WO2020070907A1

WO2020070907A1 - Holder, cutting tool, and manufacturing method for workpiece

Info

Publication number: WO2020070907A1
Application number: PCT/JP2019/007005
Authority: WO
Inventors: 重孝橋本; 大和田　靖彦; 高橋　宏和
Original assignee: 京セラ株式会社
Priority date: 2018-10-01
Filing date: 2019-02-25
Publication date: 2020-04-09
Also published as: JPWO2020070907A1; JP2020062746A

Abstract

A holder according to one embodiment has a base, a sensor, and a wireless transmission unit. The base has a rod shape extending from a first end to a second end and has a first recess and a second recess. The first recess is located on the first end side and is capable of having a cutting insert comprising a cutting edge attached. The second recess is located closer to the second end than the first recess. The sensor is attached to the base and can measure the status of the base. The wireless transmission unit is mounted in the second recess, is connected to the sensor with wires, and can wirelessly transmit the information measured by the sensor to the outside.

Description

Holder, cutting tool and method for manufacturing cut workpiece

Cross-reference of related applications

This application claims the priority of Japanese Patent Application No. 2018-186767, filed on October 1, 2018, the entire disclosure of which is hereby incorporated by reference.

This aspect generally relates to a holder capable of measuring a cutting state in a cutting operation of a work material. More specifically, the present invention relates to a holder capable of communicating a measured state of a cutting process with the outside.

As a cutting tool capable of measuring the state of a cutting process when cutting a work material such as a metal, for example, a cutting tool described in JP-A-2012-20359 (Patent Document 1) is known. I have. Patent Literature 1 describes a cutting tool including a main body, a cutting blade, a sensor unit, a cable member, and a communication unit, and the communication unit is detachably connected to the cable member.

ホルダ A holder based on a non-limiting aspect of the present disclosure has a base, a sensor, and a wireless communication unit. The base has a rod shape extending from the first end toward the second end, and has a first concave portion and a second concave portion. The first recess is located on the side of the first end and is capable of mounting a cutting insert with a cutting edge. The second recess is located closer to the second end than the first recess. The sensor is attached to the base and is capable of measuring the state of the base. The wireless communication unit is attached to the second concave portion and connected to the sensor by wire, and can wirelessly communicate information measured by the sensor with the outside.

It is a perspective view showing a cutting tool of an embodiment. FIG. 2 is an exploded perspective view of the cutting tool shown in FIG. It is the perspective view which looked at the cutting tool shown in FIG. 1 from another direction. It is the side view which looked at the cutting tool shown in FIG. 3 from A1 direction. It is the side view which looked at the cutting tool shown in FIG. 3 from A2 direction. FIG. 5 is a cross-sectional view taken along the line VI-VI of the cutting tool shown in FIG. 4. FIG. 7 is a sectional view taken along the line VII-VII of the cutting tool shown in FIG. 4. FIG. 6 is a cross-sectional view taken along the line VIII-VIII of the cutting tool shown in FIG. 5. It is a schematic diagram showing one process of a manufacturing method of a cutting work of an embodiment. It is a schematic diagram showing one process of a manufacturing method of a cutting work of an embodiment. It is a schematic diagram showing one process of a manufacturing method of a cutting work of an embodiment. It is a block diagram showing a flow of a control method of cutting processing of an embodiment. It is a flow chart of a control method of cutting processing of an embodiment.

切削 In the case of a cutting tool in which a communication unit is detachably connected to a cable member, it is difficult to use an existing machine tool as it is, and it is necessary to replace the machine tool or make a major modification to the machine tool. This is because, for example, when a cutting tool is attached to a machine tool such as a machining center or an NC lathe, it is necessary to separately provide a space for attaching a communication unit in addition to a space for attaching a main body. .

Hereinafter, the cutting tool 1 having the holder 3 according to the embodiment will be described in detail with reference to the drawings. However, in each drawing referred to below, for convenience of explanation, only the main members necessary for describing the embodiment are shown in a simplified manner. Therefore, the cutting tool 1 may include any components not shown in each of the drawings referred to. Further, the dimensions of the members in the drawings do not faithfully represent the actual dimensions of the constituent members, the dimensional ratios of the respective members, and the like.

