Filling blanking cap detection tool and detection method for filling hexagonal hole of internal hexagonal invisible bolt

Abstract

The invention discloses a detection tool and a detection method for a filling blanking cap for filling a hexagonal hole of an inner hexagonal invisible bolt. The detection tool is composed of an upper detection tool and a lower detection tool. The aperture of a hole A formed in the upper part of the upper detection tool is the same as the diameter of the excircle of the neck part of the filling blanking cap; a hole C is formed in the middle of the upper detection tool; the hole diameter of a hole B formed in the lower part of the upper detection tool is the same as the diameter of the lower detection tool; the upper detection tool and the lower detection tool are made of W6Mo5Cr4V2, the hardness HRC is 62-66 after quenching and tempering heat treatment, and the final surfaces of the tools are passivated; the detection method comprises the steps that the filling blanking cap is arranged in the upper detection tool; the lower detection tool is placed in a hole B formed in the upper detection tool; and finally, placing the assembled detection tool on a horizontal table, and measuring the distance between the end surface of the filling blanking cap and the surface C of the upper detection tool through a dial indicator, so as to calculate the matching size A of the filling blanking cap. The detection efficiency is high, and the measurement error is small; the use is simple, and the requirement on inspection personnel is low.

Description

Technical Field

[0001] The invention relates to a filling plugging cover detection tool and a detection method for filling a hexagonal hole of a hexagon socket invisible bolt, belonging to the technical field of detection of mechanically processed parts. Background Art

[0002] Conventional hexagon socket bolts that are tightened with a hexagonal wrench will have the hexagonal groove sunken and exposed after assembly, which will increase the radar wave reflection area and affect the stealth performance of the aircraft.

[0003] By filling the hexagonal hole of the hexagon socket bolt with a filling cap, the radar wave reflection area can be reduced and the stealth performance of the aircraft can be improved.

[0004] At present, hexagon socket invisible bolts are widely used on aircraft and are in great demand. Such products are produced frequently and in large quantities.

[0005] like Figure 2 As shown, due to the high precision requirement of the matching dimension A of the filling plug, it is required that after the filling plug is installed into the hexagonal hole of the hexagon socket bolt, the head end face of the filling plug is not allowed to protrude from the head end face of the bolt, and the recessed amount is not greater than 0.05mm; the traditional means of detecting the filling plug dimension A is to detect it through a vernier caliper or an image measuring instrument. This detection method not only has low detection efficiency, large measurement error, and low sampling rate; it also has high requirements for inspectors, increases the workload and difficulty of inspectors, and increases the product production cycle. Summary of the invention

[0006] The present invention aims to solve the technical problems of low detection efficiency, large measurement error, low sampling rate, high requirements for inspectors, increased workload and work difficulty for inspectors, and increased product production cycle.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: A filling plugging cover detection tool for filling the hexagonal hole of the hexagon socket invisible bolt, which is composed of an upper detection tool and a lower detection tool; The diameter of the hole A provided on the upper part of the detection tooling is the same as the outer diameter of the neck of the filling plug cap; A hole C is provided in the middle of the upper detection tooling; The diameter of the hole B provided at the lower part of the upper detection tooling is the same as the diameter of the lower detection tooling; The materials of the upper and lower inspection tools are both W6Mo5Cr4V2, which are tempered and heat treated to reach a hardness of HRC62-66. The final surface treatment of the tooling is passivation.

[0008] A method for detecting a filling plug for plugging a hexagonal hole of a hexagon socket invisible bolt comprises the following steps: Step 1: Install the filling plug into the detection tooling; Step 2: Place the lower inspection tool into the hole B set on the upper inspection tool; Step 3: Place the assembled inspection tooling on a horizontal surface, and use a dial indicator to measure the distance between the end face of the filling plug and the C surface of the inspection tooling to calculate the fitting dimension A of the filling plug.

[0009] The beneficial effects of adopting the above technical solution are: The present invention has high detection efficiency and small measurement error; it is easy to use and has low requirements on inspection personnel; it has stable and reliable detection, improves product detection quality, and shortens product production cycle; the detection tooling structure is simple, easy to process and manufacture, and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of a hexagon socket invisible bolt.

[0011] Figure 2 Schematic diagram of the filling plug structure in the hexagon socket invisible bolt.

