A shaft detection device with a semi-lunar groove

Abstract

This invention relates to a shaft inspection device with a meniscus. The shaft inspection device includes a base and a compliance inspection component. The base has a first through hole extending in a first direction and a second through hole extending in a second direction. The first through hole is adapted to the shape of the meniscus, and the second through hole communicates with the first through hole. The compliance inspection component includes a first linear drive and a plug gauge. The first linear drive is disposed opposite to one end of the first through hole, and the plug gauge is disposed at the output end of the first linear drive, and the plug gauge is adapted to the shape of the first through hole. This application, by using the first linear drive and the plug gauge in conjunction with the first and second through holes, can perform compliance inspection on the meniscus, ensuring that the meniscus meets processing standards, thereby improving the yield of the tested shaft.

Description

Technical Field

[0001] This invention relates to the field of shaft component testing technology, specifically to a shaft testing device with a crescent groove. Background Technology

[0002] An automotive input shaft is the shaft that connects the engine and the transmission. It transmits power from the engine to the transmission and allows the driver to control the vehicle's speed and RPM via the gear lever.

[0003] After the input shaft is manufactured, it is usually subjected to quality inspection before leaving the factory to ensure its quality.

[0004] The input shaft has a semi-lunar groove, and currently, the dimensions (e.g., radius) of the semi-lunar groove are measured manually using handheld measuring tools (such as vernier calipers). However, manual measurement is not only tedious, but also leads to decreased operator attention over long periods, resulting in frequent measurement errors and thus increasing the error rate. Summary of the Invention

[0005] Based on the above description, the present invention provides a shaft detection device with a semi-circular groove, which aims to solve the problem of high error rate in the dimensions of the semi-circular groove of the existing manual measurement of input shafts.

[0006] The technical solution of the present invention to solve the above technical problems is as follows:

[0007] A shaft detection device with a crescent groove, the shaft detection device comprising:

[0008] The base has a first through hole extending in a first direction and a second through hole extending in a second direction, the first through hole being adapted to the shape of the crescent groove, and the second through hole communicating with the first through hole.

[0009] A compliance testing component includes a first linear drive and a plug gauge. The first linear drive is disposed opposite to one end of the first through hole, and the plug gauge is disposed at the output end of the first linear drive. The plug gauge is adapted to the shape of the first through hole.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, the compliance testing component includes at least two fixed posts, and the first linear drive is fixed to the base by the at least two fixed posts.

[0012] Furthermore, the base has a stepped hole extending along the second direction and communicating with the first direction, and the stepped hole is located on the side of the second through hole away from the first linear drive member. The shaft detection device includes a positioning mechanism, which includes a moving rod, a second linear drive member, and a positioning detection component. The moving rod is constructed in a cross shape and is movably disposed in the stepped hole. The moving rod has a first end and a second end. The first end has a connecting hole extending toward the second end, and the second end has a receiving hole extending toward the first end. The output end of the second linear drive member is connected to the connecting hole, and the positioning detection component is disposed in the receiving hole.

[0013] Furthermore, the positioning detection component includes a sensor, a connector, a contact ball, and a first elastic element. The sensor, the connector, and the contact ball are arranged sequentially along the second direction. A portion of the contact ball passes through the opening of the receiving hole and extends into the first through hole. One end of the first elastic element abuts against the top wall of the receiving hole, and the other end of the first elastic element abuts against the contact ball.

[0014] Furthermore, the sensing element is a conductive sheet, and the connecting element is a conductive rod.

[0015] Furthermore, the sensing element is a strain gauge, and the connecting element is a rod-shaped structure. The end of the rod-shaped structure facing away from the contact ball is spaced apart from the strain gauge or connected to the strain gauge.

[0016] Furthermore, the positioning mechanism includes a second elastic element, one end of which abuts against the first step of the stepped hole, and the other end of which abuts against the third step of the moving rod.

[0017] Furthermore, the second step of the stepped hole has a mounting hole extending along the second direction, the moving rod is constructed in a U-shape, the positioning mechanism includes a distance sensor, the distance sensor is installed in the mounting hole, and the distance sensor is used to measure the distance from the fourth step of the moving rod to the second step of the stepped hole.

