A broken tool detection method, a detection module, and a sheet processing device

Abstract

This application relates to the technical field of sheet processing, and is about a tool breakage detection method, a detection module, and a sheet processing device, including: obtaining the detection range of an inductive sensor; controlling the tool to be measured to move in a first direction, the first direction being parallel to the direction from the fixed end to the working end of the tool to be measured, and the first direction facing the detection range; when the inductive sensor detects that the working end enters the detection range, controlling the tool to be measured to stop moving; obtaining the judgment information of the tool to be measured, the judgment information including a first threshold; obtaining the moving distance of the tool to be measured in the first direction; comparing the first threshold with the moving distance; if the moving distance is greater than the first threshold, it is determined that the tool to be measured is broken; The solution provided by this application realizes automatic monitoring of tool breakage for sheet processing, avoids incomplete sheet processing caused by tool breakage, and reduces the problem of the qualified rate of sheet processing.

Description

Technical Field

[0001] This application relates to the technical field of sheet processing devices, and particularly relates to a tool breakage detection method, a detection module, and a sheet processing device. Background Art

[0002] A sheet refers to a flat rectangular material plate of a standard size. Among them, non-metallic sheets are widely used in the furniture and construction industries and are used as components for walls, ceilings, or floors. Among them, according to the thickness of the sheet, it can be divided into thin sheets, medium sheets, thick sheets, and extra-thick sheets. Moreover, as a lightweight building sheet, with characteristics such as high strength, light weight, fire resistance, environmental protection, good decorative effect, and easy processing, the sheet can be applied to the interior ceiling, lightweight partition wall, and decoration of buildings, making the sheet gradually become a new type of building decoration material with energy conservation, waste utilization, environmental protection, and the most development potential in the field of building decoration.

[0003] According to different application requirements, the size and shape of the sheet need to be adjusted by cutting, and features such as holes, grooves, and patterns need to be processed on the sheet by a tool, so that the sheet can be fixed and achieve an aesthetic effect. Currently, a sheet automatic processing machine is generally used for cutting and drilling the sheet. When the sheet automatic processing machine processes the sheet, the tool may break due to reaching the service life or being subjected to a severe impact, thereby affecting the subsequent processing of the sheet and resulting in incomplete sheet processing. Currently, the general tool breakage detection uses manual detection or a photoelectric sensor for detection. When using manual detection, the staff needs to monitor the tool throughout the processing process and manually stop the operation of the automatic processing machine when visually observing the tool breakage. Such a tool breakage detection method not only wastes manpower, but also when the tool breaks, the broken tool may cause harm to the monitoring worker during the sputtering process. When using a photoelectric sensor for detection, the debris from the sheet processing may splash into the photoelectric induction area and block the opposed induction light, resulting in false alarms or inability to detect tool breakage warnings, affecting the normal sheet processing process.

[0004] For example, in the Chinese utility model patent with the publication number "CN212469835U" and the patent name "A Plate Drilling Machine", specifically, the plate to be drilled is placed on the plate table, the telescopic rod descends, and the plate is fixed by the stabilizing block. The slider can slide to the position where drilling is required through the sliding of the electric slide rail. The sliding frame drives the driving motor to move downward through the sliding rod. The rotation of the output shaft of the driving motor drives the rotating handle, and the rotating handle drives the drill bit to rotate. Drilling can be carried out when the drill bit touches the plate. When the pull column is pulled, the pull column drives the fixing strip to cooperate with the auxiliary block and the elastic strip, so that the pulling block slides to one side by the elastic force of the spring, so that the clamping block moves away from the notch. After removing the auxiliary head and replacing it with a rotating handle of a different diameter, the rotating handle is installed on the auxiliary head again. The auxiliary head is placed in the fixed box, and the pull column is released. The clamping block springs back into the notch, and the auxiliary head can be fixed, completing the handle replacement. However, this drilling machine cannot perform broken tool monitoring on the drill bit, and workers need to monitor the tool throughout the operation of the drilling machine to prevent the drill bit from breaking.

[0005] Therefore, how to realize the automatic broken tool monitoring of the tool used for plate processing is a technical problem that needs to be solved by technical personnel at present. Summary of the Invention

[0006] To overcome the problems existing in the related art, the present application provides a broken tool detection method, a detection module, and a plate processing device, which realize the automatic broken tool monitoring of the tool used for plate processing, avoid incomplete plate processing caused by tool breakage, and reduce the problem of the qualified rate of plate processing.

[0007] To achieve the above object, the present application provides a broken tool detection method in one aspect, including:

[0008] S1: Obtain the detection range of the inductive sensor;

[0009] S2: Control the tool to be measured to move in the first direction, the first direction is parallel to the direction from the fixed end to the working end of the tool to be measured, and the first direction faces the detection range;

[0010] S3: When the inductive sensor detects that the working end enters the detection range, control the tool to be measured to stop moving;

[0011] S4: Obtain the judgment information of the tool to be measured, and the judgment information includes a first threshold;

[0012] S5: Obtain the moving distance of the tool to be measured in the first direction;

[0013] S6: Compare the first threshold with the moving distance;

[0014] S7: If the moving distance is greater than the first threshold, it is determined that the tool to be measured is broken.

