Engine cylinder block machining broken tool detection device and detection method

Abstract

This invention relates to the field of automotive parts processing technology, specifically to a broken tool detection device and method for engine block machining. It includes a base and a transport module. Multiple detection modules are mounted on the base. Each detection module includes a detection plate, a probe mounting plate, and a displacement detection structure. The detection plate is vertically fixed to the base. Multiple probes corresponding to standard cylinder block machining holes are mounted on the probe mounting plate, which is movably connected to the detection plate along the probe axis. The displacement detection structure is located on the detection plate and is used to detect whether the probe mounting plate undergoes displacement along the probe axis during the detection process. The base includes a positioning module that positions the workpiece to be tested according to a set posture after it has been transported onto the base. The detection device of this application has a simple structure, is extremely convenient to operate, and has a high degree of automation, enabling rapid broken tool detection of machining holes on engine blocks.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, specifically to a tool breakage detection device and method for engine cylinder block machining. Background Technology

[0002] In the automotive industry, the engine, as the heart of a car, holds a particularly important position. The cylinder block, as a crucial component of the engine, requires strict control over its machining quality. In the machining field, when cylinder blocks are processed on the production line, one method involves using a toolbox to machine all the holes on one side of the cylinder block in one step. This method boasts extremely high processing efficiency, reducing tool changes and preparation compared to machining centers that use one tool at a time, resulting in a faster cycle time. However, if a tool breaks during processing, it's difficult to detect the breakage on the first machine, easily leading to batch defects or even secondary tool breaks. The traditional method involves manually inspecting the machined holes at the equipment exit. This involves numerous inspection items, a harsh working environment, high labor intensity, and is time-consuming and labor-intensive. Furthermore, manual inspection is easily affected by the operator's mental state and inspection ability, easily leading to defective products and causing significant production costs.

[0003] To address the problems associated with manual tool breakage detection, a Chinese utility model patent (patent number "201520328184.4") entitled "A Laser Tool Breakage Detection Device and Machining Production Line Equipment" provides an automatic laser tool breakage detection device. This device detects the state of a tool on a machine tool, which processes a workpiece with machined holes. The laser tool breakage detection device includes: a laser sensor, with its emitting and receiving ends fixed to opposite ends of the workpiece so that the laser beam emitted from the emitting end can pass through the machined hole to reach the receiving end; and a controller connected to the laser sensor, used to determine the tool state based on whether the receiving end receives a laser signal. The machining production line equipment includes this laser tool breakage detection device. The laser sensor detects the hole position to determine the tool state; the structure is simple, saves machine tool space, improves the efficiency of tool breakage detection, and solves the problems associated with manual detection. However, this laser broken tool detection device also has some problems. It requires the laser sensor transmitter and receiver to be temporarily installed at both ends of the workpiece. Temporary installation is feasible for a single part, but it is obviously not suitable for the inspection of batches of parts on the production line. Temporarily installing a laser sensor on each part to be tested is time-consuming, labor-intensive, and inefficient, making it unsuitable for widespread use. Moreover, for parts such as engine cylinder blocks with many holes, it is obviously not feasible to install a laser sensor receiver and transmitter at each hole. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and provide a tool breakage detection device and detection method for engine cylinder block machining.

[0005] The technical solution of the present invention is: a tool breakage detection device for engine cylinder block machining, comprising a base, wherein multiple detection modules are arranged on the base; the detection modules include,

[0006] A detection plate, which is fixed vertically to the base;

[0007] A probe mounting plate is provided, on which multiple probes corresponding to the machining holes of a standard cylinder block are mounted. The probe mounting plate is movably connected to the detection plate along the probe axis. The probe is a columnar structure with one end fixed horizontally to the probe mounting plate.

[0008] A displacement detection structure is disposed on a detection plate and is used to detect whether the probe mounting plate and the probe are displaced along the probe axial direction during the detection process.

[0009] The base is equipped with a positioning module that positions the workpiece to be tested after it has been transported onto the base, so that the workpiece is placed in a set posture.

[0010] It also includes a transport module for clamping the workpiece to be tested after it has been positioned and driving it to move along the probe axis toward one side of the probe.

