KR102367423B1 - Circle saw and cutting apparatus having the same - Google Patents

Abstract

The present invention provides a circular saw capable of extending the life of a cutting tip. The circular saw capable of extending the life of a cutting tip comprises: a disc-shaped body; a plurality of tip fixing members protruding at intervals on the circumference of the body; and a plurality of cutting tips fixed to one surface part of the plurality of tip fixing members, wherein each of the plurality of tip fixing members includes a bottom surface fixed to the circumference of the body, front and rear surfaces extending from both ends of the bottom surface, and an upper surface connecting the upper ends of the front and rear surfaces, one surface part of the cutting tip is fixed to the front surface, a step is formed between the upper surface and the rear surface, and the connection position between the upper surface and the rear surface reaches the 1/2 position level of the front surface. The present invention also provides a cutting device comprising the circular saw.

Description

A circular saw capable of extending the life of the cutting tip and a cutting device including the same {Circle saw and cutting apparatus having the same}

The present invention relates to a circular saw, and more particularly, to a circular saw capable of extending the life of a cutting tip capable of increasing the number of times that can be reused by grinding the cutting tip to a certain level or more, and a cutting device including the same.

In general, circular saw blades are used for cutting various industrial materials such as wood, metal pipes, iron plates, round bars, and non-ferrous metals (Cu, Al, etc.) since the cutting edge is formed along the circumference.

Since the cutting edge of the circular saw blade cuts metal materials having very strong strength and hardness, a cutting tip for cutting metal is attached to the saw blade of the circular saw blade through high frequency welding.

1 is a view showing a conventional circular saw. Figure 2 is a view showing a tip fixing member to which the cutting tip of Figure 1 is fixed. 3 is a view showing a conventional example of grinding the cutting tip.

Referring to FIG. 1 , the conventional circular saw has a disk-shaped body 10 . Tip fixing members 20 are formed on the circumference of the body 10 to protrude at intervals.

The cutting tips 30 formed of cemented carbide are fixed to one surface of each of the tip fixing members 20 through soldering.

Referring to FIG. 2, each of the conventional tip fixing members 20 includes a bottom surface, a front surface and a rear surface extending upward from both ends of the bottom surface, and an upper surface connecting the upper surfaces of the front surface and the rear surface.

Here, the bottom surface of each of the tip fixing members 20 is integrally fixed to the circumference 10 of the body.

One side of each of the cutting tips 30 is fixed to the front surface by welding or brazing. At this time, the upper surface of each of the cutting tips 30 partially protrude upward of the tip fixing member.

Accordingly, as in FIGS. 1 and 2 , the outer edge of each cutting tip 30 is formed to form a predetermined angle.

The conventional circular saw configured as described above may be rotated by driving the rotator of the cutting device. And the outer edge of each of the cutting tips of the rotating circular saw is in physical contact with the cutting object of wood or metal to make a substantial cut.

Therefore, when cutting an object to be cut more than a certain number of times using a circular saw, the outer edge of each of the cutting tips 30 is damaged in a round shape as shown in FIG. 3 and the blade becomes dull.

In this case, conventionally, a separate polishing apparatus is used to perform polishing in parallel to the first and second axes.

That is, the front surface of the cutting tip parallel to the first axis is polished by the first width using a polishing device.

Then, the upper surface of the cutting tip 30 is polished by the second width parallel to the second axis using a polishing device.

Accordingly, the outer edge of the cutting tip 30 may be polished to form a right angle.

However, in the case of grinding parallel to the second axis by more than the second width, a part of the upper end of the tip fixing member 20 of the body is inevitably polished.

In this way, when the cutting tip 30 is polished to be reused several times or more, the tip fixing member 20 is polished to a certain width or more along the lower end from the upper end.

In this case, the tip fixing member 20 is polished more than necessary, and there is a problem in that the area for substantially fixing the cutting tip 30 is reduced.

For this reason, in the prior art, there is a problem that the reuse life of the cutting tip may be limited by grinding the cutting tip less than a certain number of times to prevent excessive polishing of the tip fixing member 20 .

