WO2016036178A1 - Cutting type hand grinder wheel - Google Patents

Abstract

Disclosed is a cutting type hand grinder wheel which: can maximize machinability by increasing a cooling efficiency during a grinding operation; has a plurality of cut grooves capable of checking a processed surface during the operation; and prevents the emission of heat and dust by closing the upper part of the cut grooves with a disc-type transparent cover or an individual-type transparent cover. The cutting type hand grinder wheel, according to the present invention, comprises: a plurality of cut grooves formed to be curved and/or diagonal in a circumferential direction from the center of a coupling hole formed in the center a disc unit; and an individual-type transparent cover made from an acryl or polycarbonate material and attached to the upper part of the disc unit by an adhesive such that a processed object can become see through while the upper part of the cut grooves is closed, wherein at least one cut groove is formed in the disc unit and a cut surface is formed in an inclined shape, and the individual-type transparent cover does not upwardly protrude and is attached by an adhesive so as to be placed on a stepped portion extensionally formed on the upper side of the cut grooves formed in the disc unit, thereby preventing heat and dust from being upwardly emitted and guiding the same according to a flow of a cutting rotational direction such that the heat and the dust can be emitted to the outside.

Description

Retractable Hand Grinder Wheel

The present invention relates to a cut-type hand grinder wheel having a plurality of cutout grooves that can increase the cooling efficiency during grinding operation to maximize cutting performance and check the machining surface during the work, and more particularly, heat and dust generated during machining. The present invention relates to an incision hand grinder wheel that is improved to release friction heat and dust more safely while blocking it from being delivered directly to the operator.

In general, the surface grinding process using a hand grinder wheel is a machining operation to maintain the flat state or various shapes required by cutting unnecessary protrusions generated on the surface of the joining portion, the processing portion or the molded portion of the structure.

Such a polishing wheel for processing is typically used by mounting to a hand grinder that the operator holds by hand as shown in FIG. In order to increase cutting force during the grinding process, the operator constantly presses the polishing wheel to the cutting surface, and excessive friction causes a lot of frictional heat to be generated, and the dust (machined powder, etc.) is released to the outside. There was a drawback to being transferred to the operator after the impact on the workpiece or stuck to the surface of the polishing wheel in part.

That is, the rise of heat generated when the abrasive wheel contacts and rotates to cut the machining surface leads to oxidation of the abrasive or damage to the machining surface, and the cutting efficiency decreases due to the increase in toughness due to frictional heat.

In addition, since the grinding wheel is in the form of an opaque disk, as shown in the attached physical picture of FIG. 10, the operator cannot see the surface of the cutting surface to be cut, so it is difficult to identify the machining part of the working position and only the unnecessary external periphery can be seen. there was.

In order to solve the above problems, a number of techniques have been proposed that make it possible to identify the machining surface while releasing frictional heat by drilling holes in the disc portion of the polishing wheel.

For example, Republic of Korea Patent Publication No. 10-0314287 (published on November 23, 2001) "Polishing wheel", and Patent No. 10-0540863 (January 11, 2006) "Abrasive wheel with a workpiece observation feature", Registered Patent No. 10-0877707 (January 7, 2009) "Surface Grinding Wheel" and Korean Utility Model No. 20-1999-009457 (published March 15, 1999) "Resinoid grinding wheel for high speed cutting".

The prior art is a hole in the body, the grinding portion or the disk portion of the hole is a circular or long hole to prevent the occurrence of high heat caused by friction and to obtain the effect of identifying the working surface, but the hole of the circular or long hole Since it is penetrated, heat and dust generated during actual work are not released to the worker.

Therefore, the present invention is to solve the above-mentioned conventional problems, an object of the present invention is to improve the cutting groove so that the friction heat and dust of the cutting material to be easily induced in the circumferential direction from the wheel center to be discharged to the cutting groove Cut-off hand grinder wheel for safe and economical release, as well as for safer release of frictional heat and dust, by facilitating the identification of the machining surface by blocking the improved heat cover to prevent direct heat and dust from being transmitted to the operator. The purpose is to provide.

