Numerical control apparatus

Abstract

A numerical control apparatus according to the present disclosure comprises: a numerical control apparatus body; and a display device attached to the numerical control apparatus body. The numerical control apparatus also comprises a plurality of wireless transceivers including a first wireless transceiver provided to the numerical control apparatus body and a second wireless transceiver provided to the display device. The second wireless transceiver is capable of communicating with the first wireless transceiver by being positioned within a communicable range of the first wireless transceiver.

Description

Numerical Control Device

[0001] The present disclosure relates to a numerical control device.

[0002] Japanese Patent Application Laid-Open Publication No. 2019-82908 discloses a numerical control device with a display. According to the disclosure, the numerical control device with a display includes a numerical control device main body and a display detachable from the numerical control device main body. Also, according to the disclosure, the numerical control device main body with a display can be applied to a numerical control device.

[0003] There is a demand for a numerical control device that is more reliable.

[0004] The present invention aims to solve the above-mentioned problems.

[0005] One aspect of the present disclosure is a numerical control device comprising a numerical control device main body and a display device attached to the numerical control device main body, and comprising a plurality of wireless transceivers including a first wireless transceiver provided on the numerical control device main body and a second wireless transceiver provided on the display device, wherein the second wireless transceiver is located within the communication range of the first wireless transceiver and is therefore capable of communicating with the first wireless transceiver.

[0006] FIG. 1 is a rear perspective view of a numerical control device according to one embodiment. FIG. 2 is an exploded perspective view of the numerical control device shown in FIG. 1. FIG. 3 is an exploded perspective view of the display device shown in FIG. 2. FIG. 4 is a front perspective view of the numerical control device main body. FIG. 5 is another exploded perspective view of the display device. FIG. 6 is another exploded perspective view of the numerical control device. FIG. 7 is a perspective view showing a part of the display device according to Modification 1. FIG. 8 is a perspective view of the numerical control device main body according to Modification 2. FIG. 9 is a plan view including the first wireless transceiver shown in FIG. 8. FIG. 10 is a perspective view showing a part of the display device according to Modification 2. FIG. 11 is a rear perspective view of the display device according to Modification 3.

[0007] A display device according to the prior art includes a connector (see also JP 2019-82908 A). The connector is electrically connected to a numerical control device main body. The numerical control device main body supplies power to the display device via the connector. The numerical control device main body also supplies a control signal to the display device via the connector. The control signal is a signal (electrical signal) for controlling the display device.

[0008] However, vibrations may be applied to the connector electrically connecting the numerical control device main body and the display device. For example, a numerical control device including a numerical control device main body and a display device is installed in a machine tool. The machine tool generates vibrations when it operates. The vibrations are transmitted to the numerical control device main body and the display device to which the numerical control device main body is attached. As a result, a force (shock) caused by the vibrations is applied to the connector electrically connecting the numerical control device main body and the display device. Therefore, numerical control devices according to the prior art required a structure to protect the connector from vibration and shock.

[0009] Furthermore, in order to fit the connector to the main body of the numerical controller, the user of the numerical controller had to use a relatively large force to push the connector into the numerical controller.When removing the display device from the main body of the numerical controller, the user also had to use a relatively large force to release the fit between the connector and the main body of the numerical controller.

[0010] Based on the above preliminary explanation, one embodiment will be described below.

[0011] [One embodiment] The X direction (left-right direction) used in the following description is a direction parallel to a horizontal plane. The X direction includes the X1 direction, which is the right direction when viewing a display device 14 (described later) from the front, and the X2 direction, which is the left direction. The Y direction (vertical direction) used in the following description is a direction perpendicular to the horizontal plane. The Y direction includes the Y1 direction, which is the upward direction, and the Y2 direction, which is the downward direction (direction of gravity). The Z direction (front-back direction) used in the following description is a direction parallel to the horizontal plane and perpendicular to the X direction. The Z direction includes the Z1 direction, which is the forward direction, and the Z2 direction, which is the backward direction.

[0012] Fig. 1 is a rear perspective view of a numerical control device 10 according to an embodiment. Fig. 2 is an exploded perspective view of the numerical control device 10 shown in Fig. 1. Fig. 3 is an exploded perspective view of the display device 14 shown in Fig. 2.

[0013] The numerical control device 10 is provided in a machine tool (not shown). The machine tool is, for example, but not limited to, a machining center. As shown in Figures 1 and 2, the numerical control device 10 includes a numerical control device main body 12 and a display device 14.

[0014] 2, the numerical control device main body 12 includes a housing 16 and a plurality of control boards 18 (181, 182). The housing 16 is made of, for example, resin (plastic). The housing 16 houses the plurality of control boards 18.

[0015] The multiple control boards 18 include a backboard 181. The control boards 182 other than the backboard 181 are connected to the backboard 181. As a result, the multiple control boards 182 can be interconnected via the backboard 181. A control circuit (not shown) is mounted on the multiple control boards 18. The control circuit includes an electric circuit (electronic circuit) for controlling a machine tool (not shown). In other words, the control circuit includes electric circuits for controlling a spindle, a table, etc. provided in the machine tool (not shown). The control circuit also generates a control signal (display control signal) for controlling the display device 14.

[0016] The display device 14 is a separate device from the numerical control device main body 12 (housing 16). The display device 14 can be attached to and detached from the housing 16 by, for example, a pair of snap fits 20 (38, 40). The display device 14 has a front portion 14a, a back portion 14b, and a display circuit board 22.

