TWI745121B - Detection system and detection method - Google Patents

Abstract

A detection method is suitable for a detection system, which includes a row of drilling equipment and a vibration sensor. The row of drilling equipment includes a plurality of drill shafts and a control unit. The detection method includes: setting the vibration sensor on the drilling equipment to detect the vibration generated by each drill shaft when moving; operating a diagnosis mode by the control unit to sequentially control each A drill spindle performs a back and forth movement; the control unit receives a sensing signal from the vibration sensor indicating the magnitude of the vibration; and the control unit determines each drill spindle according to the received sensing signal Is it working properly.

Description

Detection system and detection method

The invention relates to a detection system and a detection method, in particular to a detection system and a detection method for pre-diagnosing the health of drilling equipment.

The conventional drilling equipment usually includes an electric motor, multiple sets of transmission gears, multiple drilling spindles, and multiple cylinders, and is often used in the process of simultaneous processing of multiple holes. The connection and power transmission between the various elements of the drilling equipment will directly affect the stability and quality of the processing. As the requirements for processing efficiency increase year by year, the durability of the drilling equipment has also received more attention. As the drilling equipment is running, progressive failures will occur. Therefore, how to detect failures as soon as possible when abnormal signs appear in the early stage, and avoid losses during processing or subsequent repairs, has become a problem to be solved. The problem.

Therefore, the purpose of the present invention is to provide a detection system and a detection method for pre-diagnosing the health of drilling equipment.

Therefore, one aspect of the present invention provides a detection system including a row of drilling equipment and a vibration sensor. The drilling equipment includes a drilling spindle unit, a driving unit, and a control unit. The drilling spindle unit includes a plurality of drilling spindles, the driving unit is used for driving each drilling spindle of the drilling spindle unit to perform back and forth movement, and the control unit is electrically connected to the driving unit to control the movement of each drilling spindle.

The vibration sensor is arranged on the row of drilling equipment to detect the vibration generated by any one of the drill shaft units when the drill shaft is moving, and is electrically connected to the control unit to transmit a sensing signal indicating the magnitude of the vibration To the control unit.

When the control unit operates in a diagnostic mode, the control unit sequentially controls each drill shaft to perform a back and forth movement, and determines whether each drill shaft is operating normally according to the received sensing signal.

In some embodiments, in the diagnosis mode, the control unit sequentially controls each drill shaft, moves from an initial position to the farthest position in a first direction in a first time interval, and then moves along The first direction moves to the initial position, and the time interval between two adjacent drill shafts that are sequentially controlled to move is equal to a second time interval, and the first time interval is smaller than the second time interval.

In some embodiments, when each drill shaft moves from the initial position to the farthest position, or moves from the farthest position to the initial position, the sensing signal will generate a corresponding amplitude on the time axis. A sharp point of relative amplitude. When the control unit determines that the number of the relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shafts are controlled to move back and forth, it is determined that each drill shaft is operating normally. When the control unit determines that the number of relative amplitude sharp points of the sensing signal is less than twice the number of times the drill shaft is controlled to move back and forth, it is determined that the drill shaft operation corresponding to the relative amplitude sharp point is missing abnormal.

In some embodiments, when the control unit determines that the number of the relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shaft is controlled to perform back and forth movement, and determines that the adjacent two When a time difference between the relative amplitude sharp points is within a standard time range, it is determined that each of the drill shafts is operating normally. And when the control unit determines that the number of the relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shaft is controlled to move back and forth, and determines the number of adjacent two of the relative amplitude sharp points. When the time difference is not within the standard time range, it is determined that the corresponding drilling spindle is operating abnormally.

