JP2022147149A - Cutting blade and method for manufacturing cutting blade - Google Patents

Abstract

To provide a cutting blade which can improve blade rigidity while satisfactorily maintaining sharpness of a cutting edge part, and a method for manufacturing the same.SOLUTION: A cutting blade comprises: a bond phase 1 which is a discoidal around a central axis O, on an outer peripheral part of which a cutting edge part 11 is located; a plurality of abrasive grains which are dispersed at least in the cutting edge part 11; and a plurality of bond reinforcement parts 3 which are held by the bond phase 1, and have a Young's modulus higher than that of the bond phase 1. The bond phase 1 has the cutting edge part 11, and a blade main body part 12 which is positioned on a radial inner side with respect to the cutting edge part 11, and the plurality of bond reinforcement parts 3 are located on the blade main body part 12.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a cutting blade and a method for manufacturing the same, and more particularly, in technical fields requiring individualization such as cutting green sheets before sintering such as MLCCs (multilayer ceramic capacitors). The present invention relates to a cutting blade used in the field of electronic material manufacturing, which employs a manufacturing method that makes the cutting process more flexible, and in technical fields where the cutting speed is particularly high and straightness is likely to be hindered, and a method for manufacturing the same.

2. Description of the Related Art Conventionally, thin cutting blades used for cutting green sheets such as MLCCs (so-called raw ceramics) are known.
For example, in the high-rigidity cutting blade described in Patent Document 1, the entire blade including the blade outer peripheral portion (cutting edge portion) is made of cemented carbide, cermet, or a high-hardness intermetallic compound as a bond material, and is made of diamond or cBN. It is an all-blade type that is constructed as a sintered body with one or two types of abrasive grains.

Japanese Patent Application Laid-Open No. 2003-326466

In Patent Document 1, although the rigidity of the blade as a whole is increased, since the bond phase is cemented carbide or the like, the hardness of the cutting edge is also high, and the abrasive grains are less likely to sharpen spontaneously. For this reason, sharpness tends to deteriorate, and straightness during cutting is hindered.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cutting blade and a method for manufacturing the same, which can improve the rigidity of the blade while maintaining good sharpness of the cutting edge.

One aspect of the cutting blade of the present invention is a disc shape centered on the central axis, a bond phase in which a cutting edge portion is arranged on the outer peripheral portion, and a plurality of abrasives dispersed at least in the cutting edge portion. and a plurality of bond reinforcement portions held by the bond phase and having a higher Young's modulus than the bond phase, wherein the bond phase extends radially inward from the cutting edge portion and the cutting edge portion. a blade body portion positioned thereon, wherein a plurality of said bond reinforcements are disposed on said blade body portion.

According to the present invention, a bond reinforcing portion having a higher Young's modulus than that of the bond phase is arranged in the blade body portion of the bond phase. As a result, the rigidity of the blade main body is increased, and the blade rigidity of the cutting blade as a whole is also improved. In the present invention, since the strength of the bond phase is increased by the bond reinforcement portion, rather than by increasing the hardness of the material itself that constitutes the bond phase, the action of suitably generating abrasive grains on the cutting edge portion, that is, self-sharpening The action can be maintained well.

Therefore, according to the present invention, sharpness of the cutting edge can be maintained satisfactorily while increasing blade rigidity, and straightness during cutting can be stably ensured. As a result, the cutting accuracy is stably enhanced. Various materials such as conventional plating phase, metal bond phase, resin bond phase, and vitrified bond phase can be used as the material of the bond phase. For example, compared to the case where an expensive cemented carbide or the like is used as the material of the bond phase in order to increase the rigidity of the bond phase, the cutting blade can be manufactured at low cost according to the present invention.

In the above cutting blade, the bond reinforcing portion extends in one direction when viewed from the axial direction, and the radial position of one of both ends of the bond reinforcing portion and the radial position of the other end of the bond reinforcing portion are aligned with each other. preferably different.

In this case, the bond reinforcing portion may extend radially or may extend circumferentially along the radial direction. As a result, the strength of the bond phase at each position in the radial direction can be easily equalized, and the rigidity of the bond phase at each position in the radial direction can be stably increased. The strength along the radial direction of the bond phase is increased, and straightness during cutting is more stable.

In the above cutting blade, it is preferable that the plurality of bond reinforcing portions are arranged at rotationally symmetrical positions with respect to the central axis.

In this case, the rigidity of the bond phase in the circumferential direction is made uniform, and straightness during cutting is more stably ensured.

In the above cutting blade, the bond reinforcing portion is preferably exposed on the plate surface facing the axial direction of the bond phase.

For example, compared to the case where the bond reinforcing portion is not exposed from the plate surface facing the axial direction of the bond phase, according to the above configuration of the present invention, the axis of the bond reinforcing portion occupies the axial dimension (thickness dimension) of the bond phase. The proportion of directional dimensions can be increased. That is, a large axial dimension of the bond reinforcing portion can be ensured. Therefore, the blade rigidity is stably increased.

In the above cutting blade, it is preferable that the bond reinforcing portion has a recess recessed from the outer surface of the bond reinforcing portion.

In this case, part of the bond phase enters the concave portion of the bond reinforcing portion during manufacturing of the cutting blade. That is, part of the bond phase is arranged in the recess. This provides an anchoring effect and enhances the holding power of the bond reinforcing portion. The bond reinforcing portion is strongly integrated with the bond phase, and can be prevented from coming off from the bond phase.

In the above cutting blade, it is preferable that the bond-reinforcing portion has a rough surface portion having a surface roughness of a predetermined value or more on the outer surface of the bond-reinforcing portion.

In this case, when the cutting blade is manufactured, the bond phase adheres to the rough surface portion of the bond reinforcing portion, thereby ensuring a large contact area between the bond reinforcing portion and the bond phase. This enhances the holding power of the bond reinforcement to the bond phase. The bond reinforcing portion is strongly integrated with the bond phase, and can be prevented from coming off from the bond phase.

In the above cutting blade, the bond reinforcing portion may have a rod shape extending in one direction when viewed from the axial direction.

In this case, when manufacturing the cutting blade, it is easy to dispose the bond reinforcing portion on the blade main body and to handle it easily. In addition, the function (action) of each bond reinforcing portion is less likely to vary. Therefore, the effects of the present invention are more likely to be stabilized.

In the above cutting blade, the bond reinforcing portion may extend in one direction when viewed from the axial direction, and the bond reinforcing portion may have a plurality of granular bodies arranged in the one direction.

In this way, a plurality of grains arranged in one direction can also provide a bond reinforcing portion in the blade main body. Moreover, in this case, the degree of freedom in the shape of the bond reinforcing portion is increased.

In the cutting blade, the blade main body includes a flange contact portion arranged radially inward of a boundary between the blade main body and the cutting edge portion, and a radial direction between the boundary and the flange contact portion. and an exposed body portion located therebetween, wherein said bond reinforcement is disposed across said flange contact portion and said exposed body portion.

The flange contact portion of the blade body is a portion that is pressed against and held by the flange of the main shaft of the cutting device. Further, the main body exposed portion is located radially outside the flange, that is, is a portion exposed to the outside without being pressed by the flange. By arranging the bond reinforcement part from the flange contact part to the body exposed part radially outside thereof, the rigidity of the part other than the flange contact part of the bond phase, that is, the rigidity of the part other than the flange contact part, i.e. The rigidity of the exposed main body exposed portion and the cutting edge portion is stably increased.

In the above cutting blade, the bond reinforcing portion may be made of ceramics.

In this case, the Young's modulus of the bond reinforcing portion can be more stably increased than the Young's modulus of the bond phase.

In the above cutting blade, the bond reinforcing portion may be made of diamond.

In this case, the Young's modulus of the bond reinforcement portion can be more stably increased than the Young's modulus of the bond phase.

In the above cutting blade, the bond phase may be a plated phase, and the bond reinforcing portion may be made of a non-conductive material.

In this case, since the bond phase that holds the bond reinforcing portion is made of the plating phase, deformation due to heat shrinkage during blade manufacturing is less likely than in the case of a resin bond phase that requires hot pressing during blade manufacturing, for example. It is suppressed and easy to manufacture cutting blades.
In addition, since the bond reinforcing portion is non-conductive, adhesion of plating to the bond reinforcing portion is suppressed when the bond phase is produced by electroplating. Therefore, it is possible to appropriately reduce the lapping process and the like performed after the plating process.

