most machining operations. This pressurization method has a disadvantage in that it is difficult to maintain a constant pressure, and in the case of high speed grinding, very little machining is difficult.

Third, when high-speed grinding and processing is performed, it is difficult to form irregularities of a certain depth on the surface of the product.

Fourth, complex jigs are required to process the cutting edges at the required angles.

Fifth, because the jig must be equipped for processing the internal diameter products of various sizes, there is a disadvantage that the work is not only interrupted but also takes a lot of time due to the replacement time of the jig.

The present invention has been made to solve the above problems, scribing cutting wheel that improves the problems due to the time required for precise uneven machining of the cutting edge, the unevenness of the surface irregularities formation, the heat effect The purpose is to provide a processing and polishing apparatus.

The present invention to achieve the above object,

In the device for processing and polishing the edge portion on the outer circumferential surface of the cutting wheel having a shaft hole in the center,

A bottom plate having a disk rotating body mounting unit installed on the upper surface to rotate the grinding member for processing and polishing the edge portion;

Fixtures extending upward on the upper surface of the bottom plate;

A fixing plate which is coupled in a vertical direction of the fixing stand and fixed to have an angle equal to the edge angle while being vertically moved and fixed along the fixing stand;

A motor mounted to the fixed plate such that a rotating shaft fixing the cutting wheel faces the grinding member; And

It provides a cutting wheel processing polishing apparatus comprising a; reaction force means is mounted to the support plate extending upward from the bottom plate or the holding table to pull the fixing plate upward.

At this time, the fixing plate is provided with a bracket having a structure that is rotated and fixed to each other, the bracket can be selectively sliding up and down along the groove formed on the side of the fixing stand.

In addition, the rotary shaft may further include a holder for fixing the cutting wheel, a protrusion protruding outward is formed on the outer peripheral surface of the holder, a locking groove corresponding to the protrusion may be formed on the shaft hole of the cutting wheel.

And the fixing stand is preferably installed so as to be spaced apart from the bottom plate by a predetermined height coupled to the main shaft installed on the bottom plate.

Alternatively, a cooling water supply nozzle for supplying cooling water to the grinding member is further provided, and a drainage system for discharging the cooling water through the cooling water drainage tube may be further installed at the lower side of the grinding member.

And it is preferable that a plurality of pin holes into which the pin is inserted is formed up and down in the fixing table to determine the lower limit point of the fixing plate by the pin and the pin hole.

In addition, a spring or a ball, hydraulic cylinder may be used as the reaction means.

Ultra-precision small cutting wheel processing polishing device made by the present invention,

First, since a dicing wheel, which is a small disk-shaped grinding member, is used instead of a large diameter metal bond wheel, there is no problem due to the difference in contact amount due to the even distribution of diamond particles between the upper and lower layers.

Second, the load method is different from the conventional pressure method. As the non-pressure contact method, the soft touch type using the spring device is applied, so that the grinding wheel mounted on the motor has the uneven shape of the surface of the dicing wheel, which is a disk-shaped grinding member. It moves finely and absorbs and alleviates the vibrations generated during processing by the spring, which not only prevents damage caused by shocks when using the press method, but also does not cause abnormal wear due to excessive pressure. It is a processing polishing device that can process very small amount even in the work.

Third, it is suitable for small quantity batch processing of various kinds having various sizes by high speed grinding.

Fourth, it is easy to adjust the angle of cutting of the edge of the cutting wheel in the grinding process because it is easy to adjust the angle of the motor holder and the fixed plate, and complicated jig is not necessary to adjust the polishing angle. It has merit.

The cutting wheel processing device as described above can manufacture a very excellent and reliable cutting wheel with fast working time and excellent surface shape, and can make a big contribution to the efficiency and productivity of the work space as a compact processing equipment compared to the existing one. It is a device that can.

1 is a view showing a cutting wheel to be polished in the device according to the invention, (a) is a perspective view, (b) is a cross-sectional view taken along line AA,
2 is a perspective view showing a processing polishing apparatus according to the present invention,
3 is an enlarged perspective view of the fixing part of FIG. 2, and
4 is a view illustrating a structure in which a cutting wheel is mounted to the holder of FIG. 3.

Hereinafter, a polishing apparatus according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

Referring to Figure 1, the cutting wheel 10 for processing or polishing in the processing polishing apparatus according to the present invention is made of a diamond or cemented carbide material, the shape of a disc formed with a shaft hole 11 in the center, the outer side of the disc An edge portion 12 having a constant angle is formed on the circumferential surface to protrude from the center. Therefore, this invention is the apparatus which grind | polishes this edge part 12.

Referring to FIG. 2, the processing polishing apparatus 100 according to the present invention is a small cutting wheel processing polishing apparatus which is much smaller than a conventional apparatus, and includes a base plate 110 on the bottom plate 110. All components will be installed.

