KR102559822B1 - Manufacturing method and the system of cutting tool by punching - Google Patents

Abstract

In the present invention, the step of preparing the steel body 20 of the hollow 22, the center of which is perforated (S10); At regular intervals on the edge of the steel body (20) Processing the shaped groove 33 (S20); Leveling the processed grooved steel body 30 (S30); and washing the leveled grooved steel body 30 and dressing the surface (S40).
According to the present invention, since the steel body to be the body of the diamond cutter is manufactured by perforation, there is an advantageous effect that the processing cost is low.

Description

Manufacturing method and system of cutting tool by punching

The present invention relates to a method and system for manufacturing a cutting tool by perforation, which is formed by perforation when making a groove on the edge of a steel body.

Among the cutting tools, the diamond cutter is a rotary cutter whose outermost blade is made of a material mixed with diamonds. Since it usually cuts concrete, stone, tile, etc., it must be very sturdy, durable, and long-lasting.

In addition, a certain cutting depth should be maintained, the faster the cutting speed, the better, and it should be possible to use it even for rough and strong base materials. Furthermore, for excellent readability and convenience, it is preferable that the drive direction is engraved on the disk.

On the other hand, diamond cutters are largely divided into three types. That is, there are cutters for concrete, cutters for stone, and cutters for tiles.

These diamond cutters are manufactured by bonding or welding a diamond blade to a steel body. Therefore, since leveling, polishing, and annealing are absolutely required for durability and clean cutting surfaces, the steel body used in the diamond cutter must be precisely processed according to the correct process sequence.

Furthermore, after the steel body is prepared, a groove is made in the rim and a diamond blade is welded to the rim with the groove in between. Therefore, a method of making a groove on the edge of the steel body is required, which may be by perforation or by laser.

When making a groove on the edge by perforation, the surface may be curved due to pressure during perforation and foreign substances may be smeared, so another additional process is required.

Furthermore, since a diamond blade is welded to the rim side of the steel body, a rough surface treatment that can exert strong adhesion is required, and furthermore, the cooling rate, which greatly affects the bonding strength of welding, must be controlled. If these factors are not considered, only the diamond blade may be broken or separated during use, resulting in a very dangerous accident.

Korean Patent Publication No. 10-2010-0070584 "Diamond Cutting Tool and Manufacturing Method"

An object of the present invention is to provide a method and system for manufacturing a cutting tool by perforation with low processing cost when making a steel body to be the body of a diamond cutter.

Another object of the present invention is to provide a method and system for manufacturing a cutting tool by perforation to make the surface flat again when valleys are formed by perforation.

Another object of the present invention is to provide a method and system for manufacturing a cutting tool by perforation capable of quickly and automatically processing the surface while roughening the surface in order to maximize the bonding force of the diamond blade with the steel body.

In the present invention, in order to achieve the above object, preparing a steel body 20 of a hollow 22 center perforated (S10); At regular intervals on the edge of the steel body (20) Processing the shaped groove 33 (S20); Leveling the processed grooved steel body 30 (S30); and washing the leveled grooved steel body 30 and dressing the surface (S40).

Here, in particular, the step of preparing the steel body 20 (S10) includes preparing a coiled raw material mold 10 again (S1); Uncoiling the coiled raw material mold 10 by fastening it to an uncoiler 999 (S2); Forming a hollow 22 by punching the center of the uncoiled raw material mold 10 (S3); Separating the perforated steel body 20 (S4); and winding the perforated mold 90 around the guide 100 and the coiler 888 (S5).

Furthermore, after the step S40, a step (S50) of fixing the grooved steel body 30 by the sanding device 200 and sanding the side surface may be further performed.

Here, the guide 100 includes a pair of bridges 120 protruding above the plate 110 and having a guide hole 111 formed thereon, and a horizontal bar 130 passing through the bridge hole 111 of the bridge, but the perforation mold 90 passes through the lower part of the pair of bridges 120 and the horizontal bar 130.

