A size measuring device

Abstract

This invention discloses a dimensional measuring device, belonging to the technical field of dimensional inspection in magnet processing. It includes a frame, with a feeding conveyor, a detection mechanism, a discharging conveyor, and a blowing mechanism mounted on top of the frame. The detection mechanism includes a support platform, with two workpiece guide blocks slidably connected above the support platform. Sliding mechanisms are provided on both sides of the support platform to drive the two workpiece guide blocks to slide in opposite directions. A width measuring sensor, penetrating a sliding hole in one of the workpiece guide blocks, is located above the sliding mechanisms and is used to detect the width of the workpiece. A support is provided at the end of the support platform to support a thickness measuring sensor, which is used to detect the thickness of the workpiece. This invention can automatically detect the width and thickness of workpieces, solving the problems of poor accuracy and low efficiency of manual inspection. It achieves comprehensive inspection, eliminating missed or incorrect detections, and greatly improving both inspection accuracy and efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of magnet machining dimension inspection, and more particularly to a dimension measuring device. Background Technology

[0002] Neodymium iron boron permanent magnet materials have rapidly entered the industrial society due to their excellent magnetic properties, cost-effectiveness and abundant resource reserves. During the processing of neodymium iron boron magnets, the processing dimensions need to be measured manually. This serves two purposes: first, it can check whether the processing accuracy of the workpiece meets the requirements; second, it can determine the wear of the grinding tool through the feedback of the processing and grinding dimensions, so as to adjust the tool accordingly.

[0003] Because of the high processing speed of grinding machine production lines, inspection can only be carried out manually at regular intervals using calipers. This inspection method is very inefficient and inaccurate, and cannot achieve full inspection. There are cases of incorrect inspection and missed inspection. At the end of the production line, workpieces with out-of-tolerance dimensions are mixed with workpieces with acceptable dimensions. Manually removing them is labor-intensive, time-consuming, and difficult. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a size measuring device.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0006] A size measuring device includes a frame, and a feeding conveying mechanism, a detection mechanism, a discharging conveying mechanism, and a blowing mechanism are arranged above the frame, wherein:

[0007] The feeding and conveying mechanism is used for conveying workpieces after grinding.

[0008] The detection mechanism is located between the loading conveyor and the unloading conveyor, and is used to detect the thickness and width of the workpiece conveyed from the loading conveyor.

[0009] The feeding and conveying mechanism is used to transport workpieces from the inspection mechanism;

[0010] The blowing mechanism is located at the end of one side of the unloading conveyor mechanism and is used to blow unqualified workpieces off the unloading conveyor mechanism.

[0011] The detection mechanism includes a support platform, which is connected to the end of the feeding and conveying mechanism. Two workpiece guide blocks are slidably connected above the support platform. The workpiece guide blocks are arranged along the conveying direction of the workpieces. Sliding mechanisms are provided on both sides of the support platform to drive the two workpiece guide blocks to slide in opposite directions. A width measuring sensor is provided on the sliding mechanism, which passes through a sliding hole in the workpiece guide block. The width measuring sensor extends and retracts within the sliding hole to detect the width of the workpiece.

[0012] The end of the support platform is provided with a support for supporting the thickness measuring sensor, which is vertically set and used to detect the thickness of the workpiece.

[0013] Furthermore, the upper surface of the support platform is provided with a second sliding hole, and the probe of the width distance sensor is located inside the second sliding hole, so that the probe of the width distance sensor is sunk below the plane of the support platform.

[0014] Furthermore, each of the workpiece guide blocks has a notch on its inner end that corresponds to the probe of the thickness distance sensor.

[0015] Furthermore, the sliding mechanism includes a linear module of forward and reverse lead screws located below the support platform and a slide table located above the linear module of forward and reverse lead screws. The two slide tables move towards each other or away from each other with the linear module of forward and reverse lead screws. A telescopic cylinder is provided above the slide table and connected to the outside of the workpiece guide block. The workpiece guide block is driven to slide by the telescopic cylinder.

[0016] Furthermore, at least two sets of the telescopic cylinders are provided.

[0017] Furthermore, the slide is provided with a guide member to guide the sliding of the workpiece guide block.

