A kind of flaw detection device for machining parts of numerical control machine tool

Abstract

The application relates to the technical field of flaw detection, and discloses a flaw detection device for numerical control machine tool part machining, which comprises a conveying frame with supporting legs, a conveying mechanism is arranged in the conveying frame, the upper surface of one end of the conveying frame is fixedly connected with a detection box, entrances and exits are arranged on the two sides of the detection box close to the chain plate, the middle part of the upper surface of the detection box is fixedly connected with a mounting rod, the lower end of the mounting rod penetrates into the inside of the detection box and is fixedly connected with a mounting block, the bottom surface of the mounting block is fixedly connected with a visual detection camera, one side of the detection box close to the conveying frame is connected with a moving mechanism, and the output end of the moving mechanism is connected with an L-shaped plate. The flaw detection device for numerical control machine tool part machining is provided with the L-shaped plate carrying a standard part, can automatically move to the position below the camera in the detection gap to complete self-checking and calibration, does not need to stop and maintain, and solves the problem of efficiency loss caused by traditional regular stop and calibration.

Description

A defect detection device for CNC machine tool parts processing Technical Field

[0001] This invention relates to the field of defect detection technology, specifically to a defect detection device for CNC machine tool parts processing. Background Technology

[0002] CNC machine tools are machine tools that use digital information to automatically control mechanical motion and processing. In order to detect defects in a timely manner to reduce scrap rate and ensure that the processed parts meet design requirements and quality standards, it is often necessary to inspect the parts for defects. A common method is to use a vision inspection device to capture images of the workpiece surface and use algorithm analysis to identify defects such as scratches, cracks, deformations or color differences.

[0003] The patent with publication number CN220671291U discloses a mechanical parts defect detection device, including a detection table and a CCD vision inspection camera. The CCD vision inspection camera is connected inside the detection table. In this detection device, the telescopic end of the electric telescopic rod drives the mounting plate to transport the parts to a certain height. The servo motor is started, causing the two transmission rods threaded on the bidirectional lead screw to drive the fixed seat and the positioning plate to move relative to each other to clamp the parts. The CCD vision inspection camera is used for detection, and the drive motor drives the parts to rotate to detect various angles of the parts. The buffer plate has a certain buffering effect to avoid excessive clamping force and damage to the parts. When the buffer plate wears down and the buffering effect decreases, the positioning rod can be pulled out from the positioning plate to replace the buffer plate, which facilitates the detection of parts from multiple angles.

[0004] However, the aforementioned testing equipment still has the following problems in actual use:

[0005] When using inspection equipment to inspect the quality of CNC machine tool parts, the large number of workpieces to be inspected in a single batch usually requires the equipment to run continuously for extended periods. However, during equipment operation, slight deviations are unavoidable due to factors such as wear and mechanical vibration. Although these deviations are small, they accumulate over time and gradually affect the accuracy of the inspection equipment.

[0006] Current practice typically involves shutting down equipment for maintenance and calibration according to a predetermined schedule to promptly identify and correct potential errors. However, this method of periodic shutdown for maintenance disrupts the normal testing process, thereby reducing overall testing efficiency and causing inconvenience to production schedules. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a defect detection device for CNC machine tool parts processing, which can automatically perform calibration during defect detection, saving downtime.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a defect detection device for CNC machine tool parts processing, comprising a conveyor frame with supporting legs, a conveyor mechanism inside the conveyor frame, a detection box fixedly connected to the upper surface of one end of the conveyor frame, an inlet and outlet on both sides of the detection box near the chain plate, a mounting rod fixedly connected to the middle of the upper surface of the detection box, the lower end of the mounting rod penetrating into the interior of the detection box and fixedly connected to a mounting block, a visual inspection camera fixedly connected to the bottom surface of the mounting block, a moving mechanism connected to one side of the detection box near the conveyor frame, an L-shaped plate connected to the output end of the moving mechanism, an inlet penetrating through the end of the detection box near the conveyor frame, a vertical plate of the L-shaped plate penetrating through the inlet into the interior of the detection box, a visual inspection camera located above the horizontal plate of the L-shaped plate, the conveyor mechanism and the inlet and outlet, and the horizontal plate of the L-shaped plate aligned with the visual inspection camera, and a plurality of second mounting holes penetrating through the horizontal plate of the L-shaped plate.