In addition, the sanding device 200 is erected by the supports 211 on both sides, the side wall 213 formed on the inner surface of which the control groove 212 formed with threads protrudes upward, and the first stage rotation core 255 Work table 210 with a work table hole 214 through which 255 enters and exits; A sanding block 220 having a concave cross section and two upper and lower block holes 221 formed in the center; a block case 230 accommodating the concave-shaped sanding block, having a case hole 231 corresponding to the block hole, and having a lower end 232 protruding; A fixing screw 240 passing through the block hole and the case hole and passing through the pressure spring 241 located between the side wall and the block case and screwed into the control groove; It is rotated by the rotary shaft 251 of the rotary motor 252 located on the lower side, and consists of a first-stage rotary core 255 inserted into the hollow of the grooved steel body and a second-stage rotary core 256 that enters and exits the workbench hole. A rotary core 250 equipped with a plurality of neodymium magnets 254 on a flat surface between the first-stage rotary core and the second-stage rotary core; A moving rail 260 to which the rotary motor is fixed; a guard rail unit 270 installed on an inner surface of the support so that the movable rail slides and moves up and down; And, a pneumatic cylinder 280 having a piston rod 281 fixed to the lower surface of the movable rail and installed on a cylinder holder 282 installed on the inner surface of the support, and moving the movable rail up and down. After the grooved steel body is inserted into the first-stage rotary core and fixed by a neodymium magnet, the rotary motor rotates, so that the side surface of the grooved steel body touches the sanding block and is surface treated.

According to the present invention, since the steel body to be the body of the diamond cutter is manufactured by perforation, there is an advantageous effect that the processing cost is low.

According to the present invention, there is an advantageous effect that can be made flat again when a valley is formed on the surface by perforation.

In addition, the grooved steel body in the present invention is inserted into the first stage rotating core to maximize the bonding force of the diamond blade and the steel body, and after being fixed by a neodymium magnet, the rotary motor rotates, so that the side surface of the grooved steel body touches the sanding block. There is an advantageous effect of surface treatment automatically.

Before describing the embodiments of the present invention in more detail using the drawings, like elements and elements having the same function and/or the same technical or physical effect in the drawings and detailed description are given the same reference numerals or identified with the same names, and elements shown or described in different embodiments and descriptions of their functions may be interchanged with each other or applied to each other in different embodiments.
1 is a flow chart showing a manufacturing method of a cutting tool by perforation of the present invention.
2 is a flow chart embodying the step (S10) of preparing a hollow steel body having a perforated center in the manufacturing method of a cutting tool by perforation according to the present invention.
3 is a perspective view showing a coiled raw material mold. It is a thin sheet of iron rolled up.
4 is a photograph taken of a conventional uncoiler.
5 is a plan view showing the hollow steel body 20 of the present invention.
6 is a perspective view of a guide used in the manufacturing method of a cutting tool by perforation of the present invention.
7 is a photograph taken of an uncoiler used in the manufacturing method of a cutting tool by perforation of the present invention.
8 is a plan view showing a grooved steel body 30 in which a groove 33 is formed on an edge in the manufacturing method of a cutting tool by perforation of the present invention.
9 is a plan view showing a state in which a diamond blade is welded to a welding part in the manufacturing method of a cutting tool by perforation according to the present invention.
10a, 10b, and 10c are longitudinal cross-sectional views, perspective views, and partially enlarged views of a sanding device in the manufacturing method of a cutting tool by punching according to the present invention.
11a to 11c are perspective views of a sanding device in the manufacturing method of a cutting tool by perforation of the present invention.
12a and 12b are a vertical cross-sectional view in which the rotary core is lowered downward and upward by a pneumatic cylinder of the sanding device in the method of manufacturing a cutting tool by perforation of the present invention, respectively.
Figures 13a and 13b are a perspective view and a perspective view of the rotary core moved upward and downward by the pneumatic cylinder of the sanding device in the method of manufacturing a cutting tool by perforation of the present invention, respectively.

Since the present invention can make various changes and have various embodiments, specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited items.

It should be understood that when an element is referred to as being “connected” or “connected” to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprise" or "have" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but it should be understood that the presence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof is not excluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and are not interpreted in an ideal or excessively formal sense unless explicitly defined in the present application.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail. In order to facilitate overall understanding in the description of the present invention, the same reference numerals are used for the same components in the drawings, and redundant descriptions of the same components are omitted.

1 is a flow chart showing a manufacturing method of a cutting tool by perforation of the present invention.

