JP5629186B2 - CUTTING TOOL COVER, CUTTING HOLDER AND CUTTING DEVICE - Google Patents

Description

  The present invention relates to a cutting tool cover, a cutting holder, and a cutting apparatus, and more particularly to a cutting tool cover, a cutting holder, and a cutting apparatus for cutting a surface of an FRP or the like.

  2. Description of the Related Art Conventionally, for example, a cutting device is known in which a suction port is provided in the axial center of a cutting tool, and cutting powder is sucked and collected from the suction port in order to collect cutting powder generated when, for example, metal is cut (for example, Patent Document 1). In recent years, fiber reinforced resin composites (FRP: Fiber Reinforced Plastics) may be cut. However, since the cutting powder is finer than metal, there is an adverse effect that the cutting powder is scattered around the cutting tool. there were. For this reason, the technique which provides the cover which prevents that cutting powder is scattered around the cutting tool is developed.

JP 2009-274147 A

By the way, at the time of cutting, the insert of the cutting tool and the workpiece to be cut are in contact with each other, but a gap needs to be formed between the cover and the workpiece. Due to this gap, there is a problem that even if a cover is provided, a small amount of cutting powder is eventually scattered around the cutting tool. In addition, the cutting heat generated during cutting is stored in the cutting tool body, promoting the temperature rise at the contact part between the insert cutting edge and the workpiece (FRP), and delamination (delamination) occurs in the FRP itself due to the effect. There was also a problem that sometimes it was allowed to.
Therefore, an object of the present invention is to prevent the cutting powder from being scattered. Another object of the present invention is to effectively cool the amount of heat stored in the tool body and suppress the temperature rise of the insert during cutting.

The invention described in claim 1
A communication port having a hollow shaft provided with a closing portion in the middle of one end side, and having at least one insert attached to one end surface of the shaft body and communicating with a hollow portion on the other end side of the closing portion Is provided on the side surface of the shaft body, and is a cover for a cutting tool that is set for a cutting tool that performs cutting by bringing the insert into contact with a workpiece while rotating the shaft body,
A main body fixed to the tip of the shaft and having one end face facing the surface of the workpiece;
An opening formed in the one end surface of the main body,
Possess a flow path portion communicating from the opening to the communication port of said cutting tool,
On the side surface of the shaft body, an auxiliary communication port that communicates with the hollow portion on the tip side of the closing portion is formed,
The main body portion has an auxiliary opening formed on a side surface of the main body portion, and an auxiliary flow path portion communicating from the auxiliary opening to the auxiliary communication port,
The auxiliary opening is characterized by being opened with the front side in the rotational direction of the shaft body facing .

The invention according to claim 2
A communication port having a hollow shaft provided with a closing portion in the middle of one end side, and having at least one insert attached to one end surface of the shaft body and communicating with a hollow portion on the other end side of the closing portion Is provided on the side surface of the shaft body, and is a cover for a cutting tool that is set for a cutting tool that performs cutting by bringing the insert into contact with a workpiece while rotating the shaft body,
A main body fixed to the tip of the shaft and having one end face facing the surface of the workpiece;
An opening formed in the one end surface of the main body,
A flow path portion communicating from the opening to the communication port of the cutting tool,
On the side surface of the shaft body, an auxiliary communication port that communicates with the hollow portion on the tip side of the closing portion is formed,
It said body portion, possess an auxiliary opening formed in the side surface of the main body portion, and an auxiliary flow path portion communicating from said auxiliary opening to said auxiliary communication port,
A duct is provided at a position corresponding to the auxiliary opening on the side surface of the main body, and a duct that opens the front side in the rotation direction of the shaft body is provided .

The cutting holder according to the invention of claim 3 is:
A communication port having a hollow shaft provided with a closing portion in the middle of one end side, and having at least one insert attached to one end surface of the shaft body and communicating with a hollow portion on the other end side of the closing portion Is provided on a side surface of the shaft body, and a cutting tool that performs cutting by bringing the insert into contact with a workpiece while rotating the shaft body,
A cutting tool cover set for the cutting tool;
The cutting tool cover is
A main body fixed to the tip of the shaft and having one end face facing the surface of the workpiece;
An opening formed in the one end surface of the main body,
A cutting holder comprising a flow path portion communicating from the opening to a communication port of the cutting tool .

