Lead screw nut pair detection device
By designing a screw nut sub-detection device including a placement seat, a drive camera mechanism and a torque testing mechanism, the problems of inconvenience and low accuracy in the prior art are solved, and accurate detection and efficient testing of screw torque are achieved.
Patent Information
- Application Number
- CN202421218978.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The torque test of existing screw nut pairs is inconvenient, the test accuracy is low, and it is difficult to accurately detect whether the movement of the nut is deviated.
A detection device including a rack, a No. 1 placing seat, a No. 2 placing seat, a drive camera mechanism and a torque testing mechanism are designed. The structural design of the No. 1 and No. 2 placement seats is convenient for the placement of the screw; the driving camera mechanism monitors the linearity of the nut's movement path; the torque testing mechanism tests the pre-pressure torque of the nut through the tensile sensor.
Accurate testing of screw torque is achieved, testing accuracy and efficiency are improved, and the consistency between the test results and actual conditions is ensured.
Smart Images
Figure CN222882442U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of screw rod detection, in particular to a screw rod nut pair detection device. Background Art
[0002] The screw-nut pair is a commonly used linear drive mechanism. When in use, it is connected to the driven workpiece through the nut. The screw is used to rotate the drive nut to make linear motion along the screw axis, driving the workpiece to move synchronously. Therefore, it is necessary to perform a torque test on the nut before the screw-nut pair leaves the factory. The existing test device is not convenient for positioning the screw, and it is not easy to find whether the movement of the nut is deviated during the test, resulting in the test result being inconsistent with the actual situation.
[0003] In view of this, it is necessary to provide a screw nut pair detection device. Summary of the invention
[0004] The screw rod and nut pair detection device provided by the utility model effectively solves the problems of inconvenience and low test accuracy of the existing screw rod and nut pair torque test.
[0005] The technical solution adopted by the utility model is
[0006] A screw-nut pair detection device includes a frame, and also includes a No. 1 placement seat and a No. 2 placement seat arranged on the frame, a drive camera mechanism arranged on the frame for driving the screw to rotate, and a torque testing mechanism arranged on the frame. The No. 1 placement seat and the No. 2 placement seat have the same structure and are arranged correspondingly. The No. 1 placement seat includes a seat body fixedly arranged on the frame, a No. 1 ball bearing and a No. 2 ball bearing arranged on the seat body, the spacing between the No. 1 ball bearing and the No. 2 ball bearing is smaller than the diameter of the screw to be tested, and the No. 1 ball bearing and the No. 2 ball bearing respectively contact the two sides of the screw.
[0007] Furthermore, the No. 1 placement seat and the No. 2 placement seat are arranged correspondingly along the X direction, and the driving camera mechanism includes a No. 1 linear module arranged on the frame along the Y direction, a No. 1 mounting plate arranged at the output end of the No. 1 linear module, a No. 2 linear module arranged on the No. 1 mounting plate along the Z direction, a No. 1 motor arranged at the output end of the No. 2 linear module along the X direction, a clamp arranged on the output shaft of the No. 1 motor, and a camera.
[0008] Furthermore, the torque testing mechanism includes a No. 1 linear guide rail arranged on the frame along the X direction, a sliding plate slidably arranged on the No. 1 linear guide rail, a No. 6 linear module arranged on the frame along the X direction for driving the sliding plate to move along the No. 1 linear guide rail, a No. 4 linear module arranged on the sliding plate along the Y direction, a No. 2 mounting plate arranged at the output end of the No. 4 linear module, a No. 5 linear module arranged on the No. 2 mounting plate along the Z direction, a tension sensor arranged at the output end of the No. 5 linear module, and an L-shaped metal rod arranged at the test end of the tension sensor.
[0009] Furthermore, the frame is provided with a No. 1 mounting slot for mounting a surface torque test mechanism and a No. 2 mounting slot for mounting a driving camera mechanism.
