JP2018114628A - Cutting tool and cutting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting tool on which cutting fluid of proper quantity can flow all over during cutting.SOLUTION: A chuck part 130 provided on a main body 110 is installed on a cutting machine main body 200, and a cutting part 120 provided on the tip and the peripheral surface of the main body 110 cuts the surface to be cut, cutting fluid flowing from injection tips 141 and 142 provided on the tip and the peripheral surface of the main body 110 from a flow channel 140 is injected, and a cutting tool 100 cuts the surface to be cut while rotating, while the cutting fluid is flowing.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cutting tool and a cutting method, and in particular, is mounted on a cutting machine body that moves parallel to a cutting surface or perpendicularly to a cutting surface, and continuously cuts a groove having a predetermined shape on the cutting surface. The present invention relates to a possible cutting tool and a cutting method.

  Conventionally, Japan is an earthquake-prone country that is called an earthquake powerhouse, and various preparations for earthquakes are indispensable. The most dangerous damage caused by this earthquake is the disaster caused by the collapse of buildings.

  Many buildings that are not seismically reinforced are said to have the potential to collapse in earthquakes with a seismic intensity of 6 or higher, and awareness of earthquake resistance is increasing every day in order to protect important lives and property from earthquakes and other disasters.

  In the past earthquake damage, large damage to pillars has been reported due to the effects of miscellaneous walls such as waist walls and hanging walls installed at the pillars of buildings. This was due to the fact that the miscellaneous wall was attached to the vicinity of the column, so that the length of the column was shortened and shear fracture was likely to occur. This damage to the pillars due to the shear failure was very dangerous because it led to the collapse of the building itself, and the damage was increased. Therefore, seismic reinforcement is known in which a slit is formed between a pillar and a wall of a building and the pillar and the wall are divided to reduce the influence of the wall on the pillar when an earthquake occurs.

FIG. 7 is a diagram illustrating a state in which an earthquake-resistant slit is formed at the edge of a building.
Therefore, as shown in FIG. 7, an opening 4 in which a window frame or the like is installed is provided in a wall body 3 formed between the pillar 1 and the pillar 2. By forming this opening 4, a waist wall 3 a to the floor surface 5 is formed at the lower part of the opening 4, and from the ceiling surface 6 to the upper surface of the opening 4 at the upper part of the opening 4. A drooping wall 3b is formed.

  By providing the earthquake-resistant slit 7 and the earthquake-resistant slit 8 in the pillar 1 and the pillar 2 so that the pillar 1 or the pillar 2 and the wall 3 are not connected to each other, and the length of the pillar 1 and the pillar 2 is not shortened, Damage to the pillar 1 and the pillar 2 can be reduced. Thus, by forming the earthquake-resistant slit 7 and the earthquake-resistant slit 8 in the building, the collapse of the building can be minimized.

  In addition to forming seismic slits in new buildings, buildings with seismic performance that meet current seismic standards by forming seismic slits in old buildings that do not meet current seismic standards and applying seismic reinforcement. (For example, refer to Patent Document 1). Thus, in order to form an earthquake-resistant slit in a concrete wall, it can be efficiently performed by cutting with a cutting machine equipped with a cutting tool.

FIG. 8 is a view showing a conventional cutting tool.
As shown in FIG. 8, the cutting tool 10 includes a round bar-shaped main body 11, and a tip of the main body 11 is made of, for example, a sintered body in which diamond abrasive powder and metal powder are mixed (hereinafter referred to as a diamond tip). The cutting blade 12 is provided in a cross shape, and the cutting blade 13 is spirally provided on the peripheral surface of the main body 11. The cutting tool 10 is attached to the cutting machine main body 20 at the base end of the main body 11. A chuck portion 14 for mounting is formed.

  A flow path 15 through which a cutting fluid flows for the purpose of suppressing wear of the cutting tool 10 due to heat generated during cutting and preventing scattering of the cut concrete dust is provided through the inside of the main body 11 to the tip of the main body 11. The cutting fluid is ejected from the tip of the cutting tool 10.

