JP7368064B2 - Manufacturing method for machine tools and cutting products - Google Patents

Description

This aspect relates to a machine tool used in cutting. Specifically, it relates to a machine tool used for turning processing such as grooving.

For example, Patent Document 1 describes a cutting tool (machine tool) that can make grooves. The machine tool described in Patent Document 1 includes a tool holder and a holder blade. The holder blade has an elongated basic shape and two flat, parallel sides, and is provided with a hole (through hole) passing through between the two sides. The tool holder also has a base body and a support body with a recessed slot on the front side remote from the base body. The holder blade is then fixed in place within the slot of the support by a stopper member having a screw extending through the through hole in the holder blade and tightened into the screw hole opening at the bottom of the slot. .

JP2014-94446A

One of the problems of this aspect is to provide a machine tool that can stably fix a cutting tool in a pocket.

A machine tool according to one embodiment includes a clamp member, a cutting tool, a first screw, and a second screw. The clamp member has a column shape extending from the first end to the second end. The cutting tool has a plate shape extending from the third end to the fourth end. The cutting tool has a first side, a second side, and a through hole. The second side is located opposite the first side. The through-hole opens on each of the first side surface and the second side surface. The clamp member has an upper jaw and a lower jaw, a pocket, a first screw hole, and a second screw hole. The upper and lower jaws are located apart from each other. The pocket is located between the upper and lower jaws and in which the cutting tool is located. The first screw hole passes through the upper jaw toward the lower jaw. The second screw hole opens into the pocket so as to be exposed from the through hole. A first screw is inserted into the first screw hole, and a second screw is inserted into the through hole and the second screw hole.

According to the machine tool of the above aspect, it is possible to stably fix the cutting tool in the pocket.

It is a perspective view showing a machine tool of an embodiment. FIG. 2 is a plan view of the machine tool shown in FIG. 1 viewed from the upper jaw side. FIG. 2 is a plan view of the machine tool shown in FIG. 1 viewed from the first end (third end) side. FIG. 2 is a plan view of the machine tool shown in FIG. 1 viewed from the first side. FIG. 2 is a perspective view of a clamp member in the machine tool shown in FIG. 1. FIG. FIG. 6 is a plan view of the clamp member shown in FIG. 5 when viewed from the upper jaw side. FIG. 6 is a plan view of the clamp member shown in FIG. 5 when viewed from the first end side. FIG. 6 is a plan view of the clamp member shown in FIG. 5 viewed from the pocket side. FIG. 2 is a perspective view of a cutting tool in the machine tool shown in FIG. 1. FIG. 10 is an enlarged view of area A1 shown in FIG. 9. FIG. It is a schematic diagram showing one process of a manufacturing method of a cutting workpiece of an embodiment. It is a schematic diagram showing one process of a manufacturing method of a cutting workpiece of an embodiment. It is a schematic diagram showing one process of a manufacturing method of a cutting workpiece of an embodiment. It is a schematic diagram showing one process of a manufacturing method of a cutting workpiece of an embodiment.

<Machine tools>
Hereinafter, the machine tool 301 of the embodiment will be described in detail using the drawings. However, for convenience of explanation, each figure referred to below shows only the main members necessary for explaining the embodiment in a simplified manner. Therefore, the machine tool 301 may include any component not shown in each referenced figure. Furthermore, the dimensions of the members in each figure do not faithfully represent the dimensions of the actual constituent members or the dimensional ratios of each member.

The machine tool 301 may include a clamp member 1, a cutting tool 101, a first screw 201, and a second screw 203, as in the example shown in FIGS. 1 to 4.

The clamp member 1 may have a columnar shape extending from the first end 1a to the second end 1b, as shown in the examples shown in FIGS. 5 to 8. Further, the clamp member 1 may include an upper jaw 3, a lower jaw 5, and a pocket 7. The upper jaw 3 and the lower jaw 5 may be located apart from each other. Pocket 7 may be located between upper jaw 3 and lower jaw 5. Note that the upper jaw 3 and the lower jaw 5 are expressions for convenience and do not indicate upward or downward direction. For example, the upper jaw 3 does not have to face upwards when using the clamping member 1.