In the above cutting blade, the bond reinforcing portion may be made of cemented carbide.

In this case, the Young's modulus of the bond reinforcing portion can be more stably increased than the Young's modulus of the bond phase.

In the cutting blade, the bond phase may be any one of a resin bond phase, a metal bond phase, and a vitrified bond phase.

In this case, the cutting blade of the present invention can be suitably used according to various demands for the cutting blade.

According to another aspect of the present invention, there is provided a method for manufacturing the above-described cutting blade, comprising: a step of positioning and fixing the bond reinforcing portion to the base metal; and plating the bond reinforcing portion and the base metal. and a plating step of immersing in a bath to deposit the bond phase on the base metal.

In this case, the cutting blade of the present invention, in which the bond phase is the plated phase, that is, the electroformed blade can be stably manufactured.

According to another aspect of the present invention, there is provided a method of manufacturing the cutting blade described above, comprising: a bond reinforcing portion positioning step of positioning and fixing the bond reinforcing portion to a base metal; 1 a preliminary plating step of immersing in a plating bath to deposit a preliminary plating phase of a material different from that of the bond phase on the base metal; a plating step of immersing in a second plating bath different from the bath to deposit the bond phase on the preliminary plating phase; and a preliminary step of removing the preliminary plating phase from the laminate of the bond phase and the preliminary plating phase. and a plating removal step.

In this case, the cutting blade of the present invention, in which the bond phase is the plated phase, that is, the electroformed blade can be stably manufactured. In addition, since only the pre-plating phase can be removed from the laminate of the bond phase and the pre-plating phase by, for example, dissolution or the like, compared to the case where the pre-plating phase is removed by, for example, lapping or the like, the cutting produced can be reduced. It is easier to suppress the influence of external load, heat load, etc. on the blade.

According to another aspect of the present invention, there is provided a method for manufacturing the above-described cutting blade, comprising: a step of positioning and fixing the bond reinforcing portion to the base metal; and plating the bond reinforcing portion and the base metal. A blade body plating step of immersing in a bath and depositing the blade body on the base metal, and rotating the blade body and the bond reinforcement separated from the base metal in the plating bath, and a cutting edge portion plating step of depositing the cutting edge portion projecting radially outward from the outer peripheral portion and extending in the circumferential direction on the outer peripheral portion of the blade main body portion.

In this case, the cutting blade of the present invention, in which the bond phase is the plated phase, that is, the electroformed blade can be stably manufactured. In addition, it is possible to use different types of plating baths for the bond phase blade body and the cutting edge. For example, the material of the plating, the size of the abrasive grains contained, the type of filler, etc. can be appropriately set for the blade main body and the cutting edge, respectively, and various functions can be added to the cutting blade.

According to another aspect of the present invention, there is provided a method of manufacturing the cutting blade described above, comprising: a step of positioning and fixing the bond reinforcing portion in a mold; A compression molding step of filling a mixed powder containing a raw material powder and performing compression molding to form a disk-shaped blade compact, and a sintering step of sintering the blade compact.

In this case, it is possible to stably manufacture cutting blades of the present invention having bond phases of various materials other than the plating phase. Specifically, by this manufacturing method, for example, a resin blade whose bond phase is a resin bond phase, a metal blade whose bond phase is a metal bond phase, and a vitrified blade whose bond phase is a vitrified bond phase are preferably produced. can be manufactured.

ADVANTAGE OF THE INVENTION According to the cutting blade of one aspect of this invention, and its manufacturing method, blade rigidity can be improved, maintaining the sharpness of a cutting edge part favorably.

FIG. 1 is a plan view showing the cutting blade of the first embodiment. FIG. FIG. 2 is a cross-sectional view showing the cutting blade of the first embodiment. FIG. 3 is a flow chart for explaining the method for manufacturing the cutting blade of the first embodiment. FIG. 4 is a perspective view for explaining a part of the method for manufacturing the cutting blade of the first embodiment (bond reinforcing portion producing step). FIG. 5 is a plan view showing the bond reinforcing portion of the first embodiment. FIG. 6 is a cross-sectional view explaining a part of the manufacturing method of the cutting blade of the first embodiment (bond reinforcing portion positioning step). FIG. 7 is a plan view explaining a part of the manufacturing method of the cutting blade of the first embodiment (bond reinforcing portion positioning step). FIG. 8 is a cross-sectional view explaining a part (plating step) of the method for manufacturing the cutting blade of the first embodiment. FIG. 9 is a plan view explaining a part (plating step) of the method for manufacturing the cutting blade of the first embodiment. FIG. 10 is a flow chart illustrating a method for manufacturing a cutting blade according to the second embodiment. FIG. 11 is a partial cross-sectional view explaining a part (plating step) of the method of manufacturing the cutting blade of the second embodiment. FIG. 12 is a cross-sectional view explaining a part (plating step) of the method of manufacturing the cutting blade of the third embodiment. 13 is a sectional view showing an enlarged part of FIG. 12. FIG. FIG. 14 is a plan view showing the cutting blade of the fourth embodiment. FIG. 15 is a cross-sectional view explaining a part of the manufacturing method of the cutting blade of the fourth embodiment (bond reinforcing portion positioning step). FIG. 16 is a plan view illustrating a part of the manufacturing method of the cutting blade of the fourth embodiment (bond reinforcing portion positioning step). FIG. 17 is a cross-sectional view explaining a part (plating step) of the method for manufacturing the cutting blade of the fourth embodiment. 18 is a sectional view showing an enlarged part of FIG. 17. FIG. FIG. 19 is a plan view showing the cutting blade of the fifth embodiment. FIG. 20 is a plan view for explaining a part of the manufacturing method of the cutting blade of the fifth embodiment (bond reinforcing portion positioning step). FIG. 21 is a plan view illustrating a part of the manufacturing method of the cutting blade of the sixth embodiment (bond reinforcing portion positioning step). FIG. 22 is a plan view showing the cutting blade of the seventh embodiment. FIG. 23 is a flow chart illustrating a method for manufacturing a cutting blade according to the seventh embodiment. FIG. 24 is a cross-sectional view illustrating a part (cutting edge portion plating step) of the method for manufacturing the cutting blade of the seventh embodiment. FIG. 25 is a flow chart illustrating a method for manufacturing a cutting blade according to the eighth embodiment.

<First Embodiment>
A cutting blade 10 according to a first embodiment of the present invention and a method of manufacturing the same will be described with reference to FIGS. 1 to 9 and 11. FIG. In addition, in the drawings of each embodiment, the thickness dimension of the cutting blade may be shown to be thicker than it actually is, in order to explain the features of the cutting blade in an easy-to-understand manner.

The cutting blade 10 of the present embodiment is used in technical fields that require singulation such as cutting green sheets (so-called raw ceramics) before sintering such as MLCCs (multilayer ceramic capacitors). It is suitable for use in the field of electronic material manufacturing, where cutting speed is high, and in the technical field where straightness is likely to be hindered.

As shown in FIGS. 1 and 2, the cutting blade 10 has a disc shape centered on the central axis O, and includes a bond phase 1 having a cutting edge portion 11 arranged on the outer peripheral portion, and a plurality of abrasive grains 2. (see FIG. 11) and a plurality of bond reinforcements 3 . Moreover, although not shown, the cutting blade 10 may include a plurality of fillers. The filler is appropriately used for the purpose of increasing the rigidity of the blade, improving the slidability with respect to the material to be cut, and the like.

In this embodiment, the direction in which the central axis O of the bond phase 1 extends is called the axial direction (blade axial direction). The axial direction corresponds to the thickness direction of the cutting blade 10 . Therefore, the axial direction may be rephrased as the thickness direction.
A direction perpendicular to the central axis O is called a radial direction (blade radial direction). Of the radial directions, the direction closer to the central axis O is called the radial inner side, and the direction away from the central axis O is called the radial outer side.
The direction of rotation around the central axis O is called the circumferential direction (blade circumferential direction).

