Turning tools and turning devices

Abstract

The turning tool includes a power receiving coil, a sensor, and a wireless unit. The power receiving coil receives power from the power transmitting coil in a contactless manner. The sensor is electrically connected to the power receiving coil. The wireless unit transmits data detected by the sensor to the outside world.

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. The entire contents of 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.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2013-184275 Summary of the Invention

[0006] The turning tool disclosed herein includes a power receiving coil, a sensor, and a wireless unit. The power receiving coil receives power from the power transmitting coil in a contactless 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

[0007] Figure 1 It is an overall structural diagram showing the structure of the turning device according to the first embodiment.

[0008] Figure 2 It is an overall configuration diagram showing the configuration of a turning device according to a modification of the first embodiment.

[0009] Figure 3 It is an overall structural diagram showing the structure of a turning device according to a second embodiment.

[0010] Figure 4 It is an overall structural diagram showing the structure of a turning device according to a third embodiment.

[0011] Figure 5 It is a schematic plan view showing the structure of the turning tool according to the first embodiment.

[0012] Figure 6 It is along Figure 5 Schematic diagram of the cross section along line VI-VI.

[0013] Figure 7 It is a schematic cross-sectional view showing the structure of a turning tool according to a second embodiment.

[0014] Figure 8It is a schematic plan view showing the structure of a turning tool according to a third embodiment.

[0015] Figure 9 It is along Figure 8 Schematic diagram of the cross section of line IX-IX.

[0016] Figure 10 It is a schematic perspective view showing the structure of a turning tool according to a fourth embodiment.

[0017] Figure 11 It is a schematic plan view showing the structure of a turning tool according to a fifth embodiment.

[0018] Figure 12 It is along Figure 11 Schematic diagram of the cross section along line XII-XII.

[0019] Figure 13 yes Figure 12 Schematic diagram of an enlarged cross section of region XIII.

[0020] Figure 14 It is a schematic plan view showing the structure of a turning tool according to a sixth embodiment.

[0021] Figure 15 It is along Figure 14 Schematic diagram of the cross section along line XV-XV.

[0022] Figure 16 It is a schematic plan view showing the structure of a turning tool according to a seventh embodiment.

[0023] Figure 17 It is a schematic plan view showing the structure of a turning tool according to an eighth embodiment.

[0024] Figure 18 It is along Figure 17 Schematic diagram of the cross section along line XVIII-XVIII.

[0025] Figure 19 It is a schematic plan view showing the structure of a turning tool according to a ninth embodiment.

[0026] Figure 20 It is along Figure 19 Schematic diagram of the cross section of line XX-XX.

[0027] Figure 21 It is a schematic plan view showing the structure of a turning tool according to a tenth embodiment.

[0028] Figure 22 It is a schematic plan view showing the structure of a turning tool according to an eleventh embodiment.

[0029] Figure 23 It is along Figure 22 Schematic diagram of the cross section of line XXIII-XXIII.

[0030] Figure 24 It is a schematic plan view showing the structure of the turret according to the first embodiment.

[0031] Figure 25 It is along Figure 24 Schematic diagram of the cross section of line XXV-XXV.

[0032] Figure 26 It is a schematic plan view showing the structure of a turret according to a second embodiment.

[0033] Figure 27 It is along Figure 26 Schematic diagram of the cross section of line XXVII-XXVII.

[0034] Figure 28 It is a schematic plan view showing the structure of a turret according to a third embodiment.

[0035] Figure 29 It is along Figure 28 as well as Figure 30 Schematic diagram of the cross section of line XXIX-XXIX.

[0036] Figure 30 It is a schematic plan view showing the structure of a turret according to a fourth embodiment.

[0037] Figure 31 It is a schematic plan view showing the structure of a turret according to a fifth embodiment.

[0038] Figure 32 It is along Figure 31 Schematic diagram of the cross section of line XXXII-XXXII. DETAILED DESCRIPTION

[0039] [Problems to be Solved by the Present Disclosure]

[0040] Development is underway to analyze data from sensors attached to turning tools to diagnose their condition. The data detected by the sensors is transmitted wirelessly to an external diagnostic system, for example. The diagnostic system can predict the life of the turning tool, for example.

[0041] Turning tools are sometimes mounted on a turret for use. To power sensors mounted on turning tools, one approach is to use wiring from an external power source. However, when using wiring to power sensors, there's a risk that the wiring may become entangled with the turret when the turret is rotated, potentially hindering its rotation.

[0042] Alternatively, it is possible to power the sensor from an external power source via the electrical contacts. However, turning tools sometimes use coolant while turning the workpiece. In this case, it is difficult to ensure high waterproofness at the electrical contacts.

[0043] An object of the present disclosure is to provide a turning tool and a turning device that can suppress interference with the rotation of a turret while ensuring high waterproofness.

[0044] [Effects of the Present Disclosure]

[0045] According to the present disclosure, it is possible to provide a turning tool and a turning device that can suppress interference with the rotation of the turret while ensuring high waterproofness.

[0046] [Description of Embodiments of the Present Disclosure]

[0047] First, embodiments of the present disclosure will be described below.

[0048] (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 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 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 prevent interference with the rotation of the turret 22 while ensuring high waterproofness.

[0049] (2) The turning tool 10 according to (1) above further includes a cutting insert 17 and a shank 16 for holding the cutting insert 17. The power receiving coil 11 is disposed on the shank 16. This allows the area of the power receiving coil 11 to be increased.

[0050] (3) According to the turning tool 10 according to (2) above, the 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 securely attached to the turret 22.

[0051] (4) The turning tool 10 according to (3) above further includes a first non-metallic film 38 disposed in the first recess 30 and covering the power receiving coil 11. This improves the waterproofness of the power receiving coil 11.

[0052] (5) According to the turning tool 10 involved 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 non-metallic film 38 has a first surface 51 opposite to the first bottom surface 32 and a second surface 52 opposite to 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. As a result, the first non-metallic film 38 can be prevented from extending from the first recess 30 and climbing up 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.

[0053] (6) According to the turning tool 10 according to any one of (2) to (5), the power receiving coil 11 includes a first power receiving coil portion 101 and a second power receiving coil portion 102 separated from the first power receiving coil portion 101. The shank 16 includes a first side surface 1 and a second side surface 2 connected to the first side surface 1 and inclined relative 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. Thus, power can be efficiently received from the turret 22 regardless of the surface on which the turret 22 is mounted.

[0054] (7) According to the turning tool 10 according to (2) above, the power receiving coil 11 includes a plurality of power receiving coil portions 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 its protrusion.

[0055] (8) According to the turning tool 10 according to (7) above, a first recess 30 is provided on the side surface 1 of the shank 16, in which the plurality of power receiving coil units 111 are disposed. The turning tool 10 includes a first non-metallic film 38 disposed in the first recess 30 and covering the plurality of power receiving coil units 111. This improves the waterproofness of each of the plurality of power receiving coil units 111.

[0056] (9) According to the turning tool 10 involved 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 non-metallic film 38 has a first surface 51 opposite to the first bottom surface 32 and a second surface 52 opposite to 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. As a result, the first non-metallic film 38 can be prevented from extending from the first recess 30 and climbing up 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.

[0057] (10) According to the turning tool 10 according to (8) or (9), 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 confirm the position of each of the plurality of power receiving coil units 111 located below the first non-metallic film 38. Therefore, when the shank 16 of the turning tool 10 is cut, the cut position can be visually confirmed without exposing each of the power receiving coil units 111.

