High-precision vehicle door tray detection tool and detection method thereof

Abstract

The invention discloses a high-precision vehicle door tray detection tool and a detection method thereof, and relates to the field of tray detection tools, the high-precision vehicle door tray detection tool comprises a detection tool fixing support arm system, a hinge detection system, a support block detection system and an operation platform, the detection tool fixing support arm system is used for providing stable support for the whole detection tool and realizing height adjustment; the hinge detection system is used for detecting the position precision and the coaxiality of hinge holes of the vehicle door tray, and the supporting block detection system is used for detecting the Y-direction size and the fitting precision of rear clamping blocks of the vehicle door tray. The free switching structure and the detachable structure of the positioning fulcrum system are improved, rapid switching, adjusting and automatic fixing of vehicle body positioning fulcrums are achieved, one lifting appliance is made to adapt to various platform vehicle types, and flexibility and high positioning precision are achieved.

Description

Technical Field

[0001] This application relates to the field of pallet inspection tools, and in particular to high-precision vehicle door pallet inspection tools and their inspection methods. Background Technology

[0002] In the final assembly of passenger vehicles, car doors are generally transported and assembled on door trays. With the improvement of automation, door sealing strips are mostly automatically bonded and assembled using automatic rolling equipment. The automatic rolling equipment for door sealing strips takes pictures of the characteristic holes of the door, judges the consistency of the door on the tray based on the picture results, and then rolls the sealing strip. The positional accuracy of the door on the door tray is required to be high. The comprehensive accuracy of the front and rear clamping position of the door on the tray relative to the clamping positioning hole is: X-axis ±15mm, Y-axis ±10mm, Z-axis ±5mm. The posture consistency accuracy of the door on the tray (with the center of the clamping point on the upper front of the door as the positioning point, the posture consistency accuracy of the door on the tray is: ±1° around the Y-axis, ±1° around the Z-axis, and ±1° around the X-axis.

[0003] The number of door trays is enormous, with approximately 150-250 in the final assembly workshop. Consistency is difficult to guarantee through mechanical assembly alone. Furthermore, there are door trays that fail to pass the automatic rolling equipment for door seals, newly added door trays, and door trays that have been bumped and deformed, which cannot be adjusted in a targeted manner. A comprehensive inspection of the trays would take a long time, which would affect both tray repair and production.

[0004] Therefore, a high-precision door tray inspection solution is needed. This solution uses upper and lower positioning pins of the inspection fixture to insert into the hinge holes of the door tray to detect the hinge accuracy of the door tray. It also checks the Y-axis dimension of the door tray by matching the sliding inspection block with the rear clamping block of the door tray. This avoids the problem that the consistency of the door tray is difficult to guarantee through mechanical assembly alone. It also avoids the problems of door trays that fail to be photographed by the automatic rolling equipment for door seals, newly added door trays, and door trays that cannot be adjusted in a targeted manner after being bumped and deformed. Summary of the Invention

[0005] The purpose of this invention is to provide a high-precision door tray inspection tool and its inspection method, which at least solves a technical problem that is difficult to guarantee the consistency of door trays through mechanical assembly alone, and also addresses the issues of door trays that fail to pass the automatic rolling equipment for door seals, newly added door trays, and door trays that cannot be specifically inspected after being bumped and deformed.

[0006] This invention provides the following solution:

[0007] According to one aspect of the present invention, a high-precision door tray inspection fixture is provided, comprising:

[0008] The fixture includes a fixed support arm system, a hinge detection system, a support block detection system, and an operating platform. The fixed support arm system provides stable support for the entire fixture and enables height adjustment. The hinge detection system is used to detect the positional accuracy and coaxiality of the hinge holes in the door tray. The support block detection system is used to detect the Y-axis dimension and fitting accuracy of the rear clamping block of the door tray.