[0015] Preferably, the judgment information further includes a second threshold value;

[0016] After comparing the first threshold value with the moving distance, it further includes:

[0017] If the moving distance is less than or equal to the first threshold value, then compare the second threshold value with the moving distance;

[0018] If the moving distance is greater than the second threshold value, it is determined that the tool to be measured is worn;

[0019] If the moving distance is equal to the second threshold value, it is determined that the tool to be measured is intact.

[0020] Preferably, before controlling the tool to be measured to move in the first direction, it further includes:

[0021] Obtain the tool length of the tool to be measured;

[0022] Determine the detection position according to the tool length;

[0023] Control the inductive sensor to move to the detection position.

[0024] Preferably, before controlling the tool to be measured to move in the first direction, it includes:

[0025] Obtain an inspection position, and the direction from the inspection position to the detection range is parallel to the first direction;

[0026] Obtain the working position of the tool to be measured;

[0027] Control the tool to be measured to move from the working position to the inspection position.

[0028] Preferably, before obtaining the judgment information of the tool to be measured and obtaining the tool length of the tool to be measured, it further includes:

[0029] Obtain the tool number of the tool to be measured;

[0030] Match a data set corresponding to the tool number from the database, and the data set includes the judgment information and the tool length corresponding to the tool to be measured.

[0031] Preferably, obtaining the moving distance of the tool to be measured in the first direction includes:

[0032] Obtain the pitch of the screw rod for driving the tool to be measured to move;

[0033] Obtain the number of turns of the servo motor for driving the screw rod to rotate;

[0034] Calculate the moving distance according to the number of turns and the pitch of the screw rod.

[0035] The present application provides a broken tool detection module in another aspect, including:

[0036] An inductive sensor and a telescopic mechanism;

[0037] The telescopic mechanism is used to drive the tool to be measured to move in the first direction;

[0038] The inductive sensor is used to detect whether the working end of the tool to be measured enters the detection range of the inductive sensor.

[0039] The present application further provides a broken tool detection module, including:

[0040] The broken tool detection module as described above, and the tool to be measured;

[0041] The fixed end of the tool to be measured is fixed to the telescopic end of the telescopic mechanism;

[0042] The tool to be measured is used for processing a plate.

[0043] Preferably, it includes: a placement flat plate, a slider, a guide rail, and a moving cylinder;

[0044] The placement flat plate includes a placement plane, and a rectangular long hole is provided on the placement plane;

[0045] The slider is slidably connected to the guide rail, and the extending direction of the guide rail is perpendicular to the telescopic direction of the telescopic end of the telescopic mechanism;

[0046] The extending direction of the rectangular long hole is parallel to the extending direction of the guide rail;

[0047] The telescopic mechanism is fixed to the slider, the tool to be measured corresponds to the rectangular long hole, and the first direction is perpendicular to the placement plane;

[0048] The placement flat plate is located between the moving cylinder and the telescopic mechanism, and the inductive sensor is fixed to the telescopic rod of the moving cylinder, and the telescopic direction of the telescopic rod is perpendicular to the placement plane.

[0049] Preferably, it further includes: a pressing cylinder and a pressing wheel structure;

[0050] The moving direction of the piston rod of the pressing cylinder is perpendicular to the placement plane;

[0051] The pressing wheel structure includes a fixing plate, a pushing cylinder, a plurality of rotating shafts, and a plurality of pressing wheels;

[0052] The fixing plate is fixed to the pushing rod of the pushing cylinder, and the pushing direction of the pushing rod is perpendicular to the placement plane;

[0053] The pressing wheel is rotatably connected to the fixing plate through the rotating shaft, and the axis of the rotating shaft is parallel to the placement plane;

[0054] The plane tangent to the circumferential surfaces of several of the pressing wheels is parallel to the placement plane.

[0055] The technical solution provided by this application may include the following beneficial effects:

[0056] In this technical solution, first, the detection range of the inductive sensor is obtained. Among them, the inductive sensor generates an alternating magnetic field, and the coverage range of this alternating magnetic field is the detection range. A metal object will cause a change in the alternating magnetic field. Then, the first direction is parallel to the direction from the fixed end to the working end of the tool to be measured, and at the same time, the first direction is oriented towards the detection range. Then, the tool to be measured is controlled to move along the first direction. When the inductive sensor detects that the working end enters the detection range, since the tool to be measured is made of metal, the tool to be measured will cause a change in the alternating magnetic field, thereby detecting the presence of the tool to be measured. The inductive sensor emits a signal, and according to this signal, the tool to be measured is controlled to stop moving. Then, the judgment information of the tool to be measured is obtained. This judgment information includes a first threshold value. Among them, the tool to be measured has a complete judgment line and a fracture judgment line. The distance between the complete judgment line and the fracture judgment line is the wear distance X. When the tool to be measured is complete, the moving distance of the tool to be measured along the first direction from the start of movement to the stop of movement is S, and the first threshold value is the length value obtained by adding the moving distance S and the wear distance X. At the same time, the actual moving distance of the tool to be measured in the first direction from the start of movement to the stop of movement is obtained. When the tool to be measured is fractured, the tool to be measured becomes shorter, and the distance that the working end of the tool to be measured needs to move to reach the detection range becomes longer. Therefore, finally, by comparing the first threshold value and the actual moving distance of the tool to be measured, if the moving distance is greater than the first threshold value, it is determined that the tool to be measured is fractured, realizing the automatic detection of the fractured tool, thereby being able to avoid incomplete sheet processing caused by tool fracture, reducing the problem of the yield rate of sheet processing, and at the same time being able to reduce the workload of the staff. There is no need for manual monitoring of the tool throughout the sheet processing process, reducing the labor cost, and also being able to avoid harm to the staff when the tool fractures. And the detection method using the inductive sensor, compared with using the photoelectric sensor for detection, can avoid the influence of sheet debris on the broken tool detection when processing non-metallic sheets.