[0012] Figure 3 for Figure 2 Left view.

[0013] Figure 4 It is a schematic diagram of the structure of the detection upper tooling in the filling plugging cover detection tooling for filling the hexagonal hole of the hexagon socket invisible bolt of the present invention.

[0014] Figure 5 for Figure 4 Section view of the middle AA plane.

[0015] Figure 6 It is a schematic diagram of the structure of the lower detection tool in the filling plugging cover detection tool for filling the hexagonal hole of the hexagon socket invisible bolt of the present invention.

[0016] Figure 7 for Figure 6 Left view.

[0017] Figure 8 This is a detection principle diagram of a filling plug detection tooling for filling a hexagonal hole with a hexagon socket invisible bolt according to the present invention.

[0018] In the figure: 1-inspection upper tooling, 2-inspection lower tooling, 3-hole A, 4-hole C, 5-hole B, 6-filling plugging cover 6. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] A filling plug detection tool for filling the hexagonal hole of the hexagon socket invisible bolt, according to the filling plug, such as Figure 2 The outer circle size of the neck shown is used as the design basis of the tooling, and according to the requirements of actual use, a tooling is designed that can quickly and conveniently detect the filling plug cover matching dimension A.

[0021] A filling plug detection tool for filling a hexagonal hole of a hexagon socket invisible bolt, comprising an upper detection tool 1 and a lower detection tool 2; a hole A3 is provided on the upper part of the upper detection tool 1, and its diameter is the same as the outer diameter of the neck of the filling plug 6; a hole C4 is provided in the middle of the upper detection tool 1; a hole B5 is provided on the lower part of the upper detection tool 1, and its diameter is the same as the diameter of the lower detection tool 2; the materials of the upper detection tool 1 and the lower detection tool 2 are both W6Mo5Cr4V2, and after tempering heat treatment to reach a hardness of HRC62-66, the final surface treatment of the tool is passivation.

[0022] A method for detecting a filling plug for plugging a hexagonal hole of a hexagon socket invisible bolt comprises the following steps: Step 1: Install the filling plug 6 into the detection upper tooling 1; Step 2: Place the lower detection tool 2 into the hole B5 set in the upper detection tool 1; Step 3: Place the assembled inspection tooling on a horizontal surface, and use a dial indicator to measure the distance between the end face of the filling plug and the C surface of the inspection tooling to calculate the fitting dimension A of the filling plug.

[0023] The inspection tool is easy to use and has low requirements for inspectors. Compared with the traditional inspection method using vernier calipers or image measuring instruments, this inspection method is highly efficient and can reduce production cycles and production costs. The traditional inspection method is affected by the skill level of the inspectors, with large inspection errors and cannot meet the use requirements after assembly. The use of this inspection tool can avoid this situation. The inspection tool is stable and reliable, and improves the quality of product inspection. It also has a simple structure, is easy to process, and has a low manufacturing cost.

[0024] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper", "middle", "lower", etc. are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

Claims

1. A filling plug detection tool for filling the hexagonal hole of the hexagon socket invisible bolt, characterized by: It consists of an upper detection tooling (1) and a lower detection tooling (2); The hole A (3) provided on the upper part of the detection tooling (1) has a hole diameter which is the same as the outer diameter of the neck of the filling plug cover (6); The detection upper tooling (1) has a hole C (4) in the middle; The hole B (5) provided at the lower part of the upper detection tooling (1) has a diameter that is the same as the diameter of the lower detection tooling (2); The materials of the upper detection fixture (1) and the lower detection fixture (2) are both W6Mo5Cr4V2, which has a hardness of HRC62-66 after being subjected to quenching and tempering heat treatment. The final surface treatment of the fixture is passivation.

2. The method for detecting a filling plugging cover used for filling a hexagonal hole of a hexagon socket invisible bolt by using the detection tool as claimed in claim 1, characterized in that: It includes the following steps: Step 1: Install the filling plug (6) into the detection upper tooling (1); Step 2: Place the lower detection tooling (2) into the hole B (5) provided on the upper detection tooling (1); Step 3: Place the assembled inspection tooling on a horizontal surface, and use a dial indicator to measure the distance between the end face of the filling plug and the C surface of the inspection tooling to calculate the fitting dimension A of the filling plug.

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