Complex profile composite material shell critical dimension inspection device

Abstract

The invention relates to a critical dimension inspection device for a complex profile composite shell, and belongs to the field of unmanned aerial vehicle detection. Comprising a mounting bottom plate (1), a fixed seat (2), a workpiece mounting seat (4), a workpiece main hole site detection plate (5), a detection head (6), a detection head transverse movement base (7), a measuring rod (8), a detection head vertical movement base (9), a digital display displacement ruler (10), a displacement ruler zero clearing reference block (11) and a transverse dimension measuring scale (14). The device has the advantages of being simple and reasonable in design, free of electric appliance and software control, free of high-speed moving parts, short in detection time, reliable in detection, good in long-term stability and the like, and the design method and the detection principle can be applied to design of various similar composite material workpiece critical dimension detection devices.

Description

Technical Field

[0001] The invention belongs to the field of unmanned aerial vehicle detection, and in particular relates to a key dimension inspection device for a complex-surface composite material shell. Background Art

[0002] At present, drones play an increasingly important role in the civil and military fields. In order to meet the diversification of drone applications, the wings of many small drones are folded, which can be loaded into delivery tools, such as large-diameter artillery shells or mounted under the wings of manned aircraft for rapid long-distance delivery. After the drone arrives at the target area with the delivery tool, it unfolds its wings and enters flight operations. In order to meet the requirements of wing folding, the tail cabin of some drones is designed with a rear wing folding and unfolding mechanism, a vertical tail wing mounting mechanism, and multiple mounting features on the tail cabin. At the same time, in order to reduce wind resistance and improve flight performance, the tail cabin generally adopts a shrinking irregular curved surface shape. In order to ensure the accuracy of various hole positions, inspection is a very important link. The previous inspection method was to use measuring tools to inspect the items to be inspected one by one. However, composite shell parts with complex shapes often have problems such as easy deformation, some measurement benchmarks do not exist or cannot be accurately positioned, which brings huge challenges to traditional inspection methods. The inspection pass rate has been low for a long time and cannot meet the needs of practical applications.

[0003] The inspection device of the present invention can maintain the correct shape of the workpiece, and with the determination of various measurement benchmarks, the use of measuring instruments and auxiliary inspection tools, the items to be inspected can be quickly, accurately and comprehensively inspected. With the continuous increase in product output, it plays an important role in the inspection of structural parts. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The technical problem to be solved by the present invention is how to provide a key dimension inspection device for a complex-surface composite material shell to solve the problem of low inspection pass rate of traditional inspection devices.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the present invention proposes a key dimension inspection device for a complex profile composite material shell, comprising: a mounting base 1, a fixing seat 2, a workpiece mounting seat 4, a workpiece main hole position detection plate 5, a detection head 6, a detection head lateral movement base 7, a measuring rod 8, a detection head vertical movement base 9, a digital displacement ruler 10, a displacement ruler zeroing reference block 11, and a lateral dimension measurement ruler 14;

[0008] The mounting base plate 1 is arranged at the bottom, and a fixing seat 2 is arranged at the upper left end of the mounting base plate 1, and a workpiece mounting seat 4 is fixed on the fixing seat 2, and the relative position of the workpiece 12 to be detected is fixed by the workpiece mounting seat 4, and a workpiece main hole position detection plate 5 is arranged on the workpiece mounting seat 4, and the end of the workpiece main hole position detection plate 5 is placed inside the workpiece 12 to be detected;

[0009] A detection head lateral movement base 7 is provided at the upper right end of the mounting base plate 1, a detection head vertical movement base 9 is provided on the detection head lateral movement base 7, a digital displacement ruler 10 is provided on the detection head vertical movement base 9, a detection head 6 is provided at the left end of the detection head vertical movement base 9, and a measuring rod 8 is provided at the right end of the detection head vertical movement base 9;

[0010] A transverse dimension measuring scale 14 is provided below the transverse moving base 7 of the detection head.

[0011] The measuring rod 8 is placed against a workpiece 12 to be inspected, and the distance between the main planes on the workpiece is inspected.

[0012] The workpiece main hole position detection plate 5 is processed with various holes on the main parts installation plane of the workpiece, and the positions of these holes can be quickly detected by visual inspection.