[0058] (11) According to the turning tool 10 involved in (8) or (9) above, the first non-metallic film 38 is a non-light-transmitting resin. A mark 4 indicating the cutting position of the shank 16 is provided on the shank 16. In the case where the first non-metallic film 38 is a non-light-transmitting resin, the user of the turning tool 10 cannot visually confirm the positions of the multiple power receiving coil parts 111 located below the first non-metallic film 38. By providing the mark 4 indicating the cutting position on the shank 16, even if the first non-metallic film 38 is a non-light-transmitting resin, the cutting position can be identified without exposing each power receiving coil part 111.

[0059] (12) According to the turning tool 10 according to any one of (7) to (11) above, 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 blade 17 increases. Thus, even when the shank 16 is cut to shorten the protrusion amount of the shank 16, a reduction in the power supplied to the turret 22 can be suppressed.

[0060] (13) According to the turning tool 10 according to any one of (7) to (11), the plurality of power receiving coils 111 are alternately arranged on both sides of a straight line parallel to the longitudinal direction. Thus, when the turning tool 10 is mounted on the turret 22, even if the position of the shank 16 is offset from the center of the power transmitting coil 21, power can still be received from the turret 22.

[0061] (14) According to the turning tool 10 involved in (7) above, the shank 16 has a front end face 61 on which the cutting blade 17 is mounted, 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. The plurality of power receiving coil portions 111 each have a front end portion 63 opposite to the front end face 61 and a rear end portion 64 opposite to the rear end face 62. The plurality of power receiving coil portions 111 are each inclined relative to the side face 1 in such a manner 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. Thus, when the turning tool 10 is mounted on the turret 22, the surface of the power receiving coil 11 is inclined toward the central axis of the turret 22. Therefore, even the power receiving coil portion 111 arranged to protrude from the turret 22 can receive power from the turret 22.

[0062] (15) The turning device 100 according to the present disclosure includes the turning tool 10 according to any one 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 for transmitting power to the power reception coil 11. Thus, power can be supplied from the turret 22 to the turning tool 10.

[0063] (16) According to the turning device 100 according to (15) above, the power transmission coil 21 is arranged to be wound around the rotating shaft 29 of the turret 22. Thus, regardless of where the turning tool 10 is mounted in the circumferential direction of the mounting surface 45, power can be supplied from the power transmission coil 21 to the power receiving coil 11.

[0064] (17) According to the turning device 100 involved in (15) or (16) above, the turret 22 has a mounting surface 45 facing the turning tool 10. The second recess 40 is provided on 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 securely mounted on the turret 22.

[0065] (18) According to the turning device 100 according to (17) above, the turret 22 has the second non-metallic film 46, which is arranged in the second recess 40 and covers the power transmission coil 21. This improves the waterproofness of the power transmission coil 21.

[0066] (19) According to the turning device 100 involved 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 non-metallic film 46 has a third surface 53 opposite to the second bottom surface 42 and a fourth surface 54 opposite to 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. As a result, the second non-metallic film 46 can be prevented from extending from the second recess 40 and climbing onto the mounting surface 45 of the turret 22. Therefore, the shank 16 can be firmly mounted on the mounting surface 45 of the turret 22.

[0067] (20) According to the turning device 100 described in (15), the power transmission coil 21 is provided as a plurality of power transmission coil sections 211 arranged around the rotating shaft 29 of the turret 22. This allows power to be supplied only to the power transmission coil sections 211 that require it. Consequently, power consumption can be reduced.

[0068] (21) According to the turning device 100 according to (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. The plurality of power transmission coil units 211 are respectively arranged in the second recess 40.

[0069] (22) According to the turning device 100 according to (21) above, the turret 22 includes the second non-metallic film 46, which is disposed in the second recess 40 and covers each of the plurality of power transmission coil units 211. This improves the waterproofness of each of the plurality of power transmission coil units 211.

[0070] (23) According to the turning device 100 involved 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 non-metallic film 46 has a third surface 53 opposite to the second bottom surface 42 and a fourth surface 54 opposite to 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. As a result, the second non-metallic film 46 can be prevented from extending from the second recess 40 and climbing onto the mounting surface 45 of the turret 22. Therefore, the shank 16 can be firmly mounted on the mounting surface 45 of the turret 22.

[0071] [Details of the embodiments of the present disclosure]

[0072] Next, the details of the embodiments of the present disclosure will be described based on the drawings. Note that, in the following drawings, the same or corresponding parts are denoted by the same reference numerals, and their description will not be repeated.

[0073] <Turning device>

[0074] (First embodiment)

[0075] First, the structure of the turning device 100 according to the first embodiment will be described. Figure 1 It is an overall structural diagram showing the structure of the turning device 100 according to the first embodiment.

[0076] like Figure 1 As shown, a turning device 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 insert 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.

[0077] The power transmission coil 21 is connected to a power source 23. The power transmission coil 21 transmits electric power to the power receiving coil 11. The power receiving coil 11 receives electric power from the power transmission coil 21. The power receiving coil 11 receives the electric power transmitted from the power transmission coil 21 in a contactless manner. The power receiving coil 11 is configured to receive electric power from the power transmission coil 21 through electromagnetic induction, for example. The power receiving coil 11 is, for example, positioned opposite the power transmission coil 21. The power receiving coil 11 is, for example, coaxially arranged with respect to the power transmission coil 21.

[0078] The power receiving coil 11 outputs the power received from the power transmitting coil 21 to the rectifier circuit 19. The rectifier circuit 19 converts the AC power received from the power transmitting coil 21 into DC power. The power converted to DC by the rectifier circuit 19 is output to the sensor 12. The sensor 12 is electrically connected to the power receiving coil 11. The power converted to DC by the rectifier circuit 19 drives the sensor 12. The sensor 12 detects the cutting state, for example.

[0079] The sensor 12 is, for example, an acceleration sensor, a strain sensor, or an acoustic sensor. The acceleration sensor can measure, for example, the period and amplitude of vibration of the turning tool 10. The strain sensor can measure, for example, the degree of bending of the shank 16. The acoustic sensor can measure, for example, the frequency and amplitude of noise generated during cutting.

[0080] The control unit 13 is electrically connected to the power receiving coil 11. The power converted to DC by the rectifier circuit 19 is output to the control unit 13. The power converted to DC by 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.

[0081] Wireless unit 14 is electrically connected to power receiving coil 11. Power converted to DC by rectifier circuit 19 is output to wireless unit 14. Power converted to DC by rectifier circuit 19 drives wireless unit 14. Wireless unit 14 transmits data detected by sensor 12 to the outside. Control unit 13 controls wireless unit 14, causing wireless unit 14 to output data detected by sensor 12 to the outside.

[0082] (Modification of the first embodiment)

[0083] Next, the structure of a turning device 100 according to a modified example of the first embodiment will be described. The structure of the turning device 100 according to the modified example of the first embodiment differs from the structure of the turning device 100 according to the first embodiment primarily in that the machine tool 20 and the turning tool 10 each include a resonant capacitor. The remaining structure is the same as that of the turning device 100 according to the first embodiment. The following description will focus on the structure that differs from the turning device 100 according to the first embodiment.

[0084] Figure 2 1 is an overall structural diagram showing the structure of a turning device 100 according to a modified example of the first embodiment. Figure 2 As shown, the machine tool 20 includes 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 is connected in series with the power transmission coil 21. The first resonant capacitor 25 and the power transmission coil 21 form a first series resonant circuit.

[0085] like Figure 2 As shown, the turning tool 10 includes a second resonant capacitor 18. The second resonant capacitor 18 is connected to a 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 form a second series resonant circuit.