In some embodiments, when the control unit determines that the number of relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shaft is controlled to move back and forth, the relative amplitude is defined The cusp is an i-th cusp in sequence, i=1, 2,..., 2N, and N is equal to the number of times the drill axis is controlled to move back and forth. The standard time range corresponding to the time difference between the j-th cusp and the j+1-th cusp is equal to the first time interval plus or minus a first preset deviation value, j=1, 3,..., 2N-1, The first preset deviation value is less than the first time interval. The standard time range corresponding to the time difference between the k+1th cusp and the k+2th cusp is equal to the second time interval minus the first time interval plus or minus the first preset deviation value, k= 2, 4,..., 2N-2.

When the control unit determines that the number of the relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shaft is controlled to move back and forth, and determines the pth sharp point and the p+2th sharp point When the time difference of is not within another standard time range, it is judged that the corresponding drill shaft is operating abnormally, p=1, 2,..., 2N-2, and the other standard time range is equal to the second time interval plus or minus one second The preset deviation value, the second preset deviation value is less than the second time interval.

Therefore, another aspect of the present invention provides a detection method suitable for a row of drilling equipment and a vibration sensor. The row of drilling equipment includes a plurality of drill shafts and a control unit. The detection method includes steps (A) ~ (D).

In step (A), the vibration sensor is installed on the row of drilling equipment to detect the vibration generated by each drill shaft when it moves.

In step (B), the control unit is operated in a diagnosis mode to sequentially control each drill shaft to perform a back and forth movement.

In step (C), a sensing signal indicating the magnitude of the vibration from the vibration sensor is received by the control unit.

In step (D), the control unit determines whether each drill shaft is operating normally according to the received sensing signal.

In some embodiments, in step (B), the control unit sequentially controls each drill shaft to move from an initial position to the farthest position in a first direction in a first time interval, and then The time interval between two adjacent drill shafts that move to the initial position along the first direction and are sequentially controlled to move is equal to a second time interval, and the first time interval is smaller than the second time interval.

In some embodiments, in step (C), when each drill shaft moves from the initial position to the farthest position, or moves from the farthest position to the initial position, the sensing signal will be A relative amplitude sharp point corresponding to the magnitude of the amplitude is generated on the time axis. In step (D), when the control unit determines that the number of the relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shaft is controlled to perform back and forth movement, it is determined that each drill shaft is operating normal. When the control unit determines that the number of relative amplitude sharp points of the sensing signal is less than twice the number of times the drill shaft is controlled to move back and forth, it is determined that the drill shaft operation corresponding to the relative amplitude sharp point is missing abnormal.

In some embodiments, in step (D), when the control unit determines that the number of relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shaft is controlled to perform back and forth movement , And when it is judged that a time difference between two adjacent sharp points of the relative amplitude is within a standard time range, it is judged that each of the drill shafts is operating normally. And when the control unit determines that the number of the relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shaft is controlled to move back and forth, and determines the number of adjacent two of the relative amplitude sharp points. When the time difference is not within the standard time range, it is determined that the corresponding drilling spindle is operating abnormally.

In some embodiments, in step (D), when the control unit determines that the number of relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shaft is controlled to perform back and forth movement When the relative amplitude cusp is defined as an i-th cusp in sequence, i=1, 2,..., 2N, N is equal to the number of times the iso-drill axis is controlled to move back and forth. The standard time range corresponding to the time difference between the j-th cusp and the j+1-th cusp is equal to the first time interval plus or minus a first preset deviation value, j=1, 3,..., 2N-1, The first preset deviation value is less than the first time interval. The standard time range corresponding to the time difference between the k+1th cusp and the k+2th cusp is equal to the second time interval minus the first time interval plus or minus the first preset deviation value, k= 2, 4,..., 2N-2.

When the control unit determines that the number of the relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shaft is controlled to move back and forth, and determines the pth sharp point and the p+2th sharp point When the time difference of is not within another standard time range, it is judged that the corresponding drill shaft is operating abnormally, p=1, 2,..., 2N-2, and the other standard time range is equal to the second time interval plus or minus one second The preset deviation value, the second preset deviation value is less than the second time interval.

