JPH11254222A - Cutting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize and firmly fix a blade to the cutter body and simultaneously make a fine adjustment of the blade tip position. SOLUTION: A constantly stable fixed condition of a blade 14 is maintainable by preventing the blade 14 sustaining centrifugal force by rotation of the a tool during cutting operation from coming off or dispersing from a cutter body 12 by provided an engagement section of a thrust groove and a blade projection section closely engaging with each other on the blade 14 mounting part to be fitted and fixed to the cutter body 12 of a cutting tool, a blade fixing means 20 for stably fixing the blade 14 to the cutter body 12 in a certain posture by acting thrust force on it, a fine adjustment means 30 for making fine adjustments of the tip position by slightly moving the blade 14 by sliding it in the radius direction with respect to the axis of rotation of the cutter body 12 prior to fixation of the blade 14 by the fixing means 20, and a wedge part between the blade 14 and a tightening piece of the blade fixing means 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to a milling tool, and more particularly, to a milling tool having a structure in which a plurality of blades are attached to a cutter body, and rotating about a rotation axis of the cutter body. The present invention relates to a cutting tool that performs cutting while imparting a desired cut along a desired contour to a work by axial feed in three axes of X, Y, and Z.

[0002]

2. Description of the Related Art Milling tools which attach a throw-away tip or a blade to be polished to a cutter body and apply a cutting action to a workpiece in accordance with rotation of the cutter body are well known. In this type of milling tool, a cutter (fixed portion) made of a high-hardness sintered material (CBN material, PCD material, or the like) comparable to diamond and used for re-polishing is fixed to the cutter body using a fixing tool. By rotating the cutter body around the rotation axis, that is, by rotating the processing tool and rotating the cutter relative to the work in three axial directions of X, Y, and Z, a desired inner or outer surface of the work is provided. Contouring tools for performing cutting along a locus have already been provided.

[0003] For example, there is a milling tool comprising a throw-away insert of the invention, which is a drilling method disclosed in Japanese Patent Publication No. 6-4205. The tip of this tool has a gradient angle γ of 0 to 1 ° for forming a back taper, and feeds in the axial direction in an operation (so-called contouring) that combines rotation and orbit (revolution) on a circular orbit. Drilling is performed by the added operation (helical processing).

[0004] Further, Utility Model Registration Publication No. 2532861
No. 1 discloses a face milling cutter. The present invention relates to a face milling cutter in which a chip having a high-hardness sintered body on a cutting edge is detachably mounted at a predetermined position on the outer periphery of a main body, and particularly to a face milling cutter which facilitates management of positional accuracy after re-grinding of a cutting edge. Things.

[0005]

However, in the conventional cutting tool, the blade is mounted on the cutter body by a simple surface in which the mounting surface of the blade abuts against the flat mounting surface of the main body under pressing force. Due to contact, the mounting accuracy is insufficient due to misalignment at the time of installation, or the mounting position of the blade tends to shift due to cutting reaction force or vibration during processing, etc. The disadvantage is that the dimensional accuracy and surface roughness do not reach the desired accuracy range, and the fine adjustment of the blade tip position with respect to the rotation axis of the cutter body in the radial direction cannot be easily performed. When multiple blades are attached to the main body, it is difficult to evenly align the cutting edge positions in the radial direction of all the blades around the rotation axis. It can not be carried out processing that shared equally by all of the blade, particularly in such case where the high speed cutting, finishing accuracy in workpiece machining surface deteriorates, even had drawbacks such as the blade of the service life is shortened.

Further, the conventional cutting tool does not have a positive means for preventing the blade attached to the cutter body from being detached from the cutter body when the blade attached with the fixture to the cutter body receives a centrifugal force during high-speed rotation. In addition, there is a problem that the blades may be scattered, and the rotation speed cannot be sufficiently increased. Accordingly, it is an object of the present invention to provide a cutting tool having an improved structure that has solved the drawbacks of the conventional cutting tool.

Another object of the present invention is to provide a blade fixing means for stably and firmly fixing the blade to the cutter body, and to finely adjust the position of the cutting edge in the state where the blade is mounted to the rotation axis of the cutter body. Therefore, even when a plurality of blades are mounted, all blade edge positions can be set at a constant radial position with respect to the rotation axis of the cutter body. It is an object of the present invention to provide a cutting tool provided with a means for preventing the detachment of a blade.