First, a step (S10) of preparing the steel body 20 of the hollow 22 having a perforated center is performed.

Here, the steel body 20 can be obtained through the following process.

2 is a flow chart embodying the step (S10) of preparing a steel body of a hollow 22 having a center perforation in the manufacturing method of a cutting tool by perforation of the present invention.

That is, the step of preparing the steel body (S10) proceeds with the step (S1) of preparing the coiled raw material mold 10.

3 is a perspective view showing a coiled raw material mold. It is a thin sheet of iron rolled up.

Next, a step (S2) of uncoiling the coiled raw material mold 10 by fastening it to the uncoiler 999 is performed. The uncoiler 999 means a normal machine that unwinds the raw material mold in the form of a roller again by rotation.

4 is a photograph of a conventional uncoiler 999.

Next, a step (S3) of forming a hollow 22 by punching the center of the uncoiled raw material mold 10 proceeds.

Next, a step (S4) of separating the perforated steel body 20 is performed. The separated steel body has a disk shape of a hollow 22 with a perforated center.

5 is a plan view showing the steel body 20 of the hollow 22 of the present invention.

Next, a step (S5) of winding the perforated mold 90 around the guide 100 and the coiler 888 is performed.

Here, the guide 100 prevents the perforated mold 90 from being disturbed.

Figure 6 is a perspective view of the guide 100 used in the method of manufacturing a cutting tool by perforation of the present invention.

More specifically, the guide 100 includes a pair of bridges 120 protruding above the plate 110 and having a bridge hole 111 formed thereon, and a horizontal bar 130 passing through the bridge hole 111 of the bridge 120.

Here, the perforated mold 90 can pass through the lower part of the pair of bridges 120 and the horizontal bar 130 and move in the longitudinal direction only at a limited position.

Meanwhile, the coiler 888 serves to wind the perforated mold 90 back into a roller shape.

7 is a photograph taken of an uncoiler 999 used in the manufacturing method of a cutting tool by perforation of the present invention.

After the steel body 20 is prepared, at regular intervals on the edge of the steel body 20 The step (S20) of processing the groove 33 of the shape proceeds.

8 is a plan view showing a grooved steel body 30 in which a groove 33 is formed on an edge in the manufacturing method of a cutting tool by perforation of the present invention.

Next, a step (S30) of leveling the processed grooved steel body 30 is performed. Since the hole is perforated with strong pressure, there is a risk of bending on the surface. Therefore, a flattening process by a leveling machine is required.

Next, a step (S40) of cleaning the leveled grooved steel body 30 and dressing the surface thereof proceeds. After leveling, a dressing operation is necessary because foreign substances may adhere to it.

Finally, a step (S50) of fixing the grooved steel body 30 by the sanding device 200 and sanding the side surface may be further performed.

The reason for the sanding treatment is that the diamond blade 39 is welded to the side of the edge of the grooved steel body 30, so a rough surface treatment that can exert strong adhesion is required. If this point is not considered, only the diamond blade 39 is broken or separated during use, and a very dangerous accident may occur.

9 is a plan view showing a state in which a diamond blade 39 is welded to a welded portion 38 in the manufacturing method of a cutting tool by perforation according to the present invention.

As shown in FIG. 9, a diamond blade 39 is fixedly bonded to the side of the grooved steel body 30 in which the hollow 22 is formed, with a weld 38 formed by welding in between.

Therefore, in the present invention, the side surface of the grooved steel body 30 is roughened to double the adhesive strength so that the welded portion 38 is not damaged by cracks or damage due to impact by any external force.

10a, 10b and 10c are a longitudinal cross-sectional view, a perspective view, and a partially enlarged view of the sanding device 200 in the method of manufacturing a cutting tool by punching according to the present invention.

As shown in FIGS. 10A to 10C, the sanding device 200 of the present invention is largely composed of a work table 210, a sanding block 220, a block case 230, a fixing screw 240, a rotating core 250, a moving rail 260, a guard rail unit 270, and a pneumatic cylinder 280.

The workbench 210 may be erected by the supports 211 on both sides. In addition, the side wall 213 formed on the inner surface with the adjusting groove 212 having a screw thread formed on the inner circumferential surface protrudes upward.

