Rotor fixing tool for testing frameless torque motor
Through the combined structure of the rotating shaft, sleeve and nut, the cooperation of the elastic arm and nut is used to solve the problem of difficult disassembly of the frameless torque motor rotor, and the effect of multiple tests and no impact on sales was achieved.
Patent Information
- Application Number
- CN202421273918.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-06-05
AI Technical Summary
The rotor of the frameless torque motor is not easy to disassemble after testing, and the bonding marks are difficult to clean, which affects repeated testing and sales.
The rotor shaft, sleeve and nut structure is adopted, and the coupling of the elastic arm and nut is used to achieve clamping and disassembly of the rotor. The step structure of the sleeve and elastic arm and the top support of the nut are realized, the rotor can be removable and fixed.
The rotor is removable and fixed, and supports multiple tests without affecting the appearance and sales of the rotor.
Smart Images
Figure CN223155174U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of frameless torque motors, and particularly to a rotor fixing tooling for testing frameless torque motors. Background Art
[0002] A frameless torque motor refers to a motor that includes the rotor and stator of the motor, but does not include the housing and shaft of the motor. Users can install the rotor and stator according to the characteristics of their own products. Since the frameless torque motor has no housing and shaft, it can provide more space for other devices, and the wiring is also easier in the hollow part. It is widely used in fields such as aerospace, steering joints, and medical robots.
[0003] For the manufacturer, the frameless torque motor needs to be tested before leaving the factory to ensure that the parameters of the motor meet the design requirements. Since the frameless torque motor has no housing and shaft, during the test, the manufacturer often fixes the rotor to a shaft by bonding and fixes the stator to a housing by bonding to achieve the test.
[0004] However, after the test with this method, the rotor is not easy to be disassembled from the shaft, which is not convenient for repeated testing. Moreover, even after the rotor is disassembled, there are bonding marks on the rotor, which are not easy to clean up and affect the sale of the rotor. Based on this, this application proposes a rotor fixing tooling for testing frameless torque motors. Utility Model Content
[0005] This application provides a rotor fixing tooling for testing frameless torque motors, which can clamp the rotor. After the test is completed, the rotor can be disassembled to achieve multiple tests, and the appearance of the rotor is not affected during the test, nor is the sale of the rotor affected.
[0006] To solve the above technical problems, this application adopts the following technical solutions:
[0007] A rotor fixing tooling for frameless torque motor testing, which is used to install and fix the rotor, includes a rotating shaft, a sleeve and a nut. The rotating shaft is provided with an annular baffle, and the end of the rotating shaft away from the annular baffle is provided with an external thread. The sleeve is sleeved on the rotating shaft. The end face of the first end of the sleeve abuts against the annular baffle. The inner edge of the second end of the sleeve is provided with a plurality of elastic arms, and the plurality of elastic arms are evenly distributed along the circumferential direction of the sleeve. The thickness of the elastic arm is less than the wall thickness of the sleeve to form a step at the second end of the sleeve. The free end of the elastic arm extends in a direction away from the center of the sleeve, and the size of the root of the elastic arm is equal to the inner diameter of the rotor. The nut is screwed at the external thread, and the outer wall of the nut abuts against the inner wall of the elastic arm. When the nut moves towards the annular baffle, the nut propping against the elastic arm causes the elastic arm to prop against the inner wall of the rotor.
[0008] During use, first squeeze the free end of the elastic arm to make it contract, put the rotor to be tested on the elastic arm from the free end of the elastic arm, and the rotor abuts against the step at the second end of the sleeve under the elastic force of the elastic arm. Then sleeve the sleeve on the rotating shaft so that the first end of the sleeve abuts against the annular baffle, and then screw the nut on the external thread of the rotating shaft. As the nut moves towards the annular baffle, the nut continuously props against the elastic arm, causing the elastic arm to prop against the rotor, and clamping the rotor between the elastic arm and the step at the second end of the sleeve. After the test is completed, reverse the operation for disassembly.
[0009] Compared with the prior art, this rotor fixing tooling for frameless torque motor testing can clamp the rotor. After the test is completed, the rotor can be disassembled for multiple tests, and the appearance of the rotor is not affected during the test, nor is the sale of the rotor affected.
[0010] In an embodiment of the present application, the outer wall of the nut is inclined.
[0011] In an embodiment of the present application, the taper of the nut is equal to the taper of the elastic arm.
[0012] In an embodiment of the present application, the larger end of the nut is provided with a plurality of clamping grooves.
[0013] In an embodiment of the present application, the number of the elastic arms is 6.
[0014] In an embodiment of the present application, both ends of the rotating shaft are provided with bearing mounting shafts.
[0015] In an embodiment of the present application, the thickness of the elastic arm is one half of the wall thickness of the sleeve.
