Cutting system, machine tool, and shield member

Abstract

A cutting system according to an embodiment of the present disclosure is provided with: a cutting tool having a tool body disposed in a machining space of a machine tool, a sensor provided in the tool body, and a wireless communication unit for transmitting an output of the sensor; a power supply device for wirelessly supplying power to the cutting tool in the machining space; and a shield member attached to a window portion of a cover defining the processing space, the shield member including: a shield body configured to shield radio waves radiated into the processing space; and a communication antenna for communicating with the wireless communication unit.

Description

Technical Field

[0001] This disclosure relates to cutting systems, machine tools, and shielding components. Background Technology

[0002] Patent Document 1 discloses a cutting tool comprising a main body, a sensor unit disposed on the main body, a wireless communication unit that transmits information representing the sensor's output to the outside, and a battery that supplies power to each part. The battery is built into a space provided in the main body, namely a battery housing.

[0003] This cutting tool can monitor its status during machining using sensors and transmit the data externally.

[0004] Existing technical documents Patent documents Patent document 1: International Publication No. 2022 / 230149. Summary of the Invention

[0005] The cutting system disclosed herein includes: a cutting tool, a tool body having a machining space disposed on a machine tool, a sensor disposed on the tool body, and a wireless communication unit for transmitting the output of the sensor; a power supply device for wirelessly powering the cutting tool in the machining space; and a shielding member installed on a window portion of a cover defining the machining space. The shielding member includes: a shielding body for shielding radio waves radiated into the machining space; and a communication antenna for communicating with the wireless communication unit. Attached Figure Description

[0006] Figure 1 This is a diagram showing the overall configuration of the cutting system involved in the implementation method.

[0007] Figure 2 This is a block diagram illustrating an example of the structure of a cutting tool.

[0008] Figure 3 This is a diagram showing an example of the appearance of a cover for a machine tool equipped with shielding components.

[0009] Figure 4 This is a magnified view of the window.

[0010] Figure 5 yes Figure 4 Sectional view along line AA in the middle.

[0011] Figure 6 This is a cross-sectional view of the shielding member involved in the first variation of the first embodiment.

[0012] Figure 7This is a cross-sectional view of the shielding member involved in the second variation of the first embodiment.

[0013] Figure 8 This is a cross-sectional view of the shielding member involved in the third variation of the first embodiment.

[0014] Figure 9 This is an enlarged view of the window according to the second embodiment.

[0015] Figure 10 yes Figure 9 BB line sectional view in the middle.

[0016] Figure 11 This is an enlarged view of the window involved in the third embodiment.

[0017] Figure 12 yes Figure 11 The CC line sectional view in the middle. Detailed Implementation

[0018] [The problem this disclosure aims to solve] In the aforementioned conventional cutting tools, when the battery power is depleted, it needs to be replaced with a new one. In this case, the old battery must be removed from the battery holder and a new battery installed, making battery replacement difficult during machining.

[0019] Therefore, the following potential problem exists: if the battery power is depleted during processing due to the extended processing time, the status of the cutting tool cannot be monitored afterwards.

[0020] Therefore, wireless power supply for the sensors of the cutting tool is being considered. If the sensors of the cutting tool are wirelessly powered, the cutting tool can be powered during machining, allowing for continuous monitoring of its status even when machining time increases.

[0021] Here, when wirelessly powering the sensor, countermeasures are needed to suppress the leakage of wirelessly powered radio waves to the outside, such as from the observation window of the enclosure that defines the processing space.

[0022] However, if countermeasures are taken to suppress the leakage of radio waves from the observation window and other external sources, there is a risk that the radio waves emitted by the wireless communication unit will also be suppressed from leaking to the outside, making it impossible to obtain the sensor output from the outside of the machine tool.

[0023] Therefore, a technology is desired that can acquire the sensor output outside the machining space while suppressing the leakage of radio waves outside the machining space.

[0024] [The Effects of This Disclosure] According to this disclosure, it is possible to acquire the sensor output outside the machining space while suppressing the leakage of radio waves outside the machining space.

[0025] First, the contents of the embodiments of this disclosure will be described.

[0026] [Summary of Implementation Methods] (1) The cutting system according to the embodiments of this disclosure includes: a cutting tool, a tool body having a machining space disposed in a machine tool, a sensor disposed in the tool body, and a wireless communication unit for transmitting the output of the sensor; a power supply device for wirelessly powering the cutting tool in the machining space; and a shielding member installed in a window portion of a cover that defines the machining space. The shielding member includes: a shielding body for shielding radio waves radiated into the machining space; and a communication antenna for communicating with the wireless communication unit.

[0027] Based on the above configuration, since it has a shielding member installed on the window to shield radio waves, leakage of radio waves from the window can be suppressed. Furthermore, this shielding member has a communication antenna for communicating with a wireless communication unit, thus enabling the transmission and reception of radio waves between the communication antenna and the wireless communication unit within the machining space. As a result, while suppressing leakage of radio waves outside the machining space, the output of sensors can be acquired outside the machine tool.

