A combined gauge for bolts

Abstract

A combined gauge for bolt, comprising a first gauge body and a second gauge body, the first gauge body is provided with a bolt rod insertion hole for detecting a bolt rod, one side of the bolt rod insertion hole is a bolt head placing hole; the second gauge body is provided with a convex column for detecting a counterbore on the bolt head; the first gauge body and the second gauge body can be assembled and combined, and after the combination, the convex column can be inserted into the counterbore on the bolt head. The utility model provides a combined gauge for bolt, solves the problem of bolt detection complexity, greatly improves the detection efficiency and detection quality of the bolt; and the gauge is compact in structure, convenient to use, efficient in detection and low in cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of bolt inspection devices, specifically relating to a combined inspection tool for bolts. Background Technology

[0002] Bolts are a widely used type of hardware structural component in various industries. They are used in conjunction with nuts or threaded holes to provide a good fastening effect. Over time, bolt fasteners have evolved to include a variety of structures and functions to adapt to different application scenarios.

[0003] In existing technologies, bolts generally consist of a bolt shank and a bolt head. For bolts used in high-precision environments, the straightness of the bolt shank, the coaxiality of the bolt shank and bolt head, and the coaxiality of the inner hole in the bolt head all need to meet high precision requirements. Currently, these inspection items require multiple inspection tools, which is time-consuming, labor-intensive, and cumbersome.

[0004] Therefore, based on the aforementioned shortcomings, this application further designs and improves the combined bolt inspection fixture. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a combined inspection tool for bolts, which solves the problem of complex bolt inspection and greatly improves the inspection efficiency and quality of bolts.

[0006] The present invention is solved by the following technical solution.

[0007] A combined inspection tool for bolts includes a first inspection tool body and a second inspection tool body. The first inspection tool body has a bolt shank insertion hole for inspecting the bolt shank, and one side of the bolt shank insertion hole is a bolt head placement hole. The second inspection tool body has a protrusion for inspecting the countersunk hole on the bolt head. The first inspection tool body and the second inspection tool body can be assembled and combined, and after assembly, the protrusion can be inserted into the countersunk hole on the bolt head.

[0008] The combined inspection fixture in this application uses two fixture bodies assembled for inspection. It has a compact structure, is easy to use, and can complete multiple inspection procedures in a single operation. During use, the bolt shank is inserted into the bolt shank insertion hole, which has a standard inner diameter. If it cannot be inserted, the bolt shank is too thick and unqualified; if there is a large radial movement space after insertion, the bolt shank is too thin and also unqualified. After the bolt shank is inserted into the bolt shank insertion hole, the bolt flange and bolt head are placed in the bolt head placement hole. Then, the second fixture body is assembled into the first fixture body. If the protrusion can be inserted into the countersunk hole on the bolt head, it indicates that the coaxiality of the bolt shank and bolt head is correct, and the product is qualified.

[0009] In a preferred embodiment, the first fixture body has an assembly boss on the end face with a bolt head placement hole, and the second fixture body has a matching assembly recess, with the protrusion disposed in the assembly recess, resulting in a compact overall assembly structure.

[0010] In a preferred embodiment, the outer wall of the protruding post is provided with a structure that matches the inner wall structure of the countersunk hole, for detecting whether the inner wall structure of the countersunk hole is qualified.

[0011] Compared with the prior art, the present invention has the following advantages: it provides a combined inspection tool for bolts, which solves the problem of complex bolt inspection and greatly improves the inspection efficiency and quality of bolts. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a bolt that needs to be inspected according to this utility model. Figure 1 .

[0013] Figure 2 This is a schematic diagram of a bolt that needs to be inspected according to this utility model. Figure 2 .

[0014] Figure 3 This is a schematic diagram of the first inspection fixture body in this utility model.

[0015] Figure 4 This is a schematic diagram of the second inspection fixture body in this utility model.

[0016] Figure 5 This is a schematic diagram of the first and second inspection fixture bodies assembled in this utility model.

[0017] Figure 6 This is a schematic diagram of the combined inspection tool of this utility model used for inspecting bolts. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] In the following embodiments, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this utility model, it should be understood that the terms such as center, longitudinal, transverse, length, width, thickness, upper, lower, front, back, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, and counterclockwise, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features shown. In the description of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] See Figures 1 to 6 , Figure 1 and Figure 2 The diagram shows a bolt that needs to be inspected. The bolt has a long bolt shank 1, one end of which has a flange 2 and a bolt head 3. The bolt head 3 has a countersunk hole 4, and the inner wall of the countersunk hole 4 has a structure for tool operation, such as an internal polygonal structure, an internal tooth structure, or a cross-shaped structure.

