Machine monitoring system and machine monitoring method

Abstract

A mechanical equipment monitoring system is provided with: a sensor; a mechanical device that is provided with an actuator and a communication unit that transmits a trigger signal when the actuator is in a suitable state in order to detect the operating state of the actuator by means of the sensor; an information collection device that, upon receiving the trigger signal from the communication unit, collects, from the sensor, operation state data indicating the operation state detected by the sensor; and an information processing device that monitors the actuator on the basis of the operating state data collected by the information collection device.

Description

Technical Field

[0001] The present disclosure relates to a machine equipment monitoring system and a machine equipment monitoring method for monitoring machine equipment. Background Art

[0002] In recent years, there has been a trend to shift from time-based maintenance to condition-based maintenance in order to improve the efficiency of mechanical equipment maintenance. As a means of achieving condition-based maintenance, it is effective to monitor and diagnose the condition of mechanical components such as bearings, ball screws, and linear guides. However, in the past, since mechanical equipment such as machine tools perform processing while moving the workpiece three-dimensionally, there was a problem that the driving state of the mechanical components changed all the time and was not suitable for abnormality diagnosis.

[0003] In contrast, Patent Document 1 discloses a diagnostic system for a machine tool, which includes: a component whose state changes according to the operation of an actuator of the machine tool; a sensor that detects the state of the component; a signal processing device that processes the signal of the sensor; a control device that is provided in the machine tool to control the operation of the actuator; an input / output device that inputs a command for causing the control device to operate the actuator and reports the operating status of the actuator; and a remote monitoring device that analyzes the state of the component. In the diagnostic system of Patent Document 1, the control device sends a first instruction to the signal processing device to instruct the generation and transmission of simple state description data related to the occurrence of an abnormality of the component, and the signal processing device generates the simple state description data according to the received first instruction and transmits it to the control device.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent No. 7104858 Summary of the invention

[0007] Problem that the invention aims to solve

[0008] However, in Patent Document 1, since the simple state description data is sent to the control device on the mechanical equipment side such as a machine tool, the control device on the mechanical equipment side needs a communication interface (I / F) for receiving the simple state description data and a corresponding processing capability. Therefore, in Patent Document 1, there is a problem that a mechanical equipment having a simple structure that does not have a control device having a communication I / F and a corresponding processing capability cannot be diagnosed.

[0009] An object of the present disclosure is to provide a machine monitoring system and a machine monitoring method that enable diagnosis of a machine having a simple configuration by eliminating the need for the machine side to receive data for diagnosing the machine.

[0010] Solutions for solving problems

[0011] The mechanical equipment monitoring system involved in the present disclosure comprises: a sensor; a mechanical equipment having an actuator and a communication unit, wherein the communication unit sends a trigger signal when the actuator is in a suitable state in order to detect the operating state of the actuator through the sensor; an information collection device, which collects operating state data representing the operating state detected by the sensor from the sensor when receiving the trigger signal from the communication unit; and an information processing device, which monitors the actuator based on the operating state data collected by the information collection device.

[0012] Effects of the Invention

[0013] According to the present disclosure, by eliminating the need for the machine side to receive data for diagnosing the machine, it is possible to diagnose the machine having a simple configuration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a block diagram showing the configuration of a machine monitoring system according to the first embodiment of the present invention.

[0015] Figure 2 This is a flowchart showing the operation of the machine tool of the machine equipment monitoring system according to the first embodiment of the present invention.

[0016] Figure 3 This is a flowchart showing the operation of the information collection device of the machine monitoring system according to the first embodiment of the present invention.

[0017] Figure 4 This is a sequence diagram of the machine monitoring system according to the first embodiment of the present invention.

[0018] Figure 5 This is a timing chart of the machine monitoring system according to the first embodiment of the present invention.

[0019] Figure 6 This is a timing chart of the machine monitoring system according to the second embodiment of the present invention.

[0020] Figure 7 This is another example of the timing chart of the machine monitoring system according to the second embodiment of the present invention.

[0021] Figure 8This is a timing chart of the machine monitoring system according to the third embodiment of the present invention.

[0022] Fig. 9 It is a block diagram showing the configuration of a machine monitoring system according to a fourth embodiment of the present invention.

[0023] Fig.10 This is a sequence diagram of a machine monitoring system according to a fifth embodiment of the present invention.

[0024] Fig.11 This is a block diagram showing the configuration of a machine monitoring system according to a sixth embodiment of the present invention.

[0025] Fig.12 This is a sequence diagram of a machine monitoring system according to a sixth embodiment of the present invention.

[0026] Fig.13 This is a timing chart of the machine monitoring system according to the sixth embodiment of the present invention.

[0027] Fig.14 This is a block diagram showing the configuration of a machine monitoring system according to a seventh embodiment of the present invention.

[0028] Fig.15 This is a sequence diagram of the machine monitoring system according to the seventh embodiment of the present invention.

[0029] Fig.16 This is a timing chart of the machine monitoring system according to the seventh embodiment of the present invention. DETAILED DESCRIPTION

[0030] The following is an explanation of the embodiments of the present invention with reference to the accompanying drawings. In the drawings, identical or similar parts are marked with identical or similar reference numerals. However, the drawings are schematic drawings, and the relationship between thickness and plane dimensions, the ratio of thickness of each layer, etc., are sometimes different from the actual situation. Therefore, the specific thickness and dimensions should be determined with reference to the following description. In addition, the drawings sometimes contain parts with different dimensional relationships or ratios.

[0031] The embodiments shown below are examples of embodiments of devices or methods for embodying the technical concept of the present invention. The materials, shapes, structures, and configurations of the components included in the technical concept of the present invention are not limited to the embodiments described below. In the embodiments described below, various changes can be made within the technical scope specified by the claims described in the claims.

[0032] (First Embodiment)

[0033] <Configuration of machinery and equipment monitoring system>

[0034] First, refer to Figure 1 The configuration of the machine monitoring system 1 according to the first embodiment of the present disclosure will be described in detail.

[0035] The machine monitoring system 1 includes a machine tool 2 , sensors 3 a , 3 b , 3 c , and 3 d , an information collecting device 4 , and an information processing device 6 .

[0036] The machine tool 2 is, for example, a mechanical device capable of processing in three axes (X axis, Y axis, and Z axis). The machine tool 2 includes a control unit 19, a communication unit 20, an X table 21, a Y table 22, a Z table 23, a spindle 24, a linear guide 25, a linear guide 26, a linear guide 27, a ball screw 28, a ball screw 29, and a ball screw 30. In this specification, a mechanical structure (guide element) including a drive source such as a motor and a bearing 24a, a spindle 24, a linear guide 25, a linear guide 26, a linear guide 27, a ball screw 28, a ball screw 29, and a ball screw 30 is sometimes referred to as an actuator. In addition, the actuator only needs to include at least one of the bearing 24a, the spindle 24, the ball screws 28, 29, 30, and the linear guides 25, 26, and 27.

[0037] The control unit 19 controls the overall operation of the machine tool 2 and controls the driving of the X table 21, the Y table 22, the Z table 23, the spindle 24, the linear guide 25, the linear guide 26, the linear guide 27, the ball screw 28, the ball screw 29, and the ball screw 30. The control unit 19 also controls the operation of the communication unit 20.

[0038] The control unit 19 executes a normal cycle and a state monitoring / diagnosis cycle. In the normal cycle, the control unit 19 controls the driving of the X table 21, the Y table 22, the Z table 23, the spindle 24, the linear guide 25, the linear guide 26, the linear guide 27, the ball screw 28, the ball screw 29, and the ball screw 30, so that the processing step of processing the workpiece is repeated a predetermined number of times. In the state monitoring / diagnosis cycle, the control unit 19 repeats the state monitoring / diagnosis step of monitoring and diagnosing the state of the machine tool 2 a predetermined number of times. When executing the state monitoring / diagnosis step, the control unit 19 controls the spindle 24, the linear guide 25, the linear guide 26, the linear guide 27, the ball screw 28, the ball screw 29, and the ball screw 30 so that they are in an appropriate state and set them to a state suitable for monitoring.