[0017] The front part 14a is provided with a display screen (not shown). The display screen is, for example, a liquid crystal display (LCD), but is not limited to this. The front part 14a may also be provided with a touch panel (not shown). The touch panel can be used by an operator to input instructions to the machine tool.

[0018] The back portion 14b includes a back plate 24. The back plate 24 is detachable from the display device 14. The material of the back plate 24 is, for example, metal, but is not limited to this.

[0019] Furthermore, a communication opening 26 and a power receiving opening 28 are formed in the back portion 14b (rear panel 24) (FIGS. 2 and 3). As shown in FIG. 3, a plurality of communication openings 26 (26A, 26B) may be formed in the back portion 14b. A plurality of power receiving openings 28 (28A, 28B) may be formed in the rear panel 24. The communication opening 26 and the power receiving opening 28 will be described in more detail below.

[0020] The display circuit board 22 is housed between the front part 14a and the back part 14b (rear panel 24). A display circuit 22c is mounted on the display circuit board 22. The display circuit 22c is a circuit that executes processing based on control signals received from the numerical control device main body 12. For example, this processing is processing for displaying information on the front part 14a (display screen). The portion of the display circuit 22c that is located in the power receiving opening 28 is shown in Figures 2 and 3.

[0021] As shown in FIGS. 2 and 3 , the numerical control device 10 further includes multiple wireless transceivers 30 (301, 302, 303). Each of the multiple wireless transceivers 30 is a communication module capable of wireless communication. The wireless communication performed by the wireless transceiver 30 is, for example, point-to-point short-range wireless communication. Each of the multiple wireless transceivers 30 has one or more antennas 32. In this embodiment, a case will be described in which the wireless transceiver 30 has two antennas 32. Note that the two antennas 32 include, for example, an antenna 32 for signal transmission and an antenna 32 for signal reception. The two antennas 32 may be provided on separate chips, but this is not a limitation. Alternatively, a single antenna 32 may have both the functions of the signal transmission antenna 32 and the signal reception antenna 32.

[0022] As shown in FIGS. 2 and 3, the plurality of wireless transceivers 30 include a first wireless transceiver 301, a second wireless transceiver 302, and a third wireless transceiver 303.

[0023] The first wireless transceiver 301 is provided in the numerical control device main body 12. The first wireless transceiver 301 transmits (transmits) a control signal generated by the numerical control device main body 12. The first wireless transceiver 301 may be housed in the housing 16. The first wireless transceiver 301 may also be mounted on one of the plurality of control boards 18. The control board 18 on which the first wireless transceiver 301 is mounted is, for example, the backboard 181, but is not limited to this.

[0024] The second wireless transceiver 302 and the third wireless transceiver 303 are provided in the display device 14. For example, the second wireless transceiver 302 and the third wireless transceiver 303 are provided on the display circuit board 22. Each of the second wireless transceiver 302 and the third wireless transceiver 303 can receive a control signal by being located within the communication range of the first wireless transceiver 301. A control signal received by at least one of the second wireless transceiver 302 and the third wireless transceiver 303 is supplied to the display circuit 22c. The second wireless transceiver 302 or the third wireless transceiver 303 may transmit a signal (output signal) to the first wireless transceiver 301 as necessary. The output signal transmitted from the display device 14 via the second wireless transceiver 302 or the third wireless transceiver 303 includes a signal indicating a user operation, for example, in response to an operation on the touch panel described above. The display device 14 may also be provided with an external memory port (not shown) to which an external memory can be connected. Examples of external memory include memory cards and USB (Universal Serial Bus) flash memories. Therefore, examples of external memory ports include memory card ports (memory card readers) and USB ports. The output signal described above includes a signal indicating information (external memory data) stored in the external memory connected to the external memory connector.

[0025] 3, the second wireless transceiver 302 and the third wireless transceiver 303 are positioned at a certain distance from each other. The positional relationship between the second wireless transceiver 302 and the third wireless transceiver 303 will be described in more detail later.

[0026] 2 and 3, the second wireless transceiver 302 is preferably located inside the first communication opening 26A when viewed in the Z2 direction (Z direction). The first communication opening 26A is one of the multiple communication openings 26. As shown in FIG. 3, the third wireless transceiver 303 is preferably located inside the second communication opening 26B when viewed in the Z2 direction (Z direction). The second communication opening 26B is a communication opening 26 separate from the first communication opening 26A.

[0027] 1 to 3, the numerical control device 10 further includes a detachable structure 34. The detachable structure 34 is a structure (structural element) for detachably supporting the display device 14 on the numerical control device main body 12. The detachable structure 34 includes an adapter 36 that is detachable from the back portion 14b (rear panel 24). The material of the adapter 36 is, for example, metal, but is not limited to this. For example, at least a portion of the adapter 36 may be made of resin.

[0028] The adapter 36 may be provided with a portion of the pair of snap fits 20 ( FIG. 1 ) described above. More specifically, the pair of snap fits 20 have a pair of hooks 38 and a pair of hook holding portions 40. The pair of hooks 38 can be hooked onto the pair of hook holding portions 40. The adapter 36 may be provided with one of the hooks 38 or the hook holding portions 40. In this embodiment, a case will be described in which the adapter 36 is provided with the pair of hook holding portions 40. The pair of hook holding portions 40 are arranged at an interval in the X direction, but this is not limited to this. Note that the other of the hooks 38 and the hook holding portion 40 is provided on the housing 16. Therefore, in this embodiment, the pair of hooks 38 are provided on the housing 16. Note that the specific shape of the snap fits 20 (hooks 38, hook holding portions 40) is not limited to that illustrated in this embodiment.