[0018] Furthermore, the inner side of the front section of both workpiece guide blocks is provided with an inclined surface, so that the width of the front section of the two workpiece guide blocks is greater than the width of the middle section.

[0019] Furthermore, a feeding mechanism is provided above the frame on one side of the feeding conveyor mechanism. The feeding mechanism includes a fixed frame, on which a servo motor is mounted. The position of the servo motor is adjustable up and down. The output shaft of the servo motor is coaxially connected to a feeding roller. The feeding roller is located above the feeding conveyor mechanism and is used to press the workpiece and provide friction force to the workpiece to move in the conveying direction.

[0020] Furthermore, the servo motor is connected to the linear module, which is driven by a lead screw, which is a trapezoidal lead screw.

[0021] Furthermore, the blowing mechanism includes a detection switch for detecting the workpiece, a nozzle, and a solenoid valve. The nozzle is connected to the exhaust port of the solenoid valve. The detection mechanism is signal-connected to a control system. The control system is used to receive the width and thickness of the workpiece detected by the detection mechanism and determine whether they exceed the threshold. The detection switch is signal-connected to the control system and receives a workpiece non-conforming signal sent by the control system. When the detection switch receives a workpiece non-conforming signal, the air inlet of the solenoid valve is connected to the air source, and the nozzle sprays compressed air to blow the workpiece off the unloading conveyor mechanism.

[0022] In summary, compared with the prior art, the beneficial effects of the above technical solution are:

[0023] (1) The workpiece is transported to the support platform by the feeding conveyor. When the workpiece is transported to the support platform, the sliding mechanism drives the slide table to move, thereby changing the distance between the two workpiece guide blocks. The thrust of the telescopic cylinder causes the two workpiece guide blocks to clamp the workpiece, preventing the workpiece from moving during the detection process. After the workpiece is clamped, the two width distance sensors abut against the workpiece, which can detect the width dimension of a single point of the workpiece. The thickness distance sensor descends, pressing the workpiece down so that the workpiece is in close contact with the support platform, so as to detect the thickness of the workpiece. As the workpiece continues to be pushed forward, the workpiece width direction can be continuously measured. The multi-point measurement improves the accuracy and efficiency of the inspection. After the workpiece size is inspected, the workpiece is pushed onto the unloading conveyor mechanism. The detection switch in the blowing device detects the incoming material. When a defective workpiece is detected, the air inlet of the high-frequency solenoid valve is connected to the air source. Air is blown through the nozzle to blow the defective workpiece off the unloading conveyor mechanism. The qualified workpiece is then conveyed to the next station. This device realizes the function of measuring and inspecting the width and thickness of the workpiece, and there will be no missed or incorrect inspections. It saves manpower, and the blowing mechanism avoids confusion between qualified and unqualified workpieces, thus improving efficiency.

[0024] (2) The front sections of the two workpiece guide blocks are flared, which can improve the convenience of transporting the workpiece from the feeding conveyor to the support platform and guide the workpiece into the space between the two workpiece guide blocks.

[0025] (3) This device can be further combined with a grinding machine to determine the tool wear of the grinding machine by measuring the size of NdFeB products. Specifically, during the measurement process, the workpiece size data is continuously collected and recorded to form a measurement result. The measurement result is represented by a line graph or dot matrix graph, which makes it easier for the operator to view. The measurement feedback shows the thickness or width change trend of the workpiece (NdFeB). The tool wears continuously during the processing. The change trend shown by the product size is that the thickness or width gradually increases. The change trend can indirectly reflect the tool wear of the grinding machine. If there are products that are out of tolerance during the measurement process, it proves that the tool wear is serious and the tool wear is out of range. The corresponding tool wear is the out-of-tolerance size of the workpiece. This invention links the measuring device with the grinding machine. Through the feedback of out-of-tolerance data, the tool can be automatically adjusted. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0027] Figure 2This is a schematic diagram of the feeding and conveying mechanism according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the feeding mechanism in an embodiment of the present invention. Figure 1 ;

[0029] Figure 4 This is a schematic diagram of the feeding mechanism in an embodiment of the present invention. Figure 2 ;

[0030] Figure 5 This is a schematic diagram of the feeding mechanism in an embodiment of the present invention. Figure 3 ;

