Device for detecting position of mounting seat hole on box body structure

Abstract

The invention provides a device for detecting the position of a mounting seat hole in a box structure, and the device comprises a pedestal which is disposed on a base platform and is provided with a step positioning hole used for fixing the lower end of a workpiece to be measured; the lower end of the supporting assembly is fixedly arranged on the base, the supporting assembly is located on one side of the step positioning hole, and the upper end of the supporting assembly is detachably connected with the upper end of the workpiece to be measured; the lower end of the measuring assembly is fixedly arranged on the base, the measuring assembly is located on the other side of the step positioning hole and arranged opposite to the supporting assembly, and the measuring assembly is provided with a measuring pin matched with the workpiece to be measured for positioning. Compared with the prior art, at least one technical scheme adopted by the invention at least has the beneficial effects that whether the positions of the mounting seat holes in the box body structure meet the drawing requirements or not can be quickly, conveniently, reliably and effectively detected, the method is suitable for batch production of products, and the production efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aviation engines, and in particular to a device for detecting the position of a mounting seat hole on a box structure. Background Art

[0002] Thin-walled sheet metal welding parts are distributed in different parts of aircraft engines. This box structure part belongs to the reverse thrust part of the engine. The material is titanium alloy with a thickness of 2mm. The specific structure is formed by welding the box sheet metal parts with flanges at both ends, and then riveting the mounting seat on the main body. Finally, the flange and mounting seat are machined by drilling, milling, etc. The hole diameter and position of the mounting seat directly affect the quality of the product and further affect the assembly of engine parts. The drawing requires the hole position accuracy of the mounting seat to be Currently, detection can be performed by using a table or three-coordinate measuring machine, but these two methods require sampling points one by one and fitting them before judgment, which is inefficient and time-consuming, and is not suitable for mass production. Because the part is a sheet metal welding structure with low rigidity and deformation characteristics, the detection results are prone to deviations. If the hole position is detected during the processing, it is extremely inconvenient and the waiting time is long.

[0003] In summary, in order to ensure that the position of the mounting seat hole can be quickly verified during the processing process and the final product to ensure that the processed product meets the quality requirements, based on the assembly relationship, characteristics and requirements, a fast, convenient, reliable and effective device must be developed to replace the machine tool table or three-coordinate detection methods. At the same time, it should also adapt to the mass production requirements of the product and improve the product processing efficiency. Summary of the Invention

[0004] In view of this, the present invention provides a device for detecting the position of a mounting seat hole on a box structure, so as to achieve the purpose of adapting to mass production of products and improving production efficiency.

[0005] The present invention provides the following technical solution: a device for detecting the position of a mounting seat hole on a box structure, comprising: a base, which is arranged on a base, and is provided with a step positioning hole for fixing the lower end of a workpiece to be measured; a support assembly, the lower end of which is fixedly arranged on the base, the support assembly is located on one side of the step positioning hole, and the upper end of the support assembly is detachably connected to the upper end of the workpiece to be measured; a measuring assembly, the lower end of which is fixedly arranged on the base, the measuring assembly is located on the other side of the step positioning hole and is arranged opposite to the support assembly, and the measuring assembly is provided with a measuring pin for cooperating with the workpiece to be measured for positioning.

[0006] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above-mentioned technical solutions adopted by the present invention include at least: the present invention can ensure fast, convenient, reliable and effective detection of whether the position of the mounting seat hole on the box structure meets the requirements of the drawing, and is suitable for mass production of products and can improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0008] Figure 1 is a side view of an embodiment of the present invention;

[0009] Figure 2 yes Figure 1 Schematic diagram of the structure in the middle A direction;

[0010] Figure 3 yes Figure 1 Schematic diagram of the structure in the middle B direction;

[0011] Figure 4 2 is a schematic structural diagram of a latch plate in an embodiment of the present invention.