[0013] The detection head 6 is moved in the vertical direction by the detection head vertical moving base 9, and is moved in the horizontal direction by the detection head horizontal moving base 7, so as to detect the inner diameter, parallelism and vertical height of key holes on the workpiece.

[0014] The mounting base plate 1 is also provided with a component mounting position detection member 13, which is fixed on the mechanism mounting surfaces on both sides of the rear end of the workpiece to detect the center height and symmetry of the mechanism mounting planes on the left and right sides of the rear end of the workpiece relative to the center axis of the workpiece.

[0015] The workpiece mounting seat 4 is fixed on the fixing seat 2 via two radial sealing bearings, and the two bearings are spaced a certain distance apart to prevent the workpiece from rotating and jumping in the radial direction.

[0016] The measuring rod 8 has precise scales engraved on its smooth axis and has been calibrated for distance detection of the main planes of the workpiece.

[0017] The digital displacement ruler 10 is used to detect the lateral and height parameters of various features on the workpiece after being reset at a fixed point.

[0018] A workpiece leveling mechanism 3 is also provided on the top of the fixing seat 4. The workpiece leveling mechanism 3 cooperates with the inclination sensor to adjust the horizontal reference plane of the workpiece to be parallel to the installation base plate 1 of the tooling.

[0019] (III) Beneficial effects

[0020] The inspection device of the present invention has the characteristics of simple and reasonable design, no electrical appliances and software control, no high-speed moving parts, short inspection time, reliable inspection and good long-term stability. Its design method and inspection principle can be applied to the design of key dimension inspection devices for various similar composite workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the detection device of the present invention;

[0022] Figure 2 This is a front view of the detection device of the present invention;

[0023] Figure 3 Install the base plate for various mechanisms of the device;

[0024] Figure 4 A mounting base for a workpiece;

[0025] Figure 5 Install surface position detection plates for the main parts of the workpiece;

[0026] Figure 6 It is a fixed base for the detection rod and the digital displacement ruler display measurement unit;

[0027] Figure 7 Mobile base for the back-end measurement unit;

[0028] Figure 8 For the detection head;

[0029] Fig. 9 A detection rod with scale;

[0030] Fig.10 It is the tooling for testing the installation position of the vertical tail mechanism. DETAILED DESCRIPTION

[0031] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples.

[0032] The present embodiment is a key dimension inspection device for a complex profile composite material shell, comprising: a mounting base 1, a fixing seat 2, a workpiece mounting seat 4, a workpiece main hole position detection plate 5, a detection head 6, a detection head lateral movement base 7, a measuring rod 8, a detection head vertical movement base 9, a digital displacement ruler 10, a displacement ruler zeroing reference block 11, and a lateral dimension measurement ruler 14;

[0033] The mounting base plate 1 is arranged at the bottom, and a fixing seat 2 is arranged at the upper left end of the mounting base plate 1, and a workpiece mounting seat 4 is fixed on the fixing seat 2, and the relative position of the workpiece 12 to be detected is fixed by the workpiece mounting seat 4, and a workpiece main hole position detection plate 5 is arranged on the workpiece mounting seat 4, and the end of the workpiece main hole position detection plate 5 is placed inside the workpiece 12 to be detected;

[0034] A detection head lateral movement base 7 is provided at the upper right end of the mounting base plate 1, a detection head vertical movement base 9 is provided on the detection head lateral movement base 7, a digital displacement ruler 10 is provided on the detection head vertical movement base 9, a detection head 6 is provided at the left end of the detection head vertical movement base 9, and a measuring rod 8 is provided at the right end of the detection head vertical movement base 9;

[0035] A transverse dimension measuring scale 14 is provided below the transverse moving base 7 of the detection head.

[0036] The measuring rod 8 is placed against a workpiece 12 to be inspected, and the distance between the main planes on the workpiece is inspected.

[0037] The workpiece main hole position detection plate 5 is processed with various holes on the main parts installation plane of the workpiece, and the positions of these holes can be quickly detected by visual inspection.

[0038] The detection head 6 is moved in the vertical direction by the detection head vertical moving base 9, and is moved in the horizontal direction by the detection head horizontal moving base 7, so as to detect the inner diameter, parallelism and vertical height of key holes on the workpiece.

[0039] The mounting base plate 1 is also provided with a component mounting position detection member 13, which is fixed on the mechanism mounting surfaces on both sides of the rear end of the workpiece to detect the center height and symmetry of the mechanism mounting planes on the left and right sides of the rear end of the workpiece relative to the center axis of the workpiece.