Accordingly, in recent years, it is required to develop a technology capable of extending the reuse life of the cutting tip of the circular saw beyond a certain level within a certain polishing limit of the tip fixing member.

Republic of Korea Registered Utility No. 20-0362758 (Registration Date: September 13, 2004)

The present invention has been devised to solve the above problems, and the present invention is formed on the circumference of the body of a circular saw and through changing the shape of the tip fixing member for fixing the cutting tips, the cutting tip is polished and reused when the tip is fixed. An object of the present invention is to provide a circular saw capable of extending the life of the cutting tip by minimizing the area to be polished of the member, thereby increasing the number of polishing and increasing the service life of the cutting tips.

In addition, the present invention is a circular shape that can extend the life of the cutting tip so that only the cutting tip is polished for reuse by forming the cutting tips to protrude from the tip fixing member and fixing them at a predetermined protruding position Another purpose is to provide a saw.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the appended claims.

In order to achieve the above objects, the present invention provides a circular saw capable of extending the life of the cutting tip.

The circular saw, which can extend the life of the cutting tip, includes a disc-shaped body; a plurality of tip fixing members protruding at intervals on the circumference of the body; and a plurality of cutting tips fixed to one surface of the plurality of tip fixing members,

Each of the plurality of tip fixing members,

A bottom surface fixed to the circumference of the body, front and rear surfaces extending from both ends of the bottom surface, and an upper surface connecting the upper ends of the front and rear surfaces,

One side of the cutting tip is fixed to the front surface,

A step is formed between the upper surface and the rear surface, and the connection position between the upper surface and the rear surface reaches a level of 1/2 position of the front surface.

Here, the angle between the upper surface and the rear surface forms an obtuse angle,

The upper surfaces of the plurality of tip fixing members are preferably formed in a concave shape.

And it is preferable that the front surfaces of the plurality of tip fixing members are formed in an outwardly convex shape.

In addition, the rear surface of each of the plurality of tip fixing members is preferably formed in a concave shape.

In addition, on the front surface of each of the plurality of tip fixing members,

A seating end is formed on which the lower ends of the plurality of cutting tips are seated,

The seating end is

inclined to form an obtuse angle with the front surface,

The lower end of each of the plurality of cutting tips is preferably formed in a shape corresponding to the inclination of the seating end.

In addition, the upper surface of the plurality of tip fixing members,

a first upper surface forming a predetermined length;

It is preferable to include a second upper surface connected to the upper end of the rear surface by stepping in an L shape from the end of the first upper surface.

In addition, on the upper surface of each of the plurality of tip fixing members,

A fitting groove into which one surface part of the cutting tip is fitted is further formed,

The depth of the fitting groove is,

It is preferable that the fitting groove is formed to gradually deepen along the upper end from the lower end.

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According to another embodiment, the present invention provides a cutting device comprising the above-described circular saw.

According to the above object, the present invention is formed on the circumference of the body of the circular saw and through changing the shape of the tip fixing member for fixing the cutting tips, minimizes the area to be polished of the tip fixing member when the cutting tip is polished and reused and, thereby, has the effect of increasing the number of abrasives and increasing the service life of the cutting tips.

In addition, the present invention has the effect of allowing only the cutting tip to be polished during polishing for reuse by forming the cutting tips to protrude from the tip fixing member and to be fixed at a predetermined protruding position.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is a view showing a conventional circular saw.
Figure 2 is a view showing a tip fixing member to which the cutting tip of Figure 1 is fixed.
3 is a view showing a conventional example of grinding the cutting tip.
Figure 4 is a view showing a circular saw capable of extending the life of the cutting tip according to the present invention.
FIG. 5 is an enlarged view showing A of FIG. 4 .
6 is a perspective view showing a tip fixing member according to the present invention.
7 is a view showing the process of grinding the cutting tip according to the present invention.
8 is a view showing another example of the tip fixing member according to the present invention.
9 is a view showing an example of another shape of the tip fixing member according to the present invention.
10 is a view showing another example of the tip fixing member according to the present invention.
11 is a view showing a cutting device according to the present invention.
12 is a view showing an arrangement state of first and second abrasive members according to the present invention.