[0086] In the turning device 100 according to the modified example of the first embodiment, electric power is transmitted from the power transmission coil 21 to the power reception coil 11 using magnetic resonance. Specifically, the power transmission coil 21 and the power reception coil 11 are magnetically coupled through magnetic field resonance, thereby transmitting electric power from the power transmission coil 21 to the power reception coil 11. The inductance and other parameters of the power transmission coil 21 and the power reception coil 11 are appropriately determined to maximize the Q value, which indicates the strength of the resonance, and the degree of coupling. This improves power transmission efficiency.

[0087] (Second embodiment)

[0088] Next, the structure of the turning device 100 according to the second embodiment will be described. The structure of the turning device 100 according to the second embodiment differs from that of the turning device 100 according to the first embodiment primarily in that the power transmission coil 21 is provided as a plurality of power transmission coil portions 211. The remaining structure is the same as that of the turning device 100 according to the first embodiment. The following description will focus on the structure that differs from that of the turning device 100 according to the first embodiment.

[0089] Figure 3 1 is an overall structural diagram showing the structure of the turning device 100 according to the second embodiment. Figure 3 As shown, the turning device 100 according to the second embodiment includes a machine tool 20 having a power transmission coil 21, a switch 27, a control device 26, and a power supply 23. The power transmission coil 21 is provided as a plurality of power transmission coil sections 211. It should be noted that the number of power transmission coil sections 211 is not limited to three. The number of power transmission coil sections 211 can be four or more, six or more, eight or more, or twelve or more.

[0090] The switch 27 includes a plurality of switch sections 212. It should be noted that the number of switch sections 212 is not limited to three. The number of switch sections 212 can 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 sections 212. The control device 26 controls the opening and closing of each of the plurality of switch sections 212. The plurality of switch sections 212 can be disposed inside or outside the turret 22.

[0091] like Figure 3 As shown, a plurality of power transmission coil units 211 are respectively arranged on the turret 22. A switch unit 212 is connected in series with respect to one power transmission coil unit 211. Thus, 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. Power can be not supplied to the unused power transmission coil unit 211, thereby suppressing the supply of unnecessary power. The machine tool 20 (refer to Figure 3 ) can be used with a turning tool 10 having a single power receiving coil 11 (refer to Figure 1 or Figure 2 ) can also be combined with a turning tool 10 having a plurality of power receiving coil portions 111 (see Figure 4 )combination.

[0092] (Third embodiment)

[0093] Next, the structure of the turning device 100 according to the third embodiment will be described. The structure of the turning device 100 according to the third embodiment differs from that of the turning device 100 according to the first embodiment primarily in that the power receiving coil 11 includes multiple power receiving coil units 111. The remaining structure is the same as that of the turning device 100 according to the first embodiment. The following description will focus on the structure that differs from that of the turning device 100 according to the first embodiment.

[0094] Figure 4 : is an overall structural diagram showing the structure of the turning device 100 involved in the third embodiment. Figure 4 As shown, the cutting tool of the turning device 100 according to the third embodiment mainly includes a cutting insert 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 includes multiple power receiving coil units 111. It should be noted that the number of power receiving coil units 111 is not limited to three. The number of power receiving coil units 111 can be four or more, six or more, eight or more, or twelve or more.

[0095] The rectifier circuit 19 includes a plurality of rectifier circuit sections 112. It should be noted that the number of rectifier circuit sections 112 is not limited to three. The number of rectifier circuit sections 112 may be six or more, or ten or more. The plurality of rectifier circuit sections 112 are connected in series with the plurality of power receiving coil sections 111, respectively.

[0096] The diode 3 includes a plurality of diode sections 113. It should be noted that the number of diode sections 113 is not limited to three. The number of diode sections 113 may be six or more, or ten or more. The plurality of diode sections 113 are connected in series with the plurality of rectifier circuit sections 112, respectively.

[0097] like Figure 4 As shown, one rectifier circuit unit 112 and one diode unit 113 are connected in series with one power receiving coil unit 111. A plurality of power receiving coil units 111 are connected in parallel. The turning tool 10 having a plurality of power receiving coil units 111 (see Figure 4 ) can be used with a machine tool 20 having a single power transmission coil 21 (see Figure 1 or Figure 2 ) can also be combined with a machine tool 20 having multiple power transmission coil units 211 (see Figure 3 )combination.

[0098] <Turning tools>

[0099] (First embodiment)

[0100] Next, the structure of the turning tool 10 according to the first embodiment will be described. Figure 5 It is a schematic plan view showing the structure of the turning tool 10 according to the first embodiment.

[0101] like Figure 5 As shown, the turning tool 10 according to the first embodiment mainly includes a cutting insert 17, a shank 16, a power receiving coil 11, a backing plate 33, and a fixing portion 34. A mounting groove 35 is provided at the front end of the shank 16. The backing plate 33 and the cutting insert 17 are disposed in the mounting groove 35. The backing plate 33 is disposed between the cutting insert 17 and the shank 16. The fixing portion 34 secures the cutting insert 17 to the shank 16. The shank 16 holds the cutting insert 17. The power receiving coil 11 is disposed on the shank 16. The shank 16 is made of metal.

[0102] Figure 6 It is along Figure 5 Schematic diagram of the cross section of line VI-VI. Figure 6 As shown, a first recess 30 is provided on side surface 1 of handle 16. The power receiving coil 11 is disposed in first recess 30. First recess 30 has a first side wall 31 and a first bottom surface 32. First side wall 31 is continuous with side surface 1. First bottom surface 32 is continuous with first side wall 31. The central axis of power receiving coil 11 is, for example, perpendicular to first bottom surface 32.

[0103] The receiving coil 11 includes, for example, a first conductive coil portion 8 and a first insulating covering portion 9. The first conductive coil portion 8 is covered by the first insulating covering portion 9. The 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 bottom surface 32. From another perspective, the first conductive coil portion 8 is wound around a straight line perpendicular to the first bottom surface 32.

[0104] The power receiving coil 11 has a fifth surface 55 and a sixth surface 56. The fifth surface 55 contacts the first bottom surface 32. The sixth surface 56 faces the fifth surface 55. In the direction along the first side wall 31, the sixth surface 56 is located between the side surface 1 and the first bottom surface 32. From another perspective, the sixth surface 56 is located inward of the side surface 1.

[0105] (Second embodiment)

[0106] Next, the structure of the turning tool 10 according to the second embodiment will be described. The structure of the turning tool 10 according to the second embodiment differs from that of the turning tool 10 according to the first embodiment primarily in that the turning tool 10 includes a first non-metallic film 38. The remaining structure is the same as that of the turning tool 10 according to the first embodiment. The following description will focus on the structure that differs from that of the turning tool 10 according to the first embodiment.

[0107] Figure 7 It is a schematic cross-sectional view showing the structure of a turning tool 10 according to the second embodiment. Figure 7 The cross section shown is along Figure 5 The cross section corresponds to the VI-VI line.

[0108] like Figure 7 As shown, the turning tool 10 includes a 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 includes a first surface 51 and a second surface 52. The first surface 51 is opposed to the first bottom surface 32. The first surface 51 is in contact with the sixth surface 56. The second surface 52 is opposed to the first surface 51. In the direction along the first sidewall surface 31, the second surface 52 is located between the side surface 1 and the first bottom surface 32. From another perspective, the second surface 52 is located inward of the side surface 1.