[0028] (2) Alternatively, in the cutting system described in (1) above, the shielding body has: an opposing surface facing the outer surface of the window; and an opening extending between the opposing surface and the opposing surface. If the shielding member also has a housing made of a material capable of shielding the radio waves that seals the opening, the housing has a retaining member that retains the communication antenna between the housing and the outer surface of the window.

[0029] In this configuration, the window is exposed at the opening. The communication antenna is held between the housing and the exposed portion of the window by a retaining member. Therefore, the communication antenna is positioned opposite the window without being shielded. Consequently, radio waves transmitted and received between the communication antenna and the wireless communication unit are not blocked by the shield. Therefore, if the received signal based on the communication antenna is retrieved externally via a wired connection, the sensor output can be obtained from outside the machine tool.

[0030] In addition, the casing that seals the opening is made of raw materials that can shield radio waves, thus preventing radio waves from leaking out of the opening.

[0031] (3) Alternatively, in the cutting system described in (2) above, the shielding member may also include a substrate member having a stacked surface on which the shielding body is stacked.

[0032] In this case, for example, even if the shield is sheet-like, the shield is held by the substrate member, making the handling of the shield member easier.

[0033] (4) In the cutting system described in (1) above, when the shield has a counter surface that is opposite to the outer surface of the window, the communication antenna is sometimes disposed between the outer surface of the window and the counter surface.

[0034] In this case, the shield is not located between the communication antenna and the outer surface of the window. Therefore, radio waves transmitted and received between the communication antenna and the wireless communication unit are not blocked by the shield. Thus, if the received signal based on the communication antenna is retrieved externally via a wired connection, the sensor output can be obtained from outside the machine tool.

[0035] (5) Alternatively, in any of the cutting systems described in (1) to (4) above, if the shielding body includes an electromagnetic wave absorber that absorbs electromagnetic waves of a predetermined frequency band, the predetermined frequency band includes the frequency band of electromagnetic waves emitted by the power supply device.

[0036] In this case, the electromagnetic waves from the power supply unit are absorbed by the shield, suppressing leakage outside the machining space. On the other hand, if the frequency band of the electromagnetic waves from the wireless communication unit is outside the predetermined frequency band, electromagnetic wave transmission and reception can be performed between the communication antenna and the wireless communication unit. As a result, it is possible to acquire sensor outputs outside the machine tool while suppressing leakage of electromagnetic waves from the power supply unit outside the machining space.

[0037] (6) Alternatively, in any of the cutting systems described in (1) to (4) above, if the shield is formed of a conductive metal plate and has a monitoring window that extends between the opposing surfaces and the opposite surfaces of the opposing surfaces, the shielding member may also have an opening and closing door that blocks the monitoring window.

[0038] In this case, the shield made of conductive metal plate is not transparent. However, the shield has a monitoring window that can be opened and closed through a door, so that the machining space can be monitored from the window of the machine tool as needed.

[0039] (7) Alternatively, in any of the cutting systems described in (1) to (4) above, if the shielding body is formed of a conductor metal plate, the shielding member may further include: a camera unit for taking pictures of the processing space; and an output unit for outputting the image taken by the camera unit.

[0040] In this case, the shield made of conductive metal plate is not transparent. However, the imaging and output sections allow for external monitoring of the processing space.

[0041] (8) Another embodiment, viewed from another perspective, is a machine tool that uses a cutting tool and is equipped with a power supply device for wirelessly supplying power to the cutting tool. The cutting tool has a tool body disposed in a machining space, a sensor disposed in the tool body, and a wireless communication unit for transmitting the output of the sensor. The machine tool includes: a cover having a window portion defining the machining space; and a shielding member mounted on the window portion. The shielding member includes: a shielding body for shielding radio waves radiated into the machining space; and a communication antenna for communicating with the wireless communication unit.

[0042] (9) Another embodiment, viewed from another perspective, is a shielding member, which is a shielding member of a machine tool installed on the window of a cover that defines a machining space. The machine tool uses a cutting tool and is equipped with a power supply device that wirelessly supplies power to the cutting tool. The cutting tool has a tool body disposed in the machining space, a sensor disposed in the tool body, and a wireless communication unit that transmits the output of the sensor. The shielding member includes: a shielding body that shields radio waves radiated into the machining space; and a communication antenna for communicating with the wireless communication unit.

[0043] [Details of the implementation method] Hereinafter, preferred embodiments will be described with reference to the accompanying drawings.

[0044] In addition, at least a portion of the embodiments described below may be combined arbitrarily.

[0045] [Regarding the overall composition] Figure 1 This is a diagram showing the overall configuration of the cutting system involved in the implementation method. Figure 1 In the process, the cutting system 1 includes a machine tool 2, a cutting tool 4, a power supply device 6, and an external device 7.

[0046] Machine tool 2 is, for example, an NC milling machine. Machine tool 2 has a column 8 and a spindle 10. The column 8 supports the spindle 10 above the worktable (not shown). The spindle 10 holds the cutting tool 4 by means of a chuck or the like. The spindle 10 is rotated about a rotation axis in the vertical direction by a motor.