[0040] The workpiece mounting seat 4 is fixed on the fixing seat 2 via two radial sealing bearings, and the two bearings are spaced a certain distance apart to prevent the workpiece from rotating and jumping in the radial direction.

[0041] The measuring rod 8 has precise scales engraved on its smooth axis and has been calibrated for distance detection of the main planes of the workpiece.

[0042] The digital displacement ruler 10 is used to detect the lateral and height parameters of various features on the workpiece after being reset at a fixed point.

[0043] A workpiece leveling mechanism 3 is also provided on the top of the fixing seat 4. The workpiece leveling mechanism 3 cooperates with the inclination sensor to adjust the horizontal reference plane of the workpiece to be parallel to the installation base plate 1 of the tooling.

[0044] First, according to the accuracy requirements of all items to be inspected, select the measuring instruments that meet the needs, and design the fixing mechanism according to the type of measuring tool. The design should consider the convenience of installation and disassembly to facilitate the regular disassembly and inspection of the measuring tool. Then, according to the characteristics of the workpiece, the installation tooling should be designed. Generally, the connection inspection features of the front and rear of the workpiece and other compartments should be designed on the tooling. The measurement benchmark should also be designed on the tooling for relative measurement of the size. Finally, according to the design of the features to be inspected on the workpiece and the inspection parts that are in direct contact with the workpiece, the movement method of the part should be designed. The design principles of the inspection parts should generally be able to meet the inspection of the main key features of the workpiece.

[0045] The length of the workpiece to be inspected in the present invention is 260mm, the outer diameter is 200mm, and the inner diameter of the cylindrical section is 196mm. The top of the workpiece is open, and a main parts mounting plate is bonded inside, on which a plurality of parts mounting holes and other features are processed. Battery mounting holes are processed on the shell of the cylindrical section of the workpiece, and there are mounting planes for the vertical tail mechanism on both sides of the rear end. There is a parts mounting hole for connecting the drone and other devices in the center of the rear end. There are ring-shaped mounting holes at the front end of the workpiece that are connected to the preceding cabin section. The required error for the position accuracy of various features is 0.1mm to 1mm, and the angle error is 0.2°.

[0046] According to the characteristics of the workpiece, the specific design is as follows:

[0047] 1. First, select measuring tools according to the accuracy requirements. For linear dimension measurement, a digital displacement ruler 10 with an accuracy of 0.02mm and a horizontal dimension measuring ruler 14 with an accuracy of 1mm are selected. A measuring rod 8 with an accuracy of 1mm is designed and processed. For angle measurement, a visual inspection tooling is selected and designed;

[0048] 2. Designed visual inspection tooling for various holes on the mounting surfaces of main parts on the workpiece;

[0049] 3. Two movable measuring bases are designed, among which the vertical movable base 9 of the detection head is equipped with a high-precision linear bearing and a measuring rod 8 with a scale inside. The base is connected to the mobile display unit of the digital displacement ruler and then installed together with the horizontal movable base 7 of the detection head. One side of the horizontal movable base 7 of the detection head is designed as a detection reference for the symmetry of the mounting surface of the vertical tail mechanism on both sides of the rear end of the workpiece relative to the central axis of the workpiece, and the symmetry is detected by cooperating with the horizontal dimension measuring scale 14;

[0050] 4. A workpiece leveling mechanism 3 is designed, which, in conjunction with a high-precision inclination sensor, can adjust the horizontal reference plane of the workpiece to be parallel to the installation base plate 1 of the tooling to ensure the accuracy of the center height measurement of the installation holes of key parts at the rear end of the workpiece and the installation positions of the vertical tail mechanisms on both sides;

[0051] 5. Designed a key hole detection head 6 at the rear end of the workpiece, designed the diameter according to the size of the hole to be inspected, and designed the shape of the detection tooling for the vertical tail mechanism installation position with a close-fitting feature;

[0052] 6. A component installation position detection part 13 is designed, which cooperates with a digital displacement ruler 10, a measuring rod with scale 8, a lateral dimension measuring ruler 14 and a displacement ruler zeroing reference block 11 to measure the distance between the two planes, the center height, the distance between the center and the front end face of the workpiece, and the symmetry of the two side planes relative to the center axis of the workpiece.