The cutting blade 10 of the present embodiment has a disk shape, specifically an annular plate shape. That is, the "disc shape" in the present embodiment includes an annular disc shape having a hole in the center of the disc. This cutting blade 10 is a so-called washer-type cutting blade.
The axial dimension, that is, the thickness dimension of the cutting blade 10 is, for example, 50 μm or more and 250 μm or less. The outer diameter dimension of the cutting blade 10 is, for example, 52 mm or more and 75 mm or less. The inner diameter of the cutting blade 10 is, for example, 40 mm.

The cutting blade 10 is detachably attached to the main shaft of a cutting device (dicer) (not shown) using an annular plate-shaped flange F. As shown in FIG. The cutting blade 10 is rotated in the circumferential direction about the central axis O by the main shaft of the cutting device, is moved in the radial direction with respect to a material to be cut such as an MLCC green sheet (not shown), and is cut from the flange F. The cutting edge portion 11 protruding radially outward cuts the material to be cut.
Note that "cutting" as used in the present embodiment includes not only the process of dividing the material to be cut, but also the processing of grooving the material to be cut, and the like.

The bond phase 1 of this embodiment is a plating phase. That is, the bond phase 1 is a metallic bonding phase. The bond phase 1 is made of metal containing Ni or the like as a main component, for example.

The bond phase 1 has a cutting edge portion 11 , a blade body portion 12 and a mounting hole 13 .
The cutting edge portion 11 constitutes the outer peripheral portion of the bond phase 1 . The cutting edge portion 11 has a circular ring shape centering on the central axis O. As shown in FIG. The cutting edge portion 11 includes the outer peripheral edge portions of the pair of plate surfaces 1a, 1a facing the axial direction of the bond phase 1, the outer peripheral surface 1b facing the radially outer side of the bond phase 1, and the outer peripheral edge portions and the outer peripheral surface. 1b and a pair of ridges or edges that connect with 1b. For example, the radial dimension of the cutting edge portion 11 is, for example, 1 mm or more and 3 mm or less.

The blade main body portion 12 is a portion of the bond phase 1 located radially inward of the cutting edge portion 11 . The blade main body 12 has an annular plate shape centered on the central axis O. As shown in FIG. In this embodiment, the blade main body portion 12 is arranged on the entire portion of the bond phase 1 other than the cutting edge portion 11 . Further, in this embodiment, the blade main body portion 12 and the cutting edge portion 11 are integrally formed of the same material and composition.

The blade body portion 12 has a flange contact portion 14 and a body exposed portion 15 .
The flange contact portion 14 is in the shape of an annular plate centered on the central axis O. As shown in FIG. The flange contact portion 14 is arranged in a portion of the blade main body portion 12 other than the outer peripheral portion. The flange contact portion 14 is a portion of the bond phase 1 that is axially pressed by the flange F of the main shaft of the cutting device and held by the flange. That is, the flange F contacts the flange contact portion 14 . The flange contact portion 14 is arranged radially inward of a boundary B between the blade body portion 12 and the cutting edge portion 11 .

The main body exposed portion 15 is in the shape of an annular plate centered on the central axis O. As shown in FIG. The main body exposed portion 15 is arranged on the outer peripheral portion of the blade main body portion 12 . The main body exposed portion 15 is positioned radially outward of the flange F. As shown in FIG. That is, the body exposed portion 15 is a portion of the bond phase 1 that is exposed to the outside without being pressed by the flange F. The body exposed portion 15 is located between the boundary B and the flange contact portion 14 in the radial direction.

Mounting hole 13 is positioned on central axis O of bond phase 1 . The mounting hole 13 has a circular shape centered on the central axis O. As shown in FIG. The mounting hole 13 axially penetrates the bond phase 1 . The mounting holes 13 are opened in a pair of plate surfaces 1 a , 1 a facing the axial direction of the bond phase 1 .

The abrasive grains 2 are, for example, diamond abrasive grains, cBN abrasive grains, or the like. A plurality of abrasive grains 2 are dispersed in at least the cutting edge portion 11 of the bond phase 1 (see FIG. 11). Although not shown, in this embodiment, a plurality of abrasive grains 2 are dispersed throughout the bond phase 1 . The average grain size of the abrasive grains 2 is, for example, 8 μm or more and 50 μm or less.

The "average particle diameter" referred to in the present embodiment is the volume average diameter measured using a laser diffraction/scattering measuring device. The volume average diameter is the average diameter weighted based on the volume distribution of the whole including small grains to large grains among the abrasive grains 2 which are the objects to be measured. As the laser diffraction/scattering type measuring device, for example, model MT3300EXII-SDC manufactured by Microtrac can be used.

As shown in FIGS. 1 and 2, the bond reinforcement 3 is placed on and held by the bond phase 1 . The bond reinforcing portion 3 is made of a material having a Young's modulus higher than that of the bond phase 1 . In this embodiment, the bond reinforcing portion 3 is made of a non-conductive material. The bond reinforcing portion 3 is made of, for example, zirconia. That is, the bond reinforcing portion 3 of this embodiment is made of ceramics. A plurality of bond reinforcements 3 are arranged in the blade body portion 12 of the bond phase 1 . The bond reinforcing portion 3 is not arranged on the cutting edge portion 11 .

The bond reinforcing portion 3 extends in one direction, that is, in a predetermined direction when viewed from the axial direction as shown in FIG. The bond reinforcing portion 3 is rod-shaped and extends in one direction when viewed from the axial direction. Specifically, the bond reinforcing portion 3 is in the shape of a square bar with a square cross section and extends linearly. The radial position of one end of the two ends of the bond reinforcing portion 3 differs from the radial position of the other end.

In this embodiment, each bond reinforcing portion 3 extends radially. The plurality of bond reinforcing portions 3 are arranged at intervals in the circumferential direction. In the illustrated example, eight bond reinforcing portions 3 are arranged at equal pitches in the circumferential direction. The plurality of bond reinforcing portions 3 are arranged at rotationally symmetrical positions with respect to the central axis O. As shown in FIG. In the illustrated example, a plurality of bond reinforcing portions 3 are arranged radially around the central axis O. As shown in FIG.

The bond reinforcement portion 3 is arranged across the flange contact portion 14 and the body exposed portion 15 in the blade body portion 12 . In this embodiment, the radially inner end of the bond reinforcing portion 3 is positioned on the inner peripheral portion of the flange contact portion 14 . Further, the radially outer end portion of the bond reinforcing portion 3 is located on the outer peripheral portion of the main body exposed portion 15 . The bond reinforcing portion 3 has a portion that overlaps the flange F and a portion that is arranged radially outside the flange F (that is, does not overlap the flange F) when viewed in the axial direction. That is, the bond reinforcing portion 3 has a portion that is pressed by the flange F and a portion that is not pressed by the flange F and protrudes radially outward from the flange F. As shown in FIG.

As shown in FIGS. 1 and 2, the bond reinforcing portion 3 is exposed on the plate surface 1a facing the axial direction of the bond phase 1. As shown in FIGS. Specifically, the bond reinforcing portion 3 has an axially facing end surface 3 a of the outer surface of the bond reinforcing portion 3 exposed to the plate surface 1 a of the bond phase 1 . In this embodiment, the axial position of the end surface 3a of the bond reinforcing portion 3 and the axial position of the plate surface 1a of the bond phase 1 are the same. That is, the end surface 3a and the plate surface 1a are arranged so as to be flush with each other.

In the example shown in FIG. 2 , a pair of axial end faces 3 a , 3 a of the bond reinforcing portion 3 are exposed to a pair of plate faces 1 a , 1 a of the bond phase 1 . That is, the bond reinforcing portion 3 is exposed on the pair of plate surfaces 1a, 1a of the bond phase 1, respectively. Therefore, the axial dimension of the bond reinforcing portion 3 is substantially equal to the axial dimension of the bond phase 1 .

As shown in FIG. 5 , the bond reinforcing portion 3 has a concave portion 3 c recessed from the outer surface of the bond reinforcing portion 3 . The concave portion 3c is recessed from the side surface 3b of the outer surface of the bond reinforcing portion 3 facing the blade circumferential direction (corresponding to the width direction of the bond reinforcing portion 3). In this embodiment, the recessed portion 3c is arranged on the side surface 3b of the bond reinforcing portion 3 over the entire length in the axial direction (thickness direction) and opens to the pair of end surfaces 3a, 3a. That is, the concave portion 3c has a groove shape that penetrates the bond reinforcing portion 3 in the axial direction.