[0009] Furthermore, the moving mechanism includes a moving motor, an auxiliary rod, and a ball screw. The outer wall of the moving motor is fixedly connected to the side of the testing box near the inlet. The output shaft of the moving motor is fixedly connected to one end of the ball screw. The auxiliary rod and the ball screw are arranged in parallel. The ends of the auxiliary rod and the ball screw away from the moving motor both pass through the testing box and the L-shaped plate. The auxiliary rod is slidably connected to the L-shaped plate and fixedly connected to the testing box. The ball screw is threadedly connected to the L-shaped plate and rotatably connected to the testing box.

[0010] Furthermore, two support plates are fixedly connected to one end of the L-shaped plate inside the inspection box. The inner walls of the two support plates are simultaneously connected to air jet pipes with several nozzles. An air pump is fixedly connected to the upper surface of the outer wall of the inspection box. An air jet pipe is fixedly connected to the output end of the air pump. The other end of the air jet pipe passes through the interior of the inspection box and is fixedly connected to one end of the air jet pipe. Several nozzles of the air jet pipe are all angled towards the visual inspection camera. The air pump, air jet pipe, air jet pipe and several nozzles are internally connected.

[0011] Furthermore, support bars are fitted and fixedly connected to the outer walls of both ends of the jet pipe. The other ends of the two support bars are simultaneously fastened to detachable plates by several No. 1 bolts. An antistatic soft brush is fixedly connected to one side of the detachable plate, and the bristles of the antistatic soft brush abut against the lens of the visual inspection camera.

[0012] Furthermore, several connecting blocks are fastened to the side of the mounting block near the visual inspection camera by several No. 2 bolts. At the same time, an outer cover fitted over the visual inspection camera is fixedly connected between the several connecting blocks. A transparent glass plate is fixedly connected to the lower end of the outer cover. The transparent glass plate is located at the lens of the visual inspection camera, and the transparent glass plate abuts against the bristles of the antistatic soft brush.

[0013] Furthermore, an air pump is fixedly connected to the upper surface of the outer wall of the testing chamber. An air pump is fixedly connected to the input end of the air pump. The other end of the air pump passes through the interior of the testing chamber and is fixedly connected to an air inlet box. The other end of the air inlet box is fixedly connected to the outer wall of the outer cover near the transparent glass plate. An air inlet is opened on the bottom surface of the air inlet box near the transparent glass plate. The air pump, air pump, air inlet box and air inlet are internally connected.

[0014] Furthermore, an extension rod is fixedly connected to the outer wall of the jet pipe at the end away from the blowing pipe, and a gear is fixedly connected to the other end of the extension rod. A rack plate is fixedly connected to the inner wall of the detection box near the inlet. The gear meshes with the rack plate. Both ends of the jet pipe are rotatably connected to two support plates respectively. The number of teeth on the rack plate is one-quarter of the number of teeth on the gear.

[0015] Furthermore, a limiting plate is fixedly connected to the side of the L-shaped plate near the jet pipe. The upper surface of the limiting plate abuts against two support bars. Magnets are fixedly connected to both the limiting plate and the side of the two support bars that abut against each other, and the magnets on the limiting plate and the support bars attract each other.

[0016] Furthermore, the conveying mechanism includes two transmission rods, the two ends of which are rotatably connected to the two ends of the conveying frame, and a reversing roller is sleeved and fixedly connected to the middle of each of the two transmission rods. A conveying motor is fixedly connected to the outer wall of one end of the conveying frame, and the output shaft of the conveying motor is fixedly connected to one end of one of the transmission rods. Sprockets are sleeved and fixedly connected to the outer walls of both ends of the two transmission rods. Two sprockets located on the same side of the conveying frame form a group, and chains are sleeved and meshed on the outside of both groups of sprockets. A chain plate is rotatably connected to the adjacent side of the two chains through a rotating shaft, and several No. 1 mounting holes are opened through the upper surface of the chain plate.

[0017] Furthermore, a contact sensor is fixedly connected to the side of the detection box away from the inlet.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This defect detection device for CNC machine tool parts processing uses an L-shaped plate to carry standard parts, which automatically moves to the area below the camera during the detection gap to complete self-check and calibration without stopping the machine for maintenance, thus solving the efficiency loss problem caused by traditional periodic machine stoppage calibration.