In the example shown in FIG. 5, the lower right end is the first end 1a, and the upper left end is the second end 1b. Generally, the first end 1a is also called a tip, and the second end 1b is also called a rear end. Further, the example clamp member 1 shown in FIG. 5 has a prismatic shape extending from the first end 1a to the second end 1b. Note that the shape of the clamp member 1 is not limited to a prismatic shape.

The clamp member 1 is not limited to a particular size. For example, when the upper jaw 3 is viewed from the front, the length of the clamp member 1 in the extending direction of the clamp member 1 may be set to about 40 to 100 mm, and the length of the clamp member 1 may be set to about 40 to 100 mm, and The length of the clamp member 1 in this direction may be set to about 10 to 20 mm. The height of the clamp member 1, indicated by the distance between the upper end of the upper jaw 3 and the lower end of the lower jaw 5, may be set to about 30 to 60 mm.

The upper jaw 3 and the lower jaw 5 can abut (contact) the cutting tool 101 when the cutting tool 101 is attached to the clamp member 1, and can sandwich the cutting tool 101 therebetween. The upper jaw 3 and the lower jaw 5 may each extend from the first end 1a to the second end 1b. Furthermore, a cutting tool 101 can be positioned within the pocket 7. Therefore, by positioning the cutting tool 101 in the pocket 7 and bringing the upper jaw 3 and the lower jaw 5 into contact with the cutting tool 101, it is possible to grip the cutting tool 101 with the clamp member 1.

The clamp member 1 may have a first screw hole 25. The first screw hole 25 may penetrate through the upper jaw 3 toward the lower jaw 5 . The first screw 201 can be inserted into the first screw hole 25 . The clamping force can be adjusted by tightening the first screw 201 inserted into the first screw hole 25. The first screw hole 25 in the example shown in FIG. 5 is located from the upper jaw 3 to the lower jaw 5. Note that the clamp member 1 may have a plurality of first screw holes 25.

The clamp member 1 may have a second screw hole 27. The second screw hole 27 is opened in the pocket 7 so as to be exposed from the through hole 107 that opens in the first side surface 103 and the second side surface 105 located on the opposite side of the first side surface 103 in the plate-shaped cutting tool 101. You may. The second screw 203 can be inserted into the second screw hole 27 . The cutting tool 101 can be fixed in the pocket 7 by tightening the second screw 203 inserted into the through hole 107 and the second screw hole 27.

In the example shown in FIG. 4, the first central axis O1 of the first screw 201 is inclined with respect to the second central axis O2 of the second screw 203 in a side view from the first side surface 103 side. In this way, when the first central axis O1 is inclined with respect to the second central axis O2, it is possible to fix the cutting tool 101 to the clamp member 1 from two directions.

The cutting tool 101 may have a plate shape extending from the third end 101a to the fourth end 101b, as shown in the example shown in FIGS. 9 and 10. The cutting tool 101 may have a first side surface 103, a second side surface 105, and a through hole 107. The first side surface 103 and the second side surface 105 correspond to two surfaces occupying a relatively large area of the plate-shaped cutting tool 101. The second side 105 may be located on the opposite side of the first side 103. At this time, the second side surface 105 may be located parallel to the first side surface 103, as in the example shown in FIG.

The through hole 107 may be opened on the first side surface 103 and the second side surface 105, respectively. The extending direction of the through hole 107 may be inclined with respect to the first side surface 103 and the second side surface 105, and as in the example shown in FIG. They may be orthogonal. The second screw 203 can be inserted into the through hole 107 .

In the example shown in FIG. 9, the lower right end is the third end 101a, and the upper left end is the fourth end 101b. In the example shown in FIG. 9, the first side surface 103 and the second side surface 105 are each square (rectangular) and extend from the third end 101a side toward the fourth end 101b side.

As in the example shown in FIGS. 1 and 5, the direction in which the clamp member 1 extends, that is, the direction from the first end 1a to the second end 1b, is the direction in which the cutting tool 101 extends, that is, the third end 101a. It may coincide with the direction from the direction toward the fourth end 101b.

The cutting tool 101 may be located within the pocket 7. In other words, the cutting tool 101 may be sandwiched between the upper jaw 3 and the lower jaw 5. The cutting tool 101 is mounted so that at least a portion of the portion used as a cutting edge protrudes outward from the clamp member 1. Specifically, as in the example shown in FIG. 1, at least a part of the portion of the cutting tool 101 used as the cutting edge is located farther from the second end 101b than the first end 101a of the clamp member 1. Good too.