<Cutting tools>
Examples of the cutting tool 1 include a turning tool, a rolling tool, a drill, and the like. Turning tools include outer diameter machining tools, inner diameter machining tools, grooving tools, and parting-off tools. The milling tool includes a milling tool and an end mill.

The cutting tool 1 of the embodiment has the holder 3 and the cutting insert 5 (hereinafter, also simply referred to as the insert 5). The cutting tool 1 in the example shown in FIG. 1 is a turning tool. As described above, there is no problem even if the cutting tool 1 is a rolling tool or a drill.

The holder 3 of the embodiment has a base 7, a sensor 9, and a first wireless communication unit 11. The base 7 in the embodiment may have a rod shape extending from the first end 3a to the second end 3b. Generally, the first end 3a is a front end, and the second end 3b is a rear end. As shown in FIG. 1, the base 7 may be in the shape of a quadrangular prism. Assuming that a virtual straight line extending from the first end 3a toward the second end 3b is the central axis O1, the base 7 may have the central axis O1 and extend along the central axis O1.

基体 As shown in FIG. 1, the base 7 may have a first side surface 13, a second side surface 15, a third side surface 17, and a fourth side surface 19. The first side surface 13, the second side surface 15, the third side surface 17, and the fourth side surface 19 may each extend from the first end 3a toward the second end 3b. The second side surface 15 may be located on the opposite side of the first side surface 13.

The third side 17 and the fourth side 19 may be located between the first side 13 and the second side 15, respectively. The fourth side surface 19 may be located on the opposite side of the third side surface 17. The third side 17 and the fourth side 19 may be orthogonal to the first side 13 and the second side 15, respectively.

大き The size of the base 7 is not particularly limited. For example, the length from the first end 3a to the second end 3b may be set to about 50 to 200 mm. The distance between the first side surface 13 and the second side surface 15 may be set to about 5 to 30 mm. The distance between the third side surface 17 and the fourth side surface 19 may be set to about 5 to 30 mm.

材質 Examples of the material of the base 7 include steel and cast iron. From the viewpoint of increasing the toughness of the base 7, steel may be used among these materials.

The base 7 has a first concave portion 21 located on the first end 3a side and a second concave portion 23 located on the second end 3b side. As shown in FIG. 1, the first concave portion 21 may be located including the first end 3a. In this case, the first recess 21 is open at the first end 3a. In addition, as shown in FIG. 1, the first recess 21 may be open to the first side surface 13 and the third side surface 17.

１The first recess 21 may be located closer to the first end 3a than the second recess 23. Therefore, the first recess 21 does not necessarily have to be located at the first end 3a. The first recess 21 is a portion to which the insert 5 can be attached. Therefore, in the cutting tool 1 having the holder 3 and the insert 5, the insert 5 may be located in the first recess 21. Generally, the first recess 21 is called a pocket.

The insert 5 has a cutting edge 25, and has a function of cutting a work material during cutting. As shown in FIG. 1, the insert 5 may be in the shape of a square plate, and have a first surface 27 and a second surface 29. The first surface 27 may have a region, called a rake surface, through which chips flow. The second surface 29 is adjacent to the first surface 27. In addition, the second surface 29 may have a region called a flank surface, which faces the machined surface of the workpiece. The cutting blade 25 only needs to be located at least at a part of a ridge line where the first surface 27 and the second surface 29 intersect.

As shown in FIG. 1, the first surface 27 of the insert 5 may be located substantially parallel to the third side surface 17 of the base 7. In other words, the first surface 27 of the insert 5 may be substantially perpendicular to the first side surface 13 and the second side surface 15 of the base 7. In this case, a main component force is likely to be applied to the cutting tool 1 in a direction substantially perpendicular to the third side surface 17 during cutting.

形状 The shape of the insert 5 is not limited to the above-described embodiment. The insert 5 of the embodiment has a square plate shape in which the shape of the first surface 27 is square. However, the shape of the first surface 27 may be, for example, a triangle or a hexagon. That is, the insert 5 may have, for example, a triangular plate shape or a hexagonal plate shape.

大き The size of the insert 5 is not particularly limited. For example, the length of one side of the first surface 27 may be set to about 3 to 20 mm. Further, the height of the insert 5 shown in a direction orthogonal to the first surface 27 may be set to about 5 to 20 mm.