[0047] Machine tool 2 drives cutting tool 4 to rotate by rotating spindle 10. A cutting insert is fixed to the lower end of cutting tool 4. The workpiece fixed to the worktable is positioned in the machining position by moving the worktable, and cutting is performed by cutting tool 4.

[0048] The cutting process is performed within the machining space S of the machine tool 2. The cutting tool 4, column 8, spindle 10, worktable, etc. are arranged within the machining space S.

[0049] The machining space S is defined by a cover 12 made of metal, resin, or the like. That is, the machining space S is a space enclosed by the cover 12. During cutting, cutting oil (coolant) is supplied. To prevent the cutting oil from scattering, the cutting process is carried out within the enclosed machining space S.

[0050] Cutting tool 4 is a tool used for cutting a workpiece. More specifically, cutting tool 4 is a tool used for milling, a cutting process. Milling is a machining process in which a tool is rotated and pressed relative to a fixed workpiece.

[0051] The cutting tool 4 has a rotating shaft 14 and a housing 15.

[0052] The rotating shaft 14 is a component held and rotated by the spindle 10. The upper end of the rotating shaft 14 is held by the spindle 10. A cutting blade is provided at the lower end of the rotating shaft 14. That is, the rotating shaft 14 is the tool body in the cutting tool 4.

[0053] The housing 15 is an annular component, integrally fixed to the rotating shaft 14. A sensor is housed inside the housing 15. The sensor has the function of detecting the state of the cutting tool 4. The housing 15 also houses circuitry for transmitting output information representing the sensor's output to the outside, and circuitry for receiving power wirelessly from an external source. The configuration of the cutting tool 4 will be described in detail later.

[0054] The power supply device 6 has the function of wirelessly powering the cutting tool 4 within the machining space S. The power supply device 6 includes a power transmission antenna 6a and a power transmission unit 6b. The power transmission unit 6b generates a power supply signal based on the power supplied from the power source 100 and provides it to the power transmission antenna 6a. The power transmission antenna 6a is fixed at a position capable of wirelessly powering the cutting tool 4 within the machining space S. The power transmission antenna 6a transmits the power supply signal as a power supply radio wave to the cutting tool 4.

[0055] The power supplied from the power supply unit 6 to the cutting tool 4 is used as the power for the operation of the sensors of the cutting tool 4 and for sending output information.

[0056] The power supply device 6 of this embodiment generates and transmits a signal containing a frequency band of 5.7 GHz. That is, it radiates radio waves containing a frequency band of 5.7 GHz from the power transmission antenna 6a.

[0057] Furthermore, the frequency band of the radio waves emitted by the power supply device 6 is not particularly limited; for example, it can be other frequency bands permitted by law, such as the 2.4 GHz band.

[0058] External device 7 is a device located outside the machining space S of machine tool 2. Output information sent by cutting tool 4 is provided to external device 7.

[0059] External device 7 is composed of a computer or the like. External device 7 includes a processing unit, a storage unit, an input / output unit, etc.

[0060] External device 7 has the function of performing processing related to the output information. External device 7 extracts information representing the sensor's detection result from the output information and stores it in the storage unit, or outputs the detection result to the outside via the input / output unit.

[0061] A window 16 is provided in the cover 12. A shielding member 30 is installed in the window 16.

[0062] The shielding member 30 has the function of shielding electromagnetic waves radiated into the machining space S. The shielding member 30 is equipped with a communication device 32 for wireless communication with the cutting tool 4. The communication device 32 is connected to an external device 7 and can send and receive information to each other.

[0063] The external device 7 can obtain output information from the cutting tool 4 via the communication device 32, or provide necessary information to the cutting tool 4.

[0064] [Regarding cutting tools] Figure 2 This is a block diagram showing an example of the configuration of cutting tool 4.

[0065] like Figure 2 As shown, in addition to the aforementioned rotating shaft 14 and housing 15, the cutting tool 4 also includes a sensor 20, a wireless communication unit 22, a charging control unit 24, a power storage unit 26, and a rectifier antenna 28. The sensor 20, wireless communication unit 22, charging control unit 24, power storage unit 26, and rectifier antenna 28 are housed inside the housing 15. The sensor 20, wireless communication unit 22, charging control unit 24, power storage unit 26, and rectifier antenna 28 are either directly mounted on the rotating shaft 14 or mounted on the rotating shaft 14 via the housing 15.

[0066] The rectifier antenna 28 receives power from the power supply antenna 6a of the power supply device 6.

[0067] The rectifier antenna 28 includes a receiving antenna 28a and a rectifier circuit 28b. The receiving antenna 28a receives electromagnetic waves for power supply from the power supply device 6. The receiving antenna 28a provides an electrical signal based on the received electromagnetic waves to the rectifier circuit 28b. The rectifier circuit 28b rectifies the electrical signal provided from the receiving antenna 28a, converts it into DC power, and outputs it.

[0068] That is, the rectifier antenna 28 constitutes a receiving antenna circuit having a receiving antenna 30a that receives the power transmitted from the transmitting antenna 6a.

[0069] The DC power output by the rectifier circuit 28b is provided to the charging control unit 24.