Cutting tool 101 is not limited to a particular size. For example, when the cutting tool 101 located in the pocket 7 is viewed from the front from the side of the upper jaw 3, the length of the cutting tool 101 in the direction in which the cutting tool 101 extends may be set to about 80 to 160 mm. Furthermore, the length of the cutting tool 101 in the direction perpendicular to the direction in which the cutting tool 101 extends may be set to about 1 to 10 mm. The height of the cutting tool 101 in the direction from the upper jaw 3 to the lower jaw 5 may be set to about 15 to 35 mm.

Here, the first screw 201 may be inserted into the first screw hole 25 of the clamp member 1. The second screw 203 may be inserted into the through hole 107 and the second screw hole 27 of the clamp member 1. In these cases, it is possible to stably fix the cutting tool 101 within the pocket 7. That is, by fixing with the first screw 201, the main force applied to the cutting tool 101 during cutting can be easily received.

Further, when the second central axis O2 is inclined with respect to the first central axis O1, it is possible to fix the cutting tool 101 to the clamp member 1 from two directions, and the above principal component force is The cutting load applied in the orthogonal direction can be easily received at the second central axis O2. Further, when the cutting tool 101 has a plate shape as shown in the example shown in FIGS. 9 and 10, the cutting tool 101 is not easily bent during cutting due to the fixation by the second screw 203. Therefore, the cutting tool 101 can be stably fixed in the pocket 7.

As shown in the example shown in FIG. 4, in a side view from the first side surface 103, a virtual line X extending the first central axis O1 of the first screw 201 toward the lower jaw 5 is 2 does not have to intersect with the central axis O2. In this case, the space for the first screw hole 25 and the second screw hole 27 can be easily secured.

In a side view from the first side surface 103 side, the second central axis O2 may be located closer to the third end 101a than the virtual line X. In this case, the cutting tool 101 is less likely to bend during cutting.

As shown in the example shown in FIG. 3, when viewed from the front from the side of the third end 101a, the virtual line X extending from the first central axis O1 of the first screw 201 toward the lower jaw 5 is 2 may intersect with the central axis O2. In this case, the contact between the blade and the tool block tends to be uniform, and vibration of the blade can be easily suppressed. Moreover, it is possible to fix the cutting tool 101 to the clamp member 1 from two directions. In a front view from the third end 101a side, the virtual line X may be perpendicular to the second central axis O2. In this case, it is possible to stably fix the cutting tool 101 to the clamp member 1.

The machine tool 301 may have a plurality of first screws 201. The clamp member 1 may have a plurality of first screw holes 25 as described above. At least one of the plurality of first screw holes 25 may be located closer to the second end 1b than the second screw hole 27 is. At least one of the plurality of first screws 201 may be inserted into the first screw hole 25 located closer to the second end 1b than the second screw hole 27. In these cases, the main force applied to the cutting tool 101 during cutting can be easily absorbed.

As in the example shown in FIG. 9, the through hole 107 may be located closer to the third end 101a than the center 101c of the cutting tool 101 in the extending direction of the cutting tool 101. In this case, the through hole 107 is located near the cutting edge where cutting load is applied during cutting. Along with this, since the fixation by the second screw 203 is also located near the cutting edge, the cutting tool 101 is less likely to bend during cutting.

The second screw 203 may be separated from the inner wall surface 107a of the through hole 107. In this case, the amount of protrusion of the blade can be adjusted. Furthermore, a cutting load such as a principal component force from a direction perpendicular to the second central axis O2 is difficult to be transmitted from the inner wall surface 107a to the second screw 203. Therefore, the second screw 203 has high durability.

The through hole 107 may extend along the direction in which the cutting tool 101 extends in a side view from the first side surface 103 side. In other words, the through hole 107 may have a slit shape. In this case, the amount of protrusion of the cutting tool 101 can be adjusted.

Examples of the material of the upper jaw 3 in the clamp member 1 include elastic members such as rubber, resin, steel, and cast iron. Examples of the material for the lower jaw 5 include steel and cast iron. Note that the materials of the upper jaw 3 and the lower jaw 5 are not limited to those illustrated.