[0008]

SUMMARY OF THE INVENTION According to the present invention, a pressing force is exerted on a cutter body of a cutting tool and a fitting engagement between a groove and a convex portion at a mounting portion of a regrintable blade attached to the cutter body. A fixed structure is adopted to fix the blade immovably in a fixed posture with respect to the cutter body, and the blade is rotated before the fixing by pressing force while maintaining the close contact engagement between the groove and the projection. Introduces a fine adjustment mechanism that allows fine adjustment of the position of the cutting edge by finely moving it in the radial direction with respect to the axis, and cutting by high-speed rotation by inserting a wedge-shaped structure between the blade and the fixed structure At times, a blade that has been subjected to centrifugal force can act as a blocking force so that it does not separate from or scatter from the cutter body, making it possible to always maintain a stable state of blade installation, thereby achieving high-precision machining of workpieces. Can be applied to One in which you configure the Do not cutting tool.

That is, according to the present invention, there is provided a cutting blade type cutting tool in which a plurality of blades each having a blade portion are mounted on a cutter body, and the cutter body is mounted on a tool holder to perform cutting. A plurality of blades having a blade portion consisting of a front blade and a side blade at the tip of the handle portion, receiving the handle portion of the blade at a plurality of blade mounting positions, and protruding the blade portion of the blade in the radial direction. A blade comprising a combination of a cutter body to be attached, a concave groove formed in an engaging portion for attaching a handle portion of the blade to the cutter body, and formed in a radial direction and a complementary convex portion engaged with the concave groove. Positioning means; blade position adjusting means for slightly moving the blade in the radial direction to adjust the position of the blade in the radial direction; and positioning the blade at the blade mounting position of the cutter body. Cutting tool characterized in that it is configured by including a blade fixing means for fixing the contact form via the positioning means is provided.

In this case, the blade has a wedge surface region in which the width of a handle portion of the blade gradually decreases from a radially inner side to a radially outer side in a state where the blade is attached to the cutter body. A clamping piece having a pressing surface formed of a wedge surface complementary to the wedge surface area that comes into contact with the wedge surface area of the handle portion of the blade under pressing force, and the blade is inserted through the fastening piece. It is preferable that the cutting tool is configured to be fixed to the cutter body.

The blade positioning means is a cutting tool comprising a concave groove formed in a radial direction at a blade mounting position of the cutter body and a convex part formed in a longitudinal direction on a handle portion of the blade. Is preferred. Further, the blade positioning means may be configured to include a concave groove formed in a handle portion of the blade in a longitudinal direction and a convex portion formed in a radial direction at a blade mounting position of the cutter body.

Further, a side cutting edge of the blade may be a finishing cutting tool formed in parallel with a rotation axis of the cutter body. On the other hand, a cutting tool for rough machining may be provided in which the side blade of the blade has a gradient inclined by a small angle θ in a direction approaching the rotation axis of the cutter body. Further, the tool holder may be a cutting tool having a mounting portion for mounting on a main shaft of a machine tool and a mounting portion for mounting the cutter body, and the cutter body being mounted on the tool holder.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail based on embodiments shown in the accompanying drawings. In the figure,
FIG. 1 is a bottom view of the cutting tool according to the embodiment of the present invention, FIG. 2 is a side view of the cutting tool with a part cut away, FIG. 3 is an enlarged detailed view of a portion A in FIG. Is a cross-sectional view taken along the line IV-IV in FIG. 3, FIG. 5 is a side view showing a positional relationship between a tool holder (jig) used for re-grinding the blade and the re-grinding wheel,
FIG. 6 is a front view of the same jig taken along line VI-VI of FIG.
Is an enlarged sectional view of the cutting edge of the tool of the present invention for finishing, and FIG. 8 is an enlarged sectional view of the cutting edge of the tool of the present invention for roughing.

1 and 2, a cutting tool 10 is detachably mounted and fixed to a cylindrical cutter body 12 forming a tool body and a blade mounting position provided on the bottom side of the cutter body 12. The cutting tool 10 according to the present embodiment is configured to include four blades 14 at four equally-spaced blade mounting positions on the cutter body 12. . The tool 10 has an opening in the center, is fixed with screws 13a via a tool holder 13 mounted in the opening, is mounted on a spindle of a machine tool such as a milling machine or a machining center, and rotates the spindle of the machine tool. Accordingly, the four blades 14 fixed to the cutter body 12 are provided with a rotation about the rotation axis C and the coaxial center of the cutter body 12. The length of the cutter body 12 in the axial direction is set according to the depth of the portion to be machined. For example, when a deep hole is formed by contouring, it is necessary to make the length considerably longer. The broken line in FIG. 2 means that there are various longitudinal dimensions.