[0011] According to the engine cylinder block machining tool breakage detection device provided in this application, the displacement detection structure includes...

[0012] A trigger base is disposed on the side of the detection plate opposite to the probe.

[0013] A trigger switch, mounted on a trigger base, is used to emit vertical light or infrared rays;

[0014] A light-blocking rod is provided, with one end fixedly connected to the probe mounting plate and the other end movable along the probe axis and passing through the detection plate. The light-blocking rod moves into the optical path of the trigger switch when the probe mounting plate is displaced along the probe axis.

[0015] According to the present application, an engine cylinder block machining tool breakage detection device is provided, wherein a plurality of linear bearings are arranged along the probe axis on the side of the detection plate facing away from the probe mounting plate; a guide post that can move along the probe axis passes through the linear bearing; the guide post is fixedly connected to the probe mounting plate at the end of the detection plate facing the probe mounting plate.

[0016] According to the engine block machining tool breakage detection device provided in this application, the base is provided with four sets of detection modules, which are respectively used to detect the machined holes on the IN surface, EX surface, C surface and TC surface of the cylinder block; the detection modules for detecting the machined holes on the IN surface and EX surface are arranged opposite each other in pairs, and the detection modules for detecting the machined holes on the C surface and TC surface are also arranged opposite each other in pairs.

[0017] According to the engine cylinder block machining tool breakage detection device provided in this application, the positioning module includes...

[0018] Multiple positioning blocks are arranged on the upper surface of the base to support the positioning surface at the bottom of the workpiece to be tested.

[0019] Multiple positioning pins, which are pin-shaped structures installed vertically on the upper surface of the base, are used to pass through the positioning holes of the workpiece to be measured.

[0020] According to the engine cylinder block machining tool breakage detection device provided in this application, the positioning module further includes...

[0021] Multiple air detection blocks are set on the base at positions corresponding to the positioning surface of the workpiece to be tested, and are used to detect whether the workpiece to be tested placed on the base is tilted.

[0022] According to the engine cylinder block machining tool breakage detection device provided in this application, the positioning module further includes...

[0023] Multiple sets of photoelectric switches, each set of photoelectric switches including two photoelectric switches arranged opposite each other on the base, the photoelectric switches in the same set emit rays through the workpiece placement station on the base, used to detect whether there is a collision during the placement and handling of the workpiece placed on the base.

[0024] According to the present application, an engine cylinder block machining tool breakage detection device is provided, wherein the handling module includes a robotic arm suspended above the base for handling the workpiece to be tested.

[0025] According to the engine block machining tool breakage detection device provided in this application, a return spring is provided between the detection plate and the probe mounting plate; the return spring is arranged along the probe axis, with one end fixed on the side of the probe mounting plate facing the detection plate, and the other end fixed on the side of the detection plate facing the probe mounting plate.

[0026] This application also provides a method for detecting broken cutting tools during engine block machining, which is carried out according to the following steps:

[0027] S1. Move the workpiece to be tested onto the base and position the workpiece;

[0028] S2. After confirming that the workpiece to be tested is placed in the set posture, move the workpiece to be tested to one side of the probe.

[0029] S3. During the movement of the workpiece to be tested, the displacement detection structure determines whether the probe detection plate has been displaced. If no displacement occurs, it proves that there is no tool breakage on that surface of the workpiece to be tested; otherwise, tool breakage occurs.

[0030] S4. Repeat the above steps until all surfaces of the workpiece to be tested have been inspected.

[0031] According to the method for detecting broken tools in engine cylinder block machining provided in this application, in step S3, the method for determining whether the probe detection plate has been displaced by the displacement detection structure includes: moving the workpiece to be tested along the axial direction of the probe, inserting the probe on the probe mounting plate into the corresponding machining hole on the surface of the workpiece to be tested, if a broken tool occurs in a certain machining hole, the machining hole will squeeze the probe during the movement of the workpiece to be tested, the probe will drive the probe mounting plate to move axially towards the corresponding detection plate side, and the light blocking rod on the side of the detection plate away from the probe will move away from the probe until it moves into the optical path of the trigger switch on the detection plate, and the movement of the probe mounting plate is determined by observing the optical path of the trigger switch.