[0020] 2. This defect detection device for CNC machine tool parts processing integrates an air pump, an air extraction pump, and an anti-static soft brush, which can automatically remove dust and electrostatically adsorbed impurities from the lens surface and quickly discharge contaminants through the air extraction structure, reducing the false detection rate caused by lens contamination.

[0021] 3. The defect detection device for CNC machine tool parts processing has a transparent glass cover to prevent the brush from directly contacting the camera lens, reducing wear, and the detachable structure facilitates component replacement and reduces maintenance costs.

[0022] 4. In this type of defect detection device for CNC machine tool parts processing, the air jet pipe is folded through gear and rack linkage to reduce space occupation and avoid collision with the workpiece;

[0023] 5. This type of defect detection device for CNC machine tool parts processing uses a contact sensor to trigger a self-inspection process, and works with a PLC controller to achieve full automation of the process, reducing the need for manual operation and improving detection stability. Attached Figure Description

[0024] Figure 1 is a schematic diagram of the overall appearance of the present invention;

[0025] Figure 2 is an exploded view of the conveyor frame and conveyor mechanism of the present invention;

[0026] Figure 3 is an enlarged schematic diagram of point A in Figure 2 of this invention;

[0027] Figure 4 is a detailed connection diagram of the components of the present invention, such as the detection box, L-shaped plate, and mounting rod;

[0028] Figure 5 is a schematic diagram of the internal structure of the detection box of the present invention;

[0029] Figure 6 is a detailed connection diagram of the components of the present invention, such as the detection box, the suction pump, and the blowing pump.

[0030] Figure 7 is an enlarged schematic diagram of point B in Figure 6 of the present invention;

[0031] Figure 8 is a detailed connection diagram of the mounting rod, visual inspection camera, and outer cover of the present invention;

[0032] Figure 9 is a detailed connection diagram of the L-shaped plate, jet pipe and antistatic soft brush of the present invention.

[0033] Figure 10 is an enlarged schematic diagram of point C in Figure 9 of this invention.

[0034] In the diagram: 1. Conveyor frame; 2. Conveyor motor; 3. Chain plate; 4. Mounting hole 1; 5. Chain; 6. Detection box; 7. Inlet / outlet; 8. Air pump; 9. Mounting rod; 10. Air pump; 11. Inlet; 12. L-shaped plate; 13. Mounting hole 2; 14. Moving motor; 15. Transmission rod; 16. Sprocket; 17. Reversing roller; 18. Auxiliary rod; 19. Contact sensor; 20. Air jet pipe; 21. Ball screw; 22. Suction pipe; 23. Air inlet box; 24. Mounting block; 25. Air blowing pipe; 26. Support bar; 27. Removable plate; 28. Anti-static soft brush; 29. ​​Outer cover; 30. Transparent glass plate; 31. Rack plate; 32. Connecting block; 33. Visual inspection camera; 34. Air inlet; 35. Magnet; 36. Limiting plate; 37. Extension rod; 38. Gear; 39. Support plate. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] Please refer to Figures 1-10. A defect detection device for CNC machine tool parts processing includes a conveyor frame 1 with supporting legs. A conveying mechanism is provided inside the conveyor frame 1. A detection box 6 is fixedly connected to the upper surface of one end of the conveyor frame 1. The detection box 6 has inlets and outlets 7 on both sides near the end of the chain plate 3. A mounting rod 9 is fixedly connected to the middle of the upper surface of the detection box 6. The lower end of the mounting rod 9 penetrates into the interior of the detection box 6 and is fixedly connected to a mounting block 24. A visual inspection camera is fixedly connected to the bottom surface of the mounting block 24. The head 33, the inspection box 6 is connected to a moving mechanism on one side near the conveyor frame 1. The output end of the moving mechanism is connected to an L-shaped plate 12. An inlet 11 is opened through the end of the inspection box 6 near the conveyor frame 1. The vertical plate of the L-shaped plate 12 passes through the inlet 11 to the inside of the inspection box 6. The visual inspection camera 33 is located above the horizontal plate of the L-shaped plate 12, the conveyor mechanism and the inlet / outlet 7. The horizontal plate of the L-shaped plate 12 is aligned with the visual inspection camera 33. Several No. 2 mounting holes 13 are opened through the horizontal plate of the L-shaped plate 12.