[0009] Furthermore, the fixture fixing support system includes several fixture fixing welding bases arranged on both sides of the operating platform. The fixture fixing welding bases are welded to the operating platform. Height adjusting bolts are fixed at the four corners of the fixture fixing welding bases. The height adjusting bolts pass through the height adjusting connecting plate. Nuts that are threadedly connected to the height adjusting bolts are respectively provided on the upper and lower sides of the four corners of the height adjusting connecting plate. A fixture column is fixed on the upper surface of the height adjusting connecting plate. A fixture lateral stabilizing tie rod is fixed on the opposite side of two adjacent fixture columns.

[0010] Furthermore, the hinge detection system includes a column mounting panel, a lower hinge detection component, and an upper hinge detection component. The column mounting panel is fixed to the top of the fixture fixing arm system. An arc-shaped hinge detection guide rail is fixed to the surface of the column mounting panel. A rotating positioning plate is slidably connected to the hinge detection guide rail. An operating handle is fixed to the surface of the rotating positioning plate. A rotating positioning slot is opened on the surface of the column mounting panel.

[0011] Furthermore, the lower hinge detection assembly includes a lower hinge detection connecting plate and a lower hinge detection pin. One end of the lower hinge detection connecting plate is fixedly connected to the operating handle, and the lower hinge detection pin is fixedly disposed at the other end of the lower hinge detection connecting plate. The upper hinge detection assembly includes an upper hinge detection connecting plate and an upper hinge detection pin. The upper hinge detection connecting plate is connected to the rotary positioning plate through a parallel linkage mechanism, and the upper hinge detection pin is fixedly disposed at one end of the upper hinge detection connecting plate.

[0012] Furthermore, a height positioning plate one and a height positioning plate two are fixedly provided on the surface of the column mounting panel. The height positioning plate one and the height positioning plate two are used to provide reference positioning in the Z direction for the lower hinge detection pin and the upper hinge detection pin, respectively.

[0013] Furthermore, the block detection system includes a block detection system column, a mounting plate, a Y-axis moving mechanism, and an X-axis moving mechanism. The block detection system column is fixed to the top of the fixture fixing support arm system, and the mounting plate is horizontally fixed to the top of the block detection system column.

[0014] Furthermore, the Y-axis moving mechanism includes a Y-axis moving linear guide rail, a slider retraction limiting guide block, a slider extension limiting guide block, and a Y-axis moving knob plunger. The Y-axis moving linear guide rail is horizontally fixed on the mounting plate. The slider retraction limiting guide block and the slider extension limiting guide block are respectively fixed at both ends of the Y-axis moving linear guide rail. The Y-axis moving knob plunger is threadedly connected to the slider of the Y-axis moving linear guide rail. A positioning hole is provided on the surface of the mounting plate.

[0015] Furthermore, the X-axis moving mechanism includes an X-axis moving linear guide rail, an X-axis moving limiting guide block, and an X-axis moving knob plunger. The X-axis moving linear guide rail is horizontally fixed on the slider of the Y-axis moving linear guide rail. The X-axis moving limiting guide block is fixed on the slider of the Y-axis moving linear guide rail and located on one side of the X-axis moving linear guide rail. The X-axis moving knob plunger is threadedly connected to the slider of the X-axis moving linear guide rail. A second positioning hole is provided on the fixed guide rail of the X-axis moving linear guide rail corresponding to the locking position of the X-axis moving knob plunger.

[0016] The pallet detection system also includes a right-angle bracket and a detection block. The right-angle bracket is vertically fixed on the slider of the X-axis linear guide rail. The detection block is fixedly installed on the top of the right-angle bracket. The detection surface of the detection block is adapted to the contact surface of the door tray rear clamp block.

[0017] The above solution achieves the following beneficial technical effects:

[0018] This application visualizes the precision requirements of the door tray through the inspection tool, realizing the transformation of the precision requirements of the door tray from digital to physical, improving the freely switchable and detachable structure of the positioning fulcrum system, realizing the rapid switching, adjustment and automatic fixing of the vehicle body positioning fulcrum, making one type of lifting tool adaptable to multiple platform models, achieving flexibility and high positioning accuracy, and in particular solving the problem of low positioning accuracy caused by high flexibility lifting tools when multiple vehicle models with completely different vehicle body positioning fulcrum holes are on the same line.