[0070] The charging control unit 24 has the following functions: converting the DC power supplied from the rectifier antenna 28 into a predetermined voltage, or controlling the charging and discharging of the battery storage unit 26, or providing the DC power from the rectifier antenna 28 and the DC power from the battery storage unit 26 to the four sensors 20 and the wireless communication unit 22.

[0071] Alternatively, if DC power is supplied from the rectifier antenna 28, the charging control unit 24 can also supply DC power only to the energy storage unit 26. In this case, DC power is supplied from the energy storage unit 26 to the sensor 20 and the wireless communication unit 22.

[0072] Furthermore, in the absence of DC power supplied from the rectifier antenna 28, the charging control unit 24 can supply the DC power stored in the energy storage unit 26 to the four sensors 20 and the wireless communication unit 22.

[0073] The energy storage unit 26 includes, for example, a battery and a capacitor. The energy storage unit 26 stores DC power supplied by the charging control unit 24. In addition, the energy storage unit 26 discharges the stored power under the control of the charging control unit 24.

[0074] Sensor 20 is used to detect the state of the rotating shaft 14. More specifically, sensor 20 includes a strain sensor, a temperature sensor, an acceleration sensor, etc. Sensor 20 has the function of detecting the state of the rotating shaft 14, namely strain, temperature, and acceleration (vibration). When DC power is supplied from the charging control unit 24, sensor 20 provides an output to the wireless communication unit 22 indicating the result obtained from detecting the state of the rotating shaft 14.

[0075] A communication antenna 23 is provided in the wireless communication unit 22. The wireless communication unit 22 has the function of wirelessly communicating with the communication device 32 through the communication antenna 23.

[0076] The wireless communication unit 22 communicates wirelessly with the communication device 32, for example, via Bluetooth (Bluetooth: registered trademark). Therefore, the wireless communication unit 22 uses a frequency band including 2.4 GHz for wireless communication.

[0077] The wireless communication unit 22 wirelessly transmits the output provided by the sensor 20 as output information. When DC power is supplied from the charging control unit 24, the wireless communication unit 22 establishes a communication connection with the external device 7 and begins wireless transmission of output information.

[0078] When performing cutting using the aforementioned cutting system 1, firstly, the operator of system 1 mounts the cutting tool 4 onto the spindle 10. Next, the operator mounts the workpiece onto the worktable of the machine tool 2. Then, the operator closes the machining space S by closing the cover of the machine tool 2.

[0079] Next, the operator begins to wirelessly power the cutting tool 4 from the power supply unit 6.

[0080] Thus, the cutting tool 4 receives power from the power supply unit 6. With power from the power supply unit 6, the four sensors 20 of the cutting tool 4 begin detecting the state of the rotating shaft 14 and outputting the detection results. Furthermore, the wireless communication unit 22 establishes a communication connection with the communication device 32 and begins wirelessly transmitting information.

[0081] Afterwards, the operator activated machine tool 2 to begin cutting.

[0082] At this time, the sensor 20 of the cutting tool 4 provides an output indicating the result of detecting the state of the cutting tool 4 to the wireless communication unit 22. The wireless communication unit 22 then wirelessly transmits the output provided by the sensor 20 as output information.

[0083] The output information sent by the wireless communication unit 22 is received by the communication device 32 and provided to the external device 7.

[0084] The external device 7, which is provided with output information, acquires information indicating the state of the rotary axis 14 from the output information. The external device 7 outputs information indicating the acquired state of the rotary axis 14. Thus, the external device 7 can output the machining state (state of the cutting tool 4) during cutting to the operator. The operator can monitor the machining state during cutting through the output of the external device 7.

[0085] [Regarding the shielding member of the first embodiment] As described above, the cutting system 1 of this embodiment has a shielding member 30.

[0086] Figure 3 This is a diagram showing an example of the appearance of the cover 12 of the machine tool 2, which is equipped with the shielding member 30.

[0087] The cover 12 has a cover body 12a and an opening and closing door 12b.

[0088] The main body 12a houses the column 8, the spindle 10, and the cutting tool 4. The opening and closing door 12b is as follows: Figure 3 As shown by the arrow in the image, it is positioned on the cover body 12a in a manner that allows it to slide laterally.

[0089] Opening and closing door 12b Figure 3 The position shown is in the closed state. The door 12b moves laterally (to the left of the paper in the illustration) from the closed position to the open state.

[0090] With the door 12b in the open position, all elements arranged in the processing space S are exposed to the outside. The door 12b is in the open position when the operator is preparing for processing or taking out the processed workpiece.

[0091] When the opening / closing door 12b is closed, the machining space S is sealed off. Therefore, the operator of machine tool 2 cannot enter the machining space S. When machine tool 2 is in the machining process, the opening / closing door 12b is closed.

[0092] A window 16 is provided on the door 12b. The window 16 is an observation window for monitoring the interior of the processing space S from the outside of the enclosure 12.

[0093] Figure 4 This is an enlarged view of window 16. Figure 5 yes Figure 4 Sectional view along line AA in the middle.