  The cutting tool 10 is mounted on the cutting machine main body 20, the cutting tool 10 is rotated while spraying the cutting fluid from the tip, and the tip of the cutting tool 10 is moved toward the wall 3, thereby cutting blade 12 can cut the thickness direction of the wall body 3 to form a recess in the wall body 3. In addition, the cutting tool 10 is moved in the groove direction of the left row earthquake-resistant slit in a state where the recess is formed in the wall 3, so that the cutting blade 13 can cut the wall 3 and form the groove in the wall 3. . Thus, in order to form an earthquake-resistant slit in the wall 3 made of concrete, the earthquake-resistant slit can be easily formed using the cutting machine body 20 to which the cutting tool 10 is attached.

JP 2002-36232 A

  However, since the conventional cutting tool 10 has a long rod shape, the cutting fluid does not flow into the whole, and the cutting tool 10 is likely to be clogged with cutting waste, or the cutting blade is heated to a high temperature. There was a problem that the wear of the tool 10 became violent, and further, a severe cutting sound was generated.

  The clogging of cutting waste caused by the cutting fluid not flowing around the entire cutting tool 10 reduces the cutting ability of the cutting machine, thereby prolonging the construction time. Further, the wear of the cutting tool 10 that is increased by the high temperature of the cutting tool 10 increases the construction cost. In addition, severe cutting noise generated during cutting has become a source of noise. Thus, the problem that the cutting fluid does not enter the entire cutting tool 10 causes various problems as described above.

  Therefore, as a countermeasure, a method of pouring a cutting fluid from the outside toward the construction site during cutting can be considered. However, the cutting tool 10 is rotating at the time of cutting, and it was difficult for the cutting fluid to flow into the wall 3 to be cut. In addition, by performing the work while flowing the cutting fluid from the outside to the construction site in this way, the cutting waste generated by cutting flows to the periphery together with the cutting fluid, and concrete powder generated by cutting called Noro water, etc. There was a problem that a large amount of sewage containing water was generated.

  Moreover, as a measure for causing the cutting fluid to wrap around the entire cutting tool 10, the cutting tool 10 is periodically removed, the cutting fluid is poured into the formed recesses and grooves, and the cutting tool 10 is inserted into the working portion again for cutting. A way to do this is also conceivable. However, such countermeasures have not been a fundamental solution because the process of inserting and removing the cutting tool 10 from the construction site takes time and labor, and the construction time is prolonged.

  It is also conceivable that the cutting fluid reaches the entire cutting tool 10 by shortening the length of the cutting tool 10 itself. In order to form the earthquake-resistant slit, an earthquake-resistant slit having a considerable depth with respect to the wall thickness is required. However, if the length of the cutting tool 10 itself is shortened, the depth at which the groove is cut into the wall is also reduced. In order to cut a seismic slit having a desired depth, it is necessary to repeat the process of further cutting a recess in the formed groove and then further cutting the groove, resulting in construction time. There was a problem of becoming longer.

  This invention is made | formed in view of such a point, and it aims at providing the cutting tool which can cut, pouring a suitable quantity of cutting fluid into the cutting tool whole.

  In the present invention, in order to solve the above problem, in a cutting tool that is mounted on a cutting machine body that moves in parallel while being inserted perpendicularly to a cutting surface, and that can continuously cut a groove of a predetermined shape on the cutting surface, A cutting blade provided on the tip and peripheral surface of a rod-like main body mounted on the cutting machine main body, and an injection port for injecting a cutting fluid provided on the tip and peripheral surface of the main body. A cutting tool is provided.

  As a result, the cutting blade provided on the tip and the peripheral surface of the rod-shaped main body mounted on the cutting machine main body cuts the cutting surface, and the cutting fluid is discharged from the injection port provided on the tip and the peripheral surface of the main body. Be injected.

  According to the present invention, in the cutting method in which the cutting tool attached to the cutting machine main body that moves in parallel while being inserted perpendicularly to the cutting surface continuously cuts a groove of a predetermined shape on the cutting surface, the cutting machine A cutting blade provided on the tip and peripheral surface of a rod-like main body mounted on the main body rotates, and the cutting surface is cut while spraying a cutting fluid provided on the tip and peripheral surface of the main body. A cutting method is provided.

  As a result, the cutting blade provided on the tip and peripheral surface of the rod-like main body mounted on the cutting machine main body rotates, and the cutting surface is cut while spraying the cutting fluid provided on the tip and peripheral surface of the main body. .

