WO2015020274A1

WO2015020274A1 - Insert, tool holder, and assembly thereof

Info

Publication number: WO2015020274A1
Application number: PCT/KR2013/010339
Authority: WO
Inventors: 임상호; 안동섭; 민병훈; 조성우; 김영흠
Original assignee: 한국야금 주식회사
Priority date: 2013-08-07
Filing date: 2013-11-14
Publication date: 2015-02-12
Also published as: KR101531975B1; KR20150017550A

Abstract

The objective of the present invention is to provide an insert which is capable of distributing a load applied thereto and can prevent separation from a tool holder during a cutting operation or a processing of a groove. To this end, the insert of the present invention is an insert comprising a cutting unit for cutting a work material and a holder coupling unit coupled with the tool holder, wherein the holder coupling unit comprises: a holder coupling surface to be coupled with the tool holder; and at least one holder connection hole formed at the holder coupling surface, wherein the holder connection hole has the shape of which the width gradually reduces or increases from the cutting unit to the rear direction thereof.

Description

Inserts, Tool Holders and Their Assemblies

The present invention relates to an insert used for cutting or grooving, a tool holder for receiving it and an assembly in which they are coupled to each other.

In general, the insert is fastened to a cutting tool mounted on a machine tool and used to cut a workpiece composed of ferrous, nonferrous metals, nonmetallic materials, and the like.

Such an insert typically includes a cutting portion for cutting the workpiece directly and a fastening portion inserted into and fastened to an opening of the holder of the cutting tool. For reference, the fastening part includes an upper fastening surface fastened to the ceiling surface of the opening of the holder and a lower fastening surface fastened to the bottom surface of the opening of the holder.

In the prior art, Korean Patent No. 10-0626926 as shown in FIGS. 13 and 14 has the same depth and width in the direction in which the

upper fastening surface

38 or 42 is inserted into the holder, and has a "V" shape. A cutting insert clamping mechanism is disclosed, which is elongated in the shape, and the lower fastening surface 32 also has the same depth and width in the inserting direction and is elongated in the shape of a “V”. However, the

upper fastening surface

38 or 42 or the lower fastening surface 32 is formed in the same depth and width in the direction of insertion into the holder, that is, it is formed in a form extending unchanged in the direction of insertion, cutting or grooving A concentrated load is applied to a part of the seam insert to cause breakage of the insert, or the insert is released due to a weakening of the fastening force due to the concentrated load applied to the part.

The technical problem of the present invention is to provide an insert which can distribute the load applied to the insert during cutting or grooving and can prevent the departure from the tool holder in advance.

Another technical problem of the present invention is to provide a tool holder capable of distributing the load applied to the insert during cutting or grooving and preventing the insertion of the insert in advance.

Another technical problem of the present invention is to provide an assembly of an insert and a tool holder which can distribute the load applied to the insert during cutting or grooving and can prevent the insertion of the insert in advance.

In order to achieve the above object, the insert according to the embodiment of the present invention is an insert including a cutting portion for cutting the workpiece and a holder fastening portion fastened to the tool holder, the holder fastening portion, a holder for fastening to the tool holder Fastening surface; And at least one holder connector formed on the holder fastening surface, wherein the holder connector has a shape in which its width becomes smaller or larger as it goes rearward from the cutting portion.

The holder connector may have a recessed channel shape.

The holder connector may have a shape in which the recessed depth becomes shallower or deeper toward the rear from the cutting portion.

The holder connector may have a shape in which the width thereof becomes smaller as the depth of the holder is increased.

The at least one holder connector may include first and second holder connectors, and the first and second holder connectors may be sequentially formed rearwardly from the cutting portion and spaced apart from each other.

On the other hand, the tool holder according to an embodiment of the present invention, a tool holder including an insert fastening portion for fastening the holder fastening portion of the insert, the insert fastening portion, an insert fastening surface for fastening the holder fastening portion of the insert; And at least one insert connector formed on the insert fastening surface, wherein the insert connector has a shape in which its width becomes smaller and larger as it goes toward the rear end of the insert fastening portion.

