Screw rod torque measuring tool

Abstract

The utility model relates to a lead screw torque measuring tool, which is applied to the field of measuring tools and comprises a base, a lead screw to be detected is rotatably connected to the base, a workbench is arranged on a nut of the lead screw, a driving mechanism for driving the lead screw to rotate is arranged on the base, and a measuring mechanism for detecting whether the workbench moves or not is arranged on the base. And a detection mechanism for detecting the starting torque of the screw rod is arranged between the output end of the driving mechanism and the screw rod. The device has the technical effects that the labor cost is reduced, the problems that the movement of the workbench is observed by naked eyes during manual measurement and data reading is uncertain are solved, the possibility that the error of the measured starting torque is large due to manual operation errors is reduced, and the accuracy of measuring the starting torque is improved.

Description

Technical Field

[0001] The present application relates to the technical field of tooling, and in particular to a screw torque measurement tooling. Background Art

[0002] The lead screw linear module is a linear motion device based on the lead screw transmission principle. It has the advantages of high precision, high efficiency, and high reliability. It is widely used in automated production lines and precision machinery fields.

[0003] During the production process of the screw linear module, an excessively high starting torque of the screw may indicate that the system has problems such as excessive friction, poor lubrication, excessive load or damage to the transmission components. Therefore, measuring the starting torque of the screw linear module is of great significance to ensure the normal operation and performance optimization of the mechanical system. At present, the starting torque measurement adopts manual rotation of the torque meter, and the starting torque is measured by observing the value of the torque meter when the workbench of the screw linear module moves.

[0004] The above-mentioned method of measuring the starting torque by manually rotating the torque meter results in different measurement results from person to person. Manual operation may cause large measurement errors due to operational errors, thereby affecting the accuracy of measuring the starting torque of the screw linear module. Summary of the invention

[0005] In order to help solve the problem of large measurement errors in manual measurement of starting torque, the present application provides a screw torque measurement tool, which adopts the following technical solution: it includes a base, the screw to be detected is rotatably connected to the base, the workbench is set on the nut of the screw, the base is provided with a driving mechanism for driving the screw to rotate, the base is provided with a measuring mechanism for detecting whether the workbench moves, and a detection mechanism for detecting the starting torque of the screw is provided between the output end of the driving mechanism and the screw.

[0006] In a specific possible implementation scheme, the detection mechanism includes a torque meter arranged on a base, the output end of the drive mechanism is coaxially fixedly connected to the detection axis of the torque meter, and the end of the detection axis of the torque meter away from the drive mechanism is coaxially fixedly connected to the screw to be detected.

[0007] In a specific possible implementation manner, the driving mechanism includes a driving motor disposed on a base, and an output end of the driving motor is coaxially and fixedly connected to a detection shaft of the torque meter.

[0008] In a specific implementation scheme, the output end of the drive motor is coaxially fixedly connected to the detection shaft of the torque meter through a first coupling, and the end of the detection shaft of the torque meter away from the drive motor is coaxially fixedly connected to the screw to be detected through a second coupling.

[0009] In a specific possible implementation manner, the measuring mechanism includes a grating sensor arranged on a base, and the workbench is arranged at a detection end of the grating sensor.

[0010] In a specific possible implementation mode, a guide rail arranged parallel to the screw rod is provided on the base, a slider matching the guide rail is slidably connected to the guide rail, and the workbench is arranged on the slider.

[0011] In a specific possible implementation scheme, an anti-collision block is provided on the base; when the nut moves to one end of the screw rod close to the anti-collision block, the anti-collision block contacts the workbench.

[0012] In a specific possible implementation manner, a stabilizing seat is provided on the base, and one end of the screw rod facing the driving mechanism passes through the stabilizing seat and is rotatably connected to the stabilizing seat.

[0013] In a specific possible implementation manner, the stabilizing seat and the screw rod are rotatably connected via a bearing.

[0014] In a specific possible implementation mode, a plurality of mounting holes are provided on the base.

[0015] In summary, the present application has at least the following beneficial technical effects: the starting drive mechanism drives the screw to rotate, and the rotation of the screw drives the nut of the screw to move along the direction of the screw, thereby moving the workbench; when the workbench starts to move from stationary, the measuring mechanism detects that the workbench has moved and sends a signal to the upper computer, and the detection mechanism starts to detect the starting torque of the screw at this time, thereby reducing labor costs, solving the problem of uncertainty in observing the movement of the workbench and reading data by naked eye during manual measurement, reducing the possibility of large errors in the measured starting torque due to manual operating errors, and improving the accuracy of measuring the starting torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0017] Figure 2 It is a structural schematic diagram used to reflect the nut in the embodiment of the present application.