[0057] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. Brief Description of the Drawings

[0058] By describing the exemplary embodiments of the present application in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present application will become more obvious. Among them, in the exemplary embodiments of the present application, the same reference numerals generally represent the same components.

[0059] Figure 1It is a schematic flow chart of the broken tool detection method shown in the embodiments of the present application;

[0060] Figure 2 It is a schematic flow chart of the tool wear detection shown in the embodiments of the present application;

[0061] Figure 3 It is a schematic flow chart of controlling the inductive sensor to move to the detection position shown in the embodiments of the present application;

[0062] Figure 4 It is a schematic flow chart of controlling the tool to be measured to move to the inspection position shown in the embodiments of the present application;

[0063] Figure 5 It is a schematic flow chart of obtaining the determination information of the tool to be measured and the tool length shown in the embodiments of the present application;

[0064] Figure 6 It is a schematic flow chart of the broken tool detection method when the moving distance is a constant value shown in the embodiments of the present application;

[0065] Figure 7 It is a schematic structural diagram of the plate processing device shown in the embodiments of the present application;

[0066] Figure 8 It is a schematic structural diagram of the broken tool detection module shown in the embodiments of the present application;

[0067] Figure 9 It is a schematic structural diagram of the pressing wheel structure shown in the embodiments of the present application;

[0068] In the figure: 1. Broken tool detection module; 10. Inductive sensor; 11. Telescopic mechanism; 2. Placing flat plate; 20. Placing plane; 21. Rectangular long hole; 3. Slide block; 4. Guide rail; 5. Moving cylinder; 6. Pressing cylinder; 7. Pressing wheel structure; 70. Fixed plate; 71. Pushing cylinder; 72. Rotating shaft; 73. Pressing wheel. Detailed implementation manners

[0069] In order to make the purpose, technical solutions and advantages of the present application clearer and more understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0070] The technical solutions of the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. Embodiment

[0071] The broken tool detection method includes:

[0072] S1: Obtain the detection range of the inductive sensor;

[0073] S2: Control the tool under test to move in a first direction, where the first direction is parallel to the direction from the fixed end to the working end of the tool under test, and the first direction faces the detection range;

[0074] S3: When the inductive sensor detects that the working end enters the detection range, control the tool under test to stop moving;

[0075] S4: Obtain the judgment information of the tool under test, where the judgment information includes a first threshold;

[0076] S5: Obtain the moving distance of the tool under test in the first direction;

[0077] S6: Compare the first threshold and the moving distance;

[0078] S7: If the moving distance is greater than the first threshold, determine that the tool under test is broken.

[0079] According to different application requirements, plates need to be processed to add features such as holes, grooves, and patterns on the plates. When using a plate processing device to process plates, the cutting tool used for processing reaches the end of its service life or the tool is subjected to a severe impact, which may cause the tool to break, thus affecting the subsequent processing of the plates and resulting in incomplete plate processing. Currently, most tool breakage detections are carried out by manual inspection or photoelectric sensors. When using manual inspection, the staff needs to monitor the tool throughout the processing process and manually stop the operation of the automatic processing machine when visually observing the tool breakage. Such a tool breakage detection method not only wastes manpower but also may cause harm to the monitoring workers during the sputtering process of the broken tool when the tool breaks. When using a photoelectric inductive sensor for detection, the debris generated during plate processing may splash into the photoelectric induction area, blocking the opposed induction light, resulting in false alarms or inability to detect tool breakage warnings, affecting the normal plate processing flow. Therefore, a tool breakage detection method needs to be designed to achieve automatic detection of broken tools.

