Turning tools

Abstract

To provide a turning tool which can inhibit hindrance of rotation of a turret while securing high waterproofness, and to provide a turning device.SOLUTION: A turning tool includes a power receiving coil, a sensor, and a wireless unit. The power receiving coil receives electric power transmitted from a power transmitting coil in a non-contact manner. The sensor is electrically connected to the power receiving coil. The wireless unit transmits data detected by the sensor to the outside.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a turning tool and a turning device. This application claims priority based on Japanese Patent Application No. 2020-089667, filed on May 22, 2020. All the descriptions described in the Japanese patent application are incorporated herein by reference.

Background Art

[0002] Japanese Patent Application Laid-Open No. 2013-184275 (Patent Document 1) discloses a turning tool mounted on a turret.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

[0004] The turning tool according to the present disclosure includes a power receiving coil, a sensor, and a wireless unit. The power receiving coil receives power sent from a power transmitting coil in a non-contact manner. The sensor is electrically connected to the power receiving coil. The wireless unit transmits data detected by the sensor to the outside.

Brief Description of the Drawings

[0005] [Figure 1] FIG. 1 is an overall configuration diagram showing the configuration of a turning device according to the first embodiment. [Figure 2] FIG. 2 is an overall configuration diagram showing the configuration of a turning device according to a modification of the first embodiment. [Figure 3] FIG. 3 is an overall configuration diagram showing the configuration of a turning device according to the second embodiment. [Figure 4] FIG. 4 is an overall configuration diagram showing the configuration of a turning device according to the third embodiment. [Figure 5] FIG. 5 is a schematic plan view showing the configuration of a turning tool according to the first embodiment. [Figure 6] Figure 6 is a schematic cross-sectional view along the line VI-VI in Figure 5. [Figure 7] Figure 7 is a schematic cross-sectional view showing the configuration of a turning tool according to the second embodiment. [Figure 8] Figure 8 is a schematic plan view showing the configuration of a turning tool according to the third embodiment. [Figure 9] Figure 9 is a schematic cross-sectional view along the line IX-IX in Figure 8. [Figure 10] Figure 10 is a schematic perspective view showing the configuration of a turning tool according to the fourth embodiment. [Figure 11] Figure 11 is a schematic plan view showing the configuration of a turning tool according to the fifth embodiment. [Figure 12] Figure 12 is a schematic cross-sectional view along the line XII-XII in Figure 11. [Figure 13] Figure 13 is a schematic diagram of an enlarged cross-section of region XIII in Figure 12. [Figure 14] Figure 14 is a schematic plan view showing the configuration of a turning tool according to the sixth embodiment. [Figure 15] Figure 15 is a schematic cross-sectional view along the line XV-XV in Figure 14. [Figure 16] Figure 16 is a schematic plan view showing the configuration of a turning tool according to the seventh embodiment. [Figure 17] Figure 17 is a schematic plan view showing the configuration of a turning tool according to the eighth embodiment. [Figure 18] Figure 18 is a schematic cross-sectional view along the line XVIII-XVIII in Figure 17. [Figure 19] Figure 19 is a schematic plan view showing the configuration of a turning tool according to the ninth embodiment. [Figure 20] Figure 20 is a schematic cross-sectional view along the line XX-XX in Figure 19. [Figure 21] Figure 21 is a schematic plan view showing the configuration of a turning tool according to the 10th embodiment. [Figure 22] Figure 22 is a schematic plan view showing the configuration of a turning tool according to the 11th embodiment. [Figure 23]FIG. 23 is a schematic cross-sectional view taken along line XXIII-XXIII of FIG. 22. [Figure 24] FIG. 24 is a schematic plan view showing the configuration of the turret according to the first embodiment. [Figure 25] FIG. 25 is a schematic cross-sectional view taken along line XXV-XXV of FIG. 24. [Figure 26] FIG. 26 is a schematic plan view showing the configuration of the turret according to the second embodiment. [Figure 27] FIG. 27 is a schematic cross-sectional view taken along line XXVII-XXVII of FIG. 26. [Figure 28] FIG. 28 is a schematic plan view showing the configuration of the turret according to the third embodiment. [Figure 29] FIG. 29 is a schematic cross-sectional view taken along line XXIX-XXIX of FIGS. 28 and 30. [Figure 30] FIG. 30 is a schematic plan view showing the configuration of the turret according to the fourth embodiment. [Figure 31] FIG. 31 is a schematic plan view showing the configuration of the turret according to the fifth embodiment. [Figure 32] FIG. 32 is a schematic cross-sectional view taken along line XXXII-XXXII of FIG. 31.

MODE FOR CARRYING OUT THE INVENTION

[0006] [PROBLEMS TO BE SOLVED BY THE PRESENT DISCLOSURE] Development of a system for analyzing data from sensors attached to a turning tool and diagnosing the state of the turning tool is underway. The data detected by the sensor is, for example, wirelessly sent to an external diagnostic system. In the diagnostic system, for example, the life of the turning tool is predicted.

[0007] Turning tools are sometimes used mounted on a turret. To power the sensor attached to the turning tool, it is conceivable to supply power via a wired connection from an external power source. However, when powering the sensor using a wire, there is a risk that the wire may become entangled in the turret when it is rotated, hindering the turret's rotation.

[0008] It is also conceivable to supply power to the sensor from an external power source via electrical contacts. However, turning tools sometimes use coolant while turning the workpiece. In this case, it is difficult to ensure high water resistance at the electrical contacts.

[0009] The purpose of this disclosure is to provide a turning tool and turning apparatus that can suppress interference with the rotation of the turret while ensuring high water resistance. [Effects of this disclosure] According to this disclosure, it is possible to provide a turning tool and turning apparatus that can suppress interference with the rotation of the turret while ensuring high water resistance. [Description of Embodiments in this Disclosure] First, embodiments of this disclosure will be listed and described.

[0010] (1) The turning tool 10 according to this disclosure comprises a power receiving coil 11, a sensor 12, and a wireless unit 14. The power receiving coil 11 receives power from the power transmitting coil 21 in a non-contact manner. The sensor 12 is electrically connected to the power receiving coil 11. The wireless unit 14 transmits the data detected by the sensor 12 to the outside. This allows power to be supplied to the sensor 12 in a non-contact manner. Therefore, it is possible to suppress interference with the rotation of the turret 22 while ensuring high water resistance.

[0011] (2) The turning tool 10 according to (1) above further comprises a cutting tip 17 and a shank 16 that holds the cutting tip 17. The power receiving coil 11 is located on the shank 16. This makes it possible to increase the area of ​​the power receiving coil 11.

[0012] (3) In the turning tool 10 described in (2) above, a first recess 30 is provided on the side surface 1 of the shank 16. The power receiving coil 11 is positioned in the first recess 30. Therefore, the side surface 1 of the shank 16 can be pressed against the turret 22 without the power receiving coil 11 coming into contact with the turret 22. As a result, the turning tool 10 can be firmly attached to the turret 22.

[0013] (4) The turning tool 10 according to (3) above is further provided with a first non-metallic film 38 that is placed in the first recess 30 and covers the power receiving coil 11. This makes it possible to improve the waterproofness of the power receiving coil 11.

[0014] (5) According to the turning tool 10 described in (4) above, the first recess 30 has a first side wall surface 31 connected to the side surface 1 and a first bottom surface 32 connected to the first side wall surface 31. The first nonmetallic film 38 has a first surface 51 facing the first bottom surface 32 and a second surface 52 on the opposite side of the first surface 51. In the direction along the first side wall surface 31, the second surface 52 is located between the side surface 1 and the first bottom surface 32. This prevents the first nonmetallic film 38 from protruding from the first recess 30 and riding up onto the side surface 1 of the shank 16. Therefore, the side surface 1 of the shank 16 can be firmly attached to the turret 22.

[0015] (6) According to the turning tool 10 according to any of (2) to (5) above, the power receiving coil 11 has a first power receiving coil section 101 and a second power receiving coil section 102 spaced apart from the first power receiving coil section 101. The shank 16 has a first side surface 1 and a second side surface 2 that is connected to the first side surface 1 and inclined with respect to the first side surface 1. The first power receiving coil section 101 is provided on the first side surface 1. The second power receiving coil section 102 is provided on the second side surface 2. This makes it possible to efficiently receive power from the turret 22 regardless of the surface to which it is attached to the turret 22.

