JP3007350B1 - Rotary blade for cutting - Google Patents

Abstract

An object of the present invention is to provide a rotary cutting blade capable of accurately performing a cutting operation to a predetermined depth, improving cutting accuracy and improving efficiency. A groove or a hole on the side surface of a substrate constituting a rotary blade for cutting is visually checked, and the groove or the hole of the rotary blade is cut to a depth substantially coincident with a pavement surface of a pavement path. , While moving in the horizontal direction while cutting, cutting can be performed accurately to a predetermined depth, and the cutting depth can be kept constant at all times. Damage can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary cutting blade used for cutting and cutting a structure (for example, a pavement, a pillar, a wall, etc.) made of concrete, asphalt, stone, or the like.

[0002]

2. Description of the Related Art Conventionally, as a method for cutting and cutting a pavement road as described above, for example, as shown in FIG. 8, a road cutter A (cutting wheel) is moved while traveling.
There is a method of rotating the cutting rotary blade 21 (diamond cutter) attached to the side of the vehicle body Aa to cut the pavement surface Ba of the pavement path B to a predetermined depth.

In this case, the cutting dimension is measured from the peripheral edge to the center of the cutting rotary blade 21, and a cutting mark 23 (for example, a line or a dot) indicating the cutting depth is written on a side surface of the substrate 22 with a writing tool such as a chalk. After that, while visually observing the cutting mark 23,
Cutting mark 23 of cutting rotary blade 21 and pavement surface B of pavement path B
Cutting is performed to a depth substantially matching with a.

[0004]

However, in the above-mentioned cutting method, the cutting is performed because muddy water containing cutting powder and earth and sand adheres during the work, or the portion marked with the cutting mark 23 wears. Since it is difficult to visually check the cutting mark 23 written on the rotary blade 21 for cutting, the cutting operation must be performed with the sense of an operator, and an error tends to occur in the cutting depth, and it is difficult to cut to a predetermined depth. . If the cutting is performed deeply, the buried object C (for example, a gas pipe, a water pipe, a high-voltage electric wire, a communication cable, etc.) may be cut or broken by mistake.

[0005] Further, as described above, if the cutting mark 23 disappears due to difficulty in visually observing the cutting mark 23 or the surface of the cutting rotary blade 21 is corroded and rusted, the cutting depth is changed every work. Therefore, the cutting mark 23 serving as a reference must be marked on the side surface of the cutting rotary blade 21, which has a problem that it takes time and effort for the preparation work. And a rotary blade having a thin groove (Japanese Patent Laid-Open No. 7-3289).
No. 28), the surface of the concave groove is easily corroded and rusted, and the above-mentioned problem occurs.

Further, when the cutting marks 23 (for example, holes, grooves, etc.) are engraved by laser processing, not only the processing is troublesome, but also the processing cost is high and the manufacturing required for one cutting rotary blade 21 is required. The problem that expense becomes high arises.

In view of the above-mentioned problems, the present invention cuts to a depth where the concave portion of the cutting blade and the cutting surface of the structure substantially match with respect to the concave portion on the side surface of the substrate constituting the rotary blade for cutting. Another object of the present invention is to provide a rotary cutting blade capable of accurately performing a cutting operation to a predetermined depth, improving cutting accuracy and improving efficiency.

[0008]

According to the first aspect of the present invention,
A cutting rotary blade in which a hard chip containing ultra-hard abrasive grains is fixed to a peripheral portion of a substrate having a substantially disk shape, wherein the side surface of the substrate has a circumference separated from the peripheral portion of the substrate by a predetermined distance. A rotary blade for cutting in which a concave portion is formed and the surface of the concave portion is covered with a film body.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the film body is a cutting rotary blade colored in an arbitrary color.

According to a third aspect of the present invention, in addition to the configuration of the first aspect, the concave portion is a cutting rotary blade formed continuously in a circumferential direction with respect to the side surface of the substrate. And

According to a fourth aspect of the present invention, there is provided a cutting rotary blade in which a plurality of the concave portions are formed at predetermined intervals in a circumferential direction with respect to the side surface of the substrate in combination with the configuration of the first aspect. It is characterized by the following.

[0012] The invention according to claim 5 is the invention according to claims 1 and 3 above.
Alternatively, in combination with the configuration described in 4, the cutting rotary blade has a plurality of the concave portions formed at predetermined intervals in a radial direction with respect to the side surface of the substrate.