The insert connector may have a protruding rail shape.

The insert connector may have a shape in which the protruding degree becomes longer or shorter toward the rear end of the insert fastening portion.

The insert connector may have a shape in which its width decreases as the protruding length thereof becomes longer.

On the other hand, the insert and the assembly of the tool according to an embodiment of the present invention, the insert and the tool holder is assembled with a tool holder including an insert including a cutting portion and a holder fastening portion and an insert fastening portion to which the holder fastening portion is inserted and fastened An assembly of the holder fastening part, the holder fastening surface fastened to the tool holder; And at least one holder connector formed on the holder fastening surface, wherein the insert fastening portion includes an insert fastening surface to which the holder fastening surface is fastened; And at least one insert connector formed on the insert fastening surface and connected to the at least one holder connector, respectively, wherein the holder connector has a shape that becomes smaller or larger in width in the direction in which the holder fastener is inserted. In addition, the insert connector has a shape that becomes smaller or larger in width so as to correspond to the holder connector.

The holder connector may have a recessed channel shape, and the insert connector may have a protruding rail shape.

The holder connector may have a shape in which the recessed depth becomes shallower or deeper as the holder fastening portion is inserted, and the insert connector has a longer or shorter protruding degree as opposed to the shape of the holder connector. It may have a shape.

The holder connector may have a shape in which the width thereof becomes smaller as the depth of the holder is increased, and the insert connector may have a shape in which the width thereof becomes smaller as the protruding length thereof becomes longer to correspond to the holder connector.

The insert connector and the holder connector may be in surface contact with each other, but the portion contacting the surface may become larger or smaller as the holder fastening portion is inserted.

A first surface of the insert connector facing the holder connector may be spaced apart from the holder connector, and both edges of the first surface may contact the holder connector, and the width of the first surface may correspond to the holder fastening portion. It can get smaller or larger as it is inserted.

The longest vertical length between the first surface and the holder connector may be shorter or longer as the direction of the holder fastening is inserted.

As described above, the insert, the tool holder and the assembly thereof according to the embodiment of the present invention may have the following effects.

According to the embodiment of the present invention, since the insert has a holder connector having a shape that becomes smaller or larger in width toward the rear from the cutting portion, the load applied to the insert during cutting or grooving can be distributed and due to the load distribution Departure from the tool holder can be prevented in advance.

In addition, according to an embodiment of the present invention, since the tool holder has an insert connector with a shape that becomes smaller or larger in width toward the rear end of the insert fastening portion, the load applied to the insert during cutting or grooving can be distributed and the load Dispersion prevents the insert from slipping off.

In addition, according to an embodiment of the present invention, the insert has a holder connector of a shape that becomes smaller or larger in width as the holder fastening portion is inserted, and the tool holder becomes smaller or smaller in width so as to correspond to the holder connector. It has an insert connector with a larger shape, thereby distributing the load applied to the insert during cutting or grooving and preventing the insert from slipping out due to the load distribution.

1 is a perspective view showing an insert according to an embodiment of the present invention.

FIG. 2 is a plan view illustrating the insert of FIG. 1. FIG.

3 is a front view showing the insert of FIG.

4 is a perspective view showing a tool holder according to an embodiment of the present invention.

5 is a front view of the tool holder of FIG. 4.

6 is an assembly perspective view illustrating an assembly process of an insert and a tool holder assembly according to an embodiment of the present invention.

FIG. 7 is a perspective view illustrating a state in which the assembly of the insert and the tool holder of FIG. 6 is assembled.

8 is a front view illustrating the assembly of the insert and tool holder of FIG. 7.

9 is a view showing sequentially the main cross-sections (a), (b), (c) and (d) to show one feature of the assembly of the insert and tool holder of FIG.

FIG. 10 is a view showing sequentially the main cross-sections (a), (b), (c) and (d) to show other features of the assembly of the insert and tool holder of FIG.