材質 Examples of the material of the insert 5 include a cemented carbide and a cermet. Examples of the composition of the cemented carbide include WC-Co, WC-TiC-Co, and WC-TiC-TaC-Co. Here, WC, TiC, and TaC are hard particles, and Co is a binder phase.

サー Cermet is a sintered composite material in which a metal is combined with a ceramic component. Specifically, the cermet includes a titanium compound containing titanium carbide (TiC) and / or titanium nitride (TiN) as a main component. However, it goes without saying that the material of the insert 5 is not limited to the above composition.

The surface of the insert 5 may be coated with a coating using a chemical vapor deposition (CVD) method or a physical vapor deposition (PVD) method. Examples of the composition of the coating include titanium carbide (TiC), titanium nitride (TiN), titanium carbonitride (TiCN), and alumina (Al ₂ O ₃ ).

２The second recess 23 may be located closer to the second end 3b than the first recess 21 is. Therefore, the second recess 23 does not necessarily have to be located at the second end 3b. The second recess 23 in the example shown in FIG. 1 is located away from the second end 3b. As shown in FIG. 1, the second recess 23 may be open to the first side surface 13.

The holder 3 may have a sensor 9 attached to the base 7. The sensor 9 is a member capable of measuring the state of the base 7 during cutting. Examples of the state of the base 7 include physical quantities such as temperature, acceleration, vibration, strain, internal stress, and wear. Measuring the state of the base 7 means measuring at least one of the physical quantities of the base 7 represented above. Further, the measurement target is not limited to information in a static state, and may be information in a dynamic state, that is, a change in state.

For example, let the information of the measurement target be temperature. Further, it is assumed that the temperature of the base 7 before cutting is 20 °, and the temperature of the base 7 rises to 80 ° during cutting. At this time, 20 ° which is the temperature of the base 7 before the cutting is information on the temperature in a static state. Further, the rise in the temperature of the base 7 from 20 ° to 80 ° is information on the temperature in a dynamic state. Either one of these pieces of information may be measured, or both may be measured.

For example, when the holder 3 has a thermocouple as the sensor 9, the temperature of the base 7 can be measured. Even when the holder 3 has a piezoelectric sensor using a piezo element, it is possible to measure acceleration, vibration, strain, internal stress, and the like. Further, the holder 3 may have a wiring circuit functioning as the sensor 9. Specifically, when the wiring circuit is worn by the wear of the base 7 and the resistance value of the circuit changes, the wear state of the base 7 may be measured by the change in the resistance value.

状態 The state of the base 7 that can be measured by the sensor 9 is not limited to the above physical property values. Further, the sensor 9 is not limited to the specific examples described above, and any other element not particularly described may be used as long as it can measure the physical property values of the base 7 exemplified above. For example, there are a camera and a microphone.

The holder 3 may have the first wireless communication unit 11 attached to the second recess 23 in the holder 3. The first wireless communication unit 11 is connected to the sensor 9 by wire, and information of the base 7 measured by the sensor 9 is transmitted to the first wireless communication unit 11. The information of the base 7 transmitted to the first wireless communication unit 11 can be wirelessly communicated with the outside in the first wireless communication unit 11.

As shown in FIG. 2, the holder 3 may have a first connection unit 31 that connects the sensor 9 and the first wireless communication unit 11 by wire. Examples of the first connection portion 31 include a wiring and a circuit using a conductor. The transmission of information from the sensor 9 to the first wireless communication unit 11 is not limited to the above, and may be performed using, for example, an optical wiring.

When the external member that performs wireless communication with the first wireless communication unit 11 is the second wireless communication unit 33, information on the base 7 measured by the sensor 9 is transmitted from the first wireless communication unit 11, The wireless communication unit 33 may receive it. The information of the base 7 received by the second wireless communication unit 33 may be transmitted to the evaluation unit 35. The evaluation unit 35 may evaluate the state of the base 7.

加工 Based on the evaluation result, for example, the processing conditions such as the feed amount, the rotation speed of the work material, and the injection amount of the coolant (coolant) may be changed. In some cases, cutting may be stopped. Although the cutting tool 1 of the embodiment is a turning tool, when the cutting tool 1 is a rolling tool or a drill, the processing conditions that can be changed include the rotation speed of the cutting tool 1.