A plurality of concave portions 3 c are provided in the bond reinforcing portion 3 . The concave portions 3c are arranged on a pair of side surfaces 3b, 3b of the bond reinforcing portion 3 facing in the blade circumferential direction. The plurality of concave portions 3c are arranged at intervals in one direction in which the bond reinforcing portion 3 extends (in the present embodiment, the radial direction of the blade). When the bond reinforcing portion 3 is held by the bond phase 1 during blade manufacture, a portion of the bond phase 1 enters each recess 3c. That is, part of the bond phase 1 is arranged in the recess 3c.

Although not particularly shown, the bond reinforcing portion 3 preferably has a rough surface portion having a surface roughness of a predetermined value or more on the outer surface of the bond reinforcing portion 3 . The rough surface portion is formed, for example, by subjecting the outer surface of the bond reinforcing portion 3 to blasting. The surface roughness of the rough surface portion is, for example, an arithmetic mean roughness Ra of 0.2 μm or more and 20 μm or less. The rough surface portion is arranged at least on a portion of the outer surface of the bond reinforcing portion 3 that contacts the bond phase 1, and is arranged at least on the side surface 3b in this embodiment. The rough surface portion may also be arranged in the concave portion 3c.

Next, a method for manufacturing the cutting blade 10 of this embodiment will be described.
As shown in FIG. 3, the method for manufacturing the cutting blade 10 of the present embodiment includes a bond reinforcing portion preparation step S11, a bond reinforcing portion positioning step S12, a plating step S13, an excess plating removal step S14, an inner diameter outer and a diameter machining step S15.

In the bond reinforcing portion producing step S11, the bond reinforcing portion 3 is produced. In this embodiment, as shown in FIG. 4, the bond reinforcing portion 3 shown in FIG. 5 is formed by cutting the plate-shaped reinforcing portion material RM into thin plates by, for example, electrical discharge machining or laser processing. A plurality of grooves G, which are used as recesses 3c when the bond reinforcing portion 3 is cut out, are formed in advance in the reinforcing portion material RM.

In the bond reinforcing portion positioning step S<b>12 , the bond reinforcing portion 3 is positioned and fixed to the base metal 100 . Specifically, as shown in FIGS. 6 and 7, a plurality of bond reinforcements 3 are positioned and fixed with respect to the base metal 100 so that the bond reinforcements 3 are arranged as described above. In this embodiment, the bond reinforcing part 3 is fixed on the base metal 100 with the adhesive 101 . Specifically, the end surface 3a of the bond reinforcing portion 3 and the upper surface of the base metal 100 are partially adhered with the adhesive 101 at a plurality of locations. The end surface 3a of the bond reinforcing portion 3 and the upper surface of the base metal 100 are arranged to face each other with a gap therebetween by interposing the adhesive 101 scattered therebetween.

In the plating step S13, the bond reinforcing portion 3 and the base metal 100 are immersed in a plating bath, and the bond phase 1 is deposited on at least the base metal 100 out of the bond reinforcing portion 3 and the base metal 100 . In the present embodiment, the bond reinforcing portion 3 is made of ceramics and is made of a non-conductive material. Therefore, as shown in FIGS. 8 and 9, the bond phase 1 is deposited on the base metal 100 by electrolytic plating.

Although not shown, the plating bath contains a metal component such as Ni, which is a raw material of the bond phase 1, abrasive grains 2, and various fillers as necessary. In a plating bath, while incorporating the abrasive grains 2 (and filler), the bond phase 1 is deposited on the upper surface of the base metal 100 so as to have a predetermined thickness, and then the bond phase 1 is peeled off from the base metal 100. do.

In the surplus plating removing step S14, the surplus plating portion P1 is removed from the bond phase 1, as shown in FIG. Specifically, the surplus plated portion P1 is formed between the upper surface of the base metal 100 and the end surface 3a of the bond reinforcing portion 3 according to the axial dimension (thickness dimension) of the adhesive 101, for example. This is a surplus plating layer. Excess plated portion P1 is removed from bond phase 1 by polishing, for example, by lapping.

One of the pair of end surfaces 3a, 3a of the bond reinforcing portion 3 is exposed to one of the pair of plate surfaces 1a, 1a of the bond phase 1, and the other of the pair of end surfaces 3a, 3a of the bond reinforcing portion 3 is exposed. may be configured not to be exposed to the other of the pair of plate surfaces 1a, 1a of the bond phase 1. In this case, the excess plating removal step S14 may not be provided.

In the inner diameter and outer diameter processing step S15, the bond phase 1 is subjected to inner diameter processing and outer diameter processing.
A cutting blade 10 having a predetermined axial dimension (thickness dimension), a predetermined inner diameter dimension, and a predetermined outer diameter dimension is manufactured through the above steps.

According to the cutting blade 10 of the present embodiment and the manufacturing method thereof described above, the bond reinforcing portion 3 having a higher Young's modulus than the bond phase 1 is arranged in the blade main body portion 12 of the bond phase 1 . As a result, the rigidity of the blade body 12 is increased, and the blade rigidity of the cutting blade 10 as a whole is also improved. In the present embodiment, the strength of the bond phase 1 is increased by the bond reinforcing portion 3 instead of increasing the hardness of the material itself constituting the bond phase 1, so the abrasive grains 2 of the cutting edge portion 11 are preferably self-generated. The action, that is, the self-sharpening action can be maintained satisfactorily.

Therefore, according to the present embodiment, sharpness of the cutting edge portion 11 can be maintained satisfactorily while increasing blade rigidity, and straightness during cutting is stably ensured. As a result, the cutting accuracy is stably enhanced. For example, compared to the case of using an expensive cemented carbide or the like as the material of the bond phase 1 in order to increase the rigidity of the bond phase 1, according to the present embodiment, the cutting blade 10 can be manufactured at low cost. can.
When the cutting blade 10 of the present embodiment was used for cutting a material to be cut, it was confirmed that straightness was maintained satisfactorily even in high-speed cutting at a feed rate of 400 mm/sec.

In addition, in the present embodiment, the bond reinforcing portion 3 extends in one direction when viewed from the axial direction, and the radial position of one of both ends of the bond reinforcing portion 3 and the radial position of the other end of the bond reinforcing portion 3 are aligned with each other. different.
In this case, the strength at each position in the radial direction of the bond phase 1 is easily equalized, and the rigidity at each position in the radial direction of the bond phase 1 is stably increased. The strength along the radial direction of the bond phase 1 is increased, and the straightness during cutting is more stable.

Further, in this embodiment, the plurality of bond reinforcing portions 3 are arranged at positions that are rotationally symmetrical with respect to the central axis O. As shown in FIG. That is, a plurality of bond reinforcing portions 3 are arranged at equal pitches in the circumferential direction.
In this case, the rigidity of the bond phase 1 in the circumferential direction is made uniform, and straightness during cutting is more stably ensured.

Further, in this embodiment, the bond reinforcing portion 3 is exposed on the plate surface 1a facing the axial direction of the bond phase 1 .
For example, compared to the case where the bond reinforcing portion 3 is not exposed from the plate surface 1a facing the axial direction of the bond phase 1, according to the above configuration of the present embodiment, The ratio of the axial dimension of the bond reinforcing portion 3 can be increased. That is, a large axial dimension of the bond reinforcing portion 3 can be ensured. Therefore, the blade rigidity is stably increased.
In the present embodiment, the bond reinforcing portion 3 is exposed on the pair of plate surfaces 1a, 1a facing the axial direction of the bond phase 1, respectively, so that the above effects become more remarkable.

Further, in this embodiment, the bond reinforcing portion 3 has a concave portion 3c that is recessed from the outer surface of the bond reinforcing portion 3 .
In this case, part of the bond phase 1 enters the concave portion 3 c of the bond reinforcing portion 3 during the manufacturing of the cutting blade 10 . That is, part of the bond phase 1 is arranged in the concave portion 3c. As a result, an anchor effect is obtained, and the holding force of the bond reinforcing portion 3 is enhanced. The bond reinforcing portion 3 is firmly integrated with the bond phase 1 and can be prevented from coming off from the bond phase 1 .