[0032] The advantages of this application are as follows: 1. This application arranges multiple detection modules on the base. The detection modules correspond one-to-one with the machining holes on the engine block, i.e., the workpiece to be tested. When a broken tool occurs in the machining hole on the workpiece to be tested, the workpiece to be tested will squeeze the probe during the movement of the workpiece to the probe, causing the probe mounting plate and the probe to move axially. The displacement detection structure can promptly determine that a broken tool has occurred on the surface of the workpiece to be tested. The entire detection process does not require the placement of sensors on the workpiece to be tested, and the detection efficiency is extremely high. The workpiece to be tested can be placed on the base plate for positioning and then moved in parallel. The detection accuracy is extremely high, saving a lot of manpower and material resources, and has great promotional value.

[0033] 2. The displacement detection structure of this application includes a trigger switch and a light-blocking rod. The light-blocking rod moves together with the probe mounting plate. When the light-blocking rod moves to the light path of the trigger switch and blocks the trigger switch, it can be used to determine whether the probe mounting plate has been displaced, thereby quickly determining whether there is a broken tool on the surface of the workpiece to be tested. The whole judgment method is extremely simple and accurate.

[0034] 3. The probe mounting plate of this application is connected to the detection plate through guide posts and linear bearings. Through the structure of guide posts and linear bearings, the probe mounting plate can be movably connected to the detection plate along the probe axis, ensuring that the probe mounting plate can only move along the axis, and ensuring that the displacement detection structure can accurately obtain the axial movement of the probe mounting plate during the movement of the workpiece to be tested.

[0035] 4. This application has four sets of detection modules installed on the base, which can detect the machining holes on the four sides of the workpiece to be tested. The efficiency of the entire detection is extremely high, no manual supervision is required, the operation is very simple, and the detection accuracy is extremely high.

[0036] 5. After the workpiece to be tested is placed on the base, the workpiece is positioned. The cooperation between the positioning block and the positioning pin can stably support the workpiece on the base, and also restrict the workpiece to be tested to be positioned on the base in a set posture, which facilitates the subsequent testing process and avoids the occurrence of collision with the probe.

[0037] 6. This application installs an air detection block on the base. The air detection block determines whether the workpiece to be tested placed on the base is tilted by expelling air outward. If the workpiece to be tested is tilted, the pressure of the air detection block changes, which can determine that the part of the workpiece to be tested corresponding to the air detection block is tilted, and the workpiece to be tested needs to be adjusted. The air detection block can automatically determine whether the posture of the workpiece to be tested is tilted, and the degree of automation is extremely high.

[0038] 7. This application can quickly determine whether the workpiece to be tested has been placed down by setting up a through-beam switch, that is, whether there is a workpiece to be tested on the base. The through-beam switch in the same group emits a beam. If another through-beam switch in the same group can receive the beam, it proves that there is no workpiece to be tested on the base placement station. Otherwise, it proves that there is a workpiece to be tested on the base placement station. The through-beam switch can improve the automation level of the entire detection device, automatically determine whether the workpiece to be tested has entered, and the operation is simple.

[0039] 8. This application uses a robotic arm to move and transport the workpiece to be tested. Using a robotic arm for transport is simple to operate, highly automated, and has extremely high precision in transport control, which greatly improves the overall testing efficiency.

[0040] 9. The detection method of this application is extremely simple and can quickly detect whether there is a broken tool in the machining hole of the engine cylinder block. It does not require manual operation or the placement of sensor structures on the workpiece to be tested. It has extremely high detection efficiency and accuracy and has great potential for promotion.

[0041] 10. This application uses a displacement detection structure to detect whether the probe mounting plate has shifted, and uses the displacement of the probe mounting plate to determine whether the machining hole of the workpiece under test has broken. The detection process is very simple, highly automated, and extremely accurate.

[0042] The detection device of this application has a simple structure, is extremely convenient to operate and use, and has a high degree of automation. It can quickly detect broken tools in the machined holes on the engine block, saving a lot of manpower and material resources, and has great promotional value. Attached Figure Description

[0043] Figure 1 : Axial view of the testing device in this application (without engine block placement);

[0044] Figure 2 : Axial view of the testing device in this application (with engine block placed);

[0045] Figure 3 : Schematic diagram of the arrangement of the detection plate and probe mounting plate in this application (top view);

[0046] Figure 4 This application includes a schematic diagram of a robotic arm grasping a broken blade in an engine block.