The upper jaw 3 may include a first member 9 and a second member 11, as in the example shown in FIGS. 5 to 8. The second member 11 may be located closer to the first end 1a than the first member 9 is. At least a portion of the second member 11 may be located closer to the first end 1a than the first member 9 is. In the example shown in FIG. 6, when the clamp member 1 is viewed from the front from the side of the upper jaw 3, the second member 11 is located closer to the first end 1a than the first member 9.

Here, the hardness of the first member 9 is referred to as a first hardness, and the hardness of the second member 11 is referred to as a second hardness. At this time, the first hardness may be different from the second hardness. In this case, the hardness of the upper jaw 3 in the direction in which the clamp member 1 extends can be adjusted by the first member 9 and the second member 11 having different hardnesses. For example, the hardness of the upper jaw 3 can be adjusted depending on the shape of the cutting tool 101, processing conditions, and the like. Therefore, the cutting tool 101 can be stably held by the clamp member 1.

The first hardness may be higher than the second hardness, or may be lower than the second hardness. For example, when the material of the first member 9 is rubber and the material of the second member 11 is steel, the first hardness is lower than the second hardness. When the first hardness is lower than the second hardness, vibration of the blade during cutting can be suppressed. Moreover, it is easier to hold the cutting tool more stably with the clamp member 1.

The clamp member 1 may further include a third member 13. The third member 13 may be located closer to the second end 1b than the first member 9. At least a portion of the third member 13 may be located closer to the second end 1b than the first member 9 is. In the example shown in FIG. 6, when the clamp member 1 is viewed from the front from the upper jaw 3 side, the third member 13 is located closer to the second end 1b than the first member 9.

Here, the hardness of the third member 13 is referred to as third hardness. At this time, the first hardness may be different from the third hardness. In this case, there is a high degree of freedom in adjusting the hardness of the upper jaw 3.

The first hardness may be higher than the third hardness or lower than the third hardness. For example, when the material of the first member 9 is rubber and the material of the third member 13 is steel, the first hardness is lower than the third hardness. When the first hardness is lower than the third hardness, it is easier to more stably hold the cutting tool with the clamp member 1. Note that the second hardness and the third hardness may be the same or different.

The hardness of the lower jaw 5 is defined as the fourth hardness. At this time, the first hardness may be lower than the fourth hardness. For example, when the material of the first member 9 is rubber and the material of the lower jaw 5 is steel, the first hardness is lower than the fourth hardness. When the first hardness is lower than the fourth hardness, the main force applied to the cutting tool 101 during cutting is easily received by the lower jaw 5, which has a relatively high hardness. Note that the second hardness and the fourth hardness may be the same or different. Similarly, the third hardness and the fourth hardness may be the same or different.

The first hardness, second hardness, third hardness, and fourth hardness may be evaluated by Young's modulus. Young's modulus may be measured using a nanoindentation method.

The first hardness, second hardness, third hardness, and fourth hardness are not limited to specific values. When evaluating the first hardness, second hardness, third hardness, and fourth hardness using Young's modulus, each hardness may be set as follows. The first hardness may be set to, for example, 20 to 240. The second hardness may be set to, for example, 30 to 250. The third hardness may be set to 30 to 250, for example. The fourth hardness may be set to 30 to 250, for example.

The first hardness, second hardness, third hardness, and fourth hardness may be evaluated by attenuation rate. When the hardness is high, the attenuation rate tends to be low. Conversely, when the hardness is low, the attenuation rate tends to be high. The attenuation rate may be measured according to JIS Z 2354 (1992).

As shown in the example shown in FIG. 8, the length of the first member 9 in the direction in which the clamp member 1 extends is a first length L1, and the length of the second member 11 in the direction in which the clamp member 1 extends is a second length. Let it be L2. At this time, the maximum value of the first length L1 may be larger than the maximum value of the second length L2. In this case, positional displacement of the cutting tool 101 in a direction perpendicular to the direction in which the clamp member 1 extends when the upper jaw 3 is viewed from the front is unlikely to occur.

The length of the third member 13 in the direction in which the clamp member 1 extends is defined as a third length L3. At this time, the maximum value of the first length L1 may be larger than the maximum value of the third length L3. In this case, positional displacement of the cutting tool 101 in a direction perpendicular to the direction in which the clamp member 1 extends when the upper jaw 3 is viewed from the front is unlikely to occur. Note that the second length L2 and the third length L3 may be the same or different.