According to the cutting tool of the present invention, the injection port for injecting the cutting fluid provided at the front end and the peripheral surface of the main body cuts the cutting surface while injecting the cutting fluid. Can wrap around.
Thereby, it is possible to suppress the cutting tool from being clogged, to suppress the cutting blade from becoming high temperature, to suppress the wear of the cutting tool, and to suppress the cutting sound at the time of cutting.

It is the side view and front view which show the cutting tool which concerns on this Embodiment. It is the side view and sectional drawing which show the cutting tool which concerns on this Embodiment. It is the projection view and perspective view from the front end side of the cutting tool which show the position of the flow path of a cutting fluid, and an injection port. It is an enlarged view which shows the detail of the front-end | tip part of a cutting blade part. It is a figure which shows the procedure which forms the recessed part for inserting a cutting tool in a wall part. It is a figure which shows the procedure which forms an earthquake-resistant slit using a cutting tool. It is a figure which shows a mode that the earthquake-proof slit was formed in the pillar of a building. It is a figure which shows the conventional cutting tool.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a side view and a front view showing a cutting tool according to the present embodiment.
As shown in FIG. 1, the cutting tool 100 includes a main body part 110, a cutting blade part 120, a chuck part 130, and a flow path 140.

  The cutting tool 100 is detachably attached to a cutting machine body 200 (not shown). The cutting machine body 200 can cut the cutting surface by causing the cutting tool 100 to approach the cutting surface while rotating the cutting tool 100 in the rotation direction indicated by the arrow R.

  The cutting tool 100 is provided with a round bar-shaped main body 110, a cutting blade 120 is provided at the distal end and the peripheral surface of the main body 110, and the cutting tool 100 is provided at the base end of the main body 110. A chuck portion 130 to be attached to the cutting machine main body 200 is formed.

  The cutting blade portion 120 provided at the tip and the peripheral surface of the main body 110 is composed of a plurality of segments having different shapes. Specifically, the cutting blade portion 120 is configured by a first segment 121 provided at the tip of the main body 110, a second segment 122 and a third segment 123 provided on a side surface of the main body 110.

  The first segment 121 is a cutting blade made of, for example, a diamond tip, and has a cubic shape having a length equal to or shorter than the radius of the main body 110, and the first segment 121 is formed of the main body 110. A cross is provided at the tip. The size, quantity, and arrangement of the first segment 121 can be selected as appropriate.

  At the time of construction, the first segment 121 provided at the tip of the main body 110 rotates in the rotation direction indicated by the arrow R, whereby the cutting surface in the thickness direction of the wall can be cut. The first segment 121 includes a curved surface 121a that is curved in the rotation direction indicated by the arrow R, and the processed cutting surface can be smoothly finished by loosely contacting the cutting surface.

  The second segment 122 and the third segment 123 are segments having different sizes provided along the peripheral surface of the main body 110. The second segment 122 and the third segment 123 are cutting blades made of, for example, a diamond tip, and have a cubic shape in which a sectional view in the radial direction of the main body 110 is a parallelogram.

  The second segment 122 and the third segment 123 are curved along the peripheral surface of the main body 110, and the second segment 122 and the third segment 123 are arranged on the peripheral surface of the main body 110 in the rotation direction of the cutting tool 100. The second segment 122 and the third segment 123 are arranged in a spiral shape and are fixed with an adhesive or the like while maintaining a constant interval in the rotational direction between the second segment 122 and the third segment 123. As a result, spiral cutting waste discharge grooves 124 are formed between the second segment 122 and the third segment 123 arranged in a spiral on the peripheral surface of the cutting tool 100 and the segments arranged in a spiral. Is done.

  The second segment 122 and the third segment 123 have an inclined surface that is inclined in a direction opposite to the rotation direction of the cutting tool 100, and by smoothing the contact with the cutting surface, the cutting surface after processing is smoothed. Can be finished.

  Further, the second segment 122 and the third segment 123 have different heights in the rotation axis direction of the cutting tool 100, and the second segment 122 is formed to have a height higher than that of the third segment 123. . Further, the second segment 122 having a height higher than that of the third segment 123 is provided so as to protrude from the distal end portion of the peripheral surface of the cutting tool 100 and from the main body portion 110 in the distal end direction. Further, the protruding portion is provided to be the same height as the first segment 121.