[0039] Here, the appropriate state refers to a state in which the actuator operates at an equal speed within a specified period, a state in which the actuator accelerates from a stop and runs at an equal speed and then decelerates to a stop, a state in which the variation of the load applied to the actuator is less than a specified value, or a state in which the variation of the temperature of the actuator is less than a specified value. For example, when the monitoring object is the bearing 24a of the main shaft 24, it is a state in which the constant speed rotation continues for a certain period, when the monitoring object is the linear guide 25, the linear guide 26, or the linear guide 27, it is a state in which the constant speed movement continues for a certain period, and when the monitoring object is the ball screw 28, the ball screw 29, or the ball screw 30, it is a state in which the actuator accelerates from a stop state, moves at an equal speed, and decelerates with the same profile every time. By performing state monitoring / diagnosis in an appropriate state, it is possible to suppress erroneous judgments caused by insufficient data, speed fluctuations of the actuator, and load fluctuations.

[0040] Furthermore, an inappropriate state is a state in which the constant speed or uniform speed motion does not continue for a time sufficient for state monitoring and diagnosis, or a state in which the load fluctuation is large.

[0041] The communication unit 20 operates under the control of the control unit 19 and transmits and receives signals to and from the information collection device 4 .

[0042] The X table 21 supports a workpiece as a workpiece to be processed, and is driven by an X-axis motor (not shown) so as to be movable in the X-axis direction.

[0043] The Y table 22 supports the workpiece, and is driven by a Y-axis motor (not shown) so as to be movable in the Y-axis direction.

[0044] The Z table 23 supports the workpiece, and is driven by a Z-axis motor (not shown) so as to be movable in the Z-axis direction.

[0045] The main shaft 24 is rotatably driven by a main shaft motor (not shown). The main shaft 24 includes a bearing 24 a inside.

[0046] The linear guide 25 supports the X table 21 so that it can move in the X-axis direction.

[0047] The linear guide 26 supports the Y table 22 so that it can move in the Y-axis direction.

[0048] The linear guide 27 supports the Z table 23 so that it can move in the Z-axis direction.

[0049] The ball screw 28 converts the rotational motion of an X-axis motor (not shown) into a linear motion in the X-axis direction and transmits the linear motion to the X-table 21 .

[0050] The ball screw 29 converts the rotational motion of a Y-axis motor (not shown) into a linear motion in the Y-axis direction and transmits the linear motion to the Y-table 22 .

[0051] The ball screw 30 converts the rotational motion of a Z-axis motor (not shown) into a linear motion in the Z-axis direction and transmits the linear motion to the Z stage 23 .

[0052] The sensor 3a is an acceleration sensor provided at or near the main body of the linear guide 25 and the ball screw 28. The sensor 3a detects vibrations indicating the operating state of the linear guide 25 and the ball screw 28, and outputs data of vibration information of the detected vibrations to the information collection device 4. The sensor 3b is an acceleration sensor provided at or near the main body of the linear guide 26 and the ball screw 29. The sensor 3b detects vibrations indicating the operating state of the linear guide 26 and the ball screw 29, and outputs data of vibration information of the detected vibrations to the information collection device 4. The sensor 3c is an acceleration sensor provided at or near the main body of the linear guide 27 and the ball screw 30. The sensor 3c detects vibrations indicating the operating state of the linear guide 27 and the ball screw 30, and outputs data of vibration information of the detected vibrations to the information collection device 4. The sensor 3d is an acceleration sensor provided at or near the main body of the spindle 24. The sensor 3d detects vibration indicating the operating state of the bearing 24a of the main shaft 24, and outputs the data of vibration information of the detected vibration to the information collection device 4. The data of vibration information is operating state data indicating the operating state of the actuator. In addition, in the following description, the four sensors 3a, 3b, 3c, and 3d are sometimes referred to as sensors 3.

[0053] The information collection device 4 is connected to the information processing device 6 via the network 5. When the control unit 19 performs the status monitoring / diagnosis process, the information collection device 4 obtains and collects the vibration information data from the sensor 3. The information collection device 4 generates a data file based on the obtained vibration information data, and sends the generated data file to the information processing device 6 via the network 5.

[0054] The information processing device 6 stores a diagnostic program. When the information processing device 6 receives a data file received via the network 5 from the information collecting device 4, it executes the stored diagnostic program and generates a diagnostic result file based on the data file. The information processing device 6 saves the generated diagnostic result file to a storage unit in the information processing device 6 or an external memory, and monitors and diagnoses the bearing 24a, the linear guide 25, the linear guide 26, the linear guide 27, the ball screw 28, the ball screw 29, and the ball screw 30. The storage unit in the information processing device 6 or the external memory can also be referred to as a storage device. In addition, the external memory is sometimes referred to as a memory, or sometimes referred to as a data memory.

[0055] <Machine tool movement>

[0056] Reference Figure 1 and Figure 2 The operation of the machine tool 2 in the machine equipment monitoring system 1 according to the first embodiment of the present invention will be described in detail.

[0057] The machine tool 2 starts operating when a main power source (not shown) is turned on. Figure 2 Action shown.

[0058] First, the control unit 19 of the machine tool 2 determines whether to start a state monitoring / diagnosis cycle ( S1 ).

[0059] When the state monitoring / diagnosis cycle is not started (S1: No), the control unit 19 starts the normal cycle (S2). In the normal cycle, the control unit 19 drives the X table 21, the Y table 22, the Z table 23, the spindle 24, the linear guide 25, the linear guide 26, the linear guide 27, the ball screw 28, the ball screw 29, and the ball screw 30 to repeat the execution of the processing step a predetermined number of times.

[0060] After that, the control unit 19 ends the normal cycle (S3) and ends this flow.

[0061] On the other hand, when the state monitoring / diagnosis cycle is started (S1: Yes), the control unit 19 controls the spindle 24, the linear guide 25, the linear guide 26, the linear guide 27, the ball screw 28, the ball screw 29, and the ball screw 30 to be driven, and controls the communication unit 20 to send a trigger signal. As a result, the communication unit 20 sends a trigger signal to the information collection device 4 (S4).

[0062] Next, the control unit 19 starts the execution of the state monitoring / diagnosis process (S5), and controls the spindle 24, the linear guide 25, the linear guide 26, the linear guide 27, the ball screw 28, the ball screw 29, and the ball screw 30 to a suitable state and sets them to a state suitable for monitoring.

[0063] Next, the control unit 19 determines whether or not a data acquisition completion signal has been received via the communication unit 20 ( S6 ).

[0064] When the control unit 19 has not received the data acquisition completion signal via the communication unit 20 ( S6 : No), the process returns to the operation of S5 .

[0065] On the other hand, when the control unit 19 receives the data acquisition completion signal through the communication unit 20 (S6: Yes), it determines whether there is a next state monitoring / diagnosis process (S8).

[0066] When there is a next state monitoring / diagnostic process (S8: Yes), the control unit 19 returns to the operation of S4.

[0067] On the other hand, when there is no next state monitoring / diagnosis process (S8: No), the control unit 19 ends the state monitoring / diagnosis loop (S9) and ends this flow.

[0068] <Operation of the information collection device>

[0069] Reference Figure 1 and Figure 3 The operation of the information collecting device 4 of the machine monitoring system 1 according to the first embodiment of the present invention will be described in detail.

[0070] The information collection device 4 starts operating when a main power source (not shown) is turned on. Figure 3 Action shown.

[0071] First, the information collecting device 4 determines whether a trigger signal is received from the machine tool 2 ( S11 ).

[0072] When the information collecting device 4 has not received the trigger signal ( S11 : No), it repeats the operation of S11 .

[0073] On the other hand, when the trigger signal is received ( S11 : Yes), the information collecting device 4 acquires the vibration information data from the sensor 3 ( S12 ).

[0074] Next, the information collecting device 4 performs A / D conversion on the vibration information data ( S13 ).

[0075] Next, the information collecting device 4 generates a data file of the vibration information ( S14 ).

[0076] Next, the information collecting device 4 transmits the data file to the information processing device 6 via the network 5 ( S15 ).

[0077] Next, when the information collecting device 4 has completed the acquisition of vibration information data sufficient for status monitoring and diagnosis, it transmits a data acquisition completion signal as a completion notification to the machine tool 2 ( S16 ), and ends this flow.

[0078] <Operation of the machinery monitoring system>

[0079] Reference Figure 1 and Figure 4 The operation of the machine monitoring system 1 according to the first embodiment of the present invention will be described in detail.

[0080] First, when the control unit 19 of the machine tool 2 starts the state monitoring / diagnosis cycle, the communication unit 20 of the machine tool 2 sends a trigger signal (S21) to the information collection device 4 under the control of the control unit 19. In addition, the control unit 19 starts the execution of the state monitoring / diagnosis process, and controls the spindle 24, the linear guide 25, the linear guide 26, the linear guide 27, the ball screw 28, the ball screw 29, and the ball screw 30 to a suitable state and sets them to a state suitable for monitoring.