[0094] The window portion 16 has a window opening 16a and a window panel 16b. The window opening 16a is provided in the door 12b. The window opening 16a is a rectangular opening that passes through the inner and outer surfaces of the door 12b.

[0095] Window panel 16b is, for example, a transparent sheet material comprising a glass panel or an acrylic panel. Window panel 16b is embedded in and fixed to the edge surface 16a1 of window opening 16a.

[0096] As described above, the shielding member 30 is installed on the window portion 16.

[0097] In addition to the aforementioned communication device 32, the shielding component 30 also includes a shielding body 34 and a housing 36.

[0098] The shielding body 34 may be, for example, a transparent mesh coated with a conductive metal, or a resin sheet containing the mesh. In this case, the shielding body 34 is transparent and shields radio waves with a relatively wide frequency band. The shielding body 34 of this embodiment shields the power supply radio waves emitted by the power supply device 6, as well as the radio waves used in wireless communication between the wireless communication unit 22 and the communication device 32.

[0099] Furthermore, as described above, the shield 34 is transparent, so the operator can monitor the processing space S through the shield 30 and the window 16.

[0100] A sheet-like shielding body 34 is stacked on the outer surface 16b1 of the window panel 16b.

[0101] The shielding body 34 has an opposing surface 34a, a facing surface 34b, and an opening 34c. The opposing surface 34a is the surface opposite to the outer surface 16b1 of the window portion 16. Therefore, when the shielding member 30 is installed in the window portion 16, the opposing surface 34a faces the processing space S. The facing surface 34b is the surface of the shielding body 34 that is opposite to the opposing surface 34a.

[0102] The opening 34c is the portion that passes between the opposing surface 34a and the opposite surface 34b.

[0103] In addition, Figure 5 In order to make it easier to understand, the thickness of each part, such as the shield 34, is exaggerated.

[0104] The housing 36 is formed of a material capable of shielding radio waves, sealing the opening 34c. The material capable of shielding radio waves includes conductive metals such as steel plates and copper plates. By sealing the opening 34c, the housing 36 suppresses the leakage of radio waves from the processing space S to the outside through the opening 34c.

[0105] like Figure 5 As shown, the housing 36 has a rectangular section 36a and a cover section 36b. The outer surface of the rectangular section 36a has a rectangular shape corresponding to the shape of the opening 34c. Therefore, the outer surface of the rectangular section 36a contacts the edge surface 34c1 of the opening 34c. The first end 36a1 of the rectangular section 36a contacts the outer surface 16b1 of the window panel 16b. The second end 36a2 of the rectangular section 36a is blocked by the cover section 36b.

[0106] The housing 36 can also be held and fixed to the shield 34 by the edge surface 34c1 through the insertion of the opening 34c. Alternatively, the housing 36 can also be fixed to the window panel 16b via an adhesive layer or the like.

[0107] The communication device 32 is disposed in the space between the housing 36 and the outer surface 16b1.

[0108] The communication device 32 includes a communication antenna 32a and a communication circuit 32b.

[0109] The communication circuit 32b is wired to the external device 7. The external device 7 transmits and receives signals with the communication circuit 32b.

[0110] The communication antenna 32a radiates the transmitted signal provided by the communication circuit 32b and receives the surrounding signals, and provides the received signal to the communication circuit 32b.

[0111] In this way, the external device 7 can communicate wirelessly via the communication device 32.

[0112] The housing 36 also includes a retaining member 38. The retaining member 38 is a member for retaining the communication device 32 inside the housing 36. The retaining member 38 is a member that protrudes from the inner surface of the housing 36.

[0113] The communication device 32 is fixed to the retaining member 38 by screws, adhesive layers, etc. Thus, the communication device 32 is held in the space provided between the housing 36 and the outer surface 16b1.

[0114] Based on the above configuration, a shielding member 30 is installed on the window 16 to shield radio waves, thus suppressing the leakage of radio waves from the window 16. Furthermore, the shielding member 30 is equipped with a communication antenna 32a (communication device 32) for communicating with the wireless communication unit 22, enabling the transmission and reception of radio waves between the communication antenna 32a and the wireless communication unit 22 within the machining space S. As a result, while suppressing the leakage of radio waves from the window 16 to the outside of the machining space S, the output of the sensor 20 can be acquired via an external device 7 located outside the machine tool 2.

[0115] More specifically, in this embodiment, the shield 34 has an opening 34c, and the housing 36 that seals the opening 34c has a retaining member 38 that holds the communication device 32 between itself and the outer surface 16b1 of the window 16.

[0116] Therefore, the outer surface 16b1 of the window 16 is exposed at the opening 34c. The communication antenna 32a is held between the housing 36 and the exposed portion of the outer surface 16b1 by the retaining member 38. Therefore, the communication antenna 32a is positioned opposite the outer surface 16b1 without passing through the shield 34. Therefore, the radio waves transmitted and received between the communication antenna 32a and the wireless communication unit 22 are not shielded by the shield 34. Therefore, the received signal based on the communication antenna 32a (communication device 32) can be retrieved externally via a wired connection, and the output of the sensor 20 can be obtained outside the machine tool 2.

