Tool for rapidly measuring concave-convex amount of surface fastener of contact type aircraft

Abstract

The invention relates to the field of aircraft assembly and quality detection, in particular to a tool for rapidly measuring the concave-convex amount of a contact type aircraft surface fastener. Aiming at the problem that whether the concave-convex quantity of various and huge fasteners on the surface of an aircraft is qualified or not needs to be detected, the measuring tool provided by the invention utilizes the dial indicator to measure the contact point to be in contact with the measured surface, quickly and accurately reflects the shape change characteristics of the measured surface by measuring the displacement change of the contact point, and combines clamping plates of different specifications to measure the concave-convex quantity of the fastener. After compression and zero setting, the measuring tool can be suitable for detecting the sinking amount of fasteners of different specifications in multiple working condition scenes such as planes and curved surfaces. The tool for measuring the concave-convex amount of the fastener on the surface of the contact type machine body, which can be quickly combined and is suitable for various working condition scenes, is developed on the basis of the widely used dial indicators, and has the characteristics of simple structure, accurate measurement reading, convenience in operation and convenience in popularization and use.

Description

Technical Field

[0001] The present invention relates to the field of aircraft assembly and quality inspection, and specifically includes a rapid measurement tool for the concave-convex amount of fasteners on the surface of an aircraft in contact. Background Art

[0002] With the development of aviation technology, the surface quality of an aircraft has become one of the important indicators for measuring the performance of the aircraft, and the surface quality of the airframe directly affects the product characteristics. In addition to the fixed aircraft structural form, the concave-convex amount of the fasteners used on the aircraft surface is a key factor affecting the surface quality. Therefore, improving the detection quality of the concave-convex amount of the fasteners used to connect the airframe is one of the important links to ensure the surface quality of the product. At present, the number of fasteners used on the aircraft surface is large, the distribution area is wide, and the specification types are numerous, and there are different technical requirements for the depression amount of the fasteners. Under such conditions, the current detection quality and means of the concave-convex amount of the fasteners have shown the phenomenon of being overstretched, with low efficiency and difficulty in quickly and accurately covering the measurement requirements of fasteners of various specification sizes.

[0003] In view of the above problems, there is an urgent need to invent a measurement tool that can be quickly calibrated and stably measure the concave-convex amount of fasteners of various specifications. Summary of the Invention

[0004] The present application provides a rapid measurement tool for the concave-convex amount of fasteners on the surface of an aircraft in contact, which has strong adaptability and high versatility, and can quickly and stably read the numerical value of the concave-convex amount of fasteners on the surface of the aircraft.

[0005] The technical solution of the present invention is as follows:

[0006] According to one aspect of the present application, there is provided a rapid measurement tool for the concave-convex amount of fasteners on the surface of an aircraft in contact, characterized in that

[0007] It is composed of a clamping and adjusting assembly 1, a dial indicator 2, a clamping plate 3, a reading clip 4, a measurement contact point 5, and a zero-adjusting flat plate 6.

[0008] The clamping and adjusting assembly 1 is used to fix the dial indicator 2, and includes an upper envelope clip 1-1 and a lower envelope clip 1-2. After the dial indicator 2 is combined with the lower envelope clip 1-2, the envelope clip 1-1 and the lower envelope clip 1-2 are fixedly connected by bolts; the selected clamping plate 3 penetrates through the measurement contact point 5 below the dial indicator 2 and is fixedly connected to the lower envelope clip 1-2 by bolts; the reading clip 4 is fixedly connected to the upper envelope clip 1-1 by bolts. When it is necessary to take a reading from the measurement object, the upper end of the cylindrical rod of the dial indicator 2 is locked by a horizontal round-hole fastening bolt; the zero-adjusting flat plate 6 is used for zero-adjusting the dial indicator 2.

[0009] The dial indicator 2 has the function of zero-adjusting at any position, and the pointer of the dial indicator 2 rotates for reading through the linear movement of the cylindrical rod of the dial indicator 2.

