Shaft detection device with half-moon groove

Abstract

The invention relates to a shaft detection device with a half-moon groove, the shaft detection device comprises a base and a compliance detection assembly, the base is provided with a first through hole extending along a first direction and a second through hole extending along a second direction, the first through hole is matched with the half-moon groove in shape, and the second through hole is communicated with the first through hole; the compliance detection assembly comprises a first linear driving part and a plug gauge, the first linear driving part is arranged opposite to one end of the first through hole, the plug gauge is arranged at the output end of the first linear driving part, and the plug gauge is matched with the first through hole in shape. The first linear driving piece and the plug gauge are matched with the first through hole and the second through hole, compliance detection can be carried out on the half-moon groove, it is guaranteed that the half-moon groove meets the machining standard, and therefore the yield of the detected shaft is increased.

Description

Technical Field

[0001] The invention relates to the technical field of shaft component detection, and in particular to a shaft detection device with a semi-lunar groove. Background Art

[0002] The input shaft of a car refers to the shaft connecting the engine and the transmission. It transfers the power of the engine to the transmission and allows the driver to control the speed and speed of the vehicle through the gear lever.

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

[0004] The input shaft has a half-moon groove, and currently the dimensions (such as the radius) of the half-moon groove are measured manually using a handheld measuring tool (such as a vernier caliper). However, the manual measurement method is not only cumbersome, but also causes the operator's attention to decrease during long-term measurement, resulting in frequent measurement errors, thereby 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-lunar groove, aiming to solve the problem of high error rate in the existing manual measurement of the semi-lunar groove dimensions of the input shaft.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: A shaft detection device with a semi-lunar groove, the shaft detection device comprising: A base having a first through hole extending in a first direction and a second through hole extending in a second direction, wherein the first through hole matches the shape of the semilunar groove, and the second through hole is connected to the first through hole; The compliance detection component includes a first linear drive component and a plug gauge, wherein the first linear drive component is arranged opposite to one end of the first through hole, the plug gauge is arranged at the output end of the first linear drive component, and the plug gauge is adapted to the shape of the first through hole.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the compliance detection component includes at least two fixing columns, and the first linear drive member is fixed to the base through at least two of the fixing columns.

[0009] Furthermore, a stepped hole extending along the second direction and connected with the first direction is provided on the base, and the stepped hole is located on the side of the second through hole away from the first linear drive member, the axis detection device includes a positioning mechanism, the positioning mechanism includes a moving rod, a second linear drive member and an in-position detection component, the moving rod is constructed in a cross shape, the moving rod is movably arranged 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, 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 in-position detection component is arranged in the receiving hole.

[0010] Furthermore, the in-place detection component includes a sensing member, a connecting member, a contact ball and a first elastic member, and the sensing member, the connecting member and the contact ball are arranged in sequence along the second direction, a part of the contact ball passes through the opening of the accommodating hole and extends into the first through hole, one end of the first elastic member abuts against the top wall of the accommodating hole, and the other end of the first elastic member abuts against the contact ball.

[0011] Furthermore, the induction member is a conductive sheet, and the connecting member is a conductive rod.

[0012] Furthermore, the sensing element is a strain gauge, the connecting element is a rod-shaped structure, and an end of the rod-shaped structure away from the contact ball is spaced apart from the strain gauge or is connected to the strain gauge.

[0013] Furthermore, the positioning mechanism includes a second elastic member, one end of the second elastic member abuts against the first step of the stepped hole, and the other end of the second elastic member abuts against the third step of the moving rod.

[0014] Furthermore, the second step of the stepped hole is provided with a mounting hole extending along the second direction, the moving rod is constructed in a stem shape, and the positioning mechanism includes a distance sensor, which 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.

[0015] Furthermore, the fourth step of the movable rod is provided with at least two sliding protrusions spaced circumferentially, the side wall of the stepped hole is provided with a guide plate corresponding to each sliding protrusion, the guide plate is provided with a sliding groove extending along the second direction, and the sliding protrusion is slidably matched with the sliding groove.

[0016] Furthermore, a stepped groove is formed at one end of the stepped hole away from the first through hole, and the shaft detection device comprises a stepped cover, which is arranged in the stepped groove.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: (1) In the present application, the first linear drive member and the plug gauge cooperate with the first through hole and the second through hole to perform compliance detection on the semi-lunar groove to ensure that the semi-lunar groove meets the processing standards, thereby improving the yield rate of the tested shaft.

