A machine tool broken tool detection device and detection method

Abstract

The invention discloses a machine tool broken tool detection device and a detection method, and relates to the technical field of machine tool broken tool detection. The detection device comprises a frame, a shifting mechanism, a detection mechanism, a controller and an early warning module, wherein the shifting mechanism is arranged on the frame, and the output end of the shifting mechanism is transmission-connected with a mounting seat, and a tool head is mounted on the mounting seat facing the side of the workbench; the detection mechanism comprises a detection driving member and the detection mechanism are arranged in pairs, and a pressure sensor and a laser sensor are respectively arranged on the output end of the detection driving member, the detection driving member is used to drive the laser sensor to swing from an initial position to a first detection position, and the detection driving member is used to drive the pressure sensor to swing from an initial position to a second detection position; the controller is used to obtain a diagnosis result of the tool head according to the electrical signal information analysis of the pressure sensor and the laser sensor; the early warning module is used to control the operation state of the machine tool according to the diagnosis result; the detection device can dynamically detect the broken tool and skew defects of the tool head.

Description

Technical Field

[0001] The invention belongs to the technical field of machine tool broken tool detection, and in particular relates to a machine tool broken tool detection device and a detection method. Background Art

[0002] During the machining process, especially when using CNC machine tools, it is easy for the tool to break or tilt, but the machine tool still continues to process according to the predetermined path. At this time, the actual position of the tool does not match the tool position set in the machine tool control system, which may cause the tool to collide with the workpiece or the machine tool body, resulting in a collision. This problem may not only damage the machine tool, but also affect the machining accuracy, causing production interruptions, equipment damage and reduced production efficiency.

[0003] When existing tool breakage detection equipment monitors the tool in real time, the detector is fixed in position and cannot detect defects when the tool head is skewed, thereby increasing the risk of the tool tip deviating from the established trajectory and colliding with the machine or even breaking the tool during the next processing. Summary of the invention

[0004] The purpose of the present invention is to provide a machine tool broken tool detection device and detection method with simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] The first aspect of the present invention discloses a machine tool broken tool detection device, comprising:

[0007] A frame, wherein a workbench is provided on the frame, and the workbench is used to place a workpiece to be processed;

[0008] A shifting mechanism, wherein the shifting mechanism is arranged on the frame, an output end of the shifting mechanism is drivingly connected to a mounting seat, and a cutter head is installed on a side of the mounting seat facing the workbench;

[0009] The detection mechanism includes a detection drive, a pressure sensor and a laser sensor. The detection mechanisms are arranged in pairs. The output ends of the detection drive are respectively provided with a pressure sensor and a laser sensor. The detection drive is used to drive the laser sensor to swing from an initial position to a first detection position, and the detection drive is used to drive the pressure sensor to swing from an initial position to a second detection position, wherein the pressure sensor at the second detection position abuts against the cutter head shifted to the detection position.

[0010] A controller, wherein the controller is electrically connected to the pressure sensor and the laser sensor, and the controller is used to analyze the swing angular displacement of the pressure sensor and the laser sensor according to the electrical signals of the pressure sensor and the laser sensor, respectively, to obtain a diagnosis result of the cutter head;

[0011] The early warning module is used to control the operating status of the machine tool according to the diagnosis results.

[0012] As a further optimization scheme of the present invention, the detection drive component includes a first motor, a driving gear, a driven gear, a main shaft and a swing arm. The first motors arranged in pairs are fixedly arranged on one side of the frame through a support plate. The output end of the first motor is fixedly connected to the driving gear, and the driving gear is meshed with the driven gear. The rotating shafts of the driving gear and the driven gear are respectively rotatably connected to the cantilever, and the cantilever is fixedly arranged on the support plate. The output end of the rotating shaft of the driven gear is fixedly connected to the main shaft, and the end of the main shaft away from the driven gear is fixedly connected to the swing arm, and the end of the swing arm away from the main shaft is fixedly connected to the swing rod. The pressure sensor and the laser sensor are respectively arranged on the swing rod, and along the swing radius direction of the swing rod, the laser sensor is located on the side of the pressure sensor close to the main shaft.