[0080] Combined with Figure 1, in this embodiment, first, the detection range of the inductive sensor is obtained. Here, the inductive sensor in this example is an inductive proximity switch, which generates an alternating magnetic field, and the coverage range of this alternating magnetic field is the detection range. A metal object will cause a change in the alternating magnetic field. A number of cutting tools for processing are arranged in a multi-head drill package and are controlled to move through a telescopic mechanism in the multi-head drill package. The tool to be measured is any one of the several cutting tools, and the direction from the fixed end to the working end of the tool to be measured is parallel to the first direction, and the first direction faces the detection range. Then, the telescopic mechanism is used to control the tool to be measured to move along the first direction. When the inductive sensor detects that the working end enters the detection range, since the tool to be measured is made of metal, the tool to be measured will cause a change in the alternating magnetic field, thereby detecting the presence of the tool to be measured. The inductive sensor emits a signal, and according to this signal, the telescopic mechanism controls the tool to be measured to stop moving. Then, the judgment information of the tool to be measured is obtained. This judgment information includes a first threshold. Here, the tool to be measured has a complete judgment line and a fracture judgment line, and the distance between the complete judgment line and the fracture judgment line is the wear distance X. When the tool to be measured is complete, the moving distance of the tool to be measured along the first direction from the start of movement to the stop of movement is S, and the first threshold is the length value obtained by adding the moving distance S and the wear distance X. At the same time, the actual moving distance of the tool to be measured in the first direction from the start of movement to the stop of movement is obtained. When the tool to be measured is fractured, the tool to be measured becomes shorter, and the distance that the working end of the tool to be measured needs to move to reach the detection range becomes longer. Therefore, by comparing the first threshold and the actual moving distance of the tool to be measured, if the moving distance is greater than the first threshold, it is determined that the tool to be measured is fractured, realizing the automatic detection of fractured tools, which can avoid incomplete sheet processing caused by tool fracture, reduce the problem of the yield rate of sheet processing, and at the same time can also reduce the workload of the staff. There is no need for manual monitoring of the cutting tools throughout the sheet processing process, reducing the labor cost and also avoiding harm to the staff when the tool fractures. Moreover, the detection method using an inductive sensor can avoid the influence of sheet debris on the broken tool detection compared with using a photoelectric sensor for detection when processing non-metallic sheets.

[0081] In addition, to illustrate how to obtain the moving distance of the tool to be measured in the first direction, in this example, the broken tool detection module applying this broken tool detection method uses a servo motor to drive a screw to rotate, so that the screw drives the tool to be measured to move along the first direction. First, the pitch of the screw is obtained, then the number of turns of the screw driven by the servo motor is calculated according to the number of pulses when the servo motor rotates and the angle corresponding to each pulse number, and finally, according to the pitch of the screw and the number of turns of rotation, the distance that the tool to be measured is driven by the pitch to move on the screw axis can be calculated, that is, the moving distance of the tool to be measured in the first direction.

[0082] Embodiment Two

[0083] The broken tool detection method further includes:

[0084] The judgment information further includes a second threshold;

[0085] After comparing the first threshold and the moving distance, it further includes:

[0086] If the moving distance is less than or equal to the first threshold, then compare the second threshold and the moving distance;

[0087] If the moving distance is greater than the second threshold, it is determined that the tool to be measured is worn;

[0088] If the moving distance is equal to the second threshold, it is determined that the tool to be measured is intact.

[0089] During the processing of the sheet material, the tool will have normal wear. In case of wear, the staff can judge the wear situation and thus replace the tool in advance to prevent the tool from breaking during the processing. It is necessary to know whether the tool is in a worn state. Therefore, it is necessary to realize the automatic detection of the worn tool to be measured.

[0090] Combined with Figure 2 , in this embodiment, the judgment information obtained during the fracture detection further includes a second threshold. The second threshold is the moving distance S of the tool to be measured along the first direction from the start of movement to the stop of movement when the tool to be measured is intact. After comparing the first threshold and the actual moving distance of the tool to be measured along the first direction, if the judgment result is that the tool to be measured is not broken, then compare the second threshold and the actual moving distance of the tool to be measured along the first direction. When the tool to be measured is worn, the length of the worn tool is greater than the length of the broken tool but less than the length of the intact tool. Therefore, the actual moving distance of the working end of the tool to be measured when it reaches the detection range is between the first threshold and the second threshold. If the moving distance is greater than the second threshold, it is determined that the tool to be measured is worn. If the moving distance is equal to the second threshold, it is determined that the tool to be measured is intact, realizing the automatic detection of the worn tool to be measured. At the same time, when it is determined that the tool to be measured is in a worn state, it is also possible to output the actual moving distance of the tool to be measured in the first direction, and calculate the distance from the worn state to the broken state of the tool to be measured according to the moving distance and the first threshold, so that the staff can determine the wear situation of the tool to be measured, estimate the fracture time of the tool to be measured, and replace the tool to be measured in advance according to the estimated fracture time, reducing the risk of the tool to be measured breaking during the processing of the sheet material.

[0091] Embodiment 3

[0092] Before controlling the tool to be measured to move along the first direction, the broken tool detection method further includes:

[0093] Obtain the tool length of the tool to be measured;

[0094] Determine the detection position according to the tool length;

[0095] Control the inductive sensor to move to the detection position.

[0096] In addition, before controlling the tool to be measured to move in the first direction, it includes:

[0097] Obtain the inspection position, and the direction from the inspection position to the detection range is parallel to the first direction;

[0098] Obtain the working position of the tool to be measured;

[0099] Control the tool to be measured to move from the working position to the inspection position.