[0037] The moving mechanism includes a moving motor 14, an auxiliary rod 18, and a ball screw 21. The outer wall of the moving motor 14 is fixedly connected to the side of the detection box 6 near the inlet 11. The output shaft of the moving motor 14 is fixedly connected to one end of the ball screw 21. The auxiliary rod 18 and the ball screw 21 are arranged in parallel. The ends of the auxiliary rod 18 and the ball screw 21 away from the moving motor 14 both pass through the detection box 6 and the L-shaped plate 12. The auxiliary rod 18 is slidably connected to the L-shaped plate 12 and fixedly connected to the detection box 6. The ball screw 21 is threadedly connected to the L-shaped plate 12 and rotatably connected to the detection box 6.

[0038] As shown in Figures 1 to 10, when using the defect detection device for CNC machine tool parts processing in this invention, firstly, the external fixture that can support the CNC machine tool parts to be inspected (hereinafter referred to as workpieces) is installed on the conveying mechanism, and the workpieces are installed at equal intervals on the conveying mechanism according to their size. However, a space needs to be reserved for subsequent self-inspection and calibration (for example, ten fixtures can be installed at equal intervals on the conveying mechanism, but only nine fixtures need to be installed here).

[0039] Then, the standard part of the workpiece to be inspected is installed on the horizontal plate of the L-shaped plate 12 using the same fixture through several mounting holes 13. After that, the inspection program of the visual inspection camera 33 is set by the PLC controller (hereinafter referred to as the controller, which is the prior art and will not be described in detail here), and the preliminary steps can be completed.

[0040] During inspection, the first workpiece is installed on the first fixture on the conveying mechanism. Then the controller starts the conveying mechanism, and the conveying mechanism transports the first workpiece into the inspection box 6 through one of the inlets 7. At this time, the vision inspection camera 33 is automatically started by the controller, and the controller stops the conveying mechanism, so that the first workpiece remains fixed relative to the vision inspection camera 33.

[0041] Once the vision inspection camera 33 is activated, it can perform normal inspection on the first workpiece. During the inspection process, the qualified or unqualified products will be displayed on the external monitor to help the inspector with subsequent processing (this is the inspection method of the existing vision inspection system, which will not be described in detail here).

[0042] During the inspection of the first workpiece by the visual inspection camera 33 and while the conveyor mechanism is stopped, the second workpiece can be fixed on the second fixture (of course, in actual processing, there may be more fixture positions on the conveyor mechanism, and the operation method is the same as described above; this is just for the sake of description). After the inspection of the first workpiece is completed, the conveyor mechanism starts again, and the first workpiece moves from the other entrance 7 of the inspection box 6 to the outside of the inspection box 6.

[0043] At the same time, the second workpiece moves into the inspection box 6 again and aligns with the vision inspection camera 33. At this time, the vision inspection camera 33 can inspect the second workpiece normally. Then, the above steps are repeated to inspect the workpieces on other fixtures. As the conveying mechanism operates, the holes previously reserved on the conveying mechanism will move into the inspection box 6 (for example, the conveying mechanism rotates a full circle).

[0044] When there is no workpiece below the visual inspection camera 33, the controller will automatically turn on the moving motor 14. The output shaft of the moving motor 14 drives the ball screw 21 to rotate. The ball screw 21, together with the auxiliary rod 18, will move the L-shaped plate 12 connected to the surface laterally, and thus move from the inlet 11 to directly below the visual inspection camera 33.

[0045] At this time, the visual inspection camera 33 will perform visual inspection on the standard part installed on the L-shaped plate 12. If the inspection result is within the allowable error range, then the visual inspection camera 33 has not exceeded the set error range. After the self-test calibration is completed, the conveying mechanism continues to start. At this time, the L-shaped plate 12 returns to its original position and waits for several workpieces to be inspected after the conveying mechanism goes up and down one circle.

[0046] If an abnormality is detected, it means that the visual inspection camera 33 has an error in its detection data. At this time, the controller will stop immediately and trigger an external audible and visual alarm to remind the inspector to repair the equipment. At the same time, several workpieces that were inspected in the previous round will be manually re-inspected. After the re-inspection, the unqualified products will be rejected. In this way, the time for equipment downtime and maintenance and calibration can be saved, thus improving the inspection efficiency.