[0013] As a further optimization scheme of the present invention, an angular displacement detector is arranged on the rotating shaft of the driven gear, and the angular displacement detector is used to detect the swing angular displacement of the rocker arm. The swing angular displacement of the rocker arm is the swing angular displacement of the pressure sensor and the laser sensor, wherein the swing angular displacement of the laser sensor located at the first detection position is smaller than the swing angular displacement of the pressure sensor located at the second detection position.

[0014] As a further optimization solution of the present invention, the meshing transmission ratio of the driving gear and the driven gear is greater than 1.

[0015] As a further optimization scheme of the present invention, the shift mechanism includes a shift assembly, a shift seat and a tool bit feeding assembly, wherein the shift assembly is arranged on the frame, the output end of the shift assembly is transmission connected to the shift seat, and a tool bit feeding assembly is arranged on the shift seat, the output end of the tool bit feeding assembly is transmission connected to the mounting frame, and the mounting seat is arranged on the mounting frame, wherein the shift assembly is used to drive the shift seat to shift linearly in a horizontal direction, and the tool bit feeding assembly is used to drive the mounting frame to shift linearly in a vertical direction.

[0016] As a further optimization scheme of the present invention, the shift assembly includes a second motor, a screw rod, a slider, a slide seat and a slide rail. The second motor is fixedly set on the frame, the output end of the second motor is fixedly connected with the screw rod, the slider is threadedly connected to the screw rod, the slider is fixedly set on the shift seat, the side of the shift seat is fixedly connected with the slide seat, the slide seat is slidably connected to the slide rail, and the slide rail is fixedly set on the frame.

[0017] As a further optimization solution of the present invention, the frame has a horizontal mounting surface and a vertical mounting surface, the second motor is mounted on the horizontal mounting surface of the frame, and the slide rail is fixedly arranged on the vertical mounting surface of the frame.

[0018] As a further optimization solution of the present invention, an isolation cover is fixedly provided on one side of the displacement seat facing the vertical mounting surface, and the isolation cover extends along the horizontal displacement direction of the displacement seat.

[0019] The second aspect of the present invention discloses a machine tool broken tool detection method, using the above-mentioned machine tool broken tool detection device, the detection method comprises the following steps:

[0020] S1. The tool head to be inspected is shifted from the processing position to the inspection position by a shifting mechanism, and the end of the tool head to be inspected is located between the paired inspection mechanisms;

[0021] S2, starting the first motor arranged in pairs, and causing the swing rod to swing around the rotation axis of the driven gear through the meshing transmission of the driving gear and the driven gear, and the swing rod drives the laser sensor to swing from the initial position to the first detection position, and the swing rod drives the pressure sensor to swing from the initial position to the second detection position, wherein the pressure sensor located at the second detection position abuts against the cutter head shifted to the detection position;

[0022] S3, obtaining electrical signal information of the pressure sensor and the laser sensor through the controller, and correspondingly analyzing the swing angular displacement of the pressure sensor and the laser sensor to obtain a diagnosis result of the cutter head;

[0023] S4. Control the operating status of the machine tool according to the diagnosis results through the early warning module.

[0024] As a further optimization scheme of the present invention, in step S3, when the swing arm drives the laser sensor to swing to the first detection position, if the controller does not receive the electrical signal information of the tip of the tool head detected by the laser sensor, the controller controls the first motor to stop driving and outputs the diagnosis result of the tool head breakage, and then the early warning module controls the machine tool to stop running according to the diagnosis result, and the tool head is shifted from the detection position to the tool changing position under the transmission of the shifting mechanism;

[0025] When the pendulum arm drives the laser sensor to swing to the first detection position, when the controller receives the electrical signal information sent by the laser sensor that the tip of the tool head is detected, the controller controls the first motor to continue driving, so that the pendulum arm drives the pressure sensor to swing to the second detection position. If the swing angular displacement values ​​of the pendulum arms arranged in pairs are not equal; or, the swing angular displacement values ​​of the pendulum arms arranged in pairs are equal and not equal to the preset value, the controller outputs the diagnosis result of the tool head skew, and then, the early warning module controls the machine tool to stop running according to the diagnosis result, and under the transmission of the shifting mechanism, the tool head shifts from the detection position to the tool changing position.