[0019] This application enables rapid calibration of the hinge holes in the door tray by detecting the position of the door hinge holes, calibrating the accuracy of the door tray in the X, Z, RX, and RY directions, and detecting the accuracy of the door in the Y and RZ directions using a door tray rear clamping block inspection device. This improves the pass rate of the automatic door rolling sealing strip equipment, enhances the bonding quality of the door sealing strip, reduces the adjustment time of the door tray hinge holes, and improves maintenance efficiency.

[0020] A method for detecting a high-precision vehicle door tray gauge includes:

[0021] S1. Fixture installation and debugging: Weld the fixture base to the steel platform, adjust the height adjustment bolts to calibrate the level, and install the hinge detection system and block detection system components to ensure smooth movement and accurate positioning.

[0022] S2. Pallet Positioning: Place the door pallet to be inspected stably on the operating platform, aligning it with the reference surface of the inspection tool;

[0023] S3, Hinge hole inspection: The operating handle drives the rotating positioning plate to engage with the positioning slot, aligning the lower hinge detection pin and the upper hinge detection pin and inserting them into the tray hinge hole to inspect the positional accuracy and coaxiality.

[0024] S4. Rear clamping block detection: Adjust the Y-axis moving mechanism and the X-axis moving mechanism, lock the Y-axis moving knob plunger and the X-axis moving knob plunger, and detect the Y-axis dimension and fitting accuracy by having the detection block fit the tray rear clamping block;

[0025] S5. Result processing: Qualified pallets are removed, and unqualified pallets are re-inspected after adjustment according to the deviation data.

[0026] This application enables rapid calibration and online deployment of door trays, reducing maintenance and adjustment time.

[0027] This application detects door tray hinge accuracy by inspecting the position, coaxiality, and rear clamping block position of the door hinge positioning holes. It uses upper and lower positioning pins of a gauge inserted into the hinge holes to check the hinge accuracy, and then checks the Y-axis dimension of the door tray by matching the sliding gauge block with the rear clamping block. This inspection method allows for rapid adjustment of the door tray hinge holes and rear clamping block position, improving the high positioning accuracy of the door tray. In particular, it solves the problem of slow door tray adjustment and lack of adjustment direction after the automatic door sealing strip rolling equipment fails to take a picture, significantly reducing production tray repair time. The time required for single tray adjustment has been reduced from no adjustment direction to only 30 minutes.

[0028] This application improves the positional accuracy of the door on the door tray by using a gauge, ensuring the pass rate of the automatic rolling equipment for door sealing strips and the bonding quality of the sealing strips. It can quickly inspect problematic trays, and the gauge can clearly identify the deviation position and size of the problematic trays, saving door tray adjustment time and reducing the adjustment cycle of subsequent new door trays.

[0029] This application achieves high-precision mounting of the door on the door tray by inspecting the upper and lower hinges and the rear clamping block, enabling rapid calibration of the door tray. The precision requirements of the door tray are visualized through the inspection tool, and the inspection of the tool allows for rapid adjustment and deployment of new trays, reducing the adjustment cycle and improving the maintenance efficiency of the tray. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of a high-precision vehicle door tray inspection tool and its inspection method provided by one or more embodiments of the present invention.

[0031] Figure 2 This is a schematic diagram of the fixture fixing support system structure of a high-precision vehicle door tray fixture and its testing method provided by one or more embodiments of the present invention.

[0032] Figure 3 This is a schematic diagram of the hinge detection system of a high-precision door tray inspection tool and its detection method provided by one or more embodiments of the present invention.

[0033] Figure 4 This is a schematic diagram of the structure of a high-precision door pallet inspection tool and its inspection method provided by one or more embodiments of the present invention.