[0013] The invention according to claim 6 is the invention according to claim 1,
In combination with the constitution described in 3, 4, or 5, the concave portion is a cutting rotary blade formed on both side surfaces of the substrate.

According to a seventh aspect of the present invention, in addition to the configuration of the first aspect, the film body is a cutting rotary blade formed by anodizing the surface of the concave portion.

According to an eighth aspect of the present invention, in addition to the configuration of the first aspect, the film body is a cutting rotary blade formed by coating the surface of the concave portion with a synthetic resin. .

[0016]

In the cutting rotary blade according to the first aspect, the concave portion is formed on the circumference at a predetermined distance (cutting depth) from the peripheral portion of the substrate. The position of the formed concave portion (for example, groove, hole, etc.) is visually checked, and the concave portion on the side surface of the substrate is adjusted to a depth substantially matching the cut surface of the structure. Can be performed accurately. In addition, the cutting depth can always be kept constant, and it is possible to prevent the embedded object from being cut or broken by mistake. In addition, since the concave portion is covered with the film, it is possible to prevent the concave portion from being corroded and rusted.

According to the second aspect of the present invention, in addition to the operation of the first aspect, the rotary blade for cutting is used to color the film in a color (for example, red, blue, yellow, etc.) which is contrasted with the substrate. The position can be easily confirmed by visual inspection, and accurate cutting can be performed.

According to the third aspect of the present invention, in addition to the operation of the first aspect, an arbitrary portion of the continuous concave portion can be formed.
Since the state is adjusted to substantially match the cutting surface of the structure, the work of setting the cutting depth can be easily performed.

In the cutting rotary blade according to the fourth aspect, in addition to the operation according to the first aspect, when rotating, a plurality of concave portions (for example, grooves, holes, patterns, patterns, etc.) become one line due to an afterimage phenomenon. , It can be accurately cut based on the line.

According to the fifth aspect of the present invention, in addition to the configuration of the first, third, or fourth aspect, the cutting rotary blade selects one of the plurality of recesses and performs cutting with reference to the recess.
It can be cut to any depth substantially corresponding to the number and spacing of the recesses.

According to the rotary blade for cutting according to the sixth aspect, in combination with the operation according to the first, third, fourth or fifth aspect, the cutting operation can be performed with reference to one concave portion formed on both side surfaces of the substrate. In addition, by setting a plurality of recesses formed on both side surfaces at different intervals, the cutting depth can be arbitrarily selected simply by turning the inside out.

According to the seventh aspect of the present invention, in addition to the function of the first aspect, since the concave portion is covered with a film formed by alumite processing, it is possible to prevent the concave portion from being corroded and rusted. In addition, the film is hardly peeled off and can be protected for a long time.

In the cutting rotary blade according to the eighth aspect, since the concave portion is covered with the synthetic resin film together with the operation according to the first aspect, it is possible to prevent the concave portion from being corroded and rusted. Since the film is deformed substantially in response to the bending and distortion of the substrate itself, the film is hardly peeled off and can be protected for a long time.

[0024]

According to the present invention, the concave portion on the side surface of the substrate constituting the rotary blade for cutting is adjusted and cut to a depth substantially matching the cut surface of the structure. Can be performed accurately, and the cutting depth can be kept constant at all times, so that it is possible to reliably prevent the embedded object from being cut or broken by mistake.

Further, since the recess is recessed from the side surface of the substrate and is covered with the film, it can be prevented from being corroded and worn, and labor and work for measuring the cutting depth can be avoided. In addition, the cutting accuracy and efficiency can be improved. In addition, since the concave portion is formed by cutting the side surface of the substrate, the concave portion can be manufactured at a lower cost than laser processing.

Further, since the substrate and the concave portion are arranged in a contrasting color, the position of the concave portion can be clearly seen during cutting, and the cutting operation can be performed accurately. Also, any fluorescent color may be used, so that the concave portion can be easily visually checked at night or when it is dim.

Furthermore, the operation of setting the cutting depth with reference to an arbitrary portion of the continuous concave portion can be performed quickly and easily. When a plurality of the recesses are formed, the recesses appear continuously to one line due to the afterimage phenomenon during rotation, so that the cutting operation can be performed while visually checking the position of the line formed by the recesses. .

Furthermore, since a cutting operation is performed by selecting one concave portion from a plurality of concave portions, cutting can be performed to an arbitrary depth substantially corresponding to the number and intervals of the concave portions. The cutting depth can be set according to the depth of the buried object.