In the present invention, the incision-type hand grinder wheel has a plurality of incision grooves formed in a curved and / or oblique line in a circumferential direction from the center of the coupling hole formed in the center portion of the disc, and the workpiece can be projected while closing the upper portion of the incision groove. Including a single transparent cover of acrylic or polycarbonate material to be attached to the upper portion of the disk portion with an adhesive material, the cut groove is formed in the disc portion at least one while being formed in an inclined shape, the single transparent cover Is attached by an adhesive material so as to be mounted on the stepped portion formed above the incision groove formed in the disc portion without protruding upward, and is discharged to the outside by being guided along the flow of the cutting rotation direction while blocking heat and dust from being discharged upward. One can be characterized by technical configuration.

According to the present invention, the single-piece transparent cover for closing and attaching the upper portions of the plurality of cut grooves with an adhesive material during polishing is simple in structure and therefore can be manufactured at low cost, which is very economical and does not protrude to the top so there is no jam. It is safe and easy to identify the cutting part of the workpiece and prevents the frictional heat and dust generated during processing from being released toward the operator, and is smoothly guided and discharged along the sloping cutout formed in a curved or diagonal line in the circumferential direction. It increases the work efficiency and is very safe to protect workers.

1 is a perspective view showing a state in which the cut-type hand grinder wheel coupled to the hand grinder according to the present invention.

2 is an exploded perspective view of the cutaway hand grinder wheel according to the present invention.

3 is a longitudinal cross-sectional view of FIG. 2;

Figure 4 is a front view showing the form of the incision groove vertical surface of the incision hand grinder wheel according to the present invention.

Figure 5 is a perspective view showing a curved transparent or oblique cut groove formed in the disc portion of the cut-off hand grinder wheel according to the present invention and a single transparent cover for closing the top of the cut groove.

6A and 6B are a perspective view and a cross-sectional view showing a state in which a disc-shaped transparent cover of a cutaway grinder wheel according to the present invention is attached using a recess formed in a disc portion.

7 and 8 are a perspective view and an enlarged cross-sectional view showing a state in which the individual transparent cover of the cut-off hand grinder wheel according to the present invention is attached to the stepped portion formed on the upper portion of the groove portion.

9 is a real picture showing the actual working state of the dissecting hand grinder wheel according to the present invention.

10 is a real picture showing a working state of a conventional hand grinder wheel.

<Description of Symbols for Main Parts of Drawings>

1: wheel 11: coupling hole

12: disc portion 121: groove portion

13: incision groove 131: curve

132: diagonal 133: vertical

134: inclined 135: stepped portion

2: adhesive material

31: disc transparent cover 32: single transparent cover

4: hand grinder 41: axis of rotation

42: nuts

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The wheel 1 of the present invention is fixed when the nut 42 is fastened to the rotary shaft 41 after inserting the coupling hole 11 into the rotary shaft 41 of the hand grinder 4 as shown in FIG. 1. .

The wheel 1 of the present invention, as shown in Figs. 2, 3 and 5 is a cutting groove 13 formed in the disk 12 so that heat and dust is guided along the flow in the cutting rotation direction to smoothly discharge The coupling hole 11 is formed in a curve 131 and / or an oblique line 132 from the center to the circumferential direction.

That is, the incision groove 13 is a portion in which the coupling hole 11 is blocked and the circumferential direction is an open portion, and when the wheel 1 rotates in the clockwise direction, air flows from the open portion to the counterclockwise direction. Since the cold air and dust are discharged to help this, the opening part is formed in a curved line 131 and / or an oblique line 132 to counterclockwise direction.

In addition, the at least one cutting groove 13 formed by the curved line 131 or the oblique line 132 is formed in the disc portion 12, the cutting surface is vertical (133) and as shown in (A) of FIG. And / or as inclined type 134 as (B). When the cutting surface is vertical (133) is used for low-strength workpieces, and when the cutting surface is inclined type (134), it is used for cutting high-strength workpieces that are hard and dusty. It is possible to efficiently adjust the movement (blowing) function of the basin.

On the other hand, as the core technology of the present invention to block the heat and dust discharged to the upper portion of the cutting groove 13 formed in the disk portion 12 and close the upper portion of the adhesive material on the disk portion 12 so that the workpiece can be seen ( 2) to provide a disc-shaped transparent cover 31 or a single transparent cover 32 to be attached.

That is, the disk-shaped transparent cover 31 or the individual transparent cover 32 is closed by the top of the incision groove 13 to block the heat and dust to the worker while the heat and dust smoothly along the incision groove 13 It is guided to help act as a vent (chimney) to be discharged outward circumferential.

