An internal thread detection device

Abstract

The utility model discloses a female thread detection device, including cantilever support, rotating electrical machines and thread gauge, the cantilever support includes support seat, first cantilever and second cantileaver, first cantilever is rotatablely connected on support seat, one end of second cantileaver is rotatablely connected on first cantilever, the other end rotatablely connected with mounting seat of second cantileaver, rotating electrical machines are located on mounting seat, still be equipped with the depth detection mechanism for detecting female thread depth on mounting seat, the output shaft connection of thread gauge and rotating electrical machines, the depth detection mechanism is located one side of thread gauge. The utility model has the advantages of flexible detection position, strong adaptability, and can detect female thread depth.

Description

Technical Field

[0001] This utility model relates to the field of parts inspection technology, specifically to an internal thread inspection device. Background Technology

[0002] Chinese patent CN103743305A discloses a nut internal thread inspection machine. The machine places the nut on a rotating disk, and the rotating disk rotates the nut to be inspected to a position below the inspection robot. Finally, the internal thread of the nut is inspected using a thread gauge. The frame of this inspection machine is fixed, so the part to be inspected needs to be placed on the rotating disk during inspection. It is only suitable for inspecting the internal threads of parts that are easy to move, such as nuts. If the part is not easy to move, it is difficult to inspect, and its adaptability is poor. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an internal thread detection device that is flexible in detection position, highly adaptable, and capable of detecting the depth of internal threads.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An internal thread testing device includes a cantilever bracket, a rotary motor, and a thread gauge. The cantilever bracket includes a support base, a first cantilever, and a second cantilever. The first cantilever is rotatably connected to the support base. One end of the second cantilever is rotatably connected to the first cantilever. The other end of the second cantilever is rotatably connected to a mounting base. The rotary motor is mounted on the mounting base. The mounting base is also equipped with a depth detection mechanism for detecting the depth of the internal thread. The thread gauge is connected to the output shaft of the rotary motor, and the depth detection mechanism is located on one side of the thread gauge.

[0005] As a further improvement to the above technical solution: The first cantilever includes a first link and a second link that are parallel to each other. The rotational connection points of the first link and the second link with the support are respectively set as A and B, and the rotational connection points with the mounting base are respectively set as C and D. A, B, C, and D form a parallelogram structure, and the line connecting AB and CD are both vertical straight lines.

[0006] The support base is provided with a first hinge seat, and one end of the first connecting rod and the second connecting rod are both connected to the first hinge seat. The mounting base is provided with a second hinge seat, and the other end of the first connecting rod and the second connecting rod are both connected to the second hinge seat.

[0007] The depth detection mechanism includes a displacement sensor, a first adjusting rod, and a mounting rod. The first adjusting rod is rotatably mounted on a mounting base and is equipped with a first fixing component. The mounting rod is mounted on the first adjusting rod, and the displacement sensor is mounted on the mounting rod. The displacement sensor is equipped with a retractable detection rod.

[0008] A bearing is provided between the first adjusting rod and the mounting base.

[0009] A second adjusting rod is rotatably connected to the mounting rod, and the second adjusting rod is equipped with a second fixing component. The displacement sensor is mounted on the second adjusting rod.

[0010] The first fixing component includes a first adjusting nut and a first compression spring. The first adjusting nut is threadedly connected to the rotation shaft of the first adjusting rod, and the first compression spring is located between the first adjusting nut and the mounting base. The second fixing component includes a second adjusting nut and a second compression spring. The second adjusting nut is threadedly connected to the rotation shaft of the second adjusting rod, and the second compression spring is located between the second adjusting nut and the second adjusting rod.

[0011] The output shaft of the rotary motor is connected to a torque chuck, and the torque chuck is equipped with a thread gauge clamp, on which the thread gauge is held.

[0012] The thread gauge is a go gauge.

[0013] The mounting base is equipped with a handle.

[0014] Compared with the prior art, the advantages of this utility model are: The internal thread testing device disclosed in this utility model has a first cantilever that is rotatably connected to a support base. Rotating the first cantilever adjusts the left-right position of the thread gauge. A second cantilever is rotatably connected to the first cantilever, and rotating the second cantilever adjusts the up-down position of the thread gauge. This achieves the goal of adjusting the thread gauge's position in all directions, reducing the movement of the workpiece being tested, making the testing position more flexible, and fixing the workpiece also facilitates the alignment of the thread gauge with the internal thread being tested, improving testing accuracy. Furthermore, the thread gauge has the freedom to rotate in all directions, allowing it to rotate downwards under the drive of a rotary motor to test the internal thread, while a depth detection mechanism simultaneously detects the thread depth. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the internal thread detection device of this utility model.

[0016] Figure 2 This is a three-dimensional structural diagram of the depth detection mechanism of the internal thread detection device of this utility model.

