Pressure foot wear detection method, drill, drilling apparatus

Abstract

The application discloses a pressure foot wear detection method, a drilling machine and a drilling device. The detection method comprises the following steps: adjusting the position of a main shaft to gradually approach the pressure foot to a detection plane; when the pressure foot and the detection plane reach a preset contact state, measuring a first position Zn of the main shaft; obtaining a first displacement, which is the distance between the first position Zn and a standard position Z0; judging whether the first displacement exceeds a first preset wear Ma; obtaining a second position Zn-1 of the main shaft measured when the pressure foot and the detection plane reached the preset contact state in the last time; obtaining a second displacement, which is the distance between the first position Zn and the second position Zn-1; judging whether the second displacement exceeds a second preset wear Mb; the detection accuracy is high, and the influence of the damaged pressure foot on the accuracy can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of numerical control drilling equipment, and particularly relates to a pressure foot wear detection method, a drilling machine and a drilling equipment. BACKGROUND

[0002] When the numerical control drilling machine drills, the pressure foot first contacts the processed plate and directly presses the plate surface, and the wear amount of the pressure foot directly affects the drilling precision, which is an important index of the drilling machine processing.

[0003] At present, the wear amount of the pressure foot is determined by the operator through the experience of processing the plate in the past, or the pressure foot is replaced when the drilling precision problem is found to be caused by the serious wear of the pressure foot. When the problem occurs, the pressure foot has caused the drilling precision to decrease, and the replacement of the pressure foot will inevitably affect the quality of a part of the production. According to the experience of the operator to determine whether to replace the pressure foot, there is a phenomenon that the operator forgets or makes inaccurate judgments, which seriously affects the processing and leads to the scrap of the production plate. SUMMARY

[0004] The present application aims to at least solve the problem in the prior art that the operator forgets or makes inaccurate judgments according to the experience of the operator to determine whether to replace the pressure foot, which seriously affects the processing and leads to the scrap of the production plate. To this end, the present application provides a pressure foot wear detection method with high accuracy, a drilling machine and a drilling equipment.

[0005] According to the pressure foot wear detection method of the present application, the following steps are included:

[0006] S1: Adjust the position of the main shaft so that the pressure foot moving synchronously with the main shaft is opposite to the detection plane on the workbench;

[0007] S2: Continue to move the main shaft so that the pressure foot gradually approaches the detection plane, and when the pressure foot and the detection plane reach a preset contact state, the pressure foot stops moving, and the first position Zn of the main shaft is measured;

[0008] S3: Obtain a first displacement amount, which is the distance between the first position Zn and a standard position Z0, and determine whether the first displacement amount exceeds a first preset wear amount Ma. When it is determined that the first displacement amount exceeds the first preset wear amount Ma, a first warning signal is sent. When it is determined that the first displacement amount does not exceed the first preset wear amount Ma, step S4 is performed;

[0009] S4: obtaining a second position Zn-1 of the main shaft when the pressure foot last time reached the preset contact state with the detection plane, obtaining a second displacement, the second displacement being a distance between the first position Zn and the second position Zn-1, and judging whether the second displacement exceeds a second preset wear amount Mb.

[0010] The wear detection method obtains the first displacement and the second displacement through the distance difference between the first position Zn and the standard position Z0 when the pressure foot contacts the detection plane and the distance difference between the second position Zn-1 and the first position Zn when the pressure foot last time contacts the detection plane, judges the wear of the pressure foot and whether the pressure foot has sudden abnormal wear through the first displacement and the second displacement, has high detection accuracy, and can synchronously detect the overall wear amount of the pressure foot and the wear amount compared with the last use, provides effective data support for whether to replace the pressure foot and whether the pressure foot has sudden damage, and can effectively reduce the accuracy influence caused by the damage of the pressure foot.

[0011] According to the pressure foot wear detection method, when it is judged that the first displacement exceeds the first preset wear amount Ma in step S3, a first alarm signal is sent; and when it is judged that the first displacement does not exceed the first preset wear amount Ma, the step S4 is performed.

[0012] It should be noted that the first preset wear amount Ma is a maximum value of the overall wear amount of the pressure foot, that is, a maximum value of the wear amount of the pressure foot at the current detection compared with the pressure foot in the initial standard state, and the second preset wear amount Mb is a maximum value of the wear amount of the pressure foot at the current detection compared with the pressure foot at the last detection.

[0013] When the first displacement exceeds the first preset wear value Ma, it indicates that the overall wear of the pressure foot exceeds the preset wear requirement, the first alarm signal can timely prompt the operator, avoids continuing to use the pressure foot with serious wear, and affects the drilling accuracy.