[0109] (Third embodiment)

[0110] Next, the structure of the turning tool 10 according to the third embodiment will be described. The structure of the turning tool 10 according to the third embodiment differs from the structure of the turning tool 10 according to the second embodiment primarily in that the width of the first recess 30 is smaller than the width of the side surface 1 of the shank 16. The remaining structure is the same as that of the turning tool 10 according to the second embodiment. The following description will focus on the structure that differs from the turning tool 10 according to the second embodiment.

[0111] Figure 8 1 is a schematic top view showing the structure of the turning tool 10 according to the third embodiment. Figure 8 As shown, a first recess 30 is provided on the side surface 1 of the shank 16. The shank 16 has a front end face 61 and a rear end face 62. The front end face 61 is provided with a mounting groove 35 for the cutting insert 17. The rear end face 62 is opposite the front end face 61. The direction from the front end face 61 toward the rear end face 62 is the long side direction of the shank 16. When viewed from a direction perpendicular to the first bottom surface 32, the direction perpendicular to the long side direction of the shank 16 is the short side direction of the shank 16.

[0112] like Figure 8As shown, the width of the first recess 30 in the longitudinal direction of the handle 16, as viewed perpendicularly to the first bottom surface 32, is greater than the width of the first recess 30 in the lateral direction of the handle 16. The width of the first recess 30 in the lateral direction of the handle 16 (first width W1) as viewed perpendicularly to the first bottom surface 32 is smaller than the width of the handle 16 in the lateral direction of the handle 16 (second width W2). Therefore, compared to a case where the width of the first recess 30 is the same as the width of the handle 16, the rigidity of the handle 16 can be improved.

[0113] Figure 9 It is along Figure 8 Schematic diagram of the cross section of line IX-IX. Figure 9 As shown, 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 connected to the rear end surface 62. The width of the first non-metallic film 38 along the longitudinal direction of the handle 16 can also be the same as the width of the power receiving coil 11. The width of the power receiving coil 11 along the longitudinal direction of the handle 16 can also be the same as the width of the first bottom surface 32.

[0114] (Fourth embodiment)

[0115] Next, the structure of the turning tool 10 according to the fourth embodiment will be described. The structure of the turning tool 10 according to the fourth embodiment differs from the structures of the turning tools 10 according to the first to third embodiments primarily in that the power receiving coil 11 includes a first power receiving coil portion 101 and a second power receiving coil portion 102. The remaining structures are the same as those of the turning tools 10 according to the first to third embodiments. The following description will focus on the structures that differ from the turning tools 10 according to the first to third embodiments.

[0116] Figure 10 1 is a perspective view showing the structure of a turning tool 10 according to a fourth embodiment. Figure 10 As shown, the power receiving coil 11 includes a first power receiving coil portion 101 and a second power receiving coil portion 102. The second power receiving coil portion 102 is separate from the first power receiving coil portion 101. The handle 16 includes 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 relative to the first side surface 1. For example, the second side surface 2 is perpendicular to the first side surface 1.

[0117] The first receiving coil unit 101 is provided on the first side surface 1. The first receiving coil unit 101 may be exposed on the first side surface 1 or positioned inward of the first side surface 1. The second receiving coil unit 102 is provided on the second side surface 2. The second receiving coil unit 102 may be exposed on the second side surface 2 or positioned inward of the second side surface 2. The first receiving coil unit 101 and the second receiving coil unit 102 may be disposed in the first recess 30, respectively. A first non-metallic film 38 may be disposed on each of the first receiving coil unit 101 and the second receiving coil unit 102.

[0118] (Fifth embodiment)

[0119] Next, the structure of the turning tool 10 according to the fifth embodiment will be described. The structure of the turning tool 10 according to the fifth embodiment differs from that of the turning tool 10 according to the first embodiment primarily in that the power receiving coil 11 includes multiple power receiving coil portions 111 arranged along the longitudinal direction of the shank 16. The remaining structure is the same as that of the turning tool 10 according to the first embodiment. The following description will focus on the structures that differ from those of the turning tool 10 according to the first embodiment.

[0120] Figure 11 1 is a schematic top view showing the structure of the turning tool 10 according to the fifth embodiment. Figure 11 As shown, the power receiving coil 11 includes multiple power receiving coil sections 111. The multiple power receiving coil sections 111 are arranged along the longitudinal direction of the shank 16. The central axis of each of the multiple power receiving coil sections 111 is, for example, perpendicular to the side surface 1. The shank 16 includes a front end face 61 and a rear end face 62. The front end face 61 is provided with a mounting groove 35 for the cutting insert 17. The rear end face 62 faces the front end face 61. The direction from the front end face 61 toward the rear end face 62 is the longitudinal direction of the shank 16. When viewed from 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 lateral direction of the shank 16.

[0121] Figure 12 It is along Figure 11 Schematic diagram of the cross section along line XII-XII. Figure 12 As shown, the plurality of power receiving coils 111 are respectively opposed to the side surface 1. The plurality of power receiving coils 111 may be respectively arranged inside the handle 16 or may be exposed on the side surface 1 of the handle 16. The plurality of power receiving coils 11 are respectively electrically connected in parallel, for example.

[0122] Figure 13 yes Figure 12 Schematic diagram of the enlarged cross section of region XIII. Figure 13As shown, each of the plurality of power receiving coil sections 111 includes, for example, a first conductive coil section 8 and a first insulating covering section 9. The first conductive coil section 8 is covered by the first insulating covering 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 handle 16. From another perspective, the first conductive coil section 8 is wound around a straight line perpendicular to the side surface 1 of the handle 16.

[0123] The power receiving coil 11 of the turning tool 10 according to the fifth embodiment includes a plurality of power receiving coil portions 111 arranged along the longitudinal direction of the shank 16. Therefore, even if the shank 16 is cut to reduce the protrusion, the remaining power receiving coil portions 111 can still be used to receive power from the power transmitting coil 21.

[0124] (Sixth embodiment)

[0125] Next, the structure of the turning tool 10 according to the sixth embodiment will be described. The structure of the turning tool 10 according to the sixth embodiment differs from the structure of the turning tool 10 according to the fifth embodiment primarily in that the turning tool 10 includes a first non-metallic film 38. The remaining structure is the same as that of the turning tool 10 according to the fifth embodiment. The following description will focus on the structure of the turning tool 10 that differs from the fifth embodiment.

[0126] Figure 14 1 is a schematic top view showing the structure of the turning tool 10 according to the sixth embodiment. Figure 14 As shown, the power receiving coil 11 includes a plurality of power receiving coil portions 111. A first recess 30 is provided on the side surface 1 of the handle 16. The plurality of power receiving coil portions 111 are disposed in the first recess 30.

[0127] Figure 15 It is along Figure 14 Schematic diagram of the cross section of line XV-XV. Figure 15 As shown, the turning tool 10 includes 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 sections 111. The first recess 30 includes a first sidewall 31 and a first bottom 32. The first sidewall 31 is continuous with the side surface 1. The first bottom 32 is continuous with the first sidewall 31.

[0128] First non-metallic film 38 has a first surface 51 and a second surface 52. First surface 51 is opposite first bottom surface 32. Second surface 52 is opposite first surface 51. Second surface 52 is located between side surface 1 and first bottom surface 32 along first sidewall surface 31. Second surface 52 is located inward of side surface 1 of handle 16.

[0129] The first non-metallic film 38 is, for example, a translucent resin. The translucent resin can be transparent or translucent. Examples of materials for the translucent resin include acrylic. When the first non-metallic film 38 is a translucent resin, the user of the turning tool 10 can visually confirm the positions of the multiple power receiving coils 111 located beneath the first non-metallic film 38. Therefore, when the shank 16 of the turning tool 10 is cut, the cut position can be visually confirmed without exposing the individual power receiving coils 111.