The first member 9 may have a first step 15. The first step 15 may be located on the first end 1a side. Further, the second member 11 may have a second step 17. The second step 17 may be located on the first member 9 side and further away from the lower jaw 5 than the first step 15. The first member 9 and the second member 11 may be fixed with the first step 15 and the second step 17 facing each other. In this case, positional displacement of the cutting tool 101 in a direction perpendicular to the direction in which the clamp member 1 extends when the upper jaw 3 is viewed from the front is unlikely to occur.

The first member 9 may have a third step 19. The third step 19 may be located on the second end 1b side. Further, the third member 13 may have a fourth step 21. The fourth step 21 may be located on the first member 9 side and further away from the lower jaw 5 than the third step 19. The first member 9 and the third member 13 may be fixed with the third step 19 and the fourth step 21 facing each other. In this case, positional displacement of the cutting tool 101 in a direction perpendicular to the direction in which the clamp member 1 extends when the upper jaw 3 is viewed from the front is unlikely to occur.

The clamp member 1 may have a fixing screw 23. The first member 9 and the second member 11 may be fixed by a fixing screw 23. Similarly, the first member 9 and the third member 13 may be fixed by fixing screws 23.

The cutting tool 101 may include a holder 109 and a cutting insert 111 (hereinafter also simply referred to as the insert 111).

The holder 109 may have a plate shape extending from the third end 101a side toward the fourth end 101b side. Further, the holder 109 may have an insert pocket 113 located on the third end 101a side. As shown in the example shown in FIG. 10, the holder 109 has an upper jaw part 115 and a lower jaw part 117 that are located on the third end 101a side and are located apart from each other, and the upper jaw part 115 and the lower jaw part 117 allow the insert pocket 113 may be configured.

Insert 111 may be located in insert pocket 113. In other words, the insert 111 may be sandwiched between the upper jaw section 115 and the lower jaw section 117.

The insert 111 may have a columnar shape extending from the third end 101a side toward the fourth end 101b side. An example insert 111 shown in FIG. 10 has a prismatic shape. Note that the shape of the insert 111 is not limited to a prismatic shape.

The insert 111 may have a cutting edge 119. The insert 111 in the example shown in FIG. 10 is located in the insert pocket 113 such that the cutting edge 119 protrudes outward on the third end 101a side of the holder 109. The cutting tool 101 can perform cutting by bringing the cutting blade 119 into contact with a workpiece.

As the material of the holder 109, steel, cast iron, or the like may be used. In particular, when steel is used among these materials, the holder 109 has high toughness.

Examples of the material of the insert 111 include inorganic materials such as cemented carbide, cermet, and ceramics. Examples of the composition of the cemented carbide include WC (tungsten carbide)-Co, WC-TiC (titanium carbide)-Co, and WC-TiC-TaC (tantalum carbide)-Co. Here, WC, TiC and TaC are hard particles, and Co is a binder phase.

Furthermore, cermet is a sintered composite material in which a metal is combined with a ceramic component. Specifically, examples of the cermet include compounds containing TiC or TiN (titanium nitride) as a main component. It goes without saying that the material of the insert 111 is not limited to these materials.

In an example shown in FIG. 9, a cutting tool 101 used for so-called turning is shown. The cutting tool 101 of the embodiment can be used in grooving, but is not limited to such processing. For example, there is no problem even if the cutting tool 101 of the embodiment is used for inner diameter machining, outer diameter machining, and cross-feed machining.

<Method for manufacturing cut workpieces>
Next, a method for manufacturing the cut workpiece 401 of the embodiment will be described using the drawings.

The cut workpiece 401 is produced by cutting a workpiece 403. The method for manufacturing the cut workpiece 401 in the embodiment includes the following steps. That is,
(1) A step of rotating the work material 403;
(2) a step of bringing the cutting tool 101 of the machine tool 301 typified by the above embodiment into contact with the rotating workpiece 403;
(3) a step of separating the cutting tool 101 from the workpiece 403;
It is equipped with

More specifically, first, as shown in FIG. 11, the workpiece 403 is rotated around the axis O3, and the cutting tool 101 attached to the machine tool 301 is brought relatively close to the workpiece 403. Next, as shown in FIGS. 12 and 13, the ridge line (cutting edge) of the cutting tool 101 is brought into contact with the workpiece 403 to cut the workpiece 403. Then, as shown in FIG. 14, the cutting tool 101 is moved relatively away from the workpiece 403.