[0010] Furthermore, the seat body includes a No. 1 rod, a No. 2 rod and a fixed seat fixed on the frame, the fixed seat is provided with an empty groove, the No. 1 rod and the No. 2 rod are arranged in the empty groove, the inner ring of the No. 1 ball bearing is fixedly connected to the No. 1 rod, and the inner ring of the No. 2 ball bearing is fixedly connected to the No. 2 rod.
[0011] Beneficial effects of the utility model: the structural design of the No. 1 placement seat and the No. 2 placement seat can facilitate the placement of the screw rod, and the driving camera mechanism can timely monitor whether the movement path of the nut is linear, which can realize accurate testing of the screw rod torque and ensure test accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 An overall schematic diagram of a screw-nut pair detection device provided in an embodiment of the present application.
[0013] Figure 2 A schematic diagram of a No. 1 placement seat of a screw-nut pair detection device provided in an embodiment of the present application.
[0014] Figure 3 A schematic diagram of a drive camera mechanism of a screw-nut pair detection device provided in an embodiment of the present application.
[0015] Figure 4 A schematic diagram of a torque testing mechanism of a screw-nut pair detection device provided in an embodiment of the present application.
[0016] The markings in the figure are: 1. Rack; 2. No. 1 placement seat; 3. No. 2 placement seat; 4. Driving camera mechanism; 5. Torque testing mechanism; 21. Seat body; 22. No. 1 ball bearing; 23. No. 2 ball bearing; 41. No. 1 linear module; 42. No. 1 mounting plate; 43. No. 2 linear module; 44. No. 1 motor; 45. Gripper; 46. Camera; 51. No. 1 linear guide; 52. Sliding plate; 53. No. 6 linear module; 54. No. 4 linear module; 55. No. 2 mounting plate; 56. No. 5 linear module; 57. Tension sensor; 58. L-shaped metal rod; 211. No. 1 rod; 212. No. 2 rod; 213. Fixed seat; 6. Screw; 7. Nut. DETAILED DESCRIPTION
[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.
[0018] like Figure 1 and Figure 2 As shown, the screw 6 nut 7 pair detection device provided in the embodiment of the present application includes a frame 1, and also includes a No. 1 placing seat 2 and a No. 2 placing seat 3 arranged on the frame 1, a driving camera mechanism 4 arranged on the frame 1 for driving the screw 6 to rotate, and a torque testing mechanism 5 arranged on the frame 1, the No. 1 placing seat 2 and the No. 2 placing seat 3 have the same structure and are arranged correspondingly, the No. 1 placing seat 2 includes a seat body 21 fixedly arranged on the frame 1, a No. 1 ball bearing 22 and a No. 2 ball bearing 23 arranged on the seat body 21, the spacing between the No. 1 ball bearing 22 and the No. 2 ball bearing 23 is smaller than the diameter of the screw 6 to be tested, and the No. 1 ball bearing 22 and the No. 2 ball bearing 23 contact the two sides of the screw 6 respectively.
[0019] In actual use, the two ends of the screw rod 6 to be tested are placed on the No. 1 placement seat 2 and the No. 2 placement seat 3 respectively, so that the two sides of the screw rod 6 are supported by the No. 1 ball bearing 22 and the No. 2 ball bearing 23, and then the camera mechanism 4 is driven to detect whether the hole position of the nut 7 of the screw rod 6 to be tested is vertical, and whether the screw rod 6 to be tested is parallel to the running direction of the torque testing mechanism 5. The camera mechanism 4 is driven to clamp one end of the screw rod 6 to be tested and drive the screw rod 6 to rotate, and the nut 7 makes linear motion along the extension direction of the screw rod 6, and then moves synchronously after being connected with the nut 7 through the torque testing mechanism 5. When the nut 7 makes linear motion, the pre-compression torque of the nut 7 is tested by the torque testing mechanism 5, and it is qualified when the tested pre-compression torque is within the preset range.