[0014] Optionally, when it is judged that the second displacement exceeds the second preset wear amount Mb, a second alarm signal is sent; the second preset wear amount Mb is smaller than the first preset wear amount Ma, the second alarm signal is different from the first alarm signal, the first alarm signal is used for reminding to replace the pressure foot, and the second alarm signal is used for reminding to detect the pressure foot and the detection plane.

[0015] When the second displacement exceeds the second preset wear amount Mb, it indicates that the wear amount of the pressure foot compared with the last detection exceeds the preset wear requirement, and the second alarm signal can timely prompt the operator to check the pressure foot.

[0016] Wherein, when the first warning signal is sent, it indicates that the overall wear of the pressure foot exceeds the preset wear requirement, and the pressure foot needs to be replaced; when the second warning signal is sent, it indicates that the pressure foot has obvious wear after the last use or the detection plane has damage, and the pressure foot and the detection plane need to be checked, and on the basis of detection of the pressure foot each time, whether the pressure foot needs to be replaced and whether the pressure foot needs to be checked can be warned at the last detection, and through the warning mechanism, the operator can be effectively reminded to avoid missed detection.

[0017] According to the pressure foot wear detection method, the preset contact state in step S2 is obtained by the photoelectric sensor or the pressure sensor.

[0018] Optionally, when the photoelectric sensor is used to obtain the preset contact state, the photoelectric sensor is arranged on the chip suction cover, the pressure foot is arranged at the bottom of the chip suction cover, and the sensing part of the photoelectric sensor is synchronously lifted and lowered with the main shaft; or the sensing part of the photoelectric sensor is arranged on the chip suction cover, the photoelectric sensor is synchronously lifted and lowered with the main shaft, and when the sensing part shields the detection port of the photoelectric sensor, a trigger signal is generated to achieve the preset contact state.

[0019] The contact state of the pressure foot is monitored by the photoelectric sensor, the monitoring precision is high, the reaction is fast, and the monitoring is non-contact, so that the damage of the components caused by contact with the detection platform can be effectively avoided, the structure of the photoelectric sensor is simple, and the installation mode is flexible and various, and the installation position can be selected according to the actual situation.

[0020] Optionally, when the pressure sensor is used to obtain the preset contact state, the pressure sensor is located on the detection plane, and when the pressure foot moves to press the pressure sensor and exceeds the preset pressure threshold, a trigger signal is generated to achieve the preset contact state.

[0021] The contact state of the pressure foot is monitored by the pressure sensor, the pressure sensor has small volume, light mass, high accuracy, good temperature characteristics, and good adaptability to the environment temperature, and is convenient to install.

[0022] According to the drilling machine, the position of the main shaft is adjusted by the adjusting module, so that the pressure foot is opposite to the detection plane on the workbench, and the pressure foot gradually approaches the detection plane.

[0023] a detection module for detecting whether the pressure foot reaches a preset contact state with the detection plane, the detection module being electrically connected with the adjustment module, and the adjustment module stopping the spindle from moving when the detection module detects that the preset contact state is reached;

[0024] a data acquisition module for recording a first position Zn of the spindle when the preset contact state is reached;

[0025] a comparison module for comparing a first displacement between the first position Zn and a standard position Z0, and comparing whether the first displacement exceeds a first preset wear Ma; and for comparing a second displacement between the first position Zn and a second position Zn-1, the second position Zn-1 being a position of the spindle recorded when the pressure foot and the detection plane reached the preset contact state last time; and for comparing whether the second displacement exceeds a second preset wear Mb, the second preset wear Mb being less than the first preset wear Ma.

[0026] The drilling machine provided by the application adjusts the pressure foot to be opposite to the detection plane in the horizontal direction, and then adjusts the pressure foot to be in contact with the detection plane in the vertical direction. When the pressure foot is in contact with the detection plane, the monitoring module controls the adjustment module to stop moving the pressure foot, and the data detection module records the current position data of the spindle, i.e., the first position Zn. The comparison module compares the current position data with the standard position data (the standard position Z0), and compares the current position data with the last position data (the second position Zn-1), obtains comparison data, and compares the comparison data with preset data, so as to judge the wear of the pressure foot. The operation process is simple and convenient, the wear of the pressure foot is judged by data, the judgment result is more accurate, the overall wear and the single wear of the pressure foot can be obtained through the detection result, the wear of the pressure foot can be more comprehensively evaluated, and the influence of the wear of the pressure foot on the drilling precision is greatly reduced.

[0027] According to the drilling machine provided by the embodiment of the application, the drilling machine further comprises an alarm module for sending a first alarm signal when the first displacement exceeds the first preset wear Ma, and for sending a second alarm signal when the second displacement exceeds the second preset wear Mb.

[0028] According to the drilling machine provided by the embodiment of the application, the drilling machine further comprises an optical sensor or a pressure sensor for detecting whether the preset contact state is reached.

