JPH0798323B2 - Cutting tools - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting tool in which a plate-shaped blade is detachably attached to a blade holder.

[0002]

2. Description of the Related Art FIGS. 3 and 4 show a cutting tool 51 mainly used for grooving or fork cutting in wood processing as a conventional example of a cutting tool composed of a tool holder and a tool. This conventional cutting tool 51 includes a shank portion 53 gripped by an appropriate driving device (not shown) and a blade attachment portion 54 integrally formed on the tip side of the shank portion 53.
And a rectangular plate-shaped blade 60 detachably attached to the blade fastening surface 55 formed on the blade mounting portion 54 of the blade holder 52 by a plurality of blade mounting bolts 59, 59. Composed.

As shown in FIGS. 3 and 5, the cutting tool 60 has cutting edges 62, which have the same addendum angles on their four sides.
62, 63, 63 are formed. On the other hand, a positioning surface 56 having the same inclination angle as the tip angle of the blade 5 is provided along the axial direction at a position near the rear end of the blade mounting surface 54 of the blade mounting portion 54 in the rotational direction. Has been formed.
The blade 5 has the blade mounting bolt 59 in a state in which one of the pair of first cutting blades 62, 62 extending in the longitudinal direction is abutted against the positioning surface 56.
Is fixed by.

When the blade 5 is fixed to the blade fastening surface 55, the other first cutting edge 62 of the blade 5 is used.
Has a tooth tip protruding forward from the front end 55a of the tool fastening surface 55 by a predetermined amount, and one cutting edge 63 of the pair of second cutting edges 63, 63 has an end on the shaft end side of the tool fastening surface 55. It projects from the edge 55b axially forward by a predetermined amount. That is, in this conventional cutting tool 51, the amount of protrusion of the cutting edge on the peripheral surface side (in other words, the mounting position of the blade 5 in the radial direction of the blade holder) is determined by the first cutting edge 62 of the blade 60 and the blade mounting portion 54. It is achieved by abutting against the positioning surface 56 of the. The protrusion amount of the second cutting blade 63 (in other words, the mounting position of the blade 5 in the axial direction of the blade holder) does not define this, and is set by the empirical subjectivity of the operator.

Further, in this cutting tool 51, since the pair of the first cutting edge 62 and the second cutting edge 63 is provided as described above, the tip of the cutting edge is gradually worn away due to long-term use. If the sharpness decreases, the blade 60
Once, reverse it, set the first cutting edge 62 and the second cutting edge 63 that were not used until now to the cutting side, and use the new cutting edges 62 and 63 with these settings changed. Then, a predetermined cutting work is performed.

[0006]

By the way, even when the cutting tool 51 such as the conventional cutting tool 51 is capable of being used upside down, when two sets of the cutting edges are worn away and the sharpness becomes poor. Therefore, it is necessary to re-polish the blade 60 to recover the sharpness.

However, when the blade 60 is re-polished, the width dimension (that is, the distance between the pair of first cutting edges 62, 62) and the length dimension (that is, the distance between the pair of second cutting edges 63, 63). It is unavoidable that both dimensions decrease. However,
In the conventional cutting tool 51, as described above, the blade 60
The positioning of the blade holder in the radial direction of the blade holder is performed on the positioning surface 56 formed on the rear end side of the blade tightening surface 55.
Since the cutting blade 62 is made to abut, the re-polished blade 60 is made to abut the positioning surface 56 of the blade mounting portion 54 with one of the first cutting blades 62 as in the case of a new product. And position the blade holder in the radial direction,
Naturally, the amount of protrusion of the tooth tip is smaller than the regular amount of protrusion (that is, the amount of protrusion at the time of new product), and the planned cutting ability cannot be exhibited.

Further, due to the decrease in the radius of gyration of the addendum,
Particularly in the case of automatically controlling the cutting work, there may occur a problem that the initially planned work accuracy cannot be secured due to a change in the distance between the tool shaft center and the tooth tip. Further, if it is attempted to perform the positioning with the regular protrusion amount, it is inevitable that the operator must rely on the intuition of the operator, which causes a new problem such as a decrease in workability or a variation in positioning accuracy.