[0117] In addition, the housing that seals the opening 34c is made of a material that can shield radio waves, thus preventing radio waves from leaking from the opening 34c.

[0118] [Regarding variations of the first embodiment] Figure 6 This is a cross-sectional view of the shielding member 30 according to the first variation of the first embodiment.

[0119] The shielding member 30 in this modified example differs from the above embodiment in that it has a base plate member 40 on the window plate 16b side.

[0120] The substrate member 40 is, for example, a transparent sheet material comprising a glass plate or an acrylic plate. A shielding body 34 is laminated on the substrate member 40. The substrate member 40 has a lamination surface 40b and an opposing surface 40a. The lamination surface 40b is the surface on which the shielding body 34 is laminated. The lamination surface 40b abuts against the opposing surface 34a of the shielding body 34.

[0121] The opposing surface 40a is the side opposite to the laminated surface 40b in the substrate member 40. The opposing surface 40a is laminated on the window panel 16b. Therefore, when the shielding member 30 is installed in the window portion 16, the opposing surface 40a faces the processing space S side.

[0122] In this way, the shielding member 30 is stacked sequentially with the base plate member 40 and the shielding body 34 from the window plate 16b side.

[0123] The substrate component 40 can be stacked on the window panel 16b and fixed to the window panel 16b, or it can be embedded and fixed to the edge surface 16a1.

[0124] Alternatively, the housing 36 can also be fixed to the substrate member 40 via an adhesive layer or the like.

[0125] In this modified example, the shielding member 30 also includes a substrate member 40, so even if the shielding body 34 is sheet-like, the shielding body 34 can be held by the substrate member 40, making the handling of the shielding member 30 easier.

[0126] Figure 7 This is a cross-sectional view of the shielding member 30 involved in the second variation of the first embodiment.

[0127] The shielding member 30 in this modified example differs from the first modified example in that it is stacked sequentially with the shielding body 34 and the base plate member 40 from the window panel 16b side.

[0128] In this modified example, the laminated surface 40b abuts against the opposing surface 34b of the shielding body 34. Therefore, with the shielding member 30 installed in the window portion 16, the laminated surface 40b faces the processing space S side.

[0129] An opening 40c is provided in the substrate member 40. The opening 40c is the portion that passes through the space between the laminated surface 40b and the opposing surface 40a. The opening 40c is formed to match the shape of the opening 34c of the shield 34. Therefore, the opening 34c and the opening 40c pass through the space between the opposing surface 34a and the opposing surface 40a.

[0130] The square cylindrical portion 36a of the housing 36 is inserted into the opening portion 34c and the opening portion 40c. The housing 36 is fixed to the base plate member 40 by being inserted into the opening portion 40c.

[0131] In this case, the processing of the shielding member 30 also becomes easier via the substrate member 40. Furthermore, in this modified example, since the housing 36 is inserted into the substrate member 40, the fixing of the housing 36 becomes easier.

[0132] Figure 8 This is a cross-sectional view of the shielding member 30 involved in the third variation of the first embodiment.

[0133] The shielding member 30 in this modified example has a communication antenna 32a, but it differs from the first embodiment in that it does not have a communication circuit.

[0134] In this case, the communication circuit is located outside the housing 36, and the communication circuit is connected to the communication antenna 32a via a wire. Alternatively, the communication antenna 32a can be directly connected to the external device 7 via a wire, enabling the external device 7 to function as a communication circuit.

[0135] Furthermore, in this embodiment and its variations, a transparent mesh coated with a conductive metal is shown as an example of using the shield 34. However, as the shield 34, a radio wave absorber with a frequency selective function that absorbs radio waves of a predetermined frequency band can also be used. The radio wave absorber is a sheet-like component comprising a transparent dielectric sheet and a plurality of predetermined conductor patterns arranged on the surface of the dielectric sheet. The frequency band of the radio waves absorbed by the radio wave absorber is determined by the shape of the plurality of conductor patterns, etc.

[0136] When the frequency band of the electromagnetic waves absorbed by the shield 34 (the predetermined frequency band) includes the frequency band of the electromagnetic waves emitted by the power supply device 6 (including the predetermined frequency band of 5.7 GHz), the electromagnetic waves based on the power supply device 6 are absorbed by the shield, suppressing leakage to the outside of the processing space S.

[0137] On the other hand, since the frequency band of the radio waves from the wireless communication unit 22 is outside the predetermined frequency band, radio wave transmission and reception can be performed between the communication antenna 32a and the wireless communication unit 22. As a result, the output of the sensor 20 can be obtained through the external device 7 while suppressing the leakage of radio waves from the power supply device 6 to the processing space S.

[0138] Furthermore, if the shielding body 34 uses a radio wave absorber with frequency selection function, it is not necessary to provide an opening 34c in the shielding body 34, and the communication device 32 can be provided on the opposite side 34b of the shielding body 34.

[0139] [Regarding the shielding member of the second embodiment] Figure 9 This is an enlarged view of the window 16 according to the second embodiment. Figure 10 yes Figure 9 BB line sectional view in the middle.