[0034] 1. Fixture fixed welding base; 2. Height adjusting bolt; 3. Height adjusting connecting plate; 4. Fixture column; 5. Fixture lateral stabilizing tie rod; 6. Column mounting panel; 7. Operating handle; 8. Rotary positioning plate; 9. Rotary positioning slot; 10. Hinge detection guide rail; 11. Lower hinge detection connecting plate; 12. Lower hinge detection pin; 13. Upper hinge detection connecting plate; 14. Upper hinge detection pin; 15. Height positioning plate one; 16. Height positioning plate two; 17. Block detection system column; 18. Mounting plate; 19. Y-axis linear guide rail; 20. Slider retraction limit guide block; 21. Slider extension limit guide block; 22. Y-axis movement knob plunger; 23. X-axis movement limit guide block; 24. X-axis movement linear guide rail; 25. X-axis movement knob plunger; 26. Right angle bracket; 27. Detection block. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figure 1-4 The high-precision door tray inspection tool shown includes:

[0037] The fixture includes a fixed support arm system, a hinge detection system, a support block detection system, and an operating platform. The fixed support arm system provides stable support for the entire fixture and enables height adjustment. The hinge detection system is used to detect the positional accuracy and coaxiality of the hinge holes in the door tray. The support block detection system is used to detect the Y-axis dimension and fitting accuracy of the rear clamping block of the door tray.

[0038] Specifically, this application uses a hinge detection system and a support block detection system to detect door hinges and supports, which can quickly repair problematic pallets and greatly improve the calibration efficiency before new pallets are put into production.

[0039] The fixture fixing support system includes several fixture fixing welding bases 1 set on both sides of the operating platform. The fixture fixing welding bases 1 are welded to the operating platform. Height adjusting bolts 2 are fixed at the four corners of the fixture fixing welding bases 1. The height adjusting bolts 2 pass through the height adjusting connecting plate 3. Nuts that are threadedly connected to the height adjusting bolts 2 are set on the upper and lower sides of the four corners of the height adjusting connecting plate 3. A fixture column 4 is fixed on the upper surface of the height adjusting connecting plate 3. A fixture lateral stabilizing tie rod 5 is fixed on the opposite side of two adjacent fixture columns 4.

[0040] Specifically, the fixture is fixedly welded to the steel platform to ensure a firm fit. The height of the entire system is leveled by adjusting the height of the connecting plate 3 by rotating the nut. The uprights and horizontal stabilizing rods form the frame of the whole machine and play a stabilizing role.

[0041] The hinge detection system includes a column mounting panel 6, a lower hinge detection component, and an upper hinge detection component. The column mounting panel 6 is fixed on the top of the fixture fixing arm system. An arc-shaped hinge detection guide rail 10 is fixed on the surface of the column mounting panel 6. A rotating positioning plate 8 is slidably connected to the hinge detection guide rail 10. An operating handle 7 is fixed on the surface of the rotating positioning plate 8. A rotating positioning slot 9 is opened on the surface of the column mounting panel 6.

[0042] Specifically, the arc-shaped hinge detection guide rail 10 allows the rotary positioning plate 8 to rotate as it slides along it. The column mounting panel 6 serves as the mounting base and carrier for the entire hinge detection system, firmly mounted on the fixture column 4, providing a stable and precise reference platform for the entire hinge detection system. The inspector holds the rotary positioning plate 8 and rotates it via the operating handle 7. The lower and upper hinge detection components are used to inspect the mounting holes of the upper and lower hinges of the workpiece. The rotary positioning plate 8, in conjunction with the hinge detection guide rail 10, transforms the "lifting" action of the operating handle 7 into a composite motion of "rotating and lifting" with a specific trajectory. The hinge detection guide rail 10 provides precise path guidance for the motion, ensuring that the detection pin can approach or leave the workpiece at the correct angle and trajectory. When the operator lifts the detection system and rotates it to the detection position via the handle, the rotary positioning plate 8 precisely engages with the rotary positioning slot 9, thereby locking the hinge detection system in the detection position and preventing shaking or retraction during the insertion of the detection pin, ensuring the repeatability and stability of the detection.