The effect of the present invention is that the vibration sensor is used to detect the vibration of each drill shaft when it moves, so that the control unit in the diagnosis mode sequentially controls each drill shaft to move back and forth, and then according to all the drill shafts. The received sensing signal determines whether each corresponding drill spindle is operating normally. Therefore, the detection system and the detection method can effectively determine whether the drilling equipment is about to fail before the actual processing of the drilling equipment, and as soon as possible Solve and troubleshoot problems.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numbers.

1 and 2, an embodiment of the detection system 100 of the present invention includes a row of drilling equipment 1 and a vibration sensor 2. The drilling equipment 1 includes a drilling spindle unit 13, a driving unit 12, and a control unit 11. The drill shaft unit 13 includes a plurality of drill shafts 31-39. The driving unit 12 includes, for example, an electric motor, a plurality of transmission gears, a plurality of air cylinders, and a driving circuit for driving each of the drill shafts 31 to 39 of the drill shaft unit 13 to move back and forth. The control unit 11 is, for example, a microcontroller (MCU), and is electrically connected to the driving circuit of the driving unit 12 to control the movement of each of the drill shafts 31 to 39 through a control signal. Figure 2 is a perspective view illustrating an example of the row of drilling equipment 1, in which the number of the drill shafts 31 to 39 is nine, and they are arranged in the X-axis direction and the Y-axis direction perpendicular to each other, usually called It is a 5x5 row drill.

Referring to FIG. 1, FIG. 2 and FIG. 3, the detection method is applicable to the detection system 100 and includes steps S1 to S4.

In step S1, the vibration sensor 2 is installed on the row of drilling equipment 1 to detect the vibration generated by each of the drill shafts 31 to 39 when they move. The vibration sensor 2 is electrically connected to the control unit 11 to transmit a sensing signal obtained by measurement and indicating the magnitude of vibration to the control unit 11. In more detail, when the drill shafts 31 to 39 are not moving, the magnitude of the sensing signal measured by the vibration sensor 2 is equal to zero, and when the drill shafts 31 to 39 are moving, the signal Vibration is generated on the drilling equipment 1, and at a specific position, the sensing signal will generate a relative amplitude sharp point corresponding to the amplitude on the time axis.

In step S2, the control unit 11 is operated in a diagnosis mode to sequentially control each of the drill shafts 31 to 39 to perform a back and forth movement. More specifically, the control unit 11, for example, executes the diagnostic mode before starting the machining process with the drilling equipment 1 every day, so as to find abnormal signs and detect faults early before actual machining, and then Avoid losses caused by failure of conventional technology during processing.

The control unit 11 sequentially controls each of the drill shafts 31 to 39 to move from an initial position to the furthest point in a first direction in a first time interval, and then move to the initial position in the first direction, and follow The time interval between the two adjacent drill shafts 31 to 39 that are sequentially controlled to move is equal to a second time interval, and the first time interval is smaller than the second time interval. For example, according to the order of the drill shaft 31 to the drill shaft 35 and the drill shaft 35 to the drill shaft 39, or the drill shaft 31 to the drill shaft 39, every 1 second (that is, the first time interval) Only one of the drill shafts 31-39 in) moves in the vertical direction (ie, the first direction), and the second time interval is, for example, 2 seconds, but it is not limited to this.

In step S3, the control unit 11 receives the sensing signal from the vibration sensor 2 indicating the magnitude of the vibration. When each of the drill shafts 31-39 moves from the initial position to the farthest point, or from the farthest point to the initial position, the sensing signal will generate the relative amplitude sharp point corresponding to the amplitude on the time axis. . Refer to Figure 4 again. Figure 4 illustrates another aspect of the sensing signal corresponding to a total of 17 back and forth movements of multiple drill spindles (such as 16 drill spindles, such as a 10x7 arrangement), and the corresponding ones The number of relative amplitude sharp points is 34. For example, the two relative amplitude sharp points P1 and P2 correspond to one movement of the drill shaft.