Further, since the cutting operation can be performed with reference to either one of the concave portions formed on both side surfaces of the substrate, the labor and work for inverting the cutting rotary blade can be omitted. In addition, by setting a plurality of recesses formed on both side surfaces at different intervals, it is possible to arbitrarily select a cutting depth simply by turning the inside out, and to use a plurality of cutting rotary blades having different cutting dimensions. There is no need to manufacture a plurality of sheets, and the number of sheets and cost can be reduced.

Further, when the concave portion is covered with a film made of anodized or synthetic resin, the concave portion can be reliably prevented from being corroded and rusted, the film is hardly peeled off, and the visible state is long. Can be maintained for a period.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The drawing shows, as an example of a structure, a cutting rotary blade used for a road cutter (cutting grinding wheel) for cutting and cutting a pavement. In FIG. 1, the cutting rotary blade 1 (diamond cutter) is For example, low carbon alloy steel,
A slit 3 is formed in the peripheral portion of the substrate 2 formed of a steel plate or the like in a substantially disk shape in the radial direction (from the peripheral portion toward the center), and the slit 3 is formed in the circumferential direction. Are formed at predetermined regular intervals.

At the peripheral edge of the substrate 2 corresponding to the space between the slits 3, 3, a hard chip 4 containing ultra-hard abrasive grains such as natural or artificial diamond abrasive grains, ceramic abrasive grains, etc.
Is fixed.

At the center of the substrate 2, there is formed a mounting hole 5 for fixing to a rotating shaft (not shown) of a load cutter A (cutting wheel) shown by a virtual line in FIG.

On both side surfaces (or one side surface) of the substrate 2, a single concave groove portion 6 is formed around the mounting hole 5 continuously in the circumferential direction, and the groove portion 6 is formed. ,
A predetermined distance (for example, about 10 cm, about 15 cm, about 2
(Arbitrary intervals such as 0 cm).
In addition, the groove part 6 is formed at an arbitrary interval (for example,
cm or more).

As shown in FIG. 2, concave grooves 6 are formed in both sides (or one side) of the substrate 2 around the mounting hole 5 so as to be continuous in the circumferential direction. At the same time, a plurality of grooves 6 may be formed at predetermined regular intervals (for example, approximately 5 cm, approximately 10 cm, etc.) in the radial direction (from the peripheral edge toward the center).

The grooves 6 are arranged at predetermined regular intervals (for example, approximately 10 cm, approximately 15 cm, approximately 20 cm) from the peripheral edge of the substrate 2 toward the center.
cm, approximately 25 cm interval or approximately 10 cm, approximately 20 cm, approximately 30 c
m, an interval of approximately 40 cm). The grooves 6 may be formed at any intervals (for example, intervals of 5 cm or less or 10 cm or more).

As shown in FIG. 3, for example, when the thickness a of the substrate 2 is set to about 3 mm, the groove width b of the groove 6 is set to about 7 mm with respect to the thickness a as shown in FIG. And the groove depth c is set to about 0.5 mm. Therefore, even if the groove is formed on the side surface of the substrate 2 formed by laminating a plurality of metal plates, the strength of the portion where the groove 6 is formed becomes weak. In addition, stress and distortion hardly occur, and the strength required for the cutting operation can be maintained.

Incidentally, the groove width b and the groove depth c of the groove 6 may be changed to arbitrary dimensions substantially corresponding to the thickness a of the substrate 2.
For example, the groove width b may be set to about 7 mm or more, or the groove depth c may be set to about 0.5 mm or more.

The bottom surface or the entire inner surface of the groove 6 is uniformly coated with a metal (aluminum) oxide film 7 by a surface treatment such as alumite processing, and the film 7 has corrosion resistance and rust prevention. It is possible to reliably prevent the surface of the groove 6 from being corroded or rusted,
The visible state is maintained for a long time.

Further, the film body 7 may be formed by coating the bottom surface or the entire inner surface of the groove 6 with a synthetic resin having excellent heat resistance and abrasion resistance, such as a fluorine-based resin.
An effect approximately equivalent to that of the alumite processing described above is obtained.

The groove 6 is formed on the substrate 2 by applying a paint of an arbitrary color to the surface of the metal or resin film 7 or forming the film 7 with a synthetic resin colored in an arbitrary color. The colors are contrasted (for example, red, blue, yellow, etc.). Further, an adhesive material (for example, a tape, a seal, or the like) colored in an arbitrary color may be attached to the groove 6.

The metal film 7 itself is subjected to, for example, gold, gray,
It may be colored in any color such as bronze, or may be colored in any fluorescent color, so that the groove 6 can be easily visually checked at night or when it is dim.

