Turning tool and turning device

Abstract

A turning tool and a turning device are provided that can suppress interference with turret rotation while ensuring high waterproofing. [Solution] The turning tool has a receiving coil, a sensor, and a wireless unit. The receiving coil receives power transmitted from the transmitting coil in a contactless manner. The sensor is electrically connected to the receiving coil. The wireless unit transmits data detected by the sensor to an external device. The turret includes a transmitting coil that transmits power to the receiving coil.

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 contained in the Japanese patent application are incorporated herein by reference.

Background Art

[0002] Japanese Unexamined Patent Application Publication 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]

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BEST 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 sensors 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] The turning tool may be attached to a turret and used. To supply power to a sensor attached to the turning tool, it is conceivable to supply power wired using a wiring from an external power source. However, when supplying power to the sensor using a wiring, when rotating the turret, there is a risk that the rotation of the turret may be hindered because the wiring gets entangled with the turret.

[0008] It is also conceivable to supply power to the sensor via an electrical contact from an external power source. However, the turning tool may turn a workpiece while using coolant. In this case, it is difficult to ensure high waterproofness at the electrical contact.

[0009] An object of the present disclosure is to provide a turning tool and a turning device capable of suppressing hindrance to the rotation of a turret while ensuring high waterproofness. [Effects of the Present Disclosure] According to the present disclosure, it is possible to provide a turning tool and a turning device capable of suppressing hindrance to the rotation of a turret while ensuring high waterproofness. [Description of Embodiments of the Present Disclosure] First, embodiments of the present disclosure will be listed and described.

[0010] (1) The turning tool 10 according to the present disclosure includes a power receiving coil 11, a sensor 12, and a wireless unit 14. The power receiving coil 11 receives power sent from a power transmission coil 21 in a non-contact manner. The sensor 12 is electrically connected to the power receiving coil 11. The wireless unit 14 transmits data detected by the sensor 12 to the outside. Thereby, power can be supplied to the sensor 12 in a non-contact manner. Therefore, it is possible to suppress hindrance to the rotation of the turret 22 while ensuring high waterproofness.

[0011] (2) The turning tool 10 according to (1) above further includes a cutting tip 17 and a shank 16 that holds the cutting tip 17. The power receiving coil 11 is disposed on the shank 16. Thereby, the area of the power receiving coil 11 can be increased.

[0012] (3) According to the turning tool 10 according to (2) above, a first recess 30 is provided on the side surface 1 of the shank 16. The power receiving coil 11 is disposed 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 contacting 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 further includes a first non-metallic film 38 that is disposed in the first recess 30 and covers the power receiving coil 11. Thereby, the waterproof property of the power receiving coil 11 can be enhanced.

[0014] (5) According to the turning tool 10 according to (4) above, the first recess 30 has a first side wall surface 31 continuous with the side surface 1 and a first bottom surface 32 continuous with the first side wall surface 31. The first non-metallic 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. Thereby, it is possible to prevent the first non-metallic film 38 from protruding from the first recess 30 and riding on 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 one of (2) to (5) above, the power receiving coil 11 has a first power receiving coil portion 101 and a second power receiving coil portion 102 spaced apart from the first power receiving coil portion 101. The shank 16 has a first side surface 1 and a second side surface 2 that is continuous with the first side surface 1 and inclined with respect to the first side surface 1. The first power receiving coil portion 101 is provided on the first side surface 1. The second power receiving coil portion 102 is provided on the second side surface 2. Thereby, regardless of the surface to which the turret 22 is attached, power can be efficiently received from the turret 22.

[0016] (7) According to the turning tool 10 according to (2) above, the power receiving coil 11 has a plurality of power receiving coil portions 111 arranged along the longitudinal direction of the shank 16. Thereby, even when the shank 16 is cut to shorten the protruding amount of the shank 16, power can be received from the turret 22.

[0017] (8) According to the turning tool 10 according to (7) above, a first recess 30 in which each of the plurality of power receiving coil portions 111 is arranged is provided on the side surface 1 of the shank 16. The turning tool 10 includes a first non-metallic film 38 that is disposed in the first recess 30 and covers each of the plurality of power receiving coil portions 111. Thereby, the waterproof property of each of the plurality of power receiving coil portions 111 can be enhanced.

[0018] (9) According to the turning tool 10 according to (8) above, the first recess 30 has a first side wall surface 31 continuous with the side surface 1 and a first bottom surface 32 continuous with the first side wall surface 31. The first non-metallic 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. Thereby, it is possible to suppress the first non-metallic film 38 from protruding from the first recess 30 and riding on 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) According to 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 visually recognize the position of each of the plurality of power receiving coil portions 111 located under the first non-metallic film 38. Therefore, when cutting the shank 16 of the turning tool 10, the cutting position can be visually recognized without exposing each of the power receiving coil portions 111.