[0018] Furthermore, the fourth step of the movable rod is provided with at least two sliding protrusions spaced apart in the circumferential direction, and the sidewall of the stepped hole is provided with a guide plate corresponding to each of the sliding protrusions. The guide plate is provided with a sliding groove extending in the second direction, and the sliding protrusions slide in cooperation with the sliding grooves.

[0019] Furthermore, a stepped groove is provided at one end of the stepped hole opposite to the first through hole, and the shaft detection device includes a stepped cover, which is disposed in the stepped groove.

[0020] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0021] (1) This application uses the first linear drive and the plug gauge to cooperate with the first through hole and the second through hole to perform compliance testing on the crescent groove, ensuring that the crescent groove meets the processing standards, thereby improving the yield of the tested shaft.

[0022] (2) This application uses a positioning mechanism to detect the position of the plug gauge, which can confirm whether the plug gauge passes through the semi-circular groove, thereby ensuring the accuracy of the detection. Attached Figure Description

[0023] Figure 1 This is an assembly drawing of a shaft detection device with a crescent groove provided in an embodiment of the present invention;

[0024] Figure 2 This is an elevation sectional view of the base in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the compliance detection component in an embodiment of the present invention;

[0026] Figure 4 This is a sectional view of the positioning mechanism assembled onto the base in an embodiment of the present invention;

[0027] Figure 5 This is a sectional view of the positioning mechanism in an embodiment of the present invention;

[0028] Figure 6 This is a sectional view of the movable rod in an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the position detection component in an embodiment of the present invention;

[0030] Figure 8 The above are schematic diagrams of the structure of some embodiments of the arrival detection component in this invention.

[0031] Figure 9 This is a schematic diagram of the structure of some other embodiments of the arrival detection component in this invention;

[0032] Figure 10 This is a schematic diagram of the structure of the measured shaft in an embodiment of the present invention.

[0033] The attached figures are labeled as follows:

[0034] 10. Base; 11. First through hole; 12. Second through hole; 13. Stepped hole; 131. First step; 132. Second step; 133. Mounting hole; 134. Guide plate; 135. Stepped groove;

[0035] 20. Compliance testing components; 21. First linear drive component; 22. Plug gauge; 23. Fixing post;

[0036] 30. Positioning mechanism; 31. Moving rod; 311. Connecting hole; 312. Accommodating hole; 313. Third step; 314. Fourth step; 3141. Sliding protrusion; 32. Second linear drive component; 33. Position detection component; 331. Sensing component; 332. Connecting component; 333. Contact ball; 334. First elastic component; 34. Second elastic component; 35. Distance sensor;

[0037] 40. Stepped cover. Detailed Implementation

[0038] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0040] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0041] When used herein, the singular forms "a", "an", and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0042] Reference Figures 1-2 As shown in Figure 10, the present invention provides a technical solution: a shaft detection device with a crescent groove. The shaft detection device includes a base 10 and a compliance detection component 20. The base 10 has a first through hole 11 extending in a first direction and a second through hole 12 extending in a second direction. The first through hole 11 is adapted to the shape of the crescent groove, and the second through hole 12 communicates with the first through hole 11. The compliance detection component 20 includes a first linear drive member 21 and a plug gauge 22. The first linear drive member 21 is disposed opposite to one end of the first through hole 11, and the plug gauge 22 is disposed at the output end of the first linear drive member 21. The plug gauge 22 is adapted to the shape of the first through hole 11.

[0043] For example, the first linear drive member 21 can be a cylinder, hydraulic cylinder, or electric cylinder, etc. When the plug gauge 22 is assembled, the end of the plug gauge 22 away from the first linear drive member 21 is not inserted into or is inserted into the first through hole 11; when the end of the plug gauge 22 away from the first linear drive member 21 is inserted into the first through hole 11, the end of the plug gauge 22 away from the first linear drive member 21 does not pass through the second through hole 12.