[0012] Reference numerals in the figure: 1. base; 2. measuring pin; 3. workpiece to be measured; 4. latch; 5. latch plate; 6. limit plate; 7. first support; 8. ball pin; 9. second support; 11. locking screw; 12. pressure plate; 13. lifting ring. DETAILED DESCRIPTION

[0013] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0014] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0015] like Figures 1 to 4 As shown, an embodiment of the present invention provides a device for detecting the position of a mounting hole on a box structure, comprising:

[0016] A base 1 is provided on the base, and a step positioning hole is provided on the base 1 for fixing the lower end of the workpiece 3 to be measured;

[0017] The support assembly has a lower end fixedly mounted on the base 1, the support assembly is located on one side of the step positioning hole, and the upper end of the support assembly is detachably connected to the upper end of the workpiece 3 to be measured;

[0018] The measuring component is fixedly mounted on the base 1 at its lower end. The measuring component is located on the other side of the step positioning hole and is arranged opposite to the supporting component. The measuring component is provided with a measuring pin 2 for cooperating with the workpiece 3 to be measured for positioning.

[0019] The device for detecting the position of the mounting seat hole on the box structure of the present invention can be operated by one person, thereby reducing labor costs.

[0020] The base 1 for detecting the position of the seat hole installed on the box structure is the load-bearing component of the entire device. According to the rectangular structure of the workpiece 3 to be measured, the outer structure of the base 1 is designed to be rectangular, and rectangular and circular through holes (step positioning holes) are processed on the main body. The circular hole is a step hole. The material is structural steel with moderate thickness and weight, and the rigidity meets the use requirements.

[0021] The support assembly includes a first support 7 and a limit assembly. The first support 7 is fixed to the base 1; the limit assembly is arranged at the upper end of the first support 7 and can be detachably connected to the upper end of the workpiece 3 to be measured.

[0022] The first support 7 is a large support with a wedge-shaped frame structure. The vertical surface on one side is perpendicular to the base 1, and two inclined plates on the other side connect to the vertical surface and the bottom surface. The two inclined plates are appropriately spaced from the bottom edge. Made of cast steel, they have a moderate height and thickness. The wedge-shaped and frame-like design reduces weight while ensuring stability. The symmetrical frame structure also enhances its aesthetic appearance. Manufacturing can be performed using a single casting process, which is more cost-effective than using a monolithic blank.

[0023] The limit assembly includes a limit plate 6 and a latch plate 5. The limit plate 6 is mounted on the upper end of the first support 7 and is provided with a limit assembly mounting hole. The latch plate 5 is removably inserted into the limit assembly mounting hole and can slide relative to the limit plate 6 along the line connecting the support assembly and the measuring assembly. The end of the latch plate 5 is provided with a latch 4 that engages with the upper end of the workpiece 3 to be measured.

[0024] The limiting plate 6 is a rectangular parallelepiped structure, and its length and width are consistent with the upper end size of the first support 7. A through groove of moderate depth is processed at the center position to form a matching groove with the latch plate 5.

[0025] The limit plate 6 is mounted on the upper end of the first support 7, with its length and width aligned with those of the upper end. The centerline of the through-slot aligns with the centerlines of the base 1 and the workpiece 3 to be measured. The through-slot and latch plate 5 are fitted with a slip fit, ensuring a clearance that meets the accuracy requirements of the measurement. When mated with the first support 7, the positioning pins are used for precise positioning before the screws are connected, ensuring accurate measurement. The space created by the space between the two plates ensures smooth sliding of the latch plate 5.

[0026] The structure of the latch plate 5 is that a cylinder is processed at one end of the cuboid, and a through hole matching the latch 4 is processed on the surface of the other end of the cuboid. A bushing is provided in the through hole, and a threaded hole is processed at the end and intersected with the through hole. A rectangular U-shaped blind groove is processed on the upper surface, and knurling and a through hole are processed on the outer circle of the cylindrical end.

[0027] The latch plate 5 forms a precise, sliding fit with the through-slot in the stopper plate 6. The length of the U-shaped blind groove on the upper surface controls the distance of slippage. Once the slippage distance is determined, the latch plate 5 can be locked with a knurled screw on the pressure plate to prevent movement during operation. The latch pin 4 engages the bushing in the through-hole to position the workpiece 3 to be measured. The locking screw on the end of the pin pin 4 then secures it to prevent movement. The knurling on the cylindrical end increases resistance, facilitating manual operation.