[0020] (11) According to the turning tool 10 according to (8) or (9) above, the first non-metallic film 38 is a non-translucent 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-translucent resin, the user of the turning tool 10 cannot visually recognize the position of each of the plurality of power receiving coil portions 111 located under the first non-metallic film 38. Since the shank 16 is provided with the mark 4 indicating the cutting position, even if the first non-metallic film 38 is a non-translucent resin, the cutting position can be recognized without exposing each of the power receiving coil portions 111.

[0021] (12) According to the turning tool 10 according to any one of (7) to (11) above, among the plurality of power receiving coil portions 111, the interval between two adjacent power receiving coil portions 111 becomes shorter as the distance from the cutting tip 17 increases. Thereby, even when the shank 16 is cut to shorten the protruding amount of the shank 16, a decrease in power from the turret 22 can be suppressed.

[0022] (13) According to the turning tool 10 according to any one of (7) to (11) above, the plurality of power receiving coil portions 111 are alternately arranged on both sides of a straight line parallel to the longitudinal direction. Thereby, even when the position of the shank 16 is deviated from the center of the power transmission coil 21 when the turning tool 10 is attached to the turret 22, power can be received from the turret 22.

[0023] (14) According to the turning tool 10 according to the above (7), 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 face 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 face 1 such that the distance between the front end portion 63 and the side face 1 is smaller than the distance between the rear end portion 64 and the side face 1. Thereby, 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 the power receiving coil portion 111 protruding from the turret 22 can receive power from the turret 22.

[0024] (15) The turning device 100 according to the present disclosure includes the turning tool 10 according to any one of the above (1) to (14) and a turret 22 to which the turning tool 10 is attached. The turret 22 includes a power transmission coil 21 that sends power to the power receiving coil 11. Thereby, power can be supplied from the turret 22 to the turning tool 10.

[0025] (16) According to the turning device 100 according to the above (15), the power transmission coil 21 is arranged so as to wind around the rotation axis 29 of the turret 22. Thereby, power can be supplied from the power transmission coil 21 to the power receiving coil 11 regardless of the position in the circumferential direction of the mounting surface 45 where the turning tool 10 is mounted.

[0026] (17) According to the turning device 100 according to the above (15) or (16), the turret 22 has a mounting surface 45 facing the turning tool 10. A second recess 40 is provided in the mounting surface 45. The power transmission coil 21 is arranged 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 contacting the turning tool 10. As a result, the turning tool 10 can be firmly attached to the turret 22.

[0027] According to the turning device 100 according to the above (17), the turret 22 is disposed in the second recess 40 and has a second non-metallic film 46 that covers the power transmission coil 21. Thereby, the waterproof property of the power transmission coil 21 can be enhanced.

[0028] (19) According to the turning device 100 according to the above (18), the second recess 40 has a second side wall surface 41 continuous with the mounting surface 45 and a second bottom surface 42 continuous with the second side wall surface 41. The second non-metallic 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. Thereby, it is possible to suppress the second non-metallic film 46 from protruding from the second recess 40 and riding on 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 device 100 according to the above (15), the power transmission coil 21 is installed in a plurality of power transmission coil portions 211 arranged around the rotation axis 29 of the turret 22. Thereby, power can be supplied only to the power transmission coil portions 211 that require power supply. As a result, power consumption can be reduced.

[0030] (21) According to the turning device 100 according to the above (20), 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 plurality of power transmission coil portions 211 is disposed in the second recess 40.

[0031] (22) According to the turning device 100 according to the above (21), the turret 22 is disposed in the second recess 40 and has a second non-metallic film 46 that covers each of the plurality of power transmission coil portions 211. Thereby, the waterproof property of each of the plurality of power transmission coil portions 211 can be enhanced.

[0032] According to the lathe device 100 according to the above (22), the second recess 40 has a second side wall surface 41 continuous with the mounting surface 45 and a second bottom surface 42 continuous with the second side wall surface 41. The second non-metallic 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. Thereby, it is possible to suppress the second non-metallic film 46 from protruding from the second recess 40 and riding on 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 Embodiments of the Present Disclosure] Next, details of the embodiments of the present disclosure will be described with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof will not be repeated.

[0033] <Lathe Device> (First Embodiment) First, the configuration of the lathe device 100 according to the first embodiment will be described. FIG. 1 is an overall configuration diagram showing the configuration of the lathe device 100 according to the first embodiment.

[0034] As shown in FIG. 1, the lathe device 100 according to the first embodiment has a machine tool 20 and a turning tool 10. The machine tool 20 mainly has a turret 22 and a power supply 23. The turning tool 10 mainly has 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 transmission coil 21. The turning tool 10 is attached to the turret 22.

[0035] The power transmission coil 21 is connected to the power supply 23. The power transmission coil 21 sends power to the power reception coil 11. The power reception coil 11 receives power from the power transmission coil 21. The power reception coil 11 receives the power sent from the power transmission coil 21 in a non-contact manner. The power reception coil 11 is configured to receive power from the power transmission coil 21, for example, by electromagnetic induction. The power reception coil 11 faces the power transmission coil 21, for example. The power reception coil 11 is arranged coaxially with the power transmission coil 21, for example.