[0029] The adapter 36 also includes a plurality of protrusions 42. The plurality of protrusions 42 protrude from the adapter 36 in the Z2 direction. In this embodiment, the direction from the display device 14 toward the numerical control device main body 12 coincides with the Z2 direction. Therefore, the protrusion direction of the plurality of protrusions 42 coincides with the direction from the display device 14 toward the numerical control device main body 12.

[0030] FIG. 4 is a front perspective view of the numerical control device main body 12. FIG.

[0031] 4, the numerical control device main body 12 (housing 16) is formed with a plurality of holes 44 in advance. When the numerical control device main body 12 is disposed on the back 14b of the display device 14, the plurality of holes 44 receive the plurality of protrusions 42.

[0032] At least one of the plurality of protrusions 42 has a hook portion 46. When the protrusion 42 is inserted into the hole 44, the hook portion 46 engages with a locking portion (not shown) provided on the numerical control device main body 12 (housing 16). The position of the hook portion 46 on the protrusion 42 is, for example, the tip end of the protrusion 42 in the Z2 direction, but is not limited to this. Furthermore, similar to the hook 38 of the snap fit 20, the specific shape of the hook portion 46 is not limited to that shown in the present embodiment.

[0033] At least one of the multiple protrusions 42 includes a power receiving terminal 48. The power receiving terminal 48 is a terminal through which the display device 14 receives power. The power receiving terminal 48 includes, for example, a conductive pin disposed on the surface of the protrusion 42. When the adapter 36 is attached to the back portion 14b of the display device 14, the power receiving terminal 48 is connected to the display circuit 22c of the display device 14 via the first power receiving opening 28A or the second power receiving opening 28B. The first power receiving opening 28A is one of the multiple power receiving openings 28. The second power receiving opening 28B is a power receiving opening 28 separate from the first power receiving opening 28A. The use of the first power receiving opening 28A and the second power receiving opening 28B will be described later.

[0034] At least one of the holes 44 is provided with a power supply terminal 50. The power supply terminal 50 is a terminal for supplying power to the display device 14 (display circuit 22c) via the power receiving terminal 48. The power supply terminal 50 includes a conductor pin disposed on the inner surface of the hole 44.

[0035] As described above, when the numerical control device main body 12 is disposed on the back 14b of the display device 14, the multiple protrusions 42 are inserted into the multiple holes 44. When the multiple protrusions 42 are inserted into the multiple holes 44, the power receiving terminal 48 and the power supply terminal 50 come into contact with each other. The power receiving terminal 48 and the power supply terminal 50 come into contact with each other, thereby establishing electrical continuity. In other words, when the numerical control device main body 12 is disposed on the back 14b of the display device 14, the power receiving terminal 48 and the power supply terminal 50 are established electrical continuity.

[0036] Although not specifically shown in the drawings, the numerical control device main body 12 may be provided with a protrusion 42, and the display device 14 may be provided with a hole 44. In this case, the protrusion 42 may be provided with a power supply terminal 50. Furthermore, the hole 44 may be provided with a power receiving terminal 48.

[0037] As described above, the adapter 36 is detachably attached to the rear portion 14b (back panel 24) of the display device 14. In this regard, the rear portion 14b has a plurality of attachment portions 52, which will be described below. The plurality of attachment portions 52 include a first attachment portion 521 (FIG. 3) and a second attachment portion 522 (FIG. 5).

[0038] The first mounting portion 521 is a portion to which the adapter 36 is attached when the display device 14 is attached to the numerical control device main body 12 in a first orientation. The first orientation is an orientation in which the longitudinal direction DL of the display device 14 is aligned with the X direction ( FIG. 3 ). The orientation in which the longitudinal direction DL of the display device 14 is aligned with the X direction can include, for example, an orientation in which the display device 14 is placed horizontally.

[0039] The adapter 36 is attached to the back portion 14b (rear panel 24) by, for example, a plurality of screws 54. When the adapter 36 is attached to the back portion 14b by a plurality of screws 54, the adapter 36 is provided with a plurality of through holes 36h. The first attachment portion 521 also has a plurality of screw holes 56a. The plurality of screws 54 passing through the plurality of through holes 36h can be respectively threaded into the plurality of screw holes 56a. The plurality of screw holes 56a can be arranged so that the adapter 36 in a predetermined position can be attached to the back portion 14b of the display device 14 in the first position. The predetermined position of the adapter 36 is, for example, the position of the adapter 36 when the pair of snap fits 20 are aligned in the X direction.

[0040] When the adapter 36 is attached to the first attachment portion 521, the power receiving terminal 48 is connected to the display circuit 22c (display circuit board 22) of the display device 14 through the first power receiving opening 28A. In other words, the position of the first power receiving opening 28A can be determined depending on the position of the power receiving terminal 48 when the adapter 36 is attached to the first attachment portion 521.

