Device for detecting torsional rigidity of precision speed reducer
Through the combination of the magnetic locking mechanism and the pressure loading mechanism, the problem that traditional detection devices cannot continuously load and measure different meshing states is solved, and the accurate detection of the torsional stiffness of the precision reducer is achieved.
Patent Information
- Application Number
- CN202421825230.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The torsional stiffness detection device of the traditional precision reducer cannot be continuously loaded, and the torsional stiffness in different meshing states cannot be measured, resulting in inaccurate detection results.
The input shaft of the reducer is locked by a magnetic locking mechanism, and the pressure loading mechanism is continuously loaded. The rotation angle of the loading rod is measured in combination with the laser detection system to realize torsional stiffness detection under different meshing states.
The torsional stiffness measurement of the precision reducer in different meshing states is achieved, ensuring the accuracy and continuity of the detection results.
Smart Images
Figure CN223217087U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of speed reducer detection, and in particular relates to a detection device for the torsional stiffness of a precision speed reducer. Background Art
[0002] Precision reducers offer advantages such as large transmission ratios, high positioning accuracy and repeatability, high torque density, and excellent dynamic performance. They are widely used in industrial robotic arms, humanoid robots, high-performance CNC machine tools, aerospace equipment, and other fields. As a core component of robotics, precision reducers must undergo factory testing to ensure that all performance parameters meet required standards.
[0003] Traditional precision reducer torsional stiffness testing devices use a lever-weight mechanism for loading, which is incapable of continuous loading, resulting in discontinuous testing and random errors. Furthermore, most existing precision reducer torsional stiffness testing devices employ a method where the input shaft is fixed and the output shaft is loaded. This makes it impossible to measure the torsional stiffness of the reducer under different meshing states. This results in significant drawbacks for these testing devices, preventing comprehensive results from being obtained.
[0004] In response to the above problems, the present application further designs and improves the detection device for the torsional stiffness of the precision reducer. Utility Model Content
[0005] In response to the above deficiencies in the existing technology, the utility model provides a detection device for the torsional stiffness of a precision reducer. A magnetic locking mechanism is used to lock the input shaft of the reducer, and the torsional stiffness of the reducer in different meshing states can be measured. The pressure loading mechanism is used to ensure the continuity of loading, making the measurement results more accurate.
[0006] The utility model solves the problem through the following technical solutions.
[0007] A device for detecting the torsional stiffness of a precision reducer comprises a base, wherein the base is provided with a bracket, and the bracket is provided with a second bracket for mounting the reducer; the bracket is provided with an input shaft locking mechanism extending toward the second bracket, and the input shaft locking mechanism is used to lock the input shaft of the reducer; a loading rod is provided below the second bracket, and the loading rod is used to position the output shaft of the reducer; the base is also provided with a pressure loading mechanism for driving the loading rod to rotate; the base is also provided with a laser detection system, and the laser detection system detects the rotation angle of the loading rod by a laser beam.
[0008] The detection device for the torsional stiffness of a precision reducer in this application installs the reducer to be tested on the second bracket, and adopts the method of locking the input shaft and testing the output shaft. During the testing process, the pressure loading mechanism applies pressure to the loading rod, causing the loading rod to rotate within a certain angle around its rotation point. Then the laser detection system detects the rotation angle and uses it to determine the product grade. The operation is convenient.
[0009] In a preferred embodiment, the laser detection system includes a mounting base mounted on the base, the mounting base being equipped with a laser interferometer and an interferometer mirror; the laser detection system also includes a reflector mounted on the loading rod. During the detection process, the laser interferometer emits a laser beam, which passes through the interferometer mirror and strikes the reflector. The laser beam is then reflected and detected by the laser interferometer. The rotation angle of the loading rod under a specific pressure is determined through the detection, thereby determining the quality of the reducer product and its ease of operation.