[0026] The present invention has at least the following beneficial effects: a machine tool tool broken tool detection device and detection method provided by the present invention, the machine tool tool broken tool detection device is provided with a frame, a shift mechanism, a detection mechanism, a controller and an early warning module, and uses a swing rod to drive the laser sensor to swing to a first detection position, first detects the tip of the tool head, and judges and analyzes whether the tool head has a broken head defect, and when the tool head is not broken, continues to use the swing rod to drive the pressure sensor to swing to a second detection position to detect the skew defect of the tool head, thereby dynamically detecting various defects of the tool head, and using the early warning module to control the operating state of the machine tool according to the above-mentioned diagnosis result of the tool head, thereby reminding the operator to replace the tool head, avoiding the tool head from processing in a skewed state, thereby reducing the risk of the tool head colliding with the machine or even breaking due to the tool tip deviating from the established trajectory during the next processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 The present invention Figure 1 Enlarged view of point C in the middle;

[0029] Figure 3 The present invention Figure 1 A schematic diagram of the partial structure of the side surface;

[0030] Figure 4 It is a structural schematic diagram of the detection mechanism of the present invention;

[0031] Figure 5 The present invention Figure 4 Enlarged view of point A in the middle;

[0032] Figure 6 is a schematic diagram of the top view of the structure when the detection mechanism of the present invention is located at the detection position;

[0033] Figure 7 The present invention Figure 6 Enlarged view of point B in the middle;

[0034] Figure 8 It is a schematic diagram of the local structure of the swing rod of the present invention at the initial position and the detection position.

[0035] In the figure: 1. detection mechanism; 11. support plate; 111. cantilever; 12. first motor; 13. driving gear; 14. driven gear; 15. main shaft; 16. swing arm; 161. swing rod; 17. pressure sensor; 18. laser sensor; 2. shift assembly; 21. second motor; 22. lead screw; 23. slider; 24. slide seat; 25. slide rail; 3. shift seat; 4. cutter head feeding assembly; 5. controller; 6. isolation cover; 7. mounting frame; 71. mounting seat; 72. cutter head; 8. workbench; 9. frame. DETAILED DESCRIPTION

[0036] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0037] In one embodiment, if Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the present invention provides a machine tool broken tool detection device, comprising:

[0038] A frame 9, on which a workbench 8 is disposed, and on which a workpiece to be processed is placed;

[0039] A shifting mechanism, wherein the shifting mechanism is arranged on the frame 9, and an output end of the shifting mechanism is drivingly connected to a mounting seat 71, and a cutter head 72 is installed on a side of the mounting seat 71 facing the workbench 8;

[0040] The detection mechanism 1 includes a detection drive, a pressure sensor 17 and a laser sensor 18. The detection mechanism 1 is arranged in pairs. The pressure sensor 17 and the laser sensor 18 are respectively arranged on the output end of the detection drive. The detection drive is used to drive the laser sensor 18 to swing from the initial position to the first detection position, and the detection drive is used to drive the pressure sensor 17 to swing from the initial position to the second detection position, wherein the pressure sensor 17 located at the second detection position abuts against the cutter head 72 shifted to the detection position;

[0041] A controller 5, wherein the controller 5 is electrically connected to the pressure sensor 17 and the laser sensor 18, and the controller 5 is used to analyze the swing angular displacement of the pressure sensor 17 and the laser sensor 18 according to the electrical signals of the pressure sensor 17 and the laser sensor 18, respectively, to obtain a diagnosis result of the cutter head 72;

[0042] The early warning module is used to control the operating status of the machine tool according to the diagnosis results.

[0043] In the above embodiment, the tool head 72 to be detected is shifted from the processing position to the detection position by the shifting mechanism, that is, the end to be detected of the tool head 72 is located between the paired detection mechanisms 1, and driven by the detection drive member, the paired pressure sensor 17 and the laser sensor 18 are swung toward each other, and the laser sensor 18 is first swung from the initial position to the first detection position to detect the broken head defect of the tool head 72, and then, when the tool head 72 is not broken, it continues to swing to the second detection position with the help of the pressure sensor 17. At this time, by analyzing the swing angular displacement values ​​of the paired pressure sensors 17, it is obtained whether the tool head 72 has a skew defect, and then the early warning module is further used to control the operating state of the frame 9 according to the diagnosis result of the tool head 72, so as to remind the operator to replace the tool head 72, avoid the tool head 72 from being processed in a skewed state, thereby reducing the risk of the tool head 72 colliding with the machine or even breaking due to the tool tip deviating from the established trajectory during the next processing.