[0016] (7) According to the turning tool 10 described in (2) above, the power receiving coil 11 has a plurality of power receiving coil sections 111 arranged along the longitudinal direction of the shank 16. This allows power to be received from the turret 22 even when the shank 16 is cut to shorten the overhang amount of the shank 16.

[0017] (8) According to the turning tool 10 described in (7) above, the side surface 1 of the shank 16 is provided with a first recess 30 in which each of the multiple power receiving coils 111 is arranged. The turning tool 10 is provided with a first non-metallic film 38 which is arranged in the first recess 30 and covers each of the multiple power receiving coils 111. This makes it possible to improve the waterproofness of each of the multiple power receiving coils 111.

[0018] (9) According to the turning tool 10 described in (8) above, the first recess 30 has a first side wall surface 31 connected to the side surface 1 and a first bottom surface 32 connected to the first side wall surface 31. The first nonmetallic film 38 has a first surface 51 facing the first bottom surface 32 and a second surface 52 on the opposite side of the first surface 51. In the direction along the first side wall surface 31, the second surface 52 is located between the side surface 1 and the first bottom surface 32. This prevents the first nonmetallic film 38 from protruding from the first recess 30 and riding up onto the side surface 1 of the shank 16. Therefore, the side surface 1 of the shank 16 can be firmly attached to the turret 22.

[0019] (10) In the turning tool 10 according to (8) or (9) above, the first non-metallic film 38 is a translucent resin. When the first non-metallic film 38 is a translucent resin, the user of the turning tool 10 can see the position of each of the multiple power receiving coils 111 located beneath the first non-metallic film 38. Therefore, when cutting the shank 16 of the turning tool 10, the cutting position can be seen without exposing each of the power receiving coils 111.

[0020] (11) According to the turning tool 10 described in (8) or (9) above, the first non-metallic film 38 is made of a non-transparent resin. The shank 16 is provided with a mark 4 indicating the cutting position of the shank 16. When the first non-metallic film 38 is made of a non-transparent resin, the user of the turning tool 10 cannot see the position of each of the multiple power receiving coils 111 located beneath the first non-metallic film 38. Because the shank 16 is provided with a mark 4 indicating the cutting position, even if the first non-metallic film 38 is made of a non-transparent resin, the cutting position can be recognized without exposing each of the power receiving coils 111.

[0021] (12) According to the turning tool 10 relating to any of (7) to (11) above, the distance between two adjacent power receiving coils 111 among the multiple power receiving coils 111 decreases as they move away from the cutting tip 17. This makes it possible to suppress the reduction in power from the turret 22 even when the shank 16 is cut in order to shorten the overhang amount of the shank 16.

[0022] (13) In the turning tool 10 according to any of (7) to (11) above, the multiple power receiving coils 111 are arranged alternately on both sides of a straight line parallel to the longitudinal direction. As a result, when the turning tool 10 is attached to the turret 22, even if the position of the shank 16 is offset from the center of the power transmitting coil 21, power can be received from the turret 22.

[0023] (14) According to the turning tool 10 described in (7) above, the shank 16 has a front end surface 61 to which the cutting tip 17 is attached, a rear end surface 62 opposite to the front end surface 61, and a side surface 1 located between the front end surface 61 and the rear end surface 62. Each of the multiple power receiving coil sections 111 has a front end portion 63 facing the front end surface 61 and a rear end portion 64 facing the rear end surface 62. Each of the multiple power receiving coil sections 111 is inclined with respect to the side surface 1 such that the distance between the front end portion 63 and the side surface 1 is smaller than the distance between the rear end portion 64 and the side surface 1. As a result, when the turning tool 10 is attached to the turret 22, the surface of the power receiving coil 11 is inclined in the direction of the central axis of the turret 22. Therefore, even if the power receiving coil section 111 is positioned protruding from the turret 22, it can receive power from the turret 22.

[0024] (15) The turning apparatus 100 according to the present disclosure comprises a turning tool 10 according to any of (1) to (14) above, and a turret 22 on which the turning tool 10 is mounted. The turret 22 includes a power transmission coil 21 that sends power to the power receiving coil 11. This allows power to be supplied from the turret 22 to the turning tool 10.

[0025] (16) According to the turning apparatus 100 described in (15) above, the power transmission coil 21 is arranged to wind around the rotation axis 29 of the turret 22. This allows power to be supplied from the power transmission coil 21 to the power receiving coil 11 regardless of the position of the turning tool 10 on the mounting surface 45 in the circumferential direction.

[0026] (17) According to the turning apparatus 100 described in (15) or (16) above, the turret 22 has a mounting surface 45 facing the turning tool 10. The mounting surface 45 is provided with a second recess 40. The power transmission coil 21 is positioned in the second recess 40. Therefore, the shank 16 can be pressed against the mounting surface 45 of the turret 22 without the power transmission coil 21 coming into contact with the turning tool 10. As a result, the turning tool 10 can be firmly attached to the turret 22.

[0027] (18) According to the turning apparatus 100 described in (17) above, the turret 22 is positioned in the second recess 40 and has a second non-metallic film 46 that covers the power transmission coil 21. This makes it possible to improve the waterproofness of the power transmission coil 21.

[0028] (19) According to the turning apparatus 100 described in (18) above, the second recess 40 has a second side wall surface 41 connected to the mounting surface 45 and a second bottom surface 42 connected to the second side wall surface 41. The second nonmetallic film 46 has a third surface 53 facing the second bottom surface 42 and a fourth surface 54 on the opposite side of the third surface 53. In the direction along the second side wall surface 41, the fourth surface 54 is located between the mounting surface 45 and the second bottom surface 42. This prevents the second nonmetallic film 46 from protruding from the second recess 40 and riding up onto the mounting surface 45 of the turret 22. Therefore, the shank 16 can be firmly attached to the mounting surface 45 of the turret 22.

[0029] (20) According to the turning apparatus 100 described in (15) above, the power transmission coil 21 is installed in a plurality of power transmission coil sections 211 arranged around the rotation axis 29 of the turret 22. This allows power to be supplied only to the power transmission coil sections 211 that require power. As a result, power consumption can be reduced.

[0030] (21) According to the turning apparatus 100 described in (20) above, the turret 22 has a mounting surface 45 facing the turning tool 10. The mounting surface 45 is provided with a second recess 40. Each of the multiple power transmission coils 211 is positioned in the second recess 40.

[0031] (22) According to the turning apparatus 100 described in (21) above, the turret 22 is positioned in the second recess 40 and has a second non-metallic film 46 that covers each of the multiple power transmission coil sections 211. This makes it possible to improve the waterproofness of each of the multiple power transmission coil sections 211.

[0032] (23) According to the turning apparatus 100 described in (22) above, the second recess 40 has a second side wall surface 41 connected to the mounting surface 45 and a second bottom surface 42 connected to the second side wall surface 41. The second nonmetallic film 46 has a third surface 53 facing the second bottom surface 42 and a fourth surface 54 on the opposite side of the third surface 53. In the direction along the second side wall surface 41, the fourth surface 54 is located between the mounting surface 45 and the second bottom surface 42. This prevents the second nonmetallic film 46 from protruding from the second recess 40 and riding up onto the mounting surface 45 of the turret 22. Therefore, the shank 16 can be firmly attached to the mounting surface 45 of the turret 22. [Details of the embodiments of this disclosure] Next, the details of the embodiments of this disclosure will be described with reference to the drawings. In the following drawings, identical or corresponding parts will be given the same reference numerals, and their descriptions will not be repeated.

[0033] <Turning machine> (First Embodiment) First, the configuration of the turning apparatus 100 according to the first embodiment will be described. Figure 1 is an overall configuration diagram showing the configuration of the turning apparatus 100 according to the first embodiment.

[0034] As shown in Figure 1, the turning apparatus 100 according to the first embodiment includes a machine tool 20 and a turning tool 10. The machine tool 20 mainly includes a turret 22 and a power supply 23. The turning tool 10 mainly includes a cutting tip 17, a shank 16, a power receiving coil 11, a rectifier circuit 19, a sensor 12, a control unit 13, and a wireless unit 14. The turret 22 includes a power transmitting coil 21. The turning tool 10 is mounted on the turret 22.