[0130] (Seventh embodiment)

[0131] Next, the structure of the turning tool 10 according to the seventh embodiment will be described. The structure of the turning tool 10 according to the seventh embodiment differs from that of the turning tool 10 according to the sixth embodiment primarily in that the first non-metallic film 38 is made of a non-translucent resin. The remaining structure is the same as that of the turning tool 10 according to the sixth embodiment. The following description will focus on the structure that differs from that of the turning tool 10 according to the sixth embodiment.

[0132] Figure 16 This is a schematic top view showing the structure of a turning tool 10 according to a seventh embodiment. The first non-metallic film 38 can be, for example, a non-translucent resin. Examples of materials constituting the non-translucent resin include PTFE (polytetrafluoroethylene). A mark 4 indicating the cutting position of the handle 16 is provided on the side surface 1 of the handle 16. The mark 4 indicating the cutting position of the handle 16 can be provided by writing it on the side surface 1 of the handle 16 with a felt pen or by forming a groove in the side surface 1 of the handle 16.

[0133] If the first non-metallic film 38 is made of a non-translucent resin, the user of the turning tool 10 cannot visually confirm the positions of the multiple power receiving coil units 111 located below the first non-metallic film 38. By providing the marking 4 indicating the cutting position on the shank 16, the cutting position can be identified without exposing the individual power receiving coil units 111, even if the first non-metallic film 38 is made of a non-translucent resin.

[0134] (Eighth Embodiment)

[0135] Next, the structure of the turning tool 10 according to the eighth embodiment will be described. The structure of the turning tool 10 according to the eighth embodiment differs from that of the turning tool 10 according to the sixth embodiment primarily in that the first recessed portion 30 is multiple. The remaining structure is the same as that of the turning tool 10 according to the sixth embodiment. The following description will focus on the structure that differs from that of the turning tool 10 according to the sixth embodiment.

[0136] Figure 17It is a schematic plan view showing the structure of a turning tool 10 according to an eighth embodiment. Figure 18 It is along Figure 17 Schematic diagram of the cross section of line XVIII-XVIII. Figure 17 as well as Figure 18 As shown, multiple first recesses 30 may be provided on the side surface 1 of the handle 16. The first non-metallic film 38 includes multiple first non-metallic film portions 311. The multiple first non-metallic film portions 311 are disposed in each of the multiple first recesses 30. The multiple power receiving coil portions 111 are disposed in each of the multiple first recesses 30. One power receiving coil portion 111 and one first non-metallic portion are disposed in each first recess 30. In the longitudinal direction of the handle 16, the width of the first non-metallic film portion 311 may be greater than the width of the power receiving coil portion 111.

[0137] (Ninth embodiment)

[0138] Next, the structure of the turning tool 10 according to the ninth embodiment will be described. The structure of the turning tool 10 according to the ninth embodiment differs from the structure of the turning tool 10 according to the fifth embodiment primarily in that the distance between two adjacent power receiving coils 111 decreases as they move away from the cutting insert 17. The remaining structure is the same as that of the turning tool 10 according to the fifth embodiment. The following description will focus on the structure of the turning tool 10 that differs from the fifth embodiment.

[0139] Figure 19 It is a schematic plan view showing the structure of a turning tool 10 according to a ninth embodiment. Figure 20 It is along Figure 19 Schematic diagram of the cross section of the XX-XX line. Figure 19 as well as Figure 20 As shown, the distance between adjacent power receiving coil portions 111 among the plurality of power receiving coil portions 111 decreases as they move away from the cutting blade 17. From another perspective, the distance between adjacent power receiving coil portions 111 among the plurality of power receiving coil portions 111 decreases as they move from the front end face 61 toward the rear end face 62. The power receiving coil portions 111 are arranged sparsely on the front end face 61 side and densely on the rear end face 62 side.

[0140] (Tenth embodiment)

[0141] Next, the structure of the turning tool 10 according to the tenth embodiment will be described. The structure of the turning tool 10 according to the tenth embodiment differs from the structure of the turning tool 10 according to the fifth embodiment primarily 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. The remaining structure is the same as that of the turning tool 10 according to the fifth embodiment. The following description will focus on the structure of the turning tool 10 that differs from the fifth embodiment.

[0142] Figure 21 1 is a schematic top view showing the structure of the turning tool 10 according to the tenth embodiment. Figure 21 As shown, the multiple power receiving coil units 111 are alternately arranged on both sides of a straight line A parallel to the longitudinal direction of the handle 16. Specifically, the centers of the multiple power receiving coil units 111 are alternately arranged on both sides of the straight line A. From another perspective, the multiple power receiving coil units 111 are arranged in a staggered pattern. Alternatively, when viewed in a direction perpendicular to the side surface 1, half of the multiple power receiving coil units 111 may be arranged on one side of the straight line, and the remaining half may be arranged on the other side of the straight line.

[0143] (Eleventh embodiment)

[0144] Next, the structure of the turning tool 10 according to the eleventh embodiment will be described. The structure of the turning tool 10 according to the eleventh embodiment differs from the structure of the turning tool 10 according to the fifth embodiment primarily in that the multiple power receiving coil portions 111 are inclined relative to the side surface 1 of the shank 16. The remaining structure is the same as that of the turning tool 10 according to the fifth embodiment. The following description will focus on the structure of the turning tool 10 that differs from the fifth embodiment.

[0145] Figure 22 It is a schematic plan view showing the structure of a turning tool 10 according to an eleventh embodiment. Figure 23 It is along Figure 22 Schematic diagram of the cross section of line XXIII-XXIII. Figure 22 as well as Figure 23 As shown, the shank 16 has a front face 61, a rear face 62, and a side face 1. The front face 61 is a face on which the cutting insert 17 is mounted. The rear face 62 is opposite to the front face 61. The side face 1 is located between the front face 61 and the rear face 62.

[0146] like Figure 23 As shown, the plurality of power receiving coil units 111 each have 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. Figure 23As shown, the multiple power receiving coil portions 111 are tilted relative to the side surface 1 such that the distance between the front end portion 63 and the side surface 1 (first distance D1) is smaller than the distance between the rear end portion 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, the multiple power receiving coils 11 are tilted toward the rotation axis 29 of the turret 22. Therefore, the multiple power receiving coils 11 can each efficiently receive power from the power transmitting coil 21.

[0147] <Turret>

[0148] (First embodiment)

[0149] Next, the structure of the turret 22 according to the first embodiment will be described. Figure 24 1 is a schematic top view showing the structure of the turret 22 according to the first embodiment. Figure 24 As shown, the turret 22 includes a mounting surface 45, a rotation axis 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 rotate about the rotation axis 29. Rotating the turret 22 causes the turning tool 10 to rotate about the rotation axis 29. Multiple turning tools 10 may be mounted on the turret 22. Rotating the turret 22 allows a desired turning tool 10 to be positioned at a desired location among the multiple turning tools 10.

[0150] like Figure 24 As shown, the power transmission coil 21 is arranged to be wound 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 also be aligned 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 and is, for example, two. The number of turns of the power transmission coil 21 may also be three or more. The power transmission coil 21 is, for example, mounted on the mounting surface 45 of the turret 22.

[0151] like Figure 24 As shown, the power transmission coil 21 is arranged to overlap the power reception coil 11 when viewed in a direction perpendicular to the mounting surface 45 of the turret 22. From another perspective, the power transmission coil 21 and the power reception coil 11 are opposed to each other. The central axis of the power transmission coil 21 may also be parallel to the central axis of the power reception coil 11.