[0017] The labels in the diagram represent: 1. Cantilever bracket; 11. Support seat; 12. First cantilever; 13. Second cantilever; 14. First connecting rod; 15. Second connecting rod; 16. First hinge seat; 2. Rotary motor; 21. Torque chuck; 22. Thread gauge clamp; 3. Thread gauge; 4. Mounting seat; 41. Second hinge seat; 42. Handle; 5. Depth detection mechanism; 51. Displacement sensor; 511. Detection rod; 52. First adjusting rod; 53. Mounting rod; 54. First fixing component; 55. Second adjusting rod; 56. Second fixing component; 57. First adjusting nut; 58. First compression spring; 59. Second adjusting nut; 60. Second compression spring. Detailed Implementation

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

[0019] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] 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 indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Figure 1 and Figure 2This invention illustrates an embodiment of the internal thread detection device. The device includes a cantilever bracket 1, a rotary motor 2, and a thread gauge 3. The cantilever bracket 1 includes a support base 11, a first cantilever 12, and a second cantilever 13. The first cantilever 12 is rotatably connected to the support base 11. One end of the second cantilever 13 is rotatably connected to the first cantilever 12, and the other end of the second cantilever 13 is rotatably connected to a mounting base 4. The rotary motor 2 is mounted on the mounting base 4, which also has a depth detection mechanism 5 for detecting the depth of the internal thread. The thread gauge 3 is connected to the output shaft of the rotary motor 2, and the depth detection mechanism 5 is located on one side of the thread gauge 3.

[0023] This internal thread inspection device has a first cantilever 12 rotatably connected to a support base 11. Rotating the first cantilever 12 adjusts the left-right position of the thread gauge 3. A second cantilever 13 rotatably connected to the first cantilever 12 adjusts the up-down position of the thread gauge 3. This allows the thread gauge 3 to be adjusted in all directions, reducing movement of the workpiece and making the inspection position more flexible. Fixing the workpiece also facilitates alignment between the thread gauge 3 and the internal thread being inspected, improving inspection accuracy. Furthermore, the thread gauge 3 has the freedom to rotate in all directions, allowing it to rotate downwards under the drive of the rotary motor 2 to inspect the internal thread, while the depth inspection mechanism 5 detects the thread depth.

[0024] Furthermore, in this embodiment, the first cantilever 12 includes a first connecting rod 14 and a second connecting rod 15 that are parallel to each other. The rotational connection points of the first connecting rod 14 and the second connecting rod 15 with the support base 11 are respectively set as A and B, and the rotational connection points with the mounting base 4 are respectively set as C and D. A, B, C, and D form a parallelogram structure, and the lines connecting AB and CD are both vertical straight lines. Since the line connecting AB is a vertical straight line, the parallelogram structure can ensure that when the first connecting rod 14 and the second connecting rod 15 rotate, the mounting base 4 always remains vertically raised and lowered, that is, the thread gauge 3 remains vertically raised and lowered for detection, ensuring stability during the detection process.

[0025] Furthermore, in this embodiment, the support base 11 is provided with a first hinge seat 16, and one end of the first connecting rod 14 and the second connecting rod 15 are both connected to the first hinge seat 16. The mounting base 4 is provided with a second hinge seat 41, and the other end of the first connecting rod 14 and the second connecting rod 15 are both connected to the second hinge seat 41. This facilitates the hinge connection and installation of the first connecting rod 14 and the second connecting rod 15.

[0026] Further, in this embodiment, the depth detection mechanism 5 includes a displacement sensor 51, a first adjusting rod 52, and a mounting rod 53. The first adjusting rod 52 is rotatably mounted on the mounting base 4 and is equipped with a first fixing component 54. The mounting rod 53 is mounted on the first adjusting rod 52, and the displacement sensor 51 is mounted on the mounting rod 53. The displacement sensor 51 is equipped with a retractable detection rod 511. Rotating the first adjusting rod 52 will cause the mounting rod 53 and the displacement sensor 51 to rotate around the first adjusting rod 52. The first adjusting rod 52 is located on one side of the thread gauge 3, so the relative position of the displacement sensor 51 and the thread gauge 3 can be adjusted so that the lower end of the detection rod 511 abuts against the upper surface of the workpiece being tested. Then, the first adjusting rod 52 is fixed by the first fixing component 54. When the thread gauge 3 rotates and descends for testing, the mounting base 4 follows and descends. At this time, the distance that the detection rod 511 shortens is the measured internal thread depth.

[0027] Furthermore, in this embodiment, a bearing is provided between the first adjusting rod 52 and the mounting base 4. This reduces the frictional force during the rotation of the first adjusting rod 52, facilitating its installation.

[0028] Furthermore, in this embodiment, a second adjusting rod 55 is rotatably connected to the mounting rod 53, and the second adjusting rod 55 is equipped with a second fixing component 56. The displacement sensor 51 is mounted on the second adjusting rod 55. Adding the second adjusting rod 55 allows the mounting rod 53 to rotate further around a rotation point on the second adjusting rod 55, increasing the adjustment range and adapting to the detection of workpieces of different sizes.