[0081] Next, after receiving the trigger signal, the information collection device 4 obtains the output signal of the sensor 3, performs A / D conversion on the obtained sensor signal, and generates a data file (S22).

[0082] Next, the information collecting device 4 transmits the generated data file to the information processing device 6 ( S23 ).

[0083] Next, information collecting device 4 transmits a data acquisition completion signal to machine tool 2 ( S24 ).

[0084] Next, the information processing device 6 generates a diagnosis result file based on the acquired data file, and stores the generated diagnosis result file in a memory or the like ( S25 ).

[0085] The machine monitoring system 1 repeats the operations of S21 to S25 described above by repeating the execution of the state monitoring / diagnosis process a predetermined number of times before terminating the state monitoring / diagnosis cycle.

[0086] Next, after the state monitoring / diagnosis cycle is completed, the user operates a display terminal (not shown) connected to the information processing device 6 ( S26 ).

[0087] Next, the display terminal reads out and displays the diagnosis result file stored in the memory, thereby enabling the user to browse the diagnosis result file ( S27 ).

[0088] Next, refer to Figure 5 The state monitoring / diagnosis cycle performed by the machine monitoring system 1 according to the first embodiment of the present invention will be described in more detail.

[0089] At time t1, the communication unit 20 sends a trigger signal to the information collection device 4 under the control of the control unit 19. In addition, the control unit 19 drives the spindle 24, the linear guide 25, the linear guide 26, the linear guide 27, the ball screw 28, the ball screw 29, and the ball screw 30, and starts the execution of the state monitoring / diagnosis process, and controls the spindle 24 to a suitable state and sets it to a state suitable for monitoring. As a result, the spindle 24 starts rotating, accelerates from a stopped state, runs at an equal speed, and then decelerates to a stop.

[0090] At time t2 , the information collecting device 4 starts acquiring vibration information data from the sensor 3 .

[0091] At time t3, the information collection device 4 ends the acquisition of the vibration information data from the sensor 3. Then, the information collection device 4 generates a data file (BRG) based on the acquired vibration information data and sends it to the information processing device 6 ( Figure 5 t3).

[0092] At time t4, the information collection device 4 transmits a data acquisition completion signal. In addition, the control unit 19 ends the execution of the state monitoring / diagnosis process by receiving the data acquisition completion signal.

[0093] At time t5, the communication unit 20 sends a trigger signal to the information collection device 4 under the control of the control unit 19. In addition, the control unit 19 starts the execution of the next state monitoring / diagnosis process, and controls the linear guide 25 and the ball screw 28 of the X table 21 to an appropriate state and sets them to a state suitable for monitoring. As a result, the linear guide 25 and the ball screw 28 start the translation action, accelerate from the stop state, run at an equal speed, and then decelerate to a stop.

[0094] At time t6 , the information collecting device 4 starts acquiring vibration information data from the sensor 3 .

[0095] At time t7, the information collection device 4 ends the acquisition of the vibration information data from the sensor 3. Then, the information collection device 4 generates a data file (BS / LG(X)) based on the acquired vibration information data and transmits it to the information processing device 6.

[0096] At time t8, the information collection device 4 transmits a data acquisition completion signal. In addition, the control unit 19 ends the execution of the state monitoring / diagnosis process by receiving the data acquisition completion signal.

[0097] At time t9, the communication unit 20 sends a trigger signal to the information collection device 4 under the control of the control unit 19. In addition, the control unit 19 starts the execution of the next state monitoring / diagnosis process, and controls the linear guide 26 and the ball screw 29 of the Y table 22 to a suitable state and sets them to a state suitable for monitoring. As a result, the linear guide 26 and the ball screw 29 start the translational movement, accelerate from the stop state, run at an equal speed, and then decelerate to a stop.

[0098] At time t10 , the information collecting device 4 starts acquiring vibration information data from the sensor 3 .

[0099] At time t11, the information collection device 4 ends the acquisition of the vibration information data from the sensor 3. Then, the information collection device 4 generates a data file (BS / LG(Y)) based on the acquired vibration information data and transmits it to the information processing device 6.

[0100] At time t12, the information collection device 4 transmits a data acquisition completion signal. In addition, the control unit 19 ends the execution of the state monitoring / diagnosis process by receiving the data acquisition completion signal.

[0101] At time t13, the communication unit 20 sends a trigger signal to the information collection device 4 under the control of the control unit 19. In addition, the control unit 19 starts the execution of the next state monitoring / diagnosis process, and controls the linear guide 27 and the ball screw 30 of the Z table 23 to a suitable state and sets them to a state suitable for monitoring. As a result, the linear guide 27 and the ball screw 30 start the translational action, accelerate from the stop state, run at an equal speed, and then decelerate to a stop.

[0102] At time t14 , the information collecting device 4 starts acquiring vibration information data from the sensor 3 .

[0103] At time t15, the information collection device 4 ends the acquisition of the vibration information data from the sensor 3. Then, the information collection device 4 generates a data file (BS / LG(Z)) based on the acquired vibration information data and transmits it to the information processing device 6.

[0104] At time t16, the information collection device 4 transmits a data acquisition completion signal. In addition, the control unit 19 ends the execution of the state monitoring / diagnosis process by receiving the data acquisition completion signal, and ends the state monitoring / diagnosis cycle.

[0105] Thus, according to the present embodiment, there are a sensor 3, a machine tool 2, an information collection device 4 and an information processing device 6, wherein the machine tool 2 has an actuator and a communication unit 20, the communication unit 20 sends a trigger signal when the actuator is in a suitable state in order to detect the operating state of the actuator through the sensor 3, when the information collection device 4 receives the trigger signal from the communication unit 20, it collects the data of the vibration information detected by the sensor 3 from the sensor 3, and sends the collected vibration information data, the information processing device 6 monitors the actuator based on the vibration information data received from the information collection device 4, thereby, the machine tool 2 side does not receive the data for diagnosing the machine tool 2, so that the diagnosis of the machine tool 2 with a simple structure can be performed.

[0106] Furthermore, according to the present embodiment, by driving the actuators to be monitored and diagnosed one by one, it is possible to perform a highly accurate diagnosis.

[0107] Furthermore, according to the present embodiment, by transmitting and receiving only a trigger signal and a data acquisition completion signal between the machine tool 2 and the information collecting device 4 , it is possible to make only minor corrections to the control program built into the machine tool 2 .

[0108] Furthermore, according to the present embodiment, in addition to the bearing 24 a , the linear guides 25 , 26 , and 27 and the ball screws 28 , 29 , and 30 are included in the monitoring targets, so that the machine tool 2 can be monitored in more detail.

[0109] In addition, in the present embodiment, the diagnosis result file is saved to the memory, but it is not limited to this, and the diagnosis result file can also be saved to a server on the network 5 or a locally deployed (on-premise) server. In addition, the diagnosis result file can also be saved to a local memory. In this case, since the diagnosis result file can be placed in the company's network, the risk of information leakage can be reduced.

[0110] Furthermore, in the present embodiment, the machine tool 2 is included in the machine equipment monitoring system 1 , but the present invention is not limited thereto, and the machine tool 2 may not be included in the machine equipment monitoring system.

[0111] (Second Embodiment)

[0112] The structure and configuration of the machine monitoring system according to the second embodiment of the present invention Figure 1 Because they are of the same structure, their description is omitted, and the Figure 1 The operation of the machine equipment monitoring system involved in this embodiment is explained with reference to the figure symbols.

[0113] <Operation of the machinery monitoring system>

[0114] The operation of the machine monitoring system 1 according to the second embodiment of the present invention will be described in detail.

[0115] First, refer to Figure 6 The operation of the machine monitoring system 1 according to the present embodiment will be described in detail.

[0116] At time t111, the communication unit 20 transmits a trigger signal to the information collecting device 4 under the control of the control unit 19. In addition, the control unit 19 drives only the main shaft 24.

[0117] At time t112, the control unit 19 starts the state monitoring / diagnosis process and controls the spindle 24 to an appropriate state suitable for monitoring. Thus, the spindle 24 accelerates from the stopped state, runs at the same speed, and then decelerates to a stop.

[0118] At time t113 , the information collecting device 4 starts acquiring vibration information data from the sensor 3 .