[0152] Figure 25 It is along Figure 24 Schematic diagram of the cross section of line XXV-XXV. Figure 25As shown, a second recess 40 is provided on the mounting surface 45 of the turret 22. The second recess 40 has a second sidewall 41 and a second bottom 42. The second sidewall 41 is connected to the mounting surface 45. The second bottom 42 is connected to the second sidewall 41. The power transmission coil 21 is disposed in the second recess 40. The power transmission coil 21 may also contact the second sidewall 41 and the second bottom 42.

[0153] The power transmission coil 21 includes, for example, a second conductive coil portion 43 and a second insulating covering portion 44. The second conductive coil portion 43 is covered by the second insulating covering portion 44. The power transmission coil 21 may be, for example, a flexible printed circuit (FPC). The second insulating covering portion 44 may also be in contact with both the second side wall surface 41 and the second bottom surface 42.

[0154] (Second embodiment)

[0155] Next, the structure of the turret 22 according to the second embodiment will be described. The structure of the turret 22 according to the second embodiment differs from that of the turret 22 according to the first embodiment primarily in that the power transmission coil 21 is provided as a plurality of power transmission coil sections 211. The remaining structure is the same as that of the turret 22 according to the first embodiment. The following description will focus on the structure of the turret 22 that differs from that of the first embodiment.

[0156] Figure 26 It is a schematic plan view showing the structure of a turret 22 according to the second embodiment. Figure 27 It is along Figure 26 Schematic diagram of the cross section of line XXVII-XXVII. Figure 26 As shown, the power transmission coil 21 is provided as a plurality of power transmission coil sections 211. The plurality of power transmission coil sections 211 are respectively arranged around the rotation axis 29 of the turret 22. The plurality of power transmission coil sections 211 can be arranged radially when viewed from the rotation axis 29.

[0157] like Figure 26 As shown, the central axis of each of the multiple 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 multiple power transmission coil units 211 extends, for example, perpendicularly to the mounting surface 45 of the turret 22. The number of turns of each of the multiple power transmission coil units 211 is not particularly limited and is, for example, two. The number of turns of the power transmission coil unit 211 may also be three or more. The multiple power transmission coil units 211 are, for example, respectively installed on the mounting surface 45 of the turret 22. The number of power transmission coil units 211 is not particularly limited and is, for example, twelve.

[0158] like Figure 26As shown, the power transmission coil unit 211 is arranged to overlap the power reception coil unit 111 when viewed from a direction perpendicular to the mounting surface 45 of the turret 22. From another perspective, the power transmission coil unit 211 is positioned opposite the power reception coil unit 111. The central axis of the power transmission coil unit 211 may also be parallel to the central axis of the power reception coil unit 111.

[0159] like Figure 26 as well as Figure 27 As shown, multiple second recesses 40 can be provided on the mounting surface 45 of the turret 22. Multiple power transmission coil units 211 can be respectively provided in each of the multiple second recesses 40. Alternatively, the multiple second recesses 40 can be arranged radially as viewed from the rotation axis 29. The multiple power transmission coil units 211 can be respectively provided on the second bottom surface 42 of the second recess 40.

[0160] (Third embodiment)

[0161] Next, the structure of the turret 22 according to the third embodiment will be described. The structure of the turret 22 according to the third embodiment differs from that of the turret 22 according to the first embodiment primarily in that the turret 22 includes a second non-metallic film 46. The remaining structure is the same as that of the turret 22 according to the first embodiment. The following description will focus on the structure of the turret 22 that differs from that of the first embodiment.

[0162] Figure 28 It is a schematic plan view showing the structure of a turret 22 according to the third embodiment. Figure 29 It is along Figure 28 as well as Figure 30 Schematic diagram of the cross section of line XXIX-XXIX. Figure 28 as well as Figure 29 As shown, the turret 22 has a second non-metallic film 46. The second non-metallic film 46 is disposed 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.

[0163] 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 contacts the power transmission coil 21. The fourth surface 54 faces the third surface 53. In a direction along the second sidewall 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 inward of the mounting surface 45.

[0164] (Fourth embodiment)

[0165] Next, the structure of the turret 22 according to the fourth embodiment will be described. The structure of the turret 22 according to the fourth embodiment differs from the structure of the turret 22 according to the third embodiment primarily in that the second recessed portion 40 is formed radially. The remaining structure is the same as that of the turret 22 according to the third embodiment. The following description will focus on the structure of the turret 22 that differs from the third embodiment.

[0166] Figure 30 1 is a schematic top view showing the structure of the turret 22 according to the fourth embodiment. Figure 29 as well as Figure 30 As shown, the plurality of second recesses 40 are formed radially when viewed from the rotation axis 29 of the turret 22. The plurality of second recesses 40 extend radially of the turret 22. When viewed from a direction parallel to the rotation axis 29 of the turret 22, the plurality of second recesses 40 are each rectangular in shape, for example.

[0167] Multiple second non-metallic films 46 are disposed in each of the multiple second recesses 40. The multiple second non-metallic films 46 each cover the power transmission coil 21. The multiple second non-metallic films 46 are formed radially as viewed from the rotation axis 29 of the turret 22. The multiple second non-metallic films 46 are formed radially as viewed from the rotation axis 29 of the turret 22. The multiple second non-metallic films 46 extend radially of the turret 22. When viewed parallel to the rotation axis 29 of the turret 22, each of the multiple second non-metallic films 46 has a rectangular shape, for example.

[0168] (Fifth embodiment)

[0169] Next, the structure of the turret 22 according to the fifth embodiment will be described. The structure of the turret 22 according to the fifth embodiment differs from the structure of the turret 22 according to the second embodiment primarily in that the width of the second recess 40 is smaller than the width of the side surface 1 of the shank 16. The remaining structure is the same as that of the turret 22 according to the second embodiment. The following description will focus on the structure of the turret 22 that differs from the second embodiment.

[0170] Figure 31 It is a schematic plan view showing the structure of a turret 22 according to the fifth embodiment. Figure 32 It is along Figure 31 Schematic diagram of the cross section of line XXXII-XXXII. Figure 31 as well as Figure 32As shown, multiple power transmission coil units 211 are arranged around the rotation axis 29 of the turret 22. The turret 22 has a mounting surface 45 that faces the turning tool 10. Multiple second recesses 40 are provided on the mounting surface 45. The multiple power transmission coil units 211 are arranged in each of the multiple second recesses 40. The second non-metallic film 46 includes multiple second non-metallic film portions 114. The multiple second non-metallic film portions 114 are arranged in each of the multiple second recesses 40. The multiple second non-metallic film portions 114 cover each of the multiple power transmission coil units 211.

[0171] The plurality of second recesses 40 each have a second sidewall surface 41 and a second bottom surface 42. The second sidewall surface 41 is connected to the mounting surface 45. The second bottom surface 42 is connected to the second sidewall surface 41. The plurality of second non-metallic film portions 114 each have a third surface 53 and a fourth surface 54. The third surface 53 is opposite the second bottom surface 42. The fourth surface 54 is opposite the third surface 53. In a direction along the second sidewall surface 41, the fourth surface 54 is located between the mounting surface 45 and the second bottom surface 42.