[0140] In this embodiment, the shield 34 differs from the first embodiment in that it is formed of a conductive metal plate.

[0141] In this embodiment, the shielding body 34 has a rectangular shape larger than the window opening 16a of the window portion 16. Therefore, the shielding body 34 is fixed in a state where the edge of the shielding body 34 abuts against the edge of the window opening 16a in the outer surface 12b1 of the door 12b. Thus, the shielding body 34 completely seals off the window opening 16a.

[0142] Furthermore, the outer surface 16b1 of the window panel 16b is separated from the opposing surface 34a of the shield 34. That is, a small space is provided between the outer surface 16b1 and the opposing surface 34a.

[0143] As described above, the shielding body 34 is formed of a conductive metal plate such as a steel plate or a copper plate. Therefore, the shielding body 34 of this embodiment is not transparent.

[0144] Therefore, a monitoring window 34d is provided in the shielding body 34. In addition, the shielding member 30 also has an opening and closing door 42.

[0145] The monitoring window 34d is a rectangular opening. The monitoring window 34d extends between the opposing surface 34a and the opposite surface 34b.

[0146] The opening / closing door 42, like the shielding body 34, is formed of a conductive metal plate such as steel or copper. The opening / closing door 42 has a rectangular shape larger than the monitoring window 34d. The opening / closing door 42 is mounted on the shielding body 34 via a hinge 44. The opening / closing door 42 is mounted on the shielding body 34 in a manner that completely blocks the monitoring window 34d. The opening / closing door 42 can be opened and closed via the hinge 44. The operator can hold the handle 45 to open and close the opening / closing door 42.

[0147] like Figure 9 as well as Figure 10 As shown, when the door 42 is closed, the edge of the door 42 abuts against the edge of the monitoring window 34d of the shield 34.

[0148] By opening the door 42, the operator can enter the window 16 through the monitoring window 34d.

[0149] Thus, in this embodiment, the shield 34 is formed of a conductive metal plate and has a monitoring window 34d, and the shielding member 30 also has an opening and closing door 42 that blocks the monitoring window 34d.

[0150] The shield 34, made of conductive metal plate, is not transparent. However, the shield 34 has a monitoring window 34d that can be opened and closed through the opening and closing door 42, so the operator can monitor the processing space S as needed through the monitoring window 34d and the window 16.

[0151] In addition, in this embodiment, such as Figure 9 As shown, a proximity switch 46 is provided at the edge of the monitoring window 34d of the shielding body 34. The proximity switch 46 is connected to the power supply section 6b of the power supply device 6. Figure 1 The proximity switch 46 provides an output corresponding to the opening and closing state of the door 42 to the power supply unit 6b.

[0152] When the power supply unit 6b provides a power supply signal to the power supply antenna 6a, if the proximity switch 46 provides an output indicating that the opening / closing door 42 has been closed, the power supply unit 6b continues to provide a power supply signal to the power supply antenna 6a.

[0153] On the other hand, when the power supply unit 6b provides a power supply signal to the power supply antenna 6a, if the proximity switch 46 provides an output indicating that the door 42 has been opened, the power supply unit 6b stops generating the power supply signal or reduces the power of the signal compared to normal.

[0154] Therefore, even if the operator opens the door 42 while the power is on, the leakage of radio waves from the monitoring window 34d can be suppressed.

[0155] [Regarding the shielding member of the third embodiment] Figure 11 This is an enlarged view of the window 16 according to the third embodiment. Figure 12 yes Figure 11 The CC line sectional view in the middle.

[0156] In this embodiment, the difference from the second embodiment is that no monitoring window 34d is provided on the shield 34, and the shield member 30 has a camera part 50 for taking pictures of the processing space S.

[0157] In addition to the imaging unit 50 described above, the shielding member 30 of this embodiment also includes an output unit 52 that outputs the image captured by the imaging unit 50.

[0158] The imaging unit 50 includes, for example, a digital camera with imaging elements such as CCD elements and CMOS elements, as well as optical mechanisms such as lenses.

[0159] The imaging unit 50 is fixed to the opposing surface 34a of the shield 34. Therefore, the imaging unit 50 is accommodated in the space between the opposing surface 34a and the outer surface 16b1. The imaging unit 50 is fixed in a position opposite to the window 16, and can take pictures of the processing space S through the window 16.

[0160] The imaging unit 50 is connected to the output unit 52. The imaging unit 50 provides the data of the captured moving images to the output unit 52.

[0161] The output unit 52 is a device such as a monitor or touch panel that has a screen 52a for outputting moving images. When moving image data is provided from the capturing unit 50, the output unit 52 outputs the provided moving image data as a moving image to the screen 52a.

[0162] In this embodiment, the shield 34 made of conductive metal plate is not transparent. However, the processing space S can be monitored from the outside through the imaging unit 50 and the output unit 52.

[0163] Furthermore, in this embodiment, the communication device 32 (communication antenna 32a) is fixed together with the imaging unit 50 to the opposing surface 34a. Therefore, the communication device 32 is accommodated in the space between the opposing surface 34a and the outer surface 16b1. The communication device 32 is connected to the external device 7 via a wire.