Note that the wireless communication described above is not limited to transmission of information from the first wireless communication unit 11 to the second wireless communication unit 33, and transmission of information from the second wireless communication unit 33 to the first wireless communication unit 11. It is a concept including Further, the wireless communication described above may be bidirectional transmission and reception of information between the first wireless communication unit 11 and the second wireless communication unit 33.

１ The first wireless communication unit 11 may be attached to the second recess 23. In this case, the first wireless communication unit 11 is more likely to be prevented from protruding outside than the outer surface of the base 7, as compared with the conventional holder 3 including only the base 7. That is, in the machine tool to which the holder 3 is attached, it is not necessary to separately provide a space for attaching the first wireless communication unit 11.

Therefore, it is possible to attach the holder 3 of the embodiment to an existing machine tool to which the conventional holder 3 constituted only by the base 7 is attached without performing a large-scale modification. As described above, since the existing machine tool can be easily used as it is, the manufacturing cost of the cut workpiece is suppressed.

The base 7 may further have a third recess 37 in addition to the first recess 21 and the second recess 23 as in the example shown in FIG. The third recess 37 may be located closer to the second end 3b than the first recess 21 as in the example shown in FIG. As shown in FIG. 2, the third recess 37 may be open to the first side surface 13. In the example of the holder 3 shown in FIG. 2, the base 7 has a third recess 37, and the sensor 9 is attached to the third recess 37.

In the case where the sensor 9 has a thickness equivalent to that of the first wireless communication unit 11, the sensor 9 may be attached to the third recess 37. In this case, there is no need to separately provide a space for mounting the sensor 9 in the machine tool to which the holder 3 is mounted.

Therefore, it is possible to attach the holder 3 of the embodiment to an existing machine tool to which the conventional holder 3 constituted only by the base 7 is attached without performing a large-scale modification. Therefore, the manufacturing cost of the cut workpiece is suppressed.

The second concave portion 23 and the third concave portion 37 may be located closer to the second end 3b than the first concave portion 21. At this time, the second concave portion 23 and the third concave portion 37 may be located at the second end 3b, or may be located away from the second end 3b as in an example shown in FIG.

When the second concave portion 23 and the third concave portion 37 are located away from the second end 3b, when attaching the holder 3 to the machine tool, the distance between the second concave portion 23 and the third concave portion 37 and the second end 3b is reduced. It is possible to hold the holder 3 with. Therefore, it is possible to stably hold the holder 3 while performing stable wireless communication between the first wireless communication unit 11 and the outside.

The second concave portion 23 and the third concave portion 37 may be located independently of each other, that is, may be located away from each other. Further, the second concave portion 23 and the third concave portion 37 may be connected to form one concave portion, that is, may be formed integrally. When the second concave portion 23 and the third concave portion 37 are formed integrally, the manufacturing process of forming the second concave portion 23 and the third concave portion 37 on the holder 3 can be simplified.

In the case where the second concave portion 23 and the third concave portion 37 are formed integrally, when the holder 3 has the first connecting portion 31, the first connecting portion 31 is connected to the second concave portion 23 and the third concave portion 37. It can be located in the recess constituted by the recess 37. Thereby, at the time of cutting, for example, chips are less likely to come into contact with the first connection portion 31, so that the first connection portion 31 is not easily damaged. Therefore, the durability of the holder 3 is high.

The sensor 9 may be located closer to the first end 3a than the first wireless communication unit 11, as shown in FIG. In other words, the sensor 9 may be located closer to the first recess 21 than the first wireless communication unit 11. When the sensor 9 is located relatively near the first recess 21, the state of the base 7 can be measured with higher accuracy.

In addition, when the first wireless communication unit 11 is relatively far away from the first recess 21, the influence of heat and vibration generated during the cutting process on the first wireless communication unit 11 is suppressed. Therefore, the wireless communication between the first wireless communication unit 11 and the outside can be stably performed.

The base 7 may further include a fourth recess 39 in addition to the first recess 21 and the second recess 23 as in the example shown in FIG. The fourth recess 39 may be located closer to the second end 3b than the first recess 21 as in the example shown in FIG. As shown in FIG. 3, the fourth recess 39 may be open to the second side surface 15. In the example of the holder 3 shown in FIG. 4, the base 7 has the fourth concave portion 39, and the battery 41 is attached to the fourth concave portion 39.