[0044] It should be noted that the laser sensors 18 arranged in pairs can compare and check each other after detecting the data information. Once one of them fails to detect due to factors such as aging of electronic components or abnormal feedback signals, the other one can provide auxiliary detection to improve the detection accuracy of the entire detection equipment.

[0045] For example, see Figure 1 , Figure 2 and Figure 3 The shifting mechanism includes a shifting assembly 2, a shifting seat 3 and a tool head feeding assembly 4, wherein the shifting assembly 2 is arranged on a frame 9, and the output end of the shifting assembly 2 is transmission-connected to the shifting seat 3, and a tool head feeding assembly 4 is arranged on the shifting seat 3, and the output end of the tool head feeding assembly 4 is transmission-connected to the mounting frame 7, and the mounting seat 71 is arranged on the mounting frame 7, wherein the shifting assembly 2 is used to drive the shifting seat 3 to shift linearly in a horizontal direction, and the tool head feeding assembly 4 is used to drive the mounting frame 7 to shift linearly in a vertical direction, thereby controlling the spatial position of the tool head 72 during the shifting of the shifting assembly 2 and the tool head feeding assembly 4.

[0046] For example, see Figure 1 and Figure 3The shift assembly 2 includes a second motor 21, a screw rod 22, a slider 23, a slide seat 24 and a slide rail 25. The second motor 21 is fixedly arranged on the frame 9. The output end of the second motor 21 is fixedly connected with the screw rod 22. The slider 23 is threadedly connected to the screw rod 22. The slider 23 is fixedly arranged on the shift seat 3. The side of the shift seat 3 is fixedly connected with the slide seat 24. The slide seat 24 is slidably connected to the slide rail 25. The slide rail 25 is fixedly arranged on the frame 9, and the frame 9 has a horizontal mounting surface and a vertical mounting surface. The second motor 21 is mounted on the horizontal mounting surface of the frame 9, and the slide rail 25 is fixedly arranged on the vertical mounting surface of the frame 9, so that the shift seat 3 can be smoothly displaced relative to the frame 9.

[0047] For example, see Figure 1 and Figure 3 The shift seat 3 is fixedly provided with an isolation cover 6 on one side facing the vertical mounting surface, and the isolation cover 6 extends along the horizontal displacement direction of the shift seat 3. This prevents metal debris generated by the workpiece processing on the workbench 8 from splashing onto the transmission components on the frame 9, thereby protecting the transmission components on the frame 9.

[0048] It should be noted that the workbench 8 on the frame 9 can also be linearly displaced, for example, Figure 1 As shown, the linear displacement direction of the workbench 8 is perpendicular to the linear displacement direction of the displacement seat 3 , and the linear displacement direction of the workbench 8 is perpendicular to the linear displacement direction of the mounting frame 7 , so as to adjust the processing position of the workpiece fixed and limited on the workbench 8 .

[0049] For example, see Figure 4 and Figure 5 The detection drive member includes a first motor 12, a driving gear 13, a driven gear 14, a main shaft 15 and a swing arm 16. The first motor 12 arranged in pairs is fixedly arranged on one side of the frame 9 through a support plate 11. The output end of the first motor 12 is fixedly connected with the driving gear 13, and the driving gear 13 is meshed with the driven gear 14. The rotating shafts of the driving gear 13 and the driven gear 14 are respectively rotatably connected to the cantilever 111, and the cantilever 111 is fixedly arranged on the support plate 11. The output end of the rotating shaft of the driven gear 14 is fixedly connected with the main shaft 15, and the end of the main shaft 15 away from the driven gear 14 is fixedly connected with the swing arm 16, and the end of the swing arm 16 away from the main shaft 15 is fixedly connected with the swing rod 161. The pressure sensor 17 and the laser sensor 18 are respectively arranged on the swing rod 161, and along the swing radius direction of the swing rod 161, the laser sensor 18 is located on the side of the pressure sensor 17 close to the main shaft 15.