[0043] The lower hinge detection assembly includes a lower hinge detection connecting plate 11 and a lower hinge detection pin 12. One end of the lower hinge detection connecting plate 11 is fixedly connected to the operating handle 7, and the lower hinge detection pin 12 is fixedly mounted on the other end of the lower hinge detection connecting plate 11. The upper hinge detection assembly includes an upper hinge detection connecting plate 13 and an upper hinge detection pin 14. The upper hinge detection connecting plate 13 is connected to the rotary positioning plate 8 via a parallel linkage mechanism, and the upper hinge detection pin 14 is fixedly mounted on one end of the upper hinge detection connecting plate 13. The parallel linkage mechanism includes a driving link and a driven link. Two driving links are provided and symmetrically arranged on both sides of the upper hinge detection connecting plate 13. One end of the rod is hinged to the rotary positioning plate 8 via a hinge shaft, and the other end is hinged to the upper hinge detection connecting plate 13 via a joint bearing. There are two driven connecting rods, which are parallel to the active connecting rod and have the same length. One end of the driven connecting rod is hinged to the upper hinge detection connecting plate 13 via a sliding hinge shaft, and the other end is embedded in the elongated guide hole opened on the fixed guide plate via a hinge shaft, and can slide linearly along the elongated guide hole. The active connecting rod and the driven connecting rod form a parallelogram transmission structure to ensure that the upper hinge detection connecting plate 13 always maintains a parallel attitude with the hinge end of the rotary positioning plate 8 during the movement, so as to realize the synchronous movement of the upper hinge detection pin 14 and the lower hinge detection pin 12.

[0044] Specifically, the lower hinge detection connecting plate 11 is used to transmit the movement of the handle to the lower hinge detection pin 12 to drive it to move. The lower hinge detection pin 12 is used to detect the position of the lower hinge mounting hole of the workpiece. The upper hinge detection component has the same function as the lower hinge component and is used to detect the position of the upper hinge mounting hole of the workpiece. The upper hinge detection component is connected to the rotary positioning plate 8 through a parallel linkage mechanism to ensure that the upper and lower detection pins can move synchronously and in a coordinated manner to achieve the effect of synchronous detection.

[0045] The surface of the column mounting panel 6 is also fixedly provided with a height positioning plate 15 and a height positioning plate 16. The height positioning plate 15 corresponds to the height setting of the lower hinge detection pin 12, and the height positioning plate 16 corresponds to the height setting of the upper hinge detection pin 14. The height positioning plate 15 and the height positioning plate 16 are used to provide the reference positioning in the Z direction for the lower hinge detection pin 12 and the upper hinge detection pin 14 respectively.

[0046] Specifically, during inspection, the edge of the workpiece is tightly fitted with a specific surface of the height positioning plate to ensure that the position of the inspection pin in the Z direction is consistent each time, thereby achieving accurate detection of the hole height.

[0047] The block detection system includes a block detection system column 17, a mounting plate 18, a Y-axis moving mechanism, and an X-axis moving mechanism. The block detection system column 17 is fixed on the top of the fixture fixing arm system. The mounting plate 18 is horizontally fixed on the top of the block detection system column 17. The Y-axis moving mechanism includes a Y-axis moving linear guide rail 19, a slider retraction limiting guide groove block 20, a slider extension limiting guide groove block 21, and a Y-axis moving knob plunger 22. The Y-axis moving linear guide rail 19 is horizontally fixed on the mounting plate 18. The slider retraction limiting guide groove block 20 and the slider extension limiting guide groove block 21 are respectively fixed at both ends of the Y-axis moving linear guide rail 19. The Y-axis moving knob plunger 22 is threadedly connected to the slider of the Y-axis moving linear guide rail 19. A positioning hole is provided on the surface of the mounting plate 18.