[0047] As a preferred embodiment of the present invention, the L-shaped plate 12 is fixedly connected to two support plates 39 at one end inside the detection box 6. The inner walls of the two support plates 39 are simultaneously connected to a jet pipe 20 with several nozzles. An air pump 10 is fixedly connected to the upper surface of the outer wall of the detection box 6. An air pipe 25 is fixedly connected to the output end of the air pump 10. The other end of the air pipe 25 passes through the interior of the detection box 6 and is fixedly connected to one end of the jet pipe 20. Several nozzles of the jet pipe 20 are all angled toward the visual inspection camera 33. The air pump 10, the air pipe 25, the jet pipe 20 and the several nozzles are internally connected.

[0048] More specifically, because the inspection equipment is located inside the factory, dust from inside the factory or residual metal shavings that are not cleaned and adhere to the workpiece may adhere to the lens of the vision inspection camera 33 at the front, middle, and back of the workpiece. By setting up the air pump 10, air pipe 25, and air jet pipe 20, the controller can automatically start the air pump 10 during each self-inspection. Then, as the L-shaped plate 12 moves, the air jet pipe 20 reaches the vision inspection camera 33 earlier than the L-shaped plate 12. Therefore, the air pump 10, air pipe 25, and air jet pipe 20 can blow off the dust adhering to the surface of the vision inspection camera 33, improve the image clarity of the vision inspection camera 33, and reduce the probability of false detection due to contamination.

[0049] In addition, by setting up the support plate 39, the jet pipe 20 can be supported to prevent it from falling off.

[0050] As a preferred embodiment of the present invention, support bars 26 are fitted and fixedly connected to the outer walls of both ends of the jet pipe 20. The other ends of the two support bars 26 are simultaneously fastened to a detachable plate 27 by several No. 1 bolts. An antistatic soft brush 28 is fixedly connected to one side of the detachable plate 27. The bristles of the antistatic soft brush 28 abut against the lens of the visual inspection camera 33.

[0051] More specifically, since the workpiece does not come into contact with the vision inspection camera 33, the dust adheres to the lens of the vision inspection camera 33, usually by electrostatic adhesion. In this case, by setting a support strip 26, a detachable plate 27 and an anti-static soft brush 28 on the side of the air jet pipe 20 away from the L-shaped plate 12, the static electricity adhering to the lens of the vision inspection camera 33 can be removed by the anti-static soft brush 28, so that the dust can be blown off more conveniently and effectively when the air jet pipe 20 sprays air later.

[0052] In addition, since the support bar 26 and the detachable plate 27 are connected by bolt No. 1, when a lot of dust adheres to the surface of the antistatic soft brush 28, or when the antistatic soft brush 28 is worn and the antistatic effect deteriorates, the antistatic soft brush 28 can be cleaned or replaced by loosening bolt No. 1.

[0053] As a preferred embodiment of the present invention, the mounting block 24 is fastened to a plurality of connecting blocks 32 on the side near the visual inspection camera 33 by a plurality of No. 2 bolts. An outer cover 29 fitted over the visual inspection camera 33 is simultaneously fixedly connected between the plurality of connecting blocks 32. A transparent glass plate 30 is fixedly connected to the lower end of the outer cover 29. The transparent glass plate 30 is located at the lens of the visual inspection camera 33, and the transparent glass plate 30 abuts against the bristles of the antistatic soft brush 28.

[0054] More specifically, although the antistatic soft brush 28 is a soft brush, it may cause wear and scratches on the lens of the visual inspection camera 33 over time. In this case, by setting an outer cover 29 and a transparent glass plate 30 on the outside of the visual inspection camera 33, the visual inspection camera 33 can be wrapped inside, so that the antistatic soft brush 28 does not come into direct contact with the lens of the visual inspection camera 33, thereby reducing the probability of damage to the visual inspection camera 33.

[0055] Furthermore, since the outer cover 29 is connected to the mounting block 24 via the connecting block 32 and the second bolt, even if the antistatic soft brush 28 damages or scratches the transparent glass plate 30, the outer cover 29 and the transparent glass plate 30 can be replaced, saving on maintenance and replacement costs.