[0031] Figure 6 This is a schematic diagram of the detection mechanism according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of an irregular workpiece in an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Feeding mechanism; 3. Feeding mechanism; 4. Detection mechanism; 5. Discharge conveyor belt; 6. Blowing mechanism; 7. Collection box; 8. Support platform; 9. Slide table; 10. Positive and negative lead screw linear module; 11. Telescopic cylinder; 12. Guide component; 13. Width distance sensor; 14. Bearing seat; 15. Workpiece guide block; 16. Support; 17. Thickness distance sensor; 18. Feeding roller; 19. Fixed frame; 20. Lead screw; 21. Servo motor; 22. Hand crank; 23. Locking handle; 24. Feeding conveyor belt; 25. Support frame; 26. Guide plate; 27. Slide hole two; 28. Notch; 29. ​​Slide hole one. Detailed Implementation

[0034] The principles and features of the present invention are described below with reference to all the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0035] This invention discloses a size measuring device.

[0036] like Figure 1 As shown, a size measuring device includes a frame 1, on which a loading conveyor mechanism 2, a feeding mechanism 3, a detection mechanism 4, a unloading conveyor mechanism, and a blowing mechanism 6 are mounted. Wherein:

[0037] like Figure 2As shown, the feeding conveyor mechanism 2 is used to transport workpieces processed by the grinding machine. The feeding conveyor mechanism 2 includes a feeding conveyor belt 24, and an adjustable-width guide plate 26 is provided above the feeding conveyor belt 24. The guide plate 26 is made of nylon and is used to guide the workpieces. In this embodiment, the workpieces are mainly neodymium iron boron products, but other workpieces can also be used. The feeding conveyor mechanism 2 also includes a support frame 25, which is installed at the bottom to support the feeding conveyor belt 24, preventing the feeding mechanism 3 from denting the feeding conveyor belt 24 and improving the overall strength of the feeding conveyor mechanism 2.

[0038] like Figures 3-5 As shown, the feeding mechanism 3 is located on one side of the feeding conveyor mechanism 2, as... Figure 3 As shown, the feeding mechanism 3 includes a fixed frame 19, which is mounted on the frame 1. A servo motor 21 is connected to the fixed frame 19 via a linear module. The position of the servo motor 21 is adjustable vertically. The servo motor 21 is connected to the linear module, and the movement of the linear module is driven by a lead screw 20. It can also be manually adjusted vertically. The upper end of the fixed frame 19 is provided with a hand crank 22 and a locking handle 23. The hand crank 22 is coaxially connected to the lead screw 20. The lead screw 20 can be driven by manually rotating the hand crank 22. The rotation of the lead screw 20 drives the linear module to move, which in turn drives the servo motor 21 to move in the vertical direction. The locking handle 23 is connected to the external thread of the lead screw 20 through its internal thread. When the locking handle 23 is rotated, the internal and external threads engage. Due to the thread design, when the locking handle 23 is rotated, it will move along the axial direction of the lead screw 20 until a part of the locking handle 23 contacts a certain position of the lead screw 20 and generates sufficient friction, thereby locking the lead screw 20. The servo motor 21 is horizontally set, and the output shaft of the servo motor 21 is coaxially connected to a feeding roller 18. The feeding roller 18 is located above the feeding conveyor mechanism 2 and is used to press the workpiece and provide friction for the workpiece to move in the conveying direction. The gap between the feeding conveyor belt 24 and the feeding roller 18 is adjustable, making it suitable for workpieces of different thicknesses. The linear speed of both can be adjusted. If the friction between the feeding conveyor belt 24 and the neodymium iron boron magnet is insufficient to overcome the weight of the neodymium iron boron magnet or the inertial force during the movement, slippage may occur. The friction force provided by the feeding roller 18 to the workpiece in the conveying direction can prevent the workpiece from getting stuck due to slippage.

[0039] In this embodiment, the lead screw 20 is a trapezoidal lead screw with a self-locking function. The self-locking function of the lead screw 20 can effectively control the linear module to stop moving, and at the same time prevent the linear module from vibrating or moving in the opposite direction (generally moving downward under the action of gravity), thereby ensuring the position stability of the servo motor 21 and avoiding vibration of the servo motor 21. This reduces the possibility of vibration of the output shaft of the servo motor 21 and effectively prevents the feed roller 18 from rotating due to vibration, which would cause the lead screw 20 to lose contact with the workpiece.