[0100] For the processing of the plate, tools with different lengths are required. In this example, several tools are arranged in a multi-head drill package and are controlled to move through the telescopic mechanism in the multi-head drill package. The tool to be measured is any one of the several tools, and the lengths of the telescopic rods of the telescopic mechanism for controlling the movement of the tool are the same. In order to realize the broken tool detection of the tool to be measured, it is necessary to automatically adjust the position of the inductive sensor according to the tool length of the tool to be measured.

[0101] Combined with Figure 3 , in this embodiment, before controlling the tool to be measured to move in the first direction, first obtain the tool length of the tool to be measured, then match the corresponding detection position of the inductive sensor in the database according to the tool length, and the inductive sensor is driven by a moving cylinder to move to the detection position, so as to realize the automatic adjustment of the position of the inductive sensor according to tools of different lengths, so that this detection method can be adapted to the driving mechanisms of telescopic rods for controlling tools with the same length and different lengths at the same time, and avoid the detection method being unable to be used due to the influence of the length of the telescopic rod of the driving mechanism.

[0102] When processing the plate, it is necessary to control the tool to move in the direction parallel to the plane to be processed of the plate. When broken tool detection is required, the tool to be measured may not be at the inspection position corresponding to the detection range of the inductive sensor. Therefore, it is necessary to realize the automatic movement of the tool to be measured to the detection position.

[0103] Combined with Figure 4, in a sheet processing device applying the broken tool detection method, the detection range of the inductive sensor corresponds to the inspection position, and the direction from the inspection position to the detection range is parallel to the first direction. Since the first direction is parallel to the direction from the fixed end to the working end of the tool to be measured, and the first direction faces the detection range, the direction from the inspection position to the detection range is consistent with the first direction. When the inductive sensor can only move in the first direction, the inspection position is a fixed position in space, and the inspection position can be obtained by acquiring this preset fixed position. When the inductive sensor can move on a plane perpendicular to the first direction, the inspection position moves with the inductive sensor on the plane perpendicular to the first direction, and the inspection position is obtained according to the position where the inductive sensor moves. Then, the working position of the tool to be measured on the plane perpendicular to the first direction is obtained (both the working position and the inspection position in this example are located by coordinates). Finally, the tool to be measured is moved to the detection position through a linear moving mechanism or a planar moving mechanism such as a slide rail, so as to realize automatically controlling the tool to be measured to move to the detection position, improving the automation degree of broken tool detection and reducing the consumption of labor cost and time cost.

[0104] Embodiment 4

[0105] Before obtaining the judgment information of the tool to be measured and obtaining the tool length of the tool to be measured, the broken tool detection method further includes:

[0106] Obtaining the tool number of the tool to be measured;

[0107] Matching a data set corresponding to the tool number from a database, where the data set includes the judgment information and the tool length corresponding to the tool to be measured.

[0108] Combined with Figure 5, in this embodiment, since the tool for sheet metal processing is a standard part, the tool length of the tool to be measured can be directly obtained and the data of the tool length is pre-stored in the database. The judgment information of the tool to be measured includes a first threshold and a second threshold. The first threshold is the length value obtained by adding the moving distance S and the wear distance X of the tool to be measured along the first direction from the start movement time to the stop movement time when the tool to be measured is intact. The second threshold is the moving distance S of the tool to be measured along the first direction from the start movement time to the stop movement time when the tool to be measured is intact. The moving distance S is the value obtained by adding the preset elongation value S1 of the telescopic mechanism and the length S2 of the intact tool to be measured. Therefore, both the first threshold and the second threshold can be pre-stored in the database. To improve the efficiency of obtaining the judgment information and the tool length of the tool to be measured, first, number several tools in the multi-head drill package, and then gather the data sets of the tool length and the judgment information associated with the same tool to be measured in the database to form a data set corresponding to the tool to be measured. At the same time, number the data set, and the number of the data set is associated with the tool number. When it is necessary to perform a broken tool detection on the tool to be measured, the tool number of the tool to be measured is received in the database, and the corresponding data set can be matched in the database through the tool number, thereby improving the efficiency of obtaining the judgment information and the tool length.

[0109] Embodiment Five

[0110] This broken tool detection method can also detect broken tools based on another principle, specifically:

[0111] Obtain the detection range of the inductive sensor;

[0112] Control the tool to be measured to move along the first direction, where the first direction is parallel to the direction from the fixed end to the working end of the tool to be measured, and the first direction faces the detection range;

[0113] The moving distance of the tool to be measured in the first direction is a constant value;

[0114] Judge whether the working end enters the detection range;

[0115] If the working end enters the detection range, it is determined that the tool to be measured is intact;

[0116] If the working end does not enter the detection range, it is determined that the tool to be measured is broken.