[0172] Figure 32 The cross section shown is a cross section perpendicular to the radial direction of the turret 22. Figure 32 As shown, in a cross section of the turret 22 perpendicular to the radial direction, the width of the second recess 40 (third width W3) can be smaller than the width of the side surface 1 of the handle 16 (second width W2). In a cross section of the turret 22 perpendicular to the radial direction, the width of the second recess 40 (third width W3) can be smaller than the width of the first recess 30 (first width W1). In a cross section of the turret 22 perpendicular to the radial direction, the width of the power receiving coil portion 111 can be greater than the width of the power transmitting coil portion 211.

[0173] <Combination of turning tool and turret>

[0174] The turning tool 10 of any one of the first to fourth embodiments can be combined with the turret 22 of any one of the first to fifth embodiments. The turning tool 10 of any one of the fifth to eleventh embodiments can be combined with the turret 22 of the second or fifth embodiment. The turning tool 10 of any one of the fifth to eleventh embodiments can also be combined with the turret 22 of any one of the first, third, and fourth embodiments.

[0175] <Effects>

[0176] Next, the effects of the turning tool 10 and the turning device 100 according to the present disclosure will be described.

[0177] In the turning tool 10 disclosed herein, the power receiving coil 11 receives power from the power transmitting coil 21 in a contactless 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. This enables contactless power supply to the sensor 12. Consequently, it is possible to ensure high waterproofness while minimizing interference with the rotation of the turret 22.

[0178] The turning tool 10 according to the present disclosure further includes a cutting insert 17 and a shank 16 for holding the cutting insert 17. The power receiving coil 11 is disposed on the shank 16. This allows the area of the power receiving coil 11 to be increased.

[0179] According to the turning tool 10 of 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 securely attached to the turret 22.

[0180] The turning tool 10 according to the present disclosure further includes the first non-metallic film 38, which is disposed in the first recess 30 and covers the power receiving coil 11. This improves the waterproofness of the power receiving coil 11.

[0181] According to the turning tool 10 of the present disclosure, the first recess 30 includes a first sidewall surface 31 connected to the side surface 1 and a first bottom surface 32 connected to the first sidewall surface 31. The first non-metallic film 38 includes a first surface 51 opposite the first bottom surface 32 and a second surface 52 opposite the first surface 51. The second surface 52 is located between the side surface 1 and the first bottom surface 32 along the first sidewall surface 31. This prevents the first non-metallic film 38 from extending from the first recess 30 and climbing onto the side surface 1 of the shank 16. Consequently, the side surface 1 of the shank 16 can be securely attached to the turret 22.

[0182] According to the turning tool 10 of the present disclosure, the power receiving coil 11 includes a first power receiving coil portion 101 and a second power receiving coil portion 102 separate from the first power receiving coil portion 101. The shank 16 includes a first side surface 1 and a second side surface 2 connected to and inclined relative 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. This allows efficient power reception from the turret 22 regardless of the surface on which the turret 22 is mounted.

[0183] According to the turning tool 10 of the present disclosure, the power receiving coil 11 includes a plurality of power receiving coil portions 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 its protrusion.

[0184] According to the turning tool 10 of the present disclosure, a first recess 30 is provided on the side surface 1 of the shank 16, where each of the plurality of power receiving coil units 111 is disposed. 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 units 111. This improves the waterproofing properties of each of the plurality of power receiving coil units 111.

[0185] According to the turning tool 10 of the present disclosure, the first recess 30 includes a first sidewall surface 31 connected to the side surface 1 and a first bottom surface 32 connected to the first sidewall surface 31. The first non-metallic film 38 includes a first surface 51 opposite the first bottom surface 32 and a second surface 52 opposite the first surface 51. The second surface 52 is located between the side surface 1 and the first bottom surface 32 along the first sidewall surface 31. This prevents the first non-metallic film 38 from extending from the first recess 30 and climbing onto the side surface 1 of the shank 16. Consequently, the side surface 1 of the shank 16 can be securely attached to the turret 22.

[0186] In the turning tool 10 of the present disclosure, the first non-metallic film 38 is a translucent resin. This allows the user of the turning tool 10 to visually confirm the positions of the multiple power receiving coils 111 located beneath the first non-metallic film 38. Therefore, when the shank 16 of the turning tool 10 is cut, the cut position can be visually confirmed without exposing the individual power receiving coils 111.

[0187] In the turning tool 10 of the present disclosure, the first non-metallic film 38 is made of a non-translucent resin. A mark 4 indicating the cutting position of the shank 16 is provided on the shank 16. If the first non-metallic film 38 is made of a non-translucent resin, the user of the turning tool 10 cannot visually confirm the positions of the multiple power receiving coil units 111 located beneath the first non-metallic film 38. By providing the mark 4 indicating the cutting position on the shank 16, even if the first non-metallic film 38 is made of a non-translucent resin, the cutting position can be identified without exposing each power receiving coil unit 111.

[0188] According to the turning tool 10 of the present disclosure, the distance between two adjacent power receiving coil portions 111 decreases as they move away from the cutting insert 17. This prevents a reduction in power from the turret 22 even when the shank 16 is cut to reduce its protrusion.

[0189] According to the turning tool 10 of the present disclosure, the plurality of power receiving coils 111 are alternately arranged on both sides of a straight line parallel to the longitudinal direction. Thus, when the turning tool 10 is mounted on the turret 22, power can be received from the turret 22 even if the shank 16 is positioned off-center from the power transmitting coils 21.

[0190] According to the turning tool 10 of the present disclosure, the shank 16 includes a front end face 61 on which the cutting insert 17 is mounted, a rear end face 62 opposite the front end face 61, and a side face 1 located between the front end face 61 and the rear end face 62. The plurality of power receiving coil sections 111 each include a front end portion 63 opposite the front end face 61 and a rear end portion 64 opposite the rear end face 62. The plurality of power receiving coil sections 111 are each inclined relative 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. Thus, when the turning tool 10 is mounted on the turret 22, the surface of the power receiving coil 11 is inclined toward the central axis of the turret 22. Therefore, even the power receiving coil section 111, which is arranged to protrude from the turret 22, can receive power from the turret 22.

[0191] According to the turning device 100 according to the present disclosure, the turret 22 includes the power transmission coil 21 that transmits electric power to the power reception coil 11. Thus, electric power can be supplied from the turret 22 to the turning tool 10.

[0192] According to the turning device 100 of the present disclosure, the power transmission coil 21 is arranged to be wound around the rotating shaft 29 of the turret 22. Therefore, power can be supplied from the power transmission coil 21 to the power receiving coil 11 regardless of where the turning tool 10 is mounted on the mounting surface 45 in the circumferential direction.

[0193] According to the turning device 100 of the present disclosure, the turret 22 has a mounting surface 45 that faces the turning tool 10. A second recess 40 is provided on the mounting surface 45. The power transmission coil 21 is disposed 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 securely mounted on the turret 22.

[0194] According to the turning device 100 of the present disclosure, the turret 22 includes the second non-metallic film 46, which is disposed in the second recess 40 and covers the power transmission coil 21. This improves the waterproofness of the power transmission coil 21.

[0195] According to the turning device 100 of the present disclosure, the second recess 40 includes a second sidewall surface 41 connected to the mounting surface 45 and a second bottom surface 42 connected to the second sidewall surface 41. The second non-metallic film 46 includes a third surface 53 opposite the second bottom surface 42 and a fourth surface 54 opposite the third surface 53. The fourth surface 54 is located between the mounting surface 45 and the second bottom surface 42 along the second sidewall surface 41. This prevents the second non-metallic film 46 from extending from the second recess 40 and climbing onto the mounting surface 45 of the turret 22. Consequently, the shank 16 can be securely mounted to the mounting surface 45 of the turret 22.