[0010] The measurement contact point 5 is a columnar structure, including a connection end and a measurement end;

[0011] The measurement end is spherical or needle-shaped to ensure point contact with the surface fastener of the aircraft to be measured;

[0012] The connection end is provided with an internal thread and is connected and installed to the lower end of the cylindrical rod of the dial indicator 2 through the internal thread.

[0013] The clamping and adjusting assembly 1 can be combined and separated, and can stably clamp the dial indicator 2, including an upper envelope clamp 1-1 and a lower envelope clamp 1-2;

[0014] The upper envelope clamp 1-1 and the lower envelope clamp 1-2 are fixedly connected by bolts.

[0015] The clamping plate 3 includes a support end and a connection end;

[0016] A number of tooth-shaped protrusions are evenly distributed on the circumference of the support end, which fits with the surrounding structure of the surface fastener of the aircraft to be measured during measurement, for stable and rapid measurement tools;

[0017] A bolt hole is provided on the connection end, and is fixedly connected to the lower envelope clamp 1-2 in the clamping and adjusting assembly 1 by a bolt.

[0018] The reading clamp 4 is fixedly installed on the upper envelope clamp 1-1 of the clamping and adjusting assembly 1 by bolts;

[0019] The reading clamp 4 is provided with a round hole, and the upper end of the cylindrical rod of the dial indicator 2 can be inserted into the round hole of the reading clamp 4;

[0020] The reading clamp 4 is provided with a round hole fastening bolt. When it is necessary to remove the quick measurement tool from the aircraft surface for reading, the round hole fastening bolt of the reading clamp 4 can be tightened to clamp and fix the upper end of the cylindrical rod of the dial indicator 2 for stable reading.

[0021] The zero-adjusting flat plate 6 is a flat plate structure with high-precision surface quality.

[0022] The clamping plate 3 can be replaced with different diameter specifications according to the size of the surface fastener of the aircraft to be measured and the eccentricity degree of the detection position of the surface fastener of the aircraft to be measured.

[0023] The usage method of the above-mentioned quick measurement tool for the concave-convex amount of the contact fastener on the aircraft surface uses an adjustable zero-point dial indicator, and assembles and combines the dial indicator with the clamping and adjusting assembly; according to the aperture type of the fastener to be measured and the measurement position, select different specifications of the clamping plates, and the selected clamping plates are required to meet the need for measuring the concave-convex amount at any position on the surface of the fastener to be measured; after selecting the clamping plate, lock the clamping plate with the lower envelope clamp of the clamping and adjusting assembly through bolts. When the clamping plate is in contact with the zero-adjusting flat plate, the measurement contact point is in point contact with the zero-adjusting flat plate, thereby driving the movement of the cylinder of the dial indicator and keeping the cylinder of the dial indicator in a certain compressed state. At this time, zero-adjust the dial indicator on the zero-adjusting flat plate; during actual measurement, the bottom surface of the clamping plate is attached to the edge of the hole on the surface of the airframe, and the measurement tool works through the vertical expansion and contraction of the measurement contact point. After stable measurement, the reading can be directly taken, or the reading can be recorded after locking with the reading clamp and removing it from the aircraft surface.

[0024] The specific steps are as follows:

[0025] Step 1: Combine the measurement tools;

[0026] Select a dial indicator with a measuring range of (0-10 mm) and an accuracy of 0.01 mm as the measuring instrument, which has the ability to zero-adjust at any position. Combine the dial indicator with the clamping and adjusting assembly.

[0027] Step 2: Select the measuring clamping plate;

[0028] Classify and grade various standard parts on the aircraft surface according to the installation area, the curvature of the assembly surface, their own structural characteristics and dimensions. Select the corresponding clamping plate before measurement and install and lock it.