Therefore, in general, although there is a demand for re-polishing and reusing the blade 60 from the viewpoint of cost reduction, it is necessary to avoid the inconvenience associated with the re-polishing as described above. When the sharpness of the cutting blade became poor, it was customary to discard it and mount a new blade 60 newly.

Therefore, according to the present invention, the cutting tool is designed so that the positioning of the blade after the re-polishing can be performed easily and surely to enable the re-polishing / reuse of the blade, thereby reducing the material cost to reduce the cost. It was made as an offer.

[0011]

In the present invention, the following constitution is adopted as a concrete means for solving such a problem.

According to the first aspect of the present invention, the tool is fastened to the driving device and is configured to rotate about the axis thereof. The tool is fastened to the outer peripheral surface of the tool by a flat surface parallel to the axis. The blade holder 2 having the surface 10 formed therein and a cutting blade 32 which is composed of a substantially rectangular plate body and extends linearly on at least one side thereof are formed together with the blade fastening surface 10.
On the other hand, in a cutting tool including a blade 5 detachably attached in a state in which the cutting edge line 32a of the cutting blade 32 is extended outward in the radial direction by a predetermined amount from the rotation locus of the blade holder 2, First stoppers 13, 1 projecting on the blade fastening surface 10 of the blade holder 2 above the blade fastening surface 2.
6 on the other hand, the blade holder 5 is formed on the blade holder 5 in the direction in which the blade 5 is moved to the cutting blade 32 side.
To form the first stopper receiving surfaces 35 and 38 for restricting the further movement of the blade 5 by engaging with the first stoppers 13 and 16 on the side. With respect to the position where the first stopper receiving surfaces 35 and 38 are formed, the blade tip line 32a of the blade 5 is radially outward from the rotational trajectory of the blade holder 2 by a predetermined amount in a state where these are engaged with each other. The feature is that it is set relatively so that it can be extended.

According to a second aspect of the invention, in the cutting tool according to the first aspect, the cutting edge 32 of the cutting tool 5 is projected on the cutting tool fastening surface 10 of the cutting tool holder 2 and the cutting edge 32 of the cutting tool 5. The second stoppers 11, 12, 14, 15 formed of inclined surfaces that are asymptotic to the tip surface 2a of the blade holder 2 are formed toward the front side in the extending direction of the blade holder 2, while the blade tip is provided on the blade tip 5. The second stopper 1 is composed of an inclined surface having a predetermined inclination angle with respect to the line 32a.
A second stopper receiving surface 33, 34, 36, 37 for restricting the movement of the cutting tool 5 in a direction parallel to the cutting edge line 32a by engaging with 1, 12, 14, 15 is formed. I am trying.

[0014]

With each of the inventions of the present application, the following effects can be obtained by adopting such a configuration.

(A) In the cutting tool according to the first aspect of the invention, the first stoppers 13 and 16 formed on the blade fastening surface 10 of the blade holder 2 and the first stopper holder formed on the blade 5 are provided. The surfaces 35 and 38 are engaged with each other in the direction in which the blade 5 is moved to the cutting edge side, whereby the blade 5
The movement of the blade 5 is restricted, and in the restricted state, the cutting edge line 32a of the cutting tool 5 causes the cutting tool holder 2 to move.
A predetermined amount is extended outward in the radial direction from the rotation locus. Therefore, even if the width dimension of the blade 5 changes due to re-polishing of the cutting blade 32, the first stopper receiving surface 35 of the blade 5 is equivalent to the disappearance amount of the cutting blade 32 due to re-polishing. , 38 are cut off at the same time, the distance between the first stopper receiving surfaces 35, 38 and the cutting blade 32 can be maintained the same as that of a new product. Therefore, when reattaching the blade 5 after re-polishing, the first stopper receiving surfaces 35, 38 of the blade 5 are attached to the blade fastening surface 10 as in the case of a new product.
With the simple operation of abutting against the first stoppers 13 and 16, the tip protrusion amount can be reliably set to the normal state.