Further, in this embodiment, the bond reinforcing portion 3 may have a rough surface portion having a surface roughness of a predetermined value or more on the outer surface of the bond reinforcing portion 3. In this case, the following effects can be obtained.
That is, in this case, when the cutting blade 10 is manufactured, the bond phase 1 adheres to the rough surface portion of the bond reinforcing portion 3 , thereby ensuring a large contact area between the bond reinforcing portion 3 and the bond phase 1 . This enhances the holding power of the bond reinforcing portion 3 with respect to the bond phase 1 . The bond reinforcing portion 3 is firmly integrated with the bond phase 1 and can be prevented from coming off from the bond phase 1 .

Further, in the present embodiment, the bond reinforcing portion 3 is rod-shaped and extends in one direction when viewed from the axial direction.
In this case, when manufacturing the cutting blade 10, it is easy to dispose the bond reinforcing portion 3 on the blade main body portion 12 and to handle it easily. Further, the function (action) of each bond reinforcing portion 3 is less likely to vary. Therefore, the effects of the present embodiment are more likely to be stabilized.

Further, in this embodiment, the bond reinforcing portion 3 is arranged across the flange contact portion 14 and the main body exposed portion 15 of the blade main body portion 12 .
By arranging the bond reinforcing portion 3 from the flange contact portion 14 to the main body exposed portion 15 on the radially outer side thereof, the rigidity of the portion other than the flange contact portion 14 of the bond phase 1, that is, the flange F during the cutting process. The rigidity of the main body exposed portion 15 and the cutting edge portion 11, which are exposed to the outside without being pressed, is stably increased.

Further, in this embodiment, the bond reinforcing portion 3 is made of ceramics.
In this case, the Young's modulus of the bond reinforcing portion 3 can be stably increased more than the Young's modulus of the bond phase 1 .

Further, in this embodiment, the bond phase 1 is a plated phase, and the bond reinforcing portion 3 is made of a non-conductive material.
In this case, since the bond phase 1 that holds the bond reinforcing portion 3 is made of the plating phase, deformation due to heat shrinkage during blade manufacture is less than in the case of a resin bond phase that requires hot pressing during blade manufacture, for example. etc. can be suppressed, and the cutting blade 10 can be easily manufactured.
In addition, since the bond reinforcing portion 3 is non-conductive, adhesion of plating to the bond reinforcing portion 3 is suppressed when the bond phase 1 is produced by electroplating. Therefore, it is possible to appropriately reduce the lapping process and the like performed after the plating process.

In addition, according to the method for manufacturing the cutting blade 10 of the present embodiment, the cutting blade 10 of the present invention in which the bond phase 1 is the plating phase, that is, the electroformed blade can be stably manufactured.

<Second embodiment>
Next, a cutting blade 10 according to a second embodiment of the present invention and a method for manufacturing the same will be described with reference to FIGS. 10 and 11. FIG. Note that in this embodiment, the same configurations as those in the above-described embodiment may be given the same names and symbols, and the description thereof may be omitted. Further, in the present embodiment, the same process names as those of the manufacturing method described in the above-described embodiments may be given the same process names, and the description thereof may be omitted.

The configuration of the cutting blade 10 of this embodiment is the same as the configuration of the cutting blade 10 described in the previous embodiment. In this embodiment, the method for manufacturing the cutting blade 10 is different from the method for manufacturing the cutting blade 10 described in the above-described embodiment.

As shown in FIG. 10, the method for manufacturing the cutting blade 10 of the present embodiment includes a bond reinforcing portion preparation step S21, a bond reinforcing portion positioning step S22, a preliminary plating step S23, a plating step S24, and preliminary plating removal. A step S25 and an inner/outer diameter machining step S26 are provided.
The bond-reinforcing portion producing step S21, the bond-reinforcing portion positioning step S22, and the inner/outer diameter processing step S26 are the same as those in the above-described embodiment, and thus description thereof is omitted.

As shown in FIG. 11, in the preliminary plating step S23, the bond reinforcing portion 3 and the base metal 100 are immersed in a first plating bath, and a preliminary plating phase 102 of a material different from that of the bond phase 1 is deposited on the base metal 100. Let In this embodiment, as the preliminary plating phase 102, for example, Cu, which is a metal material different from Ni of the bond phase 1, is used.

Although not shown, the first plating bath contains a metal component such as Cu, which is the raw material of the preliminary plating phase 102 . In the first plating bath, a pre-plating phase 102 is deposited on the upper surface of the base metal 100 so as to have a predetermined thickness. This predetermined thickness dimension is, for example, the same as the axial dimension (thickness dimension) of the adhesive 101 .

In the plating step S24, the bond reinforcing portion 3, the base metal 100 and the preliminary plating phase 102 are immersed in a second plating bath different from the first plating bath to deposit the bond phase 1 on the preliminary plating phase 102.

Although not shown, the second plating bath contains a metal component such as Ni, which is a raw material of the bond phase 1, abrasive grains 2, and various fillers as necessary. In the second plating bath, while incorporating the abrasive grains 2 (and filler), the bond phase 1 is deposited on the upper surface of the pre-plating phase 102 so as to have a predetermined thickness, and then the bond phase 1 and the pre-plating are carried out. The stack of phases 102 is peeled off from the base metal 100 .

In the preliminary plating removal step S25, the preliminary plating phase 102 is removed from the laminate of the bond phase 1 and the preliminary plating phase 102. As shown in FIG. Specifically, for example, only the preliminary plating phase 102 is removed from the laminate by dissolution or the like.

According to the method for manufacturing the cutting blade 10 of the present embodiment described above, the cutting blade 10 of the present invention in which the bond phase 1 is the plating phase, that is, the electroformed blade can be stably manufactured. In addition, since only the preliminary plating phase 102 can be removed from the laminate of the bond phase 1 and the preliminary plating phase 102 by, for example, dissolution or the like, compared to the case of removing the preliminary plating phase 102 by, for example, lapping or the like, It is easier to suppress the influence of external load, heat load, etc. on the manufactured cutting blade 10 .
However, the pre-plating phase 102 is not limited to this, and may be removed from the laminate by lapping or the like.

<Third Embodiment>
Next, a cutting blade 30 according to a third embodiment of the present invention and a method for manufacturing the same will be described with reference to FIGS. 12 and 13. FIG. Note that in this embodiment, the same configurations as those in the above-described embodiment may be given the same names and symbols, and the description thereof may be omitted. Further, in the present embodiment, the same process names as those of the manufacturing method described in the above-described embodiments may be given the same process names, and the description thereof may be omitted.

In the cutting blade 30 of this embodiment, the material of the bond reinforcing portion 33 is different from the material of the bond reinforcing portion 3 described in the above-described embodiment. In this embodiment, the bond reinforcing portion 33 is made of a conductive material. Specifically, the bond reinforcing portion 33 is made of cemented carbide.

Further, the method for manufacturing the cutting blade 30 of the present embodiment includes a bond reinforcing portion forming step S11, a bond reinforcing portion positioning step S12, a plating step S13, and an excess plating removing step, as in the first embodiment described above. S14 and inner/outer diameter machining step S15 (see FIG. 3).

In the present embodiment, since the bond reinforcement portion 33 has conductivity, as shown in FIGS. A bond phase 1 (plating phase) is deposited.

Therefore, in the surplus plating removal step S14, the surplus plating portions P1 and P2 are removed from both sides of the bond phase 1 in the axial direction by lapping or the like. That is, according to the axial dimension of the adhesive 101, the surplus plated portion P1 formed between the upper surface of the base metal 100 and one end surface (lower surface) 3a of the bond reinforcement portion 33, and the bond reinforcement portion 33 The surplus plated portion P2 formed on the other end surface (upper surface) 3a is removed by lapping or the like.

According to the cutting blade 30 of this embodiment and the method of manufacturing the same described above, the same effects as those of the above-described embodiment can be obtained.