[0053] Take the inner diameter and height inspection of the part installation hole at the rear end of the tail cabin as an example. First, move the inspection rod to the zero point and zero it on the zero block. Then move the inspection rod to the hole to be inspected and insert the inspection head into the hole. The maximum height and minimum height can be obtained by vertical micro-movement of the inspection rod. The difference between the two can reflect whether the inner diameter of the hole is qualified, and the average value of the two is the height of the center line of the hole.

[0054] Taking the measurement of the tail cabin length as an example, move the detection rod, place the front end face of the detection head against the detection end face, read the reading of the detection rod scale, and the distance between the front end face of the detection head and the reference surface of the tail cabin mounting seat minus this value when the detection rod scale reading is zero is the length to be detected.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A device for inspecting key dimensions of a complex-surface composite material shell, characterized in that: It comprises: a mounting base (1), a fixing base (2), a workpiece mounting base (4), a workpiece main hole position detection plate (5), a detection head (6), a detection head lateral movement base (7), a measuring rod (8), a detection head vertical movement base (9), a digital displacement ruler (10), a displacement ruler zeroing reference block (11), and a lateral dimension measurement ruler (14); The mounting base plate (1) is arranged at the bottom, and a fixing seat (2) is arranged at the upper left end of the mounting base plate (1). A workpiece mounting seat (4) is fixed on the fixing seat (2), and the relative position of the workpiece (12) to be detected is fixed by the workpiece mounting seat (4). A workpiece main hole position detection plate (5) is arranged on the workpiece mounting seat (4), and the end of the workpiece main hole position detection plate (5) is placed inside the workpiece (12) to be detected; A detection head transverse movement base (7) is provided at the upper right end of the mounting base plate (1), a detection head vertical movement base (9) is provided on the detection head transverse movement base (7), a digital displacement ruler (10) is provided on the detection head vertical movement base (9), a detection head (6) is provided at the left end of the detection head vertical movement base (9), and a measuring rod (8) is provided at the right end of the detection head vertical movement base (9); A transverse dimension measuring scale (14) is provided below the transverse moving base (7) of the detection head.

2. The key dimension inspection device for complex profile composite material shell according to claim 1, characterized in that: The measuring rod (8) is placed against a workpiece (12) to be inspected to detect the distance between the main planes on the workpiece.

3. The key dimension inspection device for complex profile composite material shell according to claim 1, characterized in that: The workpiece main hole position detection plate (5) is processed with various holes on the main parts installation plane of the workpiece, and the positions of these holes can be quickly detected by visual inspection.

4. The critical dimension inspection device for complex profile composite material shell according to claim 1, characterized in that: The detection head (6) is driven by a detection head vertical moving base (9) to move in the vertical direction, and is driven by a detection head horizontal moving base (7) to move in the horizontal direction, so as to detect the inner diameter, parallelism and vertical height of key holes on the workpiece.

5. The critical dimension inspection device for complex-surface composite material shell according to claim 1, characterized in that: The mounting base plate (1) is also provided with a component mounting position detection member (13), which is fixed to the mechanism mounting surfaces on both sides of the rear end of the workpiece to detect the center height and symmetry of the mechanism mounting planes on the left and right sides of the rear end of the workpiece relative to the center axis of the workpiece.

6. The critical dimension inspection device for complex profile composite material shell according to claim 1, characterized in that: The workpiece mounting seat (4) is fixed on the fixing seat (2) via two radial sealing bearings, and the two bearings are spaced a certain distance apart to prevent the workpiece from rotating and jumping in the radial direction.

7. The critical dimension inspection device for complex-surface composite material shell according to claim 1, characterized in that: The measuring rod (8) has a precise scale engraved on its smooth axis and has been calibrated for use in distance detection of the main planes of a workpiece.

8. The critical dimension inspection device for complex-surface composite material shell according to claim 1, characterized in that: The digital displacement ruler (10) is used for detecting lateral and height parameters of various features on a workpiece after being reset to zero at a fixed point.

9. The critical dimension inspection device for complex-surface composite material shell according to claim 1, characterized in that: A workpiece leveling mechanism (3) is also provided on the top of the fixing seat (4), and the workpiece leveling mechanism (3) cooperates with the inclination sensor to adjust the horizontal reference plane of the workpiece to be parallel to the installation base plate (1) of the tooling.

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