In step S4, the control unit 11 determines whether each of the drill shafts 31 to 39 is operating normally according to the received sensing signal. When the control unit 11 determines that the number of the relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shafts 31 to 39 are controlled to move back and forth, and determines two adjacent relative amplitude sharp points When a time difference of the points is within a standard time range, it is judged that each of the drill shafts 31 to 39 is operating normally. When the control unit 11 determines that the number of the relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shafts 31 to 39 are controlled to move back and forth, and determines that two adjacent ones of the relative amplitude sharp points are When the time difference of the amplitude sharp point is not within the standard time range, it is determined that the corresponding drill shaft 31-39 operates abnormally. When the control unit 11 determines that the number of the relative amplitude sharp points of the sensing signal is less than twice the number of times the drill shafts 31 to 39 are controlled to move back and forth, it is determined that there is no corresponding relative amplitude sharp point. The drill shaft runs 31~39 abnormal.

In more detail, when the control unit 11 determines that the number of relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shafts 31 to 39 are controlled to perform back and forth movement, the relative amplitudes are defined The cusp is an i-th cusp in sequence, i=1, 2,..., 2N, N is equal to the number of times the drill shafts 31~39 are controlled to move back and forth, the j-th cusp and the j+1-th cusp The standard time range corresponding to the time difference is equal to the first time interval plus or minus a first preset deviation value, j=1, 3,..., 2N-1, and the first preset deviation value is less than the first time interval . The standard time range corresponding to the time difference between the k+1th cusp and the k+2th cusp is equal to the second time interval minus the first time interval plus or minus the first preset deviation value, k= 2, 4,..., 2N-2.

When the control unit 11 determines that the number of relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shafts 31 to 39 are controlled to perform back and forth movement, and determines the p-th sharp point and the p-th point When the time difference of the +2 sharp point is not within another standard time range, it is judged that the corresponding drill shaft is operating abnormally, p=1, 2,..., 2N-2, and the other standard time range is equal to the second time interval A second preset deviation value is added or subtracted, and the second preset deviation value is less than the second time interval.

Referring to FIG. 4 again, for example, the 16 drill shafts (such as a 10x7 arrangement) move back and forth in the order of the first drill shaft to the 10th drill shaft and the 10th drill shaft to the 16th drill shaft. In the first case, the total number of times the 16 drill shafts are controlled to perform back and forth movement is 17, the first time interval is equal to 1 second, and the first preset deviation value is equal to 0.5 second, as shown in Figure 4, there are a total of 34 Relative amplitude sharp points, and the time difference between the j-th sharp point and the j+1-th sharp point is within the standard time range of 0.5 seconds to 1.5 seconds, such as the two relative amplitude sharp points P1 and P2, P2 With P3, P3 and P4, it means that all the drill shafts are operating normally.

In the second case, assuming that the two relative amplitude sharp points P3 and P4 in Fig. 4 do not exist, it means that the second drill shaft has not moved from the initial position to the farthest position in the first direction (that is, not The operation of the drill down) is abnormal. In the third case, assuming that the relative amplitude sharp point P4 in Figure 4 does not exist, it means that the second drill shaft has not moved from the furthest point along the first direction to the initial position (that is, it has been drilled but not Drilling up) works abnormally.

In the fourth case, the total number of times the 16 drill shafts are controlled to move back and forth is 17, the first time interval is equal to 1 second, the second time interval is equal to 2 seconds, the first preset deviation value and The second preset deviation values are all equal to 0.5 seconds. Assuming that the time difference between the two relative amplitude sharp points P1 and P2 in FIG. 4 is equal to 0.4 seconds, and the corresponding standard time range is 0.5 seconds to 1.5 seconds, then the first 1 The drill shaft is judged to be operating abnormally, or if the time difference between the two relative amplitude sharp points P1 and P3 in Figure 4 is equal to 1.4 seconds, and the corresponding other standard time range is 1.5 seconds to 2.5 seconds, then The second drill shaft was judged to be malfunctioning.