[0029] Further, in this embodiment, the first fixing component 54 includes a first adjusting nut 57 and a first compression spring 58. The first adjusting nut 57 is threadedly connected to the rotation shaft of the first adjusting rod 52, and the first compression spring 58 is located between the first adjusting nut 57 and the mounting base 4. The second fixing component 56 includes a second adjusting nut 59 and a second compression spring 60. The second adjusting nut 59 is threadedly connected to the rotation shaft of the second adjusting rod 55, and the second compression spring 60 is located between the second adjusting nut 59 and the second adjusting rod 55. Loosening the first adjusting nut 57 allows the first adjusting rod 52 to rotate. After adjustment, tightening the first adjusting nut 57 presses against the first compression spring 58 for fixing. The first compression spring 58 provides preload to prevent the first adjusting rod 52 from rotating.

[0030] Furthermore, in this embodiment, the output shaft of the rotary motor 2 is connected to a torque chuck 21, and a thread gauge clamp 22 is provided on the torque chuck 21, with the thread gauge 3 clamped on the thread gauge clamp 22. This facilitates the transmission of torque and the installation of the thread gauge 3.

[0031] Furthermore, in this embodiment, the thread gauge 3 is a go gauge. Preferably, after the go gauge inspection is completed, a no-go gauge can be clamped on the thread gauge clamp 22 for further inspection.

[0032] Furthermore, in this embodiment, the mounting base 4 is provided with a handle 42. This facilitates the operator to move the mounting base 4, and thus move the thread gauge 3.

[0033] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. An internal thread detection device, characterized in that: The device includes a cantilever bracket (1), a rotary motor (2), and a thread gauge (3). The cantilever bracket (1) includes a support base (11), a first cantilever (12), and a second cantilever (13). The first cantilever (12) is rotatably connected to the support base (11). One end of the second cantilever (13) is rotatably connected to the first cantilever (12). The other end of the second cantilever (13) is rotatably connected to a mounting base (4). The rotary motor (2) is mounted on the mounting base (4). The mounting base (4) is also provided with a depth detection mechanism (5) for detecting the depth of the internal thread. The thread gauge (3) is connected to the output shaft of the rotary motor (2). The depth detection mechanism (5) is located on one side of the thread gauge (3).

2. The internal thread detection device according to claim 1, characterized in that: The first cantilever (12) includes a first link (14) and a second link (15) that are parallel to each other. The rotation connection points of the first link (14) and the second link (15) with the support (11) are respectively set as A and B, and the rotation connection points with the mounting base (4) are respectively set as C and D. The A, B, C and D form a parallelogram structure, and the line connecting AB and the line connecting CD are both vertical straight lines.

3. The internal thread detection device according to claim 2, characterized in that: The support base (11) is provided with a first hinge seat (16), one end of the first connecting rod (14) and the second connecting rod (15) are both connected to the first hinge seat (16), and the mounting base (4) is provided with a second hinge seat (41), the other end of the first connecting rod (14) and the second connecting rod (15) are both connected to the second hinge seat (41).

4. The internal thread detection device according to claim 1, characterized in that: The depth detection mechanism (5) includes a displacement sensor (51), a first adjusting rod (52) and a mounting rod (53). The first adjusting rod (52) is rotatably mounted on the mounting base (4) and is equipped with a first fixing component (54). The mounting rod (53) is mounted on the first adjusting rod (52). The displacement sensor (51) is mounted on the mounting rod (53) and is equipped with a retractable detection rod (511).

5. The internal thread detection device according to claim 4, characterized in that: A bearing is provided between the first adjusting rod (52) and the mounting base (4).

6. The internal thread detection device according to claim 4, characterized in that: The mounting rod (53) is rotatably connected to a second adjusting rod (55), and the second adjusting rod (55) is equipped with a second fixing component (56). The displacement sensor (51) is mounted on the second adjusting rod (55).

7. The internal thread detection device according to claim 6, characterized in that: The first fixing component (54) includes a first adjusting nut (57) and a first compression spring (58). The first adjusting nut (57) is threadedly connected to the rotation shaft of the first adjusting rod (52). The first compression spring (58) is located between the first adjusting nut (57) and the mounting base (4). The second fixing component (56) includes a second adjusting nut (59) and a second compression spring (60). The second adjusting nut (59) is threadedly connected to the rotation shaft of the second adjusting rod (55). The second compression spring (60) is located between the second adjusting nut (59) and the second adjusting rod (55).

8. The internal thread detection device according to any one of claims 1 to 7, characterized in that: The output shaft of the rotary motor (2) is connected to a torque chuck (21), and a thread gauge clamp (22) is provided on the torque chuck (21). The thread gauge (3) is clamped on the thread gauge clamp (22).

9. The internal thread detection device according to any one of claims 1 to 7, characterized in that: The thread gauge (3) is a go gauge.

10. The internal thread detection device according to any one of claims 1 to 7, characterized in that: The mounting base (4) is provided with a handle (42).

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