In addition, a workbench hole 214 through which a first-stage rotary core 255 to be described later enters and exits is formed. Preferably, a bearing part is formed on the inner circumferential surface of the work table hole 214 .

On the other hand, the sanding block 220 has a concave cross section, has two block holes 221 vertically formed in the center, and is accommodated by the block case 230. That is, the block case 230 accommodates the concave-shaped sanding block 220, has a case hole 231 corresponding to the block hole 221, and has a lower end 232 protruding.

In addition, the fixing screw 240 passes through the block hole 221 and the case hole 231 and penetrates the pressure spring 241 located between the side wall 213 and the block case 230 and is screwed into the adjustment groove 212.

The fixing screw 240 is preferably threaded at the distal end of the body. That is, the fixing screw 240 is screwed into the adjustment groove 212 to be fixed, but the pressure spring 241 can elastically press the sanding block 220 to vibrate it finely.

Meanwhile, the rotary core 250 is rotated by the rotary shaft 251 of the rotary motor 252 located at the lower side. The rotating core 250 is composed of a first stage rotating core 256 inserted into the hollow 22 of the grooved steel body 30 and a second stage rotating core 255 entering and exiting the worktable hole 214.

Furthermore, it is preferable that a plurality of neodymium magnets 254 are provided on the flat surface P between the first stage rotation core 256 and the second stage rotation core 255 . Since the neodymium magnet 254 has a very strong magnetic force, it can be firmly attached to the lower surface of the grooved steel body 30.

11a to 11c are perspective views of a sanding device 200 in the manufacturing method of a cutting tool by punching according to the present invention.

11A shows a state immediately before the rotary core is inserted into the grooved steel body 30.

In FIG. 11B, after the rotary core 250 is completely inserted into the grooved steel body 30 and strongly attached by the neodymium magnet 254, the rotary core 250 touches the sanding block 220 while rotating, and the surface is treated.

Figure 11c shows the separation of the grooved steel body 30 from the rotating core. That is, even if the magnetic force of the neodymium magnet 254 is strong, when the rotating core 250 moves downward by the pneumatic cylinder 280, the grooved steel body 30 may be separated from the neodymium magnet 254 by the vertical drag force of the work table 210.

Meanwhile, it is preferable that the rotation motor 252 is fixed to the moving rail 260 and the guard rail part 270 is installed on the inner surface of the support 211 so that the moving rail 260 moves up and down while sliding.

In addition, the piston rod 281 of the pneumatic cylinder 280 is fixed to the lower surface of the movable rail 260, and the pneumatic cylinder 280 is installed on the cylinder holder 282 installed on the inner surface of the support 211. And the moving rail 260 is moved up and down by the operation of the pneumatic cylinder 280. That is, the rotary core 250 moves up and down by the force of the pneumatic cylinder 280 .

12a and 12b are longitudinal cross-sectional views in which the rotary core is lowered downward and upward by the pneumatic cylinder 280 of the sanding device 200 in the method of manufacturing a cutting tool by perforation of the present invention, respectively.

Since the force of the pneumatic cylinder 280 is sufficient, the rotary motor 252 having a rotary core can be stably moved up and down by changing the length of the piston rod 281 .

13a and 13b are respectively a perspective view in which the rotary core is lowered downward and upward by the pneumatic cylinder 280 of the sanding device 200 in the method of manufacturing a cutting tool by punching according to the present invention.

As shown in FIG. 13 , it can be seen that the moving rail 260 to which the rotary motor 252 is fixed moves up and down along the guard rail unit 270 .

According to the configuration as described above, the grooved steel body 30 in the present invention is inserted into the first stage rotary core 256 so that the side surface of the grooved steel body 30 touches the sanding block 220 and is fixed by the neodymium magnet 254. Then, the rotary motor 252 rotates, thereby having an advantageous effect of quickly and automatically surface treatment.

On the other hand, in order to operate the piston rod 281 of the pneumatic cylinder 280, in addition to the air tube, a control device for controlling the pneumatic cylinder 280 or the rotary motor 252, and the like, a power supply for driving the rotary motor 252. However, since it is obvious to those skilled in the art, detailed descriptions will be omitted.

The description of the presented embodiments is provided to enable any person skilled in the art to use or practice the present invention.