[0016] In an embodiment of the present application, the thickness of the elastic arm is 2 mm. Description of the Drawings
[0017] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0018] Figure 1 Schematic perspective view of a rotor fixing tooling for frameless torque motor testing provided by an embodiment of the present application;
[0019] Figure 2 Schematic cross-sectional view of a rotor fixing tooling for frameless torque motor testing provided by an embodiment of the present application;
[0020] Figure 3 Schematic perspective view of a rotating shaft used in a rotor fixing tooling for frameless torque motor testing provided by an embodiment of the present application;
[0021] Figure 4 Schematic perspective view of a sleeve and an elastic arm used in a rotor fixing tooling for frameless torque motor testing provided by an embodiment of the present application;
[0022] Figure 5 Schematic perspective view of a nut used in a rotor fixing tooling for frameless torque motor testing provided by an embodiment of the present application.
[0023] Reference numerals:
[0024] 010, rotor; 100, rotating shaft; 110, annular baffle; 120, bearing mounting shaft; 200, sleeve; 210, elastic arm; 300, nut; 310, clamping groove. Detailed implementation manners
[0025] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following clearly and completely describes the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts also belong to the scope of protection of the present application.
[0026] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.
[0027] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.
[0028] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0029] Figure 1 It is a schematic three-dimensional structure diagram of a rotor fixing tooling for frameless torque motor testing provided by an embodiment of the present application. Figure 2 It is a schematic cross-sectional structure diagram of a rotor fixing tooling for frameless torque motor testing provided by an embodiment of the present application. Figure 3 It is a schematic three-dimensional structure diagram of a rotating shaft used in a rotor fixing tooling for frameless torque motor testing provided by an embodiment of the present application. Figure 4 It is a schematic three-dimensional structure diagram of a sleeve and an elastic arm used in a rotor fixing tooling for frameless torque motor testing provided by an embodiment of the present application. Figure 5 It is a schematic three-dimensional structure diagram of a nut used in a rotor fixing tooling for frameless torque motor testing provided by an embodiment of the present application.
[0030] An embodiment of the present application provides a rotor fixing tooling for frameless torque motor testing, which is used to install and fix a rotor 010. As Figure 1 and Figure 2 shown, it includes a rotating shaft 100, a sleeve 200 and a nut 300. Among them, the rotating shaft 100 is a structure for installing and supporting other components, the sleeve 200 realizes the installation of the rotor 010, and the nut 300 cooperates with the elastic arm 210 on the sleeve 200 to realize the clamping of the rotor 010.
[0031] As Figure 2As shown, the rotating shaft 100 is provided with an annular baffle 110. The annular baffle 110 can be arranged near the end of the rotating shaft 100. One end of the rotating shaft 100 away from the annular baffle 110 is provided with an external thread (not shown in the figure), and the external thread has a certain length.
[0032] As Figure 2 shown, the sleeve 200 is sleeved on the rotating shaft 100. The end face of the first end of the sleeve 200 abuts against the annular baffle 110 to realize the installation and positioning of the sleeve 200.
[0033] As Figure 4 shown, a plurality of elastic arms 210 are provided at the inner edge of the second end of the sleeve 200. The plurality of elastic arms 210 are evenly distributed along the circumferential direction of the sleeve 200. There is a gap between adjacent elastic arms 210. The thickness of the elastic arms 210 is less than the wall thickness of the sleeve 200 to form a step at the second end of the sleeve 200. The step can realize limit and support. The free ends of the elastic arms 210 extend in a direction away from the center of the sleeve 200. That is to say, the elastic arms 210 extend obliquely outward and diffusely. The size of the root of the elastic arms 210 is equal to the inner diameter of the rotor 010. The inclination degree of the elastic arms 210 is not large. When the free ends of the elastic arms 210 are squeezed by hand, the elastic arms 210 can contract, and the size is smaller than the inner diameter of the rotor 010, so that the rotor 010 can be sleeved on the elastic arms 210.
[0034] As Figure 2 shown, the nut 300 is screwed on the external thread. The outer wall of the nut 300 abuts against the inner wall of the elastic arm 210. When the nut 300 moves towards the annular baffle 110, the nut 300 pushes against the elastic arm 210 so that the elastic arm 210 pushes against the inner wall of the rotor 010 to generate an obliquely outward acting force, thereby clamping the rotor 010 axially between the elastic arm 210 and the step at the second end of the sleeve 200.