[0040] like Figure 6 As shown, the detection mechanism 4 is located between the loading conveyor mechanism 2 and the unloading conveyor mechanism, and is used to detect the thickness and width of the workpiece conveyed from the loading conveyor mechanism 2.

[0041] The detection mechanism 4 includes a support platform 8, the upper surface of which is a highly flat plane to ensure the detection accuracy of the workpiece. In this embodiment, a highly flat plane refers to the flatness accuracy of the upper surface of the support platform 8 being less than 1 / 10 of the workpiece's dimensional accuracy. The support platform 8 has an inverted U-shaped structure and is connected to the end of the feeding conveyor mechanism 2. The height of the support platform 8 is consistent with the height of the feeding conveyor belt 24. The workpiece continuously conveyed by the feeding conveyor belt 24 provides a forward thrust to the workpiece on the support platform 8, ensuring continued movement. Two workpiece guide blocks 15 are slidably connected to the upper surface of the support platform 8. The workpiece guide blocks 15 are arranged along the workpiece conveying direction. Sliding mechanisms are provided on both sides of the support platform 8 to drive the two workpiece guide blocks 15 to slide in opposite directions. The sliding mechanisms drive the two workpiece guide blocks 15 to change the width between them to accommodate workpieces of different widths.

[0042] The sliding mechanism is equipped with a width measuring sensor 13 that passes through the sliding hole 29 on the workpiece guide block 15. The width measuring sensor 13 is mounted on the slide table 9 on the sliding mechanism and moves synchronously with the slide table 9. The width measuring sensor 13 is perpendicular to the workpiece guide block 15. The width measuring sensor 13 extends and retracts within the sliding hole 29. It contacts the workpiece through two width measuring sensors 13 to detect the width of the workpiece. The sliding hole 29 is opened on the side of the workpiece guide block 15 that contacts the support table 8. The sliding hole 29 has a semi-circular structure. When the workpiece is located on the support table 8 and between the two sliding holes 29, the width measuring sensor 13 extends out and makes close contact with the workpiece to realize the measurement of the width dimension of the workpiece.

[0043] It should be noted that, in this embodiment, a limiting device (not shown in the figure) can be provided between the workpiece guide block 15 and the width measuring sensor 13. In this embodiment, the limiting device can be a limiting plate, which is located outside the workpiece guide block 15 and on the probe (output shaft, not the end in contact with the workpiece) of the width measuring sensor 13. The size of the limiting plate is larger than the size of the sliding hole 9. When changing products, the position of the limiting plate on the width measuring sensor 13 is manually adjusted according to the product size. Since the size of the limiting plate is larger than the size of the sliding hole 9, the width measuring... When the probe of sensor 13 extends and contacts the workpiece, the probe of the width distance sensor 13 stops when the limiting plate contacts the outer wall of the workpiece guide block 15 and cannot extend further. This controls the extension distance of the probe of the distance sensor. After changing products, different sizes affect the extension amount of the width distance sensor 13. By setting the limiting device, the extension amount of the probe of the width distance sensor 13 can be controlled, that is, the extension distance of the probe, to prevent the excessive extension amount from causing excessive collision force with the workpiece and damaging the probe, thereby effectively protecting the probe of the width distance sensor 13.

[0044] The end of the support platform 8 is provided with a support 16 for supporting the thickness distance sensor 17. The support 16 is located on the upper surface of the support platform 8 and is perpendicular to the support platform 8 in the length direction. The thickness distance sensor 17 is vertically mounted on the support. The probe of the thickness distance sensor 17 has a high degree of perpendicularity to the upper surface of the support platform 8, thereby ensuring the accuracy of workpiece thickness measurement. The thickness measuring sensor 17 has a self-adjusting function based on the workpiece thickness, that is, it has the function of moving in the vertical direction. In this embodiment, the thickness measuring sensor is equipped with a compression spring. When detecting workpieces of different thicknesses, the spring automatically compresses when the workpiece passes the probe of the thickness measuring sensor. The spring compresses workpieces of different thicknesses and automatically adjusts the amount of compression to adapt to workpieces of different thicknesses. In this embodiment, the setting of the spring is not specifically described. The thickness measuring sensor 17 is located behind the width measuring sensor 13. When the workpiece is below the thickness measuring sensor 17, the thickness measuring sensor 17 moves downward and presses the workpiece downward, so that the workpiece is in close contact with the upper end surface of the support table 8 to detect the thickness of the workpiece.