[0041] Furthermore, when the adapter 36 is attached to the first attachment portion 521, the second wireless transceiver 302 is located within the communication range of the first wireless transceiver 301. When the adapter 36 is attached to the first attachment portion 521, it is preferable that the positions of the first wireless transceiver 301 and the second wireless transceiver 302 overlap in a plan view along the Z direction (see also the dashed dotted line CL1 in FIG. 2 ).

[0042] Fig. 5 is another exploded perspective view of the display device 14. Fig. 5 shows the second mounting portion 522 and the adapter 36 attached to the second mounting portion 522. Fig. 6 is another exploded perspective view of the numerical control device 10. Fig. 6 shows the numerical control device 10 in the case where the numerical control device main body 12 is supported by the adapter 36 attached as in Fig. 5.

[0043] The second mounting portion 522 is a portion where the adapter 36 is attached when the display device 14 is attached to the numerical control device main body 12 in the second orientation. The second orientation is an orientation in which the longitudinal direction DL of the display device 14 is aligned with the Y direction ( FIG. 5 ). The second orientation can include an orientation in which the display device 14 is placed vertically.

[0044] The second mounting portion 522 may have a plurality of screw holes 56b. A plurality of screws 54 passing through the plurality of through holes 36h can be screwed into the plurality of screw holes 56b, respectively. The plurality of screw holes 56b may be arranged so that the adapter 36 in a predetermined position is attached to the back portion 14b (back panel 24) of the display device 14 in the second position. Note that at least one of the plurality of screw holes 56a described above may also serve as the screw hole 56b.

[0045] When the adapter 36 is attached to the second attachment portion 522, the power receiving terminal 48 is connected to the display circuit 22c (display circuit board 22) of the display device 14 through the second power receiving opening 28B. In other words, the position of the second power receiving opening 28B can be determined depending on the position of the power receiving terminal 48 when the adapter 36 is attached to the second attachment portion 522.

[0046] Furthermore, when the adapter 36 is attached to the second attachment portion 522, the third wireless transceiver 303 is located within the communication range of the first wireless transceiver 301. When the adapter 36 is attached to the second attachment portion 522, it is preferable that the positions of the first wireless transceiver 301 and the third wireless transceiver 303 overlap in a plan view along the Z direction (see also the dashed dotted line CL2 in FIG. 6 ).

[0047] An exposure opening 58 may be formed in the adapter 36. When the adapter 36 is attached to the first mounting portion 521, the exposure opening 58 communicates with the first communication opening 26A. As a result, when the adapter 36 is attached to the first mounting portion 521, the second wireless transceiver 302 is exposed through the first communication opening 26A and the exposure opening 58 (see also FIG. 2). When the adapter 36 is attached to the second mounting portion 522, the exposure opening 58 communicates with the second communication opening 26B. As a result, when the adapter 36 is attached to the second mounting portion 522, the second wireless transceiver 302 is exposed through the second communication opening 26B and the exposure opening 58 (see also FIG. 6).

[0048] With the above configuration, the numerical control device 10 exhibits the following advantageous effects, for example.

[0049] The second wireless transceiver 302 can wirelessly communicate with the first wireless transceiver 301 by being located within the communication range of the first wireless transceiver 301. For example, the first wireless transceiver 301 wirelessly transmits a control signal for controlling the display device 14. The second wireless transceiver 302 wirelessly receives the control signal by being located within the communication range of the first wireless transceiver 301. This allows the control signal to be supplied from the numerical control device main body 12 to the display device 14. In this manner, a connector connecting the numerical control device main body 12 and the display device 14 to transmit and receive signals between them is not required. A numerical control device 10 that does not include a connector does not require measures to protect the connector from vibration and impact. For example, since the numerical control device 10 does not include a connector, a structure to protect the connector from vibration and impact is not required. Furthermore, according to this embodiment, a user does not need to use a relatively large force when mating the connector of the display device 14 with the numerical control device main body 12. Furthermore, according to this embodiment, the user does not need to apply a relatively large force when disengaging the connector provided on the display device 14 from the numerical control device main body 12. Thus, according to this embodiment, the display device 14 can be attached to and detached from the numerical control device main body 12 without requiring a relatively large force.

[0050] The display device 14 has a power receiving terminal 48. In contrast, the numerical control device main body 12 has a power supply terminal 50. When the display device 14 is attached to the numerical control device main body 12, the power receiving terminal 48 and the power supply terminal 50 come into contact with each other. This allows power to be supplied from the numerical control device main body 12 to the display device 14 without the need for a connector. Furthermore, there is no need to connect the display device 14 to a power supply source separately from the attachment of the display device 14 to the numerical control device main body 12.

[0051] According to this embodiment, when the display device 14 is attached to the numerical control device main body 12, the protrusion 42 of the display device 14 is inserted into the hole 44 of the numerical control device main body 12. As a result, the display device 14 is supported by the numerical control device main body 12 via the protrusion 42. In addition, the power supply terminal 50 is provided in the hole 44. As a result, when the protrusion 42 is inserted into the hole 44, the power receiving terminal 48 and the power supply terminal 50 can come into contact with each other.

[0052] The protrusion 42 has a hook portion 46. When the protrusion 42 is inserted into the hole 44, the hook portion 46 engages with a locking portion (not shown) provided on the numerical control device main body 12. This allows the display device 14 and the numerical control device main body 12 to be more firmly connected via the protrusion 42. By more firmly connecting the display device 14 and the numerical control device main body 12, the power receiving terminal 48 and the power supply terminal 50 can be more reliably brought into contact with each other.