[0035] During use, first squeeze the free ends of the elastic arms 210 to make them contract. Sleeve the rotor 010 to be tested onto the elastic arms 210 from the free ends of the elastic arms 210. The rotor 010 abuts against the step at the second end of the sleeve 200 under the elastic force of the elastic arms 210. Then sleeve the sleeve 200 onto the rotating shaft 100 so that the first end of the sleeve 200 abuts against the annular baffle 110. Then screw the nut 300 onto the external thread of the rotating shaft 100. As the nut 300 moves towards the annular baffle 110, the nut 300 continuously pushes against the elastic arm 210, making the elastic arm 210 push against the rotor 010 and clamping the rotor 010 between the elastic arm 210 and the step at the second end of the sleeve 200. After the test is completed, reverse the operation for disassembly.
[0036] Compared with the prior art, the rotor fixing tooling for frameless torque motor testing can clamp the rotor 010. After the test is completed, the rotor 010 can be disassembled to enable multiple tests. Moreover, the appearance of the rotor 010 is not affected during the test, and the sale of the rotor 010 is not affected.
[0037] In some embodiments, as Figure 2 and Figure 5 shown, the outer wall of the nut 300 is inclined, so that the nut 300 has a structure with one end larger and one end smaller (also known as a special-shaped nut). The nut 300 is inclined like the elastic arm 210, so that the contact area between the nut 300 and the elastic arm 210 is larger and the propping effect is better.
[0038] In some embodiments, as Figure 5 shown, a plurality of clamping grooves 310 are provided at the larger end of the nut 300. Tools such as sleeves can be clamped in the clamping grooves 310 of the nut 300 to facilitate the rotation of the nut 300 and make the operation more convenient.
[0039] In some embodiments, the slope of the elastic arm 210 is 1:40. The slope of the elastic arm 210 is small and slightly inclined, which also facilitates manually squeezing the free end of the elastic arm 210 and putting the rotor 010 on the elastic arm 210.
[0040] In some embodiments, the number of elastic arms 210 is 6, and the rotor 010 can be propped from 6 positions, so that the force on the rotor 010 is uniform and the propping effect is better.
[0041] In some embodiments, as Figure 3 shown, bearing mounting shafts 120 are provided at both ends of the rotating shaft 100. During the test, bearings are installed on the bearing mounting shafts 120 to realize the rotation of the rotating shaft 100, that is, to realize the rotation of the rotor 010.
[0042] In some embodiments, the thickness of the elastic arm 210 is one-half of the wall thickness of the sleeve 200, so that the depth of the step at the second end of the sleeve 200 is about one-half of the wall thickness of the sleeve 200, which can realize the limiting and supporting of the rotor 010. Of course, the thicknesses of the two can also be appropriately adjusted according to the actual situation and are not limited herein.
[0043] In some embodiments, the thickness of the elastic arm 210 is 2 mm, so that the elastic arm 210 has good elasticity, which is convenient for the tester to manually squeeze the elastic arm 210. After the external force on the elastic arm 210 is removed, the elastic arm 210 is also more likely to reset.
[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A rotor fixing tooling for frameless torque motor testing, used for installing and fixing a rotor, characterized in that, Comprising: A rotating shaft, the rotating shaft is provided with an annular baffle, and one end of the rotating shaft away from the annular baffle is provided with an external thread; A sleeve, the sleeve is sleeved on the rotating shaft, the end face of the first end of the sleeve abuts against the annular baffle, the inner edge of the second end of the sleeve is provided with a plurality of elastic arms, the plurality of elastic arms are evenly distributed along the circumferential direction of the sleeve, the thickness of the elastic arm is less than the wall thickness of the sleeve to form a step at the second end of the sleeve, the free end of the elastic arm extends in a direction away from the center of the sleeve, and the size of the root of the elastic arm is equal to the inner diameter of the rotor; A nut, the nut is screwed at the external thread, and the outer wall of the nut abuts against the inner wall of the elastic arm; When the nut moves towards the annular baffle, the nut propping against the elastic arm causes the elastic arm to prop against the inner wall of the rotor.
2. The rotor fixing tooling for frameless torque motor testing according to claim 1, characterized in that The outer wall of the nut is inclined.
3. The rotor fixing tooling for frameless torque motor testing according to claim 2, characterized in that, The larger end of the nut is provided with a plurality of clamping grooves.
4. The rotor fixing tooling for frameless torque motor testing according to claim 3, characterized in that The slope of the elastic arm is 1:
40.
5. The rotor fixing tooling for frameless torque motor testing according to claim 1, characterized in that, The number of the elastic arms is 6.
6. The rotor fixing tooling for frameless torque motor testing according to any one of claims 1 to 5, characterized in that Both ends of the rotating shaft are provided with bearing mounting shafts.
7. The rotor fixing tooling for frameless torque motor testing according to any one of claims 1 to 5, characterized in that The thickness of the elastic arm is one-half of the wall thickness of the sleeve.
8. The rotor fixing tooling for frameless torque motor testing according to claim 7, characterized in that, The thickness of the elastic arm is 2 mm.