The above-described objects, features and advantages will be described below in detail with reference to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

In the following, that an arbitrary component is disposed on the "upper (or lower)" of a component or "upper (or below)" of a component means that any component is disposed in contact with the upper surface (or lower surface) of the component. Furthermore, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

In addition, when it is described that a component is “connected”, “coupled” or “connected” to another component, the components may be directly connected or connected to each other, but other components are “interposed” between each component. It should be understood that “or, each component may be “connected,” “coupled,” or “connected,” through another component.

Hereinafter, a circular saw capable of extending the life of the cutting tip according to the present invention and a cutting device including the same will be described with reference to the accompanying drawings.

First, a circular saw capable of extending the life of the cutting tip according to the present invention will be described.

Figure 4 is a view showing a circular saw capable of extending the life of the cutting tip according to the present invention. FIG. 5 is an enlarged view showing A of FIG. 4 . 6 is a perspective view showing a tip fixing member according to the present invention.

4 to 6, the circular saw of the present invention has a disk-shaped body 100, a plurality of tip fixing members 200 protruding at intervals on the circumference of the body 100, and the plurality of It includes a plurality of cutting tips 300 fixed to one surface portion of the tip fixing member 200 .

Here, each of the plurality of tip fixing members 200 has a bottom surface 211 fixed to the circumference of the body 100 , a front surface 212 and a rear surface 212 extending from both ends of the bottom surface 211 , and the It is formed of a member body 210 including an upper surface 213 connecting the upper ends of the front surface 212 and the rear surface 212 .

Each of the plurality of tip fixing members 200 is formed to protrude from the circumference of the body 100 toward the centripetal direction, and may form an integral body with the body 100 . In some cases, although not shown in the drawings, the tip fixing members 200 may be coupled to each other by being fitted into a coupling groove (not shown) formed on the circumference of the body 100 . At this time, the fitting inlet is formed in the direction of the coupling groove in the direction opposite to the rotational direction of the body 100, and the lower end of the tip fixing member 200 is fitted with a fitting protrusion (not shown) to be fitted into the fitting inlet. may be

One surface portion of the cutting tip 300 is fixed to the front surface 212 .

A step is formed between the upper surface 214 and the rear surface 213 , and the connection position between the upper surface 214 and the rear surface 213 reaches a level of 1/2 position of the front surface.

Here, the angle between the upper surface 214 and the rear surface 213 forms an obtuse angle.

The upper surfaces 214 of the plurality of tip fixing members 200 are formed in a concave shape.

In addition, the rear surface 213 of each of the plurality of tip fixing members 200 is formed in a concave shape.

In addition, a seating end 211a is formed on the front surface 212 of each of the plurality of tip fixing members 200 to seat the lower ends of the plurality of cutting tips 300 .

The seating end 211a may form a structure coupled to the lower end of the cutting tip 300 in a sawtooth shape.

The seating end 211a is inclined to form an obtuse angle with the front surface 212 .

The lower ends of each of the plurality of cutting tips 300 may be formed in a shape corresponding to the inclination of the seating end 211a.

The front surfaces 212 of the plurality of tip fixing members 200 may be formed in an outwardly convex shape.

The circular saw according to the present invention is configured as described above, and the process of grinding the cutting tip through the configuration will be described.

7 is a view showing the process of grinding the cutting tip according to the present invention.

7 and 11, when the outer edge of the cutting tip 300 according to the present invention is dulled due to several cuts, it is possible to grind a surface parallel to the first and second directions.

For convenience of description, the first direction is referred to as a horizontal direction, and the second direction is referred to as a vertical direction.