FIG. 11 is a view illustrating a process of processing a groove in a recess of a workpiece by using an assembly of an insert and a tool holder according to an exemplary embodiment of the present invention.

12 is a view showing a process of cutting the main portion of the workpiece using the assembly of the insert and the tool holder according to an embodiment of the present invention.

13 is a view showing a conventional cutting insert clamping mechanism.

FIG. 14 is a sectional view of principal parts of the cutting insert clamping mechanism of FIG. 13; FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

1 is a perspective view illustrating an insert according to an embodiment of the present invention, FIG. 2 is a plan view illustrating the insert of FIG. 1, and FIG. 3 is a front view illustrating the insert of FIG. 1.

Insert 100 according to an embodiment of the present invention, as shown in Figures 1 to 3, includes a cutting portion 110 and the holder fastening portion 120.

The cutting part 110 is a part which cuts directly the workpiece (refer to "10" of FIG. 11 or FIG. 12). The holder fastening part 120 is a part fastened to the tool holder 200. Specifically, as shown in FIGS. 1 to 3, the holder fastening part 120 includes a holder fastening surface 121 for fastening to the tool holder 200 and at least one formed on the holder fastening surface 121. The holder connector 122 may be included. For example, at least one holder connector 122 may be one, although not shown, and includes two first and

second holder connectors

122a and 122b, as shown in FIGS. It may be a dog, or more. Hereinafter, the case where the holder connector 122 is two, that is, having the first and second holder connector (122a, 122b) will be described mainly.

For example, as shown in FIGS. 1 to 3, the first holder connector 122a may have a shape in which its width decreases gradually from the cutting part 110 toward the rear side (the right direction based on FIG. 2). Although not shown in another example, the width of the cutting portion may increase gradually toward the rear side. Therefore, compared to the conventional insert having the same width connector (see 18 in FIG. 14), when the width of the first holder connector 122a is changed, the area in contact with the tool holder 200 is changed while cutting or grooving. The load applied to the seam insert 100 may be distributed and a problem in which the insert 100 is separated from the tool holder 200 due to the load distribution may be minimized.

In particular, the first holder connector 122a may have a recessed channel shape as shown in FIGS. 1 and 3, and may have a protruding rail shape, although not shown in another example. . For example, when the first holder connector 122a has a recessed channel shape as shown in FIGS. 1 and 3, the first member of the tool holder 200, which is the mating member described below, is illustrated as shown in FIG. 5. The insert connector 212a may have a protruding rail shape. On the contrary, when the first holder connector has a protruding rail shape, the first insert connector of the tool holder, which is a mating member, may have a recessed channel shape. will be.

In addition, when the first holder connector 122a has a recessed channel shape, as shown in FIGS. 3 and 9, the first holder connector 122a has a recessed depth toward the rear of the cutting unit 110. May have a shape that becomes shallower (see D1> D2 in FIG. 9), or may have a shape in which the recessed depth becomes deeper, although not shown in another example. Therefore, compared to a conventional insert having a connector having the same depth (see dotted line in FIG. 13), when the depth of the first holder connector 122a is changed, the area in contact with the tool holder 200 is changed while cutting or grooving. The load applied to the seam insert 100 may be further distributed, and the problem that the insert 100 is separated from the tool holder 200 due to the load distribution may be further reduced.

Further, the first holder connector 122a may have a shape in which the width thereof becomes smaller as the depth thereof increases. For example, the first holder connector 122a may have a substantially “V” shape but have a rounded bottom surface (see FIGS. 1 and 9).

As shown in FIGS. 1 to 3, the second holder connector 122b is spaced apart from the first holder connector 122a and is formed on the holder fastening surface 121, and has a rearward direction in the cutting part 110. It may be formed after the first holder connector 122a as a reference. Furthermore, the first holder connector 122a has a shape that is inclined upward gradually toward the rear from the cutting portion 110, and the second holder connector 122b has a shape that gradually slopes downward from the cutting portion 110 toward the rear. Except having a second holder connector 122b is the same as the first holder connector 122a described above, so a detailed description thereof will be omitted.