[0048] Specifically, the block detection system is fixedly installed on the top of the fixture column 4, which steadily lifts the system to the required working height and aligns it with the workpiece. The Y-axis linear guide 19 is used to control the movement trajectory of the block detection system on the Y-axis (front and back direction), ensuring smooth and stable movement without shaking, and precise straightness. The slider retraction limit guide block 20 and the slider extension limit guide block 21 are used to limit the movement range of the slider of the Y-axis linear guide 19 in the Y direction. The slider retraction limit guide block 20 is used to prevent the operator from pulling the system too far. The slider extension limit guide block 21 is used to ensure that the position of the detection block 27 in the Y direction is precise and consistent each time it is pushed to this position for detection. The Y-axis movement knob plunger 22 is used to position the detection block 27 by rotating it into the positioning hole after it is pushed upward to the "detection position".

[0049] The X-axis moving mechanism includes an X-axis moving linear guide 24, an X-axis moving limiting guide block 23, and an X-axis moving knob plunger 25. The X-axis moving linear guide 24 is horizontally fixed on the slider of the Y-axis moving linear guide 19. The X-axis moving limiting guide block 23 is fixed on the slider of the Y-axis moving linear guide 19 and located on one side of the X-axis moving linear guide 24. The X-axis moving knob plunger 25 is threadedly connected to the slider of the X-axis moving linear guide 24. A positioning hole 2 is provided on the fixed guide rail of the X-axis moving linear guide 24 corresponding to the locking position of the X-axis moving knob plunger 25.

[0050] Specifically, the X-axis linear guide 24 is perpendicular to the Y-axis guide rail. The X-axis movement limiting guide block 23 is used to limit the movement range of the slider in the X-axis (left and right direction) of the X-axis linear guide 24, ensuring that the detection block 27 will not overtravel in the X-axis. The X-axis movement knob plunger 25 is used to push the detection block 27 to the "detection position" in the X-axis, and then rotate the X-axis movement knob plunger 25 to make it engage with the positioning hole two, thereby achieving precise positioning and locking in the X-axis.

[0051] The door tray detection system also includes a right-angle bracket 26 and a detection block 27. The right-angle bracket 26 is vertically fixed on the slider of the X-direction linear guide rail 24. The detection block 27 is fixedly installed on the top of the right-angle bracket 26, and the detection surface of the detection block 27 is adapted to the contact surface of the door tray rear clamping block.

[0052] Specifically, the detection block 27 is specially designed according to the specific characteristics of the workpiece being inspected. It is equipped with detection pins, gap gauges or dial indicators, etc., so that specific features on the door (such as lock holes, waistlines, etc.) can be inspected. The detection block 27 is fixed to the end of the two-dimensional moving platform formed by the Y-axis moving mechanism and the X-axis moving mechanism through the right-angle bracket 26. The two-dimensional moving platform is used to accurately bring the detection block 27 to the preset detection position.

[0053] A method for detecting a high-precision vehicle door tray gauge includes:

[0054] S1. Fixture installation and debugging: Weld the fixture fixed welding base 1 to the steel platform, adjust the height adjustment bolt 2 to calibrate the level, and install the hinge detection system and block detection system components to ensure smooth movement and accurate positioning.

[0055] S2. Pallet Positioning: Place the door pallet to be inspected stably on the operating platform, aligning it with the reference surface of the inspection tool;

[0056] S3, Hinge hole inspection: The operating handle 7 drives the rotating positioning plate 8 to be inserted into the positioning slot, so that the lower hinge detection pin 12 and the upper hinge detection pin 14 are aligned and inserted into the tray hinge hole to inspect the position accuracy and coaxiality.

[0057] S4. Rear clamping block detection: Adjust the Y-axis moving mechanism and the X-axis moving mechanism, lock the Y-axis moving knob plunger 22 and the X-axis moving knob plunger 25, and use the detection block 27 to fit the tray rear clamping block to detect the Y-axis dimension and fitting accuracy.