[0010] In a preferred embodiment, the interferometer is adsorbed on the mounting base via a magnetic base, and the reflector is adsorbed on the loading rod via a magnetic base, so that they can be easily installed and disassembled and their positions can be adjusted easily.
[0011] In a preferred embodiment, the pressure loading mechanism is a hydraulic mechanism, which is fixed to the base, and a hydraulic rod of the hydraulic mechanism is pressed against the loading rod to apply pressure.
[0012] In a preferred embodiment, the input shaft locking mechanism is a magnetic locking mechanism, which can conveniently clamp or release the input shaft of the reducer and is easy to operate.
[0013] Compared with the prior art, the utility model has the following beneficial effects: it provides a detection device for the torsional stiffness of a precision reducer, adopts a magnetic locking mechanism to lock the input shaft of the reducer, can measure the torsional stiffness of the reducer in different meshing states, and uses a pressure loading mechanism to ensure the continuity of loading, making the measurement results more accurate. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the detection device for the torsional stiffness of a precision reducer in the utility model.
[0015] Figure 2 This is a schematic diagram of the laser detection system in the detection device for the torsional stiffness of a precision reducer in the present invention.
[0016] Figure 3 This is a schematic diagram of the pressure loading mechanism in the detection device for the torsional stiffness of a precision reducer in the present invention. DETAILED DESCRIPTION
[0017] The present invention is described in further detail below with reference to the accompanying drawings and specific implementation methods.
[0018] In the following embodiments, the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.
[0019] In the description of the present invention, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and therefore cannot be understood as limiting the present invention. In addition, the terms: first, second, etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0020] See also Figures 1 to 3 The utility model relates to a device for detecting the torsional stiffness of a precision reducer, comprising a base 1, a bracket 2 being provided on the base 1, a second bracket 5 for mounting the reducer being provided on the bracket 2; an input shaft locking mechanism 3 extending toward the second bracket 5 is provided on the bracket 2, and the input shaft locking mechanism 3 is used to lock the input shaft 4 of the reducer; a loading rod 7 is provided below the second bracket 5, and the loading rod 7 is used to position the output shaft 6 of the reducer; a pressure loading mechanism 8 for driving the loading rod 7 to rotate is also provided on the base 1; a laser detection system 9 is also provided on the base 1, and the laser detection system 9 detects the rotation angle of the loading rod 7 by a laser beam.
[0021] Specifically, in the present application, the laser detection system 9 includes a mounting base provided on the base 1, on which a laser interferometer 91 and an interferometer mirror 92 are provided; the laser detection system 9 also includes a reflector 93 provided on the loading rod 7. During the detection process, the laser interferometer 91 emits a laser beam, which passes through the interferometer mirror 92 and hits the reflector 93. After reflection, the laser beam is detected by the laser interferometer 91. After detection, the rotation angle of the loading rod 7 under a specific pressure is obtained, thereby judging the quality of the reducer product and the ease of operation.
[0022] In the present application, the interferometer 92 is adsorbed on the mounting base via a magnetic base, and the reflector 93 is adsorbed on the loading rod 7 via a magnetic base, which allows for easy installation and removal and facilitates position adjustment. The pressure loading mechanism 8 is a hydraulic mechanism 82, which is fixed to the base 1, and the hydraulic rod 81 of the hydraulic mechanism 82 is pressed against the loading rod 7 to apply pressure.
[0023] In addition, the input shaft locking mechanism 3 in this application is a magnetic locking mechanism, which is used to lock the input shaft 4 of the reducer under test. It can easily clamp or loosen the input shaft 4 of the reducer, and is easy to operate. The magnetic locking mechanism is fixed to the bracket 2. When the engagement state of the reducer under test needs to be changed, the magnetic locking mechanism is released to operate.