Various modifications to these embodiments will be apparent to those skilled in the art.

Thus, the present invention is not to be limited to the embodiments presented herein, but is to be interpreted in the widest scope consistent with the principles and novel features presented herein. Also, the word "exemplary" is used herein to mean serving as an example, instance, or explanation.

Accordingly, the preferred embodiments shown and described herein may be variously changed, modified, and modified without departing from the spirit and scope of the present invention, particularly essential characteristics. That is, the matters disclosed and described in this specification are examples of the appended claims, and the scope of the present invention is not limited thereto, so the scope of the present invention can be specified only by the appended claims.

10: raw material mold
20: steel body
22: hollow
30: grooved steel body
33: home
39: diamond blade
90: perforated mold
100: guide
110: plate
111: Bridge Hall
120: bridge
130: horizontal bar
200: sanding device
210: work table
211: support
212: control home
213: side wall
214: workbench hall
220: sanding block
221: block hole
230: block case
231: case hole
240: fixing screw
241: pressure spring
250: rotating core
251: axis of rotation
252: rotation motor
254: neodymium magnet
256: first stage rotating core
255: second stage rotating core
260: moving rail
270: part of the guard rail
280: pneumatic cylinder
281: piston rod
282: cylinder holder
888 Coiler
999: uncoiler

Claims (3)

Preparing a steel body 20 of a hollow 22 center perforated (S10);
At regular intervals on the edge of the steel body (20) Processing the shaped groove 33 (S20);
Leveling the processed grooved steel body 30 (S30); and,
Step (S40) of washing the leveled grooved steel body 30 and dressing the surface;
Here, in the step (S10) of preparing the steel body 20,
Preparing a coiled raw material mold 10 (S1);
Uncoiling the coiled raw material mold 10 by fastening it to an uncoiler 999 (S2);
Forming a hollow 22 by punching the center of the uncoiled raw material mold 10 (S3);
Separating the perforated steel body 20 (S4); and,
A step (S5) of winding the perforated mold 90 after the perforation around the guide 100 and the coiler 888; includes,
After the step S40,
Further proceed with the step (S50) of fixing the grooved steel body 30 by the sanding device 200 and sanding the side surface,
The guide 100,
A pair of bridges 120 protruding above the plate 110 and having a bridge hole 111 formed thereon and a horizontal bar 130 penetrating the bridge hole 111 of the bridge; characterized in that the perforation mold 90 passes through the lower part of the pair of bridges 120 and the horizontal bar 130,
The sanding device 200,
It is erected by the supports 211 on both sides, the side wall 213 formed on the inner surface of which the control groove 212 is formed with threads protrudes upward, and the second stage rotation core 255 is in and out of the work table hole 214 is formed.
A sanding block 220 having a concave cross section and two upper and lower block holes 221 formed in the center;
a block case 230 in which the concave-shaped sanding block 220 is accommodated, a case hole 231 corresponding to the block hole 221 is formed, and a lower end 232 protrudes;
A fixing screw 240 passing through the block hole 221 and the case hole 231 and screwing into the control groove 212 through the pressure spring 241 located between the side wall 213 and the block case 230;
It is rotated by the rotation shaft 251 of the rotation motor 252 located at the lower side, and consists of a first stage rotation core 256 inserted into the hollow 22 of the grooved steel body 30 and a second stage rotation core 255 that enters and exits the worktable hole 214, and a plurality of neodymium magnets 254 are provided on the flat surface between the first stage rotation core 256 and the second stage rotation core 255. core 250;
A moving rail 260 to which the rotary motor 252 is fixed;
a guard rail unit 270 installed on an inner surface of the support 211 so that the movable rail 260 moves up and down while sliding; and,
A piston rod 281 is fixed to the lower surface of the movable rail 260 and installed on a cylinder holder 282 installed on the inner surface of the support 211, and the movable rail 260 is moved up and down. A pneumatic cylinder 280;
After the grooved steel body 30 is inserted into the first stage rotary core 256 and fixed by the neodymium magnet 254, the rotary motor 252 rotates, so that the side surface of the grooved steel body 30 is sanded. A method of manufacturing a cutting tool by perforation, characterized in that it touches and is surface-treated. delete delete