[0018] (2) The present application detects the position of the plug gauge through a positioning mechanism, and can confirm whether the plug gauge passes through the semi-lunar groove, thereby ensuring the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a general assembly diagram of a shaft detection device with a half-moon groove provided in an embodiment of the present invention; Figure 2 is a vertical cross-sectional view of a base in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a compliance detection component in an embodiment of the present invention; Figure 4 It is a vertical cross-sectional view of the positioning mechanism assembled to the base in the embodiment of the present invention; Figure 5 It is a vertical cross-sectional view of the positioning mechanism in the embodiment of the present invention; Figure 6 is a vertical cross-sectional view of a moving rod in an embodiment of the present invention; Figure 7 It is a structural schematic diagram of an in-place detection component in an embodiment of the present invention; Figure 8 It is a schematic diagram of the structure of some embodiments of the in-place detection component in the embodiments of the present invention; Fig. 9 It is a structural schematic diagram of other embodiments of the in-place detection component in the embodiment of the present invention; Fig.10 Schematic diagram of the structure of the measured shaft in an embodiment of the present invention.

[0020] The reference numerals are as follows: 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; 20. Compliance detection component; 21. First linear drive member; 22. Plug gauge; 23. Fixed column; 30. Positioning mechanism; 31. Moving rod; 311. Connecting hole; 312. Accommodating hole; 313. Third step; 314. Fourth step; 3141. Sliding protrusion; 32. Second linear driving member; 33. In-position detection assembly; 331. Inductive member; 332. Connecting member; 333. Contact ball; 334. First elastic member; 34. Second elastic member; 35. Distance sensor; 40. Step cover. DETAILED DESCRIPTION

[0021] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0022] 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 belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0023] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0024] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0025] Reference Figure 1~2As shown in Figure 10, the present invention provides a technical solution: an axis detection device with a semi-lunar groove, the axis detection device includes a base 10 and a compliance detection component 20, the base 10 has a first through hole 11 extending along a first direction and a second through hole 12 extending along a second direction, the first through hole 11 is adapted to the shape of the semi-lunar groove, and the second through hole 12 is connected to 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 arranged opposite to one end of the first through hole 11, the plug gauge 22 is arranged at the output end of the first linear drive member 21, and the plug gauge 22 is adapted to the shape of the first through hole 11.

[0026] Exemplarily, the first linear drive member 21 may be a cylinder, a hydraulic cylinder, or an 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.

[0027] In this embodiment, when the measured shaft is inserted into the second through hole 12, the measured shaft passes through the semi-lunar groove to form a completed through hole in the first through hole 11. At this time, the first linear drive member 21 pushes the plug gauge 22 to move in the direction of the second through hole 12; if the plug gauge 22 completely passes through the semi-lunar groove, the surface semi-lunar groove is compliant; if the plug gauge 22 cannot completely pass through the semi-lunar groove, the surface semi-lunar groove is not compliant. In this way, by performing compliance detection on the semi-lunar groove, it is ensured that the semi-lunar groove meets the processing standards, thereby improving the yield rate of the measured shaft.

[0028] Reference Figure 1 As shown, in some embodiments, the compliance detection assembly 20 includes at least two fixing columns 23 , and the first linear drive member 21 is fixed to the base 10 via the at least two fixing columns 23 .

[0029] In this embodiment, the first linear driving member 21 and the base 10 can be integrated into one body, thereby reducing the installation space.

[0030] Reference Figure 1~2As shown in Figures 4 to 6, in some embodiments, a stepped hole 13 extending along the second direction and connected to the first direction is provided on the base 10, 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 axis detection device includes a positioning mechanism 30, and the positioning mechanism 30 includes a moving rod 31, a second linear drive member 32 and an in-position detection component 33. The moving rod 31 is constructed in a cross shape, and the moving rod 31 is movably disposed in the stepped hole 13. The moving rod 31 has a first end and a second end, and the first end is provided with a connecting hole 311 extending toward the second end, and the second end is provided with 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 in-position detection component 33 is disposed in the receiving hole 312.

[0031] Exemplarily, according to the actual installation space and thrust requirements, the second linear drive member 32 may be a micro electric push rod or a small electric push rod, or may include a micro motor or a small motor and a screw rod; when the second linear drive member 32 is a micro electric push rod or a small electric push rod, the connection hole 311 is a blind hole; when the second linear drive member 32 includes a micro motor or a small motor and a screw rod, the connection hole 311 is a screw hole, and the screw rod and the screw hole are threadedly matched. The in-position detection component 33 may 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.