[0047] Figure 5 This application includes a schematic diagram of the bottom surface of the engine block.

[0048] Wherein: 1—base; 2—detection plate; 3—probe mounting plate; 4—probe; 5—trigger base; 6—trigger switch; 7—light blocking rod; 8—linear bearing; 9—guide column; 10—positioning block; 11—positioning pin; 12—air detection block; 13—through-beam switch; 14—robot arm. Detailed Implementation

[0049] Embodiments of the present invention are described in detail below, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0050] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0052] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0053] This application relates to a tool breakage detection device and method for engine cylinder block machining. This application is used to detect the machined holes on the four sides of the engine cylinder block to determine whether there is a tool breakage problem in the machined holes on the four sides of the engine cylinder block. This application can quickly obtain the tool breakage status of the machined holes on the sides of the engine cylinder block, i.e. the workpiece to be tested. The entire detection process does not require manual operation and can be fully automated, with extremely high detection accuracy.

[0054] Specifically, the testing device of this application includes a base 1, which is the supporting foundation of the entire testing device. The base 1 includes four legs, which are placed at the four corners of the base 1. The four legs are provided with structures to increase the contact area between the legs and the ground, in order to improve the stability of the entire base 1.

[0055] The base 1 is equipped with multiple sets of detection modules, each set corresponding to one side of the workpiece to be tested. Each set of detection modules can only perform tool breakage detection on one side of the workpiece. In practical applications, this application sets four sets of detection modules on the base 1, such as... Figures 1-4 As shown, the detection modules are used to detect the machined holes on the IN, EX, C, and TC surfaces of the cylinder block, respectively. The detection modules for the IN and EX surfaces are arranged in pairs facing each other, as are the detection modules for the C and TC surfaces. In practical applications, it is not necessarily limited to four sets of detection modules; multiple sets can be used, as long as the actual usage requirements are met.

[0056] like Figures 1-3 As shown, the detection module of this application includes a detection plate 2, a probe mounting plate 3, and a displacement detection structure. The detection plate 1 is a vertical plate fixed to the base 1. The probe mounting plate 3 is also a vertically arranged vertical plate structure. The probe mounting plate 3 and the detection plate 1 are arranged parallel to each other, with the probe mounting plate 3 located on the side of the detection plate 2 facing the center line of the base 1. Multiple probes 4 corresponding to the machining holes of the standard cylinder block are mounted on the probe mounting plate 3. Each probe 4 is a columnar structure with one end fixed horizontally to the probe mounting plate 3. The probe 4 extends horizontally towards the center line of the base 1 and is perpendicular to the probe mounting plate 3. The number of probes 4 on the probe mounting plate 3 corresponds to the number of machining holes on the side of the standard engine cylinder block (referring to the side corresponding to this detection module). The diameter of each probe 4 is one-third the diameter of the corresponding machining hole to be detected, and the length of each probe 4 is determined according to the depth of the corresponding machining hole. The probe mounting plate 3 is movably connected to the detection plate 2 along the probe axis.

[0057] The displacement detection structure is mounted on the detection plate 2 to detect whether the probe mounting plate 3 and the probe 4 are displaced along the axial direction of the probe 4 during the detection process. If the machined holes on the detection surface of the workpiece are intact and there is no broken tool, the probe 4 will insert into the corresponding machined hole when the workpiece moves towards the probe 4, and the probe mounting plate 3 will not be displaced along the axial direction of the probe 4. If the machined hole on the test surface is broken, the machined hole will exert a squeezing effect on the probe 4 after the probe 4 is inserted into the corresponding machined hole, thereby driving the probe mounting plate 3 to move axially. After the displacement detection structure detects this movement, it can determine that a broken tool has occurred in the machined hole of the test surface.

[0058] In addition, the base 1 is provided with a positioning module that positions the workpiece to be tested after it is transported to the base 1 so that the workpiece to be tested is placed in a set posture. It also includes a transport module for clamping the workpiece to be tested and driving the workpiece to be tested to move along the axial direction of the probe 4 to one side of the probe 4 after the workpiece to be tested is positioned.