Hereinafter, a tool holder according to an exemplary embodiment of the present invention will be described with reference to FIGS. 4 and 5.

Figure 4 is a perspective view showing a tool holder according to an embodiment of the present invention, Figure 5 is a front view showing the tool holder of FIG.

Tool holder 200 according to an embodiment of the present invention, as shown in Figures 4 and 5, the tool mounting portion (not shown) and the insert fastening portion 210.

The tool mounting part (not shown) mounts the tool holder 200 to a cutting device (not shown).

The insert fastening part 210 is a part to which the holder fastening part 120 of the insert 100 is fastened. Specifically, as shown in FIGS. 4 and 5, the insert fastening part 210 includes an opening part 220 into which the holder fastening part 120 of the insert 100, which is a mating member, is inserted, and the opening part ( An insert fastening surface 211 for fastening the holder fastening portion 120 of the insert 100, which is a counterpart member, provided on a surface corresponding to the mating member among the inner surfaces of the 220 and at least formed on the insert fastening surface 211. One insert connector 212 may be included. For example, at least one insert connector 212 may be one, although not shown, including two first and

second insert connectors

212a and 212b, as shown in FIGS. 4 and 5. It may be a dog, or more. Hereinafter, the case where the insert connector 212 is two, that is, having the first and second insert connector (212a) (212b) will be described mainly.

For example, as shown in FIGS. 4 and 5, the first insert connector 212a may have a shape in which its width decreases gradually toward the rear end of the insert fastening portion 210. The width of the fastening portion toward the rear end may be increased. Therefore, compared to a conventional tool holder having a connector having the same width (see 20 in FIG. 14), when the width of the first insert connector 212a is changed, the area in contact with the insert 100 is changed while cutting or grooving. The load applied to the seam insert 100 may be distributed and a problem in which the insert 100 is separated from the tool holder 200 due to the load distribution may be minimized.

In particular, the first insert connector 212a may have a protruding rail shape, as shown in FIG. 5, or may have a recessed channel shape, although not shown in another example. For example, when the first insert connector 212a has a protruding rail shape as shown in FIG. 5, the first holder connector of the insert 100, which is the above-described mating member, as shown in FIGS. 1 and 3. 122a may have a recessed channel shape. On the contrary, when the first insert connector has a recessed channel shape, the first holder connector of the insert, which is the aforementioned counterpart, may have a protruding rail shape. .

In addition, when the first insert connector 212a has a protruding rail shape, the first insert connector 212a is protruded toward the rear end of the insert fastening portion 210 as shown in FIGS. 5 and 9. May have a shape that becomes longer and longer (see L1 <L2 in FIG. 9), or may have a shape in which the degree of protruding becomes shorter, although not shown in another example. Therefore, compared to a conventional insert having a connector having the same protruding length (see 20 in FIG. 14), when the protruding length of the first insert connector 212a is changed, the area in contact with the insert 100 is changed while cutting or grooves are made. It is possible to further distribute the load applied to the insert 100 during processing and to further reduce the problem that the insert 100 is separated from the tool holder 200 due to the load distribution.

Furthermore, the first insert connector 212a may have a shape in which the width thereof becomes smaller as the protruding length thereof becomes longer. For example, the first insert connector 212a may have a substantially trapezoidal shape (see FIGS. 4 and 9).

As shown in FIGS. 4 and 5, the second insert connector 212b is spaced apart from the first insert connector 212a and is formed on the insert coupling surface 211, and faces the rear end of the insert coupling portion 210. It can be formed after the first insert connector 212a based on the direction. Furthermore, the first insert connector 212a has a shape that is inclined upward toward the rear end of the insert fastening portion 210, and the second insert connector 212b is gradually tilted downward toward the rear end of the insert fastening portion 210. Except having a photographic shape, since the second insert connector 212b is the same as the first insert connector 212a described above, a detailed description thereof will be omitted.

6 to 10, the assembly of the insert and the tool holder according to an embodiment of the present invention will be described.