[0053] The protrusion 42 may be provided on the numerical control device main body 12, but is preferably provided on the display device 14. The reason for this is that the numerical control device main body 12 may be used without the display device 14. In other words, if the display device 14 is not attached to the numerical control device main body 12, the protrusion 42 provided on the numerical control device main body 12 may get in the way during use of the numerical control device main body 12. In addition, in this case, an excellent appearance cannot be obtained. Therefore, it is preferable that the protrusion 42 be provided on the display device 14.

[0054] The display device 14 includes an adapter 36. The adapter 36 is detachable from the back 14b (rear panel 24) of the display device 14. The display device 14 is attached to the numerical control device main body 12 via the adapter 36. This allows the numerical control device main body 12 to be hidden behind the display device 14 when viewed from the front. This gives the user, who views the display screen of the display device 14, the impression that the numerical control device 10 has a simple appearance.

[0055] The back 14b of the display device 14 has a first attachment portion 521 and a second attachment portion 522. When the display device 14 is attached to the numerical control device main body 12 in the first orientation, the adapter 36 is attached to the first attachment portion 521. When the display device 14 is attached to the numerical control device main body 12 in the second orientation, the adapter 36 is attached to the second attachment portion 522. In this manner, the orientation of the display device 14 can be changed without changing the orientation of the numerical control device main body 12.

[0056] When the adapter 36 is attached to the first attachment portion 521, the second wireless transceiver 302 is located within the communication range of the first wireless transceiver 301. As a result, when the adapter 36 is attached to the first attachment portion 521, the second wireless transceiver 302 can receive a control signal.

[0057] In this embodiment, when the adapter 36 is attached to the second attachment portion 522, the second wireless transceiver 302 is located outside the communication range of the first wireless transceiver 301. However, when the adapter 36 is attached to the second attachment portion 522, the third wireless transceiver 303 is located within the communication range of the first wireless transceiver 301. Therefore, when the adapter 36 is attached to the second attachment portion 522, the third wireless transceiver 303 can receive control signals.

[0058] Furthermore, when the adapter 36 is attached to the first mounting portion 521, it is preferable that the positions of the first wireless transceiver 301 and the second wireless transceiver 302 overlap in a plan view along the Z direction. As a result, when the adapter 36 is attached to the first mounting portion 521, the positions of the first wireless transceiver 301 and the second wireless transceiver 302 are closest to each other in the plan view. By positioning the first wireless transceiver 301 and the second wireless transceiver 302 as close as possible to each other, it is possible to ensure good communication strength in the wireless communication between the first wireless transceiver 301 and the second wireless transceiver 302. The Z direction corresponds to the front-to-rear direction of the numerical control device 10 (display device 14).

[0059] Moreover, according to this embodiment, when the adapter 36 is attached to the first mounting portion 521, the second wireless transceiver 302 is exposed through the first communication opening 26A and the exposure opening 58. As a result, the back plate 24 and the adapter 36 do not interfere with wireless communication between the first wireless transceiver 301 and the second wireless transceiver 302 when the adapter 36 is attached to the first mounting portion 521. In other words, the back plate 24 and the adapter 36 may be made of a metal that can interfere with wireless communication. However, according to this embodiment, because the second wireless transceiver 302 is exposed, wireless communication between the first wireless transceiver 301 and the second wireless transceiver 302 is not interfered with by the back plate 24 and the adapter 36.

[0060] According to this embodiment, the first wireless transceiver 301 is housed in the housing 16. As described above, the housing 16 of the numerical control device main body 12 is made of resin. Resin is less likely to interfere with wireless communication than metal. Therefore, wireless communication between the first wireless transceiver 301 and the second wireless transceiver 302 is less likely to be interfered with by the housing 16.

[0061] When the adapter 36 is attached to the second attachment portion 522, it is preferable that the positions of the first wireless transceiver 301 and the third wireless transceiver 303 overlap in a plan view along the Z direction. As a result, when the adapter 36 is attached to the second attachment portion 522, the positions of the first wireless transceiver 301 and the third wireless transceiver 303 are closest in the plan view. As a result, it is possible to ensure good communication strength of wireless communication between the first wireless transceiver 301 and the third wireless transceiver 303.

[0062] Furthermore, when the adapter 36 is attached to the second attachment portion 522, the third wireless transceiver 303 is exposed through the second communication opening 26B and the exposure opening 58. As a result, the back plate 24 and the adapter 36 do not interfere with wireless communication between the first wireless transceiver 301 and the third wireless transceiver 303 when the adapter 36 is attached to the second attachment portion 522. Furthermore, the housing 16 does not interfere with wireless communication between the first wireless transceiver 301 and the third wireless transceiver 303. The reason for this is the same as the reason why wireless communication between the first wireless transceiver 301 and the third wireless transceiver 303 is not interfered with by the back plate 24, the adapter 36, the housing 16, etc.

[0063] One embodiment may be modified as follows. In the following modifications, descriptions that overlap with the embodiment will be omitted as appropriate. In addition, in the drawings used in the following modifications, the same reference numerals are used for the same components as those described in the embodiment.

[0064] (Modification 1) Fig. 7 is a perspective view showing a part of the display device 14 (display device 141) according to Modification 1. Fig. 7 shows an enlarged view of a part of the back part 14b of the display device 141.