Each blade 14 has a shaft 16 and a shaft 16.
A cutting edge portion 18 provided at the tip of the
Protrudes outward from the outer periphery of the cutter body 12 in a radial direction or a radial direction with respect to the rotation axis C of the cutter body 12, and a blade tip 18 a, a side blade 18 b, and a front blade 18 c are formed on the blade edge portion 18. I have. The plurality of (four) blades 14 are fixed to the blade mounting position of the cutter body 12 by blade fixing means 20 described later, and firmly so as to maintain immovability against a reaction force due to cutting resistance during cutting. Fixed. Further, according to the present invention, there is provided a blade edge position adjusting means 30 capable of finely adjusting the amount of protrusion of the blade tip 18a of the blade edge portion 18 of each blade 14 from the outer periphery of the main body.
The cutter body 12 of the blade tip 18a in the blade tip 18 of No. 4
Can be made uniform from the rotation axis C.

Attention is now directed to one of the blades 14 shown in section A of FIG. 1. As shown in FIGS. 3 and 4, the handle 16 of the blade 14 has one side surface 16 a of the blade fixing means 20. Pressing surface 22 of tightening piece 22 as a component
a. When receiving a pressing force from the tightening piece 22, a V-shaped convex portion 16b formed on the other side surface of the handle portion 16 that is in front and back relationship with the one side surface 16a is formed at the blade mounting position of the cutter body 12. The pressing groove 12a is pressed in a complementary manner to the V-shaped pressing groove 12a.
This has a structure in which the blade 14 is firmly fixed to the blade mounting position of the cutter body 12 via the handle 16. In this case, the fastening piece 22 is attached to the cutter body 12.
Diagonal recess 1 provided on the blade mounting surface (bottom side)
2b is a piece member which is slidably and loosely fitted in the inside 2b so as to be able to move up and down, has a slightly threaded female screw hole 22a formed in the center, and moves down in the oblique recess 12b. As the pressure increases, the one side surface 16a of the blade 14 is provided as an element capable of exerting a gradually increasing pressing force from the pressing surface 22b.

On the other hand, the recess 12b of the cutter body 12
A female screw hole 12c of a female screw and a reverse screw formed in the female screw hole 22a of the tightening piece 22 is formed below the
The female screw hole 22a of the tightening piece 22 and the female screw hole 12c of the cutter body 12 are formed concentrically.
A threaded rod 24 is screwed into the a and 12c. The screw rod 24 is, of course, the upper screw portion 2 screwed into the female screw hole 22a.
4a and a lower screw portion 24b screwed into the female screw hole 12c. For example, a hexagonal hole is formed at the upper end of the threaded rod 24, and by using an appropriate tool such as a well-known hexagonal wrench, the threaded rod 24 is given a turning action by an arrow R, and accordingly the threaded rod 24 is provided. 24 is formed so as to be able to enter into the inside of the cutter body 12 or to be pulled up outside. At this time, when the screw rod 12 is moved downward toward the cutter body 12, the tightening piece 22 is obliquely recessed 12b of the cutter body 12 because of the reverse screw as described above.
And the pressing surface 22b of the tightening piece 22 presses the one side surface 16a of the blade 14, so that
The V-shaped mounting projection 16b on the opposite side is
The blade 14 is fixedly fixed to the cutter main body 12 by being firmly adhered and fixed to the V-shaped pressing groove 12a. When the screw rod 12 is turned in the opposite direction and pulled up, the fastening piece 22 also moves upward, and the blade 14
The pressing force on is relaxed. An arrow P in FIG. 4 indicates the movement of the tightening piece 22.

Here, as described above, the V
When the V-shaped mounting convex portion 16b is seated and fixed in close contact with the V-shaped pressing groove 12a on the cutter body 12, the convex portion of the blade 14 is formed by the V-shaped pressing groove 12a, unlike a simple flat surface abutment. 16b is sandwiched and fitted, so that a stable and immovable close contact and fixed state can be formed. Moreover, the V-shaped pressing groove 12a and the V-shaped projection 1
A positioning function by contact with the blade 6b is also obtained, and by forming the V-shaped pressing groove 12a with high precision in advance, the mounting position accuracy of each blade 14 with respect to the cutter body 12 can be improved.