[0119] At time t114 , the information collecting device 4 finishes acquiring the vibration information data from the sensor 3 , and transmits the data file (BRG) to the information processing device 6 .

[0120] At time t115, the information collection device 4 transmits a data acquisition completion signal, and the communication unit 20 receives the data acquisition completion signal.

[0121] At time t116, the control unit 19 controls the main shaft 24 to a stopped state.

[0122] Next, refer to Figure 7 The other operations of the machine monitoring system 1 according to the present embodiment will be described in detail.

[0123] At time t211, the communication unit 20 transmits a trigger signal to the information collecting device 4 under the control of the control unit 19. In addition, the control unit 19 drives only the main shaft 24.

[0124] At time t212, the control unit 19 starts the state monitoring / diagnosis process and controls the spindle 24 to an appropriate state suitable for monitoring. Thus, the spindle 24 accelerates from the stopped state, runs at the same speed, and then decelerates to a stop.

[0125] At time t213 , the information collecting device 4 starts acquiring vibration information data from the sensor 3 .

[0126] At time t214 , the information collecting device 4 finishes acquiring the vibration information data from the sensor 3 , and transmits the data file (BRG) to the information processing device 6 .

[0127] At time t215, the control unit 19 stops the spindle 24 without waiting for the reception of the data acquisition completion signal from the communication unit 20. At this time, the control unit 19 stops the drive of the spindle 24 after a predetermined time set in advance has passed since the time when the control is started so that the spindle 24 is in a suitable state.

[0128] At time t216, the information collection device 4 transmits a data acquisition completion signal, and the communication unit 20 receives the data acquisition completion signal.

[0129] like Figure 7As shown, when the control unit 19 has obtained sufficient data for the state monitoring / diagnosis of the spindle 24 in the information collection device 4, the control unit 19 may stop the driving of the spindle 24 without waiting for the reception of the data acquisition completion signal from the communication unit 20. In addition, even in this case, the control unit 19 starts the execution of the next state monitoring / diagnosis process after waiting for the reception of the data acquisition completion signal from the communication unit 20.

[0130] As described above, according to the present embodiment, in addition to the effects of the first embodiment described above, by driving only the main shaft 24 to execute the state monitoring and diagnosis process, it is possible to diagnose the bearing 24 a with high accuracy.

[0131] Furthermore, according to the present embodiment, by stopping the driving of the actuator without waiting for the reception of the data acquisition completion signal, it is possible to achieve power saving.

[0132] In addition, in the present embodiment, the diagnosis result file is saved in the memory, but it is not limited to this, and the diagnosis result file can also be saved in the server on the network 5 or the locally deployed server. In addition, the diagnosis result file can also be saved in the local memory. In this case, since the diagnosis result file can be placed in the company network, the risk of information leakage can be reduced.

[0133] Furthermore, in the present embodiment, the machine tool 2 is included in the machine equipment monitoring system 1 , but the present invention is not limited thereto, and the machine tool 2 may not be included in the machine equipment monitoring system.

[0134] (Third Embodiment)

[0135] The structure and configuration of a machine monitoring system according to a third embodiment of the present invention Figure 1 Because they are of the same structure, their description is omitted, and the Figure 1 The operation of the machine equipment monitoring system involved in this embodiment is explained with reference to the figure symbols.

[0136] <Operation of the machinery monitoring system>

[0137] Reference Figure 8 The operation of the machine monitoring system 1 according to the third embodiment of the present invention will be described in detail.

[0138] At time t311, the communication unit 20 transmits a trigger signal to the information collecting device 4 under the control of the control unit 19. In addition, the control unit 19 drives only the linear guide 25 and the ball screw 28 of the X stage 21.

[0139] At time t312 , the information collecting device 4 starts acquiring vibration information data from the sensor 3 .

[0140] At time t313, the control unit 19 starts the state monitoring / diagnosis process and controls the linear guide 25 and the ball screw 28 to a suitable state for monitoring. Thus, the linear guide 25 and the ball screw 28 accelerate from a stopped state, run at an equal speed, and then decelerate to a stop.

[0141] At time t314 , the linear guide 25 and the ball screw 28 stop driving under the control of the control unit 19 .

[0142] At time t315 , the information collecting device 4 finishes acquiring the vibration information data from the sensor 3 , and transmits the data file (BS / LG) to the information processing device 6 .

[0143] At time t316, the information collection device 4 transmits a data acquisition completion signal, and the communication unit 20 receives the data acquisition completion signal.

[0144] Thus, according to this embodiment, in addition to the effects of the first embodiment described above, by driving only the linear guide 25 and the ball screw 28 to execute the state monitoring / diagnosis process, the linear guide 25 and the ball screw 28 can be diagnosed with high accuracy.

[0145] In addition, in the present embodiment, the diagnosis result file is saved in the memory, but it is not limited to this, and the diagnosis result file can also be saved in the server on the network 5 or the locally deployed server. In addition, the diagnosis result file can also be saved in the local memory. In this case, since the diagnosis result file can be placed in the company network, the risk of information leakage can be reduced.

[0146] Furthermore, in the present embodiment, the machine tool 2 is included in the machine equipment monitoring system 1 , but the present invention is not limited thereto, and the machine tool 2 may not be included in the machine equipment monitoring system.

[0147] (Fourth Embodiment)

[0148] <Configuration of machinery and equipment monitoring system>

[0149] First, refer to Fig. 9 The configuration of the machine monitoring system 1 according to the first embodiment of the present disclosure will be described in detail.

[0150] In addition, Fig. 9 In Figure 1 The same components are denoted by the same reference numerals, and their description is omitted.

[0151] The machine monitoring system 100 includes a machine tool 2 , a sensor 3 , an information collecting device 104 , and a server 105 .

[0152] The communication unit 20 operates under the control of the control unit 19 and transmits and receives signals to and from the information collection device 104 .

[0153] The sensor 3 detects vibrations of the bearing 24 a , the linear guide 25 , the linear guide 26 , the linear guide 27 , the ball screw 28 , the ball screw 29 , and the ball screw 30 , and outputs data of vibration information of the detected vibrations to the information collecting device 104 .

[0154] The information collection device 104 stores a diagnostic program and is connected to the server 105 via the network 5. When the control unit 19 executes the state monitoring / diagnosis process, the information collection device 104 obtains the vibration information data from the sensor 3. The information collection device 104 generates a data file based on the obtained vibration information data, and executes the stored diagnostic program to generate a diagnostic result file based on the data file. The information collection device 104 saves the generated diagnostic result file to the server 105 via the network 5.

[0155] The server 105 stores the diagnosis result file transmitted from the information collecting device 4 .

[0156] The operation of the machine monitoring system 100 is similar to that of the machine monitoring system 100 except that the server 105 is provided instead of the information processing device 6. Figure 4 and Figure 5 The same operation is performed, so the description thereof is omitted.

[0157] Thus, according to this embodiment, in addition to the effects of the above-mentioned first embodiment, by generating a diagnostic result file by the information collection device 104, the capacity of data sent from the network 5 to the server 105 can be reduced compared to the first embodiment, and the bandwidth of the line of the network 5 can be avoided.

[0158] In addition, in the present embodiment, the diagnosis result file is saved in the server 105 on the network 5, but it is not limited thereto, and the diagnosis result file can also be saved in a locally deployed server or storage. In addition, the diagnosis result file can also be saved in a local storage. In this case, since the diagnosis result file can be placed in the company's network, the risk of information leakage can be reduced.

[0159] Furthermore, in the present embodiment, the machine tool 2 is included in the machine equipment monitoring system 100 , but the present invention is not limited thereto, and the machine tool 2 may not be included in the machine equipment monitoring system.

[0160] (Fifth Embodiment)

[0161] A fifth embodiment of the present invention relates to a machine monitoring system. Figure 1 Because they are of the same structure, their description is omitted, and the Figure 1The operation of the machine equipment monitoring system involved in this embodiment is explained with reference to the figure symbols.

[0162] <Operation of the machinery monitoring system>

[0163] First, after the communication unit 20 of the machine tool 2 starts the normal cycle and starts the execution of the processing process in the control unit 19 of the machine tool 2, during the processing action using the spindle 24, linear guide 25, linear guide 26, linear guide 27, ball screw 28, ball screw 29 or ball screw 30, when the spindle 24, linear guide 25, linear guide 26, linear guide 27, ball screw 28, ball screw 29 or ball screw 30 becomes a suitable state, a trigger signal (S31) is sent to the information collection device 4 under the control of the control unit 19.