[0029] Step 3: Zero-adjust the measurement tool;

[0030] After selecting and installing the clamping plate, make the lower plane of the clamping plate fit with the special zero-adjusting flat plate, so that the probe of the dial indicator is in a certain compressed state. After stabilization, zero-adjust the dial indicator on the special reference plane.

[0031] Step 4: Actual measurement;

[0032] During operation, the bottom surface of the tool clamping plate is attached to the edge of the hole on the surface of the airframe, and the measurement tool works through the vertical expansion and contraction of the measurement contact point. After stable measurement, the reading can be directly taken, or the reading can be recorded after locking with the locking mechanism and removing it from the aircraft surface.

[0033] The beneficial effects of the present invention:

[0034] For the problem that there are a large number of fasteners of various types on the aircraft surface and it is necessary to detect whether the concave-convex amount is qualified, the measuring tool proposed by the present invention uses a dial indicator to measure the contact point in contact with the measured surface. By measuring the change in the displacement amount of the contact point, it can quickly and accurately reflect the shape change of the measured surface. Combined with different specifications of clamping plates, after compression and zero adjustment, the measuring tool can be applied to the detection of the depression amount of fasteners of different specifications in multi-condition scenarios such as flat and curved surfaces.

[0035] Based on the widely used dial indicator, the present invention develops a contact-type measuring tool for the concave-convex amount of fasteners on the surface of the fuselage that can be quickly assembled and is applicable to a variety of working conditions. It is characterized by simple structure, accurate measurement reading, convenient operation, and easy to promote and use. Brief Description of the Drawings

[0036] Figure 1 It is an isometric view of the measuring tool;

[0037] Figure 2 It is a schematic diagram of the clamping adjustment component and the reading clamp;

[0038] Figure 3 It is a schematic diagram of the free state of the measuring contact point after the measuring tool is zero-adjusted.

[0039] Among them, 1 is the clamping adjustment component; 2 is the dial indicator; 3 is the clamping plate; 4 is the reading clamp; 5 is the measuring contact point; 6 is the zero-adjustment flat plate; 1-1 is the upper envelope clamp; 1-2 is the lower envelope clamp. Detailed Description of the Specific Embodiment

[0040] The following describes the present application in detail with reference to the embodiments, but the present application is not limited to these embodiments.

[0041] Embodiment 1

[0042] Step 1: Installation of the reading clamp;

[0043] First, fixedly connect the reading clamp 4 and the upper envelope clamp 1-1 with bolts, so that the horizontal bolt on the reading clamp 4 remains loose or is removed from the reading clamp 4.

[0044] Step 2: Combination of the measuring part;

[0045] Select a dial indicator 2 with the ability to zero-adjust at any position, a measuring range of (0-10 mm), and an accuracy of 0.01 mm. After the dial indicator 2 is fixedly contacted with the lower envelope clamp 1-2, the upper envelope clamp 1-1 is sleeved from above the dial indicator 2 and then fixedly connected with the lower envelope clamp 1-2 through bolts.

[0046] Step 3: Selection and matching of the measuring clamping plate;

[0047] After selecting the clamping plate 3 according to the usage requirements, insert the clamping plate 3 from below the lower envelope clamp 1-2 and install and lock it.

[0048] Step 4: Zero adjustment of the measuring tool;

[0049] After selecting the mounting card board, fit the lower plane of the card board to the special zero-adjustment flat plate, keep the dial indicator probe in a certain compressed state, and after stabilization, zero-lock the dial indicator on the special reference plane.

[0050] Step 5: Actual measurement;

[0051] During operation, the bottom surface of the tool card board is attached to the edge of the hole on the surface of the machine body, and the measuring tool works by measuring the vertical expansion and contraction of the contact point. After stable measurement, the reading can be directly taken, or the reading can be recorded after locking through the locking mechanism and removing it from the surface of the aircraft.