[0035] The transmitting coil 21 is connected to the power supply 23. The transmitting coil 21 sends power to the receiving coil 11. The receiving coil 11 receives power from the transmitting coil 21. The receiving coil 11 receives power from the transmitting coil 21 in a contactless manner. The receiving coil 11 is configured to receive power from the transmitting coil 21, for example, by electromagnetic induction. The receiving coil 11 faces the transmitting coil 21, for example. The receiving coil 11 is arranged coaxially with respect to the transmitting coil 21, for example.

[0036] The receiving coil 11 outputs the power received from the transmitting coil 21 to the rectifier circuit 19. The rectifier circuit 19 converts the alternating current received from the transmitting coil 21 into direct current. The power converted to direct current in the rectifier circuit 19 is output to the sensor 12. The sensor 12 is electrically connected to the receiving coil 11. The power converted to direct current in the rectifier circuit 19 drives the sensor 12. The sensor 12 is, for example, a sensor that detects the cutting state.

[0037] Sensor 12 is, for example, an acceleration sensor, a strain sensor, or a sound sensor. An acceleration sensor can measure, for example, the period and amplitude of vibration of the turning tool 10. A strain sensor can measure, for example, the degree of bending of the shank 16. A sound sensor can measure, for example, the frequency and amplitude of noise generated during cutting.

[0038] The control unit 13 is electrically connected to the power receiving coil 11. The power converted to DC in the rectifier circuit 19 is output to the control unit 13. The power converted to DC in the rectifier circuit 19 drives the control unit 13. The control unit 13 outputs the data detected by the sensor 12 to the wireless unit 14.

[0039] The wireless unit 14 is electrically connected to the receiving coil 11. The power converted to DC in the rectifier circuit 19 is output to the wireless unit 14. The power converted to DC in the rectifier circuit 19 drives the wireless unit 14. The wireless unit 14 transmits the data detected by the sensor 12 to the outside. The control unit 13 controls the wireless unit 14 and outputs the data detected by the sensor 12 from the wireless unit 14 to the outside.

[0040] (Modification of the first embodiment) Next, the configuration of the turning apparatus 100 according to a modification of the first embodiment will be described. The configuration of the turning apparatus 100 according to a modification of the first embodiment differs from the configuration of the turning apparatus 100 according to the first embodiment mainly in that each of the machine tool 20 and the turning tool 10 has a resonant capacitor, while the other configurations are the same as those of the turning apparatus 100 according to the first embodiment. The following description will focus on the configurations that differ from the turning apparatus 100 according to the first embodiment.

[0041] Figure 2 is an overall configuration diagram showing the configuration of a turning machine 100 according to a modified example of the first embodiment. As shown in Figure 2, the machine tool 20 has a first resonant capacitor 25. The first resonant capacitor 25 is connected to the power supply 23 and the power transmission coil 21, respectively. One end of the first resonant capacitor 25 is connected to the power supply 23, and the other end of the first resonant capacitor 25 is connected to the power transmission coil 21. The first resonant capacitor 25 and the power transmission coil 21 constitute a first series resonant circuit.

[0042] As shown in Figure 2, the turning tool 10 has a second resonant capacitor 18. The second resonant capacitor 18 is connected to the rectifier circuit 19 and the power receiving coil 11, respectively. One end of the second resonant capacitor 18 is connected to the rectifier circuit 19, and the other end of the second resonant capacitor 18 is connected to the power receiving coil 11. The second resonant capacitor 18 is connected in series with the power receiving coil 11. The second resonant capacitor 18 and the power receiving coil 11 constitute a second series resonant circuit.

[0043] In the turning apparatus 100 according to a modification of the first embodiment, power is transmitted from the transmitting coil 21 to the receiving coil 11 using magnetic resonance. Specifically, power is transmitted from the transmitting coil 21 to the receiving coil 11 by magnetically coupling the transmitting coil 21 and the receiving coil 11 through magnetic field resonance. The inductances of the transmitting coil 21 and the receiving coil 11 are appropriately determined so that the Q value, which indicates the resonance strength, and the degree of coupling are increased. This makes it possible to improve the power transmission efficiency.

[0044] (Second Embodiment) Next, the configuration of the turning apparatus 100 according to the second embodiment will be described. The configuration of the turning apparatus 100 according to the second embodiment differs from the configuration of the turning apparatus 100 according to the first embodiment mainly in that the power transmission coil 21 is installed in multiple power transmission coil sections 211, while the other configurations are the same as those of the turning apparatus 100 according to the first embodiment. The following description will focus on the configurations that differ from the turning apparatus 100 according to the first embodiment.

[0045] Figure 3 is an overall configuration diagram showing the configuration of the turning apparatus 100 according to the second embodiment. As shown in Figure 3, the machine tool 20 of the turning apparatus 100 according to the second embodiment has a power transmission coil 21, a switch 27, a control device 26, and a power supply 23. The power transmission coil 21 is installed in a plurality of power transmission coil units 211. Note that the number of power transmission coil units 211 is not limited to three. The number of power transmission coil units 211 may be four or more, six or more, eight or more, or twelve or more.

[0046] The switch 27 has multiple switch units 212. The number of switch units 212 is not limited to three. There may be four or more, six or more, eight or more, or twelve or more switch units 212. The control device 26 is electrically connected to each of the multiple switch units 212. The control device 26 controls the opening and closing of each of the multiple switch units 212. Each of the multiple switch units 212 may be located inside the turret 22 or outside the turret 22.

[0047] As shown in Figure 3, each of the multiple power transmission coil units 211 is located on the turret 22. One switch unit 212 is connected in series to each power transmission coil unit 211. This allows power to be selectively supplied from the power supply 23 to the power transmission coil unit 211 that is in use. Power can be prevented from being supplied to the power transmission coil unit 211 that is not in use, thereby suppressing the supply of unnecessary power. A machine tool 20 having multiple power transmission coil units 211 (see Figure 3) may be combined with a turning tool 10 having a single power receiving coil 11 (see Figure 1 or Figure 2), or with a turning tool 10 having multiple power receiving coil units 111 (see Figure 4).

[0048] (Third embodiment) Next, the configuration of the turning apparatus 100 according to the third embodiment will be described. The configuration of the turning apparatus 100 according to the third embodiment differs from the configuration of the turning apparatus 100 according to the first embodiment mainly in that the power receiving coil 11 has a plurality of power receiving coil sections 111, while the other configurations are the same as those of the turning apparatus 100 according to the first embodiment. The following description will focus on the configurations that differ from the turning apparatus 100 according to the first embodiment.

[0049] Figure 4 is an overall configuration diagram showing the configuration of the turning apparatus 100 according to the third embodiment. As shown in Figure 4, the cutting tool of the turning apparatus 100 according to the third embodiment mainly comprises a cutting tip 17, a shank 16, a power receiving coil 11, a rectifier circuit 19, a diode 3, a sensor 12, a control unit 13, and a wireless unit 14. The power receiving coil 11 has a plurality of power receiving coil sections 111. Note that the number of power receiving coil sections 111 is not limited to three. The number of power receiving coil sections 111 may be four or more, six or more, eight or more, or twelve or more.

[0050] The rectifier circuit 19 has multiple rectifier circuit sections 112. The number of rectifier circuit sections 112 is not limited to three. There may be six or more rectifier circuit sections 112, or even ten or more. Each of the multiple rectifier circuit sections 112 is connected in series with each of the multiple power receiving coil sections 111.

[0051] Diode 3 has multiple diode sections 113. The number of diode sections 113 is not limited to three. There may be six or more diode sections 113, or even ten or more. Each of the multiple diode sections 113 is connected in series with each of the multiple rectifier circuit sections 112.

[0052] As shown in Figure 4, one rectifier circuit section 112 and one diode section 113 are connected in series to one power receiving coil section 111. Each of the multiple power receiving coil sections 111 is connected in parallel. A turning tool 10 having multiple power receiving coil sections 111 (see Figure 4) may be combined with a machine tool 20 having a single power transmitting coil 21 (see Figure 1 or Figure 2), or with a machine tool 20 having multiple power transmitting coil sections 211 (see Figure 3).

[0053] <Turning Tools> (First Embodiment) Next, the configuration of the turning tool 10 according to the first embodiment will be described. Figure 5 is a schematic plan view showing the configuration of the turning tool 10 according to the first embodiment.