FIG. 6 is an assembly perspective view illustrating an assembly process of an insert and a tool holder assembly according to an embodiment of the present invention, FIG. 7 is a perspective view illustrating an assembly of the insert and tool holder assembly of FIG. 6, and FIG. 7 is a front view showing the assembly of the insert and the tool holder of FIG.

FIG. 9 is a view showing the main sections in sequence (a), (b), (c) and (d) in order to show one feature of the assembly of the insert and tool holder of FIG. 8, FIG. In order to show the different features of the assembly of the insert and the tool holder, the main sections are shown in sequence (a), (b), (c) and (d).

The assembly of the insert and the tool according to one embodiment of the invention, as shown in Figures 6 to 8, includes an insert 100 and a tool holder 200.

The insert 100 includes a cutting part 110 and a holder fastening part 120. Specifically, the cutting portion 110 is a portion that directly cuts the workpiece (see "10" in FIG. 11 or 12), the cutting portion 110 of the insert 100 according to the embodiment of the present invention described above. Is the same as The holder fastening part 120 is a part fastened to the tool holder 200 and is the same as the holder fastening part 120 of the insert 100 according to the embodiment of the present invention described above. Therefore, with reference to the insert 100 according to an embodiment of the present invention for more specific components constituting the holder fastening portion 120.

The tool holder 200 includes a tool mounting part (not shown) and an insert fastening part 210. Specifically, the tool mounting part (not shown) is the same as the tool mounting part of the tool holder 200 according to the above-described embodiment of the present invention by mounting the tool holder 200 to a cutting device (not shown). The insert fastening part 210 is a part to which the holder fastening part 120 of the insert 100 is fastened, which is the same as the insert fastening part 210 of the tool holder 200 according to the embodiment of the present invention. Therefore, with reference to the tool holder 200 according to an embodiment of the present invention for more specific components constituting the insert fastening portion 210.

In particular, the insert 100 has a first and second holder connector 122a having a shape that decreases in width in the direction in which the holder fastening portion 120 is inserted (or another example, but increases in shape although not shown). And 122b), the tool holder 200 is formed of a tapered shape (or another example, a tapered shape, not shown) to correspond to the first and

second holder connectors

122a and 122b. Since the fastening area of the insert 100 and the tool holder 200 is changed in three dimensions, the first and

second insert connectors

212a and 212b have a load applied to the insert 100 during cutting or grooving. It is possible to distribute and to minimize the problem that the insert 100 is separated from the tool holder 200 due to the load distribution.

In addition, as shown in FIGS. 8, 9 (a) and 9 (b), the first insert connector 212a and the first holder connector 122a are in surface contact with each other, but the portion of the surface contact is in contact with the holder. The fastening part 120 may be larger and larger toward the direction in which the fastening part 120 is inserted, and although not shown, the site contacting part may be smaller and smaller. In addition, as shown in FIGS. 8, 9 (c) and 9 (d), the second insert connector 212b and the second holder connector 122b are in surface contact with each other, and the surface contacted portion is fastened to the holder. The portion 120 may increase in the direction in which the portion 120 is inserted, and although not illustrated as another example, the portion in contact with the surface may decrease in size. Therefore, as the fastening area is changed, the load applied to the insert 100 may be further distributed during cutting or grooving, and the problem of the insert 100 being separated from the tool holder 200 due to the load distribution may be further reduced. .

Specifically, the first surface S1 facing the first holder connector 122a of the first insert connector 212a may be spaced apart from the first holder connector 122a, and both edges of the first surface connector S1a may be spaced apart from each other. It may be in contact with the first holder connector 122a. In this case, the width of the first surface S1 (the shortest horizontal distance between both edges of the first surface S1) is fastened to the holder as shown in Figs. 8, 9 (a) and 9 (b). It may be smaller and smaller toward the direction in which the portion 120 is inserted (see a> b in FIG. 9), or may be larger and larger toward the direction in which the holder fastening portion is inserted, although not illustrated as another example. In addition, the first surface S1 of the second insert connector 212b facing the second holder connector 122b may be spaced apart from the second holder connector 122b, and both edges of the first surface S1 may be formed. 2 may be in contact with the holder connector 122b. In this case, the width of the first surface S1 (the shortest horizontal distance between both edges of the first surface S1) is fastened to the holder as shown in Figs. 8, 9 (c) and 9 (d). It may become smaller toward the direction in which the portion 120 is inserted (see c> d in FIG. 9), or may become larger as the holder fastening portion is inserted, although not shown in another example.