Invention of Claim 4 is the holder for cutting of Claim 3 ,
On the side surface of the shaft body, an auxiliary communication port that communicates with the hollow portion on the tip side of the closing portion is formed,
It said body portion, possess an auxiliary opening formed in the side surface of the main body portion, and an auxiliary flow path portion communicating from said auxiliary opening to said auxiliary communication port,
The auxiliary opening is characterized by being opened with the front side in the rotational direction of the shaft body facing .

The invention according to claim 5 is the cutting holder according to claim 4 ,
On the side surface of the shaft body, an auxiliary communication port that communicates with the hollow portion on the tip side of the closing portion is formed,
The main body portion has an auxiliary opening formed on a side surface of the main body portion, and an auxiliary flow path portion communicating from the auxiliary opening to the auxiliary communication port,
A duct is provided at a position corresponding to the auxiliary opening on the side surface of the main body, and a duct that opens the front side in the rotation direction of the shaft body is provided.

A cutting device according to the invention of claim 6 is provided.
A communication port having a hollow shaft provided with a closing portion in the middle of one end side, and having at least one insert attached to one end surface of the shaft body and communicating with a hollow portion on the other end side of the closing portion Is provided on a side surface of the shaft body, and a cutting tool that performs cutting by bringing the insert into contact with a workpiece while rotating the shaft body,
A cutting tool cover set for the cutting tool;
A suction part that sucks the cutting powder generated by the cutting of the cutting tool through the hollow portion of the cutting tool;
The cutting tool cover is
A main body fixed to the tip of the shaft and having one end face facing the surface of the workpiece;
An opening formed in the one end surface of the main body,
And a flow path portion communicating from the opening to the communication port of the cutting tool.

The invention according to claim 7 is the cutting apparatus according to claim 6 ,
On the side surface of the shaft body, an auxiliary communication port that communicates with the hollow portion on the tip side of the closing portion is formed,
It said body portion, possess an auxiliary opening formed in the side surface of the main body portion, and an auxiliary flow path portion communicating from said auxiliary opening to said auxiliary communication port,
The auxiliary opening is opened with the front side in the rotation direction of the shaft body opened .

The invention according to claim 8 is the cutting device according to claim 6 ,
On the side surface of the shaft body, an auxiliary communication port that communicates with the hollow portion on the tip side of the closing portion is formed,
The main body portion has an auxiliary opening formed on a side surface of the main body portion, and an auxiliary flow path portion communicating from the auxiliary opening to the auxiliary communication port,
A duct is provided at a position corresponding to the auxiliary opening on the side surface of the main body, and a duct that opens the front side in the rotation direction of the shaft body is provided.

According to the present invention, since the flow channel portion that communicates from the opening of the cutting tool cover to the communication port of the cutting tool is formed, when suction is performed from the hollow portion of the cutting tool, the opening, the flow channel portion, and the communication are formed. Suction is performed through the mouth. And since the opening of a flow-path part is arrange | positioned on the outer side of an insert, the cutting powder discharged | emitted from the cutting edge of the insert to the outer peripheral side by centrifugal force can be capture | acquired by an opening. Therefore, it is possible to prevent the cutting powder from being scattered.
In addition, since the communication port is formed inside the cutting tool and the flow path portion is formed inside the cutting tool cover, the amount of heat stored in the tool body can be effectively cooled. Thereby, it becomes possible to suppress the temperature rise of the insert at the time of cutting.