[0054] As shown in Figure 5, the turning tool 10 according to the first embodiment mainly comprises a cutting tip 17, a shank 16, a power receiving coil 11, a base plate 33, and a fixing part 34. A mounting groove 35 is provided at the tip of the shank 16. The base plate 33 and the cutting tip 17 are arranged in the mounting groove 35. The base plate 33 is positioned between the cutting tip 17 and the shank 16. The fixing part 34 fixes the cutting tip 17 to the shank 16. The shank 16 holds the cutting tip 17. The power receiving coil 11 is located on the shank 16. The shank 16 is made of metal.

[0055] Figure 6 is a schematic cross-sectional view along the line VI-VI in Figure 5. As shown in Figure 6, a first recess 30 is provided on the side surface 1 of the shank 16. The power receiving coil 11 is positioned in the first recess 30. The first recess 30 has a first side wall surface 31 and a first bottom surface 32. The first side wall surface 31 is connected to the side surface 1. The first bottom surface 32 is connected to the first side wall surface 31. The central axis of the power receiving coil 11 is, for example, perpendicular to the first bottom surface 32.

[0056] The power receiving coil 11 has, for example, a first conductive coil portion 8 and a first insulating coating portion 9. The first conductive coil portion 8 is covered by the first insulating coating portion 9. The power receiving coil 11 may be, for example, a flexible printed circuit (FPC). The central axis of the first conductive coil portion 8 is, for example, perpendicular to the first base surface 32. From another point of view, the first conductive coil portion 8 is wound around a straight line perpendicular to the first base surface 32.

[0057] The power receiving coil 11 has a fifth surface 55 and a sixth surface 56. The fifth surface 55 is in contact with the first bottom surface 32. The sixth surface 56 is on the opposite side of the fifth surface 55. In the direction along the first side wall surface 31, the second surface 52 is located between the side surface 1 and the first bottom surface 32. From another perspective, the sixth surface 56 is located inside the side surface 1.

[0058] (Second Embodiment) Next, the configuration of the turning tool 10 according to the second embodiment will be described. The configuration of the turning tool 10 according to the second embodiment differs from the configuration of the turning tool 10 according to the first embodiment mainly in that the turning tool 10 has a first non-metallic film 38, while the other configurations are the same as those of the turning tool 10 according to the first embodiment. The following description will focus on the configurations that differ from the turning tool 10 according to the first embodiment.

[0059] Figure 7 is a schematic cross-sectional view showing the configuration of the turning tool 10 according to the second embodiment. The cross-section shown in Figure 7 corresponds to the cross-section along the line VI-VI in Figure 5.

[0060] As shown in Figure 7, the turning tool 10 has a first non-metallic film 38. The first non-metallic film 38 is positioned on the power receiving coil 11. The first non-metallic film 38 is positioned in the first recess 30. The first non-metallic film 38 covers the power receiving coil 11. The first non-metallic film 38 has a first surface 51 and a second surface 52. The first surface 51 faces the first bottom surface 32. The first surface 51 is in contact with the sixth surface 56. The second surface 52 is located on the opposite side of the first surface 51. In the direction along the first side wall surface 31, the second surface 52 is located between the side surface 1 and the first bottom surface 32. In other words, the second surface 52 is located inside the side surface 1.

[0061] (Third embodiment) Next, the configuration of the turning tool 10 according to the third embodiment will be described. The configuration of the turning tool 10 according to the third embodiment differs from the configuration of the turning tool 10 according to the second embodiment mainly in that the width of the first recess 30 is smaller than the width of the side surface 1 of the shank 16, while the other configurations are the same as those of the turning tool 10 according to the second embodiment. The following description will focus on the configurations that differ from the turning tool 10 according to the second embodiment.

[0062] Figure 8 is a schematic plan view showing the configuration of a turning tool 10 according to the third embodiment. As shown in Figure 8, a first recess 30 is provided on the side surface 1 of the shank 16. The shank 16 has a front end surface 61 and a rear end surface 62. The front end surface 61 is provided with a mounting groove 35 for the cutting tip 17. The rear end surface 62 is on the opposite side of the front end surface 61. The direction from the front end surface 61 to the rear end surface 62 is the longitudinal direction of the shank 16. When viewed perpendicular to the first bottom surface 32, the direction perpendicular to the longitudinal direction of the shank 16 is the short direction of the shank 16.

[0063] As shown in Figure 8, when viewed perpendicular to the first base surface 32, the width of the first recess 30 in the longitudinal direction of the shank 16 is greater than the width of the first recess 30 in the transverse direction of the shank 16. When viewed perpendicular to the first base surface 32, the width of the first recess 30 in the transverse direction of the shank 16 (first width W1) is smaller than the width of the shank 16 in the transverse direction of the shank 16 (second width W2). Therefore, the rigidity of the shank 16 can be increased compared to the case where the width of the first recess 30 is the same as the width of the shank 16.

[0064] Figure 9 is a schematic cross-sectional view along the line IX-IX in Figure 8. As shown in Figure 9, the first non-metallic film 38 is provided on the power receiving coil 11. The first recess 30 is exposed on the rear end surface 62. The first bottom surface 32 of the first recess 30 is connected to the rear end surface 62. In the longitudinal direction of the shank 16, the width of the first non-metallic film 38 may be the same as the width of the power receiving coil 11. In the longitudinal direction of the shank 16, the width of the power receiving coil 11 may be the same as the width of the first bottom surface 32.

[0065] (Fourth Embodiment) Next, the configuration of the turning tool 10 according to the fourth embodiment will be described. The configuration of the turning tool 10 according to the fourth embodiment differs from the configuration of the turning tool 10 according to the first to third embodiments mainly in that the power receiving coil 11 has a first power receiving coil section 101 and a second power receiving coil section 102. The other configurations are the same as those of the turning tool 10 according to the first to third embodiments. The following description will focus on the configurations that differ from the turning tool 10 according to the first to third embodiments.

[0066] Figure 10 is a schematic perspective view showing the configuration of a turning tool 10 according to the fourth embodiment. As shown in Figure 10, the power receiving coil 11 has a first power receiving coil section 101 and a second power receiving coil section 102. The second power receiving coil section 102 is spaced apart from the first power receiving coil section 101. The shank 16 has a first side surface 1 and a second side surface 2. The second side surface 2 is connected to the first side surface 1. The second side surface 2 is inclined with respect to the first side surface 1. For example, the second side surface 2 is perpendicular to the first side surface 1.

[0067] The first power receiving coil section 101 is provided on the first side surface 1. The first power receiving coil section 101 may be exposed to the first side surface 1 or positioned inside the first side surface 1. The second power receiving coil section 102 is provided on the second side surface 2. The second power receiving coil section 102 may be exposed to the second side surface 2 or positioned inside the second side surface 2. Each of the first power receiving coil section 101 and the second power receiving coil section 102 may be positioned in the first recess 30. The first non-metallic film 38 may be positioned on each of the first power receiving coil section 101 and the second power receiving coil section 102.

[0068] (Fifth embodiment) Next, the configuration of the turning tool 10 according to the fifth embodiment will be described. The configuration of the turning tool 10 according to the fifth embodiment differs from the configuration of the turning tool 10 according to the first embodiment mainly in that the power receiving coil 11 has a plurality of power receiving coil sections 111 arranged along the longitudinal direction of the shank 16, while the other configurations are the same as those of the turning tool 10 according to the first embodiment. The following description will focus on the configurations that differ from the turning tool 10 according to the first embodiment.

[0069] Figure 11 is a schematic plan view showing the configuration of a turning tool 10 according to the fifth embodiment. As shown in Figure 11, the power receiving coil 11 has a plurality of power receiving coil sections 111. Each of the plurality of power receiving coil sections 111 is arranged along the longitudinal direction of the shank 16. The central axis of each of the plurality of power receiving coil sections 111 is, for example, perpendicular to the side surface 1. The shank 16 has a front end surface 61 and a rear end surface 62. The front end surface 61 is provided with a mounting groove 35 for the cutting tip 17. The rear end surface 62 is on the opposite side of the front end surface 61. The direction from the front end surface 61 to the rear end surface 62 is the longitudinal direction of the shank 16. When viewed perpendicular to the side surface 1 of the shank 16, the direction perpendicular to the longitudinal direction of the shank 16 is the short direction of the shank 16.