[0032] In this embodiment, the plug gauge 22 stays still after passing through the second through hole 12, and the second linear drive member 32 pushes the moving rod 31 to move toward the plug gauge 22. When the in-position detection assembly 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 can be confirmed whether the plug gauge 22 passes through the semi-lunar groove, thereby ensuring the accuracy of the detection.

[0033] Reference Figure 5 and 7 As shown in ~9, in some embodiments, the in-position detection component 33 includes a sensing member 331, a connecting member 332, a contact ball 333 and a first elastic member 334, and the sensing member 331, the connecting member 332 and the contact ball 333 are arranged in sequence along the second direction, a part of the contact ball 333 passes through the opening of the accommodating hole 312 and extends into the first through hole 11, one end of the first elastic member 334 abuts against the top wall of the accommodating hole 312, and the other end of the first elastic member 334 abuts against the contact ball 333.

[0034] 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 member 334 is deformed by the force of the contact ball 333. Through the cooperation between the sensing member 331 and the connecting member 332, feedback can be given that the contact ball 333 has abutted against the plug gauge 22 and the plug gauge 22 has completely passed through the semi-lunar groove. After the position of the plug gauge 22 is confirmed, as the moving rod 31 is reset, the contact ball 333 moves away from the plug gauge 22, and the first elastic member 334 drives the contact ball 333 and the connecting member 332 to reset.

[0035] Reference Figure 7-8 As shown, in some embodiments, the induction member 331 is a conductive sheet, and the connecting member 332 is a conductive rod.

[0036] Exemplarily, the conductive sheet can be connected to the positive electrode or the negative electrode, and the conductive rod can be connected to the negative electrode or the 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.

[0037] In this embodiment, when the conductive sheet and the conductive rod are connected, it indicates that the plug gauge 22 is detected.

[0038] In some embodiments, the surface of the contact ball 333 is wrapped with an insulating sleeve or made of insulating material.

[0039] For example, the insulating material may be ceramic or glass.

[0040] Reference Figure 7 and 9 As shown, in other embodiments, the sensing member 331 is a strain gauge, the connecting member 332 is a rod-shaped structure, and one end of the rod-shaped structure away from the contact ball 333 is spaced apart from the strain gauge or is connected to the strain gauge.

[0041] For example, there is a gap between the end of the rod-like structure away from the contact ball 333 and the strain gauge, and the end of the rod-like structure away from the contact ball 333 is connected to the strain gauge. The strain gauge can be a metal foil strain gauge, a metal film strain gauge, a semiconductor strain gauge, etc.

[0042] In this embodiment, when the rod-shaped structure contacts and squeezes the strain gauge, the resistance of the strain gauge changes, indicating that the plug gauge 22 is detected. In addition, when there is a gap between the rod-shaped structure and the strain gauge, compared with the rod-shaped structure connected to the strain gauge, the gap between the connecting member 332 and the sensing member 331 can reduce false touches caused by vibration when the moving rod 31 moves.

[0043] For example, the distance between the rod-shaped structure and the strain gauge may be 5 to 10 mm.

[0044] Reference Figure 5As shown, in some embodiments, the positioning mechanism 30 includes a second elastic member 34 , one end of the second elastic member 34 abuts against the first step 131 of the stepped hole 13 , and the other end of the second elastic member 34 abuts against the third step 313 of the moving rod 31 .

[0045] In this embodiment, when the moving rod 31 moves toward the first through hole 11 , the second elastic member 34 can play a buffering and decelerating role to prevent the moving rod 31 from moving too fast.

[0046] Reference Figure 2 and 4 As shown, in some embodiments, the second step 132 of the stepped hole 13 is provided with a mounting hole 133 extending along the second direction, the moving rod 31 is constructed in a stem 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.

[0047] For example, the model of the distance sensor 35 may be FT 25-RA-60-PN or the like.

[0048] 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. The first is that after the moving rod 31 moves to the preset distance, when the in-place detection component 33 still fails to detect the plug gauge 22, the second linear drive member 32 can directly drive the moving rod 31 to reset. The second is that when the second linear moving member is damaged, the distance sensor 35 can feedback that the second linear moving member is abnormal. The third is that when the in-place detection component 33 is damaged, the distance sensor 35 can be responsible for detecting 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 so that the moving rod 31 can no longer move, at this time, the distance from the fourth step 314 of the moving rod 31 to the second step 132 of the stepped hole 13 is measured, indicating that the plug gauge 22 has completely passed through the semi-lunar groove.