[0018] Figure numerals: 1. base; 2. screw rod; 3. nut; 4. workbench; 5. torque meter; 6. drive motor; 7. first coupling; 8. second coupling; 9. grating sensor; 10. guide rail; 11. slider; 12. anti-collision block; 13. stabilizing seat; 14. mounting hole. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-2 This application is described in further detail.

[0020] The embodiment of the present application discloses a screw torque measurement tool.

[0021] Reference Figure 1 and Figure 2 The screw torque measuring tool comprises a base 1, a screw 2 to be detected is rotatably connected to the base 1, a workbench 4 is bolted to a nut 3 of the screw 2, and a plurality of mounting holes 14 are provided on the base 1, so that the base 1 can be easily mounted on other equipment or an operating table through the mounting holes 14. A driving mechanism for driving the screw 2 to rotate is provided on the base 1, a measuring mechanism for detecting whether the workbench 4 moves is provided on the base 1, and a detection mechanism for detecting the starting torque of the screw 2 is provided between the output end of the driving mechanism and the screw 2.

[0022] Therefore, the starting drive mechanism drives the screw rod 2 to rotate, and the rotation of the screw rod 2 drives the nut 3 of the screw rod 2 to move along the direction of the screw rod 2, thereby moving the workbench 4. When the workbench 4 starts to move from stationary, the measuring mechanism detects that the workbench 4 has moved and sends a signal to the upper computer. The detection mechanism starts to detect the starting torque of the screw rod 2 at this time, thereby reducing labor costs, solving the problem of uncertainty in manual measurement by observing the movement of the workbench 4 with the naked eye and reading data, reducing the possibility of large errors in the measured starting torque due to manual operating errors, and improving the accuracy of measuring the starting torque.

[0023] Reference Figure 1 and Figure 2 The detection mechanism includes a torque meter 5 arranged on the base 1, the output end of the driving mechanism is coaxially fixedly connected with the detection axis of the torque meter 5, and the end of the detection axis of the torque meter 5 away from the driving mechanism is coaxially fixedly connected with the screw 2 to be detected. The torque meter 5 in the embodiment of the present application specifically adopts a rotary torque sensor, which has the characteristics of high sensitivity, high precision and fast response. Therefore, the driving mechanism is started, and the screw 2 rotates with the rotation of the driving mechanism during the detection process. The torque meter 5 can accurately detect the torque change of the screw 2 under the force state, and feed back the measured torque result to the host computer.

[0024] Reference Figure 1 and Figure 2The driving mechanism includes a driving motor 6 arranged on the base 1. In the embodiment of the present application, the driving motor 6 adopts a torque mode when moving. The output end of the driving motor 6 is coaxially fixedly connected with the detection shaft of the torque meter 5. The output end of the driving motor 6 is coaxially fixedly connected with the detection shaft of the torque meter 5 through a first coupling 7. The end of the detection shaft of the torque meter 5 away from the driving motor 6 is coaxially fixedly connected with the lead screw 2 to be detected through a second coupling 8. The first coupling 7 transmits the force of the driving motor 6 to the detection shaft of the torque meter 5, and then the detection shaft of the torque meter 5 transmits the force to the lead screw 2 through the second coupling 8, so as to realize the rotation of the driving lead screw 2. Through the first coupling 7 and the second coupling 8, the inter-axis offset caused by manufacturing and installation errors, working deformation or thermal expansion can be compensated to a certain extent, ensuring that the output end of the driving motor 6, the detection shaft of the torque meter 5 and the lead screw 2 are coaxially arranged, thereby improving the continuity and stability during the movement, not only improving the transmission efficiency of the system, but also reducing the additional load and vibration caused by different axes.

[0025] Therefore, the drive motor 6 is started, and the drive motor 6 gradually increases the torque, so that the detection shaft of the torque meter 5 at the output end of the drive motor 6 and the screw 2 rotate synchronously, thereby driving the nut 3 of the screw 2 to move along the direction of the screw 2 to realize the movement of the workbench 4.

[0026] Reference Figure 1 and Figure 2 The measuring mechanism includes a grating sensor 9 arranged on the base 1, and the workbench 4 is arranged at the detection end of the grating sensor 9. Therefore, when the workbench 4 starts to move from a stationary state, the grating sensor 9 detects that the workbench 4 has moved and sends a signal to the upper computer, and the torque meter 5 starts to detect the starting torque of the screw rod 2 at this time, thereby reducing the labor cost, solving the problem of uncertainty in observing the movement of the workbench 4 and reading data by naked eyes during manual measurement, and improving the accuracy of measuring the starting torque.

[0027] Reference Figure 1 and Figure 2 The base 1 is bolted with two guide rails 10 arranged in parallel with the screw rod 2, the screw rod 2 is located between the two guide rails 10, and the two guide rails 10 are respectively slidably connected with sliders 11 matching the size of the guide rails 10, and the workbench 4 is arranged on the sliders 11. Therefore, the guide rails 10 limit the moving direction of the sliders 11, reduce the possibility of position deviation of the workbench 4 during the movement process, and improve the stability of the workbench 4 during movement.