[0029] According to the drilling machine of the embodiment of the present application, when the photoelectric sensor is used to obtain the preset contact state, the photoelectric sensor is arranged on the chip suction cover, the pressure foot is arranged at the bottom of the chip suction cover, and the sensing part of the photoelectric sensor is synchronously lifted and lowered with the main shaft; or, the sensing part of the photoelectric sensor is arranged on the chip suction cover, the photoelectric sensor is synchronously lifted and lowered with the main shaft, and when the sensing part shields the detection port of the photoelectric sensor, a trigger signal is generated to achieve the preset contact state.

[0030] When the pressure sensor is included, the pressure sensor is installed on the detection plane.

[0031] According to the drilling machine of the embodiment of the present application, the drilling machine further comprises a storage module configured to store data acquired by the data acquisition module and the comparison module, and a display module configured to retrieve and display the data stored in the storage module.

[0032] According to the drilling machine of the embodiment of the present application, the drilling machine comprises one or more processors and a memory configured to store one or more programs, and when the one or more programs are executed by the one or more processors, the one or more processors implement the pressure foot wear detection method.

[0033] The drilling machine has high detection precision, can synchronously detect the total wear amount of the pressure foot and the wear amount compared with the last use, provides effective data support for whether to replace the pressure foot and whether the pressure foot is suddenly damaged, and can effectively reduce the precision influence caused by the damage of the pressure foot.

[0034] Additional aspects and advantages of the present application will be described in the following description and become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0035] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0036] Figure 1 An exemplary flowchart of the pressure foot wear detection method provided by the embodiment of the present application is shown.

[0037] Figure 2 An operation flowchart of the pressure foot wear detection method provided by the embodiment of the present application is shown.

[0038] Figure 3 A perspective structural schematic diagram of the drilling machine provided by the embodiment of the present application is shown.

[0039] Figure 4 A front structural schematic diagram of the drilling machine provided by the embodiment of the present application is shown.

[0040] Figure 5 A front structure schematic diagram of a drilling machine provided with a pressure sensor is shown.

[0041] Figure 6 A system structure schematic block diagram of a drilling machine provided with a photoelectric sensor is shown.

[0042] Figure 7 A relationship block diagram of a pressure sensor of a drilling machine, a data acquisition module and an adjustment module is shown.

[0043] Reference signs:

[0044] 1000 - drilling machine,

[0045] 10 - workbench, 101 - detection plane,

[0046] 20 - pressure foot,

[0047] 30 - drill head mechanism, 301 - main shaft, 302 - drill head,

[0048] 40 - adjustment module,

[0049] 50 - data acquisition module,

[0050] 60 - detection module, 601 - grating ruler, 602 - reading head,

[0051] 70 - comparison module,

[0052] 80 - alarm module,

[0053] 90 - photoelectric sensor, 901 - sensing part, 902 - detection port, 903 - pressure sensor,

[0054] 100 - storage module,

[0055] 110 - display module,

[0056] 120 - chip suction cover. DETAILED DESCRIPTION

[0057] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0058] In the description of the application, it needs to be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the features defined with "first", "second" can be explicitly or implicitly include one or more of the features. In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0059] In the description of the application, it needs to be explained that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0060] It should be noted that the embodiments and features in the embodiments in the application can be combined with each other without conflict. The application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0061] The pressure foot 20 wear detection method of the embodiment of the application will be described below with reference to the drawings.

[0062] It can be understood that in the drilling machine 1000 device, when drilling is needed, the main shaft 301 drives the drill bit 302 to rotate, so that the drill bit 302 performs cutting and the like. Before cutting, the drill bit 302 needs to be positioned relative to the cutting target (such as a circuit board), and the pressure foot 20 is pressed on the cutting target, so that the drilling position of the drill bit 302 relative to the cutting target does not change when the drill bit 302 drills. However, in the long-term use of the drilling machine 1000, the pressure foot 20 is prone to wear, which causes the drilling position to change, affecting the machining precision.

[0063] For example, when drilling a PCB (Printed Circuit Board), in order to ensure that the drill bit 302 does not slide when drilling into the board, the pressure foot 20 is usually installed to press the board tightly before processing the board. However, the pressure foot 20 will wear out after a period of use, causing the distance between the drill bit 302 and the pressure foot 20 to become shorter, so that the drill bit 302 contacts the board too early, affecting the drilling accuracy and reducing the production quality. At present, the operator usually judges the wear of the pressure foot 20 according to experience, and the judgment of the wear amount is not accurate enough, which is easy to misjudge and cause damage to the drill bit 302 or reduce the drilling accuracy.