[0028] The inner hole of the bushing has been treated to resist wear, which reduces the wear of the bushing during use and increases its service life. Even if it is worn, it is easy to replace without replacing the parts that match the bushing.

[0029] The measuring assembly includes a second support 9 and a locking screw 11. The second support 9 is fixed to the base 1. The side of the second support 9 facing the workpiece 3 to be measured is provided with multiple spaced measurement mounting holes. Each measurement mounting hole is provided with a measuring pin 2, with one end of each measuring pin 2 set in the measurement mounting hole and the other end of the measuring pin 2 cooperating with the workpiece 3 to be measured for positioning. A locking screw 11 is provided at each measuring pin 2.

[0030] There are two second supports 9 , which are arranged side by side at intervals on the other side of the step positioning hole and opposite to the support assembly. Each second support 9 is provided with a measuring pin 2 and a locking screw 11 .

[0031] The second support 9 is a small support structure with an L-shaped structure. One side is a vertical surface and the other side is a wedge-shaped surface. A small hole is processed on one side of the vertical surface. The material is made of cast steel. The two second supports 9 are symmetrically distributed on both sides of the base 1. There are 4 through holes on the main body that match the measuring pin 2. Bushings are provided in the through holes. The second support 9 and the first support 7 form a space for the workpiece 3 to be measured.

[0032] At the same time, the second support 9 is symmetrically distributed according to the positions of the mounting seat to be tested on both sides. The L-shaped structure with a wide bottom and a narrow top increases the stability of the device. The thickness of the vertical surface can ensure that the sliding distance of the measuring pin 2 in the hole meets the detection requirements of the workpiece; the inclination angle of the opposite surface of the workpiece 3 to be measured is consistent with the inclination angle of the mounting seat, and the inclination angle of the through holes that cooperate with the measuring pin 2 is consistent with the inclination angle of the corresponding mounting seat holes on the workpiece 3 to be measured. The threaded holes on the side can be used with the locking screws to lock the measuring pin 2 and can also be used as small holes for adding lubricating oil.

[0033] It should be noted that the measuring pin 2 and the plug pin 4 are both stepped pins, the matching section forms a sliding fit with the matching hole, the diameter of the insertion section is smaller than the diameter of the handle section, and the handle section is processed with knurling and a through hole.

[0034] The cylindrical mating sections of the measuring pin 2 and latch 4 are of moderate length, allowing for sufficient slippage within the mating holes. A flat surface on the outer diameter of the mating section, secured by a locking screw, prevents the latch from rotating and also prevents movement of the measuring pin 2 and latch 4. The outer diameter of the mating section has been treated for wear resistance, minimizing wear and increasing its service life. Knurling on the handle increases resistance and facilitates manual operation. Each latch 4 is engraved with the same serial number as the corresponding latch hole, ensuring unique identification and facilitating identification.

[0035] Preferably, a clamping assembly for clamping the workpiece 3 to be measured is provided on the base 1. The clamping assembly includes a clamping plate 12 and screws. One end of the clamping plate 12 is connected to the base 1 by the screws, and the other end of the clamping plate 12 abuts against the edge of the workpiece 3 to be measured.

[0036] The base 1 of the present embodiment is provided with a ball stud 8, which is positioned at the center of the base 1's width, with the non-ball end tightly fitted into the base 1. Ball stud 8 serves as the design and testing reference for the entire device. The working positions of various components within the device are interrelated to it, and the device is regularly inspected using this ball stud as a reference.

[0037] The three lifting rings 13 provided on the base 1 are spaced apart to equally divide the weight of the entire device, thus ensuring the balance of the device when hoisted and facilitating the hoisting and transportation of the device.