On the upper surface of the bottom plate 110, the main shaft 120 and the disk rotating body mounting unit 130 is installed. The main shaft 120 is a base for fixing, rotating, and adjusting the cutting wheel 10, and the disk rotating body mounting unit 130 fixes and rotates the cooling member 131 for grinding the cutting wheel 10. It has a supply and drainage function.

First, the main shaft 120 and the components coupled thereto will be described.

The main shaft 120 is coupled to the fixed base 140 is connected in parallel with the main shaft (120). The guide 140 is a guide for raising and lowering the motor 180 holding the cutting wheel 10, and is spaced apart from the bottom plate 110 by a predetermined height, and on both sides of the guide 140 for guiding. Groove 141 is formed.

The support 150 is coupled to one side of the upper end of the fixing stand 140 so as to extend upward, and the reaction force means 160 that pulls the motor 180 upward is coupled to the support 150. A spring is used as the reaction means 160. The spring is a means for preventing the cutting wheel 10 from being pressed by the polishing member 131 by the self-weight of the motor 180 to be polished in a pressure manner. The same effect can also be achieved by connecting. Alternatively, the support 150 may not be installed only in the fixing stand 140, but may be installed in the bottom plate 110 by direct acting.

Referring to FIG. 3, the fixing plate 170 is coupled to the other end of the fixing plate 140 in the vertical direction with respect to the fixing plate 140. The fixing plate 170 is coupled with the bracket 171 to be fitted into the groove 141 of the fixing table 140, and has a structure that is rotated at a predetermined angle with respect to the bracket 171. At this time, the fixing plate 170 is preferably provided with fixing means to maintain the rotation angle after the rotation. The fastening means may be constructed in a variety of ways, such as a ratchet form, a pin fixing method, an electric automatic method, and the like. Since the rotation angle is for forming the edge portion 12 angle of the cutting wheel 10 is used by rotating at the same angle as the edge portion 12 angle. Alternatively, the fixing plate 170 may be designed to be fixed to the bracket 171 at the same angle as the edge portion 12 of the cutting wheel 10. In addition, the reaction plate 160 extending from the support 150 is connected to the stationary plate 170 to have a reaction force against the weight of the stationary plate 170 and the motor 180.

In addition, the bracket 171 is moved up and down is also provided a structure that can be fixed at a specific height. That is, the pinhole 142 is formed in the fixing stand 140 at intervals up and down, thereby inserting the pin 143 into the pinhole 142, thereby preventing the fixing plate 170 from falling by its own weight.

The motor 180 is mounted to the fixed plate 170 as described above, and the rotation shaft 181 of the motor 180 penetrates through the fixed plate 170 and protrudes to the opposite side. Therefore, a through hole 172 through which the rotation shaft 181 passes is formed at the center of the fixing plate 170.

Passing rotary shaft 181 is coupled to the holder 190 is fixed to the cutting wheel (10). The holder 190 is a pin that is inserted into the shaft hole 11 of the cutting wheel 10. After being inserted, the holder 190 is disposed on the outer circumferential surface of the holder 190 as shown in FIG. 4 to fix the cutting wheel 10. The protrusion 191 may be formed. The protrusion 191 may have a spring embedded therein to elastically act, and the locking groove 13 may be formed in the shaft hole 11 of the cutting wheel 10 to catch the protrusion 191.

Referring back to FIG. 2, the disc rotating body mounting unit 130 is provided to rotate the grinding member 131, and is disposed below the work area of the holder 190, and the inside of the disc rotating body mounting unit 130. There is a built-in drainage facility (not shown) for collecting the cooling water injected from the cooling water supply nozzle 210 and discharged through the cooling water drainage tube 220. Of course, a motor (not shown) for rotating the grinding member 131 is provided inside the disk rotating body mounting unit 130.

The ultra-precision small cutting wheel processing polishing apparatus 100 of the present invention having the configuration as described above is the most important technology for forming the uneven pattern of the surface of the cutting wheel 10 of a very precise size. The uneven pattern of the edge portion 12 of the cutting wheel 10 is formed throughout the cutting wheel 10 at a constant depth and interval.

This uneven pattern is a braking operation performed after scribing by causing vertical cracks on the substrate surface when the cutting wheel 10 is pressed against the surface of the substrate to perform cutting while drawing the cutting line by rolling motion. It serves to facilitate the separation of the substrate.