[0049] Reference Figure 2 and 6 As shown, in some embodiments, the fourth step 314 of the movable rod 31 is provided with at least two sliding protrusions 3141 distributed along the circumferential direction, and a guide plate 134 is provided on the side wall of the stepped hole 13 corresponding to each sliding protrusion 3141, and a sliding groove extending along the second direction is provided on the guide plate 134, and the sliding protrusion 3141 slides in cooperation with the sliding groove.

[0050] In this embodiment, when the moving rod 31 moves, the sliding protrusion 3141 cooperates with the slide groove to ensure the stability of the movement of the moving rod 31. In addition, when the second linear drive member 32 includes a micro motor or a small motor and a screw rod, it can provide resistance for the moving rod 31 to prevent the moving rod 31 from rotating with the screw rod.

[0051] Reference Figure 1~2 As shown in FIG. 4 , in some embodiments, a stepped groove 135 is formed 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 .

[0052] Exemplarily, the step cover 40 and the step groove 135 may be transitionally matched, or may be connected by fasteners, for example, the fasteners may be bolts or screws.

[0053] In this embodiment, the step cover 40 covers the step groove 135 to prevent dust from entering the step hole 13 .

[0054] As mentioned above, the first elastic member 334 and the second elastic member 34 may be springs or elastic rubber rings.

[0055] The above are only 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 in the protection scope of the present invention.

Claims

1. A shaft detection device having a semi-lunar groove, characterized in that: The shaft detection device comprises: A base (10) having a first through hole (11) extending in a first direction and a second through hole (12) extending in a second direction, wherein the first through hole (11) is adapted to the shape of the semilunar groove, and the second through hole (12) is connected to the first through hole (11); The compliance detection component (20) comprises a first linear driving component (21) and a plug gauge (22), wherein the first linear driving component (21) is arranged opposite to one end of the first through hole (11), and the plug gauge (22) is arranged at the output end of the first linear driving component (21), and the plug gauge (22) is adapted to the shape of the first through hole (11).

2. The shaft detection device with a semi-lunar groove according to claim 1, characterized in that: The compliance detection component (20) comprises at least two fixing columns (23), and the first linear drive member (21) is fixed to the base (10) via the at least two fixing columns (23).

3. The shaft detection device with a semi-lunar groove according to claim 1, characterized in that: The base (10) is provided with 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 axis detection device comprises a positioning mechanism (30), the positioning mechanism (30) comprises a moving rod (31), a second linear drive member (32) and an in-position detection component (33), the moving rod (31) is constructed in a cross shape, the moving rod (31) is movably arranged in the stepped hole (13), the moving rod (31) has a first end and a second end, the first end is provided with a connecting hole (311) extending toward the second end, the second end is provided with 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 in-position detection component (33) is arranged in the receiving hole (312).

4. The shaft detection device with a semi-lunar groove according to claim 3, characterized in that: The in-position detection component (33) comprises a sensing member (331), a connecting member (332), a contact ball (333) and a first elastic member (334); the sensing member (331), the connecting member (332) and the contact ball (333) are arranged in sequence along the second direction; a portion of the contact ball (333) passes through the opening of the accommodating hole (312) and extends into the first through hole (11); one end of the first elastic member (334) abuts against the top wall of the accommodating hole (312); and the other end of the first elastic member (334) abuts against the contact ball (333).

5. The shaft detection device with a semi-lunar groove according to claim 4, characterized in that: The induction component (331) is a conductive sheet, and the connecting component (332) is a conductive rod.

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

7. The shaft detection device with a semi-lunar groove according to claim 3, characterized in that: The positioning mechanism (30) comprises a second elastic member (34), one end of the second elastic member (34) abuts against a first step (131) of the stepped hole (13), and the other end of the second elastic member (34) abuts against a third step (313) of the moving rod (31).

8. A shaft detection device with a semi-lunar groove according to any one of claims 3 to 7, characterized in that: The second step (132) of the stepped hole (13) is provided with a mounting hole (133) extending along the second direction; the moving rod (31) is constructed in a stem shape; the positioning mechanism (30) comprises a distance sensor (35); the distance sensor (35) 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).

9. The shaft detection device with a semi-lunar groove according to claim 8, characterized in that: The fourth step (314) of the movable rod (31) is provided with at least two sliding protrusions (3141) spaced apart along the circumferential direction, and a guide plate (134) is provided on the side wall of the stepped hole (13) corresponding to each of the sliding protrusions (3141), and a sliding groove extending along the second direction is provided on the guide plate (134), and the sliding protrusion (3141) is slidably matched with the sliding groove.

10. The shaft detection device with a semi-lunar groove according to claim 3, characterized in that: 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 comprises a stepped cover (40), wherein the stepped cover (40) is arranged in the stepped groove (135).

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