The first abrasive member 410 is sequentially moved by the driving of the first mover 610 moving in the horizontal direction. The first abrasive member 410 may be an abrasive that is rotated by rotation of the first rotating machine 510 . The first abrasive member 410 may be disposed parallel to the upper surface of the cutting tip (300).

In addition, the second abrasive member 420 is sequentially moved by the driving of the second mover 620 that moves in the vertical direction. The second abrasive member 420 may be an abrasive that is rotated by rotation of the second rotating machine 520 . The second abrasive member 420 may be disposed parallel to the outer surface of the cutting tip (300).

First, under the control of the controller 700 , the first abrasive member 410 is moved by the first mover 610 while being rotated by the driving of the first rotator 510 . At this time, the first abrasive member 410 may grind the upper surface of the cutting tip 300 to a predetermined depth.

Then, under the control of the controller 700 , the second abrasive member 420 is moved by the second mover 620 while being rotated by the driving of the second rotator 520 . At this time, the second abrasive member 420 may grind the outer surface of the cutting tip 300 to a predetermined depth.

Accordingly, the upper surface and the outer surface of the cutting tip 300 are polished or deleted to a predetermined depth, respectively, so that the outer edge between them may form a right angle or a sharp edge.

When the outer edge of the cutting tip 300 is repeatedly polished in this way, the upper end of the body 100 may inevitably be polished and deleted.

At this time, the upper surface 214 of the tip fixing member 200 according to the present invention is formed in a concave shape, and the rear surface 213 of the tip fixing member 200 is also formed in a concave shape, but forms a certain obtuse angle, 1 and 2, the polishing area of the body to be polished can be reduced compared to the conventional case shown in FIGS.

Accordingly, as the tip fixing member 200 according to the present invention achieves the step shape as described above, it can be polished several times more than in the prior art, thereby increasing the number of reuse of the cutting blade.

8 is a view showing another example of the tip fixing member according to the present invention.

8, the upper surface of the tip fixing member 200 according to the present invention has a first upper surface 214a forming a predetermined length, and the rear surface ( A second upper surface 214b connected to the upper end of the 213 may be included.

Here, an angle between the first upper surface 214a and the second upper surface 214b may be formed between 90 degrees and 120 degrees.

Also, a predetermined curvature may be formed between the first upper surface 214a and the second upper surface 214b.

Even in this case, as described above, when the upper surface of the cutting tip 300 is repeatedly polished several times using the first abrasive member 410 as described above, the polishing area of the upper end of the body 100 to be polished during the upper end of the body is inevitably generated. It is possible to effectively reduce the number of reuse of the cutting tip by several times.

9 is a view showing an example of another shape of the tip fixing member according to the present invention.

Referring to FIG. 9 , the rear surface and the upper surface of each of the plurality of tip fixing members 200 according to the present invention may be processed to form a wave shape.

The cutting tip 300 according to the present invention may be fixed through welding using silver solder on one surface of the tip fixing member 200 .

Although not shown in the drawings, the front surface of the tip fixing member and one surface of the cutting tip also form a wave-shaped or concave-convex welding surface to increase the welding area of the cutting tip to a certain level or more, thereby securing fixing force.

In addition, as the rear surface and the upper surface of the tip fixing member form a wave shape, it is possible to absorb and disperse the force generated during grinding of the cutting tip or when cutting the object to a certain level or more.

10 is a view showing another example of the tip fixing member according to the present invention.

Referring to FIG. 10 , a fitting groove 212a into which one surface portion of the cutting tip 300 is fitted is further formed on the upper surface of each of the plurality of tip fixing members 300 according to the present invention.

The depth of the fitting groove (212a) may be formed to gradually deepen along the upper end from the lower end of the fitting groove (212a).

When the upper surface 214 and the rear surface 213 of the tip fixing member 200 according to the present invention are concavely formed or when the upper surface is stepped in an L shape, the upper surface of the cutting tip 300 and the tip fixing member 200 It is possible to stably fix the cutting tip 300 while the upper end is simultaneously polished.