[0050] In the above embodiment, if Figure 8As shown, when the swing rod 161 swings in the direction of the dotted arrow, the swing rod 161 drives the laser sensor 18 to swing synchronously, and the area scanned by the laser sensor 18 is as follows: Figure 8 The area between the straight dotted line and the circular dotted line in the figure, so that when the cutter head 72 does not have a broken tool defect, the laser emitted by the laser sensor 18 will be blocked by the cutter head 72 during the scanning process, so that the controller 5 receives the electrical signal information emitted by the laser sensor 18 that detects the tip of the cutter head 72; if the laser sensor 18 is not blocked by the tip of the cutter head 72 after scanning, the controller 5 receives the electrical signal information emitted by the laser sensor 18 that the tip of the cutter head 72 is not detected.

[0051] Exemplarily, an angular displacement detector is provided on the rotating shaft of the driven gear 14, and the angular displacement detector is used to detect the swing angular displacement of the rocker arm 161. The swing angular displacement of the rocker arm 161 is the swing angular displacement of the pressure sensor 17 and the laser sensor 18, wherein the swing angular displacement of the laser sensor 18 at the first detection position is smaller than the swing angular displacement of the pressure sensor 17 at the second detection position.

[0052] It should be noted that the angular displacement detector is one of an optical encoder, a rotary transformer, a Hall effect sensor, etc. The staff can choose it according to their needs and perform real-time detection of the rotational angular displacement of the rotating shaft of the driven gear 14 through the working principle of the selected angular displacement detector.

[0053] For example, see Figure 4 and Figure 6 The meshing transmission ratio of the driving gear 13 and the driven gear 14 is greater than 1, so that under the drive of the first motor 12, the rotation speed of the driven gear 14 is slow, thereby improving the adjustment accuracy of the swing angle of the rocker arm 161. Exemplarily, the transmission ratio is 2, 3, 5, 6, etc., which is not limited here.

[0054] In one embodiment, the present invention further provides a machine tool broken tool detection method, using the above-mentioned machine tool broken tool detection device, the detection method comprises the following steps:

[0055] S1, shifting the tool head 72 to be inspected from the processing position to the inspection position by means of a shifting mechanism, and the end of the tool head 72 to be inspected is located between the paired inspection mechanisms 1;

[0056] S2, start the first motor 12 arranged in pairs, and through the meshing transmission of the driving gear 13 and the driven gear 14, make the swing rod 161 swing around the rotation axis of the driven gear 14, the swing rod 161 drives the laser sensor 18 to swing from the initial position to the first detection position, and the swing rod 161 drives the pressure sensor 17 to swing from the initial position to the second detection position, wherein the pressure sensor 17 located at the second detection position abuts against the cutter head 72 shifted to the detection position;

[0057] S3, obtaining electrical signal information of the pressure sensor 17 and the laser sensor 18 through the controller 5, and correspondingly analyzing the swing angular displacement of the pressure sensor 17 and the laser sensor 18 to obtain the diagnosis result of the cutter head 72;

[0058] S4. Control the operating status of the machine tool according to the diagnosis results through the early warning module.

[0059] Exemplarily, in step S3, when the swing rod 161 drives the laser sensor 18 to swing to the first detection position, the controller 5 does not receive the electrical signal information of the laser sensor 18 detecting the tip of the cutter head 72, the controller 5 controls the first motor 12 to stop driving, and outputs the diagnosis result of the cutter head 72 being broken, then the early warning module controls the machine tool to stop running according to the diagnosis result, and under the transmission of the shifting mechanism, the cutter head 72 is shifted from the detection position to the tool changing position;

[0060] When the pendulum rod 161 drives the laser sensor 18 to swing to the first detection position, when the controller 5 receives the electrical signal information sent by the laser sensor 18 that the tip of the tool head 72 is detected, the controller 5 controls the first motor 12 to continue driving, so that the pendulum rod 161 drives the pressure sensor 17 to swing to the second detection position. If the swing angular displacement values ​​of the pendulum rods 161 arranged in pairs are not equal; or, the swing angular displacement values ​​of the pendulum rods 161 arranged in pairs are equal and not equal to the preset value, the controller 5 outputs the diagnosis result that the tool head 72 is skewed, and then the early warning module controls the machine tool to stop running according to the diagnosis result, and under the transmission of the shifting mechanism, the tool head 72 shifts from the detection position to the tool changing position.