As described above, each of the plurality of blades 14 is fixed to the plurality of blade mounting positions of the cutter body 12,
At this time, since the blade 14 can be fixed to each blade 14 with strong and high positioning accuracy by the blade fixing means 20, the blade 14 is fixed immovably even when it receives a reaction force due to cutting resistance at the time of cutting. The state can be maintained, and therefore, it is possible to stably and variously cope with a wide range of cutting of a work from low-speed heavy cutting to high-speed finish cutting. Here, the V-shaped pressing groove 12a is provided on the cutter body 12 side, and the V-shaped convex portion 16b is provided on the blade 14 side. However, the relationship is reversed, and the V-shaped pressing groove is provided on the blade side, and the V-shaped convex portion is provided. It may be configured to be provided on the cutter body side.

On the other hand, the cutting edge position adjusting means 30 according to the present invention.
Is provided on the inner side in the radial direction at each blade mounting position in the cutter body 12, and is pressed from the rear end side in the radial direction of each blade 14 so that the blade tip 18 of the blade 14 is moved outward from the outer periphery of the cutter body 12. And a structure capable of finely adjusting the amount of protrusion. That is, the cutting edge position adjusting means 30 has a spherical pressing portion 32 at the tip, and the screw shaft 3 screwed integrally with the cutter body 12 via the operating portion 34 behind the spherical pressing portion 32.
8, an appropriate number of operation holes 36 are formed around the operation section 34, and a screw shaft 38 is cut through the operation section 34 by inserting an operation rod (not shown) into the operation hole 36. It has a structure that can be finely rotated as shown by an arrow S with respect to a corresponding screw hole of the main body 12, and the spherical pressing portion 32 moves forward or backward as shown by an arrow Q according to the rotation of the screw shaft 38. Then, at the time of forward movement, the pressing portion 32 presses the blade 14 so that the blade 14 can be moved by a small amount toward the outside in the radial direction with respect to the rotation axis C of the cutter body 12. As a result, the amount of protrusion of the blade tip portion 18 of the blade 14 from the outer periphery of the cutter body 12 can be finely adjusted. When the screw shaft 38 is rotated in the reverse direction, a gap is formed between the spherical pressing portion 32 and the blade 14, and the blade 14 can be easily pushed in from the outside toward the inside of the cutter body 12 and retracted. It is possible.

When the blade 14 is advanced or retracted in adjusting the position of the cutting edge, the V-shaped projection 16b formed on the handle 16 of the blade 14 and the V-shaped pressing groove 12a provided on the cutter body 12 are used. If the fixing action of the blade fixing means 20 is previously relaxed in the fitting area, the blade 14 smoothly moves forward and backward by the sliding and guiding by the V-shaped pressing groove 12a, so that it is possible to finely adjust the cutting edge. It has become.

As described above, the blade edge position adjusting means 30 is provided at the rear end position side of each blade 14, so that when the blades 14 are attached and fixed to a plurality of blade mounting positions of the cutter body 12, respectively. In addition, the blade tip 18a of the blade tip 18 of each blade 14 can be disposed on the same circumference with respect to the rotation axis C of the cutter body 12, so that the cutting action can be evenly performed by the plurality of blades 14. Since the load can be shared, the load acts on one of the blades in a biased manner, eliminating disadvantages such as increase in blade wear and damage to the blade edge, prolonging the life of the blade and improving efficiency and efficiency. Accurate cutting can be realized.

Here, in the contouring tool 10 according to the present embodiment, one side surface 16a of the shank 16 of the blade 14 comes into contact with a pressing surface 22b of the tightening piece 22 of the blade fixing means 20 to press the blade. As described above, the V-shaped convex portion 16b on the opposite side has a configuration in which the V-shaped convex portion 16b on the opposite side is brought into close contact with and fixed to the V-shaped pressing groove 12a of the cutter body 12 as described above. Is formed in advance as an inclined surface in which the width of the shaft portion 16 is larger on the inner depth side in the radial direction with respect to the rotation axis C of the cutter body 12 than on the outer side in the radial direction. That is,
The wedge shape is provided to gradually increase the width dimension W (see FIG. 3) of the handle 16 from the outside to the inside.
Accordingly, by pressing the pressing surface 22b of the fastening piece 22 correspondingly, the fastening piece 22 of the blade fixing means 20 once fixes the blade 14 once the blade 14 is fixed.
4 cannot slide in the V-shaped pressing groove 12a of the cutter body 12, so that even if a large centrifugal force acts on the blade 14 in the process of rotating the cutting tool 10 at a high speed and performing the cutting work, the blade 4 does not slide. The fear of moving and jumping towards the perimeter of the has been cleverly and completely avoided.