電力 The first wireless communication unit 11 may be supplied with power from an external power supply, or may be supplied with power from the battery 41 described above. When power is supplied from the battery 41 to the first wireless communication unit 11, it is not necessary to provide a wiring for electrically connecting the power supply and the first wireless communication unit 11 to the machine tool. Therefore, existing machine tools are easily used.

Furthermore, when the battery 41 is located in the fourth recess 39, it is not necessary to separately provide a space for mounting the battery 41 in the machine tool to which the holder 3 is mounted. Therefore, existing machine tools are easily used.

ホルダ The holder 3 in the example shown in FIG. 4 has a second connection unit 43 for connecting the battery 41 and the first wireless communication unit 11 by wire. Examples of the second connection unit 43 include a wiring and a circuit using a conductor, as in the first connection unit 31.

The second concave portion 23 and the fourth concave portion 39 may be located independently of each other, that is, may be located apart from each other. Further, the second concave portion 23 and the fourth concave portion 39 may be connected to form one concave portion, that is, may be formed integrally. As shown in FIG. 4, the base 7 may have through holes 45 that open in the second recess 23 and the fourth recess 39, respectively. The second recess 23 and the fourth recess 39 may be connected via the through hole 45.

When the second concave portion 23 and the fourth concave portion 39 are formed integrally, when the holder 3 has the second connecting portion 43, the second connecting portion 43 is connected to the second concave portion 23 and the fourth concave portion 39. Can be located in the recess constituted by For example, when the base 7 has the through-hole 45 as in the example shown in FIG. 4, the second connection portion 43 can be located in the through-hole 45. Therefore, the second connecting portion 43 is not easily damaged during cutting. Therefore, the durability of the holder 3 is high.

４The fourth recess 39 may be located on the opposite side of the second recess 23 with respect to the central axis O1. Specifically, when the base 7 is viewed through the plane toward the first end 3a, the fourth recess 39 may be located on the opposite side of the second recess 23 with respect to the center axis O1. Here, being located on the opposite side means that when the base 7 is viewed through the plane toward the first end 3a, a part of the second concave part 23, a part of the fourth concave part 39, O1 is located on a straight line.

基体 The base 7 in the example shown in FIG. 4 has the first side surface 13 and the second side surface 15 as described above. The second recess 23 is located on the first side surface 13, and the fourth recess 39 is located on the second side surface 15.

(4) When the second concave portion 23 and the fourth concave portion 39 are located on the opposite sides as described above, it is easy to secure a large space between the second concave portion 23 and the fourth concave portion 39. Therefore, for example, the size of the first wireless communication unit 11 located in the second recess 23 can be increased, and stable wireless communication can be performed between the first wireless communication unit 11 and the outside. Further, for example, the capacity of the battery 41 located in the fourth recess 39 can be increased.

(4) When the second concave portion 23 and the fourth concave portion 39 are not located on the third side surface 17 and the fourth side surface 19 as described above, the durability of the base 7 is high. As described above, the main component force is likely to be applied in a direction substantially orthogonal to the third side surface 17 during the cutting. Here, when the second concave portion 23 and the fourth concave portion 39 are located as described above, a large thickness portion of the base 7 between the third side surface 17 and the fourth side surface 19 is easily secured. Therefore, the durability of the base 7 is high. When the second concave portion 23 and the fourth concave portion 39 are located as described above, when the holder 3 is mounted on the machine tool, the holder 3 is gripped by the machine tool on the third side surface 17 and the fourth side surface 19. easy.

The holder 3 may further have a resin member 47. The resin member 47 is filled in the second recess 23 as shown in FIG. 8, and may seal the first wireless communication unit 11. When the holder 3 has such a resin member 47, the first wireless communication unit 11 is not easily damaged during cutting.

The resin member 47 does not need to be filled only in the second concave portion 23. When the base 7 has the third concave portion 37 and / or the fourth concave portion 39, the resin member 47 fills the third concave portion 37 and / or the fourth concave portion 39. It may be filled. For example, the resin member 47 may be filled in the third recess 37 to seal the sensor 9. In this case, the sensor 9 is not easily damaged during the cutting.