[0164] Next, after receiving the trigger signal, the information collection device 4 starts to obtain vibration information data from the sensor 3 and generates a data file ( S32 ).

[0165] Next, the information collecting device 4 transmits the generated data file to the information processing device 6 ( S33 ).

[0166] Next, information collecting device 4 transmits a data acquisition completion signal to machine tool 2 ( S34 ).

[0167] Next, the information processing device 6 generates a diagnosis result file based on the acquired data file, and stores the generated diagnosis result file in the memory (S35).

[0168] Next, the display terminal reads out and displays the diagnosis result file stored in the memory, thereby enabling the user to browse the diagnosis result file (S36).

[0169] Thus, according to this embodiment, in addition to the effects of the first embodiment described above, by eliminating the need to execute a state monitoring / diagnosis cycle different from a normal cycle, a cycle for diagnosis can be eliminated, thereby enabling state monitoring and diagnosis to be performed without impairing the productivity of the machine tool 2 .

[0170] In addition, in the present embodiment, the diagnosis result file is saved in the memory, but it is not limited to this, and the diagnosis result file can also be saved in the server on the network 5 or the locally deployed server. In addition, the diagnosis result file can also be saved in the local memory. In this case, since the diagnosis result file can be placed in the company network, the risk of information leakage can be reduced.

[0171] Furthermore, in the present embodiment, the machine tool 2 is included in the machine equipment monitoring system 1 , but the present invention is not limited thereto, and the machine tool 2 may not be included in the machine equipment monitoring system.

[0172] (Sixth Embodiment)

[0173] In the first to fifth embodiments, the abnormality diagnosis of the machine tool 2 is performed by detecting the vibration of the actuator by the sensor 3 (first sensor) which is an acceleration sensor, but the sensor used for the abnormality diagnosis of the machine tool 2 is not limited to the acceleration sensor. It is also possible to use a sensor other than the acceleration sensor to detect the operating state of the actuator of the machine tool 2 and perform the abnormality diagnosis of the machine tool 2. Such a configuration is described in the sixth embodiment.

[0174] <Configuration of machinery and equipment monitoring system>

[0175] Reference Fig.11 The configuration of the machine monitoring system 200 according to the sixth embodiment of the present disclosure will be described in detail. Fig.11 In Figure 1 The same components are denoted by the same reference numerals, and their description is omitted.

[0176] The machine monitoring system 200 includes a machine tool 2 , sensors 3 a , 3 b , 3 c , and 3 d , an information collecting device 4 , an information processing device 6 , and an information collecting device 201 .

[0177] The machine tool 2 includes a control unit 19 , a communication unit 20 , an X table 21 , a Y table 22 , a Z table 23 , a spindle 24 , a linear guide 25 , a linear guide 26 , a linear guide 27 , a ball screw 28 , a ball screw 29 , a ball screw 30 , sensors 31 a , 31 b , 31 c , and a sensor 32 .

[0178] The sensor 31a is provided on or near the body of the linear guide 25 and the ball screw 28. The sensor 31a is a current sensor that detects a current value or a temperature sensor that detects a temperature. In addition, the sensor 31a may be a sensor that can detect a current value and a temperature (in this case, two sensors 31a may be provided, one of which detects a current value and the other detects a temperature). The sensor 31b is provided on or near the body of the linear guide 26 and the ball screw 29. The sensor 31b is a current sensor that detects a current value or a temperature sensor that detects a temperature. In addition, the sensor 31b may be a sensor that can detect a current value and a temperature (in this case, two sensors 31b may be provided, one of which detects a current value and the other detects a temperature). The sensor 31c is provided on or near the body of the linear guide 27 and the ball screw 30. The sensor 31c is a current sensor that detects a current value or a temperature sensor that detects a temperature. In addition, the sensor 31c may be a sensor capable of detecting a current value and a temperature (in this case, two sensors 31c may be provided, one of which detects a current value and the other detects a temperature). The sensors 31a, 31b, and 31c output the data of the detected current value or (and) temperature to the information aggregation device 201. In the following description, the sensors 31a, 31b, and 31c are sometimes referred to as the sensor 31 (second sensor).

[0179] The sensor 32 (third sensor) is provided on or near the main body of the main shaft 24. The sensor 32 is a rotation speed sensor that detects the rotation speed of the main shaft 24. The sensor 32 outputs data of the detected rotation speed to the information collection device 201.

[0180] The information collecting device 4 generates a data file based on the acquired vibration information data, and transmits the generated data file to the information collecting device 201 .

[0181] The information aggregation device 201 is connected to the information processing device 6 via the network 5. The information aggregation device 201 is, for example, a PLC (Programmable logic controller). The information aggregation device 201 has a timer that sends out time information. The information aggregation device 201 obtains data on current value and / or temperature from the sensor 31 and obtains data on rotation speed from the sensor 32 by performing a summary control on the machine tool 2. The information aggregation device 201 assigns time information to the data file received from the information collection device 4, and assigns time information to the summary data related to the current value and / or temperature and rotation speed obtained from the sensors 31 and 32. The information aggregation device 201 sends the data file and the summary data assigned with the time information to the information processing device 6 via the network 5.

[0182] When receiving the data file (including time information) and summary data (including time information) from the information summary device 201 via the network 5 , the information processing device 6 executes the diagnostic program stored in the information processing device 6 and generates a diagnostic result file based on the data file and summary data.

[0183] <Operation of the machinery monitoring system>

[0184] Reference Fig.11 and Fig.12 The operation of the machine monitoring system 200 according to the sixth embodiment of the present disclosure will be described in detail.

[0185] First, the information collection device 201 sends a first trigger signal (S41) to the machine tool 2, and sends a second trigger signal (S42) to the information collection device 4. When the machine tool 2 receives the first trigger signal, the control unit 19 of the machine tool 2 starts a state monitoring / diagnosis cycle, and starts the execution of the state monitoring / diagnosis process, and controls the spindle 24, the linear guide 25, the linear guide 26, the linear guide 27, the ball screw 28, the ball screw 29, and the ball screw 30 to a suitable state and set them to a state suitable for monitoring.

[0186] When receiving the second trigger signal, the information collecting device 4 starts acquiring vibration information data from the sensor 3 and generates a data file ( S43 ).

[0187] Next, information control device 201 performs overall control of machine tool 2 , obtains data on current value and / or temperature from sensor 31 of machine tool 2 , and obtains data on rotation speed from sensor 32 of machine tool 2 ( S44 ).

[0188] Next, the information collecting device 4 transmits the generated data file to the information aggregating device 201 (S45).

[0189] Next, information collecting device 4 transmits a data acquisition completion signal to machine tool 2 ( S46 ).

[0190] Next, the information aggregation device 201 transmits the data file transmitted from the information collection device 4 and the aggregation data on the current value and / or temperature and the rotation speed transmitted from the machine tool 2 to the information processing device 6 ( S47 ).

[0191] Next, the information processing device 6 generates a diagnosis result file based on the acquired (received) data file and summary data, and stores the generated diagnosis result file in the memory (S48).

[0192] Next, the display terminal reads out and displays the diagnosis result file stored in the memory, thereby enabling the user to browse the diagnosis result file (S49).

[0193] Next, refer to Fig.13 The operation of the machine monitoring system 200 according to the sixth embodiment of the present disclosure will be described in more detail. Fig.13 The information collection device 201 obtains the data of the current value and the temperature, but does not obtain the data of the rotation speed. Fig.13 The case where only the ball screw 28 of the X stage 21 is in motion is shown.

[0194] At time t411 , the information management device 201 transmits a trigger signal (three arrows extending diagonally downward to the right) to the machine tool 2 and the information collection device 4 .

[0195] At time t412, the machine tool 2 receives a trigger signal from the information collection device 201, and the sensor 31 starts to obtain the current value and temperature data. After that, the information collection device 201 obtains the current value and temperature data from the machine tool 2 (sensor 31). In addition, at time t412, the information collection device 4 receives a trigger signal from the information collection device 201 and starts to obtain the vibration information data from the sensor 3.

[0196] At time t413, the ball screw 28 of the X table 21 of the machine tool 2 starts a translation motion (one reciprocating motion consisting of one outward motion and one return motion).

[0197] At time t414, the ball screw 28 of the X table 21 of the machine tool 2 ends the translation action (one reciprocating action). In addition, at time t414, the information collection device 201 ends the acquisition of the current value and temperature data from the sensor 31. Furthermore, at time t414, the information collection device 4 ends the acquisition of the vibration information data from the sensor 3, generates a data file based on the acquired vibration information data, and transmits the generated data file to the information collection device 201.