[0061] In the above embodiment, if Figure 6 and Figure 7As shown, the illustrated cutter head 72 is not skewed. At this time, the swing angle displacement value α1 of the paired swing rod 161 is equal to α2, and at this time, the swing angle displacement of the swing rod 161 is the preset value. Then, the controller 5 obtains the diagnosis result of the cutter head 72 as no defect according to the swing angle displacement value of the swing rod 161, and the frame 9 operates normally, and the cutter head 72 can continue to be processed according to the processing programming parameters; however, if the cutter head 72 is skewed, for example, the tip of the cutter head 72 is offset to the upper left, left side, lower left, upper right, right side, or lower right, so that when the pressure sensor 17 on the paired swing rod 161 abuts against the side wall of the cutter head 72, α1 and α2 are not equal;

[0062] Alternatively, when the cutting edge of the cutter head 72 deviates toward the upper or lower side, so that the pressure sensor 17 on the paired rocker arms 161 abuts against the side wall of the cutter head 72, α1=α2 and is not equal to the preset value, and the controller 5 outputs a diagnosis result that the cutter head 72 is skewed. Then, the early warning module controls the machine tool to stop running according to the diagnosis result, and under the transmission of the shifting mechanism, the cutter head 72 is shifted from the detection position to the tool changing position, and a new cutter head 72 that meets the processing requirements is replaced.

[0063] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A machine tool broken tool detection device, characterized in that: include: A frame (9), wherein a workbench (8) is provided on the frame (9), and the workbench (8) is used to place a workpiece to be processed; A shifting mechanism, wherein the shifting mechanism is arranged on the frame (9), the output end of the shifting mechanism is drivingly connected to a mounting seat (71), and a cutter head (72) is mounted on a side of the mounting seat (71) facing the workbench (8); A detection mechanism (1), the detection mechanism (1) comprising a detection drive, a pressure sensor (17) and a laser sensor (18), the detection mechanism (1) being arranged in pairs, the pressure sensor (17) and the laser sensor (18) being arranged at the output end of the detection drive, respectively, the detection drive being used to drive the laser sensor (18) to swing from an initial position to a first detection position, and the detection drive being used to drive the pressure sensor (17) to swing from an initial position to a second detection position, wherein the pressure sensor (17) located at the second detection position abuts against the tool head (72) shifted to the detection position; A controller (5), the controller (5) being electrically signal-connected to the pressure sensor (17) and the laser sensor (18), and the controller (5) being used to analyze the swing angular displacements of the pressure sensor (17) and the laser sensor (18) according to the electrical signals of the pressure sensor (17) and the laser sensor (18), respectively, to obtain a diagnosis result of the cutter head (72); An early warning module is used to control the operating status of the machine tool according to the diagnosis results; The detection drive member comprises a first motor (12), a driving gear (13), a driven gear (14), a main shaft (15) and a swing arm (16); the first motors (12) are arranged in pairs and fixedly arranged on one side of the frame (9) via a support plate (11); the output end of the first motor (12) is fixedly connected to the driving gear (13); the driving gear (13) is meshed with the driven gear (14); the rotating shafts of the driving gear (13) and the driven gear (14) are respectively rotatably connected to the cantilever (111); the cantilever (111) is fixedly arranged on the support plate (11). On the support plate (11), the output end of the rotating shaft of the driven gear (14) is fixedly connected to the main shaft (15), one end of the main shaft (15) away from the driven gear (14) is fixedly connected to the swing arm (16), and one end of the swing arm (16) away from the main shaft (15) is fixedly connected to the swing rod (161), and the pressure sensor (17) and the laser sensor (18) are respectively arranged on the swing rod (161), and along the swing radius direction of the swing rod (161), the laser sensor (18) is located on a side of the pressure sensor (17) close to the main shaft (15).

2. The machine tool broken tool detection device according to claim 1, characterized in that: An angular displacement detector is provided on the rotating shaft of the driven gear (14), and is used to detect the swing angular displacement of the swing rod (161). The swing angular displacement of the swing rod (161) is the swing angular displacement of the pressure sensor (17) and the laser sensor (18), wherein the swing angular displacement of the laser sensor (18) at the first detection position is smaller than the swing angular displacement of the pressure sensor (17) at the second detection position.

3. A machine tool broken tool detection device according to claim 2, characterized in that: The meshing transmission ratio between the driving gear (13) and the driven gear (14) is greater than 1.

