KR20030076889A - The method adult form of disk cup grind and disk cup grind - Google Patents

Abstract

PURPOSE: A method of forming an abrasive disk cup and the abrasive disk cup are provided to simplify the working process through press forming and reduce the manufacturing cost by mass production. CONSTITUTION: A method of forming an abrasive disk cup(10) comprises processes of cutting a metal panel, in the size of a hand grinder-abrasive disk cup; forming the cut metal panel by a press having a mold of an abrasive disk cup shape; forming angles to an upper inner bent-up portion(13) and a lower outer peripheral bent-up portion(14) of the formed abrasive disk cup through punching; forming a protruded brim(18) to the bottom middle part of the abrasive disk cup through cutting; fitting a connecting pipe(17) to a middle through-hole(16) of the top of the abrasive disk cup and combining the connecting pipe to a hand grinder through fusing; and attaching super light alloys to the sides of the protruded brim formed at the bottom of the abrasive disk cup.

Description

The method adult form of disk cup grind and disk cup grind}

The present invention relates to a method for forming an abrasive disc cup, which enables the production of an abrasive disc cup simply and easily, and more particularly, by manufacturing a press of an abrasive disc cup coupled to a hand grinder capable of polishing a stone or the like. The present invention relates to an abrasive disc cup forming method and a product thereof, which are invented to simplify the process and to reduce production cost and manufacturing time.

The conventional method of forming the grinding disc cup of the hand grinder is to mold the polishing disc cup by casting the mold into the mold firstly, and to cut the outer and bottom surfaces with a separate cutting tool, and to attach the diamond tip to the bottom third. The cup will be molded.

When the abrasive disc cup is cast into a mold, the connecting pipe located at the upper center is molded together and a nut is formed by forming a screw on the inner surface thereof.

Conventional abrasive disc cups are molded as described above, so not only a separate mold is required but also a firing process and a cutting process, which takes a lot of time in each process, and each process is performed by hand. As a result, a large number of personnel and labor costs are required and there is an inefficient problem in the production of the product.

The present invention has been made in view of the above problems, and an object of the present invention is to press-molize an abrasive cup without casting and cutting, thereby simplifying a work process and reducing a production cost by mass production.

The present invention provides a process for forming a metal panel into a press having a mold having an abrasive disc cup shape, a process of punching an angle to be formed at an upper inner bent portion and a lower outer bent portion of the molded abrasive disc cup, and the abrasive disc. It characterized in that the polishing disk cup forming method comprising the step of welding so as to be coupled to the hand glider by inserting the connector pipe in the central through hole of the cup, and attaching the cemented carbide to the bottom surface of the polishing disk cup at a predetermined interval.

The present invention can be mass-produced products, and by cutting only the bottom portion without cutting as a whole to reduce the processing time to simplify the work process and reduce the production cost.

1 is a manufacturing process diagram of an abrasive disc cup according to the present invention.

Figure 2 is a partially cutaway perspective view of the abrasive disc cup according to the present invention.

3A, 3B and 3C are partially cutaway perspective views according to an embodiment of the present invention.

Figures 4a, 4b is a manufacturing process of the abrasive disc cup of another embodiment of the present invention.

<Code Description of Main Parts of Drawing>

10: polishing disc cup 11: body

12: Dust blowing hole 13: Internal bending part

14: outer bend 15, 15 ': groove

16: Through 17, 17 ': Connector

18: protrusion 19: cemented carbide tips

Hereinafter, an embodiment of the molding process of the present invention will be described in detail with reference to the accompanying drawings.

First embodiment

Cutting the metal panel to the size of a hand grinder polishing dispenser;

Molding the cut metal panel into a press having a mold having an abrasive disc cup shape;

Punching an angle to an upper inner surface bent portion and a lower outer peripheral surface bent portion of the shaped abrasive disk cup;

Cutting to form a rim in the center of the bottom surface of the abrasive disc cup;

Welding the connector tube to be inserted into the center hole of the upper surface of the abrasive disc cup so as to be coupled to the hand grinder;

Characterized in that the polishing disk cup forming method comprising the step of attaching the cemented carbide at a predetermined interval on both sides of the projection formed in the center of the bottom of the polishing disk cup.

In the molding process of the present invention carried out as described above, the metal panel is first cut to a size of a hand grinder polishing dispenser and prepared to be pressed by a press.

The cut metal panel is placed on a press having a mold having an abrasive disc cup shape and pressed by a press.

At this time, the middle portion of the upper surface of the grinding disk cup is pressed to form a disk cup shape to form a through hole so that the subsequent connection holes can be fitted.

In the shape of the shaped abrasive disc cup, the upper edge portion and the inner circumferential edge portion of the bottom surface are curved without being formed in an angle.

Press punching with a separate punch so that an angle is formed in the upper inner surface bent portion and the lower outer peripheral surface bent portion of the molded abrasive disk cup.

In the punched portion, grooves are formed along the upper inner circumferential surface and the lower outer circumferential surface of the abrasive disc cup.