[0064] Therefore, the present application provides a high-precision pressure foot 20 wear detection method and related equipment, which can accurately judge the wear of the pressure foot 20. Then the operator can detect the equipment or replace the pressure foot 20 according to the judgment result of the wear of the pressure foot 20.

[0065] It should be noted that the pressure foot 20 wear detection method can be applied to any equipment with a pressure foot 20, such as a drilling machine 1000 or a multi-drilling machine. Here, the rotary tool can be a drill bit 302. In the following explanation of the pressure foot 20 wear detection method, the equipment is taken as the drilling machine 1000, the cutting tool is taken as the drill bit 302, the cutting target is taken as the board, and the product is taken as the PCB.

[0066] Referring to Figure 1 , the pressure foot 20 wear detection method according to the embodiment of the present application comprises the following steps:

[0067] S1: Adjust the position of the main shaft 301 so that the pressure foot 20 moving synchronously with the main shaft 301 is opposite to the detection plane 101 on the workbench 10;

[0068] S2: Continue to move the main shaft 301 so that the pressure foot 20 gradually approaches the detection plane 101, and when the pressure foot 20 and the detection plane 101 reach a preset contact state, the pressure foot 20 stops moving, and the first position Zn of the main shaft 301 is measured;

[0069] S3: Obtain the first displacement, which is the distance between the first position Zn and the standard position Z0, and judge whether the first displacement exceeds the first preset wear amount Ma. When it is judged that the first displacement exceeds the first preset wear amount Ma, a first warning signal is issued; when it is judged that the first displacement does not exceed the first preset wear amount Ma, step S4 is performed;

[0070] S4: obtaining a second position Zn-1 of the main shaft 301 when the previous pressure foot 20 reaches the preset contact state with the detection plane 101, obtaining a second displacement, the second displacement being a distance between the first position Zn and the second position Zn-1, and determining whether the second displacement exceeds a second preset wear amount Mb.

[0071] In step S1, the position of the main shaft 301 is adjusted. Since the pressure foot 20 and the drill bit 302 are both connected to the main shaft 301, the position of the drill bit 302 relative to the plate can be adjusted, and the position of the pressure foot 20 relative to the detection plane 101 of the workbench 10 can also be adjusted.

[0072] Here, it is assumed that the feed direction of the main shaft 301 is Z direction when the drill bit 302 is drilling. A Dikar coordinate system can be established based on the Z direction, which includes X direction, Y direction and Z direction. When the device performs step S1, the position of the main shaft 301 in X direction and Y direction can be adjusted, and the adjustment amount can be zero, positive or negative, which is not limited here.

[0073] For example, when the position of the main shaft 301 is adjusted, the movement of the main shaft 301 can be driven by X-axis motor, Y-axis motor and Z-axis motor respectively to drive the main shaft 301 to move in X direction, Y direction and Z direction respectively. Hereinafter, it is assumed that X direction and Y direction are horizontal movement directions perpendicular to each other, and Z direction is vertical movement direction.

[0074] Before step S1, the determination of the standard position Z0 is performed first. The standard position Z0 can be a predetermined value pre-stored in the device by the device manufacturer, or can be determined by the production manufacturer using the device.

[0075] For example, a standard pressure foot 20, i.e. a pressure foot 20 not subjected to wear, can be used. The X-axis motor and the Y-axis motor are used to drive the main shaft 301 to move, so that the standard pressure foot 20 moves to the top of the detection plane 101, and then the Z-axis motor is driven to move the pressure foot 20 downward. When the pressure foot 20 contacts the detection plane 101 and reaches the preset contact state, the Z-axis motor stops driving, and the pressure foot 20 stops moving. The current position of the main shaft 301 measured is the standard position Z0.

[0076] When step S1 is performed, the pressure foot 20 is a normally used pressure foot 20. Similarly, the X-axis motor and the Y-axis motor can be used to move horizontally, so that the pressure foot 20 on the main shaft 301 moves to the top of the detection plane 101. When step S2 is performed, the Z-axis motor is used to drive the pressure foot 20 to move toward the detection plane 101, and the first position Zn is measured.

[0077] It should be noted that the first preset wear amount Ma is the maximum value of the overall wear amount of the pressure foot 20, that is, the maximum value of the wear amount of the pressure foot 20 in the current detection compared with the pressure foot 20 in the initial standard state. The second preset wear amount Mb is the maximum value of the wear amount of the pressure foot 20 in the current detection compared with the pressure foot 20 in the last detection. When the first displacement amount exceeds the first preset wear value Ma, it indicates that the overall wear of the pressure foot 20 exceeds the preset wear requirement. When the second displacement amount exceeds the second preset wear amount Mb, it indicates that the wear amount of the pressure foot 20 compared with the last detection exceeds the preset wear requirement.