  The segments arranged in the second row from the tip of the cutting tool 100 are formed in a spiral shape by alternately arranging the second segment 122 and the third segment 123 in the rotation direction of the cutting tool 100. The cutting surface in the rotational direction of each segment is uneven. As a result, the cutting surface can be smoothed. Details will be described later.

  The flow path 140 is a cylindrical tube formed inside the main body 110, and the cutting fluid that has flowed through the flow path 140 is provided at the injection port 141 provided at the tip of the main body 110 and the peripheral surface. Injected by a plurality of injection ports 142.

  The injection port 141 provided at the front end of the main body 110 is provided near the center of the rotation axis, and reduces cutting blade wear at a site where the first segment 121 cuts, suppresses high temperature and cutting noise during cutting. Can do. Moreover, the cutting fluid sprayed from the injection port 141 flows into the cutting waste discharge groove 124 together with the cutting waste, and is discharged toward the chuck portion 130 along the cutting waste discharge groove 124 as the cutting tool 100 rotates.

  A plurality of injection ports 142 provided on the peripheral surface of the main body 110 are provided on the cutting waste discharge groove 124. Moreover, it is desirable to provide this injection port 142 on the cutting waste discharging groove 124 close to the tip. In this case, when the injection port 142 is provided closer to the chuck portion 130, the cutting fluid flows from the chuck portion 130 side toward the tip of the cutting tool 100, so the cutting fluid before the cutting fluid reaches the tip of the cutting tool 100. This is because the cutting pressure does not reach the tip of the cutting tool 100. A specific arrangement of the injection ports 142 will be described later.

  In this way, by providing the cutting fluid injection port at the tip and peripheral surface of the cutting tool 100, the cutting fluid flows into the entire cutting surface, and the cutting surface can be cut while flowing the cutting fluid. Damage to the cutting tool 100 due to uneven wear or high temperature and noise due to cutting noise can be suppressed.

FIG. 2 is a side view and a cross-sectional view showing the cutting tool according to the present embodiment.
FIG. 2A shows a cross-sectional view of the tip AA of the cutting tool 100.
As shown in FIG. 2A, a cutting fluid injection port 141 is provided at the tip of the main body 110, and the first segment 121 is provided in a cross shape around the injection port 141. In addition, four second segments 122 are provided on the circumferential surface of the main body 110 on a diagonal line with a certain interval.

FIG. 2B shows a cross-sectional view of the tip BB of the cutting tool 100.
As shown in FIG. 2B, a cylindrical flow path 140 is provided in the center of the main body 110, and an injection port 142 branched from the flow path 140 in a cross shape is provided on the peripheral surface of the main body 110. It has been. Further, the injection port 142 is disposed so as to reach the cutting waste discharging groove 124 formed on the peripheral surface of the cutting tool 100.

  In addition, two second segments 122 and two third segments 123 are provided diagonally on the peripheral surface of the main body 110, and each segment is indicated by an arrow R rather than the position of the second segment 122 in FIG. It is arranged at a position moved in the rotation direction.

FIG. 2C shows a cross-sectional view of the tip portion CC of the cutting tool 100.
As shown in FIG. 2C, a cylindrical flow path 140 is provided at the center of the main body 110, and an injection port 142 branched from the flow path 140 into a single letter shape is a circumferential surface of the main body 110. Is provided. Further, the injection port 142 is disposed so as to reach the cutting waste discharging groove 124 formed on the peripheral surface of the cutting tool 100.

  In addition, two second segments 122 and two third segments 123 are provided diagonally on the peripheral surface of the main body 110, and the second segment 122 is the same as the second segment 122 in FIG. Further, the third segment 123 is arranged at a position moved in the rotational direction indicated by the arrow R from the position of the second segment 122 in FIG.

FIG. 2D shows a cross-sectional view of the tip portion DD of the cutting tool 100.
As shown in FIG. 2D, a cylindrical flow path 140 is provided at the center of the main body 110, and an injection port 142 branched from the flow path 140 in a cross shape is provided on the peripheral surface of the main body 110. It has been. Further, the injection port 142 is disposed so as to reach the cutting waste discharging groove 124 formed on the peripheral surface of the cutting tool 100.

  Further, on the peripheral surface of the main body 110, four third segments 123 are arranged at positions moved in the rotational direction indicated by the arrow R from the positions of the second segment 122 and the third segment 123 in FIG.