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

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

[0038] The control unit 13 is electrically connected to the power reception coil 11. The power converted into direct current in the rectifier circuit 19 is output to the control unit 13. The power converted into direct current 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 power receiving coil 11. The power converted to direct current in the rectifier circuit 19 is output to the wireless unit 14. The power converted to direct current 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 lathe 100 according to the modification of the first embodiment will be described. The configuration of the lathe 100 according to the modification of the first embodiment is different from the configuration of the lathe 100 according to the first embodiment mainly in that each of the machine tool 20 and the turning tool 10 has a resonance capacitor, and the other configurations are the same as those of the lathe 100 according to the first embodiment. Hereinafter, the description will focus on the configuration different from that of the lathe 100 according to the first embodiment.

[0041] FIG. 2 is an overall configuration diagram showing the configuration of the lathe 100 according to the modification of the first embodiment. As shown in FIG. 2, the machine tool 20 has a first resonance capacitor 25. The first resonance capacitor 25 is connected to each of the power supply 23 and the power transmission coil 21. One end of the first resonance capacitor 25 is connected to the power supply 23, and the other end of the first resonance capacitor 25 is connected to the power transmission coil 21. The first resonance capacitor 25 is connected in series with the power transmission coil 21. The first resonance capacitor 25 and the power transmission coil 21 constitute a first series resonance circuit.

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

[0043] In the lathe 100 according to the modification of the first embodiment, power is transmitted from the power transmission coil 21 to the power reception coil 11 by using the magnetic resonance method. Specifically, the power transmission coil 21 and the power reception coil 11 are magnetically coupled by the resonance of the magnetic field, and thus power is transmitted from the power transmission coil 21 to the power reception coil 11. The inductance of each of the power transmission coil 21 and the power reception coil 11 is appropriately determined so that the Q value indicating the resonance intensity and the coupling degree increase. Thereby, the power transmission efficiency can be improved.

[0044] (Second Embodiment) Next, the configuration of the lathe 100 according to the second embodiment will be described. The configuration of the lathe 100 according to the second embodiment is different from the configuration of the lathe 100 according to the first embodiment mainly in that the power transmission coil 21 is installed in a plurality of power transmission coil portions 211, and the other configurations are the same as those of the lathe 100 according to the first embodiment. Hereinafter, the description will focus on the configuration different from that of the lathe 100 according to the first embodiment.

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

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

[0047] As shown in FIG. 3, each of the plurality of power transmission coil units 211 is arranged in the turret 22. One switch unit 212 is connected in series to one power transmission coil unit 211. Thereby, power can be selectively supplied from the power supply 23 to the power transmission coil unit 211 in use among the plurality of power transmission coil units 211. Since power supply to the power transmission coil units 211 not in use can be prevented, unnecessary power supply can be suppressed. The machine tool 20 (see FIG. 3) having a plurality of power transmission coil units 211 may be combined with the turning tool 10 (see FIG. 1 or FIG. 2) having a single power reception coil 11, or may be combined with the turning tool 10 (see FIG. 4) having a plurality of power reception coil units 111.

[0048] (Third Embodiment) Next, the configuration of the turning device 100 according to the third embodiment will be described. The configuration of the turning device 100 according to the third embodiment is different from the configuration of the turning device 100 according to the first embodiment mainly in that the power reception coil 11 has a plurality of power reception coil units 111, and the other configurations are the same as those of the turning device 100 according to the first embodiment. Hereinafter, the description will focus on the configuration different from that of the turning device 100 according to the first embodiment.

[0049] Figure 4 is an overall configuration diagram showing the configuration of the lathe 100 according to the third embodiment. As shown in Figure 4, the cutting tool of the lathe 100 according to the third embodiment mainly includes 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 portions 111. Note that the number of the power receiving coil portions 111 is not limited to three. The number of the power receiving coil portions 111 may be four or more, six or more, eight or more, or twelve or more.

[0050] The rectifier circuit 19 has a plurality of rectifier circuit portions 112. Note that the number of the rectifier circuit portions 112 is not limited to three. The number of the rectifier circuit portions 112 may be six or more or ten or more. Each of the plurality of rectifier circuit portions 112 is connected in series with each of the plurality of power receiving coil portions 111.

[0051] The diode 3 has a plurality of diode portions 113. Note that the number of the diode portions 113 is not limited to three. The number of the diode portions 113 may be six or more or ten or more. Each of the plurality of diode portions 113 is connected in series with each of the plurality of rectifier circuit portions 112.

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

[0053] <Turning tool> (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 FIG. 5, the turning tool 10 according to the first embodiment mainly includes a cutting tip 17, a shank 16, a power receiving coil 11, a backing plate 33, and a fixing portion 34. An attachment groove 35 is provided at the tip of the shank 16. The backing plate 33 and the cutting tip 17 are arranged in the attachment groove 35. The backing plate 33 is arranged between the cutting tip 17 and the shank 16. The fixing portion 34 fixes the cutting tip 17 to the shank 16. The shank 16 holds the cutting tip 17. The power receiving coil 11 is arranged on the shank 16. The shank 16 is made of metal.