[0078] The first displacement amount and the second displacement amount are obtained by the distance difference between the first position Zn when the pressure foot 20 contacts the detection plane 101 and the standard position Z0, and the distance difference between the second position Zn-1 when the pressure foot 20 contacts the detection plane 101 last time and the first position Zn. By comparing the first displacement amount with the first preset wear amount Ma, and comparing the second displacement amount with the second preset wear amount Mb, the overall wear amount of the pressure foot 20 and the wear amount compared with the last use can be detected synchronously, that is, the wear amount compared with the last use can be obtained synchronously while detecting the overall wear amount of the pressure foot 20, which has high detection accuracy and is more comprehensive, and provides effective data support for whether to replace the pressure foot 20 and whether the pressure foot 20 is suddenly damaged.

[0079] In the scheme of the present application, when the pressure foot 20 wear detection is in step S3, if it is judged that the first displacement amount exceeds the first preset wear amount Ma, the detection can be stopped immediately (that is, S4 is not performed any more), and then the pressure foot 20 is checked or directly replaced. If it is judged that the first displacement amount exceeds the first preset wear amount Ma in step S3, step S4 can still be continued, and then the subsequent is comprehensively considered according to the results of steps S3 and S4.

[0080] According to some embodiments of the present application, as shown in Figure 2 In step S3, when it is judged that the first displacement amount exceeds the first preset wear amount Ma, a first alarm signal is issued; when it is judged that the first displacement amount does not exceed the first preset wear amount Ma, step S4 is performed.

[0081] The first alarm signal can prompt the operator in time to avoid continuing to use the pressure foot 20 whose overall wear exceeds the preset requirement, which affects the drilling accuracy. When the first alarm signal is not issued, it indicates that the overall wear of the pressure foot 20 in the current state is within the preset range, and the pressure foot 20 can still be used.

[0082] Here, the first alarm signal can be sound, light, pattern, or character, etc. After the first alarm signal is sent, it can be operated by the operator, or it can be accepted by other devices of the equipment and then operated, for example, the equipment has an automatic replacement machine, which can automatically replace the pressure foot 20.

[0083] According to some embodiments of the present application, as shown in Figure 2 When it is judged that the second displacement amount exceeds the second preset wear amount Mb, a second alarm signal is sent.

[0084] The second preset wear amount Mb is less than the first preset wear amount Ma.

[0085] The second alarm signal is different from the first alarm signal, and the first alarm signal is used to remind the replacement of the pressure foot 20, and the second alarm signal is used to remind the detection of the pressure foot 20 and the detection plane 101.

[0086] When the second alarm signal is sent, it means that the wear amount of the pressure foot 20 compared with the last detection exceeds the preset wear requirement, at this time, the pressure foot 20 may have obvious abnormal wear after the last use, for example, there are chippings or burrs, etc. Or the detection plane 101 is damaged, at this time, the second alarm signal is sent to prompt the operator to check the pressure foot 20 and the detection plane 101 in time, so as to avoid affecting the accuracy of subsequent drilling.

[0087] And, in order to distinguish the first alarm signal and the second alarm signal, different alarm information can be used. For example, the first alarm signal is a long alarm of the alarm, and the second alarm signal is an intermittent alarm of the alarm, so that the operator can directly judge the content of the alarm according to the alarm signal heard, saving the process of checking data by the operator, and simplifying the subsequent operation.

[0088] According to some embodiments of the present application, in step S2, the preset contact state is obtained by the photoelectric sensor 90 or the pressure sensor. These two kinds of sensors have simple structure and are very suitable for the working mode of the pressure foot 20, which can quickly detect the result and improve the detection sensitivity.

[0089] In some specific embodiments, when a photoelectric sensor 90 is used to obtain a preset contact state, the photoelectric sensor 90 is mounted on the spindle 301, and the sensing element 901 of the photoelectric sensor 90 is mounted on the dust collection cover 120, which is located below the spindle 301. The pressure foot 20 is located at the bottom end of the dust collection cover 120. When the sensing element 901 moves with the dust collection cover 120 to block the detection port 902 of the photoelectric sensor 90, a trigger signal is generated to achieve the preset contact state. That is, the photoelectric sensor 90 determines whether the pressure foot 20 is completely pressed on the detection plane 101 by the degree of light blocking. Alternatively, the photoelectric sensor 90 is mounted on the dust collection cover 120, and the sensing element 901 of the photoelectric sensor 90 is mounted on the spindle 301. When there is relative movement between the dust collection cover 120 and the spindle 301, the sensing element 901 can move towards the photoelectric sensor 90.