[0059] In actual testing, follow these steps:

[0060] S1. The transport module transports the workpiece to be tested onto the base 1, and the positioning module positions the workpiece to be tested to ensure that the workpiece to be tested is placed on the base 1 in the set posture.

[0061] S2. After confirming that the workpiece to be tested is placed in the set posture, the transport module transports the workpiece to be tested to one side of the probe 4. When the workpiece to be tested moves to the probe 4 side in the set posture, the probe 4 on the probe mounting plate 3 corresponds one-to-one with the machining hole on the side of the workpiece to be tested, and the probe 4 will be inserted into the corresponding machining hole.

[0062] S3. During the movement of the workpiece to be tested, the displacement detection structure determines whether the probe detection plate 3 has been displaced. If no displacement occurs, it proves that there is no tool breakage on the surface of the workpiece to be tested; otherwise, tool breakage occurs.

[0063] If there is no broken tool in the machining hole on the side of the workpiece to be tested, then after the probe 4 is inserted into the corresponding machining hole, there is no connection between the probe 4 and the corresponding machining hole, and the machining hole will not exert a squeezing force on the probe 4. However, if there is a broken tool in the machining hole on the side, then the machining hole with the broken tool will exert an axial squeezing force on the corresponding probe 4 during the translation of the workpiece to be tested. The probe 4 will in turn push the probe mounting plate 3 to move axially toward the detection plate 2. The displacement detection structure can detect the displacement of the probe mounting plate 3, thereby determining that there is a broken tool on the side.

[0064] S4. Repeat the above steps until all surfaces of the workpiece to be tested have been inspected.

[0065] In some embodiments of this application, the displacement detection structure described above has been optimized, specifically, as follows: Figure 3 As shown, the displacement detection structure includes a trigger base 5, a trigger switch 6, and a light-blocking rod 7. The trigger base 5 is located on the side of the detection plate 2 facing away from the probe 4, and the trigger base 5 is fixedly connected to the detection plate 2. The trigger switch 6 is mounted on the trigger base 5 and is used to emit vertical light or infrared rays. In practical applications, the light or infrared rays emitted by the trigger switch 6 do not need to be vertical; as long as they are emitted in a straight line and can be blocked by the light-blocking rod 7, the requirements are met. One end of the light-blocking rod 7 is fixedly connected to the probe mounting plate 3, and the other end is movable along the axial direction of the probe 4 and passes through the detection plate 2. When the probe mounting plate 3 undergoes axial displacement along the probe 4, the light-blocking rod 7 moves into the optical path of the trigger switch 6.

[0066] During testing, if a broken tool is found in a machined hole on one side of the workpiece, the workpiece moves towards the corresponding probe 4 under the movement of the transport module. When the probe 4 is inserted into the corresponding machined hole, the broken tool in the machined hole will squeeze the probe 4. The probe 4 squeezes the probe mounting plate 3 along the axial direction towards the detection plate 2. The probe mounting plate 3 moves towards the detection plate 2, and the light blocking rod 7 moves away from the probe mounting plate 3. When it moves to the light path of the trigger switch 6, the light path of the trigger switch 6 is blocked, triggering an alarm and indicating that a broken tool problem has occurred on that side of the workpiece.

[0067] In a preferred embodiment of this application, the connection structure between the probe mounting plate 3 and the detection plate 2 described above has been optimized, such as... Figure 3 As shown, a plurality of linear bearings 8 are arranged along the axial direction of the probe 4 on the side of the detection plate 2 facing away from the probe mounting plate 3. A guide post 9 that can move along the axial direction of the probe 4 passes through the linear bearing 8. The guide post 9 is located at the end of the detection plate 2 facing the probe mounting plate 3 and is fixedly connected to the probe mounting plate 3.

[0068] The combined structure of the linear bearing 8 and the guide post 9 ensures that the probe mounting plate 3 can only move along the axial direction of the probe 4. This guarantees that when a workpiece breaks, the squeezing force generated by the broken tool's machining hole on the probe 4 can only drive the probe mounting plate 3 to move axially, thus being detected by the light-blocking rod 7 and the trigger switch 6. The combined structure of the linear bearing 8 and the guide post 9 improves the accuracy of detection and reduces the possibility of false triggering.