  2D, the sectional view of the cutting tool 100 in the direction of the chuck portion 130 is the rotation direction indicated by the arrow R in the four third segments 123 provided on the peripheral surface of the main body portion 110 as in FIG. However, the injection port 141 is not installed and only the flow path 140 is provided inside the main body 110.

  As described above, by installing the fixed number of injection ports 141 and the injection ports 142 at the distal end portion of the cutting tool 100 and the distal end portion of the peripheral surface, the cutting fluid can be efficiently poured into the entire cutting tool 100. In addition, by providing the nozzle 142 provided on the peripheral surface on the spirally formed cutting waste discharge groove 124, the cutting tool 100 rotates to allow the cutting fluid to flow toward the chuck portion 130. The cutting fluid can be made to wrap around 100 as a whole. Further, it is possible to push away the cutting waste that tends to clog the cutting waste discharge groove 124.

FIG. 3 is a projection view and a perspective view from the tip end side of the cutting tool showing the flow path of the cutting fluid and the position of the injection port.
As shown in FIG. 3, the flow path 140 provided at the center of the main body 110 is branched to form an injection port 142 on the peripheral surface of the main body 110. However, for convenience, each segment and the cutting waste discharging groove 124 are omitted.

  FIG. 3A is a projection view from the front end side of the cutting tool 100. The injection port 142a, the injection port 142b, and the injection port 142c are arranged along the cutting waste discharge groove 124 formed in a spiral shape. Further, the amount of the cutting fluid sprayed is adjusted by adjusting the number of the spray ports 141 from the front end side of the cutting tool 100 to four places, two places, and four places.

  FIG. 3B is a perspective view showing the positions of the flow path 140 and the injection port 142. Thus, by arranging the injection ports 141 and 142 not only at the tip of the cutting tool 100 but also at the peripheral surface, the cutting fluid can be efficiently injected onto the peripheral surface of the cutting tool 100. Further, by arranging the injection port 142 on the cutting waste discharging groove 124, the cutting waste can be efficiently swept away.

FIG. 4 is an enlarged view showing details of the tip of the cutting blade.
As described above, the second segment 122 and the third segment 123 provided on the peripheral surface have different heights in the rotation axis direction of the cutting tool 100.

  As shown in FIG. 4, a second segment 122 is disposed along the circumferential surface at the tip of the cutting tool 100. Here, as described above, the second segment 122 is arranged in one diagonal segment arranged in the second row from the tip of the cutting tool 100 toward the chuck portion 130, and the third segment is arranged in the other diagonal segment. By arranging the segment 123, the cutting surface in the rotational direction of each segment formed in a spiral shape becomes uneven.

Specifically, a difference D can be provided between the step shape of the upper segment and the step shape of the lower side across the cutting waste discharging groove 124 shown in FIG.
Thereby, the cutting surface of the third segment 123 which rotates next can cut the cutting trace T which arises when there is a level | step difference between each segment at the time of cutting. That is, the cutting surface can be cut more smoothly.

  The advantage of smoothing the cutting surface is to facilitate the insertion of the slit material to be inserted into the formed earthquake-resistant slit. Usually, after forming an earthquake-resistant slit, a slit material is inserted into the slit as a cushioning material and waterproofed. At this time, if the cutting trace T remains on the cutting surface, it becomes difficult to insert the slit material, and the construction takes time. Therefore, since the cutting surface can be smoothly cut as described above, the slit material can be easily inserted. Moreover, it can also suppress that the slit material to insert damages.

FIG. 5 is a diagram showing a procedure for forming a recess for inserting a cutting tool in the wall.
As shown in FIG. 5, before forming an earthquake-resistant slit in the wall part 300 using the cutting tool 100, the preparation which forms a recessed part in the wall part 300 by the procedure of (A)-(D) previously is performed.

  FIG. 5A shows a state in which the core drill bit 400 is attached to the cutting machine body 200 and the recesses are formed to a certain depth at which the wall portion 300 is cut. Thus, before using the cutting tool 100, in order to form the recessed part which can insert the cutting tool 100 in the wall part 300 previously, a recessed part is opened in the wall part 300 using the core drill bit 400 grade | etc.,.

  FIG. 5B shows a state where a cylindrical hole is formed in the wall portion 300 by the cutting machine body 200 to which the core drill bit 400 is attached. When the drilling is completed with the cutting machine body 200 to which the core drill bit 400 is attached, the cutting machine body 200 to which the core drill bit 400 is attached is removed from the wall 300. Thereafter, the wall portion 300 is left with the cylindrical concrete 310.