[0090] In other specific embodiments, when a pressure sensor is used to obtain a preset contact state, the pressure sensor is located on the detection plane 101. When the pressure foot 20 moves to press against the pressure sensor beyond a preset pressure threshold, a trigger signal is generated to achieve the preset contact state. That is, the pressure sensor determines whether the pressure foot 20 is completely pressed against the detection plane 101 by the pressure change it experiences. This detection method can not only detect whether the pressure foot 20 is pressing against the detection plane 101, but also whether the pressure foot 20 is pressed tightly. This pressure sensor can obtain richer detection results.

[0091] Of course, the detection of whether the pressure foot 20 and the detection plane 104 have reached the preset contact state can also be achieved by other devices, such as Hall sensors or even image detection by cameras, and no limitation is made here.

[0092] A drilling machine 1000 according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

[0093] A drilling machine 1000 according to an embodiment of the present invention, such as Figure 3 - Figure 6 As shown, the system includes a base (not shown), a worktable 10, a drill mechanism 30, and a chip suction hood 120. The drill mechanism 30 includes a spindle 301 and a drill bit 302 mounted on the spindle 301. The drill mechanism 30 is movably mounted on the crossbeam of the base along the X and Z directions. The chip suction hood 120 is located below the spindle 301, and pressure feet 20 for holding the workpiece are located at the bottom of the chip suction hood 120. The worktable 10 is movably mounted on the base along the Y direction, and the PCB is placed on the worktable 10.

[0094] The drilling machine 1000 also includes an adjustment module 40 for adjusting the position of the spindle 301 so that the pressure foot 20 is directly facing the detection plane 101 on the worktable 10, and the pressure foot 20 gradually moves closer to the detection plane 101.

[0095] The drilling machine 1000 further comprises a detection module 60 for detecting whether the pressure foot 20 and the detection plane 101 reach a preset contact state, the detection module 60 is electrically connected with the adjustment module 40, and the adjustment module 40 stops the movement of the main shaft 301 when the detection module 60 detects that the preset contact state is reached. Wherein, the detection module 60 is further used for detecting the position of the current main shaft 301, and the preset contact state refers to that the pressure foot 20 and the detection plane 101 are in full contact, reaching the state of pressing the detection plane 101.

[0096] The drilling machine 1000 further comprises a data acquisition module 50 for recording the position of the main shaft 301 when the preset contact state is reached, specifically, the position at least includes a first position Zn and a second position Zn-1, the second position Zn-1 is the position of the main shaft recorded when the pressure foot and the detection plane reach the preset contact state last time. The detection module 60 transmits the detection data to the data acquisition module 50, and the data acquisition module 50 acquires and records the current data.

[0097] The drilling machine 1000 further comprises a comparison module 70 for comparing the distance between the first position Zn and the standard position Z0 to obtain a first displacement amount, and further for comparing whether the first displacement amount exceeds a first preset wear amount Ma. The comparison module 70 is further used for comparing the distance between the first position Zn and the second position Zn-1 to obtain a second displacement amount. The comparison module 70 is further used for comparing whether the second displacement amount exceeds a second preset wear amount Mb, and the second preset wear amount Mb is less than the first preset wear amount Ma.

[0098] That is to say, the drilling machine 1000 can perform the above steps S1, S2, S3 and S4 through the above adjustment module 40, detection module 60, data acquisition module 50 and comparison module 70, so that the accuracy of the wear detection of the pressure foot 20 is high and more comprehensive, and effective data support is provided for whether to replace the pressure foot 20 and check whether the pressure foot 20 is suddenly damaged.

[0099] In some embodiments, the comparison module 70 of the present application can employ a comparator, the data acquisition module 50 transmits the detected first position Zn to the comparison module 70, the comparison module 70 calculates the first displacement by the difference between the pre-recorded standard position Z0, and the second position Zn-1 recorded when the last time the pressure foot 20 is detected, and calculates the second displacement by the difference, compares the first displacement with the first preset wear amount Ma, if the first displacement is greater than or equal to the first preset wear amount Ma, the first enable signal is output, and then the second displacement is compared with the second preset wear amount Mb, if the second displacement is greater than or equal to the second preset wear amount Mb, the second enable signal is output, if the first displacement is less than the first preset wear amount Ma and the second displacement is less than the second preset wear amount Mb, no enable signal is output, and the drilling machine 1000 works normally.

[0100] The drilling machine 1000 of the present application collects the position information of the pressure foot 20 when the pressure foot 20 reaches the preset contact state with the detection plane 101 through the detection module 60 and the data acquisition module 50, and calculates the first displacement and the second displacement through the comparison module 70, obtains the overall wear of the pressure foot 20 and the wear amount of the pressure foot 20 compared with the last time, and through the comparison of the first displacement and the second displacement with the first preset wear amount Ma and the second preset wear amount Mb, it can accurately judge whether the pressure foot 20 needs to be replaced or needs to be checked, and provide accurate data support for the wear condition of the pressure foot 20, and provide an automatic detection device capable of closed-loop control, and improve the drilling accuracy and production quality of the drilling machine 1000.