[0198] At time t415, the information aggregation device 201 starts data aggregation processing to aggregate the aggregate data on current value and temperature acquired from the sensor 31 and the data file acquired from the information collection device 4. In the data aggregation processing, the aggregate data and the data file are synchronized based on the time information of the aggregate data and the time information of the data file.

[0199] At time t416, the information integration device 201 ends the data integration process and transmits the data file integrated by the data integration process and the summary data to the information processing device 6.

[0200] At time t417, the information processing device 6 starts the diagnostic process based on the acquired data file and summary data.

[0201] At time t418, the information processing device 6 ends the diagnostic process.

[0202] Thus, according to the present embodiment, in addition to the effects of the first embodiment described above, the vibration information data and summary data (current value, temperature, and rotation speed data) of the data file can be used to diagnose the machine tool 2, so that a more accurate diagnosis can be performed. In addition, according to the present embodiment, since the detection data of the sensor 3, the detection data of the sensor 31, and the detection data of the sensor 32 can be integrated by the information summary device 201 and then sent to the network 5 and the information processing device 6 through one transmission line, it is advantageous in terms of the efficiency or security of data transmission.

[0203] In the present embodiment, the machine tool 2 is included in the machine monitoring system 200 , but the machine tool 2 may not be included in the machine monitoring system. When the machine tool 2 is not included in the machine monitoring system, the sensors 31 and 32 are provided outside the machine tool 2 .

[0204] In the present embodiment, the information collection device 201 acquires data on the current value, temperature, and rotation speed, but may acquire at least one of the current value, temperature, and rotation speed.

[0205] (Seventh Embodiment)

[0206] In the present embodiment, the acceleration sensor and sensors other than the acceleration sensor are also used to perform abnormality diagnosis of the machine tool 2. In the present embodiment, the information collection device 4 performs data integration.

[0207] <Configuration of machinery and equipment monitoring system>

[0208] Reference Fig.14 The configuration of the machine monitoring system 300 according to the seventh embodiment of the present disclosure will be described in detail. Fig.14 In Figure 1 The same components are denoted by the same reference numerals, and their description is omitted.

[0209] The machine monitoring system 300 includes a machine tool 2 , sensors 3 a , 3 b , 3 c , and 3 d , an information collecting device 4 , an information processing device 6 , and an information collecting device 201 .

[0210] The machine tool 2 includes a control unit 19 , a communication unit 20 , an X table 21 , a Y table 22 , a Z table 23 , a spindle 24 , a linear guide 25 , a linear guide 26 , a linear guide 27 , a ball screw 28 , a ball screw 29 , a ball screw 30 , and sensors 31 and 32 .

[0211] The sensor 31a is provided on or near the body of the linear guide 25 and the ball screw 28. The sensor 31a is a current sensor that detects a current value or a temperature sensor that detects a temperature. In addition, the sensor 31a may be a sensor that can detect a current value and a temperature (in this case, two sensors 31a may be provided, one of which detects a current value and the other detects a temperature). The sensor 31b is provided on or near the body of the linear guide 26 and the ball screw 29. The sensor 31b is a current sensor that detects a current value or a temperature sensor that detects a temperature. In addition, the sensor 31b may be a sensor that can detect a current value and a temperature (in this case, two sensors 31a may be provided, one of which detects a current value and the other detects a temperature). The sensor 31c is provided on or near the body of the linear guide 27 and the ball screw 30. The sensor 31c is a current sensor that detects a current value or a temperature sensor that detects a temperature. In addition, the sensor 31c may be a sensor capable of detecting a current value and a temperature (in this case, two sensors 31a may be provided, one of which detects a current value and the other detects a temperature). The sensors 31a, 31b, and 31c output the data of the detected current value or (and) temperature to the information summary device 201. In the following description, the sensors 31a, 31b, and 31c are sometimes referred to as sensors 31.

[0212] The sensor 32 is provided on the main body of the main shaft 24 or in the vicinity thereof. The sensor 32 is a rotation speed sensor that detects the rotation speed of the main shaft 24. The sensor 32 outputs data of the detected rotation speed to the information collection device 201.

[0213] The information aggregation device 201 is, for example, a PLC. The information aggregation device 201 acquires data on current value and / or temperature from the sensor 31 and data on rotation speed from the sensor 32 by performing aggregate control on the machine tool 2. The information aggregation device 201 transmits the acquired aggregate data on current value and / or temperature and rotation speed to the information collection device 4.

[0214] The information collection device 4 is connected to the information processing device 6 via the network 5. The information collection device 4 has a timer for issuing time information. The information collection device 4 generates a data file based on the data of the vibration information obtained from the sensor 3, and assigns time information to the generated data file. The information collection device 4 assigns time information to the summary data received from the information summary device 201. The information collection device 4 sends the received summary data (including time information) and the generated data file (including time information) to the information processing device 6 via the network 5.

[0215] When receiving the data file and summary data from the information collecting device 4 via the network 5 , the information processing device 6 executes a diagnostic program stored in the information processing device 6 and generates a diagnostic result file based on the data file and summary data.

[0216] <Operation of the machinery monitoring system>

[0217] Reference Fig.15 and Fig.16 The operation of the machine monitoring system 300 according to the seventh embodiment of the present disclosure will be described in detail.

[0218] First, the information collection device 201 sends a first trigger signal (S51) to the machine tool 2, and sends a second trigger signal (S52) to the information collection device 4. When the machine tool 2 receives the first trigger signal, the control unit 19 of the machine tool 2 starts a state monitoring / diagnosis cycle, and starts the execution of the state monitoring / diagnosis process, and controls the spindle 24, the linear guide 25, the linear guide 26, the linear guide 27, the ball screw 28, the ball screw 29, and the ball screw 30 to a suitable state and set them to a state suitable for monitoring.

[0219] When receiving the second trigger signal, the information collecting device 4 starts acquiring vibration information data from the sensor 3 and generates a data file ( S53 ).

[0220] Next, information control device 201 performs overall control of machine tool 2 , obtains data on current value and / or temperature from sensor 31 of machine tool 2 , and obtains data on rotation speed from sensor 32 of machine tool 2 ( S54 ).

[0221] Next, the information aggregation device 201 transmits the acquired data on the current value and / or temperature and the aggregate data on the rotation speed to the information collection device 4 ( S55 ).

[0222] After completing the acquisition of vibration information data, information collecting device 4 transmits a data acquisition completion signal to machine tool 2 ( S56 ).

[0223] Next, the information collecting device 4 transmits the generated data file and the summary data transmitted from the information summarizing device 201 to the information processing device 6 (S57).

[0224] Next, the information processing device 6 generates a diagnosis result file based on the received (acquired) data file and summary data, and stores the generated diagnosis result file in the memory ( S58 ).

[0225] Next, the display terminal reads out and displays the diagnosis result file stored in the memory, thereby enabling the user to browse the diagnosis result file (S59).

[0226] Next, refer to Fig.16 The operation of the machine monitoring system 300 according to the seventh embodiment of the present disclosure will be described in more detail. Fig.16 The information collection device 201 obtains the data of the current value and the temperature, but does not obtain the data of the rotation speed. Fig.16 The case where only the ball screw 28 of the X stage 21 is in motion is shown.

[0227] At time t511 , the information management device 201 transmits a trigger signal (three arrows extending diagonally downward to the right) to the machine tool 2 and the information collection device 4 .

[0228] At time t512, the machine tool 2 receives a trigger signal from the information collection device 201, and the sensor 31 starts to obtain the current value and temperature data. After that, the information collection device 201 obtains the current value and temperature data from the machine tool 2 (sensor 31). In addition, at time t512, the information collection device 4 starts to obtain the vibration information data from the sensor 3 by receiving the trigger signal from the information collection device 201.

[0229] At time t513, the ball screw 28 of the X table 21 of the machine tool 2 starts a translation motion (one reciprocating motion consisting of one outward motion and one return motion).

[0230] At time t514, the ball screw 28 of the X table 21 of the machine tool 2 ends the translation action (one reciprocating action). Also, at time t514, the information collection device 201 ends the acquisition of the current value and temperature data from the sensor 31, and transmits the acquired summary data related to the current value and temperature to the information collection device 4. Furthermore, at time t514, the information collection device 4 ends the acquisition of the vibration information data from the sensor 3, and generates a data file.