The resin member 47 may be filled in the fourth recess 39 to seal the battery 41. In this case, the battery 41 is not easily damaged during the cutting. Conversely, from the viewpoint of facilitating replacement of the battery 41, the fourth concave portion 39 may not be filled with the resin member 47.

Note that the resin member 47 filled in the second recess 23 is a first resin member 47a, the resin member 47 filled in the third recess 37 is a second resin member 47b, and the resin member 47 filled in the fourth recess 39 is a When the third resin member 47c is used, the first resin member 47a, the second resin member 47b, and the third resin member 47c may be made of the same material or different materials. When these resin members 47 are made of the same material, it is sufficient to prepare one kind of resin when manufacturing the holder 3, so that the cost for manufacturing the holder 3 can be suppressed.

In addition, when the resin members 47 are made of different materials, the performance of the holder 3 can be improved. For example, since the first wireless communication unit 11 is located in the second recess 23, a material having better radio wave permeability than the second resin member 47b and the third resin member 47c is used as the first resin member 47a. You may. Since the battery 41 is located in the fourth concave portion 39, a material having better thermal conductivity than the first resin member 47a and the second resin member 47b may be used as the third resin member 47c.

When the sensor 9 is a member that measures acceleration, vibration, strain, stress, and the like of the base 7 like a MEMS sensor and a pressure sensor, the sensor 9 is used as the second resin member 47b in order to improve measurement accuracy. Alternatively, a material that is less elastically deformable than the first resin member 47a and the third resin member 47c may be used. Which of the first resin member 47a, the second resin member 47b, and the third resin member 47c is easily elastically deformed may be evaluated by using, for example, a nanoindentation method.

The holder 3 may have a first cover member 49. In the example shown in FIG. 1, the first cover member 49 is located at the opening of the second recess 23. In addition, it may be paraphrased that the first cover member 49 is located on the first wireless communication unit 11. When the holder 3 has such a first cover member 49, the first wireless communication unit 11 is not easily damaged during cutting.

As shown in FIG. 8, the first resin member 47a may be filled in the second concave portion 23, and the first cover member 49 may be located on the first resin member 47a. As described above, when the holder 3 includes the first resin member 47a and the first cover member 49, the first wireless communication unit 11 is protected by the first resin member 47a and the first cover member 49. Therefore, the first wireless communication unit 11 is harder to be damaged.

The holder 3 may have the second cover member 51 and / or the third cover member. As shown in FIG. 8, the second cover member 51 may be located at the opening of the third recess 37. In addition, it may be rephrased that the second cover member 51 is located above the sensor 9. When the holder 3 has such a second cover member 51, the sensor 9 is not easily damaged during cutting.

As shown in FIG. 1, the third recess 37 may be filled with a second resin member 47b, and the second cover member 51 may be located on the second resin member 47b. As described above, when the holder 3 includes the second resin member 47b and the second cover member 51, the sensor 9 is protected by the second resin member 47b and the second cover member 51. Therefore, the sensor 9 is hardly damaged.

３The third cover member may be located at the opening of the fourth recess 39. In other words, the third cover member may be located on the battery 41. When the holder 3 has such a third cover member, the battery 41 is not easily damaged during cutting.

４The fourth recess 39 may be filled with a third resin member 47c, and the third cover member may be located on the third resin member 47c. As described above, when the holder 3 includes the third resin member 47c and the third cover member, the battery 41 is protected by the third resin member 47c and the third cover member. Therefore, the battery 41 is harder to be damaged.

The first cover member 49, the second cover member 51, and the third cover member are not limited to specific materials. For example, an organic material such as plastic, an inorganic material such as glass, or a metal such as stainless steel may be used. From the viewpoint of ease of attachment to the base 7, these cover members may be made of metal.

The first cover member 49 may have at least one opening 49a. As shown in FIG. 1, the first cover member 49 may have a plurality of openings 49a. As described above, the first wireless communication unit 11 may be located in the second recess 23. When the first cover member 49 has at least one opening 49a, a signal of wireless communication between the first wireless communication unit 11 and the outside easily passes through the opening 49a. From the viewpoint of enhancing the advantage that the first wireless communication unit 11 is protected by the first cover member 49, the first cover member 49 may not have the opening 49a.