[0101] According to some embodiments of the present application, the drilling machine 1000 further comprises an alarm module 80, which is used to issue a first alarm signal when the first displacement exceeds the first preset wear amount Ma. The alarm module 80 is used to issue a second alarm signal when the second displacement exceeds the second preset wear amount Mb.

[0102] The alarm module 80 is electrically connected with the comparison module, when the first displacement exceeds the first preset wear amount Ma, the comparison module transmits the first enable signal to the alarm module 80, and the alarm module 80 issues the first alarm signal. When the second displacement exceeds the second preset wear amount Mb, the comparison module transmits the second enable signal to the alarm module 80, and the alarm module 80 issues the second alarm signal.

[0103] The alarm module 80 can include a processor and an alarm, the processor receives the first enable signal and the second enable signal transmitted by the comparison module, and controls the alarm to alarm in the corresponding mode.

[0104] Further, the structure of the alarm is not limited in the present application, including but not limited to a buzzer alarm and a light source alarm. In order to distinguish the first alarm signal and the second alarm signal, the buzzer alarm can buzz for a long time after receiving the first enable signal, and buzz with intervals after receiving the second enable signal. The light source alarm can be always on after receiving the first enable signal, and flash after receiving the second enable signal.

[0105] According to an embodiment of the present application, the detection module 60 comprises a photoelectric sensor 90 or a pressure sensor for detecting whether the pressure foot 20 reaches the preset contact state.

[0106] Further, as shown in Figure 5 when the detection module 60 adopts the photoelectric sensor 90, the photoelectric sensor 90 is arranged on the main shaft 301, and the sensing part 901 of the photoelectric sensor 90 is arranged on the chip cover 120. When the sensing part 901 moves to block the detection port 902 of the photoelectric sensor 90, a trigger signal is generated to reach the preset contact state. Alternatively, the photoelectric sensor 90 is arranged on the chip cover 120, and the sensing part 901 of the photoelectric sensor 90 is arranged on the main shaft 301. Figure 7 when the detection module 60 adopts the pressure sensor, the pressure sensor is installed on the detection plane 101. When the pressure foot 20 moves to press the pressure sensor beyond the preset pressure threshold, a trigger signal is generated to reach the preset contact state.

[0107] According to some embodiments of the present application, the adjustment module 40 is a CNC system, which is electrically connected with the detection module 60 and the data acquisition module 50. The CNC system can be a MAZATROL SmoothX type, which comprises an X-axis motor and a Y-axis motor for controlling the movement of the main shaft 301 in the horizontal plane, and a Z-axis motor for controlling the movement of the main shaft 301 in the vertical plane. The main shaft 301 is driven by the X-axis motor and the Y-axis motor to move directly above the detection plane 101, and then the Z-axis motor is driven to adjust the movement of the pressure foot 20 towards the detection plane 101.

[0108] According to some embodiments of the present application, as shown in Figure 5 the detection module 60 further comprises a grating ruler 601 and a reading head 602 for measuring the position of the main shaft 301, and the data acquisition module 50 acquires the data measured by the reading head 602 and feeds back to the CNC system. The main shaft 301 is arranged on the base through a mounting plate, the grating ruler 601 can be arranged on the mounting plate, and the reading head 602 can be arranged on the main shaft 301. The reading head 602 transmits the detection data to the data acquisition module 50.

[0109] According to some embodiments of the present application, the drilling machine 1000 further comprises a storage module 100 for storing the data acquired by the data acquisition module 50 and the comparison module 70; and a display module 110 for calling and displaying the data stored in the storage module 100.

[0110] The standard position Z0, the first position Zn, the second position Zn-1, the first displacement amount, the second displacement amount, the first preset wear amount Ma and the second preset wear amount Mb are all stored in the storage module 100, and the display module 110 can be an LED or an LCD display. By displaying the acquired and processed data information on the display module 110, the operator can conveniently observe the wear information of the pressure foot 20 and judge the wear condition of the pressure foot 20.

[0111] According to an embodiment of the present application, a drilling device comprises one or more processors; a memory for storing one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned pressure foot 20 wear detection method.

[0112] It should be noted that in the description of the present application, any process or method described in the flowchart or otherwise described herein can be understood as representing a module, a segment or a part of code including executable instructions for implementing one or more steps of a specific logic function or process, and the scope of the preferred embodiments of the present application includes additional implementations in which the functions can be performed in an order other than that shown or discussed, including in a substantially simultaneous manner or in a reverse order according to the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0113] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0114] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0115] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0116] In the description of the specification, the description using the terms "embodiment", "example", and the like means that the specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. Descriptive expressions of the above terms in the specification do not necessarily refer to the same embodiment or example. Also, the specific feature, structure, material, or characteristic described can be combined in an appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification.