[0164] In this case, the shield 34 will not be located between the communication device 32 (communication antenna 32a) and the outer surface 16b1 of the window 16. Therefore, it is possible to suppress the connection between the communication device 32 and the wireless communication unit 22. Figure 2 The situation where radio waves transmitted and received between two points are blocked by a shielding body.

[0165] 〔other〕 Furthermore, the embodiments disclosed herein should be considered exemplary rather than restrictive in all respects.

[0166] In the above embodiments, the example shown is that the cutting tool 4 is a tool for milling, but the cutting tool 4 can also be a tool for turning. Furthermore, turning refers to machining performed by pressing a tool against a rotating workpiece.

[0167] The scope of this invention is not defined by the foregoing, but by the claims, and is intended to include all modifications that are equivalent to and within the scope of the claims.

[0168] Explanation of reference numerals in the attached figures 1: Cutting and machining system; 2: Machine tools; 4: Cutting tools; 6: Power supply device; 6a: Power transmission antenna; 6b: Power transmission department; 7: External devices; 8: Columns; 10: Spindle; 12: Cover; 12a: Main body of the cover; 12b: Opening and closing doors; 12b1: Outer surface; 14: Rotation axis; 15: Shell; 16: Window area; 16a: Window opening; 16a1: Edge surface; 16b: Window panel; 16b1: Outer surface; 20: Sensors; 22: Wireless Communications Department; 23: Communication antenna; 24: Charging control unit; 26: Battery Storage Unit; 28: Rectifier antenna; 28a: Receiving antenna; 28b: Rectifier circuit; 30: Shielding components; 30a: Receiving antenna; 32: Communication device; 32a: Communication antenna; 32b: Communication circuit; 34: Shielding body; 34a: Opposite surface; 34b: Opposite face; 34c: Opening; 34c1: Edge face; 34d: Monitor window; 36: Shell; 36a: Square tube section; 36a1: First end; 36a2: Second end; 36b: Cover; 38: Retaining components; 40: Substrate components; 40a: Opposite face; 40b: Layered surface; 40c: Opening; 42: Opening and closing doors; 44: Hinge section; 45: Handle; 46: Proximity switch; 50: Filming Department; 52: Output section; 52a: picture; 100: Power supply; S: Processing space.

Claims

1. A cutting process system, wherein, The cutting system includes: A cutting tool having a tool body disposed in the machining space of a machine tool, a sensor disposed in the tool body, and a wireless communication unit for transmitting the output of the sensor; A power supply device that wirelessly powers the cutting tools in the machining space; and A shielding component is installed at the window portion of the enclosure that defines the processing space. The shielding component includes: The shielding body will shield the electromagnetic waves radiated into the processing space; and A communication antenna for communicating with the wireless communication unit.

2. The cutting system according to claim 1, wherein, The shielding body has: Opposing surface, opposite to the outer surface of the window; and The opening extends through the space between the opposing surfaces and their opposite faces. The shielding member also includes a shell made of raw materials capable of shielding the radio waves that seals the opening. The housing has a retaining member that holds the communication antenna between the housing and the outer surface of the window.

3. The cutting system of claim 2, wherein, The shielding member further comprises a substrate member having a stacked surface on which the shielding body is stacked.

4. The cutting system according to claim 1, wherein, The shielding body has an opposing surface that is configured to face the outer surface of the window. The communication antenna is disposed between the outer surface of the window and the opposing surface.

5. The cutting system according to any one of claims 1 to 4, wherein, The shielding body includes an electromagnetic wave absorber that absorbs electromagnetic waves in a predetermined frequency band. The predetermined frequency band includes the frequency band of the radio waves emitted by the power supply device.

6. The cutting system according to any one of claims 1 to 4, wherein, The shield is formed of a conductive metal plate and has a monitoring window that extends between the opposing surfaces. The shielding component also has an opening and closing door for sealing the monitoring window.

7. The cutting system according to any one of claims 1 to 4, wherein, The shield is formed of a conductor metal plate. The shielding component also includes: The camera unit takes pictures of the processing space; and The output unit outputs the image captured by the imaging unit.

8. A machine tool that uses a cutting tool and is provided with a power supply device for wirelessly supplying power to the cutting tool, the cutting tool having a tool body disposed in a machining space, a sensor disposed in the tool body, and a wireless communication unit for transmitting the output of the sensor, wherein... The machine tool includes: A cover, having a window portion, defines the processing space; and A shielding component is installed on the window. The shielding component includes: The shielding body will shield the electromagnetic waves radiated into the processing space; and A communication antenna for communicating with the wireless communication unit.

9. A shielding member, wherein the shielding member is a shielding member of a machine tool installed on a window portion of a cover defining a machining space, the machine tool using a cutting tool and provided with a power supply device for wirelessly powering the cutting tool, the cutting tool having a tool body disposed in the machining space, a sensor disposed in the tool body, and a wireless communication unit for transmitting the output of the sensor, wherein, The shielding component includes: The shielding body will shield the electromagnetic waves radiated into the processing space; and A communication antenna for communicating with the wireless communication unit.

Images