[0117] Specifically, in combination with Figure 6, the moving distance of the tool under test in the first direction is a constant value, that is, the distance for controlling the tool under test to move in the first direction is a constant value. When the moving distance of the tool under test in the first direction reaches the constant value, the tool under test is controlled to stop moving. The constant value is set based on the standard that the working end of the complete tool under test just enters the detection range of the inductive sensor and can be sensed by the inductive sensor. Therefore, when the position of the inductive sensor is fixed, the constant values corresponding to tools under test with different lengths are different. So when the tool under test is controlled to move a constant distance in the first direction, if the inductive sensor detects that the working end enters the detection range, it is determined that the tool under test is complete. If the inductive sensor detects that the working end does not enter the detection range, it means that the length of the tool under test at this moment is shorter than the length of the complete tool under test. So it can be determined that the tool under test is broken. This method is applicable to the situation where only whether the tool is broken needs to be detected. The logic is simple, and the detection method using the inductive sensor can avoid the influence of plate chips on the broken tool detection when processing non-metallic plates compared with using the photoelectric sensor for detection.

[0118] Embodiment Six

[0119] On the other hand, the present application provides a broken tool detection module, including:

[0120] An inductive sensor 10 and a telescopic mechanism 11;

[0121] The telescopic mechanism 11 is used to drive the tool under test to move in the first direction;

[0122] The inductive sensor 10 is used to detect whether the working end of the tool under test enters the detection range of the inductive sensor 10.

[0123] Combined with Figure 8, in this embodiment, a broken tool detection module 1 is provided. The broken tool detection module 1 realizes the automatic detection of broken tools by applying the above-mentioned broken tool detection method. The fixed end of the tool to be detected is fixed in the telescopic end of the telescopic mechanism 11. Among them, the telescopic mechanism 11 can be a linear cylinder and a linear motor, and the direction from the fixed end to the working end of the tool to be detected is parallel to the telescopic direction of the telescopic end of the telescopic mechanism 11. Then, an inductive sensor 10 is set, and the telescopic direction of the telescopic mechanism 11 faces the detection range of the inductive sensor 10. During broken tool detection, the telescopic mechanism 11 pushes the tool to be detected towards the detection range of the inductive sensor 10. When the working end of the tool to be detected enters the detection range, the inductive sensor 10 emits a signal to control the telescopic mechanism 11 to stop moving. Then, based on the moving distance of the tool to be detected and the judgment information obtained from the database, it can be judged whether the tool to be detected is broken, realizing the automatic detection of broken tools. Thereby, it can avoid the incomplete processing of the board caused by the broken tool, reduce the problem of the yield rate of board processing, and at the same time can also reduce the workload of the staff. There is no need for manual monitoring of the tool throughout the board processing process, reducing the labor cost, and can also avoid harm to the staff when the tool breaks. Moreover, the detection method using the inductive sensor 10 can avoid the influence of board debris on broken tool detection when processing non-metallic boards compared with using a photoelectric sensor for detection.

[0124] Embodiment Seven

[0125] In addition, the present application also provides a board processing device, including:

[0126] The broken tool detection module 1 as described above, and the tool to be detected;

[0127] The fixed end of the tool to be detected is fixed in the telescopic end of the telescopic mechanism 11;

[0128] The tool to be detected is used for processing the board.

[0129] This board processing device further includes:

[0130] A placement flat plate 20, a slider 3, a guide rail 4, and a moving cylinder 5;

[0131] The placement flat plate 20 includes a placement plane, and a rectangular long hole 21 is provided on the placement plane;

[0132] The slider 3 is slidably connected to the guide rail 4, and the extending direction of the guide rail 4 is perpendicular to the telescopic direction of the telescopic end of the telescopic mechanism 11;

[0133] The extending direction of the rectangular long hole 21 is parallel to the extending direction of the guide rail 4;

[0134] The telescopic mechanism 11 is fixed to the slider 3, the tool to be measured corresponds to the rectangular long hole 21, and the first direction is perpendicular to the placement plane;

[0135] The placement flat plate 20 is located between the moving cylinder 5 and the telescopic mechanism 11. The inductive sensor 10 is fixed to the telescopic rod of the moving cylinder 5, and the telescopic direction of the telescopic rod is perpendicular to the placement plane.

[0136] The sheet processing device further includes:

[0137] A pressing cylinder 6 and a pressing wheel structure 7;

[0138] The moving direction of the piston rod of the pressing cylinder 6 is perpendicular to the placement plane;

[0139] The pressing wheel structure 7 includes a fixing plate 70, a pushing cylinder 71, a plurality of rotating shafts 72 and a plurality of pressing wheels 73;

[0140] The fixing plate 70 is fixed to the pushing rod of the pushing cylinder 71, and the pushing direction of the pushing rod is perpendicular to the placement plane;

[0141] The pressing wheel 73 is rotatably connected to the fixing plate 70 through the rotating shaft 72, and the axis of the rotating shaft 72 is parallel to the placement plane;

[0142] The plane tangent to the circumferential surfaces of the plurality of pressing wheels 73 is parallel to the placement plane.