  FIG. 5C is a diagram showing an operation of removing the concrete 310 left on the wall portion 300. The concrete 310 left on the wall 300 is inserted into the gap between the holes formed by the core drill bit 400 or the like, and the concrete 310 is divided inside the wall 300 and taken out to the outside.

  FIG. 5 (D) shows a state where the concrete 310 left on the wall portion 300 has been removed. As shown in FIG. 5C, the concrete 310 left on the wall portion 300 is divided and taken out to the outside, but it is difficult to completely take out the concrete 310 to the outside. The piece 311 remains. The remaining concrete piece 311 is cut with a cutting tool 100 to be used later.

  Thus, in order to form the earthquake-resistant slit using the cutting tool 100, a hole for inserting the cutting tool 100 is formed in advance, and a groove-shaped earthquake-resistant slit is formed using the cutting tool 100 as will be described later. To do.

FIG. 6 is a diagram illustrating a procedure for forming an earthquake-resistant slit using a cutting tool.
As shown in FIG. 6, the groove part which is an earthquake-resistant slit is formed in the wall part 300 in the procedure of (A)-(D) using the cutting tool 100. FIG.

FIG. 6A shows a state in which the cutting tool 100 is mounted on the cutting machine main body 200 and the cutting tool 100 is inserted into a recess formed in advance in the wall portion 300.
As shown in FIG. 6A, the cutting tool 100 is inserted into a recess provided in advance in the wall 300. A concrete piece 311 is left behind in the concave portion of the wall 300, and the concrete piece 311 is moved by moving the cutting machine body 200 on which the cutting tool 100 is mounted in the thickness direction of the wall while rotating the cutting tool 100. Can be cut.

FIG. 6B shows a state immediately after cutting the concrete piece 311 left behind in the recess formed in the wall 300 using the cutting machine body 200 to which the cutting tool 100 is attached.
As shown in FIG. 6 (B), the cutting machine body 200 equipped with the cutting tool 100 is moved in the thickness direction of the wall to cut the concrete piece 311. When the cutting surface becomes flat, the cutting is completed. ing. In this way, the first segment 121 provided at the tip of the cutting tool 100 can cut the concrete piece 311 left in the wall thickness direction.
Next, the cutting machine body 200 to which the cutting tool 100 is attached is moved vertically downward or horizontally to form a groove in the wall 300.

FIG. 6C shows a state in which the wall portion 300 is cut and the groove portion is formed using the cutting machine body 200 to which the cutting tool 100 is attached.
As shown in FIG. 6C, the wall portion 300 is cut by moving the cutting machine main body 200 on which the cutting tool 100 is mounted in the vertical downward direction or the horizontal direction, and a groove portion is formed in the wall portion 300. This formed groove becomes an earthquake-resistant slit. Thus, the second segment 122 and the third segment 123 provided on the peripheral surface of the cutting tool 100 can cut the wall portion 300 to form a groove portion.

As described above, the earthquake-resistant slit that is a groove portion can be formed in the wall portion 300 through the steps of FIGS.
Looking at the above process, when cutting the groove, the entire cutting blade 120 provided in the cutting tool 100 is used, but when cutting the concrete piece 311 left in the recess as shown in FIG. As described above, the tip portion of the cutting blade portion 120 has a heavy load and tends to cause uneven wear.

  Therefore, by making the size of the second segment 122 provided at the tip of the cutting blade 120 larger than that of the third segment 123, uneven wear can be suppressed, and the entire cutting tool 100 can be worn on average. . Thereby, the lifetime of the cutting tool 100 can be lengthened and cost can be reduced.

  In this embodiment, the cutting machine main body 200 to which the cutting tool 100 is attached is moved vertically downward or horizontally to form an earthquake-resistant slit as a groove in the wall part 300. However, the cutting machine main body to which the cutting tool 100 is attached is formed. 200 may be moved vertically upward to form a seismic slit as a groove in the wall 300. Further, not only the vertical direction but also a diagonal direction can be set arbitrarily.