After punching as described above, the upper outer peripheral edge and the lower inner peripheral edge of the abrasive disc cup are angled.

After forming corners having an angle at the top and bottom of the abrasive disc cup, a cutting process is performed using a separate cutting tool so that a protrusion is formed at the center of the bottom.

The abrasive disc cup is formed by attaching two cemented carbides (artificial diamond) in two rows at predetermined intervals on both sides of the frame-shaped protrusion formed at the center of the bottom of the abrasive disc cup.

The grinding disc cup of the present invention made as described above is characterized by being simple and easy to improve the production amount by several times compared to the existing working process by selecting a method to press the molding by the press.

Example 2

In addition, as another embodiment of the present invention,

Primary molding the metal panel cut to a predetermined size so that the center portion protrudes upward;

Drawing a connecting pipe by pressurizing secondary press forming both the lower bottom center part and the upper outer center part with a press to form the primary molded panel into an abrasive disc cup shape;

Cutting a hole through an upper end of a connection pipe of the molded abrasive disc cup;

Pressurizing the connecting tube through which the upper end is perforated to increase the thickness of the drawn connecting tube;

Punching an angle to an upper inner surface bent portion and a lower outer peripheral surface bent portion of the shaped abrasive disk cup;

Forming a nut part by forming a screw thread on an inner surface of the connection pipe formed integrally with the center of the upper surface of the abrasive disc cup;

Characterized in that the polishing disk cup forming method comprising the step of attaching the cemented carbide to the bottom surface of the polishing disk cup at a predetermined interval.

Referring to the second embodiment of the present invention carried out in detail as follows.

First embodiment and a metal panel is first cut to a predetermined size.

The press is pressed to protrude the cut metal panel in a smooth state to form a primary.

Second press molding is performed on both sides of the lower bottom center and the upper outer center of the first molded metal panel to form a polishing disc cup.

At this time, the shape of the body of the abrasive disc cup is formed and the upper portion of the connector is drawn.

A separate cutting machine cuts the upper end of the connection pipe drawn to the upper end of the molded abrasive disc cup to allow the hole to be cut.

The connecting tube is drawn and has a thin thickness.

The upper end of the connecting tube is pressed from the top with a press to compress the thickness of the drawn connecting tube to be thick.

The nut is formed by forming a screw thread on the inner surface of the thickly formed connecting tube.

The upper inner surface bent portion and the lower outer circumferential bent portion of the shaped abrasive disk cup are formed in a curved shape.

Punching is performed by using a separate punching machine so that an angle is formed in the upper inner surface bent portion and the lower outer peripheral surface bent portion of the polishing disk cup to form an angle at the upper outer peripheral surface edge and the lower inner peripheral surface edge of the polishing disk cup.

Completing the polishing disk cup consisting of a step of attaching the cemented carbide to the bottom surface of the polishing disk cup at a predetermined interval.

The diameter of the bottom surface of the polishing disk cap completed in the molding process of Example 1 and Example 2 can be formed large or wide at the time of manufacture, and the arrangement of the cemented carbide attached to the bottom surface also shown in Figures 3a, 3b, It can be formed in various forms such as 3c.

Looking at the configuration of the abrasive disk cup of the present invention molded in the above process as follows.

A body 11 having a shape of a conventional abrasive disc cup 10;

A plurality of dust ejection holes 12 formed on an outer circumferential surface of the body 11;

Grooves 15 and 15 'formed in the upper inner bent portion 13 and the lower outer bent portion 14 of the body 11, respectively;

A connection pipe 17 welded to a through hole 16 formed in a central portion of an upper surface of the body 11;

A protrusion 18 protruding in a circular shape in the center of the bottom surface of the body 11;

A polishing disk cup 10 having two rows of ordinary cemented carbide polishing tips 19 is attached to both sides of the projections 18 formed at the center of the bottom surface.

As another embodiment of the present invention, the abrasive disc cup is characterized in that the abrasive disc cup is attached to the cemented carbide polishing tip 19 in a row. As another embodiment of the present invention, the abrasive disc cup 10 is characterized by an abrasive disc cup having a cemented carbide abrasive tip 19 attached to the bottom surface in the form of a screw.

The present invention configured as described above is coupled so that the motor shaft of the hand grinder is connected to the inner surface nut portion of the connecting pipe 17 formed on the top of the abrasive disc cup 10.

At this time, since the nut part is formed with the left screw and is coupled with the motor shaft, the rotation of the polishing disc cup rotates in the right direction, thereby preventing loosening. This coupling method is a commonly used connection method.

In addition, the through-hole 16 formed in the center of the upper body 11 and the lower end of the connecting pipe 17 is formed in an elliptical shape to fit the connecting pipe to the through-hole 16 and to weld the upper and lower surfaces of the connecting part. The oval is made of a welded part, but the connection and the hole are supported by each other, so there is no waste, and safety accidents can be prevented during use.

A plurality of dust ejection holes 12 formed on the outer circumferential surface of the body 11 is to allow the dust generated when polishing the stone or the like to flow out.

