Go-no go gauge for detecting installation distance of fork ear piece and detection method

Abstract

The invention discloses a fork ear piece installation spacing detection go-no go gauge and a detection method. The detection method comprises the following steps: S1, determining a space spacing size required to be measured by a detected fork ear piece; s2, the size range of the go-end measuring head and the size range of the no-go-end measuring head are designed according to the size obtained in the S1, and the go-end measuring head is measured. And S3, checking the sizes of the go-end measuring head and the no-go-end measuring head. And S4, assembling and connecting the go-end measuring head, the no-go-end measuring head and the handle. And S5, after the bushing is installed on the fork ear piece, the go-end measuring head and the no-go-end measuring head are used to respectively surround the end face of the bushing for one circle to carry out gap inspection. And S6, obtaining a conclusion after inspection, and judging whether the bushing mounting gap of the fork ear piece is qualified or not. The design of the method accords with ergonomics and is convenient for an operator to hold and use; and the design of the gap inspection pin part considers the contact mode and force with the bushing, so that the bushing is prevented from being damaged in the inspection process.

Description

Technical Field

[0001] The invention belongs to the technical field of size detection, and in particular relates to a go / no-go gauge and a detection method for detecting the installation spacing of a fork ear piece. Background Art

[0002] In aviation manufacturing technology, joint parts are an important connecting structure on the aircraft door frame. The fork ear part is connected to the aircraft door joint by bolts to fix the aircraft door. The spatial spacing of the fork ear is the key dimension for matching with the aircraft door joint, and the aircraft door is installed at the rear of the aircraft assembly. Once it cannot be assembled, the impact is huge and the cost of rework is high. Therefore, it is necessary to ensure that the fork ear spatial spacing is qualified during the parts production process. At present, the traditional caliper and inside diameter micrometer detection method is generally used. However, when using calipers for measurement, it is easy to scratch the end face coating of the bushing. The rework cost of scratched coating is high, and special process qualifications approved by customers are required. At the same time, the caliper is easy to tilt, the measurement result is inaccurate, and the inside diameter micrometer is used, and the detection time is long and the detection efficiency is low. Summary of the invention

[0003] The purpose of the present invention is to provide a method to solve the problems raised in the above background technology.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A fork ear installation spacing detection through-and-no-stop gauge comprises a through-end measuring head and a stop-end measuring head, both of which are short rod-shaped, with one end being a plane and the other end being a hemispherical surface. One end is a plane, resting on a bushing boss at one end, and the other end is a hemispherical surface, one side of the hemispherical surface is used to contact the surface of the bushing, this design can effectively prevent the bushing end face from being scratched, so that the coating of the bushing end face can be kept intact, thereby improving the quality of the product.

[0005] The length of the through-end measuring head is equal to the standard size to be measured, and the length of the stop-end measuring head exceeds the maximum deviation size of the measured size. The through-end measuring head is of standard size, and during measurement, the through-end measuring head can directly pass through the spacing, while the size of the stop-end measuring head is larger than the maximum deviation size and cannot pass through the spacing. The two measuring heads are used as two rulers to check the spacing size of the fork ear pieces.

[0006] It also includes a handle, the two ends of which are respectively connected to the through-end measuring head and the stop-end measuring head, and the three together form an I-shaped structure, and the handle is connected to the through-end measuring head and the stop-end measuring head through a threaded connection. The spacing detection through-and-stop gauge is an integrated through-and-stop assembly type, and the through-end measuring head and the stop-end measuring head can be easily disassembled, which is convenient for later maintenance and replacement.

[0007] Furthermore, the material of the through-end measuring head and the stop-end measuring head is nylon-high carbon high chromium cold working die steel, which can increase the service life of the go and stop gauges and effectively avoid bushing damage during use.

[0008] A method for detecting the installation spacing of fork ears, the method comprising the following steps: S1: Determine the space spacing required to measure the fork ears to be measured.

[0009] S2: Designing the size range of the through-end measuring head and the stop-end measuring head according to the size obtained in S1, and manufacturing the through-end measuring head and the stop-end measuring head.

[0010] S3: Checking the dimensions of the through-end measuring head and the stop-end measuring head.

[0011] S4: Assemble and connect the through-end measuring head, the stop-end measuring head and the handle.

[0012] S5: After the bushing is installed on the fork ear, the through-end measuring head and the stop-end measuring head are used to respectively go around the end surface of the bushing for a circle to perform a clearance inspection.

[0013] S6: After the inspection, a conclusion is drawn to determine whether the bushing installation clearance of the fork ear is qualified.

[0014] This detection method can effectively and quickly perform non-contact inspection on the spacing of the bushing. Compared with the traditional manual contact measurement method using calipers and outside micrometers, it can greatly improve the accuracy of the measurement results and avoid measurement errors and contact scratches on the bushing end face caused by factors such as the operator's technical level and operating habits.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The fork ear spacing of joint parts is the spacing between the bushing ends, which has the characteristics of coating and space spacing. By adopting a combination of spherical and flat measuring heads, non-contact, fast and accurate detection of the spacing can be achieved.

[0016] 2. Improve measurement accuracy: The go / no-go gauge can effectively check the clearance of the bushing. Compared with the traditional manual measurement method, it can greatly improve the accuracy of the measurement result. It can comprehensively check the entire bushing, not just a certain part, which can further improve the accuracy and reliability of the test result.

[0017] 3. Improve production efficiency: The go / no-go gauge can quickly and accurately check the clearance of the bushing, thereby improving production efficiency, meeting the needs of mass production, and avoiding errors caused by factors such as the operator's technical level and operating habits. At the same time, the present invention has a simple structure, low cost, and simple calibration, so that manufacturers can manufacture and calibrate by themselves.