[0038] The method of use of the present invention is as follows:

[0039] When in use, loosen the locking screw 11, withdraw the measuring pin 2, the latch 4 and the latch plate 5, and release the installation space of the workpiece 3 to be measured; then place the end of the workpiece 3 to be measured with the stepped circle downward on the stepped hole of the base 1, slide the latch plate 5 at the other end to the appropriate position, and then insert the latch 4 into the hole at the center of the flange edge. At this time, keep the workpiece 3 to be measured in a vertical state, and then use the pressure plate 12 to press the flange edge at the lower end of the workpiece 3 to be measured, and finally insert the measuring pins 2 one by one. If the measuring pins 2 can be smoothly inserted into the small hole of the mounting seat on the workpiece 3 to be measured, the mounting seat hole position is qualified, otherwise it is unqualified.

[0040] After inspecting the first workpiece, remove the workpiece and repeat the above steps to inspect the mounting seat hole position of the next workpiece.

[0041] The present invention can ensure rapid, convenient, reliable and effective detection of whether the position of the mounting seat hole on the box structure meets the requirements of the drawing, is suitable for batch production of products, and can improve production efficiency.

[0042] The above description is merely a specific embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, substitutions of equivalent components, or equivalent changes and modifications made within the scope of patent protection, should still fall within the scope of this patent. Furthermore, the technical features of the present invention may be freely combined with one another, with other technical solutions, and with other technical solutions.

Claims

1. A device for detecting the position of a mounting hole on a box structure, characterized in that: include: A base (1) is arranged on a base, and a step positioning hole for fixing the lower end of a workpiece (3) to be measured is provided on the base (1); A support assembly, the lower end of which is fixedly arranged on the base (1), the support assembly is located on one side of the step positioning hole, and the upper end of the support assembly is detachably connected to the upper end of the workpiece (3) to be measured; A measuring assembly, the lower end of which is fixedly arranged on a base (1), is located on the other side of the step positioning hole and is arranged opposite to the support assembly. The measuring assembly is provided with a measuring pin (2) for cooperating with a workpiece (3) to be measured for positioning.

2. The device for detecting the position of the mounting hole on the box structure according to claim 1, characterized in that: The support assembly comprises: A first support (7) is fixed on the base (1); A limit assembly is provided at the upper end of the first support (7), and the limit assembly can be detachably connected to the upper end of the workpiece (3) to be measured.

3. The device for detecting the position of the mounting hole on the box structure according to claim 2, characterized in that: The limiting component includes: A limit plate (6) is arranged at the upper end of the first support (7), and a limit assembly mounting hole is provided on the limit plate (6); A latch plate (5) is detachably mounted on the mounting hole of the limit assembly, and the latch plate (5) can slide relative to the limit plate (6) along the direction of the line connecting the support assembly and the measuring assembly. A latch pin (4) is provided at the end of the latch plate (5) for positioning and matching with the upper end of the workpiece (3) to be measured.

4. The device for detecting the position of the mounting hole on the box structure according to claim 1, characterized in that: The measurement component includes: A second support (9) is fixed on the base (1), and a plurality of spaced measurement mounting holes are provided on a side of the second support (9) facing the workpiece (3) to be measured, each of the measurement mounting holes is provided with a measurement pin (2), and one end of each measurement pin (2) is arranged in the measurement mounting hole, and the other end of the measurement pin (2) cooperates with the workpiece (3) to be measured for positioning; A locking screw (11) is correspondingly provided at each measuring pin (2).

5. The device for detecting the position of the mounting hole on the box structure according to claim 4, characterized in that: There are two second supports (9), which are arranged side by side at intervals on the other side of the step positioning hole and opposite to the support assembly. Each second support (9) is provided with a measuring pin (2) and a locking screw (11).

6. The device for detecting the position of the mounting hole on the box structure according to claim 1, characterized in that: A pressing assembly for pressing a workpiece (3) to be measured is provided on the base (1).

7. The device for detecting the position of the mounting hole on the box structure according to claim 6, characterized in that: The clamping assembly comprises a pressing plate (12) and a screw, one end of the pressing plate (12) is connected to the base (1) via the screw, and the other end of the pressing plate (12) abuts against the edge of the workpiece (3) to be measured.

8. The device for detecting the position of the mounting hole on the box structure according to claim 1, characterized in that: A hanging ring (13) is provided on the seat (1).

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