In the case where the blade tip 18 is worn due to continuous use of the blade 14, the worn blade 14 is removed from the cutter body 12 by the blade fixing means 20.
5 by removing the fixation, as shown in FIGS.
The above-described V-shaped pressing groove 12a formed in the cutter body 12
The V-shaped convex portion 16b of the worn blade 14 is fitted into the tool holder 40 for the re-grinding jig having the pressing groove 42 of the same structure as that shown in FIG. The regrinding site in the cutting edge portion 14 may be regrinded by a grinding wheel 46 of a grinder (not shown). The blade 14 thus re-ground has its V
Due to the fitting structure between the convex part 16b and the V-shaped pressing groove 12a of the cutter body 12, the blade fixing means 20 can closely adhere to and fix the cutter body 12 with good reproducibility. Of course, it is obvious that the position adjustment of the blade tip 18a of the blade portion 18 of the blade 14 after re-grinding can also be executed by the blade position adjusting means 30. Blade 1
When a V-shaped pressing groove is formed on the fourth side, it is natural that the combination is such that a V-shaped projection is formed on the tool holder 40 side.

Referring now to FIG. 7 together with FIG. 2, in the finishing tool of the present invention, the side blade 18b of the cutting edge 18 of each blade 14 is formed parallel to the rotation axis C of the cutter body 12. It is desirable to be done. In addition, front blade 18c
Are formed perpendicular to the rotation axis C, that is, the side blades 18
It is desirable that the corner angle between b and the front blade 18c be formed at a right angle. Finishing usually sets the cutting amount and feed amount small, so that even if the side blade 18b or the front blade 18c rubs with the machined surface, vibration does not occur, and the tool life is hardly shortened. The effect of improving the roughness of the finished surface and the processing accuracy is great.

Next, a rough machining tool according to the present invention will be described with reference to FIG. 8 together with FIG. The outer peripheral edge 18b of the cutting edge 18 of each blade 14 of the rough machining tool is radially inward from the outer peripheral side of the cutter body 12 with respect to the rotation axis C of the cutter body 12 as approaching the direction in which the blade 14 is mounted on the spindle. It is desirable to have a structure (so-called back taper) having a slope angle θ inclined toward. Providing the blade 14 with the blade edge 18 having the side blade 18b provided with the back taper on the blade 14 in this way, as shown in FIG. Since the side blade 18b keeps the relationship in which the side blade 18b is tilted down, the side blade 18b comes into contact with the cutting surface Wa in a press-contact state at the time of cutting, so that the blade tip 18a further tears the surface after cutting. Machined and machined surface W
a is not roughened. Therefore, when initial roughing is performed on the workpiece Wk using the contouring tool 10 according to the present embodiment, the roughened surface and tool Can be avoided. Of course, in order to obtain the cutting effect by the side blade 18b, the above-described gradient angle θ cannot be increased so much, and is preferably set experimentally in the range of 30 ′ to 1 °.
For the same reason, it is also desirable that the front blade 18c be inclined toward the main shaft as it approaches the rotation axis, that is, the corner angle between the outer peripheral blade 18b and the front blade 18c be formed at an acute angle.

In this embodiment, the V-shaped pressing groove 12a and the V
Although the combination with the convex part 16b has been described, the present invention is not limited to the V-type, but may be a combination of a U-shaped or square-shaped pressing groove and a mounting convex part. Further, although the fine adjustment mechanism based on the advance and retreat of the screw has been described as the blade edge position adjustment means 30, other embodiments such as a fine adjustment mechanism using a gradient may be used.