It is a perspective view showing a schematic structure of a cutting device concerning this embodiment. It is a perspective view which shows the one part schematic structure of the cutting holder which concerns on this embodiment. It is a front view which shows schematic structure of the cutting tool concerning this embodiment. It is an end view which shows schematic structure of the cutting tool concerning this embodiment. It is the other end side view showing the schematic structure of the cutting tool according to the present embodiment. It is a front view which shows schematic structure of the cover for cutting tools concerning this embodiment. It is sectional drawing seen from the VII-VII cutting line in FIG. It is an end elevation which shows the state in which the cover for cutting tools of FIG. 7 was set to the cutting tool. It is explanatory drawing which shows typically the relationship between the holder for cutting and the workpiece | work at the time of cutting. It is explanatory drawing which shows typically the modification of the cover for cutting tools shown in FIG. It is sectional drawing which shows the modification of the cover for cutting tools shown in FIG. It is explanatory drawing which shows typically the modification of the cover for cutting tools shown in FIG.

  The best mode for carrying out the present invention will be described below with reference to the drawings. However, although various technically preferable limitations for implementing the present invention are given to the embodiments described below, the scope of the invention is not limited to the following embodiments and illustrated examples.

  FIG. 1 is a perspective view showing a schematic configuration of a cutting apparatus according to the present embodiment. As shown in FIG. 1, the cutting device 1 is supported by a bed 2, a column 3 erected on the back of the bed 2, and a front surface of the column 3 movably in the vertical direction (Z-axis direction). A spindle head 4, a saddle 5 supported on the front portion of the bed 2 so as to be movable in the front-rear direction (Y-axis direction), and a table supported on the saddle 5 so as to be movable in the left-right direction (X-axis direction). 6 is provided. On the table 6, for example, a workpiece W that is a workpiece formed of FRP or the like is placed.

  A spindle 7 is rotatably supported in the spindle head 4, and the spindle 7 is rotationally driven by a drive motor (not shown) built in the spindle head 4. A detachable cutting holder 10 is attached to the lower end portion of the main shaft 7. Further, a pipe 8 communicating with the cutting holder 10 is provided at the upper part of the spindle head 4. The other end portion of the pipe 8 is connected to a suction portion 9 that sucks the cutting powder generated by the cutting holder 10.

Next, the cutting holder 10 will be described in detail.
FIG. 2 is a perspective view showing a schematic configuration of a part of the cutting holder 10. As shown in FIG. 2, the cutting holder 10 includes a cutting tool 11 for cutting the workpiece W and a cutting tool cover 12 set with respect to the cutting tool 11.

  3-5 is explanatory drawing which shows schematic structure of the cutting tool 11, FIG. 3 is a front view, FIG. 4 is an end elevation, FIG. 5 is an other end elevation. As shown in FIGS. 3 to 5, the cutting tool 11 is provided with a shaft body 111, and an insert 112 and an auxiliary block 113 provided on the front end surface of the shaft body 111. In the present embodiment, the case where four sets of inserts 112 and auxiliary blocks 113 are provided will be described as an example, but any number of sets of inserts 112 and auxiliary blocks 113 may be provided.

The shaft body 111 includes a fixed shaft 114 fixed to the spindle head 4 and an insert fixing portion 115 provided on the distal end side of the fixed shaft 114. The shaft body 111 is provided with a hollow portion 116 formed on the shaft core over the entire length. The end of the hollow portion 116 on the insert fixing portion 115 side is open, and the end of the hollow portion 116 on the fixing shaft 114 side is connected to the pipe 8. That is, the hollow portion 116 communicates with the suction portion 9 via the pipe 8.
A communication port 111 a that communicates with the hollow portion 116 is formed on the side surface of the shaft body 111. The four communication ports 111a are formed radially from the shaft core at equal intervals, and all are formed along a plane orthogonal to the shaft core. Note that a closing portion 15 that closes the hollow portion 116 is provided on the distal end side of the communication portion 111 a in the hollow portion 116. It should be noted that the hollow portion 116 is open on the tip side of the closing portion 15. In the following description, the proximal end side of the hollow portion 116 relative to the closing portion 15 is referred to as a first hollow portion 116a, and the distal end side of the hollow portion 116 relative to the closing portion 15 is referred to as a second hollow portion 116b.