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

[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) or the like. The central axis of the first conductive coil portion 8 is perpendicular to the first bottom surface 32, for example. In other words, the first conductive coil portion 8 is wound around a straight line perpendicular to the first bottom 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. In other words, 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 is different from the configuration of the turning tool 10 according to the first embodiment mainly in that the turning tool 10 has the first non-metallic film 38, and the other configurations are the same as those of the turning tool 10 according to the first embodiment. Hereinafter, the description will focus on the configuration different from that of the turning tool 10 according to the first embodiment.

[0059] FIG. 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 FIG. 7 corresponds to the cross-section along the line VI-VI in FIG. 5.

[0060] As shown in FIG. 7, the turning tool 10 has the first non-metallic film 38. The first non-metallic film 38 is disposed on the power receiving coil 11. The first non-metallic film 38 is disposed 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 is different 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, and the other configurations are the same as those of the turning tool 10 according to the second embodiment. Hereinafter, the description will focus on the configuration different from that of the turning tool 10 according to the second embodiment.

[0062] FIG. 8 is a schematic plan view showing the configuration of the turning tool 10 according to the third embodiment. As shown in FIG. 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. An attachment groove 35 for the cutting tip 17 is provided on the front end surface 61. The rear end surface 62 is on the opposite side of the front end surface 61. The direction from the front end surface 61 toward the rear end surface 62 is the longitudinal direction of the shank 16. When viewed in a direction perpendicular to the first bottom surface 32, the direction perpendicular to the longitudinal direction of the shank 16 is the lateral direction of the shank 16.

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

[0064] FIG. 9 is a schematic cross-sectional view taken along line IX-IX of FIG. 8. As shown in FIG. 9, the first non-metallic film 38 is provided on the power receiving coil 11. The first recess 30 is exposed at the rear end surface 62. The first bottom surface 32 of the first recess 30 is continuous with 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 is different 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 portion 101 and a second power receiving coil portion 102, and the other configurations are the same as those of the turning tool 10 according to the first to third embodiments. Hereinafter, the description will focus on the configuration different from that of the turning tool 10 according to the first to third embodiments.

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

[0067] The first power receiving coil portion 101 is provided on the first side surface 1. The first power receiving coil portion 101 may be exposed on the first side surface 1 or may be disposed inside the first side surface 1. The second power receiving coil portion 102 is provided on the second side surface 2. The second power receiving coil portion 102 may be exposed on the second side surface 2 or may be disposed inside the second side surface 2. Each of the first power receiving coil portion 101 and the second power receiving coil portion 102 may be disposed in the first recess 30. A first non-metallic film 38 may be disposed on each of the first power receiving coil portion 101 and the second power receiving coil portion 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 is different from that of the turning tool 10 according to the first embodiment mainly in that it has a plurality of power receiving coil portions 111 in which the power receiving coil 11 is arranged along the longitudinal direction of the shank 16. For other configurations, they are the same as those of the turning tool 10 according to the first embodiment. Hereinafter, the description will focus on the configuration different from that of the turning tool 10 according to the first embodiment.

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

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

[0071] FIG. 13 is an enlarged cross-sectional schematic view of region XIII in FIG. 12. As shown in FIG. 13, each of the plurality of power receiving coil portions 111 has, for example, a first conductive coil portion 8 and a first insulating coating portion 9. The first conductive coil portion 8 is coated with the first insulating coating portion 9. The power receiving coil 11 may be, for example, a flexible printed circuit (FPC) or the like. The central axis of the first conductive coil portion 8 is perpendicular to, for example, the side surface 1 of the shank 16. In other words, the first conductive coil portion 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 portions 111 arranged along the longitudinal direction of the shank 16. Therefore, even when the shank 16 is cut to shorten the protruding amount of the shank 16, power from the power transmission coil 21 can be received using the remaining power receiving coil portions 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 is different 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, and the other configurations are the same as those of the turning tool 10 according to the fifth embodiment. Hereinafter, the description will focus on the configuration different from that of the turning tool 10 according to the fifth embodiment.

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

[0075] FIG. 15 is a schematic cross-sectional view taken along line XV-XV of FIG. 14. As shown in FIG. 15, the turning tool 10 has a first non-metallic film 38. The first non-metallic film 38 is disposed in the first recess 30. The first non-metallic film 38 covers each of the plurality of power receiving coil portions 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 continuous with the side surface 1. The first bottom surface 32 is continuous with the first side wall surface 31.

[0076] 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 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 or the like. When the first non-metallic film 38 is a translucent resin, the user of the turning tool 10 can visually recognize the position of each of the plurality of power receiving coil portions 111 located under the first non-metallic film 38. Therefore, when cutting the shank 16 of the turning tool 10, the cutting position can be visually recognized without exposing each of the power receiving coil portions 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 is different from the configuration of the turning tool 10 according to the sixth embodiment mainly in that the first non-metallic film 38 is an opaque resin, and the other configurations are the same as those of the turning tool 10 according to the sixth embodiment. Hereinafter, the description will focus on the configuration different from that of the turning tool 10 according to the sixth embodiment.