異なり Unlike the first cover member 49, the second cover member 51 and the third cover member need not have openings. This is because the sensor 9 is located in the third recess 37 and the battery 41 is located in the fourth recess 39. Since the sensor 9 and the battery 41 do not need to perform wireless communication with the outside, the second cover member 51 and the third cover member do not have to have openings.

<Manufacturing method of cut workpiece>
Next, a method for manufacturing a cut product of the embodiment will be described with reference to the drawings.

The cut workpiece 103 is manufactured by cutting the work material 101. The method for manufacturing the cut workpiece 103 according to the embodiment includes the following steps. That is,
(1) a step of rotating the work material 101;
(2) bringing the cutting tool 1 represented by the above embodiment into contact with the rotating work material 101;
(3) a step of separating the cutting tool 1 from the work material 101;
It has.

More specifically, first, as shown in FIG. 9, the work material 101 is rotated around the axis O2, and the cutting tool 1 is relatively brought closer to the work material 101. Next, as shown in FIG. 10, the cutting edge of the cutting tool 1 is brought into contact with the workpiece 101 to cut the workpiece 101. Then, as shown in FIG. 11, the cutting tool 1 is relatively moved away from the work material 101.

In the embodiment, the cutting tool 1 is moved in the Y1 direction while the shaft O2 is fixed and the work material 101 is rotated so as to approach the work material 101. In FIG. 10, the work material 101 is cut by bringing the cutting edge of the insert 5 into contact with the rotating work material 101. In FIG. 11, the cutting tool 1 is moved away in the Y2 direction while the work material 101 is being rotated.

In the cutting in the manufacturing method of the embodiment, in each step, the cutting tool 1 is moved to contact the cutting tool 1 with the work material 101, or the cutting tool 1 is separated from the work material 101. However, it is needless to say that the present invention is not limited to such a form.

For example, in the step (1), the work material 101 may be brought closer to the cutting tool 1. Similarly, in the step (3), the work material 101 may be moved away from the cutting tool 1. When the cutting process is continued, the step of keeping the rotating state of the work material 101 and bringing the cutting blade of the insert 5 into contact with different portions of the work material 101 may be repeated.

代表 Note that typical examples of the material of the work material 101 include carbon steel, alloy steel, stainless steel, cast iron, and non-ferrous metals.

<Cutting process control method>
Next, a method of controlling cutting according to the embodiment will be described with reference to the drawings.

状態 By cutting the work material 101 in the step (2), the state of the base 7 changes. For example, since a cutting load is applied to the cutting tool 1 during cutting, the base 7 vibrates, and strain and internal stress are generated in the base 7. Further, the temperature of the base 7 is increased by performing the cutting process, and the vibration mode of the base 7 is changed by the wear of the cutting blade 25.

For example, when the sensor 9 is a thermocouple, the temperature of the base 7 can be measured. When the sensor 9 is a piezoelectric sensor, the vibration, strain and internal stress of the base 7 can be measured. As described above, the sensor 9 has the measuring means for measuring the state of the base 7.

情報 The information measured by the sensor 9 is transmitted from the sensor 9 to the first wireless communication unit 11. That is, as shown in FIG. 12, the sensor 9 includes a first transmission unit C1 that transmits the measured information to the first wireless communication unit 11. The information transmitted from the sensor 9 is transmitted from the first wireless communication unit 11 to the outside. That is, the first wireless communication unit 11 includes the second transmission unit C2 that wirelessly communicates information transmitted from the sensor 9 with the outside.

情報 The information transmitted from the first wireless communication unit 11 to the outside is received by, for example, the above-described second wireless communication unit 33 and transmitted to the evaluation unit 35. The information transmitted to the evaluation unit 35 is compared with information based on a result measured in advance, and the state of the base 7 is evaluated. That is, the evaluation unit 35 has a first evaluation unit that evaluates the state of the base 7.