[0052] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can make several deformations or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A rapid measurement tool for the concavity and convexity of contact-type aircraft surface fasteners, characterized in that it is composed of a clamping and adjusting component (1), a dial indicator (2), a clamping plate (3), a reading clamp (4), a measurement contact point (5), and a zero-adjusting flat plate (6); The clamping and adjusting component (1) is used to fix the dial indicator (2), and includes an upper envelope clamp (1-1) and a lower envelope clamp (1-2). After the dial indicator (2) is combined with the lower envelope clamp (1-2), the envelope clamp (1-1) and the lower envelope clamp (1-2) are fixedly connected by bolts; the selected clamping plate (3) penetrates through the measurement contact point (5) below the dial indicator (2) and is fixedly connected to the lower envelope clamp (1-2) by bolts; the reading clamp (4) is fixedly connected to the upper envelope clamp (1-1) by bolts. When it is necessary to take the reading from the measured part, the upper end of the cylindrical rod of the dial indicator (2) is locked by a horizontal round hole fastening bolt; the zero-adjusting flat plate (6) is used for zero-adjusting the dial indicator (2).

2. The rapid measurement tool for the concavity and convexity of contact-type aircraft surface fasteners according to claim 1, characterized in that the dial indicator (2) has the function of zero-adjusting at any position, and the pointer of the dial indicator (2) rotates for reading through the linear movement of the cylindrical rod of the dial indicator (2).

3. The rapid measurement tool for the concavity and convexity of contact-type aircraft surface fasteners according to claim 1, characterized in that the measurement contact point (5) is a columnar structure, including a connecting end and a measuring end; the measuring end is spherical or needle-shaped to ensure point contact with the aircraft surface fastener to be measured; the connecting end is provided with internal threads and is connected and installed to the lower end of the cylindrical rod of the dial indicator (2) through the internal threads.

4. The rapid measurement tool for the concavity and convexity of contact-type aircraft surface fasteners according to claim 1, characterized in that the clamping and adjusting component (1) can be combined and separated, and can stably clamp the dial indicator (2), including the upper envelope clamp (1-1) and the lower envelope clamp (1-2); the upper envelope clamp (1-1) and the lower envelope clamp (1-2) are fixedly connected by bolts.

5. The rapid measurement tool for the concavity and convexity of contact-type aircraft surface fasteners according to claim 1, characterized in that the clamping plate (3) includes a supporting end and a connecting end; a number of tooth-shaped protrusions are evenly distributed on the circumference of the supporting end, and are fitted with the surrounding structure of the aircraft surface fastener to be measured during measurement to stabilize the rapid measurement tool; bolt holes are provided on the connecting end and are fixedly connected to the lower envelope clamp (1-2) in the clamping and adjusting component (1) by bolts.

6. The rapid measurement tool for the concavity and convexity of contact-type aircraft surface fasteners according to claim 1, characterized in that the reading clamp (4) is fixedly installed on the upper envelope clamp (1-1) of the clamping and adjusting component (1) by bolts; the reading clamp (4) is provided with a round hole, and the upper end of the cylindrical rod of the dial indicator (2) can be inserted into the round hole of the reading clamp (4); The reading clamp (4) is provided with a round hole fastening bolt. When it is necessary to remove the quick measurement tool from the surface of the aircraft for reading, the round hole fastening bolt of the reading clamp (4) can be tightened, so as to clamp and fix the upper end of the cylindrical rod of the dial indicator (2) to obtain a stable reading.

7. The quick measurement tool for the concave-convex amount of the contact type aircraft surface fastener according to claim 1, characterized in that The zero-adjusting flat plate (6) is a flat plate structure with high-precision surface quality.

8. The quick measurement tool for the concave-convex amount of the contact type aircraft surface fastener according to claim 1, characterized in that The clamping plate (3) can be replaced with different diameter specifications according to the size of the aircraft surface fastener to be measured and the eccentricity degree of the detection position of the aircraft surface fastener to be measured.

Images