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

[0080] When the first non-metallic film 38 is a non-translucent resin, the user of the turning tool 10 cannot visually recognize the position of each of the plurality of power receiving coil portions 111 located under the first non-metallic film 38. Since the mark 4 indicating the cutting position is provided on the shank 16, even if the first non-metallic film 38 is a non-translucent resin, the cutting position can be recognized without exposing each of the power receiving coil portions 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 is different from the configuration of the turning tool 10 according to the sixth embodiment mainly in that there are a plurality of first recesses 30, and the other configurations are the same as those of the turning tool 10 according to the sixth embodiment. Hereinafter, the description will focus on the configuration different from that of the turning tool 10 according to the sixth embodiment.

[0082] FIG. 17 is a schematic plan view showing the configuration of the turning tool 10 according to the eighth embodiment. FIG. 18 is a schematic cross-sectional view taken along line XVIII-XVIII of FIG. 17. As shown in FIGS. 17 and 18, a plurality of first recesses 30 may be provided on the side surface 1 of the shank 16. The first non-metallic film 38 has a plurality of first non-metallic film portions 311. Each of the plurality of first non-metallic film portions 311 is disposed in each of the plurality of first recesses 30. Each of the plurality of power receiving coil portions 111 is disposed in each of the plurality of first recesses 30. In one first recess 30, one power receiving coil portion 111 and one first non-metallic portion are disposed. In the longitudinal direction of the shank 16, the width of the first non-metallic film portion 311 may be larger 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 is mainly different from the configuration of the turning tool 10 according to the fifth embodiment in that the distance between two adjacent power receiving coil portions 111 among the plurality of power receiving coil portions 111 becomes shorter as the distance from the cutting tip 17 increases, and the other configurations are the same as those of the turning tool 10 according to the fifth embodiment. Hereinafter, the description will focus on the configuration different from that of the turning tool 10 according to the fifth embodiment.

[0084] FIG. 19 is a schematic plan view showing the configuration of the turning tool 10 according to the ninth embodiment. FIG. 20 is a schematic cross-sectional view taken along line XX-XX of FIG. 19. As shown in FIGS. 19 and 20, among the plurality of power receiving coil portions 111, the distance between two adjacent power receiving coil portions 111 becomes shorter as the distance from the cutting tip 17 increases. From another perspective, among the plurality of power receiving coil portions 111, the distance between two adjacent power receiving coil portions 111 becomes shorter as it goes from the front end face 61 to the rear end face 62. The power receiving coil portions 111 are roughly 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 is mainly different from the configuration of the turning tool 10 according to the 5th embodiment in that a plurality of power receiving coil portions 111 are alternately arranged on both sides of a straight line parallel to the longitudinal direction, and the other configurations are the same as those of the turning tool 10 according to the 5th embodiment. Hereinafter, the description will focus on the configuration different from that of the turning tool 10 according to the 5th embodiment.

[0086] FIG. 21 is a schematic plan view showing the configuration of the turning tool 10 according to the 10th embodiment. As shown in FIG. 21, a plurality of power receiving coil portions 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 plurality of power receiving coil portions 111 are alternately arranged on both sides of the straight line A. From another perspective, the plurality of power receiving coil portions 111 are arranged in a staggered pattern. When viewed in a direction perpendicular to the side surface 1, half of the plurality of power receiving coil portions 111 may be arranged on one side of the straight line, and the remaining half of the plurality of power receiving coil portions 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 is mainly different from the configuration of the turning tool 10 according to the 5th embodiment in that each of the plurality of power receiving coil portions 111 is inclined with respect to the side surface 1 of the shank 16, and the other configurations are the same as those of the turning tool 10 according to the 5th embodiment. Hereinafter, the description will focus on the configuration different from that of the turning tool 10 according to the 5th embodiment.

[0088] FIG. 22 is a schematic plan view showing the configuration of the turning tool 10 according to the 11th embodiment. FIG. 23 is a schematic cross-sectional view taken along line XXIII-XXIII of FIG. 22. As shown in FIGS. 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 face to which the cutting tip 17 is attached. The rear end face 62 is on the side opposite to 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 FIG. 23, each of the plurality of power receiving coil portions 111 has a front end portion 63 and a rear end portion 64. The front end portion 63 faces the front end surface 61. The rear end portion 64 faces the rear end surface 62. As shown in FIG. 23, each of the plurality of power receiving coil portions 111 is inclined with respect to the side surface 1 such that the distance (first distance D1) between the front end portion 63 and the side surface 1 is smaller than the distance (second distance D2) between the rear end portion 64 and the side surface 1. When the turning tool 10 is attached to the attachment surface 45 of the turret 22, each of the plurality of power receiving coils 11 is inclined toward the rotation axis 29 of the turret 22. Therefore, each of the plurality of power receiving coils 11 can efficiently receive power from the power transmission coil 21.