[0056] As a preferred embodiment of the present invention, an air pump 8 is fixedly connected to the upper surface of the outer wall of the test box 6, an air extraction pipe 22 is fixedly connected to the input end of the air pump 8, the other end of the air extraction pipe 22 passes through the interior of the test box 6 and is fixedly connected to an air inlet box 23, the other end of the air inlet box 23 is fixedly connected to the outer wall of the outer cover 29 near the transparent glass plate 30, and an air inlet 34 is opened on the bottom surface of the air inlet box 23 near the transparent glass plate 30. The air pump 8, the air extraction pipe 22, the air inlet box 23 and the air inlet 34 are internally connected.

[0057] More specifically, although the jet nozzle 20 can blow off the dust adhering to the lens of the visual inspection camera 33 (which, based on the above, is actually located on the outer cover 29 and the transparent glass plate 30), thereby reducing the probability of lens contamination, the scattered dust is still inside the inspection box 6. During or after the self-inspection process, this part of the flying dust may fall back onto the lens of the visual inspection camera 33. At this time, by setting up the suction pump 8, the suction pipe 22 and the air inlet box 23, the controller can start the suction pump 8 at the same time as the blowing pump 10 starts. At this time, the dust blown off by the jet nozzle 20 will be sucked into the air inlet 34 of the air inlet box 23, greatly reducing the probability that the dust is still inside the inspection box 6.

[0058] As a preferred embodiment of the present invention, an extension rod 37 is fixedly connected to the outer wall of the end of the jet pipe 20 away from the blowing pipe 25, and a gear 38 is fixedly connected to the other end of the extension rod 37. A rack plate 31 is fixedly connected to the inner wall of the detection box 6 near the inlet 11. The gear 38 meshes with the rack plate 31. Both ends of the jet pipe 20 are rotatably connected to two support plates 39 respectively. The number of teeth on the rack plate 31 is one-quarter of the number of teeth on the gear 38.

[0059] More specifically, because components such as the jet pipe 20, support bar 26, and antistatic soft brush 28 have a certain length, in order to prevent these components from affecting the workpiece or fixture during normal workpiece inspection, an extension rod 37, gear 38, and rack plate 31 are provided. When the L-shaped plate 12 moves towards the vision inspection camera 33, the gear 38 rotates through the rack plate 31, thereby turning the jet pipe 20, support bar 26, and antistatic soft brush 28 downwards. At this time, the nozzle of the jet pipe 20 and the antistatic soft brush 28 are both facing the vision inspection camera 33.

[0060] When the components such as the jet pipe 20, support bar 26, and antistatic soft brush 28 finish their self-inspection and begin to return, the gear 38 contacts the rack plate 31 again and begins to reverse. At this time, the components such as the jet pipe 20, support bar 26, and antistatic soft brush 28 can be turned upwards (as shown in Figure 9). This reduces the lateral space occupied by the components such as the jet pipe 20, support bar 26, and antistatic soft brush 28, thereby reducing the probability of collision with the workpiece or fixture.

[0061] As a preferred embodiment of the present invention, a limiting plate 36 is fixedly connected to the side of the L-shaped plate 12 near the jet pipe 20. The upper surface of the limiting plate 36 abuts against the two support bars 26. Magnets 35 are fixedly connected to both the limiting plate 36 and the side of the two support bars 26 that abut against each other, and the limiting plate 36 is attracted to the magnets 35 on the support bars 26.

[0062] More specifically, after the gear 38 disengages from the rack plate 31, the components such as the jet pipe 20, support bar 26, and antistatic soft brush 28 have a certain weight. To prevent these components from folding and rotating downwards on their own, a limiting plate 36 is set up to provide support for the support bar 26, so that the support bar 26 can only turn from a vertical state to a horizontal state (i.e., 90°). This ensures that the jet pipe 20 and the antistatic soft brush 28 are aligned with the visual inspection camera 33.