In order to form irregularities on the surface of the cutting wheel 10 by using the scribing cutting wheel processing polishing apparatus 100 according to the present invention, a disk-shaped disc grinding body is mounted on a disk rotating body mounting unit 130 for grinding. 1, which is fixed to the dicing wheel, which is the grinding member 131, and then is ground to the holder 190 installed at the end of the rotation shaft 181 of the motor 180 installed on the fixing plate 170 connected to the fixing plate 140. After mounting the two cutting wheels 10, the cutting wheel 10 is moved to the working position along the groove 141 of the fixing table 140 on the grinding member 131, and then the pins do not move. Fixing to the fixture 140 using (143). After fixing the motor 180 to the fixed plate 170, the rotational speed of the motor 180 equipped with the cutting wheel 10 is adjusted to perform grinding processing for a predetermined time. At this time, the surface roughness of the grinding wheel 10 is greatly affected by the surface roughness and the rotational speed of the grinding member 131 to determine the surface roughness range of the final product according to the use of the cutting wheel 10 before operation To determine the rotational speed of the appropriate grinding member 131 and the motor 180 is carried out. Therefore, the processing polishing apparatus 100 according to the present invention is provided with a separate controller (not shown), the controller of the motor 180 for rotating the cutting wheel 10 and the motor for rotating the grinding member 131 It controls the speed of rotation and controls the components that can be provided electrically.

In particular, in order to form a precise concave-convex shape on the surface of the cutting wheel 10, in the present invention, the cutting wheel 10 for processing provided on the end of the motor 180 and the disk rotating body mounting table for grinding used for the processing of the wheel ( The grinding operation is performed by contacting the surface of the dicing wheel, which is the grinding member 131 installed at 130, in which the cutting wheel 10 is in contact with the surface of the grinding member 131, which is the mating member, by a non-pressurized contact method. The reaction means 160, which moves finely according to the surface irregularities and is connected to the motor fixing plate 170, absorbs vibrations and shocks generated when contacting the surface irregularities of the dicing wheel, which is unreasonable to the irregularities of the surface of the cutting wheel 10 that has been ground. It prevents damage to the surface of the cutting wheel 10 by preventing the force is applied.

In addition, the emergency stop button 230 may be necessary in connection with a malfunction or safety of the device 100.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined by the appended claims. .

10: cutting wheel 11: shaft hole
12: edge portion 13: hanging groove
100: cutting wheel processing polishing device 110: bottom plate
120: spindle 130: disc rotating body mounting table
131: grinding member 140: fixture
141: groove 142: pinhole
143: pin 150: support
160: reaction means 170: fixed plate
171: bracket 172: through hole
180: motor 181: rotary shaft
190: holder 191: protrusion
210: cooling water supply nozzle 220: cooling water drain tube
230: emergency stop button

Claims (7)

In the device for processing and polishing the edge portion 12 on the outer circumferential surface of the cutting wheel 10, the shaft hole 11 is formed in the center,
A bottom plate (110) on which a disk rotating body mounting unit (130) is installed on an upper surface to rotate the grinding member (131) for processing and polishing the edge portion (12);
Fixture 140 extending upward on the upper surface of the bottom plate 110;
A fixing plate 170 coupled to the vertical direction of the fixing stand 140 and fixed to have an angle equal to the angle of the edge portion 12 while being vertically moved and fixed along the fixing stand 140;
A motor 180 mounted to the fixed plate 170 such that the rotary shaft 181 on which the cutting wheel 10 is mounted faces the grinding member 131; And
Reaction means (160) is mounted to the support plate 150 extending upward from the bottom plate 110 or the support base 140 to pull the fixing plate 170 upward, wherein the fixing unit 140 is Cutting wheel processing polishing apparatus, characterized in that coupled to the main shaft 120 is installed on the bottom plate 110 is spaced apart from the bottom plate 110 by a predetermined height. According to claim 1, wherein the fixing plate 170 is provided with a bracket 171 having a structure that is rotated and fixed to each other, the bracket 171 is along the groove portion 141 formed on the side of the holder 140 Cutting wheel processing polishing device, characterized in that sliding up and down. According to claim 1, The rotary shaft 181 is further provided with a holder 190 for fixing the cutting wheel 10, the protrusion protruding outward on the outer peripheral surface of the holder 190, the spring is embedded therein 191 is formed, the cutting wheel processing polishing apparatus, characterized in that the engaging groove 13 corresponding to the protrusion 191 is formed on the inner shaft hole (11) of the cutting wheel (10). delete According to claim 1, Cooling water supply nozzle 210 for supplying the cooling water to the grinding member 131 side is further provided, the lower side of the grinding member 131 to discharge the cooling water through the cooling water drain tube 220 Cutting wheel processing polishing apparatus, characterized in that the drainage is formed. According to any one of claims 1 to 3, The pin 140 and the pin hole 142 is inserted into the fixing plate 140 is formed up and down so that the lower limit point of the fixing plate 170 pin and pin holes Cutting wheel processing polishing apparatus, characterized in that determined by. The grinding wheel processing polishing apparatus according to claim 1, wherein a spring, ball or hydraulic cylinder is used as the reaction means (160).

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