When cutting the pavement path B by the cutting rotary blade 1 described above, first, as shown in FIG. 1, the load cutter A is moved along a cutting line (not shown) attached to the pavement surface Ba of the pavement path B. The cutting blade 1 attached to the side of the vehicle body Aa is rotated at a high speed to cut and cut the pavement surface Ba of the pavement path B along the cutting line.

At this time, the lower side surface of the cutting rotary blade 1 covered with the half-type protective cover Ab is visually checked from obliquely above or behind, and the groove 6 of the cutting rotary blade 1 and the pavement surface of the pavement path B are checked. Since the cutting is performed to a depth substantially equal to Ba, and the horizontal movement is performed while maintaining the state, the cutting operation to the predetermined depth can be performed accurately.

In addition, since the cutting is performed based on the groove 6,
The cutting depth can always be kept constant, and it is possible to prevent the embedded object C from being cut or broken by mistake.

Furthermore, since the groove 6 is recessed from the side surface of the substrate 2, the groove 6 can be prevented from being worn out or disappearing, and the time and labor for measuring the cutting depth can be reduced. In addition, the time required for the preparation work can be greatly reduced, and the cutting accuracy and efficiency can be improved. In addition, since the concave groove 6 is formed by cutting the side surface of the substrate 2, it can be manufactured at a lower cost than laser processing.

Further, since the surface of the groove 6 is covered with the film 7, it is possible to reliably prevent the groove 6 from being corroded and rusted, and to maintain a visible state for a long period of time. Moreover, even if dirt such as muddy water adheres to the groove 6, it can be easily washed and removed.

Further, the film body 7 is colored in an arbitrary color, and the substrate 2 and the groove 6 are arranged in a contrasting color.
During cutting, the position of the groove 6 can be clearly visually confirmed.
Cutting work can be performed accurately. In addition, when a desired fluorescent color is used, at night or when the color is dark, visual confirmation of the groove 6 can be easily performed.

Further, one groove 6 is selected from a plurality of grooves formed on the side surface of the substrate 2 and cutting is performed with reference to the groove 6, so that an arbitrary depth is substantially corresponded to the number of grooves 6 and the interval. The cutting depth can be set according to the situation at the work site (for example, the depth of the buried object C).

Furthermore, since the cutting operation can be performed with reference to the one groove 6 formed on both side surfaces of the substrate 2, the labor and operation for turning the cutting rotary blade 1 upside down can be omitted. In addition, by setting a plurality of grooves 6 formed on both side surfaces at different intervals, it is possible to arbitrarily select a cutting depth simply by turning over the front and back sides, and to obtain a cutting rotary blade 1 having different cutting dimensions. Since it is not necessary to manufacture a plurality of sheets, the number of sheets to be manufactured can be reduced, so that the number of sheets to be manufactured and the cost can be reduced.

FIG. 4 shows another example of the cutting rotary blade 1 in which concave grooves 8 having a substantially arc shape are alternately arranged.
On the same circumference centering on the mounting hole 5, it is formed at predetermined regular intervals in the circumferential direction, and the groove 8 is formed.
A plurality of strips are formed at predetermined regular intervals in the radial direction.

As shown in FIG. 5, an arbitrary width (about 6 m
m) are formed at a predetermined equal angle (for example, approximately 90 degrees) in the circumferential direction and a plurality of grooves 8 are formed at predetermined equal intervals (for example, approximately 50 mm) in the radial direction. ,
They are arranged in a substantially fan shape in a range forming an arbitrary angle (approximately 30 degrees or more, the following angle). Note that the angle may be changed to an arbitrary angle (an angle equal to or greater than 90 degrees) or an arbitrary interval (an interval equal to or greater than 50 mm).

At the time of rotation, the substantially arc-shaped groove portion 8 appears continuously to one line due to the afterimage phenomenon, so that it is not necessary to form a line or an annular shape, and the line formed by the groove portion 8 is used as a reference. It is possible to cut accurately, and it is possible to achieve substantially the same operation and effect as the above-described embodiment.

FIG. 6 shows another example of the cutting rotary blade 1 in which the substantially wave-shaped concave grooves 9 are alternately arranged, and the grooves 9 are arranged on the same circumference around the mounting hole 5. ,
While being formed at predetermined equal intervals in the circumferential direction,
A plurality of the grooves 9 are formed at predetermined regular intervals in the radial direction.