  A fixing hole 117 for fixing the cutting tool cover 12 is formed on the outer periphery of the fixed shaft 114 on the tip end side. In addition, an insert mounting seat 118 for mounting the insert 112 and a block housing recess 119 for housing the auxiliary block 113 are formed at the distal end portion of the insert fixing portion 115. The insert mounting seats 118 are respectively arranged on straight lines that divide the tip end surface of the insert fixing portion 115 into four parts. The block accommodating recess 119 is disposed on the front side in the rotational direction of each insert mounting seat 118.

The insert 112 accommodated in the insert mounting seat 118 is disposed so that one side surface 112a thereof is substantially parallel to a surface orthogonal to the rotation direction and faces the front side in the rotation direction. The insert 112 accommodated in the insert mounting seat 118 protrudes from the tip of the insert fixing portion 115 toward the front so that the tip of the insert 112 contacts the workpiece W. That is, when the insert 112 rotates to cut the workpiece W, cutting powder accumulates on one side surface 112a of the insert 112.
On the other hand, the auxiliary block 113 accommodated in the block accommodating recess 119 and the insert fixing portion 115 are formed with flow paths 120 (shaded portions in FIG. 4) for guiding air from the outer periphery to the hollow portion 116. ing. The flow path 120 guides air so as to pass over the one side surface 112 a of the insert 112.

  Further, an auxiliary communication port 16 communicating with the second hollow portion 116b of the insert fixing portion 115 is formed. Two auxiliary communication ports 16 are formed so as to be arranged along the diameter direction. The two auxiliary communication ports 16 are both formed along a plane orthogonal to the axis. The auxiliary communication port 16 is formed at a position shifted from the communication port 111a (see FIG. 5).

  6 and 7 are explanatory views showing a schematic configuration of the cutting tool cover 12, FIG. 6 is a front view, and FIG. 7 is a sectional view taken along the line VII-VII in FIG.

  The main body 121 of the cutting tool cover 12 is formed in a substantially cylindrical shape from metal. The main body 121 is fixed to the shaft body 111 of the cutting tool 11 and covers the insert fixing portion 115 that is the tip of the shaft body 111. When fixed to the shaft body 111, the one end surface 121 a of the main body 121 faces the surface of the workpiece W. An engaging portion 123 (see FIG. 2) for engaging with the fixing hole 117 of the fixed shaft 114 is formed on the base end portion side of the main body portion 121. The cutting tool cover 12 is attached to the cutting tool 11 by overlapping the engaging portion 123 and the fixing hole 117 and screwing a screw (not shown) into the fixing hole 117.

The inside of the main body 121 has a small diameter portion 125 on the base end side, and a large diameter portion 126 having a larger inner diameter than the small diameter portion on the distal end side. A fixed shaft 114 of the cutting tool 11 is accommodated in the small diameter portion 125, and an insert fixing portion 115 of the cutting tool 11 is accommodated in the large diameter portion 126.
In addition, four openings 127 are formed in one end surface 121 a of the main body 121. FIG. 8 is an end view showing a state in which the cutting tool cover 12 is set on the cutting tool 11. As shown in FIG. 8, each of the four openings 127 is formed at a position facing each insert 112. Specifically, each opening 127 faces the insert 112, but is formed at a position shifted to the upstream side in the rotational direction with respect to the insert 112.

  In addition, as shown in FIG. 6, each opening 127 and the inner surface of the small diameter portion 125 are communicated with each other through four flow path portions 128. The flow path portion 128 has a first flow path 128a extending inward from the opening 127 in parallel to the axis, and from the back end of the first flow path 128a to the inner surface of the small diameter portion 125 with respect to the axis. And a second flow path 128b formed along a plane orthogonal to each other. The inner surface side end portion of the second flow path 128b communicates with the communication port 111a of the cutting tool 11 when the cutting tool cover 12 is set on the cutting tool 11.

