Axis hole testing fixture

Abstract

The utility model discloses an axis hole testing fixture, which comprises a base, a testing hole and a profiling positioning groove are arranged on the base, a testing shaft is arranged in the center of the testing hole, the diameter of the testing shaft is smaller than that of the testing hole, the profiling positioning groove is positioned on one side of the testing shaft, and a connecting part for positioning the profiling groove to place a part is arranged on the profiling positioning groove. The detection hole is placed in the shaft hole portion of the part, rapid detection of the axis hole of the part is achieved, detection efficiency is improved, an independent positioning tool is not needed, and cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of parts inspection tools, and more specifically relates to an axial hole inspection tool. Background Art

[0002] With the development and progress of society, the user experience of foldable phones has attracted more and more attention. The requirements for the stability and flexibility of the hinges of foldable phones are getting higher and higher, and the opening and closing experience of foldable phones is required to be almost zero-defect. The hinge of the hinge assembly used in foldable phones combines the original two parts into one hinge, which not only saves design space, but also brings great lightness to foldable phones. Therefore, it is widely recognized by the society. Therefore, the swing arm parts of the hinge assembly are required to have higher dimensional stability, otherwise it is easy to cause the opening and closing experience of the foldable phone to not be smooth, seriously affecting the consumer's product experience.

[0003] like Figure 3 The shaft hole parts shown include a shaft hole portion and a connecting portion, and a transparent axial center hole is provided on the shaft hole portion. First, it is necessary to detect the dimensional accuracy of the axial center hole in all aspects, including the accuracy of the axial center hole. At present, the shaft hole measurement of such parts is mainly through three-coordinate measurement, but three-coordinate measurement is time-consuming and has low measurement efficiency. Moreover, since the position of the hole to be measured in this part is relatively deep, the three-coordinate probe may interfere with other parts of the part, thereby bringing more cumbersome steps to the measurement of the part. In addition, since the part also has a reference hole for positioning, it is necessary to make a matching positioning tooling to measure it on the three-coordinate, which is also a cost output.

[0004] Therefore, the present invention aims to provide a fast and high-precision axial hole inspection tool to improve inspection efficiency. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a checking fixture capable of improving the efficiency of axial hole detection.

[0006] To achieve the above-mentioned purpose, the present utility model provides the following technical solution: an axial hole inspection fixture, comprising a base, a detection hole and a profiling positioning groove being provided on the base, a detection axis being provided at the center of the detection hole, the diameter of the detection axis being smaller than the diameter of the detection hole, the profiling positioning groove being located on one side of the detection axis, the positioning profiling groove being used to place the connecting portion of the part, and the detection hole being used to place the axial hole portion of the part.

[0007] Furthermore, a clearance groove is provided on the base, and the clearance groove is located between the detection hole and the contour positioning groove, and two sides of the clearance groove are respectively connected to the detection hole and the contour positioning groove.

[0008] Furthermore, a detection plane and a positioning plane are provided on the base, the detection plane is lower than the positioning plane, the detection hole is located on the detection plane, the contoured positioning groove is located on the positioning plane, and the air avoidance groove is located between the detection plane and the positioning plane.

[0009] Furthermore, the end of the detection shaft is higher than the top of the detection hole.

[0010] Furthermore, a mounting rod is provided on the detection shaft, and the mounting rod is placed in the detection hole.

[0011] Furthermore, the tops of the detection axis and the contoured positioning groove are both provided with chamfers.

[0012] Compared with the prior art, the beneficial effect of the present invention is that when inspecting the axial center hole of a part, the part is moved to the top of the base, the axial center hole on the axial hole portion of the part is aligned with the inspection axis, the connecting portion of the part is aligned with the contour positioning groove, and then the connecting portion of the part is placed in the contour positioning groove until the inspection axis is inserted into the axial center hole, and the inspection is started. If the inspection axis can smoothly insert into and out of the axial center hole, it indicates that all dimensions of the axial center hole are qualified, thereby realizing rapid inspection of the axial center hole of the part, improving inspection efficiency, eliminating the need for separate positioning tooling, and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of the axial hole inspection fixture of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the axial hole inspection tool of the utility model when inspecting parts;

[0015] Figure 3 A schematic diagram of the structure of the parts.