(B) In the cutting tool according to the invention described in claim 2, in addition to the operation described in (a) above, the following unique operation can be obtained. That is, in addition to the first stoppers 13 and 16 and the first stopper receiving surfaces 35 and 38, the blade 5 is attached to the blade fastening surface 10 of the blade holder 2.
Forming the second stoppers 11, 12, 14, 15 composed of inclined surfaces that are asymptotic to the tip surface 2a of the blade holder 2 as it goes toward the front side in the extending direction of the blade 32, while the blade 5 Is formed of an inclined surface having a predetermined inclination angle with respect to the cutting edge line 32a.
Since the second stopper receiving surfaces 33, 34, 36, 37 for restricting the movement of the blade 5 in the direction parallel to the cutting edge line 32a by engaging with the blades 1, 12, 14, 15 are formed. , The first stopper receiving surfaces 35, 38 and the second stopper receiving surfaces 33, 34, when the cutting edge 32 of the blade 5 is re-polished.
If both 36 and 37 are deleted corresponding to the disappearance amount at the time of re-polishing, the first stopper surfaces 35, 38 and the second stopper receiving surfaces 33, 34, 3 at the time of reattachment after re-polishing.
6 and 37 corresponding to the first stoppers 13 and 1
6 and the second stoppers 11, 12, 14, 15 are abutted against each other, so that the blade 5 is attached in a state in which the blade 5 is relatively displaced forward relative to the attachment position when the blade 5 is new.
Both the mounting position with respect to the radial direction and the mounting position with respect to the axial direction of the blade holder 2 are surely set to the normal position.

[0017]

Therefore, according to the inventions of the present application, the following effects can be obtained.

According to the cutting tool of the first aspect of the present invention, even if the size of the cutting tool 5 is reduced and changed by re-polishing the cutting tool 5, the cutting tool fastening surface 10 is provided with respect to the first stoppers 13 and 16. To engage the first stopper receiving surfaces 35 and 38 on the side of the blade 5 to move the blade 5 to the blade holder 2
Since the blade 5 after re-polishing is reliably attached to the regular attachment position in which the blade edge line 32a is extended outward from the rotational trajectory of the blade edge line holder 2 by a predetermined amount by positioning with respect to Further, the blade 5 can be reused by re-polishing, and the cost can be reduced by reducing the material cost.

According to the cutting tool of the second aspect of the present invention, in addition to the effects described above, when the blade is reattached after re-polishing, the blade is positioned in the blade holder radial direction, and at the same time the axial direction of the blade holder is adjusted. Since the positioning is also performed, the invention can be applied to a tool such as a cutting tool for cutting a groove, which needs to be attached to the tip side of the tool holder 2 with the cutting edge 32 extended by a predetermined amount. It is something that enhances the sex.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The cutting tool of the present invention will be described below in detail with reference to the accompanying drawings. FIGS. 1 and 2 show a cutting tool for woodworking according to an embodiment of the invention of claims 1 and 2 of the present application. 1 is shown. The cutting tool 1 includes a cutting tool holder 2 described below, which is gripped by an appropriate driving device and is driven to rotate about its axis, and a plate-shaped cutting tool 5 described later, which is attached to the cutting tool holder 2. The blade holder 2 is composed of a shank portion 3 serving as a grip portion for the driving device, and a blade attachment portion 4 continuously formed on one end side of the shank portion 3. Then, at two positions facing each other in the radial direction with the shaft center of the blade mounting portion 4 interposed therebetween, the blade fastening surfaces 10, 10 provided with three screw holes 7, 7, 7, respectively, are opposite to each other. Has been formed. The blade fastening surface 10 is composed of a smooth surface formed by subjecting one side of the shaft body to chamfering. And this knife fastening surface 1
Protruding portions, which will be described later, are formed at both ends in the axial direction of 0.

That is, first, at the end portion 10c of the blade fastening surface 10 close to the blade holder end surface 2a, there are formed a first raised portion 21 and a second raised portion 22 back and forth in the surface direction of the blade fastening surface 10. Are formed. Of the two raised portions 21 and 22, the first raised portion 21 located on the rear side in the rotation direction of the blade holder 2 has a side surface 11 on the blade fastening surface 10 side, which is located behind the blade fastening surface 10. An inclined surface is formed so as to gradually approach the end surface 2a from the end edge 10a toward the front end edge 10b and reach the end surface 2a (hereinafter, the inclined surface 11 is referred to as a first guide surface 11).