[0020] In the above design, the structural design of the No. 1 placement seat 2 and the No. 2 placement seat 3 can facilitate the placement of the screw rod 6, and the driving camera mechanism 4 can timely monitor whether the movement path of the nut 7 is linear, which can realize accurate testing of the torque of the screw rod 6 and ensure the test accuracy and efficiency.
[0021] Specifically: Figure 1 and Figure 3 As shown, the No. 1 placement seat 2 and the No. 2 placement seat 3 are arranged correspondingly along the X direction, and the driving camera mechanism 4 includes a No. 1 linear module 41 arranged on the frame 1 along the Y direction, a No. 1 mounting plate 42 arranged at the output end of the No. 1 linear module 41, a No. 2 linear module 43 arranged on the No. 1 mounting plate 42 along the Z direction, a No. 1 motor 44 arranged at the output end of the No. 2 linear module 43 along the X direction, a clamp 45 arranged on the output shaft of the No. 1 motor 44, and a camera 46.
[0022] In actual use, the camera 46 is used to detect whether the position of the nut 7 mounting hole of the screw 6 is consistent with the extension direction of the screw 6, and at the same time, the torque test mechanism 5 is detected to detect whether the movement direction of the torque test mechanism 5 is parallel to the movement direction of the nut 7 when the torque test mechanism 5 follows the movement of the nut 7. The No. 1 linear module 41 and the No. 2 linear module 43 drive the clamping jaw 45 to move to the clamping position, and manually extend the end of the screw 6 into the clamping jaw 45, and the end of the screw 6 is clamped by the clamping jaw 45. After the No. 1 motor 44 drives the clamping jaw 45 to rotate, it drives the screw 6 to rotate, so that the nut 7 moves along the axial direction of the screw 6.
[0023] In the above-mentioned design, the structural design and specific implementation method of the driving camera mechanism 4 can effectively realize the rapid clamping and rotational driving of the screw rod 6 .
[0024] Specifically: Figure 1 and Figure 4 As shown, the torque testing mechanism 5 includes a No. 1 linear guide 51 arranged on the frame 1 along the X direction, a sliding plate 52 slidably arranged on the No. 1 linear guide 51, a No. 6 linear module 53 arranged on the frame 1 along the X direction for driving the sliding plate 52 to move along the No. 1 linear guide 51, a No. 4 linear module 54 arranged on the sliding plate 52 along the Y direction, a No. 2 mounting plate 55 arranged at the output end of the No. 4 linear module 54, a No. 5 linear module 56 arranged on the No. 2 mounting plate 55 along the Z direction, a tension sensor 57 arranged at the output end of the No. 5 linear module 56, and an L-shaped metal rod 58 arranged at the test end of the tension sensor 57.
[0025] In actual use, the tension sensor 57 is driven to move to the starting position to be detected through the No. 4 linear module 54 and the No. 5 linear module 56, and the L-shaped metal rod 58 is inserted into the mounting hole of the nut 7. Then, when the screw 6 rotates, the nut 7 moves. During the movement, the No. 6 linear module 53 drives the sliding plate 52 to move synchronously.
[0026] In the above design, the structural design and specific implementation of the torque testing mechanism 5 can effectively realize the rotation drive and video monitoring of the screw rod 6.
[0027] Specifically, the frame 1 is provided with a first installation slot for installing the surface torque test mechanism 5 and a second installation slot for installing the driving camera mechanism 4 .
[0028] In actual use, the torque testing mechanism 5 is installed through the No. 1 installation slot, and the driving camera mechanism 4 is installed through the No. 2 installation slot.
[0029] In the above design, the structural design and specific implementation method of the No. 1 installation slot and the No. 2 installation slot can effectively realize the installation of the torque testing mechanism 5 and the driving camera mechanism 4.