At the time of rotation, the substantially wave-shaped groove 9 can be seen continuously from one line, so that it is possible to cut accurately with reference to the line formed by the groove 9, and the above-described embodiment and Substantially the same operational effects can be obtained.

FIG. 7 shows another example of the cutting rotary blade 1 in which the substantially circular (or substantially elliptical) concave holes 10 are arranged. The substantially circular concave hole 10 is attached to the mounting hole 5. A plurality of concave holes 10 are formed on the same circumference as the center at predetermined regular intervals in the circumferential direction, and are formed at predetermined regular intervals in the radial direction.

At the time of rotation, the substantially round hole 10
Since it looks like a continuous line of the book, it can be cut accurately with reference to the line composed of the holes 10, and substantially the same operation and effect as the above-described embodiment can be obtained.

The grooves 8 and 9 and the holes 10 described above are used.
May be formed on both sides of the substrate 2, or the size, length, number, number of grooves, and intervals of the grooves 8 and 9 and the holes 10 may be arbitrarily changed.

The grooves 8 and 9 and the hole 1 on the same circumference
0 may be formed in different sizes, may be eccentrically arranged at an arbitrary angle, and may be arranged alternately, or may be arranged at the same angle.

The shape is not limited to the grooves 8, 9 and the holes 10, but may be any characters, numerals, patterns, patterns, etc. as long as they can be seen in a single line during rotation. The concave portion may be formed in a design shape such as.

In correspondence between the structure of the present invention and the above-described embodiment, the concave portion of the present invention is formed by the concave groove portion 6 of the embodiment.
The present invention is not limited to the configuration of the above-described embodiment, though it corresponds to 8, 9 and the concave hole portion 10 and other designs.

The above-mentioned grooves 6, 8, 9 and hole 1
Substrate 2 that constitutes the cutting rotary blade 1 by combining a plurality of 0
May be formed on one side surface or both side surfaces, and the side surface of the substrate 2 constituting the cutting rotary blade 1 may be colored in a color contrasting with the grooves 6, 8, 9 and the holes 10.

The above-mentioned rotary blade 1 for cutting is, for example, a wall cutter (wall sawing) for cutting columns, walls, and the like.
Can also be used.

[Brief description of the drawings]

FIG. 1 is a side view showing a cutting rotary blade in which a single groove is formed.

FIG. 2 is a side view showing another example of a cutting rotary blade in which a plurality of concave grooves are formed.

FIG. 3 is a sectional view showing a state in which the surface of the concave groove is covered with a film.

FIG. 4 is a side view showing another example in which a substantially arc-shaped groove is formed.

FIG. 5 is a side view showing another example in which the grooves are arranged in a substantially fan shape.

FIG. 6 is a side view showing another example in which a substantially wavy groove is formed.

FIG. 7 is a side view showing another example in which a substantially circular hole is formed.

FIG. 8 is a side view showing a cutting method using a conventional rotary blade for cutting.

[Explanation of symbols]

 A: Road cutter B: Pavement path C: Embedded object 1: Cutting rotary blade 2: Substrate 3: Slit 4: Chip 5: Mounting hole 6: Groove part 7: Film body 8, 9 ... Groove part 10: Hole part

Claims (8)

(57) [Claims] 1. A rotary blade for cutting in which a hard chip containing super-hard abrasive grains is fixed to a peripheral edge portion of a substantially disk-shaped substrate, said cutting edge being provided on a side surface of said substrate at a predetermined distance from the peripheral edge portion of said substrate. A rotary blade for cutting in which a concave portion is formed on a separated circumference and the surface of the concave portion is covered with a film. 2. The film according to claim 1, wherein said film is colored in an arbitrary color.
The rotary blade for cutting as described. 3. The cutting rotary blade according to claim 1, wherein the concave portion is formed continuously in a circumferential direction with respect to the side surface of the substrate. 4. The cutting rotary blade according to claim 1, wherein a plurality of said concave portions are formed at predetermined intervals circumferentially with respect to said substrate side surface. 5. The cutting rotary blade according to claim 1, wherein a plurality of the concave portions are formed at predetermined intervals in a radial direction with respect to the side surface of the substrate. 6. A cutting rotary blade according to claim 1, wherein said concave portions are formed on both side surfaces of said substrate. 7. The rotary blade for cutting according to claim 1, wherein the film body is formed by alumite processing the surface of the concave portion. 8. The cutting rotary blade according to claim 1, wherein said film body is formed by coating the surface of said concave portion with a synthetic resin.