When the state of the base 7 evaluated as described above satisfies predetermined conditions, processing conditions such as the feed amount, the rotation speed of the work material 101, and the injection amount of the coolant (coolant) may be changed. . The changed processing conditions are transmitted to the control unit of the machine tool. That is, the evaluation unit 35 evaluates the processing condition based on the result evaluated by the first evaluation unit, and the second wireless communication unit 33 transmits the changed processing condition evaluated by the second evaluation unit. And a third transmitting unit C3 for transmitting to

The second wireless communication unit 33 has a fourth transmission unit C4 that transmits information to a control unit in the machine tool. The processing condition after the change is transmitted to the control unit by the fourth transmission unit C4. Then, as shown in FIG. 13, the cutting is continued or the cutting is stopped according to the changed processing conditions. By the above process, cutting can be performed under appropriate processing conditions.

The evaluation unit 35 may include a third evaluation unit that evaluates whether the cutting tool 1 has been separated from the work material 101. In the step (3), the cutting tool 1 is separated from the work material 101. Therefore, the vibration, strain, and / or internal stress of the base 7 become substantially zero. For example, the third evaluation unit may evaluate that the cutting tool 1 has been separated from the work material 101 when information on vibration, strain, internal stress, and the like has fallen below a predetermined strength for a certain period of time.

When the evaluation unit 35 evaluates that the cutting tool 1 has been separated from the work material 101 by the third evaluation unit, the wireless communication between the first wireless communication unit 11 and the outside is performed in order to suppress power consumption of the battery 41. Communication may be temporarily stopped. For example, when a signal for temporarily stopping wireless communication is transmitted from the second wireless communication unit 33 to the control unit, wireless communication between the first wireless communication unit 11 and the outside is temporarily stopped. Is also good.

DESCRIPTION OF SYMBOLS 1 ... Cutting tool 3 ... Holder 3a ... 1st end 3b ... 2nd end 5 ... Cutting insert (insert)
7 ... Base 9 ... Sensor 11 ... 1st wireless communication part 13 ... 1st side surface 15 ... 2nd side surface 17 ... 3rd side surface 19 ... 4th side surface 21 ... 1st concave portion 23 2nd concave portion 25 cutting edge 27 1st surface 29 2nd surface 31 1st connection section 33 2nd wireless communication section 35 ..Evaluation part 37 ... third recess 39 ... fourth recess 41 ... battery 43 ... second connection part 45 ... through hole 47 ... resin member 47a ... first resin member 47b second resin member 47c third resin member 49 first cover member 49a opening 51 second cover member 101 work material 103 cut workpiece

Claims

A rod extending from the first end toward the second end,
A first recess, on the side of the first end, to which a cutting insert having a cutting edge is attached;
A second recess located closer to the second end than the first recess,
A substrate having:
A sensor attached to the base and capable of measuring a state of the base;
A wireless communication unit attached to the second recess and connected to the sensor by wire, and capable of wirelessly communicating information measured by the sensor with the outside;
A holder having:
The base further includes a third recess positioned closer to the second end than the first recess,
The holder according to claim 1, wherein the sensor is attached to the third recess.
The holder according to claim 2, wherein the second concave portion and the third concave portion are located apart from the second end.
4. The holder according to claim 2, wherein the second concave portion and the third concave portion are formed integrally.
(5) The holder according to any one of (1) to (4), wherein the sensor is located closer to the first end than the wireless communication unit.
The base has a fourth recess located closer to the second end than the first recess,
Further comprising a battery mounted in the fourth recess;
The holder according to any one of claims 1 to 5.
The base has a central axis extending from the first end toward the second end,
The holder according to claim 6, wherein the fourth recess is located on the opposite side of the second recess with respect to the central axis.
(8) The holder according to any one of (1) to (7), further comprising a resin member filled in the second recess and sealing the wireless communication unit.
The holder according to claim 8, further comprising a cover member located on the resin member.
The holder according to claim 9, wherein the cover member is made of metal.
The holder according to claim 10, wherein the cover member has at least one opening.
A holder according to any one of claims 1 to 11,
A cutting insert attached to the first recess.
Rotate the work material,
The cutting tool according to claim 12 is brought into contact with the rotating work material,
Separating the cutting tool from the work material.
Rotate the work material,
The cutting material according to claim 12 is brought into contact with the work material,
The sensor measures the state of the substrate,
A data collection method, comprising: wirelessly communicating information measured by the sensor with an external device via the wireless communication unit.