[0045] In this embodiment, single-point and multi-point detection of the workpiece width dimension can be achieved. During the workpiece width detection process, after the initial detection, as the workpiece moves forward, the width measuring sensor 13 continuously contacts both sides of the workpiece, achieving multi-point detection and further improving the accuracy of workpiece width dimension detection. This is especially beneficial for irregular workpieces, such as... Figure 7As shown, if a workpiece has local protrusions or depressions, manual inspection with calipers has certain limitations, leading to discrepancies between the measured dimensions and the actual dimensions, resulting in inaccurate measurement results. However, the dimension inspection method in this embodiment replaces manual inspection, continuously measuring the entire surface of the workpiece along the direction of workpiece movement. Local depressions or protrusions can be detected, and the measurement results are closer to the actual dimensions of the workpiece, greatly improving measurement accuracy and inspection efficiency.

[0046] Each workpiece guide block 15 has an inner notch 28 at its end corresponding to the probe of the thickness distance sensor 17. The notch 28 is arc-shaped. When the two workpiece guide blocks 15 slide toward each other, the notch 28 provides clearance for the thickness distance sensor 17. This prevents the workpiece guide block 15 from hitting the thickness distance sensor 17 when clamping the workpiece if the workpiece width is smaller than the probe width of the thickness distance sensor 17. The notch 28 can accommodate the probe of the thickness distance sensor 17, thus providing space for the probe and preventing the workpiece guide block 15 from damaging the thickness distance sensor 17.

[0047] The upper surface of the support platform 8 is provided with a second sliding hole 27, which is adapted to the first sliding hole 29. The second sliding hole 27 extends downward from the upper surface of the support platform 8. The probe of the width distance sensor 13 is located in the second sliding hole 27, so that the probe part of the width distance sensor 13 is sunk below the plane of the support platform 8, ensuring that the probe of the width distance sensor 13 can be compatible with thinner workpieces.

[0048] The inner sides of the front sections of the two workpiece guide blocks 15 are provided with inclined surfaces, so that the width of the front sections of the two workpiece guide blocks 15 is greater than the width of the middle section, making the front sections of the two workpiece guide blocks 15 flared out, so that the workpiece can enter between the two workpiece guide blocks 15 more easily for guiding the workpiece, while the middle section is used to clamp the workpiece to ensure that the workpiece does not jump left and right, so as to facilitate the detection of workpiece size.

[0049] After the workpiece to be tested enters from the front flared opening, it is pushed forward on the support platform 8 by the subsequent workpieces still on the feeding conveyor belt 24. It is straightened and clamped by two workpiece guide blocks 15. At this time, the positive and negative lead screw module 10 is activated to control the slide table 9, thereby driving the two workpiece guide blocks 15 to move, so as to adjust the distance between the two workpiece guide blocks 15. In order to ensure the smooth advancement of the workpiece, the clamping force is less than the pushing force of the workpiece.

[0050] The sliding mechanism includes a linear module 10 for forward and reverse leadscrews located below the support platform 8 and a slide 9 located above the linear module 10 for forward and reverse leadscrews. The two slides 9 move with the linear module 10 for forward and reverse leadscrews in a direction that moves closer to or further away from each other. The slide 9 is equipped with a telescopic cylinder 11 connected to the outside of the workpiece guide block 15. The movement of the two slides 9 drives the workpiece guide block 15 to move, thereby clamping the workpiece. The telescopic cylinder 11 drives the workpiece guide block 15 to slide, and the thrust of the telescopic cylinder 11 makes the workpiece guide block 15 clamp the workpiece, ensuring that the workpiece does not jump left or right. The main purpose of the slide table 9 is to adjust the distance between the two workpiece guide blocks 15. The slide table 9 and the workpiece guide blocks 15 move as a whole, while the thrust of the telescopic cylinder 11 can drive the workpiece guide block 15 to move independently, making small-range adjustments. At the same time, it can further clamp and give the workpiece guide block 15 a thrust. However, the slide table 9 drives its movement. After the slide table 9 stops moving, although the workpiece guide block 15 clamps the workpiece, there is no thrust acting on the workpiece guide block 15. At this time, the telescopic cylinder 11 plays the role of giving the workpiece guide block 15 a thrust.