On the other hand, the second raised portion 22 located on the front side in the rotation direction has an inclined surface 12 (hereinafter, the inclined surface 12) extending parallel to the first guide surface 11 on the side of the cutting tool fastening surface 10. Is referred to as a second guide surface 12) and an axial surface 13 (hereinafter, this axial surface 13 is referred to as a third guide surface 13) extending in the blade holder axial direction at the rear end of the second guide surface 12. ing.

On the other hand, the shank portion 3 of the blade fastening surface 10
An inclined surface 14 (hereinafter, referred to as the inclined surface 1) that faces the first guide surface 11 and extends parallel to the first guide surface 11 is provided at the end 10d near the end.
4 is referred to as a fourth guide surface 14)
And an axial surface 16 (hereinafter, referred to as the axial surface 16) that extends in the axial direction of the blade holder continuously to the front end of the fourth guide surface 14.
Is referred to as a sixth guide surface 16) and an inclined surface 15 that is continuous with the sixth guide surface 16 and extends parallel to the fourth guide surface 14.
(Hereinafter, this inclined surface 15 is referred to as a fifth guide surface 15) and a fourth raised portion 24 is formed.

Of the guide surfaces 11 to 16, the third guide surface 13 and the sixth guide surface 16 correspond to the first stopper in the claims, and the other guide surfaces 11 and 12, 14 and 15 correspond to the second stoppers in the claims.

The tool 5 tool 5, a predetermined one side of the pair of long sides of the substrate portion 31 having a substantially parallelogram-shaped plate body becomes and three long hole-shaped bolt insertion holes 8,8,8 It is configured by forming a cutting edge 32 having a cutting edge angle of. Further, of the pair of short sides 31a, 31b of the base plate portion 31, one of the short sides 31a is provided with a cutting edge line 32a of the cutting edge 32 on the front end 10b of the tool fastening surface 10.
And is parallel to the front end 10b of the blade fastening surface 10.
From the above, the inclined surface 33 facing the first guide surface 11 (hereinafter, this inclined surface 33 is referred to as a first contact surface 33) and the second guide surface 12 are opposed to each other. Inclined surface 34 (hereinafter, this inclined surface 34 is referred to as a second contact surface 34) and an end surface 35 that abuts against the third guide surface 13 (hereinafter, this end surface 35 will be referred to as a third contact surface 35).
And) are formed.

On the other hand, on the other short side 31b, the guide surfaces 11, 12 on the side of the cutter holder 22 corresponding to the contact surfaces 33, 34, 35 on the side of the one short side 31a, respectively. , 13 in an abutting state, the inclined surface 36 facing the fourth guide surface 14 (hereinafter, the inclined surface 3
6 is referred to as a fourth contact surface 36) and an inclined surface 37 (hereinafter, this inclined surface 37 is referred to as a fifth contact surface 37) facing the fifth guide surface 15 is abutted with the sixth guide surface 16. An end surface 38 (hereinafter, this end surface 38 is referred to as a sixth contact surface 38) is formed.

Incidentally, the contact surfaces 33, 34, 35, 36, 3 described above.
Of 7,38, the third contact surface 35 and the sixth contact surface 38 correspond to the first stopper receiving surface in the claims, and the other contact surfaces 33, 34, 36, 37. Corresponds to the second stopper receiving surface in the claims. Then, in this case, the contact surfaces 33, 3 constituting the second stopper receiving surface
4, 36, 37 are spaced apart from each other (the lengthwise dimension of the blade 5) by the contact surfaces 33, 34, 36, 37 in the state where the blade 5 is placed on the blade fastening surface 10. The size is set so that the guide surfaces 11, 12, 14, 15 on the side of the tool fastening surface 10 forming the corresponding second stopper can closely face each other in a substantially abutting state. Needless to say, the major axis direction of each of the bolt insertion holes 8, 8, 8 is substantially parallel to the surface direction of each of the contact surfaces 33, 34, 36, 37 of the cutting tool 5.