That is, since the upper end of the tip fixing member 200 has a narrower area than the lower end, the fixing force of the cutting tip 300 may be lower than that of the lower end. Accordingly, in the present invention, the depth of the fitting groove 212a into which the one surface part of the cutting tip 300 is fitted is formed so that the upper end of the tip fixing member 200 is deeper than the lower end, and the posture of the cutting tip 300 during polishing is improved. to keep it constant.

Accordingly, the profile of the fitting groove 212a according to the present invention may be formed to a depth symmetrical to the step profile of the upper surface of the tip fixing member 200 .

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And the cutting tip 300 and the tip fixing member 200 are each formed with the position fixing holes forming an interval. Pins may be inserted into the position fixing holes.

Accordingly, when the position of the cutting tip 300 is changed, the cutting tip is partially protruded upward by rotating the gear member, and this position is fixed by inserting it into the corresponding position fixing holes using a pin.

And by grinding the outer edge of the protruding cutting tip 200 using the first and second abrasive members 410 and 420, it is possible to form a right-angled edge.

Accordingly, in the present invention, without grinding the upper surface of the tip fixing member, which is a part of the body, only the cutting tip is polished, thereby eliminating damage to the body and allowing only the cutting tip to be replaced later.

The following describes a cutting device provided with the circular saw according to the present invention described above.

11 is a view showing a cutting device according to the present invention. 12 is a view showing an arrangement state of first and second abrasive members according to the present invention.

11 and 12, the cutting device according to the present invention has a device body (800).

A rotating shaft 810 is formed on the device body 800 . The center of the circular saw according to the present invention is coupled to the rotation shaft 810 . The rotation shaft 810 is connected to the rotation motor 820 in an axial manner.

The rotation motor 820 is driven under the control of the controller 700 .

An opening through which a portion of the circular saw is exposed is formed at one side of the device body 800 . When the circular saw is rotated, the cutting object may be cut through a part of the circular saw exposed through the opening.

A plurality of tip fixing members 200 are formed on the circumference of the body 100 of the circular saw, and the cutting tips 300 are fixed to the plurality of team fixing members 200 by welding. The tip fixing member 200 and the cutting tip 300 are the same as in the above-described example.

A first abrasive member 410 and a second abrasive member 420 are disposed inside the device body 800 .

The first and second abrasive members 410 and 420 may be disposed in the vicinity of the circular saw.

The first abrasive member 410 is disposed parallel to the first direction inside the device body 800 . The first abrasive member 410 is rotated by the first rotator 510 , and the position is moved by the first mover 610 . The first rotator 510 and the first mover 610 are driven under the control of the controller 700 .

The second abrasive member 420 is disposed parallel to the second direction inside the device body 800 . The second abrasive member 420 is rotated by the second rotator 520 , and the position is moved by the second mover 620 . The second rotator 520 and the second mover 620 are driven under the control of the controller 700 .

An imaging device 830 for acquiring a side image of the cutting tip 300 of the circular saw and transmitting the acquired image to the controller 700 may be installed inside the device body 800 .

When cutting the object to be cut, the controller 700 rotates the rotation shaft using the rotation motor 820 to rotate the circular saw. The outer edge of the cutting tips 300 provided on the circumference of the rotating circular saw cut the object to be cut.

Then, when the cutting operation is made several times, the outer edge of the cutting tips 300 may be dull from a pointed state to a round state.

At this time, the imaging device 830 acquires a side image of the cutting tips 300 in real time, and transmits it to the controller 700 .

The imaging device 830 continuously transmits the acquired side images of the cutting tips 300 to the controller 700 .

Here, a tip normal image is preset in the controller 700 . The tip normal image is preferably an image forming a sharp state before the outer edge of the cutting tip 300 becomes dull to achieve a predetermined curvature as in the above-described example.

In addition, an operation mode and a polishing mode may be set in the controller 700 .

The controller 700 compares the preset tip normal image and the acquired lateral image, and when an error image is established between them, the controller 700 switches from the operation mode to the polishing mode.