In addition, the disc shaped transparent cover 31 or the single transparent cover 32 is formed of acrylic or polycarbonate material having good transparency and strong heat resistance. And the disk-shaped transparent cover 31 attached to the entire upper portion of the disc portion 12 to close the upper portion of the incision groove 13 as shown in Figure 2 or the disk-shaped transparent cover 31 and the adhesive as shown in FIG. In order to reduce the consumption of (2) to reduce the manufacturing cost, it can be formed with a single transparent cover 32 attached to the upper part of the incision groove (13), the adhesive material (2) uses an acrylic (high-lock, hard-lock) two-component type It was.

The disc-shaped transparent cover 31 or the single transparent cover 32 and the material of the adhesive material 2 are not limited thereto, and are cold-resistant, heat-resistant, and water-resistant, which do not peel and deform from heat and dust generated from the wheel 1. It is also possible to use various materials having flame resistance, transparency and transparency.

In addition, the disk-shaped transparent cover 31 may be attached after applying the adhesive material 2 to the entire upper portion of the disk portion 12 as shown in FIG. 2 or formed on the disk portion 12 as shown in FIGS. 6A and 6B. It may be attached by the adhesive material 2 which is filled in the groove portion 121 and is more firmly attached to the disk portion 12.

In addition, as shown in FIGS. 7 and 8 (A) and (B) by expanding the upper side of the cut groove 13 formed in the disk portion 12 so that the attachment of the individual transparent cover 32 is more stable and firm The stepped portion 135 is formed, and the stepped portion 135 is attached to the adhesive member 2 while being placed so as to be mounted on the single transparent cover 32 so as not to protrude upward.

Therefore, the present invention increases the cooling efficiency when grinding by the plurality of cutout grooves 13 formed in the disc portion 12, so that the cutting operation is easy, and the cutout groove 13 is inclined in the counterclockwise direction. Or slanted line 132, the heat and dust generated when cutting the workpiece are discharged smoothly in the circumferential direction opposite to the direction in which the wheel 1 rotates, and the cutting work efficiency is very economical. According to the difference in the strength of the incision surface shape of the incision groove 13 can be used to select one of the vertical type 133 or inclined type 134 it is possible to increase the efficiency of the work.

In addition, since the disc shaped transparent cover 31 or the single transparent cover 32 attached and closed by the adhesive material 2 on the tops of the plurality of cutouts 13 is transparent, the cutting part of the workpiece is identified as shown in FIG. 9. This facilitates efficient surface machining and is safe as it prevents frictional heat and dust from being released toward the operator.

In addition, the individual transparent cover 32 is formed in the upper portion of the incision groove 13 in the form of a curved line 131 or an oblique 132 formed in the circumferentially inclined form 134 as shown in Figs. Since it does not protrude to the outside while there is no jam, it is safe and plays a role of making the incision groove 13 into a tuyeres (chimney passage), so that heat and dust are smoothly released along the incision groove 13 in the circumferential direction. It is very economical because its structure is simple and can be manufactured at low cost.

Although described and illustrated in connection with the preferred embodiment of the present invention above, it is not limited to the configuration and operation as shown and described above. Therefore, it will be understood by those skilled in the art that the above embodiments can be appropriately modified and modified, so that appropriate changes, modifications, and equivalents should be considered to be within the scope of the present invention.

Claims (1)

1. A plurality of cutout grooves 13 are formed in a circumferential direction from the center of the coupling hole 11 formed at the center of the disc part 12 by a curved line 131 and / or an oblique line 132, and In the cut-off hand grinder wheel consisting of a single transparent cover 32 of acrylic or polycarbonate material attached to the upper portion of the disc portion 12 with an adhesive 2 so that the workpiece can be viewed while closing the upper portion,

    The cutting groove 13 is formed at least one or more in the disc portion 12, the incision surface is formed in the inclined 134, the single transparent cover 32 is the disc portion 12 without protruding upwards Attached by the adhesive material 2 so as to be mounted on the stepped part 135 formed on the upper side of the cutout groove 13 formed in the c), the heat and dust are guided along the flow in the direction of cutting rotation to be discharged to the outside. Retractable hand grinder wheel, characterized in that.

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