[0090] <Turret> (First Embodiment) Next, the configuration of the turret 22 according to the first embodiment will be described. FIG. 24 is a schematic plan view showing the configuration of the turret 22 according to the first embodiment. As shown in FIG. 24, the turret 22 has an attachment surface 45, a rotation axis 29, and a power transmission coil 21. The turning tool 10 is attached to the attachment surface 45. The attachment surface 45 faces the turning tool 10. The turret 22 is configured to be rotatable around the rotation axis 29. By rotating the turret 22, the turning tool 10 rotates around the rotation axis 29. A plurality of turning tools 10 may be attached to the turret 22. By rotating the turret 22, a desired turning tool 10 among the plurality of turning tools 10 can be arranged at a desired position.

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

[0092] As shown in FIG. 24, when viewed in a direction perpendicular to the mounting surface 45 of the turret 22, the power transmission coil 21 is arranged to overlap the power reception coil 11. In other words, the power transmission coil 21 faces the power reception coil 11. The central axis of the power transmission coil 21 may be parallel to the central axis of the power reception coil 11.

[0093] FIG. 25 is a schematic cross-sectional view taken along line XXV-XXV of FIG. 24. As shown in FIG. 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 continuous with the mounting surface 45. The second bottom surface 42 is continuous with the second side wall surface 41. The power transmission coil 21 is arranged in the second recess 40. The power transmission coil 21 may be in contact with each of the second side wall surface 41 and the second bottom surface 42.

[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) or the like. The second insulating coating portion 44 may be in contact with each of the second side wall surface 41 and the second bottom surface 42.

[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 is different from the configuration of the turret 22 according to the first embodiment mainly in that the power transmission coil 21 is installed in a plurality of power transmission coil units 211, and the other configurations are the same as those of the turret 22 according to the first embodiment. Hereinafter, the description will focus on the configuration different from that of the turret 22 according to the first embodiment.

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

[0097] As shown in FIG. 26, the central axis of each of the plurality of power transmission coil units 211 is, for example, parallel to the rotation axis 29 of the turret 22. The central axis of each of the plurality of power transmission coil units 211 extends perpendicular to the mounting surface 45 of the turret 22, for example. The number of turns of each of the plurality of power transmission coil units 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 plurality of power transmission coil units 211 is provided on the mounting surface 45 of the turret 22, for example. The number of the power transmission coil units 211 is not particularly limited, but is, for example, 12.

[0098] As shown in FIG. 26, when viewed in the direction perpendicular to the mounting surface 45 of the turret 22, the power transmission coil unit 211 is arranged so as to overlap the power reception coil unit 111. In other words, the power transmission coil unit 211 faces the power reception coil unit 111. The central axis of the power transmission coil unit 211 may be parallel to the central axis of the power reception coil unit 111.

[0099] As shown in FIGS. 26 and 27, a plurality of second recesses 40 may be provided on the mounting surface 45 of the turret 22. Each of the plurality of power transmission coil units 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 coil units 211 may be arranged 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 is different 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, and the other configurations are the same as those of the turret 22 according to the first embodiment. Hereinafter, the description will focus on the configuration different from that of the turret 22 according to the first embodiment.

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

[0102] The second non-metallic 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 is different from the configuration of the turret 22 according to the third embodiment mainly in that the second recesses 40 are formed radially, and the other configurations are the same as those of the turret 22 according to the third embodiment. Hereinafter, the description will focus on the configuration different from that of the turret 22 according to the third embodiment.

[0104] FIG. 30 is a schematic plan view showing the configuration of the turret 22 according to the fourth embodiment. As shown in FIGS. 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 in the radial 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 non-metal films 46 is disposed in each of the plurality of second recesses 40. Each of the plurality of second non-metal films 46 covers the power transmission coil 21. The plurality of second non-metal films 46 are formed radially when viewed from the rotation axis 29 of the turret 22. The plurality of second non-metal films 46 are formed radially when viewed from the rotation axis 29 of the turret 22. The plurality of second non-metal films 46 extend in the radial 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 non-metal 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 is different 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, and the other configurations are the same as those of the turret 22 according to the second embodiment. Hereinafter, the description will focus on the configuration different from that of the turret 22 according to the second embodiment.

[0107] FIG. 31 is a schematic plan view showing the configuration of the turret 22 according to the fifth embodiment. FIG. 32 is a schematic cross-sectional view taken along line XXXII-XXXII of FIG. 31. As shown in FIGS. 31 and 32, each of the plurality of power transmission coil portions 211 is arranged around the rotation axis 29 of the turret 22. The turret 22 has an attachment surface 45 facing the turning tool 10. A plurality of second recesses 40 are provided in the attachment surface 45. Each of the plurality of power transmission coil portions 211 is arranged in each of the plurality of second recesses 40. The second non-metal film 46 has a plurality of second non-metal film portions 114. Each of the plurality of second non-metal film portions 114 is arranged in each of the plurality of second recesses 40. Each of the plurality of second non-metal film portions 114 covers each of the plurality of power transmission coil portions 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 continuous with the attachment surface 45. The second bottom surface 42 is continuous with the second side wall surface 41. Each of the plurality of second non-metal film portions 114 has a third surface 53 and a fourth surface 54. The third surface 53 faces 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 attachment surface 45 and the second bottom surface 42.