At this time, the circular saw is in a state in which rotation is stopped under the control of the controller 700 . The operation of the rotation motor 820 is stopped.

The controller 700 rotates the circular saw using the rotation motor 820 so that the cutting tips 300 are sequentially rotated and positioned at a preset polishing position.

Then, the controller operates the first rotation motor 410 and the first mover 610 . Accordingly, the first abrasive member 410 is moved while being rotated to be parallel to the horizontal direction to grind the upper surface of the cutting tip 300 to a set depth.

Then, the controller 700 operates the second rotation motor 420 and the second mover 620 . Accordingly, the second abrasive member 420 is moved while being rotated to be parallel to the longitudinal direction to polish the side surface of the cutting tip 300 to achieve a set depth.

Accordingly, the outer edge of the cutting tip 300 positioned at the polishing position may be polished in a right angle or sharp shape.

Then, the controller 700 returns the first and second abrasive members 410 and 420 to their original positions using the first and second movers 610 and 620 .

And the controller 700 rotates the body to a polishing position to be polished using the first and second abrasive members (410, 420) using the rotation motor 820 so that the other cutting tip 300 can be polished. The other cutting tip 300 is rotated to stand by at the polishing position.

And the controller 700 grinds the outer edge of the other cutting tip 300 in the same manner as above.

Accordingly, the controller 700 according to the present invention rotates the cutting tips 300 formed on the circular saw sequentially at the polishing position in the same manner as above, so that the outer edge is at a right angle or sharpened to a preset tip normal image. It can be polished accordingly.

And the controller 700 after grinding all of the cutting tips 300, and then switches to the operation mode again, and positions the first and second abrasive members (410, 420) to their original positions.

Here, the set depth control for the above-described polishing may be proportional to the moving distance of the first and second movers 610 and 620 .

For example, the first and second movers 610 and 620 may be cylinders having a shaft that expands and contracts, and the shaft may have a structure capable of being hinged to the first and second rotation shafts.

For those of ordinary skill in the art to which the present invention pertains, various substitutions, modifications and changes are possible within the scope of the present invention without departing from the technical spirit of the present invention. is not limited by

100: body
200: tip fixing member
300: cutting tip

Claims (10)