[0070] Figure 12 is a schematic cross-sectional view along the line XII-XII in Figure 11. As shown in Figure 12, each of the multiple power receiving coils 111 faces the side surface 1. Each of the multiple power receiving coils 111 may be located inside the shank 16 or exposed on the side surface 1 of the shank 16. Each of the multiple power receiving coils 11 is, for example, electrically connected in parallel.

[0071] Figure 13 is an enlarged schematic cross-sectional view of region XIII in Figure 12. As shown in Figure 13, each of the multiple power receiving coil sections 111 has, for example, a first conductive coil section 8 and a first insulating coating section 9. The first conductive coil section 8 is covered by the first insulating coating section 9. The power receiving coil 11 may be, for example, a flexible printed circuit (FPC). The central axis of the first conductive coil section 8 is, for example, perpendicular to the side surface 1 of the shank 16. From another point of view, the first conductive coil section 8 is wound around a straight line perpendicular to the side surface 1 of the shank 16.

[0072] The power receiving coil 11 of the turning tool 10 according to the fifth embodiment has a plurality of power receiving coil sections 111 arranged along the longitudinal direction of the shank 16. Therefore, even when the shank 16 is cut to shorten the overhang amount of the shank 16, power can still be received from the power transmitting coil 21 using the remaining power receiving coil sections 111.

[0073] (Sixth Embodiment) Next, the configuration of the turning tool 10 according to the sixth embodiment will be described. The configuration of the turning tool 10 according to the sixth embodiment differs from the configuration of the turning tool 10 according to the fifth embodiment mainly in that the turning tool 10 has a first non-metallic film 38, while the other configurations are the same as those of the turning tool 10 according to the fifth embodiment. The following description will focus on the configurations that differ from the turning tool 10 according to the fifth embodiment.

[0074] Figure 14 is a schematic plan view showing the configuration of a turning tool 10 according to the sixth embodiment. As shown in Figure 14, the power receiving coil 11 has a plurality of power receiving coil sections 111. A first recess 30 is provided on the side surface 1 of the shank 16. The plurality of power receiving coil sections 111 are arranged in the first recess 30.

[0075] Figure 15 is a schematic cross-sectional view along the line XV-XV in Figure 14. As shown in Figure 15, the turning tool 10 has a first non-metallic film 38. The first non-metallic film 38 is located in the first recess 30. The first non-metallic film 38 covers each of the multiple power receiving coil sections 111. The first recess 30 has a first side wall surface 31 and a first bottom surface 32. The first side wall surface 31 is connected to the side surface 1. The first bottom surface 32 is connected to the first side wall surface 31.

[0076] The first nonmetallic film 38 has a first surface 51 and a second surface 52. The first surface 51 faces the first bottom surface 32. The second surface 52 is on the opposite side of the first surface 51. In the direction along the first side wall surface 31, the second surface 52 is located between the side surface 1 and the first bottom surface 32. The second surface 52 is located inside the side surface 1 of the shank 16.

[0077] The first non-metallic film 38 is, for example, a translucent resin. The translucent resin may be transparent or semi-transparent. The material constituting the translucent resin is, for example, acrylic. When the first non-metallic film 38 is a translucent resin, the user of the turning tool 10 can see the position of each of the multiple power receiving coils 111 located beneath the first non-metallic film 38. Therefore, when cutting the shank 16 of the turning tool 10, the cutting position can be seen without exposing each of the power receiving coils 111.

[0078] (Seventh Embodiment) Next, the configuration of the turning tool 10 according to the seventh embodiment will be described. The configuration of the turning tool 10 according to the seventh embodiment differs from the configuration of the turning tool 10 according to the sixth embodiment mainly in that the first non-metallic film 38 is made of a non-transparent resin, while the other configurations are the same as those of the turning tool 10 according to the sixth embodiment. The following description will focus on the configurations that differ from the turning tool 10 according to the sixth embodiment.

[0079] Figure 16 is a schematic plan view showing the configuration of a turning tool 10 according to the seventh embodiment. The first non-metallic film 38 may be, for example, a non-transparent resin. The material constituting the non-transparent resin is, for example, PTFE (polytetrafluoroethylene). A mark 4 indicating the cutting position of the shank 16 is provided on the side surface 1 of the shank 16. The mark 4 indicating the cutting position of the shank 16 may be provided by writing on the side surface 1 of the shank 16 with a marker pen or the like, or by forming a groove on the side surface 1 of the shank 16.

[0080] If the first non-metallic film 38 is made of a non-transparent resin, the user of the turning tool 10 cannot see the position of each of the multiple power receiving coils 111 located beneath the first non-metallic film 38. However, since the shank 16 is provided with a mark 4 indicating the cutting position, even if the first non-metallic film 38 is made of a non-transparent resin, the cutting position can be recognized without exposing each of the power receiving coils 111.

[0081] (Eighth embodiment) Next, the configuration of the turning tool 10 according to the eighth embodiment will be described. The configuration of the turning tool 10 according to the eighth embodiment differs from the configuration of the turning tool 10 according to the sixth embodiment mainly in that there are multiple first recesses 30, while the other configurations are the same as those of the turning tool 10 according to the sixth embodiment. The following description will focus on the configurations that differ from the turning tool 10 according to the sixth embodiment.

[0082] Figure 17 is a schematic plan view showing the configuration of the turning tool 10 according to the eighth embodiment. Figure 18 is a schematic cross-sectional view along the line XVIII-XVIII in Figure 17. As shown in Figures 17 and 18, a plurality of first recesses 30 may be provided on the side surface 1 of the shank 16. The first nonmetallic film 38 has a plurality of first nonmetallic film portions 311. Each of the plurality of first nonmetallic film portions 311 is located in each of the plurality of first recesses 30. Each of the plurality of power receiving coil portions 111 is located in each of the plurality of first recesses 30. In one first recess 30, one power receiving coil portion 111 and one first nonmetallic portion are located. In the longitudinal direction of the shank 16, the width of the first nonmetallic film portion 311 may be greater than the width of the power receiving coil portion 111.

[0083] (Ninth Embodiment) Next, the configuration of the turning tool 10 according to the ninth embodiment will be described. The configuration of the turning tool 10 according to the ninth embodiment differs from the configuration of the turning tool 10 according to the fifth embodiment mainly in that, among the multiple power receiving coil sections 111, the distance between two adjacent power receiving coil sections 111 decreases as it moves away from the cutting tip 17. The other configurations are the same as those of the turning tool 10 according to the fifth embodiment. The following description will focus on the configurations that differ from the turning tool 10 according to the fifth embodiment.

[0084] Figure 19 is a schematic plan view showing the configuration of the turning tool 10 according to the ninth embodiment. Figure 20 is a schematic cross-sectional view along the line XX-XX in Figure 19. As shown in Figures 19 and 20, the distance between two adjacent power receiving coils 111 decreases as they move away from the cutting tip 17. In other words, the distance between two adjacent power receiving coils 111 decreases as they move from the front end face 61 to the rear end face 62. The power receiving coils 111 are loosely arranged on the front end face 61 side and densely arranged on the rear end face 62 side.

[0085] (Tenth embodiment) Next, the configuration of the turning tool 10 according to the 10th embodiment will be described. The configuration of the turning tool 10 according to the 10th embodiment differs from the configuration of the turning tool 10 according to the 5th embodiment mainly in that the multiple power receiving coils 111 are arranged alternately on both sides of a straight line parallel to the longitudinal direction, while the other configurations are the same as those of the turning tool 10 according to the 5th embodiment. The following description will focus on the configurations that differ from the turning tool 10 according to the 5th embodiment.

[0086] Figure 21 is a schematic plan view showing the configuration of a turning tool 10 according to the tenth embodiment. As shown in Figure 21, the multiple power receiving coils 111 are alternately arranged on both sides of a straight line A parallel to the longitudinal direction of the shank 16. Specifically, the centers of the multiple power receiving coils 111 are alternately arranged on both sides of the straight line A. From another perspective, the multiple power receiving coils 111 are arranged in a staggered pattern. When viewed perpendicular to the side surface 1, half of the multiple power receiving coils 111 may be arranged on one side of the straight line, and the remaining half of the multiple power receiving coils 111 may be arranged on the other side of the straight line.