Accordingly, the change of the width of the first surface S1 may be controlled by supplying a clamping force extended to the left and right and the inside of the contact region limited to a left and right section based on the long direction (inserted longitudinal direction) centerline of the insert 100. It has the role of preventing the tightening force biased in a certain section in the direction and evenly supply the fastening force in a wide section in the left and right directions, ultimately to achieve a stable fastening and increase the life of the tool.

Furthermore, the longest vertical length between the first surface S1 and the first holder connector 122a is in the direction in which the holder fastening portion is inserted as shown in FIGS. 8, 10 (a) and 10 (b). It may be shorter (see e <f in FIG. 10), and may be longer and longer in the direction in which the holder fastening part 120 is inserted, although not shown in another example. In addition, the longest vertical length between the first surface S1 and the second holder connector 122b is inserted into the holder fastening portion 120 as shown in FIGS. 8, 10 (a) and 10 (b). It may become shorter and shorter in the direction (see g> h of FIG. 10), or may be longer and longer in the direction in which the holder fastening is inserted, although not shown in another example.

Therefore, such a change in the longest vertical length may evenly distribute the fastening force to the fastening surface (for example, the upper surface) of the insert 100 to the upper and lower sides to increase the safety of the fastening force. In addition, when the insert fastening portion 210 descends, the longest vertical length may be reduced to implement a stronger fastening force.

As a result, although the conventional insert and the fastening of the tool holder is a two-dimensional fastening, the present invention can implement a three-dimensional fastening method so that the load distribution is made smoothly compared to the prior art while providing a more stable and strong fastening force. Can be.

11 and 12, the operation and effect of the present invention through the cutting of the workpiece using the assembly of the insert and the tool holder according to an embodiment of the present invention will be described in more detail.

11 is a view showing a process of processing a groove in the main portion of the workpiece using the assembly of the insert and the tool holder according to an embodiment of the present invention, Figure 12 is a view of the insert and tool holder according to an embodiment of the present invention It is a figure which shows the process of cutting the main part of a workpiece | work using an assembly.

As shown in FIG. 11, while the assembly of the insert and the tool holder of the present invention is moved in the directions of

arrows

1, 2 and 3, there is a fear of tremor or movement of the insert 100 in the second path. There is a risk that the insert 100 is detached because the insert 100 is inserted in the opposite direction of the fastening direction of the insert 100 during the second path, but in the present invention, a more stable and strong fastening force is provided, so it is stable at the time of two side infeeds and the back facing 3 times. When facing, it is possible to prevent slippage due to the change of fastening cross section.

As shown in FIG. 12, while the assembly of the insert and the tool holder of the present invention is moved in the directions of

arrows

1 and 2, an interference phenomenon occurs between the machining surface and the tool during the 2nd path, and thus the insert 100 is moved. Although there is a risk of departure, the present invention can structurally prevent slippage of the insert 100 due to an interference phenomenon due to the changed fastening cross section.

According to the embodiment of the present invention, since the insert 100 has a holder connector 122 of a shape that decreases in width toward the rear from the cutting part 110 (or another example, but increases in shape, not shown), In the cutting or grooving process, the load applied to the insert 100 may be distributed, and the deviation from the tool holder 200 may be prevented due to the load distribution.

In addition, according to an embodiment of the present invention, the insert connector 212 of the shape (or another example, but not shown) in the width of the tool holder 200 gradually decreases toward the rear end of the insert fastening portion 210 Since it is possible to disperse the load applied to the insert 100 during cutting or grooving, it is possible to prevent the departure of the insert 100 due to the load distribution.