In FIG. 11, the cutting tool 101 is brought close to the workpiece 403 by moving in the Y1 direction with the axis O3 fixed and the workpiece 403 rotated around the axis O3. Further, in FIGS. 12 and 13, the rotating workpiece 403 is cut by bringing the cutting edge 119 of the insert 111 into contact with the workpiece 403. Further, in FIG. 14, the cutting tool 101 is moved away from the workpiece 403 by moving it in the Y2 direction while the workpiece 403 is being rotated.

In addition, in the cutting process in the manufacturing method of the embodiment, in each step, the cutting tool 101 is brought into contact with the work material 403 by moving the cutting tool 101, or the cutting tool 101 is separated from the work material 403. However, it is of course not limited to this form.

For example, in step (1), the workpiece 403 may be moved closer to the cutting tool 101. Similarly, in the step (3), the workpiece 403 may be moved away from the cutting tool 101. When continuing cutting, the process of bringing the cutting edge 119 of the insert 111 into contact with different locations on the workpiece 403 may be repeated while keeping the workpiece 403 in a rotated state.

Note that typical examples of the material of the work material 403 include carbon steel, alloy steel, stainless steel, cast iron, and non-ferrous metals.

1... Clamp member 1a... First end 1b... Second end 3... Upper jaw 5... Lower jaw 7... Pocket 9... First member 11... Second member 13 ...Third member 15...First step 17...Second step 19...Third step 21...Fourth step 23...Fixing screw 25...First screw hole 27. ... Second screw hole 101 ... Cutting tool 101a ... Third end 101b ... Fourth end 101c ... Center 103 ... First side surface 105 ... Second side surface 107 ... Penetration Hole 107a...Inner wall surface 109...Holder 111...Cutting insert (insert)
113... Insert pocket 115... Upper jaw part 117... Lower jaw part 119... Cutting blade 201... First screw 203... Second screw 301... Machine tool 401... Cutting process Object 403...Work material L1...First length L2...Second length L3...Third length O1...First central axis O2...Second central axis O3・・・Axis X・・・Virtual line

Claims (7)

a column-shaped clamp member extending from the first end to the second end;
a plate-shaped cutting tool extending from a third end to a fourth end;
a plurality of first screws;
a second screw;
The cutting tool is
a first side;
a second side surface located on the opposite side of the first side surface;
through-holes opening in the first side surface and the second side surface, respectively;
The clamp member is
an upper jaw and a lower jaw located apart from each other;
a pocket located between the upper jaw and the lower jaw and in which the cutting tool is located;
a plurality of first screw holes passing through the upper jaw toward the lower jaw;
a second screw hole opening into the pocket;
the plurality of first screws are inserted into the plurality of first screw holes, and the second screw is inserted into the through hole and the second screw hole,
In a front view from the side of the third end, imaginary lines extending the first central axes of the plurality of first screws toward the lower jaw are separated from the cutting tool,
In a side view from the first side surface, each of the plurality of first screws is located closer to the fourth end than the second central axis of the second screw. The upper jaw has a contact portion that faces and comes into contact with the cutting tool,
When the upper jaw side is set as the upper side with respect to the lower jaw , and the lower jaw side is set as the lower side with respect to the upper jaw ,
In a front view from the third end side, the contact portion is
a first inclined surface that slopes upward as it approaches the first central axis ;
Claim 1, further comprising: a second inclined surface that is located closer to the first central axis than the first inclined surface and that slopes downward as it approaches the first central axis. Machine tools listed in. The machine tool according to claim 1 or 2 , wherein the virtual line intersects the second central axis when viewed from the front from the third end side. At least one of the plurality of first screw holes is located closer to the second end than the second screw hole,
Any one of claims 1 to 3, wherein at least one of the plurality of first screws is inserted into the first screw hole located closer to the second end than the second screw hole. The machine tool described in one. The machine tool according to any one of claims 1 to 4 , wherein the through hole is located closer to the third end than the center of the cutting tool in the extending direction of the cutting tool. The machine tool according to any one of claims 1 to 5 , wherein the second screw is spaced apart from an inner wall surface of the through hole. A process of rotating the workpiece,
a step of bringing the cutting tool in the machine tool according to any one of claims 1 to 6 into contact with the rotating workpiece;
A method for manufacturing a cut workpiece, comprising the step of separating the cutting tool from the workpiece.

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