Attachment of the blade 5 to the blade holder 2 When the blade 5 is attached to the blade fastening surface 10 of the blade holder 2, first, the blade 5 is mounted on the blade fastening surface 10 from above or behind it. Place. In this case, the axial relative position of the blade 5 with respect to the blade fastening surface 10 is
The contact surfaces 33, 34, 36, 37 of the blades are respectively the blade fastening surface 1
By abutting surfaces 35, 38 that closely face the guide surfaces 11, 12, 14, 15 on the 0 side and extend in the axial direction against the guide surfaces 13, 16 on the side of the tool fastening surface 10, respectively. Positioned automatically. Further, the blade 5 is positioned in the radial direction (that is, the extension amount of the blade tip line 32a is set) by the guide surfaces 13 on the side of the blade fastening surface 10 to which the contact surfaces 35 and 38 of the blade 5 correspond, respectively. It will be done automatically by abutting with 16,16. In this case, as shown in FIG. 2, the cutting edge corner portion 39 of the blade 5 is projected forward by a predetermined amount from the end surface 2a of the blade holder 2.

When the positioning of the blade 5 with respect to the blade fastening surface 10 is completed in this way, the blade mounting bolts 6, 6, 6 passed through the bolt insertion holes 8, 8 of the blade 5 are fastened with the blade. It is screwed into the screw holes 7, 7, 7 on the surface 10 side, and these are fastened and fixed by the blade mounting bolts 6, 6, 6. This completes the assembly of the blade 5. Therefore, it becomes possible to perform a predetermined cutting operation using the cutting tool 1 to which the blade 5 is attached. In this case, as described above, the blade 5
Since the cutting edge corner portion 39 of the above is projected forward from the blade holder end surface 2a, it is possible to perform not only the cut edge cutting processing but also the groove cutting processing using the cutting edge corner portion 39 together. .

Reattachment of the cutting tool 5 after re-polishing When the predetermined cutting process using the cutting tool 1 is performed for a long period of time, the cutting edge portion of the cutting blade 32 is gradually worn away and its sharpness deteriorates. Therefore, in such a case, it is necessary to re-polish the blade 5.

When the blade 5 is re-polished, the width of the blade 5 (that is, the dimension in the direction orthogonal to the longitudinal direction of the cutting edge 32) is reduced by the amount of grinding. Therefore, when the blade 5 is positioned on the rear end side of the blade 5 as in the conventional case, when the width dimension of the blade 5 is shortened by re-polishing, the blade tip extension amount is increased in the rear end side positioning. Since the accuracy cannot be obtained, it is already described that this is discarded and replaced with another new blade 5 without re-polishing.

However, in the embodiment,
Since the blade 5 is positioned in the radial direction (that is, the amount of protrusion of the blade tip is set) on the front side in the extending direction of the blade 5, the width of the blade 5 becomes smaller than that of a new product by re-polishing. However, without being affected by this, it is possible to mount it in the regular position again like a new product. That is, when the cutting blade 32 portion of the blade 5 is re-polished, the third contact surface 35 serves as a positioning portion of the blade 5 in the minor axis direction.
And the sixth abutment surface 38 by a dimension corresponding to the reduction of the blade width dimension by re-polishing, the second abutment surface 34 and the fifth abutment surface 38.
The abutment surface 37 is cut along the inclination direction. In this way, the re-polished blade 5 is mounted again on the blade fastening surface 10 of the blade holder 2, and the third contact surface 35 and the fifth contact surface 37 correspond to the blade. By abutting the third guide surface 13 and the sixth guide surface 16 on the side of the fastening surface 10, the position of the cutting edge 32 of the cutting edge 32 is reset to the same position as when a new product is mounted. Therefore, when cutting is performed using the re-polished blade 5, the same processing accuracy and workability as when using a new blade 5 can be secured.

In this case, since both ends of the blade 5 in the longitudinal direction are guided by the inclined surfaces, the blade 5 is scraped by the third abutting surface 35 and the sixth abutting surface 38, so that the blade 5 is more than a new one. When fixed in a state where it is entirely advanced, it also moves forward in the axial direction at the same time, and the cutting edge corner portion 3 of the cutting tool 5 is also moved.
9 is automatically set to the same protruding position as that of a new product.

As described above, in the cutting tool 1 according to this embodiment, even if the width dimension of the blade 5 is reduced and changed by the re-polishing, the cutting tool 1 is not affected by the change, and the cutting tool 1 can be easily mounted again at the regular mounting position. Since it can be set with a simple operation and reliably, the blade 5 can be re-polished and repeatedly used, and as a result, the material cost can be reduced, which can contribute to cost reduction.