The main body 121 is provided with an auxiliary opening 17 formed on the outer surface of the main body 121 and an auxiliary flow path 18 that communicates from the auxiliary opening 17 to the auxiliary communication port 16. The auxiliary flow path portion 18 is formed from the auxiliary opening 17 to the inner surface of the large diameter portion 126 along a plane orthogonal to the axis. The end portion on the inner surface side of the auxiliary flow path portion 18 communicates with the auxiliary communication port 16 of the cutting tool 11 when the cutting tool cover 12 is set on the cutting tool 11.
In addition, a recess 19 is formed at a position corresponding to the auxiliary opening 17 on the side surface of the main body 121. The concave portion 19 is an inclined surface in which the surface of the downstream half in the rotational direction is gradually outward toward the downstream side. Further, the upstream surface of the recess 19 is an inclined surface that gradually becomes outward toward the upstream side. An auxiliary opening 17 is formed on the surface of the upstream half. As described above, when the auxiliary opening 17 is opened toward the front side in the rotation direction of the shaft body 111, air is taken into the auxiliary opening 17 as the cutting holder 10 rotates, and the auxiliary flow path portion. Inward airflow is generated at 18 and the auxiliary communication port 16.

Next, the operation of this embodiment will be described.
First, before cutting, the suction unit 9 is driven to suck air from the tip of the hollow portion 116, and cutting is started in a state where suction is maintained.
FIG. 9 is an explanatory view schematically showing the relationship between the cutting holder 10 and the workpiece W during cutting. In FIG. 9, the right half of the cutting holder 10 shows the internal shape. As shown in FIG. 9, the cutting process is performed by horizontal feed milling (planar process). At this time, a clearance is provided between the surface of the workpiece W and the cutting tool cover 12. When suction is performed by the suction part 9, an air flow is generated not only in the hollow part 116 but also in the flow path part 128. In FIG. 9, the arrow Y1 represents the airflow in the hollow portion 116, and the arrow Y2 represents the airflow in the flow path portion 128 and the communication port 111a. Further, as the cutting holder 10 is rotated, air is taken into the auxiliary opening 17, and an inward airflow is generated in the auxiliary flow path portion 18 and the auxiliary communication port 16. An air flow directed downward is also generated in the hollow portion 116b (arrow Y3 in FIG. 9). The airflow discharged from the second hollow portion 116b toward the workpiece W passes through the clearance and travels outward (arrow Y4 in FIG. 9). Although the cutting powder is forcibly discharged toward the outside by this air flow, the cutting powder is sucked through the opening 127, the flow path portion 128, and the communication port 111a, and reaches the first hollow portion 116a.

As described above, according to the present embodiment, the flow path portion 128 that communicates from the opening 127 of the cutting tool cover 12 to the communication port 111a of the cutting tool 11 is formed. The communication port 111 a communicates with the hollow portion 116 of the cutting tool 11. For this reason, when suction is performed through the hollow portion 116 of the cutting tool 11, suction is performed not only from the hollow portion 116 but also through the opening 127, the flow path portion 128, and the communication port 111a. Since the opening 127 of the flow path portion 128 is disposed outside the insert 112, the cutting powder discharged from the cutting edge of the insert 112 to the outer peripheral side can be captured by the opening 127. Therefore, it is possible to prevent the cutting powder from being scattered.
Further, since the auxiliary communication port 16, the auxiliary flow path portion 18, and the auxiliary opening 17 communicating with the second hollow portion 116b are formed, when air is taken in from the auxiliary opening 17 with rotation, the auxiliary opening 17 To the auxiliary flow path portion 18, the auxiliary communication port 16, the second hollow portion 116b, and the workpiece W can be generated. And since this airflow passes the insert 112 from the inner side and reaches the opening 127, the cutting powder is smoothly guided to the opening 127, and the capturing of the cutting powder becomes more efficient.

  In addition, the communication port 111a and the auxiliary communication port 16 are formed inside the cutting tool 11, and the flow path part 128 and the auxiliary flow path part 18 are formed inside the cutting tool cover 12, so The amount of stored heat can be effectively cooled. Thereby, it becomes possible to suppress the temperature rise of the insert 112 at the time of cutting.

  And since the auxiliary opening 17 is open | released toward the front side of the rotation direction of the shaft 111, air can be taken in in the auxiliary opening 17 with rotation.