[0087] (11th embodiment) Next, the configuration of the turning tool 10 according to the 11th embodiment will be described. The configuration of the turning tool 10 according to the 11th embodiment differs from the configuration of the turning tool 10 according to the 5th embodiment mainly in that each of the multiple power receiving coils 111 is inclined with respect to the side surface 1 of the shank 16, while the other configurations are the same as those of the turning tool 10 according to the 5th embodiment. The following description will focus on the configurations that differ from the turning tool 10 according to the 5th embodiment.

[0088] Figure 22 is a schematic plan view showing the configuration of the turning tool 10 according to the 11th embodiment. Figure 23 is a schematic cross-sectional view along the line XXIII-XXIII in Figure 22. As shown in Figures 22 and 23, the shank 16 has a front end face 61, a rear end face 62, and a side surface 1. The front end face 61 is the surface to which the cutting tip 17 is attached. The rear end face 62 is on the opposite side from the front end face 61. The side surface 1 is located between the front end face 61 and the rear end face 62.

[0089] As shown in Figure 23, each of the multiple power receiving coils 111 has a front end 63 and a rear end 64. The front end 63 faces the front end surface 61. The rear end 64 faces the rear end surface 62. As shown in Figure 23, each of the multiple power receiving coils 111 is inclined with respect to the side surface 1 such that the distance between the front end 63 and the side surface 1 (first distance D1) is smaller than the distance between the rear end 64 and the side surface 1 (second distance D2). When the turning tool 10 is mounted on the mounting surface 45 of the turret 22, each of the multiple power receiving coils 11 is inclined toward the rotation axis 29 of the turret 22. Therefore, each of the multiple power receiving coils 11 can efficiently receive power from the power transmitting coil 21.

[0090] <Turret> (First Embodiment) Next, the configuration of the turret 22 according to the first embodiment will be described. Figure 24 is a schematic plan view showing the configuration of the turret 22 according to the first embodiment. As shown in Figure 24, the turret 22 has a mounting surface 45, a rotating shaft 29, and a power transmission coil 21. A turning tool 10 is mounted on the mounting surface 45. The mounting surface 45 faces the turning tool 10. The turret 22 is configured to be rotatable around the rotating shaft 29. By rotating the turret 22, the turning tool 10 rotates around the rotating shaft 29. Multiple turning tools 10 may be mounted on the turret 22. By rotating the turret 22, a desired turning tool 10 can be positioned at a desired location among the multiple turning tools 10.

[0091] As shown in Figure 24, the transmission coil 21 is arranged to wind around the rotation axis 29 of the turret 22. The central axis of the transmission coil 21 is, for example, parallel to the rotation axis 29 of the turret 22. The central axis of the transmission coil 21 may also coincide with the rotation axis 29 of the turret 22. The central axis of the transmission coil 21 extends perpendicularly to the mounting surface 45 of the turret 22, for example. The number of turns of the transmission coil 21 is not particularly limited, but is, for example, 2. The number of turns of the transmission coil 21 may be 3 or more. The transmission coil 21 is provided, for example, on the mounting surface 45 of the turret 22.

[0092] As shown in Figure 24, when viewed perpendicular to the mounting surface 45 of the turret 22, the transmitting coil 21 is positioned to overlap with the receiving coil 11. From another viewpoint, the transmitting coil 21 faces the receiving coil 11. The central axis of the transmitting coil 21 may be parallel to the central axis of the receiving coil 11.

[0093] Figure 25 is a schematic cross-sectional view along the line XXV-XXV in Figure 24. As shown in Figure 25, a second recess 40 is provided in the mounting surface 45 of the turret 22. The second recess 40 has a second side wall surface 41 and a second bottom surface 42. The second side wall surface 41 is connected to the mounting surface 45. The second bottom surface 42 is connected to the second side wall surface 41. The power transmission coil 21 is located in the second recess 40. The power transmission coil 21 may be in contact with the second side wall surface 41 and the second bottom surface 42, respectively.

[0094] The power transmission coil 21 has, for example, a second conductive coil portion 43 and a second insulating coating portion 44. The second conductive coil portion 43 is covered by the second insulating coating portion 44. The power transmission coil 21 may be, for example, a flexible printed circuit (FPC). The second insulating coating portion 44 may be in contact with the second side wall surface 41 and the second bottom surface 42, respectively.

[0095] (Second Embodiment) Next, the configuration of the turret 22 according to the second embodiment will be described. The configuration of the turret 22 according to the second embodiment differs from the configuration of the turret 22 according to the first embodiment mainly in that the power transmission coil 21 is installed in multiple power transmission coil sections 211, while other configurations are the same as those of the turret 22 according to the first embodiment. The following description will focus on the configurations that differ from the turret 22 according to the first embodiment.

[0096] Figure 26 is a schematic plan view showing the configuration of the turret 22 according to the second embodiment. Figure 27 is a schematic cross-sectional view along the line XXVII-XXVII in Figure 26. As shown in Figure 26, the power transmission coil 21 is installed in a plurality of power transmission coil sections 211. Each of the plurality of power transmission coil sections 211 is arranged around the rotation axis 29 of the turret 22. Each of the plurality of power transmission coil sections 211 may be arranged radially with respect to the rotation axis 29.

[0097] As shown in Figure 26, the central axis of each of the multiple power transmission coil sections 211 is, for example, parallel to the rotation axis 29 of the turret 22. The central axis of each of the multiple power transmission coil sections 211 extends perpendicularly to the mounting surface 45 of the turret 22, for example. The number of turns of each of the multiple power transmission coil sections 211 is not particularly limited, but is, for example, 2. The number of turns of the power transmission coil 21 may be 3 or more. Each of the multiple power transmission coil sections 211 is, for example, provided on the mounting surface 45 of the turret 22. The number of power transmission coil sections 211 is not particularly limited, but is, for example, 12.

[0098] As shown in Figure 26, when viewed perpendicular to the mounting surface 45 of the turret 22, the transmitting coil section 211 is positioned to overlap with the receiving coil section 111. From another perspective, the transmitting coil section 211 faces the receiving coil section 111. The central axis of the transmitting coil section 211 may be parallel to the central axis of the receiving coil section 111.

[0099] As shown in Figures 26 and 27, the mounting surface 45 of the turret 22 may be provided with a plurality of second recesses 40. Each of the plurality of power transmission coils 211 may be provided in each of the plurality of second recesses 40. Each of the plurality of second recesses 40 may be arranged radially when viewed from the rotation axis 29. Each of the plurality of power transmission coils 211 may be positioned on the second bottom surface 42 of the second recess 40.

[0100] (Third embodiment) Next, the configuration of the turret 22 according to the third embodiment will be described. The configuration of the turret 22 according to the third embodiment differs from the configuration of the turret 22 according to the first embodiment mainly in that the turret 22 has a second non-metallic film 46, while other configurations are the same as those of the turret 22 according to the first embodiment. The following description will focus on the configurations that differ from the turret 22 according to the first embodiment.

[0101] Figure 28 is a schematic plan view showing the configuration of the turret 22 according to the third embodiment. Figure 29 is a schematic cross-sectional view along the line XXIX-XXIX in Figures 28 and 30. As shown in Figures 28 and 29, the turret 22 has a second nonmetallic film 46. The second nonmetallic film 46 is located in the second recess 40. The second nonmetallic film 46 covers the power transmission coil 21. The second nonmetallic film 46 is in contact with the power transmission coil 21. The second recess 40 surrounds the rotation axis 29 of the turret 22. The second nonmetallic film 46 surrounds the rotation axis 29 of the turret 22.

[0102] The second nonmetallic film 46 has a third surface 53 and a fourth surface 54. The third surface 53 faces the second bottom surface 42 of the second recess 40. The third surface 53 is in contact with the power transmission coil 21. The fourth surface 54 is on the opposite side of the third surface 53. In the direction along the second side wall surface 41, the fourth surface 54 is located between the mounting surface 45 and the second bottom surface 42. The fourth surface 54 is located inside the mounting surface 45.

[0103] (Fourth Embodiment) Next, the configuration of the turret 22 according to the fourth embodiment will be described. The configuration of the turret 22 according to the fourth embodiment differs from the configuration of the turret 22 according to the third embodiment mainly in that the second recess 40 is formed radially, while the other configurations are the same as those of the turret 22 according to the third embodiment. The following description will focus on the configurations that differ from the turret 22 according to the third embodiment.