In addition, according to the embodiment of the present invention, the insert 100 is a holder connector of a shape (or another example, getting larger but not shown) the width becomes smaller toward the direction in which the holder fastening portion 120 is inserted ( In addition to having 122), the tool holder 200 has an insert connector 212 in a shape that becomes smaller in width (or in another example, that increases in shape but not shown) to correspond to the holder connector 122. When cutting or grooving, the load applied to the insert 100 may be distributed, and the separation of the insert 100 may be prevented due to the load distribution.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

The present invention can be used for inserts used for cutting and tool holders for receiving them.

Claims

An insert comprising a cutting portion for cutting the workpiece and a holder fastening portion fastened to the tool holder,

The holder fastening portion

A holder fastening surface for fastening to the tool holder; And

At least one holder connector formed on the holder fastening surface

Including,

The holder connector has a shape that becomes smaller or larger in width as it goes backward from the cutting portion.
In claim 1,

The holder connector has a recessed channel shape.
In claim 2,

The holder connector has a shape in which the recessed depth is gradually shallower or deeper toward the rear from the cutting portion.
In claim 3,

The holder connector has a shape in which the width becomes smaller as the depth is deeper.
The method according to any one of claims 1 to 4,

The at least one holder connector comprising first and second holder connectors, wherein the first and second holder connectors are sequentially formed rearward from the cut and spaced apart from each other.
A tool holder comprising an insert fastening for fastening a holder fastening of an insert,

The insert fastening portion

Insert fastening surface for fastening the holder fastening portion of the insert; And

One or more insert connectors formed on the insert fastening surface

Including,

The insert connector is a tool holder having a shape that becomes smaller or larger in width toward the rear end of the insert fastening portion.
In claim 6,

The insert connector has a protruding rail shape.
In claim 7,

The insert connector has a shape in which the protruding degree is longer or shorter toward the rear end of the insert fastening portion.
In claim 8,

The insert connector is a tool holder having a shape that becomes smaller as the protruding length is longer.
An insert and a tool holder assembly in which a tool holder including an insert including a cutting part and a holder fastening part and an insert fastening part into which the holder fastening part is inserted and fastened are assembled to each other,

The holder fastening portion

A holder fastening surface fastened to the tool holder; And

At least one holder connector formed on the holder fastening surface,

The insert fastening portion

An insert fastening surface to which the holder fastening surface is fastened; And

At least one insert connector formed on the insert fastening surface and connected to the at least one holder connector, respectively;

The holder connector has a shape in which the width becomes smaller or larger as the holder fastening portion is inserted in the direction,

The insert connector is an assembly of insert and tool holder having a shape that becomes smaller or larger in width to correspond to the holder connector.
In claim 10,

The holder connector has a recessed channel shape,

The insert connector is an assembly of insert and tool holder having a protruding rail shape.
In claim 11,

The holder connector has a shape in which the recessed depth becomes shallower or deeper toward the holder fastening portion is inserted,

The insert connector has an insert and a tool holder assembly having a shape in which the protruding degree becomes longer or shorter than the shape of the holder connector.
In claim 12,

The holder connector has a shape that becomes smaller as the depth deeper,

The insert connector is an assembly of the insert and the tool holder has a shape that becomes smaller as the protruding length is increased so as to correspond to the holder connector.
In claim 13.

And the insert connector and the holder connector are in surface contact with each other, but the parts contacted with the insert connector become larger or smaller in the direction in which the holder fastening portion is inserted.
The method of claim 14,

A first surface of the insert connector facing the holder connector is spaced apart from the holder connector,

Both edges of the first face contact the holder connector,

An assembly of insert and tool holder in which the width of the first surface becomes smaller or larger as the holder fastening portion is inserted in the direction of insertion.
The method of claim 15,

The longest vertical length between the first face and the holder connector is shorter or longer as the direction of the holder fastening is inserted.