Further, in this embodiment, the bond reinforcing portion 33 is made of cemented carbide.
In this case, the Young's modulus of the bond reinforcing portion 33 can be stably increased more than the Young's modulus of the bond phase 1 .

<Fourth Embodiment>
Next, a cutting blade 40 according to a fourth embodiment of the present invention and a method for manufacturing the same will be described with reference to FIGS. 14 to 18. FIG. Note that in this embodiment, the same configurations as those in the above-described embodiment may be given the same names and symbols, and the description thereof may be omitted. Further, in the present embodiment, the same process names as those of the manufacturing method described in the above-described embodiments may be given the same process names, and the description thereof may be omitted.

The cutting blade 40 of this embodiment differs from the previous embodiment in the configuration and material of the bond reinforcing portion 43 .
As shown in FIG. 14, in this embodiment, the bond reinforcing portion 43 extends in one direction when viewed from the axial direction. The bond reinforcing portion 43 has a plurality of granules 44 arranged in one direction. That is, the bond reinforcing portion 43 is formed so as to extend in one direction as a whole by arranging the plurality of granular bodies 44 in one direction. In this embodiment, the plurality of grains 44 of the bond reinforcing portion 43 are arranged along the radial direction. Also, the plurality of granular bodies 44 are arranged at intervals. The bond reinforcing portion 43 is arranged over the flange contact portion 14 and the main body exposed portion 15 .

Granules 44 are made of a non-conductive material. Specifically, the granules 44 are diamond abrasive grains, that is, made of diamond. As shown in FIG. 18 , the grains 44 have a larger average grain size than the abrasive grains 2 . The average particle size of the granular material 44 is, for example, 40 μm or more and 150 μm or less. The average particle diameter of the granular material 44 is, for example, equal to or less than the axial dimension of the cutting blade 40 (bond phase 1). Also, the average particle size of the granular material 44 is, for example, 1/2 or more of the axial dimension of the cutting blade 40 .

Further, the method for manufacturing the cutting blade 40 of the present embodiment includes a bond reinforcing portion positioning step S12, a plating step S13, an excess plating removal step S14, and an inner/outer diameter processing step S15 (see FIG. 3). ).

In the present embodiment, the bond reinforcing portion 43 is formed by arranging a plurality of granular bodies 44. Therefore, in the bond reinforcing portion positioning step S12, as shown in FIGS. , are fixed on the base metal 100 with an adhesive 101 respectively.

In the plating step S13, the bond reinforcing portion 43 and the base metal 100 are immersed in a plating bath to deposit the bond phase 1 on the base metal 100 as shown in FIGS. In the present embodiment, the bond reinforcing portion 43 is made of diamond and is made of a non-conductive material, so that the bond phase 1 is deposited only on the base metal 100 by electroplating.

Although not shown, the plating bath contains a metal component such as Ni, which is a raw material of the bond phase 1, abrasive grains 2, and various fillers as necessary. In a plating bath, while incorporating the abrasive grains 2 (and filler), the bond phase 1 is deposited on the upper surface of the base metal 100 so as to have a predetermined thickness, and then the bond phase 1 is peeled off from the base metal 100. do.

In the surplus plating removing step S14, the surplus plating portion P1 is removed from the bond phase 1, as shown in FIG. Specifically, the surplus plated portion P1 includes the upper surface of the base metal 100, the lower surface of the bond reinforcing portion 43, that is, the lower surface of each particle 44, depending on the axial dimension (thickness dimension) of the adhesive 101. This is an extra plating layer formed between Excess plated portion P1 is removed from bond phase 1 by polishing, for example, by lapping.

According to the cutting blade 40 of this embodiment and the method of manufacturing the same described above, the same effects as those of the above-described embodiment can be obtained.

Further, in this embodiment, the bond reinforcing portion 43 has a plurality of granular bodies 44 arranged in one direction.
Thus, the bond reinforcing portion 43 can be provided in the blade main body portion 12 also by the plurality of granular bodies 44 arranged in one direction. Moreover, in this case, the flexibility of the shape of the bond reinforcing portion 43 is enhanced.

Further, in this embodiment, the bond reinforcing portion 43 is made of diamond.
In this case, the Young's modulus of the bond reinforcing portion 43 can be more stably increased than the Young's modulus of the bond phase 1 .

Further, in this embodiment, the plurality of granular bodies 44 are arranged in one direction at intervals.
For example, when a plurality of granules 44 are arranged in close contact with each other in one direction, when these granules 44 are fixed on the base metal 100 with the adhesive 101 in the bond reinforcing portion positioning step S12, the plurality of The adhesive force between the entire granular body 44, that is, the bond reinforcing portion 43 and the base metal 100 becomes too strong, and the bond reinforcing portion 43 and the bond phase 1 may become difficult to separate from the base metal 100 after the plating step S13.
On the other hand, according to the above configuration of the present embodiment, the lower surfaces of the plurality of granular bodies 44 and the upper surface of the base metal 100 can be partially adhered to each other by the adhesive 101 at a plurality of locations. The portion 43 and the bond phase 1 are easily separated from the base metal 100 .

Further, in the present embodiment, the average particle size of the granular material 44 is 1/2 or more of the axial dimension of the cutting blade 40 . Further, the average particle size of the granular material 44 is equal to or smaller than the axial dimension of the cutting blade 40 .
When the average particle diameter of the granular material 44 is 1/2 or more of the axial dimension of the cutting blade 40, the effect of increasing the rigidity of the blade by the bond reinforcing portion 43 becomes more pronounced.
Further, when the average particle diameter of the granular material 44 is equal to or less than the axial dimension of the cutting blade 40, the flange contact portion 14, that is, the bond phase 1 can be stably pressed by the flange F, and the cutting state is stabilized.

<Fifth Embodiment>
Next, a cutting blade 50 according to a fifth embodiment of the present invention and a method for manufacturing the same will be described with reference to FIGS. 19 and 20. FIG. Note that in this embodiment, the same configurations as those in the above-described embodiment may be given the same names and symbols, and the description thereof may be omitted. Further, in the present embodiment, the same process names as those of the manufacturing method described in the above-described embodiments may be given the same process names, and the description thereof may be omitted.

As shown in FIG. 19, the cutting blade 50 of the present embodiment has a row of a plurality of granular bodies 44 arranged in one direction when viewed from the axial direction (hereinafter simply referred to as a row of granular bodies 44). ) has multiple columns. In the illustrated example, each bond reinforcement 53 has two rows of grains 44 . The rows of the two grains 44 of the bond reinforcing portion 53 are arranged side by side in the circumferential direction. However, the number of rows of the grains 44 included in each bond reinforcing portion 53 is not limited to this, and may be three or more.

Further, the method for manufacturing the cutting blade 50 of this embodiment includes a bond reinforcing portion positioning step S12, a plating step S13, an excess plating removal step S14, and an inner/outer diameter processing step, as in the above-described fourth embodiment. and S15 (see FIG. 3).
As shown in FIG. 20, in the bond reinforcing portion positioning step S12, each grain 44 of the bond reinforcing portion 53 is positioned and fixed on the base metal 100 with the adhesive 101, respectively.

According to the cutting blade 50 of this embodiment and the method of manufacturing the same described above, the same effects as those of the above-described embodiment can be obtained.

Further, in this embodiment, the bond reinforcing portion 53 has a plurality of rows of the granular bodies 44 .
In this case, the bond reinforcing portion 53 increases the rigidity of the blade more stably.

<Sixth Embodiment>
Next, a cutting blade 60 according to a sixth embodiment of the present invention and a method of manufacturing the same will be described with reference to FIG. Note that in this embodiment, the same configurations as those in the above-described embodiment may be given the same names and symbols, and the description thereof may be omitted. Further, in the present embodiment, the same process names as those of the manufacturing method described in the above-described embodiments may be given the same process names, and the description thereof may be omitted.

As shown in FIG. 21, in the cutting blade 60 of this embodiment, the bond reinforcing portion 63 has a plurality of granular bodies 44 arranged in one direction when viewed from the axial direction. The bond reinforcing portion 63 extends in the circumferential direction as it extends in the radial direction. In the illustrated example, the bond reinforcing portion 63 is located on one side in the circumferential direction (counterclockwise in FIG. 21) as it goes radially outward.