4. The machine tool broken tool detection device according to claim 3, characterized in that: The shift mechanism comprises a shift assembly (2), a shift seat (3) and a tool head feeding assembly (4); the shift assembly (2) is arranged on a frame (9); an output end of the shift assembly (2) is transmission-connected to the shift seat (3); a tool head feeding assembly (4) is arranged on the shift seat (3); an output end of the tool head feeding assembly (4) is transmission-connected to a mounting frame (7); the mounting frame (71) is arranged on the mounting frame (7); the shift assembly (2) is used to drive the shift seat (3) to shift linearly in a horizontal direction; and the tool head feeding assembly (4) is used to drive the mounting frame (7) to shift linearly in a vertical direction.

5. The machine tool broken tool detection device according to claim 4, characterized in that: The shift assembly (2) comprises a second motor (21), a screw rod (22), a slider (23), a slide seat (24) and a slide rail (25); the second motor (21) is fixedly arranged on the frame (9); the output end of the second motor (21) is fixedly connected to the screw rod (22); the slider (23) is threadedly connected to the screw rod (22); the slider (23) is fixedly arranged on the shift seat (3); the side of the shift seat (3) is fixedly connected to the slide seat (24); the slide seat (24) is slidably connected to the slide rail (25); and the slide rail (25) is fixedly arranged on the frame (9).

6. The machine tool broken tool detection device according to claim 5, characterized in that: The frame (9) has a horizontal mounting surface and a vertical mounting surface, the second motor (21) is mounted on the horizontal mounting surface of the frame (9), and the slide rail (25) is fixedly arranged on the vertical mounting surface of the frame (9).

7. The machine tool broken tool detection device according to claim 6, characterized in that: An isolation cover (6) is fixedly provided on one side of the displacement seat (3) facing the vertical installation surface, and the isolation cover (6) extends along the horizontal displacement direction of the displacement seat (3).

8. A machine tool broken tool detection method, characterized in that: Using a machine tool broken tool detection device according to any one of claims 1 to 7, the detection method comprises the following steps: S1. The tool head (72) to be inspected is shifted from a processing position to a detection position by means of a shifting mechanism, and the end to be inspected of the tool head (72) is located between the paired detection mechanisms (1); S2, starting the first motor (12) arranged in a pair, and causing the swing rod (161) to swing around the rotation axis of the driven gear (14) through meshing transmission of the driving gear (13) and the driven gear (14), the swing rod (161) driving the laser sensor (18) to swing from the initial position to the first detection position, and the swing rod (161) driving the pressure sensor (17) to swing from the initial position to the second detection position, wherein the pressure sensor (17) located at the second detection position abuts against the cutter head (72) shifted to the detection position; S3, obtaining electrical signal information of the pressure sensor (17) and the laser sensor (18) through the controller (5), and correspondingly analyzing the swing angular displacement of the pressure sensor (17) and the laser sensor (18) to obtain a diagnosis result of the cutter head (72); S4. Control the operating status of the machine tool according to the diagnosis results through the early warning module.

9. A machine tool broken tool detection method according to claim 8, characterized in that: In step S3, when the swing rod (161) drives the laser sensor (18) to swing to the first detection position, and the controller (5) does not receive the electrical signal information sent by the laser sensor (18) that the tip of the tool head (72) is detected, the controller (5) controls the first motor (12) to stop driving and outputs a diagnosis result of a tool breakage of the tool head (72). Then, the early warning module controls the machine tool to stop running according to the diagnosis result, and the tool head (72) is shifted from the detection position to the tool change position under the transmission of the shift mechanism. When the swing rod (161) drives the laser sensor (18) to swing to the first detection position, and the controller (5) receives the electrical signal information sent by the laser sensor (18) indicating that the tip of the tool head (72) is detected, the controller (5) controls the first motor (12) to continue driving, so that the swing rod (161) drives the pressure sensor (17) to swing to the second detection position. If the swing angle displacement values ​​of the swing rods (161) arranged in pairs are not equal; or the swing angle displacement values ​​of the swing rods (161) arranged in pairs are equal and not equal to a preset value, the controller (5) outputs a diagnosis result that the tool head (72) is skewed, and then the early warning module controls the machine tool to stop running according to the diagnosis result, and the tool head (72) is shifted from the detection position to the tool change position under the transmission of the shift mechanism.

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