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

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

[0111] <Function and effect> Next, the function and effect of the turning tool 10 and the turning device 100 according to the present disclosure will be described.

[0112] According to the turning tool 10 according to the present disclosure, the power receiving coil 11 receives the power sent 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. Thereby, the sensor 12 can be powered in a non-contact manner. Therefore, while ensuring high waterproofness, it is possible to suppress interfering with the rotation of the turret 22.

[0113] According to the turning tool 10 according to the present disclosure, it further has a cutting tip 17 and a shank 16 that holds the cutting tip 17. The power receiving coil 11 is disposed on the shank 16. Thereby, the area of the power receiving coil 11 can be increased.

[0114] According to the turning tool 10 according to the present disclosure, a first recess 30 is provided on the side surface 1 of the shank 16. The power receiving coil 11 is disposed 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 contacting the turret 22. As a result, the turning tool 10 can be firmly attached to the turret 22.

[0115] According to the turning tool 10 according to the present disclosure, it further has a first non-metallic film 38 that is disposed in the first recess 30 and covers the power receiving coil 11. Thereby, the waterproofness of the power receiving coil 11 can be enhanced.

[0116] According to the turning tool 10 according to the present disclosure, the first recess 30 has a first side wall surface 31 continuous with the side surface 1 and a first bottom surface 32 continuous with the first side wall surface 31. The first non-metallic 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. Thereby, it is possible to suppress the first non-metallic film 38 from protruding from the first recess 30 and riding on 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 according to the present disclosure, the power receiving coil 11 has a first power receiving coil portion 101 and a second power receiving coil portion 102 spaced apart from the first power receiving coil portion 101. The shank 16 has a first side surface 1 and a second side surface 2 continuous with the first side surface 1 and inclined with respect to the first side surface 1. The first power receiving coil portion 101 is provided on the first side surface 1. The second power receiving coil portion 102 is provided on the second side surface 2. Thereby, power can be efficiently received from the turret 22 regardless of the surface to which the turret 22 is attached.

[0118] According to the turning tool 10 according to the present disclosure, the power receiving coil 11 has a plurality of power receiving coil portions 111 arranged along the longitudinal direction of the shank 16. Thereby, even when the shank 16 is cut to shorten the protruding amount of the shank 16, power can be received from the turret 22.

[0119] According to the turning tool 10 according to the present disclosure, the side surface 1 of the shank 16 is provided with a first recess 30 in which each of the plurality of power receiving coil portions 111 is arranged. The turning tool 10 includes a first non-metallic film 38 disposed in the first recess 30 and covering each of the plurality of power receiving coil portions 111. Thereby, the waterproof property of each of the plurality of power receiving coil portions 111 can be enhanced.

[0120] According to the turning tool 10 according to the present disclosure, the first recess 30 has a first side wall surface 31 continuous with the side surface 1 and a first bottom surface 32 continuous with the first side wall surface 31. The first non-metallic 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. Thereby, it is possible to suppress the first non-metallic film 38 from protruding from the first recess 30 and riding on 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 according to the present 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 visually recognize the position of each of the plurality of power receiving coil portions 111 located under the first non-metallic film 38. Therefore, when cutting the shank 16 of the turning tool 10, the cutting position can be visually recognized without exposing each of the power receiving coil portions 111.

[0122] According to the turning tool 10 according to the present disclosure, the first non-metallic film 38 is an opaque 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 an opaque resin, the user of the turning tool 10 cannot visually recognize the position of each of the plurality of power receiving coil portions 111 located under the first non-metallic film 38. Since the shank 16 is provided with the mark 4 indicating the cutting position, even if the first non-metallic film 38 is an opaque resin, the cutting position can be recognized without exposing each of the power receiving coil portions 111.

[0123] According to the turning tool 10 according to the present disclosure, among the plurality of power receiving coil portions 111, the interval between two adjacent power receiving coil portions 111 becomes shorter as the distance from the cutting tip 17 increases. Thereby, even when cutting the shank 16 to shorten the protruding amount of the shank 16, a decrease in power from the turret 22 can be suppressed.

[0124] According to the turning tool 10 according to the present disclosure, the plurality of power receiving coil portions 111 are alternately arranged on both sides of a straight line parallel to the longitudinal direction. Thereby, when the turning tool 10 is attached to the turret 22, even if the position of the shank 16 is deviated from the center of the power transmission coil 21, power can be received from the turret 22.

[0125] According to the turning tool 10 according to the present 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 face 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 face 1 such that the distance between the front end portion 63 and the side face 1 is smaller than the distance between the rear end portion 64 and the side face 1. Thereby, 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 the power receiving coil portion 111 protruding from the turret 22 can receive power from the turret 22.

[0126] According to the turning device 100 according to the present disclosure, the turret 22 includes a power transmission coil 21 that sends power to the power receiving coil 11. Thereby, power can be supplied from the turret 22 to the turning tool 10.