In this embodiment, the cutting blade 32 is formed only on one side of the pair of long sides of the blade 5, but the present invention is not limited to this, and for example, this Needless to say, the cutting edges 32 may be formed on both of the long sides, and the contact surfaces 33 to 38 similar to the above may be formed. Particularly in the case of such a structure, the blade 5 is used by being inverted and the re-polishing is simultaneously performed on the pair of cutting blades 32, 32, so that the number of re-polishing is reduced and the re-polishing cycle is prolonged. It is possible to reduce the operating cost.

Further, in the above-mentioned embodiment, the cutting edge corner portion 39 of the cutting tool 5 and the cutting edge 32a of the cutting blade 32 and the second
Although the cutting edge corner portion 39 is formed into an acute angle by intersecting the contact surface 34, in another embodiment of the present invention, for example, the front end portion of the second contact surface 34 is cut at the cutting edge. It is also possible to make the blades shift toward the rear side from the end face of 32 so as to form bidirectional cutting blades intersecting at right angles like a conventional cutting tool at the cutting blade corner portion 39.

[Brief description of drawings]

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

FIG. 2 is a view taken along the line II-II in FIG.

FIG. 3 is a side view of a main part of a conventional cutting tool.

4 is a view taken along the line IV-IV in FIG.

FIG. 5 is a perspective view of the blade shown in FIG.

[Explanation of symbols]

1 is a cutting tool, 2 is a blade holder, 3 is a shank portion, 4
Is a blade mounting portion, 5 is a blade, 6 is a blade mounting bolt, 7 is a screw hole, 8 is a bolt insertion hole, 10 is a blade fastening surface, 11 is a first guide surface, 12 is a second guide surface, 13 is a first 3 guide surfaces, 14 4th guide surfaces, 15 5th guide surfaces, 16 6th guide surfaces, 21 1st protrusions, 22 2nd protrusions,
23 is the third raised portion, 24 is the fourth raised portion, 31 is the substrate portion,
32 is a cutting edge, 32a is a cutting edge line, 33 is a first contact surface, 34
Is a second contact surface, 35 is a third contact surface, 36 is a fourth contact surface,
37 is a fifth contact surface, 38 is a sixth contact surface, and 39 is a cutting edge corner portion.

Claims (2)

[Claims] 1. A shaft body which is mounted on a drive device and is rotated about its axis, and which is provided on an outer peripheral surface of the shaft body.
The blade fastening surface (10) which is a flat surface parallel to the axis is shaped
It is composed of a blade holder (2) made and a substantially rectangular plate body and is directly attached to at least one side thereof.
A cutting edge (32) extending linearly is formed, and the cutting tool is also provided.
The cutting edge line (32) of the cutting blade (32) with respect to the fastening surface (10).
a) is a predetermined amount from the rotation locus of the blade holder (2)
A cutting tool provided with a blade (5) detachably attached in a state of being extended outward in the radial direction only, the blade being attached to the blade fastening surface (10) of the blade holder (2) .
A first stopper (13, 1 ) protruding above the fastening surface (2)
6) is formed, on the other hand, the cutting tool (5) is provided with the cutting blade (32).
Side of the blade holder (2) in the direction of moving to the side
A first stopper receiving surface (35, 38) for restricting further movement of the blade (5) by engaging with the first stopper (13, 16) of Stoppers (13, 16) and the above first
These are the stopper receiving surfaces (35, 38) of
In the engaged state, the cutting edge line (32) of the cutting tool (5) is
a) is a predetermined amount from the rotation locus of the blade holder (2)
The formation position is relative so that it can be extended radially outward only
A cutting tool characterized by being set in a specific way . 2. The cutting tool according to claim 1, wherein the cutting tool fastening surface (10) of the cutting tool holder (2) is provided with the cutting tool .
While protruding above the fastening surface (10), the blade (5)
As the cutting edge (32) extends toward the front in the extending direction, the above
Inclined surface asymptotic to the tip surface (2a) of the blade holder (2)
The second stopper consists in (11,12,14,1
5) is formed, while the blade (5) has a predetermined length with respect to the cutting edge line (32a).
The second stopper which is composed of an inclined surface having an inclination angle of
(11, 12, 14, 15) and said blade by engaging
Move (5) in the direction parallel to the cutting edge line (32a).
The second stopper receiving surface (33, 34, 36, 3) that regulates
A cutting tool characterized in that 7) is formed .