[0069] In this embodiment, a return spring 15 is provided between the detection plate 2 and the probe mounting plate 3. The return spring 15 is arranged along the axial direction of the probe 4, with one end fixed to the side of the probe mounting plate 3 facing the detection plate 2, and the other end fixed to the side of the detection plate 2 facing the probe mounting plate 3. After the detection is completed, the return spring 15 can drive the probe mounting plate 3 to return to its initial position, facilitating the next detection.

[0070] In other embodiments of this application, the positioning module described above is optimized, specifically, as follows: Figure 1 As shown, the positioning module includes multiple positioning blocks 10 and multiple positioning pins 11. The multiple positioning blocks 10 are arranged on the upper surface of the base 1. The upper surface of the positioning block 10 is a plane, which is aligned with the positioning surface of the workpiece to be measured (e.g., ...). Figure 5 Part C shown is the flat end face of the bottom of the workpiece to be tested. This contact is equivalent to the upper end of the positioning block 10 supporting the positioning surface of the workpiece to be tested. The positioning block 10 is used to restrict the movement of the workpiece to be tested along the Z-axis (Z-axis refers to the vertical direction of the car after the workpiece is installed on it) and its rotation around the X-axis (X-axis refers to the front-rear direction of the car after the workpiece is installed on it) and Y-axis (Y-axis refers to the left-right direction of the car after the workpiece is installed on it). The positioning pin 11 is a pin-shaped structure vertically mounted on the upper surface of the base 1. In this embodiment, two positioning pins are provided: a cylindrical pin and a rhomboid pin. The cylindrical pin corresponds to the first positioning hole (e.g., ...). Figure 5 As shown in the diagram, the A positioning hole corresponds to the second positioning hole (e.g., the diamond-shaped pin). Figure 5 As shown in the B positioning hole, after the positioning pin 11 is inserted into the corresponding positioning hole, it can restrict the movement of the workpiece under test along the X and Y directions, as well as the rotation around the Z axis.

[0071] After the transport module transports the workpiece to be tested onto the base 1, it aligns the positioning hole on the bottom surface of the workpiece to be tested with the positioning pin 11 on the base 1, so that the positioning surface on the workpiece to be tested is aligned with the positioning block 10. After the positioning pin 11 is inserted into the corresponding positioning hole and the positioning surface falls on the positioning block 10, the limiting of the workpiece to be tested is completed.

[0072] In a further embodiment of this application, the positioning module has been further optimized, specifically, as follows: Figure 1 As shown, the positioning module in this embodiment also includes multiple air detection blocks 12, which are disposed on the base 1 at positions corresponding to the positioning surface of the workpiece to be tested, and are used to detect whether the workpiece to be tested placed on the base 1 is tilted.

[0073] The air detection block 12 ejects air to determine if the workpiece under test on the base 1 is tilted. When the workpiece is in a standard position, it is pressed against the air detection block 12, effectively sealing it and preventing further air ejection. By monitoring the pressure change of the air detection block 12, it can be determined whether the workpiece is properly positioned. If the workpiece is tilted, the pressure of one of the air detection blocks 12 will change (if the air detection block 12 is not completely sealed, it can continue to eject air, and the pressure change reported to the pressure detection device will be smaller than if it were completely sealed). For example, if there is no workpiece above it, the pressure of the air detection block 12 will remain unchanged, indicating that the area above is empty and the workpiece is not properly installed. In this case, it can be determined that the workpiece is tilted. By monitoring the position and pressure of the air detection block 12, the direction of the tilt can be determined, allowing for alignment and adjustment.

[0074] In other embodiments of this application, the positioning module described above has been further optimized, specifically, as follows: Figure 1 As shown, the positioning module also includes multiple sets of through-beam switches 13. Each set of through-beam switches 13 includes two through-beam switches 13 arranged opposite each other on the base 1. In this embodiment, two sets of through-beam switches 13 are provided on the base 1, and the through-beam switches 13 are arranged at the corners of the base 1, with the diagonally opposite through-beam switches 13 forming a set. The through-beam switches 13 in the same set emit rays that pass through the workpiece placement station on the base 1 to detect whether the workpiece to be tested is placed at the placement station on the base 1.