[0028] Reference Figure 1 and Figure 2The base 1 is bolted with an anti-collision block 12, which limits the position of the workbench 4. When the nut 3 moves to the end of the screw rod 2 close to the anti-collision block 12, the anti-collision block 12 contacts the workbench 4. The anti-collision block 12 plays a vibration reduction and buffering role while reducing the possibility of the workbench 4 deviating from the guide rail 10.

[0029] Reference Figure 1 and Figure 2 The base 1 is bolted with a stabilizing seat 13, and one end of the screw rod 2 facing the driving mechanism passes through the stabilizing seat 13 and is rotatably connected to the stabilizing seat 13 through a bearing. Therefore, the stabilizing seat 13 and the bearing support the screw rod 2, further improving the stability of the screw rod 2 during rotation. The bearing provides a stable support point for the screw rod 2, ensuring that the screw rod 2 can maintain the correct position and direction during rotation, reducing friction and wear between the screw rod 2 and the stabilizing seat 13, and improving the transmission efficiency and the rotation accuracy of the screw rod 2.

[0030] The implementation principle of the embodiment of the present application is as follows: start the drive motor 6, and the drive motor 6 gradually increases the torque, so that the detection shaft of the torque meter 5 at the output end of the drive motor 6 and the screw 2 rotate synchronously, and the rotation of the screw 2 drives the nut 3 of the screw 2 to move along the direction of the screw 2, thereby moving the workbench 4. When the workbench 4 starts to move from a stationary state, the grating sensor 9 detects that the workbench 4 has moved and sends a signal to the upper computer, and the torque meter 5 starts to detect the starting torque of the screw 2 at this time, reducing labor costs, solving the problem of manual measurement by observing the movement of the workbench 4 with the naked eye and the uncertainty of reading data, reducing the possibility of large errors in the measured starting torque due to manual operation errors, and improving the accuracy of measuring the starting torque.

[0031] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A screw torque measuring tool, characterized in that: The invention comprises a base (1), a screw rod (2) to be detected is rotatably connected to the base (1), a workbench (4) is arranged on a nut (3) of the screw rod (2), a driving mechanism for driving the screw rod (2) to rotate is provided on the base (1), a measuring mechanism for detecting whether the workbench (4) moves is provided on the base (1), and a detection mechanism for detecting the starting torque of the screw rod (2) is provided between the output end of the driving mechanism and the screw rod (2).

2. The screw torque measuring tool according to claim 1, characterized in that: The detection mechanism comprises a torque meter (5) arranged on a base (1); the output end of the drive mechanism is coaxially fixedly connected to a detection axis of the torque meter (5); and the end of the detection axis of the torque meter (5) facing away from the drive mechanism is coaxially fixedly connected to a screw rod (2) to be detected.

3. The screw torque measuring tool according to claim 2, characterized in that: The driving mechanism comprises a driving motor (6) arranged on a base (1), and an output end of the driving motor (6) is coaxially fixedly connected to a detection axis of a torque meter (5).

4. The screw torque measuring tool according to claim 3, characterized in that: The output end of the drive motor (6) is coaxially fixedly connected to the detection shaft of the torque meter (5) via a first coupling (7), and the end of the detection shaft of the torque meter (5) facing away from the drive motor (6) is coaxially fixedly connected to the screw rod (2) to be detected via a second coupling (8).

5. The screw torque measuring tool according to claim 1, characterized in that: The measuring mechanism comprises a grating sensor (9) arranged on a base (1), and a workbench (4) is arranged at a detection end of the grating sensor (9).

6. The screw torque measuring tool according to claim 3, characterized in that: The base (1) is provided with a guide rail (10) arranged parallel to the screw rod (2), the guide rail (10) is slidably connected with a slider (11) matching the guide rail (10), and the workbench (4) is arranged on the slider (11).

7. The screw torque measuring tool according to claim 6, characterized in that: An anti-collision block (12) is provided on the base (1); when the nut (3) moves to one end of the screw rod (2) close to the anti-collision block (12), the anti-collision block (12) contacts the workbench (4).

8. The screw torque measuring tool according to claim 1, characterized in that: A stabilizing seat (13) is provided on the base (1), and one end of the screw rod (2) facing the driving mechanism passes through the stabilizing seat (13) and is rotatably connected to the stabilizing seat (13).

9. The screw torque measuring tool according to claim 8, characterized in that: The stabilizing seat (13) and the screw rod (2) are rotatably connected via a bearing.

10. The screw torque measuring tool according to claim 1, characterized in that: The base (1) is provided with a plurality of mounting holes (14).

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