[0051] By combining the linear module 10 with the telescopic cylinder 11, the clamping problem of workpieces of different sizes is solved. It has wide versatility, is suitable for testing products of different sizes, and is easy to switch between different products. The measurement range can be adjusted adaptively.

[0052] At least two sets of telescopic cylinders 11 are provided. The two sets of telescopic cylinders 11 are located on the outside of the two workpiece guide blocks 15 respectively. There are two on each side. One telescopic cylinder 11 is located at the front section of the workpiece guide block 15, and the other telescopic cylinder 11 is located at the middle section of the workpiece guide block 15. This improves the stability of workpiece clamping and ensures that no gaps appear in the width direction of the workpiece during inspection.

[0053] The slide table 9 is provided with a guide member 12, which is connected to the outer side of the workpiece guide block 15. The guide member 12 is located between the two telescopic cylinders 11 of each side of the workpiece guide block 15. The guide member 12 includes a bearing seat 14 and a guide rod, which is used to guide the sliding of the workpiece guide block 15. By connecting the guide member 12 with the workpiece guide blocks 15 on both sides, it is ensured that the end face of the straight section of the workpiece guide block 15 is always parallel.

[0054] The unloading conveying mechanism includes an unloading conveyor belt 5, which is connected to the end of the support platform 8 and is used to transport workpieces from the support platform 8. An adjustable guide plate 26 is also provided above the unloading conveyor belt 5 to guide and limit the transport of workpieces. The linear speed of the unloading conveyor belt 5 is greater than the linear speed of the workpiece feeding on the support platform 8, in order to increase the distance between workpieces, thereby making it easier to detect and reject defective workpieces.

[0055] The blowing mechanism 6 is located at the end of one side of the unloading conveyor mechanism and is used to blow unqualified workpieces off the unloading conveyor mechanism. In this embodiment, unqualified workpieces refer to workpieces whose width and thickness exceed the tolerance. The blowing mechanism 6 includes a detection switch for detecting workpieces, a nozzle, and a solenoid valve (not shown in the figure). The nozzle is connected to the exhaust port of the solenoid valve. The detection mechanism 4 is signal-connected to a control system. The control system is used to receive the workpiece width and thickness detected by the detection mechanism 4 and determine whether they exceed the threshold. The detection switch is signal-connected to the control system and receives the workpiece unqualified signal sent by the control system. When the detection switch receives the workpiece unqualified signal, the air inlet of the solenoid valve is connected to the air source, and the nozzle sprays compressed air to blow off the unqualified workpiece, while qualified workpieces continue to be transported to the next station via the unloading conveyor belt 5.

[0056] On the other side of the feeding conveyor belt 5, there is a collection box 7. The collection box 7 is adapted to the blowing mechanism 6, and the guide plate 26 on the feeding conveyor belt 5 is disconnected at the position of the collection box 7. When the nozzle blows the unqualified workpiece off, the unqualified workpiece can be received by the collection box 7.