The method of manufacturing the cutting blade 60 is the same as in the fourth and fifth embodiments described above, except for the placement of the bond reinforcing portion 63 on the base metal 100 (bond reinforcing portion positioning step S12). Note that FIG. 21 shows the bond reinforcing portion positioning step S12 of this embodiment.

According to the cutting blade 60 of this embodiment and the method of manufacturing the same described above, the same effects as those of the above-described embodiment can be obtained.

Further, in the present embodiment, the bond reinforcing portion 63 extends in the circumferential direction as it extends in the radial direction.
In this case, the bond reinforcing portion 63 is arranged over a wide range in the radial direction and the circumferential direction in the blade body portion 12 . Therefore, the effect of increasing the rigidity of the blade by the bond reinforcing portion 63 is more stable.

Specifically, the strength at each position in the radial direction and at each position in the circumferential direction of the bond phase 1 is easily equalized. Therefore, the rigidity at each position in the radial direction and at each position in the circumferential direction of the bond phase 1 is stably increased. In addition, the strength along the radial direction and the strength along the circumferential direction of the bond phase 1 are enhanced, and the straightness during cutting becomes more stable.

<Seventh Embodiment>
Next, a cutting blade 70 according to a seventh embodiment of the present invention and a method for manufacturing the same will be described with reference to FIGS. 22 to 24. FIG. Note that in this embodiment, the same configurations as those in the above-described embodiment may be given the same names and symbols, and the description thereof may be omitted. Further, in the present embodiment, the same process names as those of the manufacturing method described in the above-described embodiments may be given the same process names, and the description thereof may be omitted.

The cutting blade 70 of this embodiment differs in the configuration of the bond phase 1 from the cutting blade 50 (FIG. 19) of the fifth embodiment described above.
As shown in FIG. 22, in the cutting blade 70 of the present embodiment, the blade main body 12 and the cutting edge 11 are made of different materials and compositions, or are made of the same material and composition, and are separately formed and integrated. It is

Specifically, as the cutting blade 70 of the present embodiment, for example, various configurations such as those described below can be adopted. That is, for example, the material of the plating phase used as the blade main-body part 12 and the material of the plating phase used as the cutting edge part 11 mutually differ. Further, for example, only the cutting edge portion 11 contains the abrasive grains 2 and the blade body portion 12 does not contain the abrasive grains 2 . Alternatively, the abrasive grains 2 contained in the cutting edge portion 11 and the abrasive grains contained in the blade body portion 12 (abrasive grains other than the grains 44) are different from each other. Also, for example, the filler contained in the cutting edge portion 11 and the filler contained in the blade body portion 12 are different from each other.
It is preferable that the blade main body portion 12 and the cutting edge portion 11 are provided with functions suitable for each by appropriately using the configuration as described above.

As shown in FIG. 23, the method for manufacturing the cutting blade 70 of the present embodiment includes a bond reinforcing portion positioning step S71, a blade main body portion plating step S72, a cutting edge portion plating step S73, and an inner/outer diameter processing step S74. And prepare.

In the bond reinforcing portion positioning step S71, the bond reinforcing portion 53, that is, the plurality of granular bodies 44, are positioned and fixed to the base metal 100 with the adhesive 101, as in the fifth embodiment described above.

In the blade body portion plating step S72, the bond reinforcing portion 53 and the base metal 100 are immersed in a plating bath, and the blade body portion 12 of the bond phase 1 is deposited on the base metal 100. As shown in FIG. Although not shown, the plating bath contains metal components such as Ni, which is the raw material of the blade main body 12, and abrasive grains 2 and various fillers, if necessary. In a plating bath, while incorporating abrasive grains 2 and various fillers, etc., the blade main body 12 is deposited on the upper surface of the base metal 100 so as to have a predetermined thickness dimension, and then the blade main body 12 is attached to the base metal 100. peel from.

In the cutting edge portion plating step S73, as shown in FIG. 24, the blade body portion 12 and the bond reinforcement portion 53 separated from the base metal 100 are rotated around the central axis O in the plating bath PB, and the blade body portion 12 A cutting edge portion 11 projecting radially outward from the outer peripheral portion and extending in the circumferential direction is deposited on the outer peripheral portion of the.

Specifically, in the present embodiment, a columnar support shaft 103 is fitted to each of the inner peripheral portions of the plurality of blade main body portions 12 having an annular plate shape. On both sides of the blade main body 12 in the axial direction, a non-conductive annular plate-like spacer S having substantially the same outer diameter as that of the blade main body 12 is provided. That is, the pair of spacers S sandwich the blade main body 12 from both sides in the axial direction. Then, while rotating the plurality of blade body portions 12 together with the support shaft 103 around the central axis O by the motor M, the cutting edges 11 are deposited on the radial outer end portions of the respective blade body portions 12 . At this time, the abrasive grains 2, various fillers, and the like are caused to settle in the plating bath PB from the upper side of each blade body portion 12. As shown in FIG. While incorporating these abrasive grains 2 and various fillers, an annular cutting edge portion 11 centered on the central axis O is deposited on the outer peripheral portion of each blade body portion 12 so as to have a predetermined radial dimension. Thereby, the bond phase 1 having the blade body portion 12 and the cutting edge portion 11 is produced.

In the inner diameter and outer diameter processing step S74, the bond phase 1 is subjected to inner diameter processing and outer diameter processing.
In the method for manufacturing the cutting blade 70 of the present embodiment, the excessive plating removal step described in the above embodiment is provided after the blade main body portion plating step S72 or the cutting edge portion plating step S73 as appropriate and necessary. Alternatively, a preliminary plating step and a preliminary plating removal step may be provided before and after the blade body portion plating step S72.

According to the cutting blade 70 of this embodiment and the method of manufacturing the same described above, the same effects as those of the above-described embodiment can be obtained.

Further, in the method for manufacturing the cutting blade 70 of the present embodiment, the cutting blade 70 of the present invention, in which the bond phase 1 is the plating phase, that is, the electroformed blade can be stably manufactured. Moreover, it is possible to use different types of plating baths for the blade body 12 and the cutting edge 11 of the bond phase 1 . For example, the material of the plating, the size of the abrasive grains 2 contained, the type of filler, etc. can be appropriately set for the blade body 12 and the cutting edge 11, respectively, and various functions can be added to the cutting blade 70. It is possible.

Specifically, in this embodiment, the blade main body portion 12 and the cutting edge portion 11 of the bond phase 1 are separately formed and integrally fixed. For this reason, for example, the functions required for the blade body 12 (blade rigidity, etc.) and the functions required for the cutting edge 11 (self-sharpening action, chip discharge, good maintenance of sharpness, etc.) can be flexibly adjusted. Easy to deal with.

<Eighth Embodiment>
Next, a cutting blade according to an eighth embodiment of the present invention and a method for manufacturing the same will be described with reference to FIG. Note that in this embodiment, the same configurations as those in the above-described embodiment may be given the same names and symbols, and the description thereof may be omitted. Further, in the present embodiment, the same process names as those of the manufacturing method described in the above-described embodiments may be given the same process names, and the description thereof may be omitted.

The cutting blade of this embodiment differs from the above-described embodiment in the material of the bond phase 1 . In this embodiment, the bond phase 1 is any one of a resin bond phase, a metal bond phase, and a vitrified bond phase. That is, when the bond phase 1 is a resin bond phase, the cutting blade is a resin blade. If the bond phase 1 is a metal bond phase, the cutting blade is a metal blade. If the bond phase 1 is a vitrified bond phase, the cutting blade is a vitrified blade.

As shown in FIG. 25, the method for manufacturing a cutting blade according to this embodiment includes a bond reinforcing portion positioning step S81, a compression molding step S82, a sintering step S83, and an inner/outer diameter processing step S84.

Although not particularly illustrated, in the bond reinforcing portion positioning step S81, the bond reinforcing portion is positioned and fixed within the mold. Specifically, for example, of the upper mold and the lower mold of the mold, a plurality of bond reinforcing parts are applied to the bottom surface of the lower mold with an adhesive or the like so as to be arranged in the same manner as in any of the above-described embodiments. Position and fix.