[0117] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A method of detecting wear of a pressure foot, characterized in that The method comprises the following steps: S1: adjusting the position of the main shaft so that the pressure foot moving synchronously with the main shaft is opposite to the detection plane on the workbench; S2: continuing to move the main shaft so that the pressure foot gradually approaches the detection plane, and when the pressure foot and the detection plane reach a preset contact state, the movement of the pressure foot is stopped, and a first position Zn of the main shaft is measured; S3: obtaining a first displacement, which is the distance between the first position Zn and a standard position Z0, and determining whether the first displacement exceeds a first preset wear Ma, and when it is determined that the first displacement exceeds the first preset wear Ma, a first warning signal is sent out; When it is determined that the first displacement does not exceed the first preset wear Ma, step S4 is performed; S4: obtaining a second position Zn-1 of the main shaft measured when the pressure foot and the detection plane reached the preset contact state in the last time, obtaining a second displacement, which is the distance between the first position Zn and the second position Zn-1, and determining whether the second displacement exceeds a second preset wear Mb; In step S4, when it is determined that the second displacement exceeds the second preset wear Mb, a second warning signal is sent out; The second warning signal is different from the first warning signal, the first warning signal is used to remind replacing the pressure foot, and the second warning signal is used to remind detecting the pressure foot and the detection plane; In step S2, the preset contact state is obtained by using a photoelectric sensor or a pressure sensor; In step S2, when the preset contact state is obtained by using the photoelectric sensor, the photoelectric sensor is arranged on a chip-removing cover, the pressure foot is arranged at the bottom of the chip-removing cover, and the sensing part of the photoelectric sensor moves synchronously with the main shaft; or the sensing part of the photoelectric sensor is arranged on the chip-removing cover, the photoelectric sensor moves synchronously with the main shaft, and when the sensing part shields the detection port of the photoelectric sensor, a trigger signal is generated to reach the preset contact state.

2. The pressure foot wear detection method according to claim 1, wherein The second preset wear Mb is less than the first preset wear Ma.

3. The pressure foot wear detection method according to claim 1, characterized in that, In step S2, when the preset contact state is obtained by using the pressure sensor, the pressure sensor is arranged on the detection plane, and when the pressure foot moves to press the pressure sensor beyond a preset pressure threshold, a trigger signal is generated to reach the preset contact state.

4. A drill comprising a table, a drill head mechanism, a pressure foot for pressing against a workpiece, the drill head mechanism comprising a spindle and a drill head mounted on the spindle, characterised in that, Further comprising: An adjusting module, configured to adjust the position of the main shaft so that the pressure foot is opposite to the detection plane on the workbench, and the pressure foot gradually approaches the detection plane; A detection module, configured to detect whether the pressure foot and the detection plane reach a preset contact state, the detection module is electrically connected with the adjusting module, and the adjusting module stops the movement of the main shaft when the detection module detects that the preset contact state is reached. a data collection module configured to record a position of the spindle when the pressure foot reaches a preset contact state with the detection plane, the position including a first position Zn and a second position Zn-1, the second position Zn-1 being a position of the spindle recorded when the pressure foot reaches the preset contact state with the detection plane last time; a comparison module configured to compare a distance between the first position Zn and a standard position Z0 to obtain a first displacement amount, and further configured to compare whether the first displacement amount exceeds a first preset wear amount Ma; and further configured to compare a distance between the first position Zn and the second position Zn-1 to obtain a second displacement amount, and further configured to compare whether the second displacement amount exceeds a second preset wear amount Mb, the second preset wear amount Mb being less than the first preset wear amount Ma; an alarm module configured to send a first alarm signal when the first displacement amount exceeds the first preset wear amount Ma, and further configured to send a second alarm signal when the second displacement amount exceeds the second preset wear amount Mb; the detection module includes a photoelectric sensor or a pressure sensor configured to detect whether the pressure foot reaches the preset contact state; when the photoelectric sensor is used to obtain the preset contact state, the photoelectric sensor is arranged on a chip-removing cover, the pressure foot is arranged at a bottom of the chip-removing cover, and a sensing part of the photoelectric sensor is synchronously moved with the spindle; or, the sensing part of the photoelectric sensor is arranged on the chip-removing cover, the photoelectric sensor is synchronously moved with the spindle, and a trigger signal is generated when the sensing part shields a detection port of the photoelectric sensor to reach the preset contact state.

5. The drill according to claim 4, characterized in that when the pressure sensor is included, the pressure sensor is installed on the detection plane.

6. A drilling apparatus, characterized by comprising: one or more processors; a memory configured to store one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the pressure foot wear detection method according to any one of claims 1-3.

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