[0058] S5. Result processing: Qualified pallets are removed, and unqualified pallets are re-inspected after adjustment according to the deviation data.

[0059] This application enables rapid calibration and online deployment of door trays, reducing maintenance and adjustment time.

[0060] Working principle:

[0061] The fixture is fixedly welded to the steel platform to ensure a firm fit. The height adjustment connecting plate 3 is used to adjust the height of the entire system by adjusting bolts.

[0062] First, the door tray is inserted into the inspection fixture. The operator holds the operating handle 7 and, guided by the hinge inspection guide rail 10, rotates and lifts the entire inspection system from the non-working position until the rotating positioning plate 8 clicks into the rotating positioning slot 9. At this point, the upper and lower hinge inspection pins 12 are aligned with the upper and lower hinge mounting holes on the workpiece. The operator continues to apply force and tries to push the inspection pins into the holes. If they can be inserted smoothly to the bottom, the workpiece is qualified; otherwise, if any pin cannot be inserted, the workpiece is unqualified. If there is any deviation, the door tray hinge needs to be adjusted according to the corresponding deviation direction.

[0063] Then, the operator first holds the entire tray and pushes it from the "retracted position" to the "extended position" along the Y-guide rail until it is blocked by the Y-direction extension limit block. Then the tray is locked by the Y-direction knob plunger. Next, the operator moves the tray along the X-guide rail until it is blocked by the X-direction limit guide block and then locked by the X-direction knob plunger. At this point, the detection block 27 has accurately reached the theoretical detection position, and the operator can perform subsequent pin insertion or measurement operations. If there is a deviation, the door rear clamping block needs to be adjusted according to the corresponding deviation direction.

[0064] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined.

[0065] For the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-precision vehicle door tray inspection fixture, characterized in that, The high-precision door tray inspection tool includes: Inspection fixture fixed support arm system, hinge detection system, support block detection system and operating platform; The fixture fixing arm system is used to provide stable support for the entire fixture and to achieve height adjustment; The hinge detection system is used to detect the positional accuracy and coaxiality of the hinge holes in the door tray. The block detection system is used to detect the Y-axis dimension and fitting accuracy of the rear clamping block of the door tray.

2. The high-precision door tray inspection fixture according to claim 1, characterized in that, The fixture fixing support system includes several fixture fixing welding bases (1) set on both sides of the operating platform. The fixture fixing welding bases (1) are welded to the operating platform. Height adjusting bolts (2) are fixed at the four corners of the fixture fixing welding bases (1). The height adjusting bolts (2) pass through the height adjusting connecting plate (3). Nuts that are threadedly connected to the height adjusting bolts (2) are set on the upper and lower sides of the four corners of the height adjusting connecting plate (3). A fixture column (4) is fixed on the upper surface of the height adjusting connecting plate (3). A fixture lateral stabilizing tie rod (5) is fixed on the opposite side of two adjacent fixture columns (4).

3. The high-precision door tray inspection fixture according to claim 1, characterized in that, The hinge detection system includes a column mounting panel (6), a lower hinge detection component and an upper hinge detection component. The column mounting panel (6) is fixed on the top of the fixture fixing arm system. An arc-shaped hinge detection guide rail (10) is fixed on the surface of the column mounting panel (6). A rotating positioning plate (8) is slidably connected to the hinge detection guide rail (10). An operating handle (7) is fixed on the surface of the rotating positioning plate (8). A rotating positioning slot (9) is opened on the surface of the column mounting panel (6).

4. The high-precision door tray inspection fixture according to claim 3, characterized in that, The lower hinge detection assembly includes a lower hinge detection connecting plate (11) and a lower hinge detection pin (12). One end of the lower hinge detection connecting plate (11) is fixedly connected to the operating handle (7), and the lower hinge detection pin (12) is fixedly installed at the other end of the lower hinge detection connecting plate (11). The upper hinge detection assembly includes an upper hinge detection connecting plate (13) and an upper hinge detection pin (14). The upper hinge detection connecting plate (13) is connected to the rotary positioning plate (8) through a parallel linkage mechanism, and the upper hinge detection pin (14) is fixedly installed at one end of the upper hinge detection connecting plate (13).