Disc-shaped body;
a plurality of tip fixing members protruding at intervals on the circumference of the body; and,
Including a plurality of cutting tips fixed to one surface of the plurality of tip fixing members,
Each of the plurality of tip fixing members,
A bottom surface fixed to the circumference of the body, front and rear surfaces extending from both ends of the bottom surface, and an upper surface connecting the upper ends of the front and rear surfaces,
One side of the cutting tip is fixed to the front surface,
A step is formed between the upper surface and the rear surface, and the connection position between the upper surface and the rear surface reaches the 1/2 position level of the front surface,
An angle between the upper surface and the rear surface is an obtuse angle, and the upper surface of the plurality of tip fixing members is formed in a concave shape,
The front surfaces of the plurality of tip fixing members are formed in an outwardly convex shape,
The rear surface of each of the plurality of tip fixing members is formed in a concave shape,
The plurality of tip fixing members are fitted and coupled to a coupling groove formed on the circumference of the body, the direction of the coupling groove is formed along a direction opposite to the rotation direction of the body, the fitting inlet is formed, the plurality of tips fixing Circular saw, characterized in that the lower end of the member is formed with a fitting projection to be fitted into the fitting inlet.
delete delete delete The method of claim 1,
On the front surface of each of the plurality of tip fixing members,
A seating end is formed on which the lower ends of the plurality of cutting tips are seated,
The seating end forms a structure coupled to the lower end of each of the plurality of cutting tips in a sawtooth shape,
The seating end is
inclined to form an obtuse angle with the front surface,
The lower end of each of the plurality of cutting tips, a circular saw, characterized in that formed in a shape corresponding to the inclination of the seating end.
Disc-shaped body;
a plurality of tip fixing members protruding at intervals on the circumference of the body; and,
Including a plurality of cutting tips fixed to one surface portion of the plurality of tip fixing members,
Each of the plurality of tip fixing members,
A bottom surface fixed to the circumference of the body, front and rear surfaces extending from both ends of the bottom surface, and an upper surface connecting the upper ends of the front and rear surfaces,
One side of the cutting tip is fixed to the front surface,
A step is formed between the upper surface and the rear surface, and the connection position between the upper surface and the rear surface reaches the 1/2 position level of the front surface,
The plurality of tip fixing members are fitted and coupled to a coupling groove formed on the circumference of the body, the direction of the coupling groove is formed along a direction opposite to the rotation direction of the body, the fitting inlet is formed, the plurality of tips fixing The lower end of the member is formed with a fitting protrusion to be fitted into the fitting inlet,
The upper surface of the plurality of tip fixing members,
a first upper surface forming a predetermined length;
and a second upper surface connected to the upper end of the rear surface by stepping in an L shape from the end of the first upper surface,
An upper surface and a rear surface of each of the plurality of tip fixing members are formed in a wave shape, and an angle between the first upper surface and the second upper surface is formed between 90 degrees and 120 degrees, and the first upper surface and the second upper surface are formed in a wave shape. A certain curvature is formed between the circular saw, characterized in that to distribute the force applied to the plurality of cutting tips when cutting the object.
delete The method of claim 1,
On the upper surface of each of the plurality of tip fixing members,
A fitting groove into which one surface part of the cutting tip is fitted is further formed,
The depth of the fitting groove is,
Circular saw, characterized in that formed so as to gradually deepen along the upper end from the lower end of the fitting groove.
delete 7. A cutting device comprising the circular saw of claim 1 or 6,
The cutting device has a device body on which a rotating shaft is formed,
A center of the circular saw is coupled to the rotation shaft, the rotation shaft is connected to a rotation motor in an axial manner, and the rotation motor is driven by the control of a controller,
An opening through which a part of the circular saw is exposed is formed on one side of the device body, and when the circular saw is rotated, the cutting object is cut through a part of the circular saw exposed through the opening,
A first abrasive member and a second abrasive member disposed in the vicinity of the circular saw are disposed inside the device body,
The first abrasive member is disposed parallel to a first direction inside the device body, the first abrasive member is rotated by driving a first rotator, the position is moved by the first mover, the first The rotator and the first mover are driven by the control of the controller,
The second abrasive member is disposed parallel to a second direction inside the device body, the second abrasive member is rotated by driving a second rotator, and the position is moved by a second mover, and the second The rotator and the second mover are driven by the control of the controller,
An imaging device for acquiring side images of a plurality of cutting tips of the circular saw and transmitting the acquired images to the controller is installed inside the device body,
The controller rotates the circular saw by rotating the rotating shaft using the rotation motor, and the object to be cut is cut by the outer edges of the plurality of cutting tips provided on the circumference of the rotating circular saw,
While the cutting object is being cut, the imaging device continuously acquires side images of the plurality of cutting tips and transmits them to the controller,
A tip normal image, which is an image forming a sharp state before becoming dull to achieve a certain curvature, is preset in the controller,
an operation mode and a polishing mode are set in the controller;
The controller compares the preset tip normal image with the acquired side image, and when an error image set between the preset tip normal image and the acquired side image is achieved, stops the operation of the rotation motor, and switch from the operating mode to the polishing mode,
Rotating the circular saw using the rotary motor so that the plurality of cutting tips are sequentially rotated and positioned at a preset polishing position,
The controller operates the first rotation motor and the first mover to rotate and move the first abrasive member along the first direction parallel to the horizontal direction while setting the upper surfaces of the plurality of cutting tips to a set depth. polished to achieve
By operating the second rotary motor and the second mover, the side surfaces of the plurality of cutting tips are polished to achieve a set depth while rotating and moving the second abrasive member along the second direction parallel to the longitudinal direction. ,
Cutting device, characterized in that for grinding the outer edges of the plurality of cutting tips located at the polishing position in a right angle or sharp shape.

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