  Moreover, since each of the four openings 127 is formed at a position facing each insert 112, the cutting powder discharged from the cutting edge of the insert 112 can be reliably captured. In particular, in the present embodiment, each opening 127 is arranged at a position shifted to the upstream side in the rotation direction with respect to the insert 112, so that the opening 127 is arranged on the track of the discharged cutting powder by the rotation. Therefore, cutting powder can be captured more reliably.

Note that the present invention is not limited to the above embodiment, and can be modified as appropriate. In the following description, the same parts as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted.
For example, in the above-described embodiment, the case where the second flow path 128b and the communication port 111a are formed in parallel to a plane orthogonal to the axial center is illustrated. However, as illustrated in FIG. The second flow path 128c and the communication port 111c may be formed so that the angle formed by the flow path 128c is greater than 90 degrees. In this case, since the corners of the first flow path 128a and the second flow path 128c are obtuse, it is possible to prevent the sucked cutting powder from staying at the corners. In addition, if the corners are formed so as to be smoothly curved, the flow of cutting powder can be made smoother.

Moreover, in the said embodiment, although the auxiliary opening 17 open | released toward the front side of the rotation direction was formed by the recessed part 19, as shown in FIG. 11, the auxiliary | assistant in the side surface of the main-body part 121 of the cover 12 for cutting tools is shown. The duct 20 may be provided at a position corresponding to the opening 17d. Since the opening 21 of the duct 20 is opened on the front side in the rotation direction of the shaft body 111, air can be taken into the auxiliary opening 17d with the rotation also in this case.
Furthermore, when the concave portion 19 and the duct 20 are combined, more air can be taken into the auxiliary openings 17 and 17d.

Further, as shown in FIG. 12, even if the auxiliary opening 17, the auxiliary flow path portion 18, and the auxiliary communication port 16 are omitted, the opening 127 of the flow path portion 128 is disposed outside the insert 112. Cutting powder discharged to the outside from 112 can be captured by the opening 127.
In this case, since the cutting powder accumulates in the second hollow portion 116b simply by omitting the auxiliary opening 17, the auxiliary flow path portion 18 and the auxiliary communication port 16, the entire distal end portion of the hollow portion 116 is closed. It is preferable to close with 15e.

DESCRIPTION OF SYMBOLS 1 Cutting device 2 Bed 3 Column 4 Spindle head 5 Saddle 6 Table 7 Spindle 8 Piping 9 Suction part 10 Cutting holder 11 Cutting tool 12 Cutting tool cover 15 Closure part 16 Auxiliary communication port 17 Auxiliary opening 18 Auxiliary flow path part 19 Concave part 20 Duct 21 Opening 111 Shaft body 111a Communication port 112 Insert 112a One side surface 113 Auxiliary block 114 Fixed shaft 115 Insert fixing portion 116 Hollow portion 116a First hollow portion 116b Second hollow portion 117 Fixing hole 118 Insert mounting seat 119 Block receiving recess 120 Channel 121 Main Body 121a One End Surface 123 Engaging Portion 125 Small Diameter Portion 126 Large Diameter Portion 127 Opening 128 Channel Portion 128a First Channel 128b Second Channel W Workpiece

Claims (8)