5. The high-precision door tray inspection fixture according to claim 3, characterized in that, The surface of the column mounting panel (6) is also fixedly provided with a height positioning plate one (15) and a height positioning plate two (16). The height positioning plate one (15) and the height positioning plate two (16) are used to provide the reference positioning in the Z direction for the lower hinge detection pin (12) and the upper hinge detection pin (14), respectively.

6. The high-precision door tray inspection fixture according to claim 1, characterized in that, The block detection system includes a block detection system column (17), a mounting plate (18), a Y-axis moving mechanism, and an X-axis moving mechanism. The block detection system column (17) is fixed on the top of the fixture fixing arm system, and the mounting plate (18) is horizontally fixed on the top of the block detection system column (17).

7. The high-precision door tray inspection fixture according to claim 6, characterized in that, The Y-axis moving mechanism includes a Y-axis moving linear guide (19), a slider retraction limiting guide block (20), a slider extension limiting guide block (21), and a Y-axis moving knob plunger (22). The Y-axis moving linear guide (19) is horizontally fixed on the mounting plate (18). The slider retraction limiting guide block (20) and the slider extension limiting guide block (21) are respectively fixed at both ends of the Y-axis moving linear guide (19). The Y-axis moving knob plunger (22) is threadedly connected to the slider of the Y-axis moving linear guide (19). A positioning hole is provided on the surface of the mounting plate (18).

8. The high-precision door tray inspection fixture according to claim 6, characterized in that, The X-axis moving mechanism includes an X-axis moving linear guide (24), an X-axis moving limiting guide block (23), and an X-axis moving knob plunger (25). The X-axis moving linear guide (24) is horizontally fixed on the slider of the Y-axis moving linear guide (19). The X-axis moving limiting guide block (23) is fixed on the slider of the Y-axis moving linear guide (19) and located on one side of the X-axis moving linear guide (24). The X-axis moving knob plunger (25) is threadedly connected to the slider of the X-axis moving linear guide (24). A positioning hole is provided on the fixed guide rail of the X-axis moving linear guide (24) corresponding to the locking position of the X-axis moving knob plunger (25).

9. The high-precision door tray inspection fixture according to claim 6, characterized in that, The pallet detection system also includes a right-angle bracket (26) and a detection block (27). The right-angle bracket (26) is vertically fixed on the slider of the X-direction linear guide rail (24). The detection block (27) is fixedly installed on the top of the right-angle bracket (26). The detection surface of the detection block (27) is adapted to the contact surface of the door pallet rear clamp block.

10. A method for detecting a high-precision vehicle door tray gauge, characterized in that, The high-precision door tray inspection fixture according to any one of claims 1-9 comprises: S1. Inspection fixture installation and debugging: Weld the inspection fixture fixed welding base (1) to the steel platform, adjust the height adjustment bolt (2) to calibrate the level, install the hinge detection system and the block detection system components to ensure smooth movement and accurate positioning; S2. Pallet Positioning: Place the door pallet to be inspected stably on the operating platform, aligning it with the reference surface of the inspection tool; S3, Hinge hole inspection: The operating handle (7) drives the rotating positioning plate (8) to be inserted into the positioning slot (9), so that the lower hinge detection pin (12) and the upper hinge detection pin (14) are aligned and inserted into the tray hinge hole to inspect the position accuracy and coaxiality. S4. Rear clamp block detection: Adjust the Y-axis moving mechanism and the X-axis moving mechanism, lock the Y-axis moving knob plunger (22) and the X-axis moving knob plunger (25), and use the detection block (27) to fit the tray rear clamp block to detect the Y-axis dimension and fitting accuracy. S5. Result processing: Qualified pallets are removed, and unqualified pallets are re-inspected after adjustment according to the deviation data.

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