[0044] In this embodiment, when the tested shaft is inserted into the second through hole 12, the tested shaft passes through the meniscus groove, causing the first through hole 11 to form a complete through hole. At this time, the first linear drive member 21 pushes the plug gauge 22 to move towards the second through hole 12; if the plug gauge 22 completely passes through the meniscus groove, the surface meniscus groove is compliant; if the plug gauge 22 cannot completely pass through the meniscus groove, the surface meniscus groove is non-compliant. By performing compliance testing on the meniscus groove, it is ensured that the meniscus groove meets the processing standards, thereby improving the yield of the tested shaft.

[0045] Reference Figure 1 As shown, in some embodiments, the compliance testing component 20 includes at least two fixing posts 23, and the first linear drive 21 is fixed to the base 10 by the at least two fixing posts 23.

[0046] In this embodiment, the first linear drive 21 can be integrated with the base 10, thereby reducing the space required for installation.

[0047] Reference Figures 1-2As shown in Figures 4-6, in some embodiments, the base 10 has a stepped hole 13 extending along the second direction and communicating with the first direction, and the stepped hole 13 is located on the side of the second through hole 12 away from the first linear drive member 21. The shaft detection device includes a positioning mechanism 30, which includes a moving rod 31, a second linear drive member 32, and a positioning detection component 33. The moving rod 31 is constructed in a cross shape and is movably disposed in the stepped hole 13. The moving rod 31 has a first end and a second end. The first end has a connecting hole 311 extending toward the second end, and the second end has a receiving hole 312 extending toward the first end. The output end of the second linear drive member 32 is connected to the connecting hole 311, and the positioning detection component 33 is disposed in the receiving hole 312.

[0048] For example, depending on the actual installation space and thrust requirements, the second linear drive 32 can be a miniature electric actuator or a small electric actuator, or it can include a miniature motor or a small motor and a lead screw, etc. When the second linear drive 32 is a miniature electric actuator or a small electric actuator, the connecting hole 311 is a blind hole; when the second linear drive 32 includes a miniature motor or a small motor and a lead screw, the connecting hole 311 is a threaded hole, and the lead screw is threadedly engaged with the threaded hole. The positioning detection component 33 can be a pressure sensor, etc. The first end is the end of the moving rod 32 away from the first through hole 11; the second end is the end of the moving rod 32 close to the second through hole 11.

[0049] In this embodiment, the plug gauge 22 remains stationary after passing through the second through hole 12, and the second linear drive member 32 pushes the moving rod 31 toward the plug gauge 22. When the positioning detection component 33 detects the plug gauge 22, the second linear drive member 32 pulls the moving rod 31 to reset. By detecting the position of the plug gauge 22, it is possible to confirm whether the plug gauge 22 passes through the semi-circular groove, thereby ensuring the accuracy of the detection.

[0050] Reference Figure 5 and 7 As shown in ~9, in some embodiments, the positioning detection component 33 includes a sensor 331, a connector 332, a contact ball 333, and a first elastic element 334. The sensor 331, connector 332, and contact ball 333 are arranged sequentially along the second direction. A portion of the contact ball 333 passes through the opening of the receiving hole 312 and extends into the first through hole 11. One end of the first elastic element 334 abuts against the top wall of the receiving hole 312, and the other end of the first elastic element 334 abuts against the contact ball 333.

[0051] In this embodiment, during the process of confirming the position of the plug gauge 22, after the contact ball 333 abuts against the plug gauge 22, as the moving rod 31 continues to move, the first elastic element 334 deforms under the influence of the force of the contact ball 333. Through the cooperation of the sensing element 331 and the connecting element 332, feedback can be received that the contact ball 333 has abutted against the plug gauge 22 and that the plug gauge 22 has completely passed through the semi-circular groove. After the position of the plug gauge 22 is confirmed, as the moving rod 31 resets, the contact ball 333 moves away from the plug gauge 22, and the first elastic element 334 drives the contact ball 333 and the connecting element 332 to reset.

[0052] Reference Figures 7-8 As shown, in some embodiments, the sensing element 331 is a conductive sheet and the connector 332 is a conductive rod.

[0053] For example, the conductive sheet can be connected to the positive or negative electrode, and the conductive rod can be connected to the negative or positive electrode; that is, when the conductive sheet is connected to the positive electrode, the conductive rod is connected to the negative electrode; when the conductive sheet is connected to the negative electrode, the conductive rod is connected to the positive electrode.