[0065] The display device 141 may further include a covering member 60. The covering member 60 is formed of resin. Materials for the covering member 60 include, but are not limited to, PET (polyethylene terephthalate). The covering member 60 is, for example, a film member such as a PET sheet, but is not limited to this.

[0066] The covering member 60 may be provided to cover at least one of the second wireless transceiver 302 and the third wireless transceiver 303. Therefore, for example, the covering member 60 may be provided in at least one of the first communication opening 26A and the second communication opening 26B. However, as shown in FIG. 7 , the covering member 60 is preferably provided in the exposure opening 58. In this case, it is not necessary to provide separate covering members 60 for the first communication opening 26A and the second communication opening 26B. In other words, when the adapter 36 is attached to the first mounting portion 521, the second wireless transceiver 302 is covered by the covering member 60 provided in the exposure opening 58. Furthermore, when the adapter 36 is attached to the second mounting portion 522, the third wireless transceiver 303 is covered by the covering member 60 provided in the exposure opening 58.

[0067] Resin is less likely to interfere with wireless communication than metal. Therefore, the covering member 60 covering the second wireless transceiver 302 does not interfere with wireless communication between the first wireless transceiver 301 and the second wireless transceiver 302. Similarly, the covering member 60 covering the third wireless transceiver 303 does not interfere with wireless communication between the first wireless transceiver 301 and the third wireless transceiver 303. The covering member 60 can protect the second wireless transceiver 302 and the third wireless transceiver 303 from foreign matter without interfering with wireless communication. Foreign matter includes, for example, but is not limited to, splashes of cutting fluid.

[0068] (Modification 2) Fig. 8 is a perspective view of the numerical control device main body 12 (numerical control device main body 122) according to Modification 2. Fig. 9 is a plan view including the first wireless transceiver 301 shown in Fig. 8. Note that the control board 182 other than the backboard 181 is omitted from Figs. 8 and 9.

[0069] The numerical control device main body 122 includes a noise shielding member 62 (first noise shielding member 621). The first noise shielding member 621 includes, for example, a metal plate. The first noise shielding member 621 is provided so as to cover the first wireless transceiver 301.

[0070] The first noise-shielding member 621 prevents the first wireless transceiver 301 from receiving noise. The first noise-shielding member 621 also prevents electromagnetic waves emitted from the first wireless transceiver 301 from reaching the surroundings of the first wireless transceiver 301.

[0071] 10 is a perspective view showing a part of the display device 14 (display device 142) according to Modification 2. A partially enlarged view of the back part 14b of the display device 142 is shown in FIG.

[0072] The display device 142 includes a second noise shielding member 622. The second noise shielding member 622 is a noise shielding member 62 separate from the first noise shielding member 621. The second noise shielding member 622 is provided, for example, in the adapter 36. The second noise shielding member 622 includes, for example, a conductive packing. The second noise shielding member 622 is provided so as to surround the exposure opening 58 in a plan view along the Z direction.

[0073] When the adapter 36 is attached to the first attachment portion 521, the second noise shielding member 622 surrounds the second wireless transceiver 302 in a plan view along the Z direction of the display device 142. In this case, the second noise shielding member 622 prevents the second wireless transceiver 302 from receiving noise. Furthermore, when the adapter 36 is attached to the first attachment portion 521, the second noise shielding member 622 prevents electromagnetic waves emitted from the second wireless transceiver 302 from reaching the periphery of the second wireless transceiver 302.

[0074] Although not shown in the drawings, when the adapter 36 is attached to the second attachment portion 522, the second noise shielding member 622 surrounds the third wireless transceiver 303 in a plan view along the Z direction of the display device 142. In this case, the second noise shielding member 622 prevents the third wireless transceiver 303 from receiving noise. Furthermore, when the adapter 36 is attached to the second attachment portion 522, the second noise shielding member 622 prevents electromagnetic waves emitted from the third wireless transceiver 303 from reaching the periphery of the third wireless transceiver 303.

[0075] (Modification 3) FIG. 11 is a rear perspective view of the display device 14 (display device 143) according to Modification 3. As shown in FIG.

[0076] The back portion 14b (back panel 24) of the display device 14 and the detachable structure 34 may be integrated. For example, as shown in Fig. 11, the back portion 14b of a display device 143 is provided with a back panel 24 integrated with the detachable structure 34. In this case, the third wireless transceiver 303 may be omitted. The second wireless transceiver 302 is exposed through a communication opening 26 formed in the back portion 14b.

[0077] (Variation 4) Even if the display device 14 has multiple attachment parts 52, the display device 14 may be provided with a single wireless transceiver 30. For example, even if the adapter 36 is attached to the second attachment part 522, there may be cases where the second wireless transceiver 302 is located within the communication range of the first wireless transceiver 301. In such cases, the third wireless transceiver 303 may be omitted.

[0078] (Variation 5) The arrangement of the power receiving terminal 48 and the arrangement of the power supply terminal 50 may be changed as appropriate. For example, the power receiving terminal 48 may be provided at a location on the display device 14 other than the protrusion 42. The power supply terminal 50 may be provided at a location on the numerical control device main body 12 other than the hole 44. Even in this case, the power receiving terminal 48 and the power supply terminal 50 are arranged so as to come into contact with each other when the display device 14 is attached to the numerical control device main body 12.