[0018] 4. It has changed the traditional detection method of calipers and inside micrometers, improved detection efficiency, can be used for mass production, reduced the detection cost of parts, and has great application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram for demonstrating the working of the present invention; In the figure: 11, fork ear piece; 12, bushing; 21, through-end measuring head; 22, handle; 23, stop-end measuring head. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1 , Figure 2 , a technical solution proposed by the present invention: Example 1

[0023] A fork ear installation spacing detection go and stop gauge includes a through-end measuring head 21 and a stop-end measuring head 23. Both the through-end measuring head 21 and the stop-end measuring head 23 are short rod-shaped, with one end being a plane and the other end being a hemispherical surface. One side of the plane is used to lean against the boss of the bushing, and one side of the hemispherical surface is used to contact the surface of the bushing. This enables the device to better fit the surface of the bushing during the inspection process, thereby improving the accuracy of the inspection.

[0024] It also includes a handle 22, the two ends of which are respectively connected to the through-end measuring head 21 and the stop-end measuring head 23, and the three together form an I-shaped structure, and the handle 22 is connected to the through-end measuring head 21 and the stop-end measuring head 23 through threads. The handle part is designed to be 150 mm long and 15 mm in diameter, and is made of non-slip and wear-resistant plastic, so that the operator can hold and use it easily.

[0025] In this embodiment, further, the length of the through-end measuring head 21 is equal to the standard size to be measured, and the length of the stop-end measuring head 23 exceeds the maximum deviation size of the measured size. The design length of the example gap inspection pin part is 43mm through-end, 43.4mm stop-end, and 10mm in diameter.

[0026] In this embodiment, further, the material of the through-end measuring head 21 and the stop-end measuring head 23 is high-carbon high-chromium cold-working die steel, specifically Cr12MoV, to ensure its strength and wear resistance.

[0027] A method for detecting the installation spacing of fork ears, the method comprising the following steps: S1: Determine the space spacing size of the fork ear member 11 to be measured; S2: designing the size range of the through-end measuring head 21 and the stop-end measuring head 23 according to the size obtained in S1 and manufacturing the through-end measuring head 21 and the stop-end measuring head 23; S3: Checking the dimensions of the through-end measuring head 21 and the stop-end measuring head 23; S4: Assemble and connect the through-end measuring head 21, the stop-end measuring head 23 and the handle 22; S5: After the bushing 12 is installed on the fork ear 11, the through-end measuring head 21 and the stop-end measuring head 23 are used to respectively go around the end surface of the bushing 12 for a clearance inspection; S6: After the inspection, a conclusion is drawn to determine whether the installation clearance of the bushing 12 of the fork ear member 11 is qualified.

[0028] In actual operation, the inspection device is used to inspect the entire bushing. The specific operation method is to insert the gap inspection pin part into the gap of the bushing, and judge whether the gap of the bushing meets the requirements by feeling whether there is obvious resistance. If obvious resistance is felt, it means that the gap of the bushing is too small and needs to be adjusted; if no obvious resistance is felt, it means that the gap of the bushing is too large and needs to be adjusted.

[0029] By using this technical method, it is possible to more accurately determine which bushings are qualified and which are unqualified, thereby avoiding scrapping and rework due to misjudgment. At the same time, this technical solution can also effectively reduce the scrap rate and rework of bushings, and improve product quality and the efficiency of batch production operations.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A go / no-go gauge for detecting the installation spacing of a fork ear, characterized in that: It comprises a through-end measuring head (21) and a stop-end measuring head (23), wherein the through-end measuring head (21) and the stop-end measuring head (23) are both short rod-shaped, one end of which is a plane and the other end of which is a hemispherical surface.

2. A go / no-go gauge for detecting the installation spacing of fork ears according to claim 1, characterized in that: The length of the through-end measuring head (21) is equal to the standard dimension to be measured, and the length of the stop-end measuring head (23) exceeds the maximum deviation dimension of the dimension to be measured.

3. A go / no-go gauge for detecting the installation spacing of fork ears according to claim 2, characterized in that: It also comprises a handle (22), the two ends of the handle (22) being respectively connected to the through-end measuring head (21) and the stop-end measuring head (23), the three together forming an I-shaped structure, the handle (22) being connected to the through-end measuring head (21) and the stop-end measuring head (23) via threads.

4. A go / no-go gauge for detecting the installation spacing of fork ears according to claim 3, characterized in that: The material of the through-end measuring head (21) and the stop-end measuring head (23) is nylon-high carbon high chromium cold working die steel.

5. A method for detecting the installation spacing of fork ears, characterized in that: The method includes the following steps: S1: Determine the space spacing dimension required to be measured of the fork ear member (11) to be measured; S2: designing the size range of the through-end measuring head (21) and the stop-end measuring head (23) according to the size obtained in S1, and manufacturing the through-end measuring head (21) and the stop-end measuring head (23); S3: calibrating the dimensions of the through-end measuring head (21) and the stop-end measuring head (23); S4: Assembling and connecting the through-end measuring head (21), the stop-end measuring head (23), and the handle (22); S5: After the bushing (12) is mounted on the fork ear member (11), the through-end measuring head (21) and the stop-end measuring head (23) are used to respectively go around the end surface of the bushing (12) to perform a clearance inspection; S6: After the inspection, a conclusion is drawn to determine whether the installation clearance of the bushing (12) of the fork ear member (11) is qualified.

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