[0054] In this embodiment, when the conductive sheet and the conductive rod are connected, it indicates that the plug gauge 22 has been detected.

[0055] In some embodiments, the surface of the contact ball 333 is covered with an insulating sleeve or made of an insulating material.

[0056] For example, the insulating material can be ceramic or glass, etc.

[0057] Reference Figure 7 and 9 As shown, in some other embodiments, the sensing element 331 is a strain gauge, and the connecting element 332 is a rod-shaped structure. The end of the rod-shaped structure facing away from the contact ball 333 is spaced apart from the strain gauge or connected to the strain gauge.

[0058] For example, one end of the rod-shaped structure facing away from the contact ball 333 has a gap with the strain gauge, and the other end of the rod-shaped structure facing away from the contact ball 333 is connected to the strain gauge. The strain gauge can be a metal foil strain gauge, a metal thin film strain gauge, or a semiconductor strain gauge, etc.

[0059] In this embodiment, when the rod-shaped structure contacts and compresses the strain gauge, the resistance of the strain gauge changes, indicating that the plug gauge 22 has been detected. Furthermore, compared to the rod-shaped structure being directly connected to the strain gauge, a gap between the connecting member 332 and the sensing member 331 reduces false triggering caused by vibrations during the movement of the moving rod 31.

[0060] For example, the distance between the rod-shaped structure and the strain gauge can be 5~10mm.

[0061] Reference Figure 5As shown, in some embodiments, the positioning mechanism 30 includes a second elastic member 34, one end of which abuts against the first step 131 of the stepped hole 13, and the other end of which abuts against the third step 313 of the moving rod 31.

[0062] In this embodiment, when the moving rod 31 moves toward the first through hole 11, the second elastic element 34 can play a buffering and deceleration role to prevent the moving rod 31 from moving too fast.

[0063] Reference Figure 2 and 4 As shown, in some embodiments, the second step 132 of the stepped hole 13 has a mounting hole 133 extending in a second direction, the moving rod 31 is configured in a U-shape, and the positioning mechanism 30 includes a distance sensor 35, which is installed in the mounting hole 133. The distance sensor 35 is used to measure the distance from the fourth step 314 of the moving rod 31 to the second step 132 of the stepped hole 13.

[0064] For example, the model of the distance sensor 35 could be FT 25-RA-60-PN, etc.

[0065] In this embodiment, the distance from the fourth step 314 of the moving rod 31 to the second step 132 of the stepped hole 13 is measured by the distance sensor 35. Firstly, if the positioning detection component 33 fails to detect the plug gauge 22 after the moving rod 31 has moved a preset distance, the second linear drive member 32 can directly reset the moving rod 31. Secondly, when the second linear drive member is damaged, the distance sensor 35 can report an abnormality in the second linear drive member. Thirdly, when the positioning detection component 33 is damaged, the distance sensor 35 can detect whether the plug gauge 22 has completely passed through the semi-lunar groove; that is, when the contact ball 333 abuts against the plug gauge 22, preventing the moving rod 31 from moving further, measuring the distance from the fourth step 314 of the moving rod 31 to the second step 132 of the stepped hole 13 indicates that the plug gauge 22 has completely passed through the semi-lunar groove.

[0066] Reference Figure 2 and 6 As shown, in some embodiments, the fourth step 314 of the moving rod 31 is provided with at least two sliding protrusions 3141 distributed circumferentially, and the sidewall of the stepped hole 13 is provided with a guide plate 134 corresponding to each sliding protrusion 3141. The guide plate 134 is provided with a sliding groove extending in the second direction, and the sliding protrusion 3141 slides in cooperation with the sliding groove.

[0067] In this embodiment, when the moving rod 31 moves, the sliding protrusion 3141 engages with the groove to ensure the stability of the moving rod 31's movement. Additionally, when the second linear drive 32 includes a micro motor or small motor and a lead screw, it can provide resistance to the moving rod 31, preventing the moving rod 31 from rotating with the lead screw.