In summary, the vibration sensor 2 detects the vibration generated by each drill shaft when it moves, so that the control unit 11 in the diagnostic mode sequentially controls each drill shaft to move back and forth according to The received sensing signal determines whether each corresponding drill shaft is operating normally. Therefore, the detection system 100 and the detection method can effectively determine whether the drilling equipment 1 is about to fail before the actual processing of the drilling equipment 1 , And solve and eliminate the problem as soon as possible, so it can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to Within the scope covered by the patent of the present invention.

100: detection system 1: Drilling equipment 11: Control unit 12: drive unit 13: Drill shaft unit 31~39: Drill shaft 2: Vibration sensor S1~S4: steps P1~P4: Relative amplitude sharp point

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a block diagram illustrating an embodiment of the detection system of the present invention; Figure 2 is a perspective view exemplarily illustrating a row of drilling equipment of this embodiment; Figure 3 is a flowchart illustrating a detection method performed by this embodiment; and FIG. 4 is a schematic diagram illustrating one aspect of a sensing signal in this embodiment.

100: detection system

1: Drilling equipment

11: Control unit

12: drive unit

13: Drill shaft unit

2: Vibration sensor

Claims (10)

A detection system including: A row of drilling equipment including A drill spindle unit, including multiple drill spindles, A driving unit for driving each drill shaft of the drill shaft unit to move back and forth, A control unit electrically connected to the drive unit to control the movement of each drill shaft, and A vibration sensor is arranged on the row of drilling equipment to detect the vibration generated by any one of the drill shaft units when the drill shaft is moving, and is electrically connected to the control unit to send a sensing signal indicating the magnitude of the vibration Sent to the control unit, Wherein, when the control unit operates in a diagnosis mode, the control unit sequentially controls each drill shaft to perform a back and forth movement, and determines whether each drill shaft is operating normally according to the received sensing signal. The detection system according to claim 1, wherein, in the diagnosis mode, the control unit sequentially controls each of the drill shafts to move from an initial position in a first direction to the farthest position in a first time interval , And then move along the first direction to the initial position, and the time interval between the two adjacent drill shafts that are sequentially controlled to move is equal to a second time interval, and the first time interval is smaller than the second time interval. The detection system according to claim 2, wherein when each drill shaft moves from the initial position to the farthest position, or moves from the farthest position to the initial position, the sensing signal will be generated on the time axis A relative amplitude sharp point corresponding to the magnitude of the amplitude. When the control unit determines that the number of the relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shaft is controlled to perform back and forth movement, it determines each The drill shaft is operating normally, and when the control unit determines that the number of the relative amplitude sharp points of the sensing signal is less than twice the number of times the drill shaft is controlled to move back and forth, it is judged that there is no corresponding relative amplitude sharp point The drill shaft works abnormally. The detection system according to claim 3, wherein when the control unit determines that the number of the relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shaft is controlled to perform back and forth movement, and determines the relative When a time difference between two adjacent relative amplitude sharp points is within a standard time range, it is determined that each drill shaft is operating normally, and when the control unit determines that the number of the relative amplitude sharp points of the sensing signal is equal to When the drill spindles are controlled to perform back and forth movement twice the number, and when it is determined that the time difference between the two adjacent relative amplitude sharp points is not within the standard time range, it is determined that the corresponding drill spindle operates abnormally. The detection system according to claim 4, wherein the control unit defines the The equal relative amplitude cusp is the i-th cusp in sequence, i=1, 2,..., 2N, N is equal to the number of times the equal drill axis is controlled to move back and forth, the j-th cusp and the j+1-th cusp The standard time range corresponding to the time difference of is equal to the first time interval plus or minus a first preset deviation value, j=1, 3,..., 2N-1, and the first preset deviation value is less than the first time interval , The standard time range corresponding to the time difference between the k+1th cusp and the k+2th cusp is equal to the second time interval minus the first time interval plus or minus the first preset