[0075] During testing, after the transport module moves the workpiece to be tested onto the base 1, the workpiece is placed at the placement station of the base 1. The workpiece is in the middle position of the through-beam switch 13, which will block the beam emitted by the through-beam switch 13. The through-beam switch 13 in the same group cannot receive the emitted beam. At this time, it can be determined that there is a workpiece to be tested placed at the current placement station of the base 1. If the through-beam switch 13 receives the beam emitted by the through-beam switch 13 in the same group, it proves that there is no workpiece to be tested placed on the base 1 at this time.

[0076] In some embodiments of this application, the above-described transport module has been optimized, specifically, as follows: Figure 4 As shown, the handling module in this embodiment includes a robotic arm 14 suspended above the base 1 for handling the workpiece to be tested. The robotic arm 14 has high handling accuracy for the workpiece to be tested and can automate the entire testing process.

[0077] Specifically, the specific testing process of this application is as follows: the robot arm 14 transports the workpiece to be tested to the placement station of the base 1, aligns the positioning face of the bottom surface of the workpiece to be tested with the positioning block 10 on the placement station, aligns the positioning hole of the bottom surface of the workpiece to be tested with the positioning pin 11, after placement, the beam emitted by the through-beam switch 13 is blocked, the control module receives that the workpiece to be tested is placed on the placement station, the air detector 12 detects the workpiece to be tested, if the pressure change of the air detector 12 meets the set requirements, it proves that the posture of the workpiece to be tested is in the set state.

[0078] After the posture is confirmed, the robot arm 14 holds the workpiece to be tested and lifts it vertically to disengage the space to be tested from the positioning pin 11 and positioning block 10 (the vertical lift is 20mm or other heights, as long as it can just disengage from the positioning pin 11 and positioning block 10 below). Then it moves horizontally to the probe 4 on one side and the probe 4 is inserted into the corresponding machining hole. If the machining hole has a broken tool, the broken tool machining hole squeezes the probe 4. The light blocking rod 7 on the probe mounting plate 3 moves axially away from the probe mounting plate 3. When the light blocking rod 7 blocks the light path of the trigger switch 6, the trigger switch 6 sends a signal to the control module that the workpiece to be tested has a broken tool on that side. Otherwise, it sends a signal that the reverse side does not have a broken tool.

[0079] After the side inspection is completed, the robot arm 14 moves the workpiece to be tested back to the placement station for posture positioning adjustment, and then performs the inspection of other sides according to the above process until the broken tool detection is completed for all the machined holes on all sides of the workpiece.

[0080] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A tool breakage detection device for engine cylinder block machining, comprising a base (1), characterized in that: The base (1) is provided with multiple sets of detection modules; the detection modules include, The detection plate (2) is fixed vertically on the base (1); A probe mounting plate (3) is provided, on which a plurality of probes (4) corresponding to the machining holes of the standard cylinder block are mounted. The probe mounting plate (3) is movably connected to the detection plate (2) along the probe axis. The probe (4) is a columnar structure with one end fixed horizontally on the probe mounting plate (3). A return spring is provided between the detection plate (2) and the probe mounting plate (3). The return spring is arranged along the probe (4) axis, with one end fixed on the side of the probe mounting plate (3) facing the detection plate (2) and the other end fixed on the side of the detection plate (2) facing the probe mounting plate (3). The displacement detection structure is set on the detection plate (2) and is used to detect whether the probe mounting plate (3) and the probe (4) are displaced along the axial direction of the probe (4) during the detection process; The base (1) is provided with a positioning module that positions the workpiece to be tested after it is transported to the base (1) so that the workpiece to be tested is placed in a set posture. It also includes a transport module for clamping the workpiece to be tested after it has been positioned and driving the workpiece to be tested to move along the axial direction of the probe (4) to one side of the probe (4).