[0016] Reference numerals: base 1; detection hole 2; contoured positioning groove 3; detection shaft 4; air avoidance groove 5; detection plane 6; positioning plane 7; part 8; axial center hole 9. DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which 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 direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0018] Furthermore, the terms "first" and "second" 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. Therefore, the terms "first" and "second" may explicitly or implicitly refer to one or more of these features. In the description of this utility model, "several" and "a number" mean two or more, unless otherwise specifically defined.

[0019] Reference Figures 1 to 3 The utility model is further described.

[0020] A shaft center hole inspection fixture includes a base 1, on which a detection hole 2 and a profiling positioning groove 3 are provided. A detection shaft 4 is provided at the center of the detection hole 2. The diameter of the detection shaft 4 is smaller than the diameter of the detection hole 2. The profiling positioning groove 3 is located on one side of the detection shaft 4. The positioning profiling groove is used to place the connecting part of the part 8, and the detection hole 2 is used to place the axial hole part of the part 8.

[0021] like Figure 1 As shown, in this embodiment, preferably, the base 1 is provided with an air-avoiding groove 5, the air-avoiding groove 5 is located between the detection hole 2 and the contour positioning groove 3, and the two sides of the air-avoiding groove 5 are connected to the detection hole 2 and the contour positioning groove 3 respectively.

[0022] like Figure 1 As shown, in this example, preferably, a detection plane 6 and a positioning plane 7 are provided on the base 1, the detection plane 6 is lower than the positioning plane 7, the detection hole 2 is located on the detection plane 6, the contoured positioning groove 3 is located on the positioning plane 7, and the air avoidance groove 5 is located between the detection plane 6 and the positioning plane 7.

[0023] like Figure 1 As shown, in this example, preferably, the end of the detection shaft 4 is higher than the top of the detection hole 2.

[0024] In this embodiment, preferably, a mounting rod is provided on the detection shaft 4 , and the mounting rod is placed in the detection hole 2 to facilitate the installation and removal of the detection shaft 4 .

[0025] like Figure 1 As shown, in this embodiment, preferably, the tops of the detection shaft 4 and the contoured positioning groove 3 are both provided with chamfers to facilitate the placement of the part 8.

[0026] like Figures 1 to 3As shown, when inspecting the axial center hole 9 of the part 8, the part 8 is moved to the top of the base 1, the axial center hole 9 on the axial hole portion of the part 8 is aligned with the inspection shaft 4, the connecting portion of the part 8 is aligned with the profiling positioning groove 3, and then the connecting portion of the part 8 is placed into the profiling positioning groove 3 until the inspection shaft 4 is inserted into the axial center hole 9, and the inspection is started. If the inspection shaft 4 can smoothly insert into and pass through the axial center hole 9, it indicates that all dimensions of the axial center hole 9 are qualified, thereby realizing rapid inspection of the axial center hole 9 of the part 8, improving inspection efficiency, eliminating the need for separate positioning tooling, and reducing costs.

[0027] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An axial hole inspection tool, characterized by: It includes a base, which is provided with a detection hole and a contour positioning groove. A detection axis is provided at the center of the detection hole. The diameter of the detection axis is smaller than the diameter of the detection hole. The contour positioning groove is located on one side of the detection axis. The positioning contour groove is used to place the connecting part of the part, and the detection hole is used to place the axial hole part of the part.

2. The axial hole inspection fixture according to claim 1, characterized in that: The base is provided with an air-avoiding groove, which is located between the detection hole and the contour positioning groove. Both sides of the air-avoiding groove are respectively connected to the detection hole and the contour positioning groove.

3. The axial hole inspection tool according to claim 2, characterized in that: The base is provided with a detection plane and a positioning plane, the detection plane is lower than the positioning plane, the detection hole is located on the detection plane, the contoured positioning groove is located on the positioning plane, and the avoidance groove is located between the detection plane and the positioning plane.

4. The axial hole inspection fixture according to claim 1, characterized in that: The end of the detection shaft is higher than the top of the detection hole.

5. The axial hole inspection fixture according to claim 1, characterized in that: A mounting rod is provided on the detection shaft, and the mounting rod is placed in the detection hole.

6. The axial hole inspection fixture according to claim 1, characterized in that: The tops of the detection shaft and the contoured positioning groove are both provided with chamfers.

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