[0057] It should be noted that in this embodiment, the device can be combined with a grinding machine to determine whether the dimensions of NdFeB products meet the standards and to determine the wear of the grinding machine's cutting tools by testing the product dimensions. Specifically, continuous data is collected and recorded to form a line graph or dot matrix of the measurement results, thereby providing feedback on the thickness or width variation trend of the NdFeB. As the cutting tool wears continuously during processing, the product dimensions show a trend of gradually increasing thickness or width. This trend indirectly provides feedback on the wear of the grinding machine's cutting tools. If products continuously exceed tolerances during the measurement process, it proves that the cutting tool wear is out of range, and the wear amount is the out-of-tolerance dimension of the workpiece. By linking the detection device with the grinding machine and using the feedback of out-of-tolerance data, automatic tool adjustment can be achieved.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A size measuring device, comprising a frame (1), characterized in that, The frame (1) is equipped with a feeding conveyor (2), a detection mechanism (4), a discharging conveyor, and a blowing mechanism (6), wherein: The feeding and conveying mechanism (2) is used for conveying the workpiece after grinding. The detection mechanism (4) is located between the loading conveyor (2) and the unloading conveyor, and is used to detect the thickness and width of the workpiece conveyed from the loading conveyor (2); The feeding conveyor mechanism is used to convey the workpieces conveyed from the inspection mechanism (4); The blowing mechanism (6) is located at the end of one side of the unloading conveying mechanism and is used to blow unqualified workpieces off the unloading conveying mechanism. The detection mechanism (4) includes a support platform (8), which is connected to the end of the feeding and conveying mechanism (2). Two workpiece guide blocks (15) are slidably connected above the support platform (8). The workpiece guide blocks (15) are arranged along the conveying direction of the workpiece. The two sides of the support platform (8) are provided with sliding mechanisms for driving the two workpiece guide blocks (15) to slide in opposite directions. A width measuring sensor (13) is provided above the sliding mechanism, which passes through the sliding hole (29) on the workpiece guide block (15). The width measuring sensor (13) extends and retracts within the sliding hole (29) to detect the width of the workpiece. The sliding hole (29) has a semi-circular structure. The end of the support platform (8) is provided with a support (16) for supporting the thickness measuring sensor (17). The thickness measuring sensor (17) is set vertically and is used to detect the thickness of the workpiece. The upper end face of the support platform (8) is provided with a sliding hole two (27), and the probe of the width distance sensor (13) is located in the sliding hole two (27), so that the probe of the width distance sensor (13) sinks below the plane of the support platform (8). Each of the workpiece guide blocks (15) has a notch (28) on the inner side of its end that corresponds to the probe of the thickness distance sensor (17). The inner side of the front section of the two workpiece guide blocks (15) is provided with an inclined surface, so that the width of the front section of the two workpiece guide blocks (15) is greater than the width of the middle section. The blowing mechanism includes a detection switch for detecting workpieces, a nozzle, and a solenoid valve. The nozzle is connected to the exhaust port of the solenoid valve. The detection mechanism (4) is signal-connected to a control system. The control system is used to receive the width and thickness of the workpiece detected by the detection mechanism (4) and determine whether it exceeds the threshold. The detection switch is signal-connected to the control system and receives the workpiece non-conforming signal sent by the control system. When the detection switch receives the workpiece non-conforming signal, the air inlet of the solenoid valve is connected to the air source, and the nozzle sprays compressed air to blow the workpiece off the unloading conveyor mechanism.

2. The size measuring device according to claim 1, characterized in that: The sliding mechanism includes a linear module (10) of positive and negative lead screws located below the support platform (8) and a slide (9) located above the linear module (10). The two slides (9) move toward each other or away from each other as the linear module (10) of positive and negative lead screws moves. The slide (9) is provided with a telescopic cylinder (11) connected to the outside of the workpiece guide block (15). The telescopic cylinder (11) drives the workpiece guide block (15) to slide.

3. The size measuring device according to claim 2, characterized in that: At least two sets of telescopic cylinders (11) are provided.

4. A size measuring device according to claim 2, characterized in that: A guide (12) is provided above the slide (9) to guide the sliding of the workpiece guide block (15).

5. A size measuring device according to claim 1, characterized in that: Above the frame (1) is a feeding mechanism (3) located on one side of the feeding conveying mechanism (2). The feeding mechanism (3) includes a fixed frame (19). A servo motor (21) is horizontally arranged on one side of the fixed frame (19). The position of the servo motor (21) is adjustable up and down. The output shaft of the servo motor (21) is coaxially connected to a feeding roller (18). The feeding roller (18) is located above the feeding conveying mechanism (2) and is used to press the workpiece and provide friction force to the workpiece to move in the conveying direction.

6. A size measuring device according to claim 5, characterized in that: The servo motor (21) is connected to the linear module, which is driven by a lead screw (20), which is a trapezoidal lead screw.

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