2. The engine cylinder block machining tool breakage detection device as described in claim 1, characterized in that: The displacement detection structure includes, Trigger base (5), the trigger base (5) is disposed on the side of the detection plate (2) facing away from the probe (4); Trigger switch (6), which is mounted on trigger base (5) and is used to emit vertical light or infrared light; The light-blocking rod (7) is fixedly connected to the probe mounting plate (3) at one end and can be moved along the probe (4) axial direction and passed through the detection plate (2). When the probe mounting plate (3) is displaced along the probe (4) axial direction, the light-blocking rod (7) moves to the optical path of the trigger switch (6).

3. The engine cylinder block machining tool breakage detection device as described in claim 2, characterized in that: The detection plate (2) is provided with a plurality of linear bearings (8) arranged along the axial direction of the probe (4) on the side facing away from the probe mounting plate (3); a guide post (9) that can move along the axial direction of the probe (4) is provided inside the linear bearing (8); the guide post (9) is fixedly connected to the probe mounting plate (3) at the end of the detection plate (2) facing the probe mounting plate (3).

4. The engine cylinder block machining tool breakage detection device as described in claim 1, characterized in that: The base (1) is provided with four sets of detection modules, which are used to detect the machined holes on the IN surface, EX surface, C surface and TC surface of the cylinder block respectively; the detection modules for detecting the machined holes on the IN surface and EX surface are arranged opposite each other in pairs, and the detection modules for detecting the machined holes on the C surface and TC surface are arranged opposite each other in pairs.

5. The engine cylinder block machining tool breakage detection device as described in claim 1, characterized in that: The positioning module includes, Multiple positioning blocks (10) are arranged on the upper surface of the base (1) for supporting the positioning surface at the bottom of the workpiece to be tested; Multiple positioning pins (11) are pin-shaped structures installed vertically on the upper surface of the base (1) for passing through the positioning holes of the workpiece to be measured.

6. The engine cylinder block machining tool breakage detection device as described in claim 1, characterized in that: The positioning module also includes, Multiple air detection blocks (12) are set on the base (1) at positions corresponding to the positioning surface of the workpiece to be tested, and are used to detect whether the workpiece to be tested placed on the base (1) is tilted.

7. The engine cylinder block machining tool breakage detection device as described in claim 1, characterized in that: The positioning module also includes, Multiple sets of photoelectric switches (13), each set of photoelectric switches (13) includes two photoelectric switches (13) arranged opposite each other on the base (1). The photoelectric switches (13) in the same set emit rays through the workpiece placement station on the base (1) to detect whether there is a workpiece to be tested on the base (1).

8. The engine cylinder block machining tool breakage detection device as described in claim 1, characterized in that: The transport module includes a robotic arm (14) suspended above the base (1) for transporting the workpiece to be tested.

9. A detection method for a broken tool detection device for engine cylinder block machining as described in any one of claims 1 to 8, characterized in that: Follow these steps: S1. Move the workpiece to be tested onto the base (1) and position the workpiece to be tested; S2. After confirming that the workpiece to be tested is placed in the set posture, move the workpiece to be tested to one side of the probe (4); S3. During the movement of the workpiece to be tested, the displacement detection structure determines whether the probe mounting plate (3) has been displaced. If no displacement occurs, it proves that the workpiece to be tested has not experienced a broken tool on that surface; otherwise, a broken tool will occur. S4. Repeat the above steps until all surfaces of the workpiece to be tested have been inspected.

10. The detection method of the engine cylinder block machining tool breakage detection device as described in claim 9, characterized in that: In step S3, the method for determining whether the probe mounting plate has moved by the displacement detection structure includes: moving the workpiece to be tested along the axial direction of the probe (4), inserting the probe (4) on the probe mounting plate (3) into the corresponding machining hole on the surface of the workpiece to be tested, if a tool breaks in a certain machining hole, the machining hole will squeeze the probe (4) during the movement of the workpiece to be tested, the probe (4) will drive the probe mounting plate (3) to move along the axial direction to the side of the corresponding detection plate (2), and the light blocking rod (7) on the side of the detection plate (2) away from the probe (4) will move away from the probe (4) until it moves to the optical path of the trigger switch (6) on the detection plate (2), and determining whether the probe mounting plate (3) has moved by observing the optical path of the trigger switch (6).

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