[0063] As a preferred embodiment of the present invention, the conveying mechanism includes two transmission rods 15, the two ends of which are rotatably connected to the two ends of the conveying frame 1, and a reversing roller 17 is sleeved and fixedly connected to the middle of each of the two transmission rods 15. A conveying motor 2 is fixedly connected to the outer wall of one end of the conveying frame 1, and the output shaft of the conveying motor 2 is fixedly connected to one end of one of the transmission rods 15. A sprocket 16 is sleeved and fixedly connected to the outer walls of both ends of the two transmission rods 15. Two sprockets 16 located on the same side of the conveying frame 1 form a group. Chains 5 are sleeved and meshed on the outside of both groups of sprockets 16. A chain plate 3 is rotatably connected to the adjacent side of the two chains 5 through a rotating shaft. A plurality of No. 1 mounting holes 4 are opened through the upper surface of the chain plate 3.

[0064] More specifically, when the workpiece needs to be processed, simply install the fixture that matches the workpiece onto the chain plate 3 through the first mounting hole 4, and distribute several fixtures equidistantly (note that space needs to be reserved at one of the positions). During inspection, simply turn on the conveyor motor 2 through the controller. The output shaft of the conveyor motor 2 drives the transmission rod 15 connected to it to rotate. Then, the transmission rod 15 drives the reversing roller 17 and two sprockets 16 connected to it to rotate together. After the two sprockets 16 rotate, they can drive the other two sprockets 16 and another reversing roller 17 to rotate through the chain 5. As the chain 5 and the reversing roller 17 rotate, the chain plate 3 located outside the reversing roller 17 and connected to the chain 5 can move laterally, thereby displacing the fixture and workpiece connected to the surface.

[0065] As a preferred embodiment of the present invention, a contact sensor 19 is fixedly connected to the side of the detection box 6 away from the inlet 11.

[0066] More specifically, by setting a contact sensor 19, a trigger block can be installed at the position of the chain plate 3 where no clamp is installed. In this way, when the L-shaped plate 12 moves to the position of the contact sensor 19, the contact sensor 19 will automatically start upon contact with the signal without the need for additional control.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A defect detection device for machining CNC machine tool parts, characterized in that: The system includes a conveyor frame (1) with supporting legs, an internal conveying mechanism, and a detection box (6) fixedly connected to the upper surface of one end of the conveyor frame (1). The detection box (6) has inlets and outlets (7) on both sides near the chain plate (3). An installation rod (9) is fixedly connected to the middle of the upper surface of the detection box (6). The lower end of the installation rod (9) extends into the interior of the detection box (6) and is fixedly connected to an installation block (24). A visual inspection camera (33) is fixedly connected to the bottom surface of the installation block (24). A moving mechanism is connected to one side of the conveyor frame (1). The output end of the moving mechanism is connected to an L-shaped plate (12). The moving mechanism includes a moving motor (14), an auxiliary rod (18), and a ball screw (21). An inlet (11) is provided through the end of the inspection box (6) near the conveyor frame (1). The vertical plate of the L-shaped plate (12) extends through the inlet (11) into the inspection box (6). The visual inspection camera (33) is located above the horizontal plate of the L-shaped plate (12), the conveyor mechanism, and the inlet / outlet (7). The horizontal plate of the L-shaped plate (12) The plate has several No. 2 mounting holes (13) through it. The standard parts for inspecting the workpiece are installed on the horizontal plate of the L-shaped plate (12) through the several No. 2 mounting holes (13). When there is no workpiece to be inspected below the visual inspection camera (33), the controller automatically turns on the moving motor (14). The output shaft of the moving motor (14) drives the ball screw (21) to rotate. The ball screw (21) cooperates with the auxiliary rod (18) to move the L-shaped plate (12) connected to the surface laterally, so that it can move from the inlet (11) to directly below the visual inspection camera (33); the L-shaped plate (12) Two support plates (39) are fixedly connected to one end of the inside of the detection box (6). The inner walls of the two support plates (39) are connected to jet pipes (20) with several nozzles. Support strips (26) are fitted and fixedly connected to the outer walls of both ends of the jet pipes (20). The other ends of the two support strips (26) are fastened to a detachable plate (27) by several No. 1 bolts. An antistatic soft brush (28) is fixedly connected to one side of the detachable plate (27). The bristles of the antistatic soft brush (28) abut against the lens of the visual inspection camera (33).