A communication port having a hollow shaft provided with a closing portion in the middle of one end side, and having at least one insert attached to one end surface of the shaft body and communicating with a hollow portion on the other end side of the closing portion Is provided on the side surface of the shaft body, and is a cover for a cutting tool that is set for a cutting tool that performs cutting by bringing the insert into contact with a workpiece while rotating the shaft body,
A main body fixed to the tip of the shaft and having one end face facing the surface of the workpiece;
An opening formed in the one end surface of the main body,
Possess a flow path portion communicating from the opening to the communication port of said cutting tool,
On the side surface of the shaft body, an auxiliary communication port that communicates with the hollow portion on the tip side of the closing portion is formed,
The main body portion has an auxiliary opening formed on a side surface of the main body portion, and an auxiliary flow path portion communicating from the auxiliary opening to the auxiliary communication port,
The cover for a cutting tool , wherein the auxiliary opening is opened with the front side in the rotation direction of the shaft body . A communication port having a hollow shaft provided with a closing portion in the middle of one end side, and having at least one insert attached to one end surface of the shaft body and communicating with a hollow portion on the other end side of the closing portion Is provided on the side surface of the shaft body, and is a cover for a cutting tool that is set for a cutting tool that performs cutting by bringing the insert into contact with a workpiece while rotating the shaft body,
A main body fixed to the tip of the shaft and having one end face facing the surface of the workpiece;
An opening formed in the one end surface of the main body,
A flow path portion communicating from the opening to the communication port of the cutting tool,
On the side surface of the shaft body, an auxiliary communication port that communicates with the hollow portion on the tip side of the closing portion is formed,
It said body portion, possess an auxiliary opening formed in the side surface of the main body portion, and an auxiliary flow path portion communicating from said auxiliary opening to said auxiliary communication port,
A cover for a cutting tool , wherein a duct is provided at a position corresponding to the auxiliary opening on a side surface of the main body, and a duct that opens a front side in a rotation direction of the shaft body is provided . A communication port having a hollow shaft provided with a closing portion in the middle of one end side, and having at least one insert attached to one end surface of the shaft body and communicating with a hollow portion on the other end side of the closing portion Is provided on a side surface of the shaft body, and a cutting tool that performs cutting by bringing the insert into contact with a workpiece while rotating the shaft body,
A cutting tool cover set for the cutting tool;
The cutting tool cover is
A main body fixed to the tip of the shaft and having one end face facing the surface of the workpiece;
An opening formed in the one end surface of the main body,
A cutting holder comprising a flow path portion communicating from the opening to a communication port of the cutting tool. The cutting holder according to claim 3 ,
On the side surface of the shaft body, an auxiliary communication port that communicates with the hollow portion on the tip side of the closing portion is formed,
The main body portion has an auxiliary opening formed on a side surface of the main body portion, and an auxiliary flow path portion communicating from the auxiliary opening to the auxiliary communication port,
The auxiliary holder is opened with the front side in the rotational direction of the shaft body opened . The cutting holder according to claim 4 , wherein
On the side surface of the shaft body, an auxiliary communication port that communicates with the hollow portion on the tip side of the closing portion is formed,
The main body portion has an auxiliary opening formed on a side surface of the main body portion, and an auxiliary flow path portion communicating from the auxiliary opening to the auxiliary communication port,
A cutting holder, wherein a duct is provided at a position corresponding to the auxiliary opening on a side surface of the main body, and a duct that opens the front side in the rotation direction of the shaft body is provided. A communication port having a hollow shaft provided with a closing portion in the middle of one end side, and having at least one insert attached to one end surface of the shaft body and communicating with a hollow portion on the other end side of the closing portion Is provided on a side surface of the shaft body, and a cutting tool that performs cutting by bringing the insert into contact with a workpiece while rotating the shaft body,
A cutting tool cover set for the cutting tool;
A suction part that sucks the cutting powder generated by the cutting of the cutting tool through the hollow portion of the cutting tool;
The cutting tool cover is
A main body fixed to the tip of the shaft and having one end face facing the surface of the workpiece;
An opening formed in the one end surface of the main body,
A cutting device comprising: a flow path portion communicating from the opening to a communication port of the cutting tool. The cutting device according to claim 6 , wherein
On the side surface of the shaft body, an auxiliary communication port that communicates with the hollow portion on the tip side of the closing portion is formed,
It said body portion, possess an auxiliary opening formed in the side surface of the main body portion, and an auxiliary flow path portion communicating from said auxiliary opening to said auxiliary communication port,
The auxiliary opening is opened with the front side in the rotation direction of the shaft body opened . The cutting device according to claim 6 , wherein
On the side surface of the shaft body, an auxiliary communication port that communicates with the hollow portion on the tip side of the closing portion is formed,
The main body portion has an auxiliary opening formed on a side surface of the main body portion, and an auxiliary flow path portion communicating from the auxiliary opening to the auxiliary communication port,
A cutting apparatus, wherein a duct is provided at a position corresponding to the auxiliary opening on the side surface of the main body, the duct opening the front side in the rotational direction of the shaft body.

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