The inner circumferential surface of the upper edge and the bottom of the body by forming the recesses 13 and 14 by pressing a separate puncher to the upper inner bent portion 15 and the lower outer bent portion 15 'of the body 11 of the present invention. The corner is formed with a shade to make the appearance simple and beautiful.

The protrusion 18 protruding in the shape of a circle in the center of the bottom of the body 11 is formed by pressing the body and then slightly cutting the inner and outer peripheral surfaces of the protrusion 18 using a separate cutting machine so that the protrusions are formed at the center of the bottom surface. To form.

The cemented carbide-coated abrasive tips 19 formed with powder powder are attached to two rows or one row on both sides of the projections 18 formed at the center of the bottom surface.

The protrusions are formed to have a height smaller than that of the polishing tip 19 attached to one side so as not to be disturbed during polishing.

As another embodiment of the present invention, as shown in Figure 3b, the polishing disk cup, the cemented carbide polishing tip 19 is attached to the bottom in a row can be used to polish the stone.

As another embodiment of the present invention, as shown in FIG. 3c, the polishing disc cup may be attached to the cemented carbide polishing tip 19 in the form of a screw on the bottom thereof to polish the stone or the like.

The abrasive disc cup molded by the molding method of Example 2 of the present invention has the same structure as the abrasive disc cup molded by the molding method of Example 1, or when the connecting pipe 17 'is pulled out by a press to form a cap. After forming, the upper part was cut to form a through-hole, and the press was pressed to protrude the metal panel cut as shown in FIGS. 4A and 4B in a smooth state to form a primary disk. The lower bottom center portion and the upper outer center portion at both sides are press-molded by pressing to form a body shape of the abrasive disc cup 10, and the upper connector portion is drawn out, and the upper portion of the drawn connector upper portion is separately cut. It is to be cut so that the connecting pipe (17 ') having a through-hole.

Pressing the connecting pipe 17 'through the upper end through a press to go through the compression process so that the thickness of the drawn pipe is thick, and then forming a screw thread on the inner surface of the connecting pipe 17' to form a nut part, The process of attaching the cemented carbide to the bottom of the disc cup at regular intervals by forming an upper inner bent portion, a lower outer circumferential bent portion and a groove in the polishing disc cup 10 formed by other processes to form an angle at the outer circumferential edge and the lower inner circumferential edge Is the same as Example 1.

Thus, the present invention can be mass-produced by press-molding the abrasive disc cup to be bonded to the hand glider without casting, and the machining time can be shortened by cutting only the bottom part without cutting as a whole. Will have the effect of reducing the production cost by automating the production line.

Claims (5)

Cutting the metal panel to the size of a hand grinder polishing dispenser; Molding the cut metal panel into a press having a mold having an abrasive disc cup shape; Punching an angle to an upper inner surface bent portion and a lower outer peripheral surface bent portion of the shaped abrasive disk cup; Cutting to form a protrusion at the center of the bottom surface of the abrasive disc cup; Welding a connector tube to a center hole of the upper surface of the abrasive disc cup so as to be coupled to a hand glider; Polishing disk cup forming method comprising the step of attaching the cemented carbide at regular intervals on both sides of the projection frame formed in the center of the bottom surface of the polishing disk cup. The method of claim 1, The polishing disc cup may include: primary molding a metal panel cut to a predetermined size so that a central portion thereof protrudes upward; Drawing a connecting pipe by pressurizing secondary press forming both the lower bottom center part and the upper outer center part with a press to form the primary molded panel into an abrasive disc cup shape; Cutting a hole through an upper end of a connection pipe of the molded abrasive disc cup; Pressurizing the connection pipe through which the upper end is perforated to increase the thickness of the connection pipe drawn; Punching an angle to an upper inner surface bent portion and a lower outer peripheral surface bent portion of the shaped abrasive disk cup; Forming a nut part by forming a screw thread on an inner surface of the connection pipe formed integrally with the center of the upper surface of the abrasive disc cup; Polishing disk cup forming method comprising the step of attaching a cemented carbide alloy at a predetermined interval on the bottom surface of the polishing disk cup. A body 11 having a shape of a conventional abrasive disc cup 10; A plurality of dust ejection holes 12 formed on an outer circumferential surface of the body 11; Grooves 15 and 15 'formed in the upper inner bent portion 13 and the lower outer bent portion 14 of the body 11, respectively; A connection pipe 17 welded to a through hole 16 formed in a central portion of an upper surface of the body 11; A protrusion 18 protruding in a circular shape in the center of the bottom surface of the body 11; Polishing disc cups, characterized in that the ordinary cemented carbide polishing tips (19) are attached to both sides of the projections (18) formed on the bottom center portion. The method of claim 3, The polishing disc cup is a polishing disc cup, characterized in that the cemented carbide polishing tips 19 are attached in a row to the bottom. The method of claim 3, The abrasive disc cup 10, the abrasive disc cup, characterized in that the cemented carbide abrasive tip 19 is attached to the bottom surface in the form of a screw.