[0079] (Variation 6) The display device 14 may be connected to the power source (numerical control device main body 12) via a power supply cable (not shown). In this case, power can be supplied to the display device 14 via the power supply cable.

[0080] (Variation 7) The display device 14 may include a battery (not shown). In this case, the display device 14 can be operated by power stored in the battery. The battery includes, but is not limited to, a secondary battery, for example.

[0081] (Variation 8) The display device 14 may be provided with a power supply unit (not shown). In this case, the display device 14 can operate using power supplied via the power supply unit. This allows the display device 14 to operate without receiving power from the numerical control device main body 12.

[0082] (Modification 9) When the back portion 14b (rear panel 24) of the display device 14 is made of a material that does not interfere with wireless communication, the communication opening 26 may be omitted. For example, when the back portion 14b is made of resin, the communication opening 26 may be omitted.

[0083] Similarly, if the adapter 36 is made of a material that is less likely to interfere with wireless communication, the exposure opening 58 may be omitted. For example, if the adapter 36 is made of resin, the exposure opening 58 may be omitted.

[0084] On the other hand, if the housing 16 of the numerical control device main body 12 is made of a material that easily interferes with wireless communication, it is preferable that an opening be formed in the housing 16 to expose the first wireless transceiver 301. For example, if the housing 16 is made of metal, it is preferable that an opening be formed in the housing 16 to expose the first wireless transceiver 301.

[0085] (Modification 10) The display device 14 may have three or more attachment portions 52 .

[0086] For example, the display device 14 has a first mounting portion 521 and a second mounting portion 522 (see also one embodiment). The display device 14 may further have a mounting portion 52 that tilts the numerical control device main body 12 with respect to the longitudinal direction DL (see also FIG. 3 ) of the display device 14. The mounting portion 52 may be provided on the back portion 14b of the display device 14, similar to the first mounting portion 521, the second mounting portion 522, etc.

[0087] Furthermore, the first mounting portion 521 is a mounting portion 52 to which the adapter 36 can be attached when the display device 14 is attached to the numerical control device main body 12 in the first orientation (see also one embodiment). The display device 14 may further include another mounting portion 52 to which the adapter 36 can be attached when the display device 14 is attached to the numerical control device main body 12 in the first orientation. The relative positions of the another mounting portion 52 and the first mounting portion 521 on the back portion 14b are different in at least one of the X and Y directions. This allows the user to mount the numerical control device main body 12 in the first orientation at a position shifted, for example, in the X1 direction, X2 direction, Y1 direction, or Y2 direction, compared to when the numerical control device main body 12 (adapter 36) in the first orientation is attached to the first mounting portion 521.

[0088] Furthermore, the second mounting portion 522 is a mounting portion 52 to which the adapter 36 can be attached when the display device 14 is attached to the numerical control device main body 12 in the second orientation (see also one embodiment). The display device 14 may further include another mounting portion 52 to which the adapter 36 can be attached when the display device 14 is attached to the numerical control device main body 12 in the second orientation. The relative positions of the another mounting portion 52 and the second mounting portion 522 on the back portion 14b are different in at least one of the X and Y directions. This allows the user to mount the numerical control device main body 12 in the second orientation at a position shifted, for example, in the X1 direction, X2 direction, Y1 direction, or Y2 direction, compared to when the numerical control device main body 12 (adapter 36) in the second orientation is attached to the second mounting portion 522.

[0089] This modification provides convenience for the user. Each of the multiple mounting portions 52 has multiple screw holes (56a, 56b). A screw hole in one of the multiple mounting portions 52 may overlap with a screw hole in another of the multiple mounting portions 52. The number, arrangement, etc. of communication openings 26 (see also one embodiment) provided in the display device 14 may be determined appropriately depending on the number, arrangement, etc. of the mounting portions 52 of the display device 14. Similarly, the number, arrangement, etc. of wireless transceivers 30 provided in the display device 14 may be determined appropriately depending on the number, arrangement, etc. of the mounting portions 52 of the display device 14.

[0090] According to the embodiment and the modified example, the reliability of the numerical control device 10 is good.

[0091] The following additional notes are further disclosed regarding the above embodiment.

[0092] (Supplementary Note 1) The numerical control device (10) of the present disclosure is a numerical control device comprising a numerical control device main body (12) and a display device (14) attached to the numerical control device main body, and is provided with a plurality of wireless transceivers (30) including a first wireless transceiver (301) provided on the numerical control device main body and a second wireless transceiver (302) provided on the display device, wherein the second wireless transceiver is located within the communication range of the first wireless transceiver and is thereby capable of communicating with the first wireless transceiver.

[0093] (Appendix 2) The numerical control device according to Appendix 1 may be such that the display device has a power receiving terminal (48) for receiving a supply of power, the numerical control device main body has a power supply terminal (50) for supplying the power to the display device, and when the display device is attached to the numerical control device main body, the power receiving terminal and the power supply terminal come into contact with each other.

[0094] (Appendix 3) The numerical control device according to Appendix 2 may be a numerical control device in which the display device has a protrusion (42) that protrudes toward the main body of the numerical control device, the main body of the numerical control device is formed with a hole (44) into which the protrusion can be inserted, the power receiving terminal is provided on the protrusion, and the power supply terminal is provided in the hole.

[0095] (Supplementary Note 4) The numerical control device according to Supplementary Note 3 may be a numerical control device in which the protrusion has a hook portion (46) that engages with the numerical control device body when the protrusion is inserted into the hole.