[0104] Figure 30 is a schematic plan view showing the configuration of the turret 22 according to the fourth embodiment. As shown in Figures 29 and 30, each of the plurality of second recesses 40 is formed radially when viewed from the rotation axis 29 of the turret 22. Each of the plurality of second recesses 40 extends radially in the direction of the turret 22. When viewed in a direction parallel to the rotation axis 29 of the turret 22, the shape of each of the plurality of second recesses 40 is, for example, rectangular.

[0105] Each of the plurality of second nonmetallic films 46 is positioned in each of the plurality of second recesses 40. Each of the plurality of second nonmetallic films 46 covers the power transmission coil 21. The plurality of second nonmetallic films 46 are formed radially when viewed from the rotation axis 29 of the turret 22. The plurality of second nonmetallic films 46 are formed radially when viewed from the rotation axis 29 of the turret 22. The plurality of second nonmetallic films 46 extend radially in the direction of the turret 22. When viewed in a direction parallel to the rotation axis 29 of the turret 22, the shape of each of the plurality of second nonmetallic films 46 is, for example, rectangular.

[0106] (Fifth embodiment) Next, the configuration of the turret 22 according to the fifth embodiment will be described. The configuration of the turret 22 according to the fifth embodiment differs from the configuration of the turret 22 according to the second embodiment mainly in that the width of the second recess 40 is smaller than the width of the side surface 1 of the shank 16, while the other configurations are the same as those of the turret 22 according to the second embodiment. The following description will focus on the configurations that differ from the turret 22 according to the second embodiment.

[0107] Figure 31 is a schematic plan view showing the configuration of the turret 22 according to the fifth embodiment. Figure 32 is a schematic cross-sectional view along the line XXXII-XXXII in Figure 31. As shown in Figures 31 and 32, each of the plurality of power transmission coil sections 211 is arranged around the rotation axis 29 of the turret 22. The turret 22 has a mounting surface 45 facing the turning tool 10. The mounting surface 45 is provided with a plurality of second recesses 40. Each of the plurality of power transmission coil sections 211 is located in each of the plurality of second recesses 40. The second nonmetallic film 46 has a plurality of second nonmetallic film sections 114. Each of the plurality of second nonmetallic film sections 114 is located in each of the plurality of second recesses 40. Each of the plurality of second nonmetallic film sections 114 covers each of the plurality of power transmission coil sections 211.

[0108] Each of the plurality of second recesses 40 has a second side wall surface 41 and a second bottom surface 42. The second side wall surface 41 is connected to the mounting surface 45. The second bottom surface 42 is connected to the second side wall surface 41. Each of the plurality of second nonmetallic film portions 114 has a third surface 53 and a fourth surface 54. The third surface 53 is opposite to the second bottom surface 42. The fourth surface 54 is on the opposite side of the third surface 53. In the direction along the second side wall surface 41, the fourth surface 54 is located between the mounting surface 45 and the second bottom surface 42.

[0109] The cross-section shown in Figure 32 is a cross-section perpendicular to the radial direction of the turret 22. As shown in Figure 32, in a cross-section perpendicular to the radial direction of the turret 22, the width of the second recess 40 (third width W3) may be smaller than the width of the side surface 1 of the shank 16 (second width W2). In a cross-section perpendicular to the radial direction of the turret 22, the width of the second recess 40 (third width W3) may be smaller than the width of the first recess 30 (first width W1). In a cross-section perpendicular to the radial direction of the turret 22, the width of the power receiving coil section 111 may be larger than the width of the power transmitting coil section 211.

[0110] <Combination of turning tools and turrets> A turning tool 10 from any of the first to fourth embodiments can be combined with a turret 22 from any of the first to fifth embodiments. A turning tool 10 from any of the fifth to eleventh embodiments can be combined with a turret 22 from the second or fifth embodiment. A turning tool 10 from any of the fifth to eleventh embodiments may be combined with a turret 22 from any of the first, third, and fourth embodiments.

[0111] <Effects and Effects> Next, the effects and benefits of the turning tool 10 and turning apparatus 100 according to this disclosure will be described.

[0112] According to the turning tool 10 of this disclosure, the power receiving coil 11 receives power from the power transmitting coil 21 in a non-contact manner. The sensor 12 is electrically connected to the power receiving coil 11. The wireless unit 14 transmits the data detected by the sensor 12 to the outside. This allows power to be supplied to the sensor 12 in a non-contact manner. Therefore, it is possible to suppress interference with the rotation of the turret 22 while ensuring high water resistance.

[0113] The turning tool 10 according to this disclosure further comprises a cutting tip 17 and a shank 16 that holds the cutting tip 17. The power receiving coil 11 is located on the shank 16. This allows the area of ​​the power receiving coil 11 to be increased.

[0114] According to the turning tool 10 of this disclosure, a first recess 30 is provided on the side surface 1 of the shank 16. The power receiving coil 11 is positioned in the first recess 30. Therefore, the side surface 1 of the shank 16 can be pressed against the turret 22 without the power receiving coil 11 coming into contact with the turret 22. As a result, the turning tool 10 can be firmly attached to the turret 22.

[0115] The turning tool 10 according to this disclosure further has a first non-metallic film 38 that is arranged in the first recess 30 and covers the power receiving coil 11. This makes it possible to improve the waterproofness of the power receiving coil 11.

[0116] According to the turning tool 10 of this disclosure, the first recess 30 has a first side wall surface 31 connected to the side surface 1 and a first bottom surface 32 connected to the first side wall surface 31. The first nonmetallic film 38 has a first surface 51 facing the first bottom surface 32 and a second surface 52 on the opposite side of the first surface 51. In the direction along the first side wall surface 31, the second surface 52 is located between the side surface 1 and the first bottom surface 32. This prevents the first nonmetallic film 38 from protruding from the first recess 30 and riding up onto the side surface 1 of the shank 16. Therefore, the side surface 1 of the shank 16 can be firmly attached to the turret 22.

[0117] According to the turning tool 10 of this disclosure, the power receiving coil 11 has a first power receiving coil section 101 and a second power receiving coil section 102 spaced apart from the first power receiving coil section 101. The shank 16 has a first side surface 1 and a second side surface 2 that is connected to the first side surface 1 and inclined with respect to the first side surface 1. The first power receiving coil section 101 is provided on the first side surface 1. The second power receiving coil section 102 is provided on the second side surface 2. This allows for efficient power reception from the turret 22 regardless of the surface to which it is attached.

[0118] According to the turning tool 10 of this disclosure, the power receiving coil 11 has a plurality of power receiving coil sections 111 arranged along the longitudinal direction of the shank 16. This allows power to be received from the turret 22 even when the shank 16 is cut to shorten the overhang amount of the shank 16.

[0119] According to the turning tool 10 of this disclosure, the side surface 1 of the shank 16 is provided with a first recess 30 in which each of the multiple power receiving coil portions 111 is arranged. The turning tool 10 is provided with a first non-metallic film 38 that is arranged in the first recess 30 and covers each of the multiple power receiving coil portions 111. This makes it possible to improve the waterproofness of each of the multiple power receiving coil portions 111.

[0120] According to the turning tool 10 of this disclosure, the first recess 30 has a first side wall surface 31 connected to the side surface 1 and a first bottom surface 32 connected to the first side wall surface 31. The first nonmetallic film 38 has a first surface 51 facing the first bottom surface 32 and a second surface 52 on the opposite side of the first surface 51. In the direction along the first side wall surface 31, the second surface 52 is located between the side surface 1 and the first bottom surface 32. This prevents the first nonmetallic film 38 from protruding from the first recess 30 and riding up onto the side surface 1 of the shank 16. Therefore, the side surface 1 of the shank 16 can be firmly attached to the turret 22.

[0121] According to the turning tool 10 of this disclosure, the first non-metallic film 38 is a translucent resin. When the first non-metallic film 38 is a translucent resin, the user of the turning tool 10 can see the position of each of the multiple power receiving coil portions 111 located beneath the first non-metallic film 38. Therefore, when cutting the shank 16 of the turning tool 10, the cutting position can be seen without exposing each of the power receiving coil portions 111.