[0127] According to the turning device 100 according to the present disclosure, the power transmission coil 21 is arranged so as to wind around the rotation axis 29 of the turret 22. Thereby, power can be supplied from the power transmission coil 21 to the power receiving coil 11 regardless of the position in the circumferential direction of the mounting surface 45 where the turning tool 10 is attached.

[0128] According to the turning device 100 according to the present disclosure, the turret 22 has an attachment surface 45 facing the turning tool 10. A second recess 40 is provided in the attachment surface 45. The power transmission coil 21 is disposed in the second recess 40. Therefore, the shank 16 can be pressed against the attachment surface 45 of the turret 22 without the power transmission coil 21 contacting the turning tool 10. As a result, the turning tool 10 can be firmly attached to the turret 22.

[0129] According to the turning device 100 according to the present disclosure, the turret 22 has a second non-metallic film 46 that is disposed in the second recess 40 and covers the power transmission coil 21. Thereby, the waterproof property of the power transmission coil 21 can be enhanced.

[0130] According to the turning device 100 according to the present disclosure, the second recess 40 has a second side wall surface 41 continuous with the attachment surface 45 and a second bottom surface 42 continuous with the second side wall surface 41. The second non-metallic 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 attachment surface 45 and the second bottom surface 42. Thereby, it is possible to suppress the second non-metallic film 46 from protruding from the second recess 40 and riding on the attachment surface 45 of the turret 22. Therefore, the shank 16 can be firmly attached to the attachment surface 45 of the turret 22.

[0131] According to the turning device 100 according to the present disclosure, the power transmission coil 21 is installed in a plurality of power transmission coil portions 211 arranged around the rotation axis 29 of the turret 22. Thereby, power can be supplied only to the power transmission coil portions 211 that require power supply. As a result, power consumption can be reduced.

[0132] According to the turning device 100 according to the present disclosure, the turret 22 has an attachment surface 45 facing the turning tool 10. A second recess 40 is provided in the attachment surface 45. Each of the plurality of power transmission coil portions 211 is disposed in the second recess 40.

[0133] According to the lathe 100 according to the present disclosure, the turret 22 is disposed in the second recess 40 and has a second non-metallic film 46 that covers each of the plurality of power transmission coil portions 211. Thereby, the waterproof property of each of the plurality of power transmission coil portions 211 can be enhanced.

[0134] According to the lathe 100 according to the present disclosure, the second recess 40 has a second side wall surface 41 continuous with the mounting surface 45 and a second bottom surface 42 continuous with the second side wall surface 41. The second non-metallic 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. Thereby, it is possible to suppress the second non-metallic film 46 from protruding from the second recess 40 and riding on 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 this time should be considered as illustrative in all respects and not restrictive. The scope of the present application is shown not by the above description but by the claims, and it is intended that all modifications within the meaning and scope equivalent to the claims be included.

Explanation of reference numerals

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

Claims

1. A power receiving coil that receives power transmitted from a power transmission coil in a non-contact manner, a sensor electrically connected to the power receiving coil, a wireless unit that transmits data detected by the sensor to the outside, a cutting tip, and a shank that holds the cutting tip, wherein the power receiving coil is disposed on the shank, a first recess having a first side wall surface continuous with the side surface and a first bottom surface continuous with the first side wall surface is provided on the side surface of the shank, the power receiving coil is disposed in the first recess, further comprising a first non-metallic film disposed in the first recess and covering the power receiving coil, the first non-metallic film is a translucent resin and has a first surface facing the first bottom surface and a second surface on the opposite side of the first surface, the first non-metallic film is disposed in the first recess so as not to protrude from the first recess, in a direction along the first side wall surface, the second surface is located between the side surface and the first bottom surface, a turning tool.

2. the power receiving coil has a first power receiving coil portion and a second power receiving coil portion spaced apart from the first power receiving coil portion, the shank has a first side surface and a second side surface continuous with the first side surface and inclined with respect to the first side surface, the first power receiving coil portion is provided on the first side surface, the second power receiving coil portion is provided on the second side surface, the turning tool according to claim 1.

3. A power receiving coil that receives power transmitted from a power transmission coil in a non-contact manner, a sensor electrically connected to the power receiving coil, a wireless unit that transmits data detected by the sensor to the outside, a cutting tip, and a shank that holds the cutting tip, wherein the power receiving coil has a first power receiving coil portion and a second power receiving coil portion spaced apart from the first power receiving coil portion and is disposed on the shank, the shank has a first side surface and a second side surface continuous with the first side surface and inclined with respect to the first side surface, a first recess is provided on the side surface of the shank, the power receiving coil is disposed in the first recess, further comprising a first non-metallic film disposed in the first recess and covering the power receiving coil, the first power receiving coil portion is provided on the first side surface in a state of being wound around a straight line perpendicular to the first side surface, the second power receiving coil portion is provided on the second side surface in a state of being wound around a straight line perpendicular to the second side surface, The first non-metallic film is a translucent resin, The first non-metallic film is a turning tool disposed in the first recess so as not to protrude from the first recess.

Images