[0196] According to the turning device 100 of the present disclosure, the power transmission coil 21 is provided as a plurality of power transmission coil units 211 arranged around the rotating shaft 29 of the turret 22. This allows power to be supplied only to the power transmission coil units 211 that require it, thereby reducing power consumption.

[0197] According to the turning device 100 of the present 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 plurality of power transmission coil units 211 are respectively disposed in the second recess 40.

[0198] According to the turning device 100 of the present disclosure, the turret 22 includes the second non-metallic film 46 disposed in the second recess 40 and covering each of the plurality of power transmission coils 211. This improves the waterproofness of each of the plurality of power transmission coils 211.

[0199] According to the turning device 100 of the present disclosure, the second recess 40 includes a second sidewall surface 41 connected to the mounting surface 45 and a second bottom surface 42 connected to the second sidewall surface 41. The second non-metallic film 46 includes a third surface 53 opposite the second bottom surface 42 and a fourth surface 54 opposite the third surface 53. The fourth surface 54 is located between the mounting surface 45 and the second bottom surface 42 along the second sidewall surface 41. This prevents the second non-metallic film 46 from extending from the second recess 40 and climbing onto the mounting surface 45 of the turret 22. Consequently, the shank 16 can be securely mounted to the mounting surface 45 of the turret 22.

[0200] The embodiments disclosed herein are to be considered in all respects as illustrative and non-restrictive. The scope of the present application is indicated by the claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0201] Description of Reference Numerals

[0202] 1: First side surface (side surface); 2: Second side surface; 3: Diode; 4: Mark; 8: First conductive coil portion; 9: First insulating covering portion; 10: Turning tool; 11: Power receiving coil; 12: Sensor; 13: Control unit; 14: Wireless unit; 16: Shank; 17: Cutting blade; 18: Second resonant capacitor; 19: Rectifier circuit; 20: Machine tool; 21: Power transmitting 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 surface; 33: Pad; 34: Fixing portion; 35: Mounting groove; 38: First non-metallic film; 40: Second recess; 41: Second side wall; 42: Second bottom surface; 43: First Two conductive coil portions; 44: Second insulating covering portion; 45: Mounting surface; 46: Second non-metallic 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 portion; 64: Rear end portion; 100: Turning device; 101: First receiving coil portion; 102: Second receiving coil portion; 111: Receiving coil portion; 112: Rectifier circuit portion; 113: Diode portion; 114: Second non-metallic film portion; 211: Transmitting coil portion; 212: Switch portion; 311: First non-metallic film portion; A: Straight line; D1: First distance; D2: Second distance; W1: First width; W2: Second width; W3: Third width.

Claims

1. A turning tool capable of being mounted on a turret, wherein: The turning tool comprises: a shank that holds the cutting insert; a power receiving coil that receives power from the power transmitting coil in a contactless manner; a sensor electrically connected to the power receiving coil; as well as a wireless unit that transmits the data detected by the sensor to the outside, The power transmission coil is arranged at a position in the turret corresponding to a position where the turning tool is mounted. The power receiving coil is arranged in a first recess provided on the side surface of the handle. In a state where the handle is attached to the turret, the power receiving coil receives the electric power transmitted from the power transmitting coil in a contactless manner.

2. The turning tool according to claim 1, wherein The turning tool further includes a first non-metallic film disposed in the first recess and covering the power receiving coil.

3. The turning tool according to claim 2, wherein The first concave portion has a first sidewall surface connected to the side surface and a first bottom surface connected to the first sidewall surface. The first non-metallic film has a first surface opposite to the first bottom surface and a second surface opposite to the first surface. In a direction along the first sidewall surface, the second surface is located between the side surface and the first bottom surface.

4. The turning tool according to any one of claims 1 to 3, wherein The power receiving coil includes a first power receiving coil portion and a second power receiving coil portion separated from the first power receiving coil portion. The handle has a first side surface and a second side surface connected to the first side surface and inclined relative to the first side surface. The first power receiving coil is provided on the first side surface. The second power receiving coil unit is disposed on the second side surface.

5. The turning tool according to claim 1, wherein The power receiving coil includes a plurality of power receiving coil portions arranged along the longitudinal direction of the handle.

6. The turning tool according to claim 5, wherein A first recess is provided on the side of the handle for arranging the plurality of power receiving coils. The turning tool includes a first non-metallic film disposed in the first recess and covering each of the plurality of power receiving coils.

7. The turning tool according to claim 6, wherein The first concave portion has a first sidewall surface connected to the side surface and a first bottom surface connected to the first sidewall surface. The first non-metallic film has a first surface opposite to the first bottom surface and a second surface opposite to the first surface. In a direction along the first sidewall surface, the second surface is located between the side surface and the first bottom surface.

8. The turning tool according to claim 6 or 7, wherein: The first non-metallic film is a light-transmitting resin.

9. The turning tool according to claim 6 or 7, wherein: The first non-metallic film is a non-light-transmitting resin. The handle is provided with a mark indicating a cutting position of the handle.

10. The turning tool according to any one of claims 5 to 7, wherein The distance between two adjacent power receiving coil portions among the plurality of power receiving coil portions becomes shorter as the distance from the cutting blade increases.

11. The turning tool according to any one of claims 5 to 7, wherein The plurality of power receiving coil units are alternately arranged on both sides of a straight line parallel to the longitudinal direction.

12. The turning tool according to claim 5, wherein The shank has a front end face on which the cutting insert is mounted, a rear end face opposite to the front end face, and a side face between the front end face and the rear end face. Each of the plurality of power receiving coil units includes a front end portion facing the front end surface and a rear end portion facing the rear end surface. Each of the plurality of power receiving coil units is inclined relative to the side surface such that a distance between the front end portion and the side surface is smaller than a distance between the rear end portion and the side surface.

13. A turning device, wherein: The turning device comprises: The turning tool according to any one of claims 1 to 12; and The turret for mounting the turning tool, The turret includes the power transmission coil that transmits electric power to the power reception coil.

14. The turning device according to claim 13, wherein: The power transmission coil is arranged to be wound around the rotation axis of the turret.

15. The turning device according to claim 13 or 14, wherein: The turret has a mounting surface opposite to the turning tool, A second recess is provided on the mounting surface, The power transmission coil is disposed in the second recess.

16. The turning device according to claim 15, wherein The turret includes a second non-metallic film, and the second non-metallic film is disposed in the second recess and covers the power transmission coil.

17. The turning device according to claim 16, wherein: The second recess has a second side wall surface connected to the mounting surface and a second bottom surface connected to the second side wall surface. The second non-metallic film has a third surface opposite to the second bottom surface and a fourth surface opposite to the third surface. In a direction along the second side wall surface, the fourth surface is located between the mounting surface and the second bottom surface.

18. The turning device according to claim 13, wherein The power transmission coil is provided as a plurality of power transmission coil portions arranged around the rotation axis of the turret.

19. The turning device according to claim 18, wherein The turret has a mounting surface opposite to the turning tool, A second recess is provided on the mounting surface, The plurality of power transmission coil units are respectively arranged in the second recessed portion.

20. The turning device according to claim 19, wherein The turret includes a second non-metallic film, and the second non-metallic film is disposed in the second recess and covers each of the plurality of power transmission coils.

21. The turning device according to claim 20, wherein The second recess has a second side wall surface connected to the mounting surface and a second bottom surface connected to the second side wall surface. The second non-metallic film has a third surface opposite to the second bottom surface and a fourth surface opposite to the third surface. In a direction along the second side wall surface, the fourth surface is located between the mounting surface and the second bottom surface.

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