[0143] Combined with Figure 7 and Figure 8, in this embodiment, to detect a broken tool in a sheet processing device, a tool breakage detection module 1 and a tool to be tested are provided in the sheet processing device. The fixed end of the tool to be tested is fixed to the telescopic end of the telescopic mechanism 11, and the tool to be tested is used to process the sheet. Among them, the telescopic mechanism 11 is arranged in a multi-head drill package, and the telescopic mechanism 11 is provided with a plurality of telescopic ends. The telescopic directions of the plurality of telescopic ends are parallel, and a tool is fixed to each telescopic end. The tool to be tested is any one of the plurality of tools. At the same time, the sheet processing device further includes a placement flat plate 20, a slider 3, a guide rail 4, and a moving cylinder 5. The upper surface of the placement flat plate 20 is a placement plane for placing the sheet to be processed, and a rectangular long hole 21 is opened on the placement plane. A guide rail 4 is provided directly below the rectangular long hole 21, and the extending direction of the guide rail 4 is parallel to the extending direction of the rectangular long hole 21. At the same time, the length of the guide rail 4 is the same as the length of the rectangular long hole 21. The slider 3 is slidably connected to the guide rail 4, and the multi-head drill package is fixed to the slider 3, so that the slider 3 can drive the telescopic mechanism 11 to move. At the same time, the telescopic direction of the telescopic mechanism 11 is perpendicular to the placement plane. The telescopic mechanism 11 drives the tool to pass through the rectangular long hole 21 to drill, groove, etc. the sheet on the placement plane. In addition, the moving cylinder 5 is fixed directly above the placement flat plate 20, and the inductive sensor 10 is fixed to the telescopic rod of the moving cylinder 5. Thus, the inductive sensor 10 can move along the direction perpendicular to the placement plane through the moving cylinder 5. When processing the sheet, the telescopic mechanism 11 is driven by the slider 3 to move on the guide rail 4, so that the tool to be tested can process different positions of the sheet. When detecting a broken tool, the tool to be tested among the plurality of tools is selected, and then the slider 3 drives the telescopic mechanism 11 to move in the guide rail 4, driving the tool to be tested to move to the inspection position. Then, the detection position is determined according to the information of the tool to be tested. Then, the inductive sensor 10 is moved by the moving cylinder 5 to the detection position corresponding to the tool to be tested. Finally, the tool to be tested is moved into the detection range of the inductive sensor 10 by the telescopic mechanism 11, and the inductive sensor 10 detects the working end of the tool to be tested. Thus, while realizing the automatic processing of the sheet, it can also automatically detect the broken tool, avoiding the use of manual processing methods to process the sheet, improving the efficiency of sheet processing, and at the same time being able to improve the quality of sheet processing. The automatic broken tool detection can avoid incomplete sheet processing caused by tool breakage, reducing the problem of the yield rate of sheet processing. At the same time, it can also reduce the workload of the staff, eliminating the need for manual monitoring of the tool throughout the sheet processing process, reducing labor costs, and also avoiding harm to the staff when the tool breaks. Moreover, the detection method using the inductive sensor 10 can avoid the influence of sheet debris on broken tool detection when processing non-metallic sheets compared with using a photoelectric sensor for detection.

[0144] Combined with Figure 9, when the sheet is being processed, the sheet is easily impacted by the tool. When the sheet is impacted, the sheet will shift or warp, thus affecting the processing of machining features such as holes, grooves, and patterns. Therefore, it is necessary to press the processed sheet. In this example, the pressing wheel structure 7 is fixed directly above the placement flat plate 20. The pressing wheel structure 7 is composed of a fixing plate 70, a pushing cylinder 71, 4 rotating shafts 72, and 8 pressing wheels 73. Among them, the fixing plate 70 is a T-shaped plate member. The fixing plate 70 includes a first plate member and a second plate member. The largest plane of the first plate member is parallel to the placement plane. The first plate member is fixed on the pushing rod of the pushing cylinder 71. Then, the rotating shaft 72 passes through the second plate member, and 2 pressing wheels 73 are arranged at both ends of the rotating shaft 72. The axis of the rotating shaft 72 is parallel to the placement plane, and the plane tangent to the circumferential surfaces of the 8 pressing wheels 73 is parallel to the placement plane. When the sheet is being processed, the pushing cylinder 71 can push the fixing plate 70, so that the pressing wheels 73 press the sheet, avoiding the influence on the processing of the sheet caused by the warping of the sheet, improving the yield rate of the sheet. At the same time, the above pressing method does not affect the movement of the sheet on the placement plane, enabling part of the sheet to quickly move to the next position for processing after some machining features are processed in a part of the position, and there is no need to worry about the sheet shifting during the movement. In addition, the pressing cylinder 6 is also fixed directly above the placement flat plate 20. When the piston rod of the pressing cylinder 6 moves towards the placement plane, the piston rod abuts against the surface of the sheet placed on the placement plane, thereby realizing the limiting and secondary pressing of the processed sheet, preventing the sheet from moving in the direction perpendicular to the axis of the pressing wheel 73 and thus affecting the processing of the machining features.

[0145] The solution of the present application has been described in detail with reference to the accompanying drawings above. In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also know that the actions and modules involved in the specification are not necessarily essential to the present application. In addition, it can be understood that the steps in the method embodiments of the present application can be adjusted, combined, and deleted according to actual needs, and the structures in the device embodiments of the present application can be combined, divided, and deleted according to actual needs.

[0146] The various embodiments of the present application have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary skilled persons in the technical field to understand the embodiments disclosed herein.