[0022] from Figures 3 to 6 As can be seen from the above, the combined inspection tool for bolts involved in this application includes a first inspection tool body 5 and a second inspection tool body 6. The first inspection tool body 5 is provided with a bolt shank insertion hole 51 for detecting bolt shank 1, and one side of the bolt shank insertion hole 51 is a bolt head placement hole 52. The second inspection tool body 6 is provided with a protrusion 62 for detecting the countersunk hole 4 on the bolt head 3. The first inspection tool body 5 and the second inspection tool body 6 can be assembled and combined, and after assembly, the protrusion 62 can be inserted into the countersunk hole 4 on the bolt head.

[0023] Furthermore, the first fixture body 5 has a mounting boss 53 on the end face of the bolt head placement hole 52, and the second fixture body 6 has a matching mounting recess 61. The protruding post 62 is disposed in the mounting recess 61, resulting in a compact overall assembly structure. The outer wall of the protruding post 62 has a structure that matches the inner wall structure of the countersunk hole 4, used to detect whether the inner wall structure of the countersunk hole 4 is qualified. For example, the inner wall of the countersunk hole 4 can be an inner polygonal structure, an inner toothed structure, or a cross-shaped structure, etc., and the outer wall of the protruding post 62 has a corresponding outer polygonal structure, an outer toothed structure, or an outer cross-shaped structure, etc., which can be inserted accordingly to detect the matching degree of the structure.

[0024] As can be seen from the above description, the combined inspection fixture in this application uses two fixture bodies assembled for inspection. It has a compact structure, is easy to use, and can complete multiple inspection procedures in one operation. In use, the bolt shank 1 is inserted into the bolt shank insertion hole 51. The inner diameter of the bolt shank insertion hole 51 is a standard size. If it cannot be inserted, it indicates that the bolt shank 1 is too thick and unqualified; if there is a large radial movement space after insertion, it indicates that the bolt shank 1 is too thin and also unqualified. After the bolt shank 1 is inserted into the bolt shank insertion hole 51, the bolt flange 2 and bolt head 3 are placed in the bolt head placement hole 52. Then, the second fixture body 6 is assembled into the first fixture body 5. At this time, if the protrusion 62 can be inserted into the countersunk hole 4 on the bolt head, it indicates that the coaxiality of the bolt shank 1 and the bolt head 3 is correct, and it is a qualified product. At the same time, by checking whether the protrusion 62 can be matched and inserted into the countersunk hole 4, the internal wall structure of the countersunk hole 4 can also be checked for qualification.

[0025] As described above, this utility model provides a combined inspection tool for bolts, which solves the problem of complex bolt inspection and greatly improves the inspection efficiency and quality of bolts; moreover, the inspection tool has a compact structure, is easy to use, and is highly efficient and low in cost.

[0026] The scope of protection of this utility model includes, but is not limited to, the above embodiments. The scope of protection of this utility model is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art shall fall within the scope of protection of this utility model.

Claims

1. A combined inspection tool for bolts, characterized in that, It includes a first inspection body (5) and a second inspection body (6). The first inspection body (5) is provided with a bolt rod insertion hole (51) for inspecting the bolt rod (1). One side of the bolt rod insertion hole (51) is a bolt head placement hole (52). The second inspection fixture body (6) is provided with a protrusion (62) for inspecting the countersunk hole (4) on the bolt head (3); The first gauge body (5) and the second gauge body (6) can be assembled and combined. After assembly, the protrusion (62) can be inserted into the countersunk hole (4) on the bolt head.

2. A combined inspection tool for bolts according to claim 1, characterized in that, The first inspection fixture body (5) has an assembly boss (53) on the end face of the bolt head placement hole (52), and the second inspection fixture body (6) has a matching assembly recess (61), and the protrusion (62) is located in the assembly recess (61).

3. A combined inspection tool for bolts according to claim 1 or 2, characterized in that, The outer wall of the protruding post (62) is provided with a structure that matches the inner wall structure of the countersunk hole (4).

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