In the compression molding step S82, the mold is filled with mixed powder containing the raw material powder of the bond phase 1, and compression molding is performed to form a disk-shaped blade molding. In addition to the raw material powder of the bond phase 1, the mixed powder contains, for example, abrasive grains, various fillers, a binder, a solvent, and the like as appropriate according to the material of the bond phase 1. Further, the compression molding is, for example, molding by cold press.

In the sintering step S83, the blade compact is sintered. Specifically, the blade compact produced in the compression molding step S82 is placed in a hot press mold and hot pressed at a predetermined temperature and pressure to form the bond phase 1 .

In the inner diameter and outer diameter processing step S84, the bond phase 1 is subjected to inner diameter processing and outer diameter processing.
In addition, the bond phase 1 is appropriately subjected to lapping treatment, etching treatment, or the like as necessary.

According to the cutting blade of this embodiment and the method of manufacturing the same described above, the same effects as those of the above-described embodiment can be obtained.

Moreover, in this embodiment, the bond phase 1 is any one of a resin bond phase, a metal bond phase, and a vitrified bond phase.
In this case, the cutting blade of the present invention can be suitably used according to various demands for the cutting blade.

Further, in the method for manufacturing the cutting blade of the present embodiment, it is possible to stably manufacture the cutting blade of the present invention provided with the bond phase 1 of various materials other than the plating phase. Specifically, according to this manufacturing method, for example, a resin blade whose bond phase 1 is a resin bond phase, a metal blade whose bond phase 1 is a metal bond phase, a vitrified blade whose bond phase 1 is a vitrified bond phase, etc. can be suitably produced.

It should be noted that the present invention is not limited to the above-described embodiments, and, for example, as described below, changes in configuration can be made without departing from the gist of the present invention.

In the first to third embodiments described above, the bond reinforcing portions 3 and 33 are square bar-shaped with a rectangular cross section perpendicular to one direction. However, the present invention is not limited to this. The bond reinforcing portions 3 and 33 may have, for example, a rod-like shape such as a polygonal shape other than a quadrangle or a circular shape in a cross section perpendicular to one direction.

In the above-described fourth to seventh embodiments, an example in which the bond reinforcing portions 43, 53, 63 have diamond abrasive grains as the plurality of granular bodies 44 was given, but the present invention is not limited to this. The plurality of granules 44 may be, for example, cBN abrasive grains other than diamond abrasive grains. That is, in this case, the bond reinforcing portions 43, 53, 63 are made of cBN or the like.

Moreover, in each of the above-described embodiments, an example in which the bond reinforcing portion extends linearly was given, but the present invention is not limited to this. That is, the bond reinforcing portion may extend, for example, in a curved shape when viewed from the axial direction.

The present invention may combine the configurations described in the above-described embodiments and modifications without departing from the gist of the present invention, and addition, omission, replacement, and other modifications of the configuration are possible. . Moreover, the present invention is not limited by the above-described embodiments and the like, but is limited only by the scope of the claims.

According to the cutting blade and the method for manufacturing the cutting blade of the present invention, it is possible to improve the rigidity of the blade while maintaining good sharpness of the cutting edge. Therefore, it has industrial applicability.

DESCRIPTION OF SYMBOLS 1... Bond phase 1a... Plate surface 2... Abrasive grains 3, 33, 43, 53, 63... Bond reinforcing part 3c... Concave part 10, 30, 40, 50, 60, 70... Cutting blade 11 ... cutting edge portion, 12 ... blade main body portion, 14 ... flange contact portion, 15 ... main body exposed portion, 44 ... granular material, 100 ... base metal, 102 ... pre-plating phase, B ... boundary, F ... flange, O ... center Shaft, PB... Plating bath, S12, S22, S71, S81... Bond reinforcing part positioning process, S13, S24... Plating process, S23... Preliminary plating process, S25... Preliminary plating removal process, S72... Blade body part plating process, S73 ... cutting edge plating step, S82 ... compression molding step, S83 ... sintering step

Claims (18)

A bond phase having a disc shape centered on the central axis and having a cutting edge portion arranged on the outer peripheral portion;
a plurality of abrasive grains dispersed in at least the cutting edge;
a plurality of bond reinforcements held by the bond phase and having a higher Young's modulus than the bond phase;
The bond phase is
the cutting edge portion;
a blade main body positioned radially inward of the cutting edge;
The plurality of bond reinforcements are arranged on the blade body,
Cutting blade. The bond reinforcing portion extends in one direction when viewed from the axial direction,
The radial position of one end and the radial position of the other end of both ends of the bond reinforcing portion are different from each other.
A cutting blade according to claim 1. The plurality of bond reinforcing portions are arranged at rotationally symmetrical positions with respect to the central axis.
A cutting blade according to claim 1 or 2. The bond reinforcing portion is exposed on the plate surface facing the axial direction of the bond phase,
A cutting blade according to any one of claims 1 to 3. The bond reinforcing portion has a recess recessed from the outer surface of the bond reinforcing portion,
A cutting blade according to any one of claims 1 to 4. The bond reinforcing portion has a rough surface portion having a surface roughness of a predetermined value or more on the outer surface of the bond reinforcing portion,
A cutting blade according to any one of claims 1 to 5. The bond reinforcing portion has a rod shape extending in one direction when viewed from the axial direction,
A cutting blade according to any one of claims 1 to 6. The bond reinforcing portion extends in one direction when viewed from the axial direction,
The bond reinforcing portion has a plurality of granular bodies arranged in the one direction,
A cutting blade according to any one of claims 1 to 6. The blade main body is
a flange contact portion arranged radially inward of the boundary between the blade main body portion and the cutting edge portion;
a body exposure portion located radially between the boundary and the flange contact portion;
The bond reinforcement portion is arranged over the flange contact portion and the body exposed portion,
A cutting blade according to any one of claims 1 to 8. The bond reinforcement part is made of ceramics,
A cutting blade according to any one of claims 1 to 9. The bond reinforcement part is made of diamond,
A cutting blade according to any one of claims 1 to 9. The bond phase is a plating phase,
The bond reinforcement portion is made of a non-conductive material,
A cutting blade according to any one of claims 1 to 11. The bond reinforcement part is made of cemented carbide,
A cutting blade according to any one of claims 1 to 9. The bond phase is any one of a resin bond phase, a metal bond phase, and a vitrified bond phase,
A cutting blade according to any one of claims 1 to 11 and 13. A method of manufacturing a cutting blade according to claim 1, comprising:
a bond reinforcing portion positioning step of positioning and fixing the bond reinforcing portion to the base metal;
a plating step of immersing the bond reinforcing portion and the base metal in a plating bath to deposit the bond phase on the base metal;
A method for manufacturing a cutting blade. A method of manufacturing a cutting blade according to claim 1, comprising:
a bond reinforcing portion positioning step of positioning and fixing the bond reinforcing portion to the base metal;
a preliminary plating step of immersing the bond reinforcing portion and the base metal in a first plating bath to deposit a preliminary plating phase of a material different from the bond phase on the base metal;
a plating step of immersing the bond reinforcing portion, the base metal and the preliminary plating phase in a second plating bath different from the first plating bath to deposit the bond phase on the preliminary plating phase;
a pre-plating removal step of removing the pre-plating phase from the laminate of the bond phase and the pre-plating phase;
A method for manufacturing a cutting blade. A method of manufacturing a cutting blade according to claim 1, comprising:
a bond reinforcing portion positioning step of positioning and fixing the bond reinforcing portion to the base metal;
A blade body plating step of immersing the bond reinforcing portion and the base metal in a plating bath to deposit the blade body on the base metal;
While rotating the blade main body and the bond reinforcing part separated from the base metal in the plating bath, the cutting edge protrudes radially outward from the outer peripheral part and extends in the circumferential direction to the outer peripheral part of the blade main body. A cutting edge portion plating step for depositing a portion,
A method for manufacturing a cutting blade. A method of manufacturing a cutting blade according to claim 1, comprising:
a bond reinforcement portion positioning step of positioning and fixing the bond reinforcement portion in a mold;
a compression molding step of filling the mold with a mixed powder containing the raw material powder of the bond phase and performing compression molding to form a disk-shaped blade molded body;
a sintering step of sintering the blade compact,
A method for manufacturing a cutting blade.

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