Claims

1. A broken tool detection method, which is implemented by a broken tool detection module. The broken tool detection module includes an inductive sensor and a telescopic mechanism, and is characterized in that, The described broken tool detection method includes the following steps: S1: Obtain the detection range of the inductive sensor; the inductive sensor is used to detect whether the working end of the tool to be measured enters the detection range of the inductive sensor; S2: Control the tool to be measured to move in a first direction, the first direction is parallel to the direction from the fixed end to the working end of the tool to be measured, and the first direction faces the detection range; control the driving of the tool to be measured to move in the first direction through a telescopic mechanism; S3: When the inductive sensor detects that the working end enters the detection range, since the tool to be measured is made of metal, the tool to be measured will cause a change in the alternating magnetic field, thereby detecting the presence of the tool to be measured, and the inductive sensor emits a signal. According to this signal, the telescopic mechanism is used to control the tool to be measured to stop moving; S4: Obtain the judgment information of the tool to be measured, and the judgment information includes a first threshold value; wherein, the tool to be measured has a complete judgment line and a fracture judgment line, and the distance between the complete judgment line and the fracture judgment line is the wear distance X. When the tool to be measured is complete, the moving distance of the tool to be measured in the first direction from the start of movement to the stop of movement is S, and the first threshold value is the length value obtained by adding the moving distance S and the wear distance X; S5: Obtain the actual moving distance of the tool to be measured in the first direction from the start of movement to the stop of movement; S6: Compare the first threshold value with the actual moving distance of the tool to be measured; S7: If the actual moving distance is greater than the first threshold value, it is determined that the tool to be measured is broken; if the judgment result is that the tool to be measured is not broken, then compare the second threshold value with the actual moving distance of the tool to be measured in the first direction. The second threshold value is the moving distance S of the tool to be measured in the first direction from the start of movement to the stop of movement when the tool to be measured is complete; if the moving distance is greater than the second threshold value, it is determined that the tool to be measured is worn, and if the moving distance is equal to the second threshold value, it is determined that the tool to be measured is complete.

2. The method for detecting a broken tool according to claim 1, wherein Before controlling the tool to be measured to move in the first direction, it further includes: Obtain the tool length of the tool to be measured; Determine the detection position according to the tool length; Control the inductive sensor to move to the detection position.

3. The method for detecting a broken tool according to claim 1, characterized in that Before controlling the tool to be measured to move in the first direction, it includes: Obtain the inspection position, and the direction from the inspection position to the detection range is parallel to the first direction; Obtain the working position of the tool to be measured; Control the tool to be measured to move from the working position to the inspection position.

4. The tool breakage detection method according to claim 2, characterized in that, Before obtaining the judgment information of the tool to be measured and obtaining the tool length of the tool to be measured, it further includes: Obtain the tool number of the tool to be measured; Match the data set corresponding to the tool number from the database, and the data set includes the judgment information and the tool length corresponding to the tool to be measured.

5. According to the broken tool detection method described in claim 1, it is characterized in that: If the moving distance of the tool to be measured in the first direction is a constant value, then replace S3 to S7 with judging whether the working end enters the detection range; If the working end enters the detection range, it is determined that the tool to be measured is complete; If the working end does not enter the detection range, it is determined that the tool to be tested is broken.

6. A sheet processing device, characterized in that, Including: A broken tool detection module that automatically detects a broken tool by the broken tool detection method according to Claim 1, and a tool to be tested; The fixed end of the tool to be tested is fixed to the telescopic end of the telescopic mechanism; The tool to be tested is used for processing a plate.

7. A sheet processing device according to claim 6, characterized in that, It further includes: A placement flat plate, a slider, a guide rail, and a moving cylinder; The placement flat plate includes a placement plane, and a rectangular long hole is provided on the placement plane; The slider is slidably connected to the guide rail, and the extending direction of the guide rail is perpendicular to the telescopic direction of the telescopic end of the telescopic mechanism; The extending direction of the rectangular long hole is parallel to the extending direction of the guide rail; The telescopic mechanism is fixed to the slider, the tool to be tested corresponds to the rectangular long hole, and the first direction is perpendicular to the placement plane; The placement flat plate is located between the moving cylinder and the telescopic mechanism, an inductive sensor is fixed to the telescopic rod of the moving cylinder, and the telescopic direction of the telescopic rod is perpendicular to the placement plane.

8. A sheet processing device according to claim 7, characterized in that, It further includes: A pressing cylinder and a pressing wheel structure; The moving direction of the piston rod of the pressing cylinder is perpendicular to the placement plane; The pressing wheel structure includes a fixing plate, a pushing cylinder, a plurality of rotating shafts, and a plurality of pressing wheels; The fixing plate is fixed to the pushing rod of the pushing cylinder, and the pushing direction of the pushing rod is perpendicular to the placement plane; The pressing wheel is rotatably connected to the fixing plate through the rotating shaft, and the axis of the rotating shaft is parallel to the placement plane; The plane tangent to the circumferential surfaces of the plurality of pressing wheels is parallel to the placement plane.

Images