[0096] (Appendix 5) The numerical control device according to any one of Appendices 1 to 4 may be a numerical control device in which the display device is capable of supporting the numerical control device main body and is provided with an adapter (36) that is detachable from a back part (14b) of the display device, and the display device is attached to the numerical control device main body via the adapter.

[0097] (Appendix 6) The numerical control device according to Appendix 5 may be a numerical control device in which the back part has a first mounting part (521) to which the adapter is attached when the display device is attached to the numerical control device main body in a first position, and a second mounting part (522) to which the adapter is attached when the display device is attached to the numerical control device main body in a second position.

[0098] (Appendix 7) The numerical control device according to Appendix 6 may be such that the plurality of wireless transceivers further include a third wireless transceiver (303) provided in the display device separately from the second wireless transceiver, and when the display device is attached to the numerical control device main body with the adapter attached to the first attachment section, the second wireless transceiver is located within the communication range, and when the display device is attached to the numerical control device main body with the adapter attached to the second attachment section, the third wireless transceiver is located within the communication range.

[0099] (Appendix 8) The numerical control device according to Appendix 7 may be such that, when the display device is attached to the numerical control device main body with the adapter attached to the first attachment section, the position of the first wireless transceiver and the position of the second wireless transceiver overlap in a plan view along the front-to-rear direction of the display device, and when the display device is attached to the numerical control device main body with the adapter attached to the second attachment section, the position of the first wireless transceiver and the position of the third wireless transceiver overlap in the plan view.

[0100] (Appendix 9) The numerical control device according to any one of Appendices 1 to 5 may be a numerical control device in which the position of the first wireless transceiver and the position of the second wireless transceiver overlap in a planar view along the front-to-rear direction of the display device.

[0101] Although the present disclosure has been described in detail, the present disclosure is not limited to the individual embodiments described above. Various additions, substitutions, modifications, partial deletions, etc. are possible in these embodiments without departing from the gist of the present disclosure or the spirit of the present disclosure derived from the content of the claims and their equivalents. These embodiments can also be implemented in combination. For example, in the above-described embodiments, the order of each operation and the order of each process are shown as examples and are not limited to these. The same applies when numerical values ​​or mathematical expressions are used in the description of the above-described embodiments.

[0102] REFERENCE SIGNS LIST 10...Numerical control device 12...Numerical control device main body 14...Display device 14b...Back portion 30...Wireless transceiver 36...Adapter 42...Protrusion 44...Hole portion 46...Hook portion 48...Power receiving terminal 50...Power supply terminal 301...First wireless transceiver 302...Second wireless transceiver 303...Third wireless transceiver 521...First mounting portion 522...Second mounting portion

Claims

1. A numerical control device comprising a numerical control device main body and a display device attached to the numerical control device main body, the numerical control device comprising a plurality of wireless transceivers including a first wireless transceiver provided in the numerical control device main body and a second wireless transceiver provided in the display device, the second wireless transceiver being capable of communicating with the first wireless transceiver by being located within the communication range of the first wireless transceiver.

2. The numerical control device according to claim 1, wherein the display device includes a power receiving terminal for receiving power supply, the numerical control device main body includes a power supply terminal for supplying the power to the display device, and when the display device is attached to the numerical control device main body, the power receiving terminal and the power supply terminal are in contact with each other.

3. The numerical control device according to claim 2, wherein the display device has a protruding portion protruding toward the numerical control device main body, a hole portion into which the protruding portion can be inserted is formed in the numerical control device main body, the power receiving terminal is provided in the protruding portion, and the power supply terminal is provided in the hole portion.

4. The numerical control device according to claim 3, wherein the protruding portion has a hook portion that engages with the numerical control device main body when the protruding portion is inserted into the hole portion.

5. The numerical control device according to any one of claims 1 to 4, wherein the display device is capable of supporting the numerical control device main body and includes a detachable adapter on the back of the display device, and the display device is attached to the numerical control device main body via the adapter.

6. The numerical control device according to claim 5, wherein the back has a first attachment portion to which the adapter is attached when the display device is attached to the numerical control device main body in a first posture, and a second attachment portion to which the adapter is attached when the display device is attached to the numerical control device main body in a second posture.

7. The numerical control device according to claim 6, wherein the plurality of wireless transceivers further includes a third wireless transceiver provided in the display device separately from the second wireless transceiver, and when the display device is mounted on the numerical control device main body with the adapter mounted on the first mounting portion, the second wireless transceiver is located within the communicable range, and when the display device is mounted on the numerical control device main body with the adapter mounted on the second mounting portion, the third wireless transceiver is located within the communicable range. Numerical control device.

8. The numerical control device according to claim 7, wherein when the display device is mounted on the numerical control device main body with the adapter mounted on the first mounting portion, the position of the first wireless transceiver and the position of the second wireless transceiver overlap in a plan view along the front-rear direction of the display device, and when the display device is mounted on the numerical control device main body with the adapter mounted on the second mounting portion, the position of the first wireless transceiver and the position of the third wireless transceiver overlap in the plan view. Numerical control device.

9. The numerical control device according to any one of claims 1 to 5, wherein the position of the first wireless transceiver and the position of the second wireless transceiver overlap in a plan view along the front-rear direction of the display device. Numerical control device.

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