[0231] At time t515, the information collection device 4 starts data integration processing to integrate the summary data obtained from the information collection device 201 and the data file generated by the information collection device 4. In the data integration processing, the summary data and the data file are synchronized based on the time information of the summary data and the time information of the data file.

[0232] At time t516 , the information collection device 4 ends the data integration process and transmits the data file and summary data integrated by the data integration process to the information processing device 6 .

[0233] At time t517, the information processing device 6 starts the diagnostic process based on the acquired data file and summary data.

[0234] At time t518, the information processing device 6 ends the diagnostic process.

[0235] Thus, according to the present embodiment, in addition to the effects of the first embodiment described above, the vibration information data and summary data (current value, temperature, and rotation speed data) of the data file can be used to diagnose the machine tool 2, so that a more accurate diagnosis can be performed. In addition, according to the present embodiment, the detection data of the sensor 3, the detection data of the sensor 31, and the detection data of the sensor 32 can be integrated by the information collection device 4 and then sent to the network 5 and the information processing device 6 through one transmission line, so it is advantageous in terms of the efficiency or security of data transmission.

[0236] In the present embodiment, the machine tool 2 is included in the machine monitoring system 300 , but the machine tool 2 may not be included in the machine monitoring system. When the machine tool 2 is not included in the machine monitoring system, the sensors 31 and 32 are provided outside the machine tool 2 .

[0237] In the present embodiment, the information collection device 201 acquires data on the current value, temperature, and rotation speed, but may acquire at least one of the current value, temperature, and rotation speed.

[0238] In the first to seventh embodiments described above, the spindle 24, the linear guides 25 to 27, and the ball screws 28 to 30 are diagnosed, but the objects of diagnosis are not limited thereto. For example, actuators other than the spindle 24, the linear guides 25 to 27, and the ball screws 28 to 30 may be diagnosed.

[0239] In addition, in the above-mentioned first to seventh embodiments, the vibration, current value, temperature and rotational speed of the actuator are detected by sensors 3, 31, and 32, but the operating status of the actuator other than the vibration, current value, temperature and rotational speed can also be detected by sensors other than sensors 3, 31, and 32 and used in the diagnosis of the machine tool 2 (mechanical equipment).

[0240] In addition, the first to seventh embodiments described above can be appropriately combined as long as they are not contradictory. Fig. 9 The machine monitoring system 100 includes sensors 31 ( 31 a to 31 c ) and 32 and an information collection device 201 . In this case, the information collection device 104 performs diagnosis and monitoring of the machine tool 2 based on the detection data of the sensors 3 , 31 , and 32 .

[0241] Although specific embodiments are described above, the embodiments are merely illustrative and are not intended to limit the scope of the present invention. The apparatus and method described in this specification can be embodied in a manner other than that described above. In addition, the embodiments described above can be appropriately omitted, replaced, and changed without departing from the scope of the present invention. The methods in which the omissions, replacements, and changes are made are included in the scope of the schemes described in the claims and their equivalents, and belong to the technical scope of the present invention.

[0242] Description of Reference Numerals

[0243] 1. Mechanical equipment monitoring system

[0244] 2Machine Tools

[0245] 3Sensor (first sensor)

[0246] 4Information Collection Device

[0247] 5. Network

[0248] 6Information processing device

[0249] 19 Control Department

[0250] 20 Ministry of Communications

[0251] 21X workbench

[0252] 22Y workbench

[0253] 23Z workbench

[0254] 24 spindles

[0255] 24a bearing

[0256] 25 Linear guides

[0257] 26 Linear guides

[0258] 27 Linear guides

[0259] 28 Ball Screw

[0260] 29 Ball Screw

[0261] 30 Ball Screw

[0262] 31 sensor (second sensor)

[0263] 32 sensor (third sensor)

[0264] 100 Mechanical equipment monitoring system

[0265] 104 Information Collection Device

[0266] 105 servers.

Claims

1. A mechanical equipment monitoring system, characterized in that: have: sensor; A mechanical device including an actuator and a communication unit for detecting the operating state of the actuator by the sensor and transmitting a trigger signal when the actuator is in a suitable state; an information collecting device that collects, from the sensor, operating state data indicating the operating state detected by the sensor, when receiving the trigger signal from the communication unit; as well as An information processing device monitors the actuator based on the operating status data collected by the information collecting device.

2. The machine equipment monitoring system according to claim 1, wherein: The appropriate state is The state in which the actuator operates at an equal speed within a specified period, the state in which the actuator accelerates from a stop and operates at an equal speed and then decelerates to a stop, the state in which the variation of the load applied to the actuator is less than a specified value, or the state in which the variation of the temperature of the actuator is less than a specified value.

3. The mechanical equipment monitoring system according to claim 1 or claim 2, wherein: The mechanical equipment A control unit is provided for controlling the actuator so that the actuator is in the appropriate state.

4. The machine equipment monitoring system according to claim 3, wherein: The information collection device When the collection of the operating status data is completed, a completion notification is sent to the mechanical device, The communication unit receiving the completion notification, The control unit When the completion notification is received through the communication unit, control to bring the actuator into the appropriate state is stopped.

5. The machine equipment monitoring system according to claim 3, wherein: The control unit After a predetermined time has elapsed from the time when the control is started so that the actuator is in the appropriate state, the control so that the actuator is in the appropriate state is stopped.

6. The machine equipment monitoring system according to claim 3, wherein: The mechanical equipment The actuator has a plurality of types, The control unit Control is performed so that only one of the plurality of types of actuators is brought into the appropriate state, and control is performed so that the operations of actuators other than the one actuator are stopped.

7. The machine equipment monitoring system according to claim 6, wherein: The actuator comprises At least one of a bearing, a ball screw, and a linear guide.

8. The mechanical equipment monitoring system according to claim 1 or claim 2, wherein: The communication unit The trigger signal is transmitted when the actuator reaches the appropriate state during a machining operation using the actuator.

9. The mechanical equipment monitoring system according to claim 1 or claim 2, wherein: A storage device is provided for storing the monitoring result of the actuator by the information processing device.

10. The mechanical equipment monitoring system according to claim 1 or claim 2, wherein: The sensor is an acceleration sensor that detects vibration of the actuator, and the operation status data is vibration data of the actuator.

11. The mechanical equipment monitoring system according to claim 1 or claim 2, wherein: The sensor is a first sensor that detects vibration of the actuator, The mechanical equipment monitoring system also has: a second sensor that detects a current value and / or a temperature of the actuator; and an information summarizing device, which obtains the detection data of the second sensor, The information aggregation device obtains the detection data of the first sensor from the information collection device, synchronizes the detection data of the first sensor with the detection data of the second sensor, and then sends the data to the information processing device. The information processing device monitors the actuator based on the detection data of the first sensor and the detection data of the second sensor.

12. The machine equipment monitoring system according to claim 11, wherein: The machine monitoring system further includes a third sensor for detecting a rotation speed of the actuator. The information aggregation device obtains the detection data of the third sensor, synchronizes the detection data of the first sensor, the detection data of the second sensor, and the detection data of the third sensor, and then sends them to the information processing device. The information processing device monitors the actuator based on detection data of the first sensor, detection data of the second sensor, and detection data of the third sensor.

13. The mechanical equipment monitoring system according to claim 1 or claim 2, wherein: The sensor is a first sensor that detects vibration of the actuator, The mechanical equipment monitoring system also has: a second sensor that detects a current value and / or a temperature of the actuator; and an information summarizing device, which obtains the detection data of the second sensor, The information collection device obtains the detection data of the second sensor from the information aggregation device, synchronizes the detection data of the first sensor with the detection data of the second sensor, and then sends them to the information processing device. The information processing device monitors the actuator based on the detection data of the first sensor and the detection data of the second sensor.

14. The machine equipment monitoring system according to claim 11, wherein: The machine monitoring system further includes a third sensor for detecting a rotation speed of the actuator. The information aggregation device obtains the detection data of the third sensor, synchronizes the detection data of the second sensor with the detection data of the third sensor, and then sends the data to the information collection device. The information collection device synchronizes the detection data of the first sensor, the detection data of the second sensor, and the detection data of the third sensor and sends them to the information processing device. The information processing device monitors the actuator based on detection data of the first sensor, detection data of the second sensor, and detection data of the third sensor.