[0122] According to the turning tool 10 of this disclosure, the first non-metallic film 38 is a non-transparent resin. The shank 16 is provided with a mark 4 indicating the cutting position of the shank 16. When the first non-metallic film 38 is a non-transparent resin, the user of the turning tool 10 cannot see the position of each of the multiple power receiving coil portions 111 located beneath the first non-metallic film 38. Because the shank 16 is provided with a mark 4 indicating the cutting position, even if the first non-metallic film 38 is a non-transparent resin, the cutting position can be recognized without exposing each of the power receiving coil portions 111.

[0123] According to the turning tool 10 of this disclosure, the distance between two adjacent power receiving coils 111 among the multiple power receiving coils 111 decreases as they move away from the cutting tip 17. This makes it possible to suppress the reduction in power from the turret 22 even when the shank 16 is cut to shorten the overhang amount of the shank 16.

[0124] According to the turning tool 10 of this disclosure, the multiple power receiving coils 111 are arranged alternately on both sides of a straight line parallel to the longitudinal direction. As a result, when the turning tool 10 is attached to the turret 22, power can be received from the turret 22 even if the position of the shank 16 is offset from the center of the power transmitting coil 21.

[0125] According to the turning tool 10 of this disclosure, the shank 16 has a front end face 61 to which the cutting tip 17 is attached, a rear end face 62 opposite to the front end face 61, and a side surface 1 located between the front end face 61 and the rear end face 62. Each of the plurality of power receiving coil portions 111 has a front end portion 63 facing the front end face 61 and a rear end portion 64 facing the rear end face 62. Each of the plurality of power receiving coil portions 111 is inclined with respect to the side surface 1 such that the distance between the front end portion 63 and the side surface 1 is smaller than the distance between the rear end portion 64 and the side surface 1. As a result, when the turning tool 10 is attached to the turret 22, the surface of the power receiving coil 11 is inclined in the direction of the central axis of the turret 22. Therefore, even if the power receiving coil portion 111 is positioned protruding from the turret 22, it can receive power from the turret 22.

[0126] According to the turning apparatus 100 of this disclosure, the turret 22 includes a power transmission coil 21 that sends power to the power receiving coil 11. This allows power to be supplied from the turret 22 to the turning tool 10.

[0127] According to the turning apparatus 100 of this disclosure, the power transmission coil 21 is arranged to wind around the rotation axis 29 of the turret 22. This allows power to be supplied from the power transmission coil 21 to the power receiving coil 11 regardless of the position of the turning tool 10 on the mounting surface 45 in the circumferential direction.

[0128] According to the turning apparatus 100 of this disclosure, the turret 22 has a mounting surface 45 facing the turning tool 10. The mounting surface 45 is provided with a second recess 40. The power transmission coil 21 is positioned in the second recess 40. Therefore, the shank 16 can be pressed against the mounting surface 45 of the turret 22 without the power transmission coil 21 coming into contact with the turning tool 10. As a result, the turning tool 10 can be firmly attached to the turret 22.

[0129] According to the turning apparatus 100 of this disclosure, the turret 22 is positioned in the second recess 40 and has a second non-metallic film 46 that covers the power transmission coil 21. This makes it possible to improve the waterproofness of the power transmission coil 21.

[0130] According to the turning apparatus 100 of this disclosure, the second recess 40 has a second side wall surface 41 connected to the mounting surface 45 and a second bottom surface 42 connected to the second side wall surface 41. The second nonmetallic film 46 has a third surface 53 facing the second bottom surface 42 and a fourth surface 54 on the opposite side of the third surface 53. In the direction along the second side wall surface 41, the fourth surface 54 is located between the mounting surface 45 and the second bottom surface 42. This prevents the second nonmetallic film 46 from protruding from the second recess 40 and riding up onto the mounting surface 45 of the turret 22. Therefore, the shank 16 can be firmly attached to the mounting surface 45 of the turret 22.

[0131] According to the turning apparatus 100 of this disclosure, the power transmission coil 21 is installed in a plurality of power transmission coil sections 211 arranged around the rotation axis 29 of the turret 22. This allows power to be supplied only to the power transmission coil sections 211 that require power. As a result, power consumption can be reduced.

[0132] According to the turning apparatus 100 of this disclosure, the turret 22 has a mounting surface 45 facing the turning tool 10. The mounting surface 45 is provided with a second recess 40. Each of the multiple power transmission coil sections 211 is positioned in the second recess 40.

[0133] According to the turning apparatus 100 of this disclosure, the turret 22 is positioned in the second recess 40 and has a second non-metallic film 46 that covers each of the multiple power transmission coil sections 211. This makes it possible to improve the waterproofness of each of the multiple power transmission coil sections 211.

[0134] According to the turning apparatus 100 of this disclosure, the second recess 40 has a second side wall surface 41 connected to the mounting surface 45 and a second bottom surface 42 connected to the second side wall surface 41. The second nonmetallic film 46 has a third surface 53 facing the second bottom surface 42 and a fourth surface 54 on the opposite side of the third surface 53. In the direction along the second side wall surface 41, the fourth surface 54 is located between the mounting surface 45 and the second bottom surface 42. This prevents the second nonmetallic film 46 from protruding from the second recess 40 and riding up onto the mounting surface 45 of the turret 22. Therefore, the shank 16 can be firmly attached to the mounting surface 45 of the turret 22.

[0135] The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of this application is indicated by the claims and not by the foregoing description, and is intended to include the meaning of equivalents to the claims and all modifications within the scope. [Explanation of Symbols]

[0136] 1 First side (side), 2 Second side, 3 Diode, 4 Mark, 8 First conductive coil section, 9 First insulating coating section, 10 Turning tool, 11 Power receiving coil, 12 Sensor, 13 Control unit, 14 Wireless unit, 16 Shank, 17 Cutting tip, 18 Second resonant capacitor, 19 Rectifier circuit, 20 Machine tool, 21 Power transmission coil, 22 Turret, 23 Power supply, 25 First resonant capacitor, 26 Control device, 27 Switch, 29 Rotating shaft, 30 First recess, 31 First side wall, 32 First bottom, 33 Base plate, 34 Fixing part, 35 Mounting groove, 38 First non-metallic film, 40 Second recess, 41 Second side wall, 42 Second bottom, 43 Second conductive coil section, 44 Second insulating coating section, 45 Mounting surface, 46 Second non-metallic film, 51 First surface, 52 53 Second surface, 54 Third surface, 55 Fourth surface, 55 Fifth surface, 56 Sixth surface, 61 Front end surface, 62 Rear end surface, 63 Front end, 64 Rear end, 100 Turning device, 101 First power receiving coil section, 102 Second power receiving coil section, 111 Power receiving coil section, 112 Rectifier circuit section, 113 Diode section, 114 Second non-metallic film section, 211 Power transmitting coil section, 212 Switch section, 311 First non-metallic film section, A Straight line, D1 First distance, D2 Second distance, W1 First width, W2 Second width, W3 Third width.

Claims

1. A receiving coil that receives power transmitted from a transmitting coil in a non-contact manner, The power receiving coil and the sensor are electrically connected, A wireless unit that transmits the data detected by the aforementioned sensor to an external source, It comprises a shank that holds the cutting tip, The power receiving coil is positioned on the shank, The power receiving coil has a plurality of power receiving coil sections arranged along the longitudinal direction of the shank, A turning tool in which, among the plurality of power receiving coil sections, the distance between two adjacent power receiving coil sections decreases as they move away from the cutting tip.

2. A receiving coil that receives power transmitted from a transmitting coil in a non-contact manner, The power receiving coil and the sensor are electrically connected, A wireless unit that transmits the data detected by the aforementioned sensor to an external source, It comprises a shank that holds the cutting tip, The power receiving coil is positioned on the shank, The power receiving coil has a plurality of power receiving coil sections arranged along the longitudinal direction of the shank, The shank has a front end face to which the cutting tip is attached, a rear end face opposite to the front end face, and a side surface located between the front end face and the rear end face. Each of the plurality of power receiving coil sections has a front end facing the front end surface and a rear end facing the rear end surface, A turning tool in which each of the plurality of power receiving coil sections is inclined with respect to its side surface such that the distance between the front end and the side surface is smaller than the distance between the rear end and the side surface.