2. The defect detection device for CNC machine tool parts processing according to claim 1, characterized in that: The outer wall of the moving motor (14) is fixedly connected to the side of the test box (6) near the inlet (11). The output shaft of the moving motor (14) is fixedly connected to one end of the ball screw (21). The auxiliary rod (18) and the ball screw (21) are arranged in parallel. The ends of the auxiliary rod (18) and the ball screw (21) away from the moving motor (14) both pass through the test box (6) and the L-shaped plate (12). The auxiliary rod (18) is slidably connected to the L-shaped plate (12) and fixedly connected to the test box (6). The ball screw (21) is threadedly connected to the L-shaped plate (12) and rotatably connected to the test box (6).

3. The defect detection device for CNC machine tool parts processing according to claim 2, characterized in that: An air pump (10) is fixedly connected to the upper surface of the outer wall of the detection box (6). An air pipe (25) is fixedly connected to the output end of the air pump (10). The other end of the air pipe (25) passes through the interior of the detection box (6) and is fixedly connected to one end of the jet pipe (20). Several nozzles of the jet pipe (20) are all angled toward the visual detection camera (33). The air pump (10), air pipe (25), jet pipe (20) and several nozzles are internally connected.

4. The defect detection device for CNC machine tool parts processing according to claim 1, characterized in that: The mounting block (24) is fastened to a number of connecting blocks (32) on the side near the visual inspection camera (33) by a number of No. 2 bolts. The connecting blocks (32) are simultaneously fixedly connected to an outer cover (29) that is sleeved on the outside of the visual inspection camera (33). A transparent glass plate (30) is fixedly connected to the lower end of the outer cover (29). The transparent glass plate (30) is located at the lens of the visual inspection camera (33), and the transparent glass plate (30) abuts against the bristles of the antistatic soft brush (28).

5. The defect detection device for CNC machine tool parts processing according to claim 4, characterized in that: An air pump (8) is fixedly connected to the upper surface of the outer wall of the test box (6). An air extraction pipe (22) is fixedly connected to the input end of the air pump (8). The other end of the air extraction pipe (22) passes through the interior of the test box (6) and is fixedly connected to an air inlet box (23). The other end of the air inlet box (23) is fixedly connected to the outer wall of the outer cover (29) near the transparent glass plate (30). An air inlet (34) is opened on the bottom surface of the air inlet box (23) near the transparent glass plate (30). The air pump (8), the air extraction pipe (22), the air inlet box (23) and the air inlet (34) are internally connected.

6. The defect detection device for CNC machine tool parts processing according to claim 5, characterized in that: An extension rod (37) is fixedly connected to the outer wall of the end of the jet pipe (20) away from the blowing pipe (25). A gear (38) is fixedly connected to the other end of the extension rod (37). A rack plate (31) is fixedly connected to the inner wall of the detection box (6) near the inlet (11). The gear (38) meshes with the rack plate (31). The two ends of the jet pipe (20) are rotatably connected to two support plates (39) respectively. The number of teeth of the rack plate (31) is one-quarter of the number of teeth of the gear (38).

7. A defect detection device for CNC machine tool parts processing according to claim 6, characterized in that: A limiting plate (36) is fixedly connected to the side of the L-shaped plate (12) near the jet pipe (20). The upper surface of the limiting plate (36) abuts against the two support bars (26). Magnets (35) are fixedly connected to the side of the limiting plate (36) and the two support bars (26) that abut against each other. The limiting plate (36) attracts the magnets (35) on the support bars (26).

8. A defect detection device for CNC machine tool parts processing according to claim 7, characterized in that: The conveying mechanism includes two transmission rods (15), the two ends of which are rotatably connected to the two ends of the conveying frame (1), and a reversing roller (17) is sleeved and fixedly connected to the middle of each of the two transmission rods (15). A conveying motor (2) is fixedly connected to the outer wall of one end of the conveying frame (1). The output shaft of the conveying motor (2) is fixedly connected to one end of one of the transmission rods (15). A sprocket (16) is sleeved and fixedly connected to the outer walls of both ends of the two transmission rods (15). Two sprockets (16) located on the same side of the conveying frame (1) form a group. Chains (5) are sleeved and meshed on the outside of both groups of sprockets (16). A chain plate (3) is rotatably connected to the adjacent side of the two chains (5) through a rotating shaft. Several No. 1 mounting holes (4) are opened through the upper surface of the chain plate (3).

9. A defect detection device for CNC machine tool parts processing according to claim 8, characterized in that: A contact sensor (19) is fixedly connected to the side of the detection box (6) away from the inlet (11).

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