  In this embodiment, the earthquake-resistant slit which is a groove having the same depth as the length of the cutting blade 120 included in the cutting tool 100 is formed. However, when the earthquake-resistant slit having a depth greater than the length of the cutting blade 120 is necessary. Further, a deeper earthquake-resistant slit can be formed by further forming a concave portion in the formed groove portion and repeating the steps of FIGS.

DESCRIPTION OF SYMBOLS 1, 2 Column 3 Wall body 3a Waist wall 3b Hanging wall 4 Opening part 5 Floor surface 6 Ceiling surface 7, 8 Earthquake-resistant slit 10 Cutting tool 11 Main body 12, 13 Cutting blade 14, 130 Chuck part 15, 140 Flow path 20, 200 Cutting machine main body 100 Cutting tool 110 Main body portion 120 Cutting blade portion 121 First segment 121a Curved surface 122 Second segment 123 Third segment 124 Cutting waste discharge groove 141, 142, 142a, 142b, 142c Injection port 300 Wall portion 310 Concrete 311 Concrete piece 400 Core drill bit 500 Bar D Difference R Arrow T Cutting trace

Claims (16)

In a cutting tool that is mounted on a cutting machine body that moves in parallel while being inserted perpendicularly to the cutting surface, and can continuously cut a groove of a predetermined shape on the cutting surface,
A cutting blade provided on the tip and peripheral surface of a rod-shaped main body mounted on the cutting machine main body;
An injection port for injecting a cutting fluid provided at the tip and peripheral surface of the main body,
A cutting tool comprising: The injection port is
The cutting tool according to claim 1, wherein the cutting tool is provided at a distal end portion of the peripheral surface of the main body portion. The injection port provided at the tip of the peripheral surface of the main body is
The cutting tool according to claim 2, wherein the cutting tool is provided on an ejection surface on a one-step section of the main body. The injection surface is provided with a first injection surface and a second injection surface from the tip of the peripheral surface of the main body,
The cutting tool according to claim 3, wherein the number of injection ports provided in the second injection surface is smaller than the number of injection ports provided in the first injection surface. A third injection surface is further provided at the tip of the peripheral surface of the main body,
The cutting tool according to claim 4, wherein the number of injection ports provided in the third injection surface is greater than the number of injection ports provided in the second injection surface. The injection port provided at the tip of the peripheral surface is
Four injection ports provided in the first injection surface;
Two injection ports provided in the second injection surface;
Four injection ports provided in the third injection surface;
The cutting tool according to claim 5, comprising: The cutting blade portion is
It consists of an array of multiple segments,
The segment is
The cutting tool according to claim 1, wherein the cutting tool is arranged on a tip and a peripheral surface excluding an injection port provided in the main body. The cutting blade portion is
8. The cutting tool according to claim 7, wherein the segment is composed of at least one spiral array arranged in a spiral.   The cutting tool according to claim 8, further comprising a cutting waste discharge groove for discharging cutting waste between a segment constituting the spiral arrangement and a segment adjacent to the rotation direction of the main body. The injection port is
The cutting tool according to claim 9, wherein the cutting tool is provided in the cutting waste discharge groove. The segment is
A first segment provided at a tip of the main body,
A second segment provided on the peripheral surface of the main body,
A third segment provided on the peripheral surface of the main body and having a shorter length in the longitudinal direction of the main body than the second segment;
The cutting tool according to claim 2, further comprising: The first segment is
The cutting tool according to claim 11, further comprising a curved surface curved in a rotation direction of the main body. The second segment is
The cutting tool according to claim 11, wherein the cutting tool is provided at a distal end portion of the peripheral surface of the main body portion. The second segment and the third segment are:
The cutting tool according to claim 13, further comprising an inclined surface that is inclined in a direction opposite to a rotation direction of the main body portion. The rotation trajectory on which the inclined surface of the second segment rotates is
The cutting tool according to claim 14, wherein the cutting tool is arranged at a position different from the rotation trajectory of the inclined surface adjacent to the rotation direction of the main body portion. In a cutting method in which a cutting tool attached to a cutting machine main body that moves parallel to the cutting surface in a vertically inserted state continuously cuts a groove of a predetermined shape on the cutting surface,
The cutting blade provided on the tip and peripheral surface of the rod-like main body mounted on the cutting machine body rotates, and the cutting surface is cut while spraying the cutting fluid provided on the tip and peripheral surface of the main body. A cutting method characterized by the above.

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