[0068] Reference Figures 1-2 As shown in Figure 4, in some embodiments, a stepped groove 135 is provided at one end of the stepped hole 13 away from the first through hole 11, and the shaft detection device includes a stepped cover 40, which is disposed in the stepped groove 135.

[0069] For example, the stepped cover 40 and the stepped groove 135 can be a transition fit or connected by fasteners; for example, the fasteners can be bolts or screws.

[0070] In this embodiment, the stepped cover 40 is closed to the stepped groove 135 to prevent dust from entering the stepped hole 13.

[0071] The first elastic element 334 and the second elastic element 34 can be springs or elastic rubber rings, etc.

[0072] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A shaft detection device with a crescent groove, characterized in that, The shaft detection device includes: The base (10) has a first through hole (11) extending in a first direction and a second through hole (12) extending in a second direction. The first through hole (11) is adapted to the shape of the crescent groove, and the second through hole (12) communicates with the first through hole (11). The base (10) has a stepped hole (13) extending in the second direction and communicating with the first direction. The compliance testing component (20) includes a first linear drive (21) and a plug gauge (22). The first linear drive (21) is disposed opposite to one end of the first through hole (11), and the stepped hole (13) is located on the side of the second through hole (12) away from the first linear drive (21). The plug gauge (22) is disposed at the output end of the first linear drive (21), and the shape of the plug gauge (22) is adapted to the first through hole (11). The positioning mechanism (30) includes a moving rod (31), a second linear drive (32), a positioning detection component (33), and a second elastic element (34). The moving rod (31) is constructed in a cross shape and is movably disposed within the stepped hole (13). The moving rod (31) has a first end and a second end. The first end has a connecting hole (311) extending toward the second end, and the second end has a receiving hole (312) extending toward the first end. The output end of the second linear drive (32) is connected to the connecting hole (311). The positioning detection component (33) is disposed within the receiving hole (312) and includes a sensing element (331). The sensor (331), the connector (332), the contact ball (333), and the first elastic element (334) are arranged sequentially along the second direction. A portion of the contact ball (333) passes through the opening of the receiving hole (312) and extends into the first through hole (11). One end of the first elastic element (334) abuts against the top wall of the receiving hole (312), and the other end of the first elastic element (334) abuts against the contact ball (333). One end of the second elastic element (34) abuts against the first step (131) of the stepped hole (13), and the other end of the second elastic element (34) abuts against the third step (313) of the moving rod (31).

2. The shaft detection device with a crescent groove according to claim 1, characterized in that, The compliance testing component (20) includes at least two fixed posts (23), and the first linear drive (21) is fixed to the base (10) by at least two of the fixed posts (23).

3. The shaft detection device with a crescent groove according to claim 1, characterized in that, The sensing element (331) is a conductive sheet, and the connecting element (332) is a conductive rod.

4. The shaft detection device with a crescent groove according to claim 1, characterized in that, The sensing element (331) is a strain gauge, and the connecting element (332) is a rod-shaped structure. The end of the rod-shaped structure facing away from the contact ball (333) is spaced from or connected to the strain gauge.

5. A shaft detection device with a crescent groove according to claim 3 or 4, characterized in that, The second step (132) of the stepped hole (13) has a mounting hole (133) extending along the second direction. The moving rod (31) is constructed in a U-shape. The positioning mechanism (30) includes a distance sensor (35), which is installed in the mounting hole (133). The distance sensor (35) is used to measure the distance from the fourth step (314) of the moving rod (31) to the second step (132) of the stepped hole (13).

6. A shaft detection device with a crescent groove according to claim 5, characterized in that, The fourth step (314) of the moving rod (31) is provided with at least two sliding protrusions (3141) distributed circumferentially. The sidewall of the stepped hole (13) is provided with a guide plate (134) corresponding to each sliding protrusion (3141). The guide plate (134) is provided with a sliding groove extending in the second direction. The sliding protrusion (3141) slides in cooperation with the sliding groove.

7. A shaft detection device with a crescent groove according to claim 6, characterized in that, The stepped hole (13) has a stepped groove (135) at one end away from the first through hole (11), and the shaft detection device includes a stepped cover (40), which is located in the stepped groove (135).

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