[0024] like Figure 2 Figure 1 shows a schematic diagram of a laser detection system for testing the torsional stiffness of a precision reducer. The laser detection system 9 comprises a laser interferometer 91, an interferometer mirror 92, and a reflector 93. The reflector 93 is mounted on a magnetic base on the loading rod 7. The laser interferometer 91 is fixedly mounted on a mounting base, and the interferometer mirror 92 is mounted on a magnetic base on the mounting base. The loading rod 7 is fixedly connected to the output shaft 6 of the reducer under test.
[0025] like Figure 3 FIG. 1 is a schematic diagram of a pressure loading mechanism of a precision reducer torsional stiffness detection device. The pressure loading mechanism 8 includes a hydraulic rod 81 and a hydraulic mechanism 82. The hydraulic rod 81 presses against the loading rod 7 to provide torque for the loading rod 7.
[0026] The testing process of this embodiment is as follows: When testing the reducer under test, the input shaft 4 of the reducer under test is first clamped using the magnetic locking mechanism. At this point, the oil pressure in the pressure-loading mechanism 8 is slowly controlled to complete the measurement process, and the angle of rotation of the reducer under test is detected by the laser detection system. When the engagement state of the reducer under test needs to be changed, the magnetic locking mechanism is simply released. At this time, the pressure-loading mechanism 8 is in the active state, and its output pressure can drive the reducer under test to rotate. During this process, the engagement state of the reducer under test can be randomly selected, and then the magnetic locking mechanism is locked to test the torsional stiffness.
[0027] From the above description, it can be seen that the detection device for the torsional stiffness of a precision reducer in the present application installs the reducer to be tested on the second bracket 5, and adopts the method of locking the input shaft and testing the output shaft. During the testing process, the pressure loading mechanism 8 applies pressure to the loading rod 7, causing the loading rod 7 to rotate within a certain angle around its rotation point, and then the laser detection system 9 detects the rotation angle, and uses it to determine the product grade, which is easy to operate.
[0028] As described above, the utility model provides a detection device for the torsional stiffness of a precision reducer, which uses a magnetic locking mechanism to lock the input shaft of the reducer, and can measure the torsional stiffness of the reducer in different meshing states. The use of a pressure loading mechanism can ensure the continuity of loading, making the measurement result more accurate.
[0029] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention is based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field fall within the protection scope of the present invention.
Claims
1. A device for detecting torsional stiffness of a precision reducer, comprising a base (1), characterized in that: A bracket (2) is provided on the base (1), and a second bracket (5) for mounting a reducer is provided on the bracket (2); An input shaft locking mechanism (3) extending toward the second bracket (5) is provided on the bracket (2), and the input shaft locking mechanism (3) is used to lock the input shaft (4) of the reducer; A loading rod (7) is provided below the second bracket (5), and the loading rod (7) is used to position the output shaft (6) of the reducer; The base (1) is also provided with a pressure loading mechanism (8) for driving the loading rod (7) to rotate; The base (1) is also provided with a laser detection system (9), and the laser detection system (9) detects the rotation angle of the loading rod (7) through a laser beam.
2. A device for detecting torsional stiffness of a precision reducer according to claim 1, characterized in that: The laser detection system (9) comprises a mounting seat provided on the base (1), wherein a laser interferometer (91) and an interferometer mirror (92) are provided on the mounting seat; the laser detection system (9) further comprises a reflector (93) provided on the loading rod (7).
3. A device for detecting torsional stiffness of a precision reducer according to claim 2, characterized in that: The interferometer (92) is adsorbed on the mounting seat via a magnetic base, and the reflector (93) is adsorbed on the loading rod (7) via a magnetic base.
4. The device for detecting torsional stiffness of a precision reducer according to claim 1, characterized in that: The pressure loading mechanism (8) is a hydraulic mechanism (82) fixed to the base (1), and a hydraulic rod (81) of the hydraulic mechanism (82) presses against the loading rod (7) to apply pressure.
5. A device for detecting torsional stiffness of a precision reducer according to any one of claims 1 to 4, characterized in that: The input shaft locking mechanism (3) is a magnetic locking mechanism.