[0028]

As described above, the present invention has been described based on the preferred embodiments. However, the present invention relates to a cutter body of a cutting tool,
The V-shaped pressing groove and the protruding portion are preferably provided with a tightly engaging portion at a mounting portion with the re-polishable blade attached thereto, and a pressing force is applied to the tightly engaging portion so as to cut the blade. The fixed structure fixed to the main body in a fixed position is fixed, and the blade is fixed to the cutter body before fixing by pressing force while maintaining the close contact engagement between the pressing groove and the convex portion of the blade. A fine adjustment mechanism that can finely adjust the position of the cutting edge by finely sliding and moving in the radial direction with respect to the rotation axis is provided, and a wedge-shaped structure is interposed between the blade and the fixed structure to rotate at high speed. The blade that has received the centrifugal force from the cutter body during the cutting process can also act as a blocking force so that it does not separate from the cutter body, so that it is possible to always maintain a stable mounting state of the blade. Bray No fear that the vibration is generated in the cutting edge, also regrinding later can also maintain the posture of the blade to a predetermined position. Therefore, by using the cutting tool according to the present invention, it is possible to perform high-precision cutting work such as contouring work from both viewpoints of machining dimensional accuracy and surface roughness, and to prolong the life of the tool. And a wide range of cutting from low-speed heavy cutting to high-speed finishing cutting can be performed, and a cutting tool with high machining efficiency can be obtained.

[Brief description of the drawings]

FIG. 1 is a bottom view of a cutting tool according to an embodiment of the present invention.

FIG. 2 is a side view of the cutting tool, partially cut away.

FIG. 3 is an enlarged detail view of a portion A in FIG. 1;

FIG. 4 is a sectional view taken along line IV-IV of FIG.

FIG. 5 is a side view showing a positional relationship between a tool holder (jig) used for regrinding the blade and a regrinding grindstone.

FIG. 6 is a front view of the jig as viewed from the line VI-VI in FIG. 5;

FIG. 7 is an enlarged sectional view of a cutting edge portion of the tool of the present invention for finishing.

FIG. 8 is an enlarged sectional view of a cutting edge portion of the tool of the present invention for rough machining.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Cutting tool 12 ... Cutter main body 12a ... Pressing groove 13 ... Tool holder 14 ... Blade 16 ... Handle 16a ... One side surface 16b ... Mounting protrusion 18 ... Blade edge 18a ... Blade tip 18b ... Side blade 18c ... Front blade 20 ... Blade fixing means 22 ... Tightening piece 22a ... Female screw hole 22b ... Pressing surface 24 ... Screw rod 24a ... Upper screw part 24b ... Lower screw part 30 ... Cutting edge position adjusting means 32 ... Spherical part 36 ... Operation part 38 ... Screw shaft

Claims (7)

[Claims] 1. A cutting blade type cutting tool in which a plurality of blades each having a blade portion are mounted on a cutter body, and the cutter body is mounted on a tool holder to perform a cutting process. A plurality of blades having a blade portion composed of a blade and a side blade; a cutter body for receiving a handle portion of the blade at a plurality of blade mounting positions and mounting the blade portion of the blade by projecting in a radial direction; Blade positioning means provided in an engaging portion for attaching a handle portion of the blade to the cutter body, the blade positioning means comprising a combination of a concave groove formed in a radial direction and a complementary convex portion engaging with the concave groove; A blade position adjusting means for finely moving the blade in the radial direction to adjust the position of the blade edge of the blade in the radial direction; and Cutting tool characterized in that it is configured by including a blade fixing means for fixing the wear form, a. 2. The blade has a wedge surface region in which a width of a handle portion of the blade gradually decreases from a radially inner side to a radially outer side in a state where the blade is attached to the cutter body. A clamping member having a pressing surface formed of a wedge surface complementary to the wedge surface region that abuts on the wedge surface region of the blade handle portion under a pressing force; and the blade is connected to the cutter body via the clamping member. The cutting tool according to claim 1, wherein the cutting tool is configured to be fixed to the cutting tool. 3. The blade positioning means comprises a concave groove formed in a radial direction at a blade mounting position of the cutter body, and a convex portion formed in a longitudinal direction on a handle portion of the blade. 3. The cutting tool according to 2. 4. The blade positioning means comprises a concave groove formed in a longitudinal direction in a handle portion of the blade, and a convex portion formed in a radial direction at a blade mounting position of the cutter body. The cutting tool according to 1. 5. The finishing machine according to claim 1, wherein a side blade of the blade is formed in parallel with a rotation axis of the cutter body.
The cutting tool according to any one of items 1 to 4. 6. The rough machining method according to claim 1, wherein the side blade of the blade has a gradient inclined by a small angle θ in a direction approaching the rotation axis of the cutter body. The described cutting tool. 7. The tool holder according to claim 1, wherein the tool holder has a mounting portion for mounting on a spindle of a machine tool and a mounting portion for mounting the cutter body, and the cutter body is mounted on the tool holder. The cutting tool according to item 1.