[0030] Specifically: Figure 2 As shown, the seat body 21 includes a rod No. 1 211, a rod No. 212 and a fixed seat 213 fixedly arranged on the frame 1, and an empty groove is arranged on the fixed seat 213, and the rod No. 1 211 and the rod No. 2 212 are arranged in the empty groove, the inner ring of the No. 1 ball bearing 22 is fixedly connected to the No. 1 rod 211, and the inner ring of the No. 2 ball bearing 23 is fixedly connected to the No. 2 rod 212.
[0031] In actual use, when the screw rod 6 is driven to rotate, the first ball bearing 22 and the second ball bearing 23 rotate around the first rod 211 and the second rod 212 respectively.
[0032] In the above design, the structural design of the seat body 21 and the specific implementation method effectively ensure the installation of the No. 1 ball bearing 22 and the No. 2 ball bearing 23.
[0033] To further explain in detail, it should be understood that the above is only a specific embodiment of the present invention and is 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 screw rod (6) nut (7) pair detection device, comprising a frame (1), characterized in that: The invention also comprises a No. 1 placement seat (2) and a No. 2 placement seat (3) arranged on the frame (1), a driving camera mechanism (4) arranged on the frame (1) for driving the screw rod (6) to rotate, and a torque testing mechanism (5) arranged on the frame (1); the No. 1 placement seat (2) and the No. 2 placement seat (3) have the same structure and are arranged correspondingly; the No. 1 placement seat (2) comprises a seat body (21) fixedly arranged on the frame (1), a No. 1 ball bearing (22) and a No. 2 ball bearing (23) arranged on the seat body (21); the spacing between the No. 1 ball bearing (22) and the No. 2 ball bearing (23) is smaller than the diameter of the screw rod (6) to be tested; the No. 1 ball bearing (22) and the No. 2 ball bearing (23) respectively contact the two sides of the screw rod (6).
2. The screw rod (6) and nut (7) pair detection device according to claim 1, characterized in that: The No. 1 placement seat (2) and the No. 2 placement seat (3) are arranged correspondingly along the X direction, and the driving camera mechanism (4) comprises a No. 1 linear module (41) arranged on the frame (1) along the Y direction, a No. 1 mounting plate (42) arranged at the output end of the No. 1 linear module (41), a No. 2 linear module (43) arranged on the No. 1 mounting plate (42) along the Z direction, a No. 1 motor (44) arranged at the output end of the No. 2 linear module (43) along the X direction, a clamping claw (45) arranged on the output shaft of the No. 1 motor (44), and a camera (46).
3. The screw rod (6) and nut (7) pair detection device according to claim 1, characterized in that: The torque testing mechanism (5) comprises a first linear guide rail (51) arranged on a frame (1) along the X direction, a sliding plate (52) slidably arranged on the first linear guide rail (51), a sixth linear module (53) arranged on the frame (1) along the X direction for driving the sliding plate (52) to move along the first linear guide rail (51), a fourth linear module (54) arranged on the sliding plate (52) along the Y direction, a second mounting plate (55) arranged at the output end of the fourth linear module (54), a fifth linear module (56) arranged on the second mounting plate (55) along the Z direction, a tension sensor (57) arranged at the output end of the fifth linear module (56), and an L-shaped metal rod (58) arranged at the testing end of the tension sensor (57).
4. The screw rod (6) and nut (7) pair detection device according to claim 1, characterized in that: The frame (1) is provided with a first installation slot for installing a surface torque test mechanism (5) and a second installation slot for installing a driving camera mechanism (4).
5. The screw rod (6) nut (7) pair detection device according to claim 1, characterized in that: The seat body (21) comprises a first rod (211), a second rod (212) and a fixed seat (213) fixedly arranged on the frame (1); an empty slot is arranged on the fixed seat (213); the first rod (211) and the second rod (212) are arranged in the empty slot; the inner ring of the first ball bearing (22) is fixedly connected to the first rod (211); and the inner ring of the second ball bearing (23) is fixedly connected to the second rod (212).