deviation value, k =2, 4,..., 2N-2, When the control unit determines that the number of the relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shaft is controlled to move back and forth, and determines the pth sharp point and the p+2th sharp point When the time difference of is not within another standard time range, it is judged that the corresponding drill shaft is operating abnormally, p=1, 2,..., 2N-2, and the other standard time range is equal to the second time interval plus or minus one second The preset deviation value, the second preset deviation value is less than the second time interval. A detection method is suitable for a row of drilling equipment and a vibration sensor. The row of drilling equipment includes a plurality of drill shafts and a control unit. The detection method includes: (A) The vibration sensor is installed on the row of drilling equipment to detect the vibration generated by each drill shaft when it moves; (B) The control unit operates in a diagnostic mode to sequentially control each drill shaft to perform a back and forth movement; (C) receiving a sensing signal from the vibration sensor and indicating the magnitude of vibration by the control unit; and (D) The control unit determines whether each drill shaft is operating normally according to the received sensing signal. The detection method according to claim 6, wherein, in step (B), the control unit sequentially controls each of the drill shafts to move from an initial position to the furthest in a first direction in a first time interval , Then move along the first direction to the initial position, and the time interval between the two adjacent drill shafts that are sequentially controlled to move is equal to a second time interval, and the first time interval is smaller than the second time interval . The detection method according to claim 7, wherein, in step (C), when each drill shaft moves from the initial position to the farthest position, or moves from the farthest position to the initial position, the sense of The measurement signal generates a relative amplitude sharp point corresponding to the amplitude on the time axis. In step (D), when the control unit determines that the number of the relative amplitude sharp points of the sensing signal is equal to that of the drill spindles being controlled to execute When the number of times of the back and forth movement is twice the number, it is judged that each of the drill shafts is operating normally, and when the control unit judges that the number of the relative amplitude sharp points of the sensing signal is less than the number of times the drill shafts are controlled to perform the back and forth movement When the number is twice as large, it is judged that the drill shaft that lacks the sharp point corresponding to the relative amplitude operates abnormally. The detection method according to claim 8, wherein, in step (D), when the control unit determines that the number of the relative amplitude sharp points of the sensing signal is equal to the number of times the drill shaft is controlled to move back and forth When it is judged that the time difference between the two adjacent relative amplitude sharp points is within a standard time range, it is judged that each drill shaft is operating normally, and when the control unit judges the sensing signals The number of relative amplitude sharp points is equal to twice the number of times the drill shafts are controlled to move back and forth, and when it is determined that the time difference between two adjacent relative amplitude sharp points is not within the standard time range, it is determined that the corresponding The drill shaft works abnormally. The detection method according to claim 9, wherein, in step (D), when the control unit determines that the number of the relative amplitude sharp points of the sensing signal is equal to the number of times the drill shaft is controlled to move back and forth When the number is doubled, the relative amplitude cusps are defined as an i-th cusp in sequence, i=1, 2,..., 2N, N is equal to the number of times the iso-drilling axis is controlled to move back and forth, the j-th cusp and The standard time range corresponding to the time difference of the j+1th cusp is equal to the first time interval plus or minus a first preset deviation value, j=1, 3,..., 2N-1, the first preset deviation Value is less than the first time interval, the standard time range corresponding to the time difference between the k+1th cusp and the k+2th cusp is equal to the second time interval minus the first time interval plus or minus the first time interval A preset deviation value, k=2, 4,..., 2N-2, When the control unit determines that the number of the relative amplitude sharp points of the sensing signal is equal to twice the number of times the drill shaft is controlled to move back and forth, and determines the pth sharp point and the p+2th sharp point When the time difference of is not within another standard time range, it is judged that the corresponding drill shaft is operating abnormally, p=1, 2,..., 2N-2, and the other standard time range is equal to the second time interval plus or minus one second The preset deviation value, the second preset deviation value is less than the second time interval.

Images