15. A mechanical equipment monitoring system, characterized in that: have: sensor; A mechanical device including an actuator and a communication unit for detecting the operating state of the actuator by the sensor and transmitting a trigger signal when the actuator is in a suitable state; as well as An information collection device collects, from the sensor, operation status data indicating the operation status detected by the sensor, when receiving the trigger signal from the communication unit, and monitors the actuator based on the collected operation status data.

16. A mechanical equipment monitoring system for monitoring the state of a mechanical equipment, wherein the mechanical equipment comprises an actuator and a communication unit, wherein the communication unit sends a trigger signal when the actuator is in a suitable state, wherein the mechanical equipment monitoring system comprises: a sensor for detecting an operating state of the actuator; an information collecting device that collects, from the sensor, operating state data indicating the operating state detected by the sensor, when receiving the trigger signal from the communication unit; as well as An information processing device monitors the actuator based on the operating status data acquired from the information collecting device.

17. A mechanical equipment monitoring system for monitoring the state of a mechanical equipment, wherein the mechanical equipment comprises an actuator and a communication unit, wherein the communication unit sends a trigger signal when the actuator is in a suitable state, wherein the mechanical equipment monitoring system comprises: a sensor that detects an operating state of the actuator; and An information collection device collects, from the sensor, operation status data indicating the operation status detected by the sensor, when receiving the trigger signal from the communication unit, and monitors the actuator based on the collected operation status data.

18. A method for monitoring a mechanical device, which is a method for monitoring a mechanical device in a mechanical device monitoring system, wherein the mechanical device monitoring system comprises: a sensor; a mechanical device having an actuator and a communication unit; an information collection device; and an information processing device, wherein the method for monitoring a mechanical device is characterized in that: a signal sending step, in order to detect the operating state of the actuator through the sensor, when the actuator is in a suitable state, the communication unit sends a trigger signal to the information collection device; a data collection step, wherein the information collection device collects, from the sensor, operation status data indicating the operation status detected by the sensor when the trigger signal is received; as well as In the monitoring step, the information processing device monitors the actuator based on the operating status data collected by the information collecting device.

19. The machine equipment monitoring method according to claim 18, wherein: The appropriate state is The state in which the actuator operates at an equal speed within a specified period, the state in which the actuator accelerates from a stop and operates at an equal speed and then decelerates to a stop, the state in which the variation of the load applied to the actuator is less than a specified value, or the state in which the variation of the temperature of the actuator is less than a specified value.

20. The machine equipment monitoring method according to claim 18 or claim 19, wherein: The mechanical device includes a control unit, The machine monitoring method further includes a control step in which the control unit controls the actuator so that the actuator is in the appropriate state.

21. The machine equipment monitoring method according to claim 20, wherein: Also features: a notification sending step, wherein the information collecting device sends a completion notification to the mechanical equipment when the information collecting device completes the collection of the operating status data; a receiving step, wherein the communication unit receives the completion notification; as well as In the stopping step, when the communication unit receives the completion notification, the control unit stops controlling the actuator so that the actuator is in the appropriate state.

22. The machine equipment monitoring method according to claim 20, wherein: There is also a stopping step in which the control unit stops controlling the actuator to be in the appropriate state after a predetermined time has passed since the control unit started controlling the actuator to be in the appropriate state.

23. The machine equipment monitoring method according to claim 20, wherein: In the control step, The control unit of the mechanical device including the plurality of types of actuators performs control so that only one of the plurality of types of actuators is in the appropriate state, and performs control so that the operations of actuators other than the one actuator are stopped.

24. The machine equipment monitoring method according to claim 23, wherein: The actuator comprises At least one of a bearing, a ball screw, and a linear guide.

25. The method for monitoring mechanical equipment according to claim 18 or claim 19, wherein: In the signal sending step, When the actuator reaches the appropriate state during a processing operation of the machine using the actuator, the communication unit transmits the trigger signal to the information collecting device.

26. The method for monitoring mechanical equipment according to claim 18 or claim 19, wherein: The method includes a step of storing the monitoring result of the actuator by the information processing device in a storage device.

27. The method for monitoring mechanical equipment according to claim 18 or claim 19, wherein: The sensor is an acceleration sensor that detects vibration of the actuator, and the operation status data is vibration data of the actuator.

28. The method for monitoring mechanical equipment according to claim 18 or claim 19, wherein: The sensor is a first sensor that detects vibration of the actuator, The mechanical equipment monitoring system also has: a second sensor that detects a current value and / or a temperature of the actuator; and an information summarizing device, which obtains the detection data of the second sensor, The mechanical equipment monitoring method further comprises: an acquisition step, wherein the information aggregation device acquires the detection data of the first sensor from the information collection device; and a data transmission step, wherein the information aggregation device synchronizes the detection data of the first sensor with the detection data of the second sensor and transmits the synchronized data to the information processing device; In the monitoring step, the information processing device monitors the actuator based on the detection data of the first sensor and the detection data of the second sensor.

29. The machine equipment monitoring method according to claim 28, wherein: The machine monitoring system further includes a third sensor for detecting a rotation speed of the actuator. In the obtaining step, The information aggregation device obtains the detection data of the third sensor, In the data sending step, The detection data of the first sensor, the detection data of the second sensor, and the detection data of the third sensor are synchronized at all times and then sent to the information processing device. In the monitoring step, the information processing device monitors the actuator based on detection data of the first sensor, detection data of the second sensor, and detection data of the third sensor.

30. The method for monitoring mechanical equipment according to claim 18 or claim 19, wherein: The sensor is a first sensor that detects vibration of the actuator, The mechanical equipment monitoring system also has: a second sensor that detects a current value and / or a temperature of the actuator; and an information summarizing device, which obtains the detection data of the second sensor, The mechanical equipment monitoring method further comprises: an acquisition step, wherein the information collection device acquires the detection data of the second sensor from the information aggregation device; and a data sending step, wherein the detection data of the first sensor and the detection data of the second sensor are synchronized at all times and then sent to the information processing device; In the monitoring step, the information processing device monitors the actuator based on the detection data of the first sensor and the detection data of the second sensor.

31. The method for monitoring a mechanical device according to claim 30, wherein: The machine monitoring system further includes a third sensor for detecting a rotation speed of the actuator. In the obtaining step, The information aggregation device obtains the detection data of the third sensor, In the data sending step, The information aggregation device sends the detection data of the second sensor and the detection data of the third sensor to the information collection device, and the information collection device synchronizes the detection data of the first sensor, the detection data of the second sensor, and the detection data of the third sensor and sends them to the information processing device. In the monitoring step, the information processing device monitors the actuator based on detection data of the first sensor, detection data of the second sensor, and detection data of the third sensor.

32. A method for monitoring mechanical equipment, which is a method for monitoring mechanical equipment of a mechanical equipment monitoring system, wherein the mechanical equipment monitoring system comprises: a sensor; a mechanical equipment having an actuator and a communication unit; and an information collection device, wherein the method for monitoring mechanical equipment comprises: a signal sending step of sending a trigger signal from the communication unit to the information collecting device when the actuator is in a suitable state in order to detect the operating state of the actuator through the sensor; and In a monitoring step, when the information collecting device receives the trigger signal, the information collecting device collects operating status data indicating the operating status detected by the sensor from the sensor, and monitors the actuator based on the collected operating status data.

33. A mechanical equipment monitoring method, which is a mechanical equipment monitoring method of a mechanical equipment monitoring system for monitoring the state of mechanical equipment, wherein the mechanical equipment monitoring system has a sensor, an information collection device, and an information processing device, and the mechanical equipment has an actuator and a communication unit, and the communication unit sends a trigger signal when the actuator is in a suitable state, and the mechanical equipment monitoring method is characterized by having: a data sending step, wherein when the information collecting device receives the trigger signal from the communication unit, the information collecting device collects the operating status data indicating the operating status of the actuator detected by the sensor from the sensor, and sends the collected operating status data to the information processing device; and In the monitoring step, the information processing device monitors the actuator based on the received operating status data.

34. A mechanical equipment monitoring method, which is a mechanical equipment monitoring method of a mechanical equipment monitoring system that monitors the state of mechanical equipment, wherein the mechanical equipment monitoring system has a sensor and an information collection device, and the mechanical equipment has an actuator and a communication unit, and the communication unit sends a trigger signal when the actuator is in a suitable state, and the mechanical equipment monitoring method is characterized in that: When the information collection device receives the trigger signal from the communication unit, it collects operating status data indicating the operating status of the actuator detected by the sensor from the sensor, and monitors the actuator based on the collected operating status data.

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